CA1265740A - Antimicrobially active non-woven web used in a wet wiper - Google Patents
Antimicrobially active non-woven web used in a wet wiperInfo
- Publication number
- CA1265740A CA1265740A CA000517599A CA517599A CA1265740A CA 1265740 A CA1265740 A CA 1265740A CA 000517599 A CA000517599 A CA 000517599A CA 517599 A CA517599 A CA 517599A CA 1265740 A CA1265740 A CA 1265740A
- Authority
- CA
- Canada
- Prior art keywords
- web
- fibers
- binder
- ammonium salt
- antimicrobial agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
- A47L13/16—Cloths; Pads; Sponges
- A47L13/17—Cloths; Pads; Sponges containing cleaning agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/60—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/46—Compounds containing quaternary nitrogen atoms
- D06M13/463—Compounds containing quaternary nitrogen atoms derived from monoamines
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
- D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
- D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/13—Silicon-containing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive plasters or dressings
- A61F13/0276—Apparatus or processes for manufacturing adhesive dressings or bandages
- A61F2013/0296—Apparatus or processes for manufacturing adhesive dressings or bandages for making transdermal patches (chemical processes excluded)
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/913—Material designed to be responsive to temperature, light, moisture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
- Y10T442/2525—Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
Abstract
Abstract An antimicrobially active, non-woven web, a wet wiper containing the web, and a method of making the web. The method includes the steps of forming an unbonded fibrous web; applying throughout the unbonded fibrous web an uncured binder and an antimicrobial agent, the antimicrobial active agent being substantive to the fibers of the web and to the binder; and curing the binder material to bind the fibers together to form an antimicrobially active, non-woven web. A preferred antimicrobial agent is an organo-silicon quaternary ammonium salt, especially a 3-(trimethoxylsilyl) propyldidecylmethyl ammonium chloride or a 3-(trimethoxy-silyl) propyloctadecyldimethyl ammonium chloride.
Description
~2~ a~
An Antimicrobially Active Non-Woven Web ~sed In A Wet Wiper .
The present invention relates to non-woven webs, and, more particularly, to antimicrobially active, non-woven webs, to wet wipers containing such a web, and to a method of making the web.
Wet wiper products, includiny those utilizing non woven and air-laid webs, require antimicrobial properties to destroy or inhibit the growth of various microorganisms, bacteria, yeasts, and molds. Presently, there are at least four methods of treating the fabric of 10 : the wet wiper product to obtain some type of antimicrobial protection - sterilization; pore size control, such as Bacterial Filtration Efficiency (BFE): chemical surface treatment: and overall chemical protection. All of these methods have de~onstrated inherent de~iciencies for wet wiper products.
Sterilization may be achieved by sterilizing the raw ma~erials going into the make-up of the product and/or sterilizing the final packaged product. Sterilization is : an excellent technique for killing the microorganisms :~Q present to provide a microbiologically clean product for the intended use. However, in the case of wet wipers, sterilization a~ an antimicrobial technique is limited because once the product package has been opened to dispense the wipers, the sterilization is voided and any , . . .
, . :
L2~57~1~
rem~ining wipers are exposed to and therefore subject to microbiological growth. As a result, the product is rendered both useless and potentially harmful.
Thereore, sterilization is viable only for single use packages of wet wipers. Nevertheless, due to shelf life and pacl~ge integrity concerns, all single use wet wipers packages commercially available still rely on additional chemical protection for good microbiological control.
Fabric pore size control by BFE can be used to control the passage of microorganisms from one side or surface of the fabric through the fabric to the other side or surface~ Pore size control as a method of microbiological transport control is generally used only with a dry fabric and is found most frequently in the medical industry in such products as CSR wraps and face masks. This method of microorganism transport control is ineffective for use in a wet wiper, because any microorganisms present can pass entirely around the fabric in the liquid or lotion phase of the product.
Antimicrobial surface treatment of a fabric may also be beneficial in the dry mode of usage, where, along with the pore size control by BFE, microorganisms are either filtered out and/or killed upon contact with the surface of the fabric. However, again in the case of wet wipers, surface treatment of the fabric has been shown to be insufficient to obtain the necessary microbiological control. The liquid or lotion phase o~ the wet wiper product penetrates into the interstices of the fabric to carry the microorganisms past the treated surface into the interstices of the fabric, where they may then grow and multiply.
Virtually the only method of antimicrobial control and protection presently used in wet wiper products is that which is achieved by a chemical permeation of preservative agents throughout the wet wiper product. This permeation may be achieved by padding the wiper fabric during its .. ... .
.
- , ~ .
:
. . . -..
~$~
manufacture and/or by lncorporating the chemicals in the liquid or lotion phase of the wiper product.
Padding the Eabric is generally not used as a commercial technique because of the additional manufacturing processing costs. Since a liquid or lotion must be applied to the fabric anyway in a wet wiper product, and since the liquid or lotion without antimicrobial control or preservation agents represents a key opportunity for microbiological growth, the preferred method of applying the chemical preservation or antimicrobial control is to incorporate the soluble preservative agents in the lotion phase and then apply the preserved lotion to the fabric.
In either case, the end result is the same. Since the preservatives and antimicrobial agents are soluble in a liquid or lotion phase, they ultimately equilibrate throughout the wet wiper product and provide a homogenous chemical method of antimicrobial control. Unfortunately, when a wet wiper product of this type is ultimately used, the preservatives or antimicrobial agents remain behind on the user's skin from the liquid or lotion phase and leave an irritating residue on the skin. Many individuals exhibit adverse reactions to such preservatives, and hence, their enjoyable use of the wet wiper product is significantly impeded.
Moreover, both chemical solubility and antimicrobial spectrum activity considerations significantly limit the use of other, less harsh preservative in the liquid wetting solution. Consequently, the present use of wet wiper products, such as those that use non-woven webs, has numerous inherent disadvantages.
Therefore, it would be desirahle to incorporate the antimicrobial properties required in the wet wiper product in a manner substantive to and within the wet wiper fabric.
In this manner, the issues of chemical solubility and anti-microbial activity considerations could be overcome because ' . .~ ~ ..
:
: ~
.
~2~;s7~a~
D, no harmful resldue would be left on the skin oE the user.
In addition, the increased costs of padding the wet wiper fabric during its manufacturing process could be overcome by incorporating these substantive antimicrobials into the synthetic bonding agent typically already required for such non-woven fabrics.
In sum, present non-woven web products that exhibit antimicrobial activity are less than satisfactory. Often, the webs contain preservatives that leave an irritating residue on the user's skin. Moreover, the use of various synthetic fibers and off-line treatment processes increase the cost of producing these non-woven web products.
SUMMARY OF THE INVENTION
_ Quite surprisingly, the inventor of the present inven-tion has developed an antimicrobially active, non-woven web that overcomes the significant and inherent disadvan-tages present in previous non-woven webs that attempt to exhibit antimicrobial and wet wiper properties. Unlike previous webs, the non-woven web of the present invention need not be maintained in a preservative containing solution that contains irritating chemical and leaves harmful residues on the skin of the user. Moreover, the present invention utilizes currently existing and preferred processing techniques for application of the substantive antimicrobial agent, thereby reducing the co~t of manufacture.
The present invention achieves these various advantages by providing a method for making an antimicrobially active, non~woven web. The method comprises the steps of: (a) forming an unbonded fibrous web; (b) applying throughout the unbonded fibrous web an uncured binder and an antimi-crobial agent, the antimicrobial agent being substantive to the fibers of the web and to the binder when the web is either wet or dry; and (c) curing the binder to bind the fibers together to form an antimicrobially active, non-. , ~, . ~,. . . '' ' .
.
~s~ ~
woven web. PreEerably, the antimicroblal agent ls an organo-silicon quaternary ammonium salt, such as a silyl-quaternary ammonium salt. Particularly preEerred anti-microbial agents are 3--(trimethoxysilyl) propyldidecyl-methyl ammonium salt and 3-(trimethoxysilyl) propyloctadecyldimethyl ammonium salt. Other such substantive antimicrobial agents may be recognized by those familiar with the art.
The antimicrobially active, non-woven web formed by the present invention comprises: (a) bonded fibers; (b) a binder substantially uniformly distributed on the fibers, the binder being present in an amount effective to bind the fibers; and (c) an antimicrobial agent substantially uniformly distribruted on the fibers, the antimicrobial agent being substantive to the fibers and to the binder when the web is either wet or dry.
These non-woven webs can be used to form an antimicrobially active, wet wiper that comprises: (a) an antimicrobially active, non-woven web as defined above and (b) a substantially preservative free liquid in which the web is maintained in wet condition until use.
The present invention overcomes the numerous inherent disadvantages commonly associated with previous antimicro-bially active non-woven webs and obtains the various advantages of the invention. By no longer requiring the presence of a preservative in the surrounding solution, the non-woven web product of the present invention avoids leaving an irritating residue on the user's skin.
Consequently, the present invention significantly advances over thè state of the art.
The foregoing and other features and advantages of the present invention will be made more apparent ~rom the following description of the preferred embodiments.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The method of the present invention produces an antimicrobially active, non-woven web. Initially, the present method forms an unbonded fibrous web. An uncured - 6 - ~265~
bin~er ~nd an antimicrobial agent are then appllied thro~lghout the ~nbonded Eibrous web, with the antimicro-bial agent being substantive to both the fibers of the web and to the binder when the web is either wet or dry. After application of the binder and the antimicrobial agent, the binder is cured to bind the fibers together to form an antimicrobially active, non-woven web.
In accordance with the present invention, in the first step of the method, an unbonded fibrous web is formed.
Although various cellulosic and synthetic fibers known in the art can be effectively used, the fibers are preferably cellulosic fibers and, more preferably, wood pulp fibers.
The cellulosic fibers, such as wood pulp fibers, can be chemically treated and predried prior to forming, if desired. Examples of wood pulp fibers include various mechanical and chemical pulp fibers, such as cedar fibers, Southern pine fibers, spruce fibers, and hemlock fibers.
The particular cellulosic fibers selected to make the non-woven web depend, in part, upon the type of texture, such as soft, woolly, or fluffy, and the porosity of the web that is desired. Alternatively, the fibers can be a combination of cellulosic and synthetic fibers.
The weight of the fibers, such as cellulosic fibers, used to form the unbonded fibrous web can vary depending upon the ultimate non-woven web that is produced.
Typically, the weight of the fibers forming the web will vary within the range of about 5 lbs. per ream to about 60 lbs. per ream.
Various web forming techniques known in the art can be efectively used to form the unbonded ~ibers. The web can be formed by nonwoven techniques, such as air-laying the web or wet-laying the web. One type of apparatus for air forming fibers is shown in U.S. Patent No. 4,292,271 to Buob et al. Other non woven manufacturing techniques, such as melt blown, bonding, spun bonded, needle punched, and spun laced, may also be used along with the substantive .~
: ' ~2~5~0 antimicrobial agent to provide antim:icrobially active webs. Some of the processing and cost benefits may be lost through the choice of these processes along with their concomitant raw materials limitations.
In accordance with the present invention, an uncured binder and an antimicrobial agent are applied throughout the unbonded fibrous web with the antimicrobial agent being substantive to the fibers of the web and to the binder when the web is either wet or dry. Various binders known in the art can be used. A preferred binder is a polymeric binder, such as a latex binder. Acceptable latex binders include acrylate emulsions, butadiene-styrene emulsions, ethylene vinyl acetate emulsions and acrylonitrile-butadiene emulsions. An especially effective latex binder is ethylene vinyl acetate, which is sold under the trademerk AIRFLEX A-410 by Air Products, Inc. of Allentown, Pennsylvania. The binder can also include a mixture of anionic and nonionic binders, such as ethylene vinyl acetate, which is sold under the trademark AIRFLEX
A-106 by Air Products, Inc. and ethylene acetate, sold under the trademark HA-8 by Rohm & Haas, of Philadelphia, Pennsylvania.
The amount of the binder that is to be applied to the fibers depends, in part, upon the type of fibers, such as cellulosic, and the antimicrobial agent being used in the non-woven web. Typically, the amount of the binder applied to the fibers varies within the range of about 5 %
to about 30 ~. Similarly, the amount of solids in the binder, especially a ]atex binder, depends, inter alia, on the weight of the fibers in the non-woven web. Generally, latex binders having from about 5 % to about 25 % solids are used. Of course, the skilled artisan can select the particular binder, the amount of the binder used, and the amount of solids present in the binder depending upon, in part, the type of fibers that are to be bound. The binder is applied to the fibers by various techniques known in . ., ~
, 6S'74~
the art, such as spraying, foaming, or padding.
The antimicrobial agent is selected to be substantive to both the fibers of the web and to the binder when the web is either wet or dry. As used herein, an antimicrobial agent is substantive if the antimicrobial agent attaches directly to the fibers of the web and to the binder without the need for an adhesive substance.
Substantive antimicrobial agents do not substantially diffuse from the fibers or the binder used to bind the fibers together.
Preferred antimicrobial agents are organo-silicon quaternary ammonium salts, such as sily-quaternary ammonium salt. Preferred organo-silicon quaternary ammonium salts are 3-(trimethoxysilyl) propyldidecylmethyl ammonium salts, such as 3-(trimethoxysilyl) propyldidecylmethyl ammonium chloride, and 3-(trimethoxysilyl) propyloctadecyldimethyl ammonium salts, such as 3-(trimethoxysilyl) propyloctadecyldimethyl ammonium chloride.
The antimicrobial agent is preferably applied to the fibrous web prior to or simultaneously with the application of the binder. Although various amounts of the antimicrobial agent are applied to the web depending upon, in part, the fibers selected and the particular binder used, the amount of the antim:icrobial active agent is typically in the range of about 0.25 ~ to about 3 ~ of the total web weight.
The antimicrobial agent is selected to be substantive to the binder in addition to being substantive to the fibers of the web. Hence, such an antimicrobial agent attaches directly to the binder and the cellulosic fibers without the need for an adhesive substance. Likewise, the ionic character of the binder is carefully chosen so that the antimicrobial active agent is usually substantially inert with respect to the binder to prevent ionic interaction of the antimicrobial agent and the binder.
The antimicrobial agents can be prepared by various : , :
':
., :,,~, . . .
.:.:' ' ~ `:
.. ~ . .
.: .
9 ~ 7~0 techniques known in the art. For exarnple, ~.S. Patent Nos. 4,406,892 to Eudy, 4,282,366 to Eudy, 4,394,378 to Klein, and ~,408,99~ to Baldwin describe various organo-silicon quaternary ammonium compounds, especi.ally silyl quaternary ammonium compounds, and methods of preparing these compounds. Likewise, articles in the scientific literature, such as Walters et al., Algicidal Activity of a Surface-Bonded Organosilicon Quaternary Ammonium Chloride, 25 Applied Microbiology, 253-256 (1972) and Isquith et al., Surface-Bonded Antimicrobial Activity of an Organosilicon Quaternary Ammonium Chloride, 24 Applied Microbiology, 859-863 (1972), also disclose methods of making various organosilicon quaternary ammonium compounds. Thus, the skilled artisan can readily select a method of preparing the desired organosilicon quaternary ammonium compound.
The uncured binder and the antimicrobial agent are applied to the unbonded fibers in a manner that allows the binder and the antimicrobial agent to be present throughout the unbonded fibrous web and, hence, substantially uniform-ly distributed on the fibers. Accordingly, substantially all of the unbonded fibers of the web are to be contacted with the uncured binder and tne antimicrobial agent during this application process.
Various application methods and apparatus, known in the art can be readily selected by the skilled artisan.
For example, the uncured binder and the antimicrobial agent are sprayed onto unbound fibers, such as cellulosic fibers, that have been airlaid on a foraminous support.
Similarly, the uncured binder and the antimicrobial agent can be contained in a bath through which the unbonded fibers pass. Other methods and apparatus include foaming and printing.
In accordance with the present invention, the binder material is cured to bind the fibers together to form an antimicrobial, non-woven web. Various curing techniques ': ' :
.
:`,- . :
1 o -- 12~S '~L~
known ln the art, such as infra-red radiation, electron beam, and Eorced hot air, can be ef~ectively selected and used by the skilled artisan to achieve the proper degree of binder cure.
As a result, the present invention provides an anti-microbially active, non-woven web. The non-woven web has bonded fibers; a binder substantially uniformly distributed on the fibers, the binder being present in an amount effective to bind the fibers; and an antimicrobial agent substantially uniformly distributed on the fibers, the antimicrobial agent being substantive to the fibers and to the binder when the web is either wet or dry. The amount of the antimicrobial agent present within the non-woven web is preferably in the range of about 0.25 % to about 3 % of the total web weight. The amount of the binder present within the non-woven web is preferably in the range of about 5 % to about 30 ~ of the total web weight.
When the antimicrobially active, non-woven web of the present invention is present in a substantially preservative free liquid, an antimicrobial active wet wiper is achieved. The substantially preservative free liquid, such as water, maintains the web in a wet condition until use.
Other antimicrobial agents that are substantive to the fibers and the binder may also be used. In the case of wet wipers, the governing criteria are substantivity, antimicrobial activity, and safety, such that the wet wiper is safe for use on human skin and eyes.
The following is an example of the present invention, and it is intended to be merely exemplary.
EXAMPLE
An antimicrobially active, air-laid, non-woven web was prepared in accordance with the present invention. Unbonded cellulosic fibers were air-laid to produce an unbonded cellulosic fiber web Of 40 pounds per ream~ AI~FLEX 410r which is an acetate vinyl ethylene latex binder sold by ~.
:, . ' `
. .
57~C~
Air Products, Inc. of Pennsylvania, and SIQUAT biocide were applied throughout the unbonded cellulosic fiber web as a combination of binder and antimicrobial ayent.
SIQUAT is 3-(trimethoxysilyl) propyldidecylmethyl ammonium chloride sold under the trademark SIQUAT by Sanitized, Inc. Upon application, the antimicrobial agent was substantive both to the cellulosic fibers of the web and to the binder when the web is either wet or dry. The binder was then cured to bind the cellulosic fibers together.
The resulting air-laid, non-woven web was tested to determine its antimicrobial activity. Specifically, the non-woven web was tested to determine its effect on reduction and inhibition of five United States Pharmacopeia (U.S.P.) antimicrobial preservative effectiveness challenge organisms in a 28 day challenge test. The U.S.P. XX Preservative Effectiveness Test was modified to inoculate samples of the non-woven webs in the form of wet wiper towelettes. Those skilled in the art are réadily familiar with the U.S.P. 28 day challenge test techniques and implications.
Basically, the wet wiper towelettes were subjected to an insult inoculation of five pathogenic microorganisms identified in the U.S.P. 28 day challenge test:
2S Aspergillus niger, Candida albicans, Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coliformia with total inoculation levels of 105 to 106 microorganisms/ml. The results of the 28 day challenge tests are provided in Table l.
:. :
. .
: .
' ' '`.
- ~2 - ~ 2 ~ St~
TABLE NO. 1 Day 1 Average Inoculum level/gram An 3.3 X 104/g 267/~
Ca 3.3 X 104/g ~33/g Sa 2.3 X 106/g <33/g Pa 4.7 X 105/g 33/g Ec 4.7 X 105/g <33/g An 33/g Ca Sa <33/g Pa <33/g Ec <33/y An Ca <33/g Sa Pa <33/g Ec <33/g An Ca <33/g Sa <33/g Pa <33/g Ec <33/g WEEK 4 Plated:
An Ca ~33/g Sa 33/g Pa 33/g E~ 33jg The preservative is considered efective in the product examined if: (a) the concentration of viable bacteria is reduced to not more than 0.1 % of the initial concentrations by the fourteenth day; (b) the concentrations of viable yeasts and molds remain at or below the initial concentrations during the first fourteen days and (c) the concentration of each test microorganism remains at or below these designated levels during the remainder of the 28 day test period.
All five microorganisms reduced in numbers by a factor of 104 or more. Accordingly, the antimicrobial activity .
- 13 - 1 ~GS7~0 of the towellettes was rated as being excellent.
Other embodiments of the invention will be apparent to one skilled in the art from a consideration of the specification or with the practice of the inventiorl disclosed herein. It is intended that the specification and example be considered as exemplary only with the true scope and spirit of the invention being indicated by the claims.
.~ ~ ,., .:
An Antimicrobially Active Non-Woven Web ~sed In A Wet Wiper .
The present invention relates to non-woven webs, and, more particularly, to antimicrobially active, non-woven webs, to wet wipers containing such a web, and to a method of making the web.
Wet wiper products, includiny those utilizing non woven and air-laid webs, require antimicrobial properties to destroy or inhibit the growth of various microorganisms, bacteria, yeasts, and molds. Presently, there are at least four methods of treating the fabric of 10 : the wet wiper product to obtain some type of antimicrobial protection - sterilization; pore size control, such as Bacterial Filtration Efficiency (BFE): chemical surface treatment: and overall chemical protection. All of these methods have de~onstrated inherent de~iciencies for wet wiper products.
Sterilization may be achieved by sterilizing the raw ma~erials going into the make-up of the product and/or sterilizing the final packaged product. Sterilization is : an excellent technique for killing the microorganisms :~Q present to provide a microbiologically clean product for the intended use. However, in the case of wet wipers, sterilization a~ an antimicrobial technique is limited because once the product package has been opened to dispense the wipers, the sterilization is voided and any , . . .
, . :
L2~57~1~
rem~ining wipers are exposed to and therefore subject to microbiological growth. As a result, the product is rendered both useless and potentially harmful.
Thereore, sterilization is viable only for single use packages of wet wipers. Nevertheless, due to shelf life and pacl~ge integrity concerns, all single use wet wipers packages commercially available still rely on additional chemical protection for good microbiological control.
Fabric pore size control by BFE can be used to control the passage of microorganisms from one side or surface of the fabric through the fabric to the other side or surface~ Pore size control as a method of microbiological transport control is generally used only with a dry fabric and is found most frequently in the medical industry in such products as CSR wraps and face masks. This method of microorganism transport control is ineffective for use in a wet wiper, because any microorganisms present can pass entirely around the fabric in the liquid or lotion phase of the product.
Antimicrobial surface treatment of a fabric may also be beneficial in the dry mode of usage, where, along with the pore size control by BFE, microorganisms are either filtered out and/or killed upon contact with the surface of the fabric. However, again in the case of wet wipers, surface treatment of the fabric has been shown to be insufficient to obtain the necessary microbiological control. The liquid or lotion phase o~ the wet wiper product penetrates into the interstices of the fabric to carry the microorganisms past the treated surface into the interstices of the fabric, where they may then grow and multiply.
Virtually the only method of antimicrobial control and protection presently used in wet wiper products is that which is achieved by a chemical permeation of preservative agents throughout the wet wiper product. This permeation may be achieved by padding the wiper fabric during its .. ... .
.
- , ~ .
:
. . . -..
~$~
manufacture and/or by lncorporating the chemicals in the liquid or lotion phase of the wiper product.
Padding the Eabric is generally not used as a commercial technique because of the additional manufacturing processing costs. Since a liquid or lotion must be applied to the fabric anyway in a wet wiper product, and since the liquid or lotion without antimicrobial control or preservation agents represents a key opportunity for microbiological growth, the preferred method of applying the chemical preservation or antimicrobial control is to incorporate the soluble preservative agents in the lotion phase and then apply the preserved lotion to the fabric.
In either case, the end result is the same. Since the preservatives and antimicrobial agents are soluble in a liquid or lotion phase, they ultimately equilibrate throughout the wet wiper product and provide a homogenous chemical method of antimicrobial control. Unfortunately, when a wet wiper product of this type is ultimately used, the preservatives or antimicrobial agents remain behind on the user's skin from the liquid or lotion phase and leave an irritating residue on the skin. Many individuals exhibit adverse reactions to such preservatives, and hence, their enjoyable use of the wet wiper product is significantly impeded.
Moreover, both chemical solubility and antimicrobial spectrum activity considerations significantly limit the use of other, less harsh preservative in the liquid wetting solution. Consequently, the present use of wet wiper products, such as those that use non-woven webs, has numerous inherent disadvantages.
Therefore, it would be desirahle to incorporate the antimicrobial properties required in the wet wiper product in a manner substantive to and within the wet wiper fabric.
In this manner, the issues of chemical solubility and anti-microbial activity considerations could be overcome because ' . .~ ~ ..
:
: ~
.
~2~;s7~a~
D, no harmful resldue would be left on the skin oE the user.
In addition, the increased costs of padding the wet wiper fabric during its manufacturing process could be overcome by incorporating these substantive antimicrobials into the synthetic bonding agent typically already required for such non-woven fabrics.
In sum, present non-woven web products that exhibit antimicrobial activity are less than satisfactory. Often, the webs contain preservatives that leave an irritating residue on the user's skin. Moreover, the use of various synthetic fibers and off-line treatment processes increase the cost of producing these non-woven web products.
SUMMARY OF THE INVENTION
_ Quite surprisingly, the inventor of the present inven-tion has developed an antimicrobially active, non-woven web that overcomes the significant and inherent disadvan-tages present in previous non-woven webs that attempt to exhibit antimicrobial and wet wiper properties. Unlike previous webs, the non-woven web of the present invention need not be maintained in a preservative containing solution that contains irritating chemical and leaves harmful residues on the skin of the user. Moreover, the present invention utilizes currently existing and preferred processing techniques for application of the substantive antimicrobial agent, thereby reducing the co~t of manufacture.
The present invention achieves these various advantages by providing a method for making an antimicrobially active, non~woven web. The method comprises the steps of: (a) forming an unbonded fibrous web; (b) applying throughout the unbonded fibrous web an uncured binder and an antimi-crobial agent, the antimicrobial agent being substantive to the fibers of the web and to the binder when the web is either wet or dry; and (c) curing the binder to bind the fibers together to form an antimicrobially active, non-. , ~, . ~,. . . '' ' .
.
~s~ ~
woven web. PreEerably, the antimicroblal agent ls an organo-silicon quaternary ammonium salt, such as a silyl-quaternary ammonium salt. Particularly preEerred anti-microbial agents are 3--(trimethoxysilyl) propyldidecyl-methyl ammonium salt and 3-(trimethoxysilyl) propyloctadecyldimethyl ammonium salt. Other such substantive antimicrobial agents may be recognized by those familiar with the art.
The antimicrobially active, non-woven web formed by the present invention comprises: (a) bonded fibers; (b) a binder substantially uniformly distributed on the fibers, the binder being present in an amount effective to bind the fibers; and (c) an antimicrobial agent substantially uniformly distribruted on the fibers, the antimicrobial agent being substantive to the fibers and to the binder when the web is either wet or dry.
These non-woven webs can be used to form an antimicrobially active, wet wiper that comprises: (a) an antimicrobially active, non-woven web as defined above and (b) a substantially preservative free liquid in which the web is maintained in wet condition until use.
The present invention overcomes the numerous inherent disadvantages commonly associated with previous antimicro-bially active non-woven webs and obtains the various advantages of the invention. By no longer requiring the presence of a preservative in the surrounding solution, the non-woven web product of the present invention avoids leaving an irritating residue on the user's skin.
Consequently, the present invention significantly advances over thè state of the art.
The foregoing and other features and advantages of the present invention will be made more apparent ~rom the following description of the preferred embodiments.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The method of the present invention produces an antimicrobially active, non-woven web. Initially, the present method forms an unbonded fibrous web. An uncured - 6 - ~265~
bin~er ~nd an antimicrobial agent are then appllied thro~lghout the ~nbonded Eibrous web, with the antimicro-bial agent being substantive to both the fibers of the web and to the binder when the web is either wet or dry. After application of the binder and the antimicrobial agent, the binder is cured to bind the fibers together to form an antimicrobially active, non-woven web.
In accordance with the present invention, in the first step of the method, an unbonded fibrous web is formed.
Although various cellulosic and synthetic fibers known in the art can be effectively used, the fibers are preferably cellulosic fibers and, more preferably, wood pulp fibers.
The cellulosic fibers, such as wood pulp fibers, can be chemically treated and predried prior to forming, if desired. Examples of wood pulp fibers include various mechanical and chemical pulp fibers, such as cedar fibers, Southern pine fibers, spruce fibers, and hemlock fibers.
The particular cellulosic fibers selected to make the non-woven web depend, in part, upon the type of texture, such as soft, woolly, or fluffy, and the porosity of the web that is desired. Alternatively, the fibers can be a combination of cellulosic and synthetic fibers.
The weight of the fibers, such as cellulosic fibers, used to form the unbonded fibrous web can vary depending upon the ultimate non-woven web that is produced.
Typically, the weight of the fibers forming the web will vary within the range of about 5 lbs. per ream to about 60 lbs. per ream.
Various web forming techniques known in the art can be efectively used to form the unbonded ~ibers. The web can be formed by nonwoven techniques, such as air-laying the web or wet-laying the web. One type of apparatus for air forming fibers is shown in U.S. Patent No. 4,292,271 to Buob et al. Other non woven manufacturing techniques, such as melt blown, bonding, spun bonded, needle punched, and spun laced, may also be used along with the substantive .~
: ' ~2~5~0 antimicrobial agent to provide antim:icrobially active webs. Some of the processing and cost benefits may be lost through the choice of these processes along with their concomitant raw materials limitations.
In accordance with the present invention, an uncured binder and an antimicrobial agent are applied throughout the unbonded fibrous web with the antimicrobial agent being substantive to the fibers of the web and to the binder when the web is either wet or dry. Various binders known in the art can be used. A preferred binder is a polymeric binder, such as a latex binder. Acceptable latex binders include acrylate emulsions, butadiene-styrene emulsions, ethylene vinyl acetate emulsions and acrylonitrile-butadiene emulsions. An especially effective latex binder is ethylene vinyl acetate, which is sold under the trademerk AIRFLEX A-410 by Air Products, Inc. of Allentown, Pennsylvania. The binder can also include a mixture of anionic and nonionic binders, such as ethylene vinyl acetate, which is sold under the trademark AIRFLEX
A-106 by Air Products, Inc. and ethylene acetate, sold under the trademark HA-8 by Rohm & Haas, of Philadelphia, Pennsylvania.
The amount of the binder that is to be applied to the fibers depends, in part, upon the type of fibers, such as cellulosic, and the antimicrobial agent being used in the non-woven web. Typically, the amount of the binder applied to the fibers varies within the range of about 5 %
to about 30 ~. Similarly, the amount of solids in the binder, especially a ]atex binder, depends, inter alia, on the weight of the fibers in the non-woven web. Generally, latex binders having from about 5 % to about 25 % solids are used. Of course, the skilled artisan can select the particular binder, the amount of the binder used, and the amount of solids present in the binder depending upon, in part, the type of fibers that are to be bound. The binder is applied to the fibers by various techniques known in . ., ~
, 6S'74~
the art, such as spraying, foaming, or padding.
The antimicrobial agent is selected to be substantive to both the fibers of the web and to the binder when the web is either wet or dry. As used herein, an antimicrobial agent is substantive if the antimicrobial agent attaches directly to the fibers of the web and to the binder without the need for an adhesive substance.
Substantive antimicrobial agents do not substantially diffuse from the fibers or the binder used to bind the fibers together.
Preferred antimicrobial agents are organo-silicon quaternary ammonium salts, such as sily-quaternary ammonium salt. Preferred organo-silicon quaternary ammonium salts are 3-(trimethoxysilyl) propyldidecylmethyl ammonium salts, such as 3-(trimethoxysilyl) propyldidecylmethyl ammonium chloride, and 3-(trimethoxysilyl) propyloctadecyldimethyl ammonium salts, such as 3-(trimethoxysilyl) propyloctadecyldimethyl ammonium chloride.
The antimicrobial agent is preferably applied to the fibrous web prior to or simultaneously with the application of the binder. Although various amounts of the antimicrobial agent are applied to the web depending upon, in part, the fibers selected and the particular binder used, the amount of the antim:icrobial active agent is typically in the range of about 0.25 ~ to about 3 ~ of the total web weight.
The antimicrobial agent is selected to be substantive to the binder in addition to being substantive to the fibers of the web. Hence, such an antimicrobial agent attaches directly to the binder and the cellulosic fibers without the need for an adhesive substance. Likewise, the ionic character of the binder is carefully chosen so that the antimicrobial active agent is usually substantially inert with respect to the binder to prevent ionic interaction of the antimicrobial agent and the binder.
The antimicrobial agents can be prepared by various : , :
':
., :,,~, . . .
.:.:' ' ~ `:
.. ~ . .
.: .
9 ~ 7~0 techniques known in the art. For exarnple, ~.S. Patent Nos. 4,406,892 to Eudy, 4,282,366 to Eudy, 4,394,378 to Klein, and ~,408,99~ to Baldwin describe various organo-silicon quaternary ammonium compounds, especi.ally silyl quaternary ammonium compounds, and methods of preparing these compounds. Likewise, articles in the scientific literature, such as Walters et al., Algicidal Activity of a Surface-Bonded Organosilicon Quaternary Ammonium Chloride, 25 Applied Microbiology, 253-256 (1972) and Isquith et al., Surface-Bonded Antimicrobial Activity of an Organosilicon Quaternary Ammonium Chloride, 24 Applied Microbiology, 859-863 (1972), also disclose methods of making various organosilicon quaternary ammonium compounds. Thus, the skilled artisan can readily select a method of preparing the desired organosilicon quaternary ammonium compound.
The uncured binder and the antimicrobial agent are applied to the unbonded fibers in a manner that allows the binder and the antimicrobial agent to be present throughout the unbonded fibrous web and, hence, substantially uniform-ly distributed on the fibers. Accordingly, substantially all of the unbonded fibers of the web are to be contacted with the uncured binder and tne antimicrobial agent during this application process.
Various application methods and apparatus, known in the art can be readily selected by the skilled artisan.
For example, the uncured binder and the antimicrobial agent are sprayed onto unbound fibers, such as cellulosic fibers, that have been airlaid on a foraminous support.
Similarly, the uncured binder and the antimicrobial agent can be contained in a bath through which the unbonded fibers pass. Other methods and apparatus include foaming and printing.
In accordance with the present invention, the binder material is cured to bind the fibers together to form an antimicrobial, non-woven web. Various curing techniques ': ' :
.
:`,- . :
1 o -- 12~S '~L~
known ln the art, such as infra-red radiation, electron beam, and Eorced hot air, can be ef~ectively selected and used by the skilled artisan to achieve the proper degree of binder cure.
As a result, the present invention provides an anti-microbially active, non-woven web. The non-woven web has bonded fibers; a binder substantially uniformly distributed on the fibers, the binder being present in an amount effective to bind the fibers; and an antimicrobial agent substantially uniformly distributed on the fibers, the antimicrobial agent being substantive to the fibers and to the binder when the web is either wet or dry. The amount of the antimicrobial agent present within the non-woven web is preferably in the range of about 0.25 % to about 3 % of the total web weight. The amount of the binder present within the non-woven web is preferably in the range of about 5 % to about 30 ~ of the total web weight.
When the antimicrobially active, non-woven web of the present invention is present in a substantially preservative free liquid, an antimicrobial active wet wiper is achieved. The substantially preservative free liquid, such as water, maintains the web in a wet condition until use.
Other antimicrobial agents that are substantive to the fibers and the binder may also be used. In the case of wet wipers, the governing criteria are substantivity, antimicrobial activity, and safety, such that the wet wiper is safe for use on human skin and eyes.
The following is an example of the present invention, and it is intended to be merely exemplary.
EXAMPLE
An antimicrobially active, air-laid, non-woven web was prepared in accordance with the present invention. Unbonded cellulosic fibers were air-laid to produce an unbonded cellulosic fiber web Of 40 pounds per ream~ AI~FLEX 410r which is an acetate vinyl ethylene latex binder sold by ~.
:, . ' `
. .
57~C~
Air Products, Inc. of Pennsylvania, and SIQUAT biocide were applied throughout the unbonded cellulosic fiber web as a combination of binder and antimicrobial ayent.
SIQUAT is 3-(trimethoxysilyl) propyldidecylmethyl ammonium chloride sold under the trademark SIQUAT by Sanitized, Inc. Upon application, the antimicrobial agent was substantive both to the cellulosic fibers of the web and to the binder when the web is either wet or dry. The binder was then cured to bind the cellulosic fibers together.
The resulting air-laid, non-woven web was tested to determine its antimicrobial activity. Specifically, the non-woven web was tested to determine its effect on reduction and inhibition of five United States Pharmacopeia (U.S.P.) antimicrobial preservative effectiveness challenge organisms in a 28 day challenge test. The U.S.P. XX Preservative Effectiveness Test was modified to inoculate samples of the non-woven webs in the form of wet wiper towelettes. Those skilled in the art are réadily familiar with the U.S.P. 28 day challenge test techniques and implications.
Basically, the wet wiper towelettes were subjected to an insult inoculation of five pathogenic microorganisms identified in the U.S.P. 28 day challenge test:
2S Aspergillus niger, Candida albicans, Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coliformia with total inoculation levels of 105 to 106 microorganisms/ml. The results of the 28 day challenge tests are provided in Table l.
:. :
. .
: .
' ' '`.
- ~2 - ~ 2 ~ St~
TABLE NO. 1 Day 1 Average Inoculum level/gram An 3.3 X 104/g 267/~
Ca 3.3 X 104/g ~33/g Sa 2.3 X 106/g <33/g Pa 4.7 X 105/g 33/g Ec 4.7 X 105/g <33/g An 33/g Ca Sa <33/g Pa <33/g Ec <33/y An Ca <33/g Sa Pa <33/g Ec <33/g An Ca <33/g Sa <33/g Pa <33/g Ec <33/g WEEK 4 Plated:
An Ca ~33/g Sa 33/g Pa 33/g E~ 33jg The preservative is considered efective in the product examined if: (a) the concentration of viable bacteria is reduced to not more than 0.1 % of the initial concentrations by the fourteenth day; (b) the concentrations of viable yeasts and molds remain at or below the initial concentrations during the first fourteen days and (c) the concentration of each test microorganism remains at or below these designated levels during the remainder of the 28 day test period.
All five microorganisms reduced in numbers by a factor of 104 or more. Accordingly, the antimicrobial activity .
- 13 - 1 ~GS7~0 of the towellettes was rated as being excellent.
Other embodiments of the invention will be apparent to one skilled in the art from a consideration of the specification or with the practice of the inventiorl disclosed herein. It is intended that the specification and example be considered as exemplary only with the true scope and spirit of the invention being indicated by the claims.
.~ ~ ,., .:
Claims (39)
1. A method for making an antimicrobially active, non-woven web comprising the steps of:
(a) forming an unbonded fibrous web;
(b) applying throughout the unbonded fibrous web an uncured binder and an antimicrobial agent, the antimicrobial agent being substantive to the fibers of the web and to the binder when the web is either wet or dry;
and (c) curing the binder to bind the fibers together to form an antimicrobially active, non-woven web.
(a) forming an unbonded fibrous web;
(b) applying throughout the unbonded fibrous web an uncured binder and an antimicrobial agent, the antimicrobial agent being substantive to the fibers of the web and to the binder when the web is either wet or dry;
and (c) curing the binder to bind the fibers together to form an antimicrobially active, non-woven web.
2. The method of claim 1, wherein the fibers are selected from the group consisting of cellulosic fibers, synthetic fibers, and combinations thereof.
3. The method of claim 1, wherein the antimicrobial agent is an organo-silicon quaternary ammonium salt.
4. The method of claim 3, wherein the organo-silicon quaternary ammonium salt from the group consisting of 3-(trimethoxysilyl) propyldidecylmethyl ammonium salt and 3-(trimethoxysilyl) propyloctadecyldimethyl ammonium salt.
5. The method of Claim 4, wherein the salt has a chloride anion.
6. The method of claim 1, wherein the binder is a polymeric binder.
7. The method of claim 6, wherein the polymeric binder is a latex binder.
8. The method of claim 1, wherein the amount of the antimicrobial agent applied to the web is in the range of about 0.25 % to about 3 % of the total web weight.
9. The method of claim 1, wherein the amount of the binder applied to the web is in the range of about 5 % to about 30 % of the total web weight.
10. The method of claim 1, wherein the antimicrobial agent is safe for contact with human skin and eyes.
11. The method of claim 1, wherein the unbonded fibrous web is formed by air-laying.
12. The method of claim 1, wherein the unbonded fibrous web is formed by wet-laying.
13. A method for making an antimicrobially active, air-laid non-woven web comprising the steps of:
(a) air laying an unbonded cellulosic fiber web, (b) applying throughout the unbonded cellulosic fiber web an uncured polymeric binder and an antimicrobial agent, the antimicrobial agent being an organo-silicon quaternary ammonium salt substantive to the cellulosic fibers of the web and to the polymeric binder when the web is either wet or dry; and (c) curing the binder to bind the cellulosic fibers together to form an antimicrobially active, air-laid, non-woven web.
(a) air laying an unbonded cellulosic fiber web, (b) applying throughout the unbonded cellulosic fiber web an uncured polymeric binder and an antimicrobial agent, the antimicrobial agent being an organo-silicon quaternary ammonium salt substantive to the cellulosic fibers of the web and to the polymeric binder when the web is either wet or dry; and (c) curing the binder to bind the cellulosic fibers together to form an antimicrobially active, air-laid, non-woven web.
14. The method of claim 13, wherein the organo-silicon quaternary ammonium salt is selected from the group consisting of 3-(trimethoxysilyl) propyldidecylmethyl ammonium salt and 3-(trimethoxysilyl) propyloctadecyldimethyl ammonium salt.
15. The method of claim 14, wherein the salt has a chloride anion.
16. The method of claim 13, wherein the amount of the organo-silicon quaternary ammonium salt applied to the web is in the range of about 0.25 % to about 3 % of the total web weight.
17. The method of claim 13, wherein the amount of the binder applied to the web is in the range of about 5 % to about 30 % of the total web weight.
18. The method of claim 13, wherein the antimicrobial agent is safe for contact with human skin and eyes.
19. An antimicrobially active, non-woven web comprising:
(a) bonded fibers;
(b) a binder substantially uniformly distributed on the fibers, the binder being present in an amount effective to bind the fibers; and (c) an antimicrobial agent substantially uniformly distributed on the fibers, the antimicrobial agent being substantive to the fibers and to the binder when the web is either wet or dry.
(a) bonded fibers;
(b) a binder substantially uniformly distributed on the fibers, the binder being present in an amount effective to bind the fibers; and (c) an antimicrobial agent substantially uniformly distributed on the fibers, the antimicrobial agent being substantive to the fibers and to the binder when the web is either wet or dry.
20. The web of claim 19, wherein the fibers are selected from the group consisting of cellulosic fibers, synthetic fibers, and combinations thereof.
21. The web of claim 19, wherein the binder is a polymeric binder.
22. The web of claim 21, wherein the polymeric binder is a latex binder.
23. The web of claim 19, wherein the antimicrobial agent is an organo-silicon quaternary ammonium salt.
24. The web of claim 23, wherein the organo-silicon quaternary ammonium salt is selected from the group consisting of a 3-(trimethoxysilyl) propyldidecylmethyl ammonium salt and 3-(trimethoxysilyl) propyloctadecyldi-methyl ammonium salt.
25. The web of claim 24, wherein the salt has a chloride anion.
26. The web of claim l9, wherein the amount of the antimicrobial agent is in the range of 0.25 % to about 3 %
of the total web weight.
of the total web weight.
27. The web of claim 19, wherein the amount of the binder is in the range of about 5 to about 30 % of the total web weight.
28. The web of claim 19, wherein the antimicrobial agent is safe for contact with human skin and eyes.
29. The web of claim 19, wherein the bonded fibers are air-laid.
30. The web of claim 19, wherein the bonded fibers are wet-laid.
31. An antimicrobially active wet wiper comprising:
(a) an antimicrobially active non-woven web comprising:
(i) bonded fibers;
(ii) a binder in an amount effective to bind the fibers;
(iii) an antimicrobial agent being substantive to the fibers and to the binder when the web is either wet or dry; and (b) a substantially preservative free liquid in which the web is maintained in a wet condition until use.
(a) an antimicrobially active non-woven web comprising:
(i) bonded fibers;
(ii) a binder in an amount effective to bind the fibers;
(iii) an antimicrobial agent being substantive to the fibers and to the binder when the web is either wet or dry; and (b) a substantially preservative free liquid in which the web is maintained in a wet condition until use.
32. The wet wiper of claim 31, wherein the fibers are selected from the group consisting of cellulosic fibers, synthetic fibers, and combinations thereof.
33. The wet wiper of claim 31, wherein the binder is a polymeric binder.
34. The wet wiper of claim 31, wherein the antimicro-bial agent is an organo-silicon quaternary ammonium salt.
35. The wet wiper of claim 34, wherein the organo-silicon quaternary ammonium salt is selected from the group consisting of a 3-(trimethoxysilyl) propyldidecylmethyl ammonium salt and 3-(trimethoxysilyl) propyloctadecyldimethyl ammonium salt.
36. The wet wiper of claim 35, wherein the salt has a chloride anion.
37. The wet wiper of claim 31, wherein the substantially preservative free liquid is water.
38. The wet wiper of claim 31, wherein the fibers are air-laid.
39. The wet wiper of claim 31l wherein the fibers are dry-laid.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/772,845 US4615937A (en) | 1985-09-05 | 1985-09-05 | Antimicrobially active, non-woven web used in a wet wiper |
US772,845 | 1985-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1265740A true CA1265740A (en) | 1990-02-13 |
Family
ID=25096434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000517599A Expired CA1265740A (en) | 1985-09-05 | 1986-09-05 | Antimicrobially active non-woven web used in a wet wiper |
Country Status (7)
Country | Link |
---|---|
US (2) | US4615937A (en) |
EP (1) | EP0233943B1 (en) |
JP (1) | JPS63501226A (en) |
CA (1) | CA1265740A (en) |
DE (1) | DE3685747T2 (en) |
DK (1) | DK228587A (en) |
WO (1) | WO1987001400A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6986897B1 (en) | 1999-10-04 | 2006-01-17 | Johnson & Johnson Consumer Companies, Inc. | Alcohol-free anti-bacterial wipes |
Families Citing this family (132)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4810567A (en) * | 1985-08-21 | 1989-03-07 | Uop | Antimicrobial fabrics utilizing graft copolymers |
US4615937A (en) * | 1985-09-05 | 1986-10-07 | The James River Corporation | Antimicrobially active, non-woven web used in a wet wiper |
JPS62184126A (en) * | 1986-02-04 | 1987-08-12 | 帝人株式会社 | Polyamide yarn having built-in antibacterial property applied thereto and its production |
WO1987006470A1 (en) * | 1986-04-23 | 1987-11-05 | James River Corporation | An antimicrobially active wet wiper |
US4732797A (en) * | 1987-02-27 | 1988-03-22 | James River Corporation | Wet wiper natural acid preservation system |
WO1989005093A1 (en) * | 1987-11-28 | 1989-06-15 | Fibre Treatments (Holdings) Limited | A wiping product |
US4865855A (en) * | 1988-01-11 | 1989-09-12 | Kimberly-Clark Corporation | Antimicrobial absorbent food pad |
US4891227A (en) * | 1988-02-02 | 1990-01-02 | Richardson-Vicks Inc. | Medicated cleansing pads |
US4898957A (en) * | 1988-04-18 | 1990-02-06 | Dow Corning Corporation | Organosilicon diamine antimicrobial compound |
US4847088A (en) * | 1988-04-28 | 1989-07-11 | Dow Corning Corporation | Synergistic antimicrobial composition |
US4990338A (en) * | 1988-05-09 | 1991-02-05 | Dow Corning Corporation | Antimicrobial superabsorbent compositions and methods |
US5035892A (en) * | 1988-05-09 | 1991-07-30 | Dow Corning Corporation | Antimicrobial superabsorbent compositions and methods |
US4865844A (en) * | 1988-05-20 | 1989-09-12 | Dow Corning Corporation | Method of treating tinea pedis and related dermatophytic infections |
US5141803A (en) * | 1988-06-29 | 1992-08-25 | Sterling Drug, Inc. | Nonwoven wipe impregnating composition |
US4941995A (en) * | 1988-07-05 | 1990-07-17 | Scott Paper Company | Natural preservative composition for wet wipes |
US5126138A (en) * | 1988-07-19 | 1992-06-30 | Dow Corning Corporation | Antimicrobial flourochemically treated plastic (nylon) surfaces |
US5073298A (en) * | 1988-07-20 | 1991-12-17 | Dow Corning Corporation | Antimicrobial antifoam compositions and methods |
US4921701A (en) * | 1988-08-11 | 1990-05-01 | Dow Corning Corporation | Antimicrobial water soluble substrates |
US4837079A (en) * | 1988-09-09 | 1989-06-06 | James River Corporation | Antimicrobially active, non-woven web used in a wet wiper |
US5019173A (en) * | 1988-09-29 | 1991-05-28 | Dow Corning Corporation | Cleaning method for water containing vessels and systems |
US4904524A (en) * | 1988-10-18 | 1990-02-27 | Scott Paper Company | Wet wipes |
US5091102A (en) * | 1988-11-15 | 1992-02-25 | Nordico, Inc. | Method of making a dry antimicrobial fabric |
US5094770A (en) * | 1988-11-15 | 1992-03-10 | Nordico, Inc. | Method of preparing a substantially dry cleaning wipe |
US4908355A (en) * | 1989-01-09 | 1990-03-13 | Dow Corning Corporation | Skin treatment method |
US4929498A (en) * | 1989-01-31 | 1990-05-29 | James River Corporation Of Virginia | Engineered-pulp wet wiper fabric |
US5049440A (en) * | 1989-07-28 | 1991-09-17 | The James River Corporation | Wet wiper natural acid and salt preservative composition |
US5145596A (en) * | 1989-08-07 | 1992-09-08 | Dow Corning Corporation | Antimicrobial rinse cycle additive |
US5006267A (en) * | 1989-11-08 | 1991-04-09 | The Dow Chemical Company | Biocidal fluid filters |
US5152996A (en) * | 1990-12-10 | 1992-10-06 | Eastman Kodak Company | Nonwoven wipes impregnated with an aqueous solution of a zinc acetate peroxide and a surfactant |
US5718909A (en) * | 1991-02-18 | 1998-02-17 | Medscand Ab | Sheet containing carbohydrate derivative for removal of E. coli |
SE469256B (en) * | 1991-02-18 | 1993-06-14 | Medscand Ab | RENGOERINGSPRODUKT |
WO1992015198A1 (en) * | 1991-03-01 | 1992-09-17 | Warner-Lambert Company | Oral and personal hygiene articles containing active agents bonded to the surface thereof |
US5421898A (en) * | 1992-02-21 | 1995-06-06 | Reckitt & Colman Inc. | Method and element for controlling release of a disinfectant from a substrate |
DE69426727D1 (en) * | 1993-12-23 | 2001-03-29 | Procter & Gamble | ANTIMICROBIAL COMPOSITIONS FOR WIPES |
EP1161914A1 (en) * | 1994-02-28 | 2001-12-12 | Incline Technologies, Inc. | Method for washing the skin |
US6328811B1 (en) | 1994-02-28 | 2001-12-11 | Incline Technologies, Inc. | Methods and systems for cleansing the skin |
US5538732A (en) * | 1994-04-12 | 1996-07-23 | Creative Products Resource, Inc. | Medicated applicator sheet for topical drug delivery |
US5605749A (en) * | 1994-12-22 | 1997-02-25 | Kimberly-Clark Corporation | Nonwoven pad for applying active agents |
US5662991A (en) * | 1994-12-23 | 1997-09-02 | Gentex Corporation | Laminated biocidal fabric |
US6492001B1 (en) * | 1996-08-07 | 2002-12-10 | Hi-Tex, Inc. | Treated textile fabric |
WO1996039032A1 (en) * | 1995-06-06 | 1996-12-12 | Kimberly-Clark Worldwide, Inc. | Microporous fabric containing a microbial adsorbent |
US5552020A (en) * | 1995-07-21 | 1996-09-03 | Kimberly-Clark Corporation | Tissue products containing softeners and silicone glycol |
US5730839A (en) * | 1995-07-21 | 1998-03-24 | Kimberly-Clark Worldwide, Inc. | Method of creping tissue webs containing a softener using a closed creping pocket |
ZA965679B (en) * | 1995-07-21 | 1997-01-24 | Kimberly Clark Co | Method for making soft tissue with improved bulk softness and surface softness |
CA2234205C (en) * | 1995-11-01 | 2006-08-08 | Kimberly-Clark Worldwide, Inc. | Antimicrobial compositions and wet wipes including the same |
US5700842A (en) * | 1995-11-01 | 1997-12-23 | Kimberly-Clark Worldwide, Inc. | Methods of incorporating a hydrophobic substance into an aqueous solution |
US6251210B1 (en) | 1996-08-07 | 2001-06-26 | Hi-Tex, Inc. | Treated textile fabric |
US5786282A (en) * | 1997-02-25 | 1998-07-28 | Barnhardt Manufacturing Company | Opened wet processed intermediate natural fiber product suitable for formation into end use fiber products with long-lasting antimicrobial properties and method |
GB9706714D0 (en) | 1997-04-02 | 1997-05-21 | Reckitt & Colman Inc | Improvements in or relating to organic compositions |
GB9706713D0 (en) | 1997-04-02 | 1997-05-21 | Reckitt & Colman Inc | Improvements in or relating to organic compositions |
US5954869A (en) * | 1997-05-07 | 1999-09-21 | Bioshield Technologies, Inc. | Water-stabilized organosilane compounds and methods for using the same |
US6762172B1 (en) | 1997-07-17 | 2004-07-13 | Nova Biogenetics, Inc. | Water-stabilized organosilane compounds and methods for using the same |
US6113815A (en) * | 1997-07-18 | 2000-09-05 | Bioshield Technologies, Inc. | Ether-stabilized organosilane compositions and methods for using the same |
EP0937812A2 (en) | 1998-02-20 | 1999-08-25 | Ciba SC Holding AG | Process for the treatment of nonwovens with antimicrobial agents |
US5968852A (en) * | 1998-03-17 | 1999-10-19 | Dotolo Research Corporation | Cleaner impregnated towel |
US6325969B1 (en) | 1999-04-30 | 2001-12-04 | James Aamodt | Paper product impregnated with chemical material |
BR0010740B1 (en) * | 1999-05-21 | 2012-11-27 | antimicrobial article, surgical garment, facial mask, and process for producing antimicrobial article. | |
US6762339B1 (en) | 1999-05-21 | 2004-07-13 | 3M Innovative Properties Company | Hydrophilic polypropylene fibers having antimicrobial activity |
EP1059032A1 (en) | 1999-06-08 | 2000-12-13 | The Procter & Gamble Company | Disinfecting wet wipe |
EP1059378A1 (en) * | 1999-06-08 | 2000-12-13 | The Procter & Gamble Company | Wet wipe with antifoaming agent |
US6716805B1 (en) | 1999-09-27 | 2004-04-06 | The Procter & Gamble Company | Hard surface cleaning compositions, premoistened wipes, methods of use, and articles comprising said compositions or wipes and instructions for use resulting in easier cleaning and maintenance, improved surface appearance and/or hygiene under stress conditions such as no-rinse |
US6340663B1 (en) | 1999-11-24 | 2002-01-22 | The Clorox Company | Cleaning wipes |
ATE396038T1 (en) | 1999-12-28 | 2008-06-15 | Kimberly Clark Co | ANTIMICROBIAL WIPE WITH CONTROLLED RELEASE FOR HARD SURFACES |
JP2003530489A (en) | 1999-12-28 | 2003-10-14 | キンバリー クラーク ワールドワイド インコーポレイテッド | Wipes containing controlled release antimicrobial agents |
CA2393542C (en) | 1999-12-28 | 2011-08-16 | Kimberly-Clark Worldwide, Inc. | Use-dependent indicator system for absorbent articles |
EP1167510A1 (en) | 2000-06-23 | 2002-01-02 | The Procter & Gamble Company | Flushable hard surface cleaning wet wipe |
CA2413889C (en) | 2000-06-26 | 2011-01-25 | Playtex Products, Inc. | Wipe with improved cleansing |
US6756076B2 (en) * | 2000-10-13 | 2004-06-29 | Michael Brier | Process for producing fabric articles having water-resistant and/or antimicrobial characteristics |
US6797856B1 (en) * | 2000-10-27 | 2004-09-28 | Kimberly-Clark Worldwide Inc. | Microbial management in swimwear |
US7799751B2 (en) * | 2000-12-14 | 2010-09-21 | The Clorox Company | Cleaning composition |
US20020183233A1 (en) * | 2000-12-14 | 2002-12-05 | The Clorox Company, Delaware Corporation | Bactericidal cleaning wipe |
US20030100465A1 (en) * | 2000-12-14 | 2003-05-29 | The Clorox Company, A Delaware Corporation | Cleaning composition |
US20030109411A1 (en) | 2001-08-24 | 2003-06-12 | The Clorox Company, A Delaware Corporation | Bactericidal cleaning wipe |
US20030108761A1 (en) * | 2001-09-12 | 2003-06-12 | Tammy Eddlemon | Anti-bacterial paper products |
JP5140218B2 (en) | 2001-09-14 | 2013-02-06 | 有限会社コヒーレントテクノロジー | Electrolyzer for producing charged anode water suitable for surface cleaning and surface treatment, method for producing the same, and method of use |
US6737068B2 (en) | 2001-10-01 | 2004-05-18 | Playtex Products, Inc. | Wipe formulation |
JP2005505661A (en) * | 2001-10-09 | 2005-02-24 | ザ プロクター アンド ギャンブル カンパニー | Pre-wet wipes for surface treatment |
US6712121B2 (en) | 2001-10-12 | 2004-03-30 | Kimberly-Clark Worldwide, Inc. | Antimicrobially-treated fabrics |
US20030101524A1 (en) * | 2001-11-30 | 2003-06-05 | Tew William H. | Produce handling material |
US8193104B2 (en) * | 2001-11-30 | 2012-06-05 | Celanese International Corporation | Crosslinkable cationic emulsion binders and their use as a binder for nonwovens |
US7838447B2 (en) | 2001-12-20 | 2010-11-23 | Kimberly-Clark Worldwide, Inc. | Antimicrobial pre-moistened wipers |
US20030175438A1 (en) * | 2002-01-17 | 2003-09-18 | Reeve John A. | Treatments of solid substrates to enhance durability of treatments placed thereon |
ITTV20020008A1 (en) * | 2002-01-25 | 2003-07-25 | Al Pre Tec S R L Allergy Preve | PROCEDURE FOR OBTAINING A SILK MANUFACTURE INDICATED IN THE TREATMENT OF CERTAIN SKIN AFFECTIONS OF THE HUMAN BODY |
US6969769B2 (en) * | 2002-06-14 | 2005-11-29 | Vanson Halosource, Inc. | N-halamine siloxanes for use in biocidal coatings and materials |
US20050245151A1 (en) * | 2002-06-21 | 2005-11-03 | Ahistrom Windsor Locks Llc | Nonwoven wiping material with improved quaternary salt release properties |
US7101456B2 (en) * | 2002-09-20 | 2006-09-05 | Kimberly-Clark Worldwide, Inc. | Ion triggerable, cationic polymers, a method of making same and items using same |
SE0400073D0 (en) * | 2003-04-04 | 2004-01-14 | Appear Sweden Hb | Antibacterial material |
WO2005034659A2 (en) * | 2003-08-11 | 2005-04-21 | University Of Tennessee Research Foundation | Fluorochemical electret treatment for barrier fabrics |
US20060068118A1 (en) * | 2003-08-13 | 2006-03-30 | Reeve John A | Silicon-containing treatments for solid substrates |
WO2005058814A2 (en) * | 2003-11-17 | 2005-06-30 | Auburn University | Biocidal siloxane coating material containing n-halogenated amine and amide functional groups |
US9168318B2 (en) | 2003-12-30 | 2015-10-27 | Oculus Innovative Sciences, Inc. | Oxidative reductive potential water solution and methods of using the same |
US20050139808A1 (en) | 2003-12-30 | 2005-06-30 | Oculus Innovative Sciences, Inc. | Oxidative reductive potential water solution and process for producing same |
MXPA05009960A (en) | 2003-12-30 | 2006-05-25 | Oculus Innovative Sciences Inc | Oxidative reductive potential water solution, processes for producing same and methods of using the same. |
US7851653B2 (en) * | 2005-03-22 | 2010-12-14 | Biosafe, Inc. | Method of creating a solvent-free polymeric silicon-containing quaternary ammonium antimicrobial agent having superior sustained antimicrobial properties |
BRPI0609429B8 (en) | 2005-03-23 | 2021-07-20 | Invekra S A P I De C V | use of an aqueous solution with redox potential (ORP) |
AU2006242175A1 (en) | 2005-05-02 | 2006-11-09 | Oculus Innovative Sciences, Inc. | Method of using oxidative reductive potential water solution in dental applications |
US7329705B2 (en) * | 2005-05-03 | 2008-02-12 | Celanese International Corporation | Salt-sensitive binder compositions with N-alkyl acrylamide and fibrous articles incorporating same |
US7531219B2 (en) * | 2005-07-21 | 2009-05-12 | Hi-Tex, Inc. | Treated textile fabric |
US20070048345A1 (en) * | 2005-08-31 | 2007-03-01 | Kimberly-Clark Worldwide, Inc. | Antimicrobial composition |
US20070048356A1 (en) * | 2005-08-31 | 2007-03-01 | Schorr Phillip A | Antimicrobial treatment of nonwoven materials for infection control |
US20070048344A1 (en) * | 2005-08-31 | 2007-03-01 | Ali Yahiaoui | Antimicrobial composition |
US20070048358A1 (en) * | 2005-08-31 | 2007-03-01 | Schorr Phillip A | Antimicrobial substrates |
US8138106B2 (en) | 2005-09-30 | 2012-03-20 | Rayonier Trs Holdings Inc. | Cellulosic fibers with odor control characteristics |
US8859481B2 (en) * | 2005-12-15 | 2014-10-14 | Kimberly-Clark Worldwide, Inc. | Wiper for use with disinfectants |
US20070196357A1 (en) | 2006-01-20 | 2007-08-23 | Oculus Innovative Sciences, Inc. | Methods of treating or preventing inflammation and hypersensitivity with oxidative reductive potential water solution |
JP5047674B2 (en) * | 2006-05-12 | 2012-10-10 | ユニ・チャーム株式会社 | Disposable diapers |
WO2008004243A2 (en) * | 2006-07-07 | 2008-01-10 | Ranka, Seema, Ajay | Ionic organosilicon compounds and compositions thereof |
US7553983B2 (en) | 2006-07-07 | 2009-06-30 | Zydex Industries | Organosilicon compounds |
AU2006345858B8 (en) * | 2006-07-07 | 2011-06-23 | Ranka, Seema Ajay | Methods of treating surfaces with ionic organosilicon compositions |
EP2308308B1 (en) | 2006-12-14 | 2015-08-05 | Church & Dwight Co., Inc. | Stable aqueous solutions of silane quat ammonium compounds |
US7510137B2 (en) * | 2007-05-24 | 2009-03-31 | Kimberly-Clark Worldwide, Inc. | Dispenser for sheet material |
FR2916640A1 (en) * | 2007-05-29 | 2008-12-05 | Lainiere De Picardie Bc Soc Pa | Functionalizing substrate, useful e.g. to produce anti-odor clothes, comprises preparing solution comprising active composition and fixing agent, impregnating substrate with solution, and applying ionizing radiation on impregnated substrate |
ITMI20071505A1 (en) | 2007-07-26 | 2009-01-27 | Artsana Spa | ABSORBED BOWL PROVIDED WITH AN ANTIBACTERIAL PRODUCT AND METHOD FOR ITS ACHIEVEMENT |
US20090246240A1 (en) * | 2008-03-25 | 2009-10-01 | Holmberg Ronald A | Dry bactericidal nonwoven wipe |
US20090263439A1 (en) * | 2008-04-18 | 2009-10-22 | The Procter & Gamble Company | Antimicrobial Preservative Free Wipe |
EP2411061B1 (en) | 2009-03-27 | 2014-11-19 | 3M Innovative Properties Company | Hydrophilic polypropylene melt additives |
JP6033082B2 (en) | 2009-06-15 | 2016-11-30 | オキュラス イノヴェイティヴ サイエンシズ、インコーポレイテッド | Solution containing hypochlorous acid and method of using the same |
US10182946B2 (en) * | 2009-12-24 | 2019-01-22 | Liberman Distributing And Manufacturing Co. | Advanced fabric technology and filters |
WO2012065610A1 (en) | 2010-11-18 | 2012-05-24 | Vestergaard Frandsen Sa | Method and substrate with a quat coating |
WO2012136757A1 (en) | 2011-04-08 | 2012-10-11 | Basf Se | Process for the treatment of synthetic textiles with cationic biocides |
WO2013110566A1 (en) * | 2012-01-27 | 2013-08-01 | Basf Se | Radiation-curable anti-microbial coating compound |
DE102012109242A1 (en) * | 2012-09-28 | 2014-04-03 | McAirlaid's Vliesstoffe GmbH | Material web useful as a suction pad, comprises a bonded fibrous web made of cellulose, comprising a layer of cellulose fibers which are regionally pressed with each other, and at least one quaternary ammonium compound as an additive |
USRE49528E1 (en) | 2013-04-26 | 2023-05-16 | Biointeractions Ltd. | Bioactive coatings |
CA3105562C (en) | 2013-04-26 | 2023-03-07 | Biointeractions Limited | Bioactive coatings |
JP6295821B2 (en) * | 2013-05-21 | 2018-03-20 | 王子ホールディングス株式会社 | Nonwoven sheet |
NZ715988A (en) * | 2013-07-22 | 2017-08-25 | Sca Tissue France | Web of cellulosic fibers comprising an active agent and method for manufacturing a web of cellulosic fibers comprising an active agent |
GB201410522D0 (en) * | 2014-06-12 | 2014-07-30 | Fantex Ltd | Adhesive antimicrobial composition |
WO2017125774A1 (en) | 2016-01-18 | 2017-07-27 | Roehlich Gerold | Ultrasonic cleaning and blow-drying device for spectacles and goggles |
USD984824S1 (en) | 2019-05-31 | 2023-05-02 | San Jamar, Inc. | Center pull-through dispenser |
US11224314B2 (en) | 2019-05-31 | 2022-01-18 | San Jamar, Inc. | Web material center-pull dispenser assembly |
US11930867B2 (en) | 2020-07-30 | 2024-03-19 | Fxi Inc. Limited | Coated substrates and articles with anti-viral properties, and fabrication processes |
MX2023001820A (en) | 2020-08-21 | 2023-03-13 | Clorox Co | Organic acid based antimicrobial formulations containing extremely low levels of surfactant. |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2474306A (en) * | 1945-02-23 | 1949-06-28 | Parke Davis & Co | Cellulosic products |
US2702780A (en) * | 1950-10-10 | 1955-02-22 | Phil Kalech | Measuring dispensing sheet for germicides and process of forming same |
US3138533A (en) * | 1958-05-27 | 1964-06-23 | Leo J Heim | Sanitary tissues |
US3227614A (en) * | 1960-09-29 | 1966-01-04 | Dustikin Products Inc | Germicidal paper |
US3264172A (en) * | 1965-04-24 | 1966-08-02 | Calgon Corp | Bacteriostatic paper containing a guanidine salt and method of making the same |
US3257267A (en) * | 1965-05-19 | 1966-06-21 | Harold R Hay | Retarding liberation of an additament in forming a fibrous web by embedding the additament in a gel matrix prior to addition to the fibers |
US3567118A (en) * | 1968-09-05 | 1971-03-02 | Nat Patent Dev Corp | Entrapped essences in dry composite fiber base products giving a strong fragrance when wet in water |
US3624224A (en) * | 1969-12-22 | 1971-11-30 | Schering Corp | Novel first aid products |
US3728213A (en) * | 1971-08-18 | 1973-04-17 | American Cyanamid Co | Antibiotic paper |
US3860709A (en) * | 1971-09-29 | 1975-01-14 | Dow Corning | Method of inhibiting the growth of bacteria and fungi using organosilicon amines |
US3780908A (en) * | 1972-07-28 | 1973-12-25 | Int Playtex Corp | Bulk package for individual dispensing of substantially wet sheets from stacks |
US3959556A (en) * | 1973-04-10 | 1976-05-25 | Morrison Willard L | Antimicrobial blended yarns and fabrics comprised of naturally occurring fibers |
IE47368B1 (en) * | 1977-09-27 | 1984-03-07 | Exterma Germ Prod | Impreganted substrate |
US4259103A (en) * | 1979-03-12 | 1981-03-31 | Dow Corning Corporation | Method of reducing the number of microorganisms in a media and a method of preservation |
US4406892A (en) * | 1979-11-06 | 1983-09-27 | International Paper Company | Organosilicon quaternary ammonium antimicrobial compounds |
US4282366A (en) * | 1979-11-06 | 1981-08-04 | International Paper Company | Organosilicon quaternary ammonium antimicrobial compounds |
US4343853A (en) * | 1980-03-06 | 1982-08-10 | Morrison Willard L | Antimicrobially treated fabric construction |
US4394378A (en) * | 1981-07-08 | 1983-07-19 | Klein Stewart E | 3-(Trimethoxysilyl) propyldidecylmethyl ammonium salts and method of inhibiting growth of microorganisms therewith |
DK315482A (en) * | 1981-07-20 | 1983-01-21 | Kimberly Clark Co | PROCEDURE FOR PREVENTING DISTRIBUTION OF SPIRIT WIRES AND METHOD FOR USING THE PROCEDURE |
US4395454A (en) * | 1981-10-09 | 1983-07-26 | Burlington Industries, Inc. | Absorbent microbiocidal fabric and product |
US4414268A (en) * | 1981-10-09 | 1983-11-08 | Burlington Industries, Inc. | Absorbent microbiocidal fabric and process for making same |
US4408996A (en) * | 1981-10-09 | 1983-10-11 | Burlington Industries, Inc. | Process for dyeing absorbent microbiocidal fabric and product so produced |
US4401712A (en) * | 1983-01-03 | 1983-08-30 | Tultex Corporation | Antimicrobial non-woven fabric |
US4624677A (en) * | 1984-10-03 | 1986-11-25 | Morton Thiokol, Inc. | Method for controlling antimicrobial content of fibers |
US4615937A (en) * | 1985-09-05 | 1986-10-07 | The James River Corporation | Antimicrobially active, non-woven web used in a wet wiper |
-
1985
- 1985-09-05 US US06/772,845 patent/US4615937A/en not_active Expired - Fee Related
-
1986
- 1986-07-16 US US06/886,073 patent/US4692374A/en not_active Expired - Fee Related
- 1986-09-05 EP EP19860906049 patent/EP0233943B1/en not_active Expired - Lifetime
- 1986-09-05 DE DE8686906049T patent/DE3685747T2/en not_active Expired - Fee Related
- 1986-09-05 WO PCT/US1986/001827 patent/WO1987001400A1/en active IP Right Grant
- 1986-09-05 JP JP61505317A patent/JPS63501226A/en active Pending
- 1986-09-05 CA CA000517599A patent/CA1265740A/en not_active Expired
-
1987
- 1987-05-05 DK DK228587A patent/DK228587A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6986897B1 (en) | 1999-10-04 | 2006-01-17 | Johnson & Johnson Consumer Companies, Inc. | Alcohol-free anti-bacterial wipes |
Also Published As
Publication number | Publication date |
---|---|
EP0233943A4 (en) | 1988-01-25 |
JPS63501226A (en) | 1988-05-12 |
EP0233943A1 (en) | 1987-09-02 |
US4615937B1 (en) | 1990-06-05 |
DE3685747D1 (en) | 1992-07-23 |
US4692374B1 (en) | 1990-06-19 |
EP0233943B1 (en) | 1992-06-17 |
US4692374A (en) | 1987-09-08 |
DE3685747T2 (en) | 1993-01-07 |
US4615937A (en) | 1986-10-07 |
DK228587D0 (en) | 1987-05-05 |
DK228587A (en) | 1987-05-05 |
WO1987001400A1 (en) | 1987-03-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1265740A (en) | Antimicrobially active non-woven web used in a wet wiper | |
US4837079A (en) | Antimicrobially active, non-woven web used in a wet wiper | |
US4781974A (en) | Antimicrobially active wet wiper | |
US4929498A (en) | Engineered-pulp wet wiper fabric | |
US4732797A (en) | Wet wiper natural acid preservation system | |
US4740398A (en) | Binder catalyst for an antimicrobially active, non-woven web | |
US4737405A (en) | Binder catalyst for an antimicrobially active, non-woven web | |
US4772492A (en) | Binder catalyst for an antimicrobially active, non-woven web | |
EP1299059B1 (en) | Method and manufacture of a wound dressing for covering an open wound | |
EP2371335B1 (en) | Medical dressing containing antimicrobial agent | |
US4847088A (en) | Synergistic antimicrobial composition | |
CA1274771A (en) | Antimicrobially active wet wiper | |
EP1654114B1 (en) | Silver-containing wound care device, composition therefor, and method of producing | |
US20050035327A1 (en) | Topical silver-based antimicrobial composition for wound care devices | |
US5366732A (en) | Method of milking cows | |
EP1124743A1 (en) | Belt having antimicrobial action | |
GB2074437A (en) | Treatment of plant matter | |
KR100614662B1 (en) | Functional wall-paper having glossy property and preparing thereof | |
JPH06245658A (en) | Irrigation for plant raising | |
CA2138667A1 (en) | Method of milking cows | |
JPH05192040A (en) | Antibacterial and antifungal water supply mat | |
WO2000014284A9 (en) | Antimicrobial footwear and process of manufacture |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKLA | Lapsed |