CA1157204A - Sanitary napkin with two layers of absorbent - Google Patents
Sanitary napkin with two layers of absorbentInfo
- Publication number
- CA1157204A CA1157204A CA000391165A CA391165A CA1157204A CA 1157204 A CA1157204 A CA 1157204A CA 000391165 A CA000391165 A CA 000391165A CA 391165 A CA391165 A CA 391165A CA 1157204 A CA1157204 A CA 1157204A
- Authority
- CA
- Canada
- Prior art keywords
- absorbent
- layer
- napkin
- fluid
- grams
- 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
-
- 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
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
-
- 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
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
-
- 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
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
-
- 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
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
- A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
-
- 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
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F2013/53445—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad from several sheets
-
- 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
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53708—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
- A61F2013/53721—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction with capillary means
Abstract
ABSTRACT OF THE DISCLOSURE
The sanitary napkin is provided with a fluid permeable cover and a fluid impermeable baffle as well as a double layered absorbent batt. The absorbent material is characterized by different densities in its different layers with the layer closest the body of the wearer having a density between 0.4 to 1.0 grams/cc and the other layer having a density greater than the first layer.
It is preferred that the second layer contain compressed densified areas for fluid direction purposes.
The sanitary napkin is provided with a fluid permeable cover and a fluid impermeable baffle as well as a double layered absorbent batt. The absorbent material is characterized by different densities in its different layers with the layer closest the body of the wearer having a density between 0.4 to 1.0 grams/cc and the other layer having a density greater than the first layer.
It is preferred that the second layer contain compressed densified areas for fluid direction purposes.
Description
J ~ 5720~
FIELD OF INVENTION
This invention relates to a sanitary napkin and particularly a sanitary napkin having improved absorbency capability.
BACKGRO~D OF TH_ INVENTION
A sanitary napkin is generally composed of an absorbent layer, a fluid impervious baffle and an outer wrap which overlies both the absorbent layer and the baffle and is fluid pervious. Fluid enters the absorbent layer through the fluid pervious cover material. It is desirable that the menstrual fluid be removed from the surface o the absorbent layer, primarily for two reasons.
First, if the 1uid is spread out on the top of the absorbent layer facing the body and the underside of the cover material, surface pressure applied ~o the cover material by the wearer may provide strikeback, i.e. fluid flow back through the surface of the cover material. The more highly saturated the absorbent material is, the more likely the strikeback phenomenon is to occur. T~e second reason is one of aesthetics. When the wearer sees the spreading of a stained portion along the top of the absorbent layer, it is visually displeasing as well as giving the usually false impres~ion that the absorbent capacity of the napkin is fully utilized.
The desire to convey fluid rapidly away from the surface of the absorbent layer closest to the body of the wearer, however, can further limit the useful absorbent capacity of the napkin because by rapidly
FIELD OF INVENTION
This invention relates to a sanitary napkin and particularly a sanitary napkin having improved absorbency capability.
BACKGRO~D OF TH_ INVENTION
A sanitary napkin is generally composed of an absorbent layer, a fluid impervious baffle and an outer wrap which overlies both the absorbent layer and the baffle and is fluid pervious. Fluid enters the absorbent layer through the fluid pervious cover material. It is desirable that the menstrual fluid be removed from the surface o the absorbent layer, primarily for two reasons.
First, if the 1uid is spread out on the top of the absorbent layer facing the body and the underside of the cover material, surface pressure applied ~o the cover material by the wearer may provide strikeback, i.e. fluid flow back through the surface of the cover material. The more highly saturated the absorbent material is, the more likely the strikeback phenomenon is to occur. T~e second reason is one of aesthetics. When the wearer sees the spreading of a stained portion along the top of the absorbent layer, it is visually displeasing as well as giving the usually false impres~ion that the absorbent capacity of the napkin is fully utilized.
The desire to convey fluid rapidly away from the surface of the absorbent layer closest to the body of the wearer, however, can further limit the useful absorbent capacity of the napkin because by rapidly
- 2 -~g ~ :l 5 7 ~ 0 4 conveying the fluid through a central area, the side area of the napkin is not fully utilized. Several attempts have been made to either convey fluid away from the top sur~ace of absorbe~t or else to utilize fluid directing means of varying densities in an attempt to provide preferential absorbency in different areas of sanitary napkins. An example of one such approach is disclosed in U.S. Patent 3,545,441 in which a single layer of absorbent having a density gradient with denser portions concentrated toward the center of the absorbent mass is provided. Another somewhat more complex con~
fi~uration is U.SO Patent 3~494,362 in which layers of conventional absorbent material are separated by fibers of the same absorbent which have been densified, i.e. by embossing, and positioned at right angles to these layers.
U.S. Patent 1,910,872 discloses a sanitary napkin having three separate layer~ with a densified component located between two traditionally fluffy cellulosic absorbent batts. U.S. Patent 4,057,061 discloses a sanitary napkin having its entire absorbent core volume reduced by com-pression is the absorbent component in its entirety. Other sanitary napkins which disclose compression and multi-layer construction are U.S. Patents 2,952,259 and 4,103,062 and British Patent 1,563,697.
While the prior art recognizes that densified absorbent material can be utilized for fluid direction and, in some instances, increase f luid absorbency, the con-7~0~
s~r~lction of these devices is co~plicated and cu~nbersome.In addition, the problem of stain control rela-tive to absorbent top layer wetting in conjunction with efficient absorben-t use has no-t been completely satisfactorily addressed.
The sanitary napkin of this invention provides a two layer absorbent with excellent stain control and maximum absorbent capacity utilization. Such a napkin can be provided utilizing conventional manufacturiny teehniques, ' According to this invention, a sanitary napkin is provided with a fluid permeable cover and an absorbent component having two absorbent layers both of conventional cellulosic material in batt form. The uppermost layer, i.e. that proximal to the wearer's body, has a density of 0/03 grams/cc to 0.15 grams/cc. The second absorb,ent batt which is beneath the first absorbent batt has a density greater than the first.
In a specific embodiment of the invention, the second absorbent batt is one which has compressed areas preferably located longitudinally along the surface of the batt and occupying from 5 to 25% of the surface area.
The combination of the relatively open pore structure represented by the upper absorbent layer and the comparatively dense bottom layer provides for rapid fluid transport through the top layer in a localized area and preferential absorption along the bottommost absorbent layer. By adding compressed zones longitudinally along the top surface of the bottom absorbent layer, the menstraul exudate passing rapidly through the topmost absorbent '~'' pc/~,i . .
~ ~57~fl portion will be conveyed rapidly directionally along ~he surface of the bottom layer o absorbent utilizing essen-tially uniformly the majority of the bottom absorbent layer. Compression of the bottom surface of the absorbent batt can be obtained by a variety of means including embossing and when compression is complete, 5 to 25% of the surface of the bottom layer should be compressed. Density in the compressed layer is preferably between 0.40 and 1.0 grams/cc.
For purposes of maximum absorbent efficiency, the com-pressed areas should be sinuous as well as longitudinallyoriented.
For maximum protection and efficiency for the napkin of this invention, it is preferred that the fluid impermeable baffle be brought up along the side of the napkin and actually overlie a portion of the top cover material. This is to allow for maximum longitudinal fluid distribution without side straining or side leakage. Due to the construction described above, the bottom layer of absorbent is utilized first and, after saturation, the bottom of the top layer of absorbent material starts per-forming an absorbent function. As a result of the rapid fluid passage initially through the absorbent, however, until the pad is almost completely utilized, there is no top staining along the upper surface of the top absorbent layer except in a very small area directly beneath the portion of initial fluid penetration. In this way the absorbent material of both layers is more completely utilized.
~ ~L57~
DESCRIPTIOPI OF THE DRAWINGS
~ _ .
This invention can be more easily understood by reference ~o the accompanying figure which is a plan view partialing cross section of the sanitar~ napkin of this invention.
According to FIG. 1, a sanitary napkin is pro-vided with an overwrap 13 completely encircling the other components of the napkin. This napkin is sealed by means of fusing the cover to itself at the top and bottom portions, }0 e.g. by ultrasonic means as represented by band 11 inset from the longitudinal extxemeties of the napkin. A top absorbent layer 15 having sinuous compression lines is indicated in this figure by embossment lines 12. The baffle 14 is located underneath the bottom of the absorbent layers and extends upward along the sides of the absorbent layers as well as covering a portion of the absorbent layers at the top of the body facing first absorbent batt. Attach-ment means (not shown) are provided for attaching the sanitary napkin to the undergarment of the user. These means are well-known in the art and are generally a single or a plurality of adhesive strips pro~ided on the bottom, i.e. panty facing side of the sanitary napkin.
- This invention provides a simple combination for maximum utilization of absorbent material. As a result of the effectiveness of this combination, it is possible to produce a napkin of substantially reduced thickness having absorbent capabilities equal to a napkin of con-1 ~7~
ventional thickness. In a particularly preferred embodi-ment of thls invention, a napkin having an absorbent layer thickness of 1/2" to 1/4" is provided. This napkin will perform in a manner substantially equal to a conventional thick sanitary napkin havin~ no compressed or embossed areas.
fi~uration is U.SO Patent 3~494,362 in which layers of conventional absorbent material are separated by fibers of the same absorbent which have been densified, i.e. by embossing, and positioned at right angles to these layers.
U.S. Patent 1,910,872 discloses a sanitary napkin having three separate layer~ with a densified component located between two traditionally fluffy cellulosic absorbent batts. U.S. Patent 4,057,061 discloses a sanitary napkin having its entire absorbent core volume reduced by com-pression is the absorbent component in its entirety. Other sanitary napkins which disclose compression and multi-layer construction are U.S. Patents 2,952,259 and 4,103,062 and British Patent 1,563,697.
While the prior art recognizes that densified absorbent material can be utilized for fluid direction and, in some instances, increase f luid absorbency, the con-7~0~
s~r~lction of these devices is co~plicated and cu~nbersome.In addition, the problem of stain control rela-tive to absorbent top layer wetting in conjunction with efficient absorben-t use has no-t been completely satisfactorily addressed.
The sanitary napkin of this invention provides a two layer absorbent with excellent stain control and maximum absorbent capacity utilization. Such a napkin can be provided utilizing conventional manufacturiny teehniques, ' According to this invention, a sanitary napkin is provided with a fluid permeable cover and an absorbent component having two absorbent layers both of conventional cellulosic material in batt form. The uppermost layer, i.e. that proximal to the wearer's body, has a density of 0/03 grams/cc to 0.15 grams/cc. The second absorb,ent batt which is beneath the first absorbent batt has a density greater than the first.
In a specific embodiment of the invention, the second absorbent batt is one which has compressed areas preferably located longitudinally along the surface of the batt and occupying from 5 to 25% of the surface area.
The combination of the relatively open pore structure represented by the upper absorbent layer and the comparatively dense bottom layer provides for rapid fluid transport through the top layer in a localized area and preferential absorption along the bottommost absorbent layer. By adding compressed zones longitudinally along the top surface of the bottom absorbent layer, the menstraul exudate passing rapidly through the topmost absorbent '~'' pc/~,i . .
~ ~57~fl portion will be conveyed rapidly directionally along ~he surface of the bottom layer o absorbent utilizing essen-tially uniformly the majority of the bottom absorbent layer. Compression of the bottom surface of the absorbent batt can be obtained by a variety of means including embossing and when compression is complete, 5 to 25% of the surface of the bottom layer should be compressed. Density in the compressed layer is preferably between 0.40 and 1.0 grams/cc.
For purposes of maximum absorbent efficiency, the com-pressed areas should be sinuous as well as longitudinallyoriented.
For maximum protection and efficiency for the napkin of this invention, it is preferred that the fluid impermeable baffle be brought up along the side of the napkin and actually overlie a portion of the top cover material. This is to allow for maximum longitudinal fluid distribution without side straining or side leakage. Due to the construction described above, the bottom layer of absorbent is utilized first and, after saturation, the bottom of the top layer of absorbent material starts per-forming an absorbent function. As a result of the rapid fluid passage initially through the absorbent, however, until the pad is almost completely utilized, there is no top staining along the upper surface of the top absorbent layer except in a very small area directly beneath the portion of initial fluid penetration. In this way the absorbent material of both layers is more completely utilized.
~ ~L57~
DESCRIPTIOPI OF THE DRAWINGS
~ _ .
This invention can be more easily understood by reference ~o the accompanying figure which is a plan view partialing cross section of the sanitar~ napkin of this invention.
According to FIG. 1, a sanitary napkin is pro-vided with an overwrap 13 completely encircling the other components of the napkin. This napkin is sealed by means of fusing the cover to itself at the top and bottom portions, }0 e.g. by ultrasonic means as represented by band 11 inset from the longitudinal extxemeties of the napkin. A top absorbent layer 15 having sinuous compression lines is indicated in this figure by embossment lines 12. The baffle 14 is located underneath the bottom of the absorbent layers and extends upward along the sides of the absorbent layers as well as covering a portion of the absorbent layers at the top of the body facing first absorbent batt. Attach-ment means (not shown) are provided for attaching the sanitary napkin to the undergarment of the user. These means are well-known in the art and are generally a single or a plurality of adhesive strips pro~ided on the bottom, i.e. panty facing side of the sanitary napkin.
- This invention provides a simple combination for maximum utilization of absorbent material. As a result of the effectiveness of this combination, it is possible to produce a napkin of substantially reduced thickness having absorbent capabilities equal to a napkin of con-1 ~7~
ventional thickness. In a particularly preferred embodi-ment of thls invention, a napkin having an absorbent layer thickness of 1/2" to 1/4" is provided. This napkin will perform in a manner substantially equal to a conventional thick sanitary napkin havin~ no compressed or embossed areas.
Claims (6)
1. A sanitary napkin including a fluid permeable cover, a fluid impermeable baffle and an absorbent component, said absorbent component comprising a first absorbent batt proximate to the wearer having a density of 0.03 grams/cc to 0.15 grams/cc and a second absorbent batt distal from the wearer having a density greater than the first absorbent batt.
2. The napkin according to Claim 1 wherein the second layer is compressed over about 5 to 25% of the surface.
3. The napkin according to Claim 2 wherein the density in the compressed area is From 0.40 grams/cc to 1.0 grams/cc.
4. The napkin according to Claim 2 wherein compression is primarily longitudinal.
5. The napkin according to Claim 2 wherein the compression is by embossing.
6. The napkin according to Claim 5 wherein the bottom layer has a sinuous embossment pattern extending along the longitudinal surface of the napkin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21182380A | 1980-12-01 | 1980-12-01 | |
| US211,823 | 1980-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1157204A true CA1157204A (en) | 1983-11-22 |
Family
ID=22788498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000391165A Expired CA1157204A (en) | 1980-12-01 | 1981-11-30 | Sanitary napkin with two layers of absorbent |
Country Status (10)
| Country | Link |
|---|---|
| KR (1) | KR830007061A (en) |
| AU (1) | AU7764881A (en) |
| BR (1) | BR8107793A (en) |
| CA (1) | CA1157204A (en) |
| FR (1) | FR2494989A1 (en) |
| GB (1) | GB2089214A (en) |
| IT (1) | IT1172116B (en) |
| MX (1) | MX153899A (en) |
| NL (1) | NL8105333A (en) |
| ZA (1) | ZA818029B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5466232A (en) * | 1988-09-12 | 1995-11-14 | Johnson & Johnson Inc. | Unitized sanitary napkin |
| US5797894A (en) * | 1988-09-12 | 1998-08-25 | Johnson & Johnson, Inc. | Unitized sanitary napkin |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4461621A (en) * | 1981-10-19 | 1984-07-24 | Colgate-Palmolive Company | Disposable diaper with polymer coating |
| JPS60215804A (en) * | 1984-04-04 | 1985-10-29 | 花王株式会社 | Absorbable article |
| CA1260202A (en) * | 1984-04-13 | 1989-09-26 | Leo J. Bernardin | Absorbent structure designed for absorbing body fluids |
| US5176668A (en) | 1984-04-13 | 1993-01-05 | Kimberly-Clark Corporation | Absorbent structure designed for absorbing body fluids |
| GB8422143D0 (en) * | 1984-09-01 | 1984-10-03 | Smith & Nephew Ass | Absorbent products |
| DE3772073D1 (en) * | 1986-03-20 | 1991-09-19 | Shiseido Co Ltd | ABSORBING PRODUCT. |
| GB8613905D0 (en) * | 1986-06-07 | 1986-07-09 | Smith & Nephew Ass | Sanitary towels |
| US4798603A (en) * | 1987-10-16 | 1989-01-17 | Kimberly-Clark Corporation | Absorbent article having a hydrophobic transport layer |
| CA2014203C (en) | 1989-05-08 | 2000-03-21 | Margaret Gwyn Latimer | Absorbent structure having improved fluid surge management and product incorporating same |
| US4994037A (en) | 1990-07-09 | 1991-02-19 | Kimberly-Clark Corporation | Absorbent structure designed for absorbing body fluids |
| US5037409A (en) | 1990-07-12 | 1991-08-06 | Kimberly-Clark Corporation | Absorbent article having a hydrophilic flow-modulating layer |
| US5591149A (en) | 1992-10-07 | 1997-01-07 | The Procter & Gamble Company | Absorbent article having meltblown components |
| ZA92308B (en) | 1991-09-11 | 1992-10-28 | Kimberly Clark Co | Thin absorbent article having rapid uptake of liquid |
| US5681300A (en) | 1991-12-17 | 1997-10-28 | The Procter & Gamble Company | Absorbent article having blended absorbent core |
| NZ250889A (en) * | 1993-02-22 | 1996-05-28 | Mcneil Ppc Inc | Absorbent pad: double layer with embossed garment facing layer |
| US5454800A (en) † | 1993-05-12 | 1995-10-03 | Kimberly-Clark Corporation | Absorbent article |
| KR100355653B1 (en) * | 1993-06-28 | 2003-03-15 | 더 프록터 앤드 갬블 캄파니 | Absorbent articles with fluid directing means |
| CA2153125A1 (en) * | 1994-08-31 | 1996-03-01 | Frank Paul Abuto | Liquid-absorbing article |
| US8847002B2 (en) | 2011-05-19 | 2014-09-30 | Kimberly-Clark Worldwide, Inc. | Absorbent article containing apertures arranged in registration with an embossed wave pattern |
| US9044356B2 (en) | 2011-05-19 | 2015-06-02 | Kimberly-Clark Worldwide, Inc. | Absorbent article having enhanced leakage protection |
| US9173782B2 (en) | 2013-03-28 | 2015-11-03 | Kimberly-Clark Worldwide, Inc. | Coordinated apertured and embossed topsheet layer materials, and absorbent articles containing such |
| US11253407B2 (en) | 2015-11-30 | 2022-02-22 | Kimberly-Clark (China) Co., Ltd. | Absorbent core layer and absorbent personal care article containing such layer |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3371667A (en) * | 1964-06-11 | 1968-03-05 | Johnson & Johnson | Article for absorbing body exudates |
| US3494362A (en) * | 1967-05-01 | 1970-02-10 | Johnson & Johnson | Absorbent pad |
| GB1377801A (en) * | 1972-01-11 | 1974-12-18 | Johnson & Johnson | Disposable diaper |
| US3881490A (en) * | 1973-12-20 | 1975-05-06 | Kimberly Clark Co | Thin, flexible absorbent pads |
| FR2354753A1 (en) * | 1976-06-14 | 1978-01-13 | Franco Pierre | EXTERNAL PERIODIC PADDING FOR DISPOSAL |
| ZA773902B (en) * | 1976-08-09 | 1979-02-28 | Colgate Palmolive Co | Absorbent article with improved pad |
| US4223677A (en) * | 1979-05-11 | 1980-09-23 | Scott Paper Company | Absorbent fibrous structure and disposable diaper including same |
| US4259958A (en) * | 1979-06-06 | 1981-04-07 | Riegel Textile Corporation | Multi-layer absorbent pad for disposable absorbent articles and process for producing same |
| FR2462153A1 (en) * | 1979-08-03 | 1981-02-13 | Oreal | ABSORBENT ARTICLE, IN PARTICULAR HYGIENIC TOWEL |
| FR2470590B1 (en) * | 1979-12-03 | 1986-08-01 | Colgate Palmolive Co | ABSORBENT ARTICLE PROVIDED WITH A MULTILAYER PAD |
-
1981
- 1981-11-19 ZA ZA818029A patent/ZA818029B/en unknown
- 1981-11-19 AU AU77648/81A patent/AU7764881A/en not_active Abandoned
- 1981-11-25 NL NL8105333A patent/NL8105333A/en not_active Application Discontinuation
- 1981-11-26 GB GB8135714A patent/GB2089214A/en active Pending
- 1981-11-26 MX MX190299A patent/MX153899A/en unknown
- 1981-11-27 KR KR1019810004601A patent/KR830007061A/en unknown
- 1981-11-30 IT IT49802/81A patent/IT1172116B/en active
- 1981-11-30 CA CA000391165A patent/CA1157204A/en not_active Expired
- 1981-11-30 BR BR8107793A patent/BR8107793A/en unknown
- 1981-12-01 FR FR8122522A patent/FR2494989A1/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5466232A (en) * | 1988-09-12 | 1995-11-14 | Johnson & Johnson Inc. | Unitized sanitary napkin |
| US5797894A (en) * | 1988-09-12 | 1998-08-25 | Johnson & Johnson, Inc. | Unitized sanitary napkin |
Also Published As
| Publication number | Publication date |
|---|---|
| MX153899A (en) | 1987-02-11 |
| GB2089214A (en) | 1982-06-23 |
| NL8105333A (en) | 1982-07-01 |
| BR8107793A (en) | 1982-08-31 |
| FR2494989A1 (en) | 1982-06-04 |
| IT8149802A0 (en) | 1981-11-30 |
| IT1172116B (en) | 1987-06-18 |
| ZA818029B (en) | 1982-10-27 |
| KR830007061A (en) | 1983-10-14 |
| AU7764881A (en) | 1982-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |