|Número de publicación||US3344789 A|
|Tipo de publicación||Concesión|
|Fecha de publicación||3 Oct 1967|
|Fecha de presentación||29 Dic 1964|
|Fecha de prioridad||29 Dic 1964|
|Número de publicación||US 3344789 A, US 3344789A, US-A-3344789, US3344789 A, US3344789A|
|Inventores||Zinner Norman Robert, Jr Otis L Updike, Arnold Edwin Warren|
|Cesionario original||Azur Associates|
|Exportar cita||BiBTeX, EndNote, RefMan|
|Citas de patentes (11), Citada por (101), Clasificaciones (39)|
|Enlaces externos: USPTO, Cesión de USPTO, Espacenet|
Oct. 3, w RNO D ET AL DIAPER WITH FILM ENCLOSED ABSORBENT Filed Dec. 29, 1964 tmLJLlwli H d w n liJminrfi |',1||1| M a y sw m f C Z m 0 k mm w wmwmw .n E N w United States Patent DIAPER WITH FILlVl EN CLOSED ABSORBENT Edwin Warren Arnold, Suffer-n, N.Y., Otis L. Updike, Jr.,
Charlottesville, Va., and Norman Robert Zinner, Brooklyn, N .Y., assignors to Azur Associates, New York,
N.Y., a partnership Filed Dec. 29, 1964, Ser. No. 421,779 6 Claims. (Cl. 128-287) ABSTRACT OF THE DISCLOSURE A diaper or like article including fibrous means for distributing liquid by capillary action to solid sorptive means for retaining liquid even when pressure is applied thereto and film means enclosing the fibrous means and sorptive means and affording a body fluid ingress. Illustrative are glass fibre Wick means and hydrous calcium silicate sorbent.
This invention relates to an article for sorbing liquid which maintains the liquid in an immobile condition, which article may be used for diapers, catamenial purposes, urinary conduit drainage receptacles, etc.
The diaper problem has been attacked by the development of disposable diapers. These paper diapers have the other drawbacks of the cloth diapers. They become soggy masses immediately after urination, and the urine is allowed to break down into ammonia. Diaper rash ensues as a result of ammonia having been in contact with the sensitive skin of the baby. Continued contact of urine and inflamed skin can promote secondary bacterial infection since urine is an excellent culture medium and promotes bacterial :growth. At the least, the wet diaper is uncomfortable and malodorous and the infant howls for a change. Plastic pants help the bedclothes but not the infant. In fact, by their retentive abilities, plastic pants enhance the maceration of the infant skin. A diaper that would retain the urine during the entire night in such a state that there is minimal moisture at the diaper-skin juncture would minimize discomfort and the likelihood of diaper rash with its attendant complications. Naturally this would be beneficial to the infantand the parents.
Catamenial articles, such as sanitary napkins and tampons, have somewhat the same defects as do diapers in that they can become soggy and malodorous. Pressure on a saturated napkin by body movement can tend to squeeze out the liquid with the unpleasant result of leakage'to the fastidious woman, a disaster. Tampons in particular have limited capacity for menstrual blood.
A most difiicult existence is the burden of the person who has undergone a urinary diversionary procedure and must thereafter dispose of his urine by way of a stoma, which is inconveniently located and difiicult to manage. Today the urine passes out of the stoma to a 'pouch either directly, e.g., see- US. Patent No. 3,055,368, or indirectly through a pliable tube. These pouches slosh as the person moves; it is difi'icult to make a leakproof contact with the stoma. Many forms of athletic activity are difiicult if not impossible'to this category of medical patients. At night the sufferer is chained to the bed by the fact that the pouch must be maintained in a dependent position with relation to the kidneys. This means the drainage receptacle must be attached either to the bed frame or placed upon the floor adjacent the bed. The return of urine to the body by way of the stoma must be avoided to prevent secondary kidney damage from back pressure and urostasis. Tossing and turning in their sleep is also limited in these persons.
In any position the wearer must be careful not to bump the pouch because of breakage or the possibility of liquid re-entering the stoma. Eiforts have been made to overcome these difficulties by using sorptive materials to receive the liquid. These are either bulky, heavy, of small capacity, or tend to release the liquid when pressure is applied to them, as by weight of the body leaning against a surface, in the manner a Wet sponge exudes Water when squeezed.
An object of the invention is an article which can receive liquid and thereafter retain said liquid in an immobile condition.
Another object of the invention is a receptacle for the surgically diverted urinary tract which receives and distributes liquid to a large area of solid sorptive material which immobilizes the liquid, and which permits relatively complete freedom of action to the wearer.
A further object of the invention is a diaper which has over-night capacity and permits the infant to be relatively dry over that time.
Yet another object of the invention is a catamenial article which has large capacity and also does not release liquid in response to body pressure thereon.
Still another object of the invention is a dressing which can be applied to a draining wound, which dressing does not need frequent replacement.
Yet a further object of the invention is a pad which can be inserted in a nursing mothers bra to collect leakage and eliminate the soiling of clothing.
Another object of the invention is an innersole with qualities of dessication which will thereby maintain a dry foot.
Still a further object of the invention is an industrial wipe which does not change shape or lose its solid character after sorbing liquid.
An additional object of the invention is directed to a surgical mask.
Another additional object of the invention is directed to dressings suitable for Weeping dermatological conditions and any serous exudate.
Other objects of the invention will be evident after reading the detailed description thereof.
FIGURE 1 is a side View of a receptacle for receiving urine from a cutaneous urinary stoma, looking at the side which would contact the skin of the wearer, with a partial cut-away.
FIGURE 2 is a cross-section of the receptacle of FIG. 1, taken at plane 2-2, on an enlarged scale.
FIGURE 3 is a cross-section of the receptacle of FIG. 1, taken at plane 33, positioned at a stoma, on an enlarged scale.
FIGURE 4 is a plan view of a diaper embodiment of the invention (the fabric layer is not shown).
FIGURE 5 is a cross-sectional view of FIG. 4, at plane 55, with the fabric layer shown.
In summary the article of the invention comprises: fibrous means for distributing liquid, by capillary action, to solid sorptive means for receiving liquid from said fibrous means, said sorptive means being characterized by the ability to retain the solid state and to retain sorbed liquid when pressure is applied to said sorptive means, and liquid impermeable film means enclosing said fibrous means and said sorptive means, said film means being provided with a liquid ingress to said fibrous means.
FIGURES 4 and 5 illustrate a diaper embodiment of the invention. Fibrous means 10 distribute liquid, as urine, by capillary action to sorption units 12 and 14. Each sorption unit 12 and 14 is a packet of sold sorptive means 16 and 18 enclosed by a liquid permeable material 2i and 22, such as paper, soluble plastic film, nonwoven fabric, etc.
The fibrous means 10 and sorption units 12 and 14 are enclosed by a liquid impermeable film means 26. Herein film means 26 is made up from two sheets 28 and 30 which are sealed at the edge 32. Upper film sheet 30 is provided with liquid ingress for entry of body liquid into contact with fibrous means 10. Herein the ingress consists of a multiplicity of holes 34 in sheet 30 positioned where urinary flow will be passed into the interior of the diaper into the reservoir region occupied by fibrous means only and then distributed to the sorption units for immobilization.
For comfort of the infant, sheet 30 is covered by a fabric layer 36-shown onlyin FIG. 5. Fabric 36 covers at least that portion of the film means 26 which otherwise might contact the skin of the infant. Here the entire upper sheet 30 is covered by fabric 36. Fabric 36 may be made conveniently of diaper cloth or diaper paper. In any case the fabric should be of a nature permitting rapid passage 'of liquid to holes 34.
12 and 14 form an elongated, pliable means suitable for the intended use in connection with a human body, herein a diaper for an infant.
No fastening means are shown in the figures. Many obvious methods will immediately come to mind. A preferred method uses strips of adhesive tape or snaps to secure the diaper to itself.
The film forming sheets 28 and 30 must be impermeable to liquid. It is to be understood that impermeability here includes film which will withstand the action of body liquid, such as urine, for the intended period of use of the article. For example, in a diaper it is intended that the diaper will be worn for a period of 8-12 hours, and the film will be able to retain its impermeability and pliability for that time, plus a substantial safety factor. It is self-evident that many film-forming materials are available of both synthetic and natural origin. Illustrative of synthetic film-forming materials are polyethylene, polypropylene, polyvinyl acetate synthetic rubber etc.. Illustrative natural materials are rubber and gutta percha. A preferred material is polyethylene.
Fibrous means 10 may be any material capable of distributing liquid by capillary action; self evidently this material must also be capable of resisting the chemical action of the liquid being distributed for at least the intended time of use of the article. The fibrous means may also be described as a material [functioning as a wick. Material made of cellulosic fibres, whether natural or chemically modified, may be used as wicking materials. It has been found that glass fibres in the proper arrangement are a superior wicking material. In general, the invention utilizes these in the form of a mat of closely associated glass fibres. However, it is possible to form wicks by the use of long filaments placed in parallel close association. The use .of glass fibres as wicks is described in detail in US. Patent No. 2,477,403; this description is incorporated by reference herein.
A preferred glass fibre is Refrasil, sold by H. I. Thompson Company. Refrasil glass fibres are made from high silica glass; the fibres have been acid leached to provide a porous surface, which is slightly acidic. No lubricant is present on these fibres. It has been observed that these fibres are particularly suitable for handling urinary liquid and also liquids containing disolved substances; these substances appear to become adhered to the surface of the fibres.
The diaper embodiment of the figures utilize packets of liquid-permeable material enclosing the solid sorptive means. The liquid-permeable material is preferably paper. It is not necessary that the liquid permeable means retain its strength after having been wetted since most powdered sorptive material tend to remain in place after having sorbed liquid. In some situations the liquid permeable material may be a Water soluble film such as polyvinyl alcohol.
The solid sorptive means is characterized by the ability to retain the solid state and to retain sorbed liquid when pressure is applied to the sorptive means. The term solid includes true solids, gels and gums which will imbibe water and remain firm. The ability to retain the solid state after sorbing liquid means that to the eye the appearance of the solid sorptive means is relatively unchanged. It must be appreciated that this term is to be taken in the relative sense and Will not apply when the amount of liquid exceeds the capacity of the sorptive means.
In order to attain the object of the invention it is essential that the sorptive means retain the sorbed liquid when pressure is applied to the sorptive means. In other words,
to sorptive means must immobilize the liquid. A wet sponge does not immobilize the water because pressure on the wet sponge will release the water. The pressure which is to be resisted obviously will be determined by the intendeduse of the article. In general, the pressure will amount to that which will be applied by normal body movements or by accidental bumping of the article, while being worn, against a solid surface.
The solid sorptive means may be a granular or powdered solid material, such as activated charcoal, which includes bone char, silica gel, activated alumina; fullers earth; and diatomaceous earth; carboxymethylcellulose; guar derivatives; natural and synthetic gums; bentonite (a gel-former), etc.
An especially preferred solid sorptive material is the ynthetic material sold by Johns-Manville as Micro-Cell E. This is a finely divided powder produced by hydrothermal reaction of diatomaceous silica and lime; it is described as a synthetic hydrous calicum silicate. Micro- Cel B will sorb 34 times its weight of liquid and remain a dry free-flowing powder. As little as 2-3 lbs. will convert one gallon of liquid to a dry free-flowing powder.
The solid sorptive means may also be porous organic solids, or organic fibres. Cellulose acetate tow such as is used in cigarette filters is an exceptionally good sorbent for the purposes of the invention. These organic sorptive materials are self-supporting and can be fashioned as units for use in the article which do not require a packet-formmg wrapper.
It is apparent that the diaper article of FIGS. 4 and 5 can be readily modified for use as a sanitary napkin. It is common in the case of these items to provide deodorant and also medicinal materials. The high sorptive capacity of both the fibrous means and the sorptive means enables the addition of the necessary amounts of these other materials with benefits to the mental peace of the wearer.
FIGS. 1-3 show one embodiment of a receptacle for urine from an ileostomy stoma. As can be seen in FIG. I this receptacle comprises an elongated band-like member which is pliable enough to be wrapped around or partially around a human body. For purposes of visualization, FIG. 1 represents a receptacle about 30 inches long and 5 inches wide, and about /2 inch thick. This receptacle has an adult urine capacity of about one-half day and needs changing about twice a day. FIGS. 2 and 3 have been drawn to approximately a double vertical scale over that of FIG. 1 for clarity. The thickness of the receptacle Packets 74 etc. of solid sorptive vmaterial are distrib-.
uted throughout the interior of member 54 in close contact with the wicks 6064a. In the figures only one packet has been numbered to avoid confusion. It is self-evident that the size of the packets will be determined by the dimensions of the band-like member 54, the number of wicks, the type of solid sorptive material, and especially the type of machinery which produces the receptacle.
Herein packet 74 are elongated units made up of the hereinbefore defined calcium silicate, and a wrapper of paper.
In the FIGURES 1-3 the wicks and sorption units are enclosed by two sheets of polyethylene; an outer sheet 78 and a body sheet 80, heat-sealed at the edges 82 to form a liquid impermeable container.
Body sheet 80 is provided with liquid ingress 86 for entry of liquid from stoma 56. Opening 86 is in this embodiment reinforced with a square of polyethylene 88 (FIG. 1). It can be seen from the figures that the receptacle is designed to be worn next to the skin with the liquid ingress adapted to be positioned immediately adjacent to a stoma. Means may be provided about opening 86 to more tightly seal the skin area about the stoma and avoid seepage along the skin during more strenuous athletic or work activities of the wearer. An especially ef fective arrangement is that involving pressure sensitive adhesive as shown in US. Patent No. 3,055,368.
No fastening means are shown as numerous methods of fastening the member 54 about the body may be devised. A simple snap button arrangement with a number of snaps in an elastic strip will permit fitting the receptacle to the bodies of wearers of different waist measurements.
It is evidenced from inspection that the receptacle of the FIGS. 1-3 is inconspicuous when worn, completely eliminates the liquid sloshing problem, and because the liquid is immobilized, the receptacle may be worn regardless of the posture of the wearer or the vigor of the movements of the wearer. It is considered that the wearer could go swimming with the receptacle of the invention, an unlikelihood with any of the presently known devices for this use.
It is to be understood that many modifications of the diaper and ileostomy receptacle shown in the figures may be devised, and the invention is not limited to these em bodiments which are illustrative only.
It is evident that the article of the invention does in deed accomplish, either in the embodiments described or in embodiments readily devised from the description, each and every object enumerated herein.
Thus having described the invention, what is claimed is:
.1. A receptacle for urine from a urocutaneous stoma which receptacle comprises:
(a) a plurality of elongated glass fibre wicks for distributing liquid, by capillary action, received from a stoma,
(b) to a plurality of sorption units consisting essentially of liquid permeable packets of synthetic hydrous calcium silicate which has the ability to maintain the solid state after sorbing liquid and to retain sorbed liquid when pressure is applied to the sorptive means, and
(c) liquid-impermeable film means enclosing said Wicks and said sorption units to form a pliable bandlike member, said film being provided with a liquid ingress for urine from a stoma, said ingress being adapted to be positioned immediately adjacent to a stoma.
2. An article adapted for use as a diaper or for a similar purpose which article comprises:
(a) fibrous means for distributing liquid by capillary action,
(b) to solid sorptive means for receiving, and retaining liquid, from said fibrous means, said sorptive means having the ability to maintain the solid state after sorbing liquid and to retain sorbed liquid when pressure is applied to the sorptive means, and
(c) liquid impermeable fihn means enclosing said fibrous means and said sorptive means to form an elongated, pliable member suitable for the intended use in connection with a human body, said film means being provided with a liquid ingress for the entry of body fluid.
3. A diaper which comprises:
(a) glass fibre wick means for distributing liquid, by
capillary action, received from a human body,
(b) to a plurality of sorption units consisting essentially of solid sorptive means having the ability to maintain the solid state after sorbing liquid and to retain sorbed liquid when pressure is applied to the sorptive means,
(0) liquid impermeable film means enclosing said wick means and said sorption units to form elongated pliable member suitable for use as a diaper, said film means :being provided with a liquid ingress body liquid, and
(d) fabric means covering at least that portion of said film which otherwise may contact the skin of the user of the diaper.
4. The diaper of claim 3 where said film is polyethylcne.
5. The diaper of claim 3 where said solid sorptive means consist of synthetic hydrous calcium silicate.
6. The diaper of claim 5 where said sorption units consist essentially of liquid permeable packets of said calcium silicate.
References Cited UNITED STATES PATENTS 2,331,271 10/1943 Gilchrist 128290 2,477,403 7/ 1949 Brady 128156 2,542,909 2/1951 De Wet 128-290 2,690,415 9/1954 Shuler 128-290 2,896,618 7/ 1959 Schaefer 128-296 2,934,068 4/1960 Graham et al. 178-285 3,121,427 2/ 1964 Mosier 128-290 3,124,135 3/1964 Olson 178290 3,149,023 9/1964 Bodendorf et al 178-290 3,221,738 12/1965 Ekberg et al 128-287 FOREIGN PATENTS 410,702 5/1934 Great Britain.
RICHARD A. GAUDET, Primary Examiner. C. F. ROSENBAUM, Assistant Examiner.
|Patente citada||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US2331271 *||9 Jul 1938||5 Oct 1943||John E Gilchrist||Catamenial bandage|
|US2477403 *||24 Nov 1944||26 Jul 1949||Owens Corning Fiberglass Corp||Surgical bandage|
|US2542909 *||23 Ago 1949||20 Feb 1951||Int Cellucotton Products||Sanitary napkin|
|US2690415 *||2 Feb 1951||28 Sep 1954||Frederick A Shuler||Flexible sheetlike odor-adsorbent bodies and method of producing same|
|US2896618 *||21 Ene 1958||28 Jul 1959||Johnson & Johnson||Corrugated dressing|
|US2934068 *||21 Jun 1956||26 Abr 1960||Personal Products Corp||Tow tampon|
|US3121427 *||13 Jun 1960||18 Feb 1964||Jack M Mosier||Catamenial appliance and composition|
|US3124135 *||30 Jun 1960||10 Mar 1964||Cellulosic products|
|US3149023 *||19 Jul 1961||15 Sep 1964||C H Dexter & Sons Inc||Carbon-filled sheet and method for its manufacture|
|US3221738 *||1 Abr 1963||7 Dic 1965||Green Tord David||Method for manufacturing diapers and the like, and a diaper manufactured in accordance with this method|
|GB410702A *||Título no disponible|
|Patente citante||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US3498296 *||3 Oct 1966||3 Mar 1970||Marion C Gallagher||Diaper panty and the like|
|US3604422 *||16 Oct 1968||14 Sep 1971||Reinhardt N Sabee||Diaper with soft edges and nonleaking side seal|
|US3613687 *||13 Jun 1969||19 Oct 1971||Kendall & Co||Quick-drying, absorbent nether garment|
|US3658065 *||14 Jul 1969||25 Abr 1972||Weck & Co Inc Edward||Bandage having an integral reservoir|
|US3661154 *||26 May 1969||9 May 1972||Torr David||Water-absorbing material|
|US3670731 *||20 May 1966||20 Jun 1972||Johnson & Johnson||Absorbent product containing a hydrocolloidal composition|
|US3678933 *||17 Jul 1970||25 Jul 1972||Moore Perk Corp||Surgical sponge or bandage|
|US3783872 *||23 Jun 1969||8 Ene 1974||Union Carbide Corp||Disposable absorbent pads containing insoluble hydrogels|
|US3805790 *||12 May 1972||23 Abr 1974||Kimberly Clark Co||Preshaped feminine napkin|
|US3814101 *||4 Dic 1972||4 Jun 1974||Union Carbide Corp||Disposable absorbent articles|
|US3888248 *||23 Jul 1973||10 Jun 1975||Moore Perk Corp||Abdominal pad or surgical dressing|
|US3888256 *||13 Feb 1973||10 Jun 1975||Hans Studinger||Layered absorbant pad material|
|US3927673 *||12 Ago 1974||23 Dic 1975||Colgate Palmolive Co||Quilted diaper|
|US3945386 *||8 Ago 1972||23 Mar 1976||Domtar Limited||Disposable diaper|
|US3967623 *||30 Jun 1975||6 Jul 1976||Johnson & Johnson||Disposable absorbent pad|
|US3994299 *||24 Feb 1975||30 Nov 1976||Colgate-Palmolive Company||Absorbent article|
|US4014341 *||2 Ago 1976||29 Mar 1977||Colgate-Palmolive Company||Absorbent article and method|
|US4036233 *||2 Jul 1976||19 Jul 1977||Union Carbide Corporation||Flexible waist diaper|
|US4055180 *||23 Abr 1976||25 Oct 1977||Colgate-Palmolive Company||Absorbent article with retained hydrocolloid material|
|US4212302 *||22 Dic 1977||15 Jul 1980||Colgate-Palmolive Company||Absorbent article with spaced hydrocolloid material|
|US4237591 *||5 Feb 1979||9 Dic 1980||Personal Products Company||Deodorant mini-pad sanitary napkin|
|US4285342 *||4 Jun 1979||25 Ago 1981||Johnson & Johnson Baby Products Company||Disposable diaper|
|US4314558 *||28 Abr 1980||9 Feb 1982||Permacel||Surgical drainage bags|
|US4352356 *||10 Nov 1980||5 Oct 1982||Humanicare International Inc.||Urinary incontinence garment|
|US4372309 *||10 Nov 1980||8 Feb 1983||Humanicare International Inc.||Moisture absorbent pad|
|US4413996 *||14 Jul 1981||8 Nov 1983||Taylor Kevin D||Diaper with liquid retaining chamber|
|US4490147 *||19 Jul 1982||25 Dic 1984||Pierce Larry L||Absorbent sanitary napkin|
|US4540454 *||10 Sep 1984||10 Sep 1985||Personal Products Company||Method of forming a superthin absorbent product|
|US4589877 *||27 Jun 1985||20 May 1986||E. R. Squibb & Sons, Inc.||Male incontinence device|
|US4592751 *||29 Jun 1984||3 Jun 1986||E. R. Squibb & Sons, Inc.||Incontinence pad|
|US4610678 *||6 Sep 1983||9 Sep 1986||Weisman Paul T||High-density absorbent structures|
|US4643726 *||29 Jun 1984||17 Feb 1987||E. R. Squibb & Sons, Inc.||Incontinence insert|
|US4666439 *||14 Jun 1985||19 May 1987||Smith & Nephew Associated Companies Limited||Hygienic absorbent pads|
|US4670011 *||22 Abr 1985||2 Jun 1987||Personal Products Company||Disposable diaper with folded absorbent batt|
|US4690681 *||23 Ene 1986||1 Sep 1987||Kimberly-Clark Corporation||Disposable leakproof catamenial device|
|US4748977 *||17 Dic 1985||7 Jun 1988||Isover Saint-Gobain||Mineral fiber-based absorbent material|
|US4790838 *||16 Sep 1987||13 Dic 1988||Beghin-Say Sa||Device forming a sanitary or similar napkin including lateral wings or flaps sealed together improving lateral tightness, preferably provided with pleats|
|US4960477 *||24 Ene 1989||2 Oct 1990||Mcneil-Ppc, Inc.||Disposable diaper with folded absorbent batt|
|US5009650 *||6 Ago 1987||23 Abr 1991||Kimberly-Clark Corporation||Absorbent structure designed for absorbing body fluids|
|US5171238 *||16 Mar 1989||15 Dic 1992||The Transzonic Companies||Absorbent pad with fibrous facing sheet|
|US5176668 *||19 Sep 1989||5 Ene 1993||Kimberly-Clark Corporation||Absorbent structure designed for absorbing body fluids|
|US5188625 *||17 Ago 1990||23 Feb 1993||Kimberly-Clark Corporation||Sanitary napkin having a cover formed from a nonwoven web|
|US5300192 *||17 Ago 1992||5 Abr 1994||Weyerhaeuser Company||Wet laid fiber sheet manufacturing with reactivatable binders for binding particles to fibers|
|US5308896 *||17 Ago 1992||3 May 1994||Weyerhaeuser Company||Particle binders for high bulk fibers|
|US5352480 *||17 Ago 1992||4 Oct 1994||Weyerhaeuser Company||Method for binding particles to fibers using reactivatable binders|
|US5401267 *||21 Jun 1994||28 Mar 1995||Kimberly-Clark Corporation||Absorbent article having enhanced wicking capacity|
|US5437653 *||12 May 1993||1 Ago 1995||Kimberly-Clark Corporation||Absorbent article having two coapertured layers and a method of making the article|
|US5447977 *||15 Nov 1993||5 Sep 1995||Weyerhaeuser Company||Particle binders for high bulk fibers|
|US5454800 *||12 May 1993||3 Oct 1995||Kimberly-Clark Corporation||Absorbent article|
|US5474545 *||7 Dic 1992||12 Dic 1995||Chikazawa; Osamu||Diaper and/or sanitary napkin|
|US5538783 *||17 Ago 1992||23 Jul 1996||Hansen; Michael R.||Non-polymeric organic binders for binding particles to fibers|
|US5543215 *||17 Ago 1992||6 Ago 1996||Weyerhaeuser Company||Polymeric binders for binding particles to fibers|
|US5547541 *||16 Feb 1994||20 Ago 1996||Weyerhaeuser Company||Method for densifying fibers using a densifying agent|
|US5547745 *||17 Ago 1993||20 Ago 1996||Weyerhaeuser Company||Particle binders|
|US5571618 *||17 Jun 1994||5 Nov 1996||Weyerhaeuser Company||Reactivatable binders for binding particles to fibers|
|US5589256 *||17 Ago 1992||31 Dic 1996||Weyerhaeuser Company||Particle binders that enhance fiber densification|
|US5607759 *||17 Ago 1993||4 Mar 1997||Weyerhaeuser Company||Particle binding to fibers|
|US5609727 *||7 Feb 1994||11 Mar 1997||Weyerhaeuser Company||Fibrous product for binding particles|
|US5611885 *||7 Jun 1995||18 Mar 1997||Weyerhaeuser Company||Particle binders|
|US5614570 *||4 Abr 1995||25 Mar 1997||Weyerhaeuser Company||Absorbent articles containing binder carrying high bulk fibers|
|US5641561 *||17 Ago 1993||24 Jun 1997||Weyerhaeuser Company||Particle binding to fibers|
|US5672418 *||17 Ago 1993||30 Sep 1997||Weyerhaeuser Company||Particle binders|
|US5693411 *||17 Ago 1993||2 Dic 1997||Weyerhaeuser Company||Binders for binding water soluble particles to fibers|
|US5789326 *||19 Nov 1996||4 Ago 1998||Weyerhaeuser Company||Particle binders|
|US5807364 *||4 Abr 1995||15 Sep 1998||Weyerhaeuser Company||Binder treated fibrous webs and products|
|US5810798 *||15 Ene 1997||22 Sep 1998||Kimberly-Clark Worldwide, Inc.||Absorbent article having a thin, efficient absorbent core|
|US5866173 *||18 Nov 1996||2 Feb 1999||The Procter & Gamble Company||Apparatus for producing absorbent products|
|US5925026 *||10 Mar 1997||20 Jul 1999||Kimberly-Clark Worldwide, Inc.||Apertured absorbent pads for use in absorbent articles|
|US5986167 *||24 Mar 1998||16 Nov 1999||Kimberly-Clark Worldwide, Inc.||Method of distributing liquid in apertured absorbent pads|
|US5998032 *||5 Jul 1996||7 Dic 1999||Weyerhaeuser Company||Method and compositions for enhancing blood absorbence by superabsorbent materials|
|US6048489 *||29 Ene 1999||11 Abr 2000||The Procter & Gamble Company||Absorbent products, and apparatus and method for producing the same|
|US6071549 *||6 Ago 1998||6 Jun 2000||Weyerhaeuser Company||Binder treated fibrous webs and products|
|US6186990 *||23 Ene 1998||13 Feb 2001||Reachgood Industrial Company||To a human bodily fluid collection device and method of collecting and absorbing the same|
|US6206865||1 Oct 1996||27 Mar 2001||Kimberly-Clark Worldwide, Inc.||Absorbent article having a cellulosic transfer layer|
|US6270893||7 Mar 1994||7 Ago 2001||Weyerhaeuser Company||Coated fiber product with adhered super absorbent particles|
|US6340411||7 Oct 1998||22 Ene 2002||Weyerhaeuser Company||Fibrous product containing densifying agent|
|US6391453 *||4 Mar 1998||21 May 2002||Weyernaeuser Company||Binder treated particles|
|US6395395||6 Dic 1999||28 May 2002||Weyerhaeuser Company||Method and compositions for enhancing blood absorbence by superabsorbent materials|
|US6423884||11 Oct 1996||23 Jul 2002||Kimberly-Clark Worldwide, Inc.||Absorbent article having apertures for fecal material|
|US6425979||3 May 2001||30 Jul 2002||Weyerhaeuser Company||Method for making superabsorbent containing diapers|
|US6455114||13 Oct 1999||24 Sep 2002||Isaac Goldhirsch||Composite absorbent structure and method|
|US6461553||31 Ene 1997||8 Oct 2002||Weyerhaeuser||Method of binding binder treated particles to fibers|
|US6521087||4 May 2001||18 Feb 2003||Weyerhaeuser Company||Method for forming a diaper|
|US6521339||18 May 2000||18 Feb 2003||Weyerhaeuser Company||Diol treated particles combined with fibers|
|US6596103||1 Nov 2000||22 Jul 2003||Weyerhaeuser Company||Method of binding binder treated particles to fibers|
|US6613028||22 Dic 1998||2 Sep 2003||Kimberly-Clark Worldwide, Inc.||Transfer delay for increased access fluff capacity|
|US6627249||18 Mar 2002||30 Sep 2003||Weyerhaeuser Company||Method of enhancing blood absorbence by superabsorbent material|
|US7005558 *||25 Abr 1997||28 Feb 2006||Sca Hygiene Products Ab||Apertured covering sheet for an absorbent article and a method of producing the covering sheet|
|US7018490||7 May 2003||28 Mar 2006||Weyerhaeuser Company||Method of binding binder treated particles to fibers|
|US7144474||15 Ago 2000||5 Dic 2006||Weyerhaeuser Co.||Method of binding particles to binder treated fibers|
|US8192416||19 Jun 2009||5 Jun 2012||Uni-Charm Corporation||Interlabial pad|
|US20050010183 *||24 Jun 2003||13 Ene 2005||Weyerhaeuser Company||Absorbent structure for absorbing blood|
|US20070250033 *||26 Jun 2007||25 Oct 2007||Georgina Holm||Self-adhering and reusable surgical dressing|
|US20080312616 *||15 Jun 2007||18 Dic 2008||Theresa Nixon||Absorbent under-breast pad|
|US20090259207 *||19 Jun 2009||15 Oct 2009||Uni-Charm Corporation||Interlabial pad|
|US20150230551 *||16 Sep 2014||20 Ago 2015||Catherine Maureen O'Brien||Shoe liners and method for making the same|
|USRE32957 *||2 May 1985||20 Jun 1989||Johnson & Johnson||Absorbent article|
|DE9105470U1 *||3 May 1991||11 Jul 1991||Schlorke, Thorsten, 6900 Heidelberg, De||Título no disponible|
|EP0012295A1 *||1 Dic 1979||25 Jun 1980||Henkel Kommanditgesellschaft auf Aktien||Sanitary towel|
|EP0139484A1 *||21 Sep 1984||2 May 1985||Personal Products Company||Disposable sanitary napkin product in a flexible shell|
|EP0140470A1 *||28 Jun 1984||8 May 1985||Personal Products Company||Disposable urinary pad|
|Clasificación de EE.UU.||604/368, 604/378, 604/370, 604/375, D24/126, 604/376|
|Clasificación internacional||A61F13/20, A43B17/10, A61L15/18, A61F5/44, A61F13/15, B01J20/28|
|Clasificación cooperativa||A61F13/537, A61L15/18, A61F2013/51186, A61F2013/51355, A61F13/512, A61F2013/53721, A61F2013/530992, A61F2013/530481, A61F13/8405, B01J20/2805, B01J20/28033, A61F2013/15048, B01J20/28023, A61F13/531, A61F5/4401, A61F2013/51409, A61F13/202, A61F13/511, A43B17/105|
|Clasificación europea||B01J20/28D36, B01J20/28D8, B01J20/28D24, A61F13/531, A61F13/512, A61F5/44B, A43B17/10A1, A61L15/18|