US3545441A - Absorbent core - Google Patents

Absorbent core Download PDF

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Publication number
US3545441A
US3545441A US3545441DA US3545441A US 3545441 A US3545441 A US 3545441A US 3545441D A US3545441D A US 3545441DA US 3545441 A US3545441 A US 3545441A
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Prior art keywords
core
napkin
shape
portion
mass density
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Expired - Lifetime
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Gunnar Gravdahl
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SABA GmbH
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SABA GmbH
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/531Absorbent 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 a homogeneous composition through the thickness of the pad
    • A61F13/532Absorbent 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 a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/535Absorbent 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 inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/537Absorbent 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
    • A61F13/53708Absorbent 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
    • A61F13/53717Absorbent 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 the layer having a promotional function on liquid propagation in the horizontal direction
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15203Properties of the article, e.g. stiffness or absorbency
    • A61F2013/15284Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
    • A61F2013/15422Density
    • A61F2013/1543Density with a density gradient in the horizontal plane
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F2013/530437Absorbent 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 a part with elevated absorption means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F2013/53445Absorbent 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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
    • A61F13/534Absorbent 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
    • A61F13/537Absorbent 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
    • A61F13/53708Absorbent 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
    • A61F2013/53721Absorbent 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
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/24992Density or compression of components

Description

United States Patent [72] Inventor Gunnar Gravdahl [56] References Cited Hashim, Norway UNITED STATES PATENTS No 123%?1968 1,974,578 9/1934 Medoff 128/290 2,964,039 12/1960 Johnson, Jr., et a1 128/290 [451 Patented 3 430 629 3/1969 Mu h 128/284 Assignee Saba s 113 y Tonsberg, Norway Primary Examinercharles F. Rosenbaum [32] Priority Feb. 8, 1967 Attorney-Wenderoth, Lind and Ponack [33] Norway [31 No. 166,765

ABSTRACT: An absorbent, pillow-shaped core, intended for [54] Q use in a sanitary napkin, a diaper, compresses or the like, rawmg made of fibrous material, the fibrous material provided with [52] US. Cl 128/284, gradually varying mass density, such that a greater number of 161/124 fibers per volume is present in the portion of the core having [51] Int. Cl A6lf 13/16 the greatest need for absorption power, the mass density [50] Field of Search 128/284, gradually reduced in direction away from said portion, the

287, 290, 296; 16 l/l24 core having substantially the same thickness all over.

PATENTED on: 8 I970 GNNAR GR AVDAHL JNVENTOR.

ABSORBENT CORE This invention relates to fibrous, absorbent, pillow-shaped cores of the kind used in sanitary napkins, diapers, compresses etc.

The invention is particularly useful for disposable sanitary napkins and shall in the following be described and illustrated. The invention can, however, be utilized for a number of various absorbent articles of the kind which are to be used once only, i.e. diapers, compresses, as long as these articles comprise an absorbent pillow-shaped core, which is encompassed by some kind of a wrapper.

A disposable sanitary napkin consists usually of two main parts, namely the absorbent core, which during use shall absorb and confine the moisture, and a wrapper which primarily keeps the core in place and carrying same, and also serves the purpose of preventing that the absorbed liquid leaves the napkin.

A sanitary napkin core is usually about to cm. long and 4 to 8 cm. wide. The secretion of the menstruation liquid takes place, however, in a relatively concentrated manner. The need for absorbing capacity or ability is therefore far the greatest in the centre portion of the napkin, since it is in this area the substantial part of the liquid not only must be absorbed, but also must be confined. In order to reach optimal utilization of the total absorbing capacity of the napkin it is of importance that the napkin is so constructed and shaped that the moisture or liquid is distributed also sideways or laterally, and then preferably in the longitudinal direction of the core.

When hitherto faced with the task to make a core having the greatest absorbing' power or ability in the centre portion of the core, the industry has provided a core, which viewed in side elevation presents a substantially elliptical shape. Such a shape is sometimes advantageous and sometimes disadvantageous. In a sanitary napkin it will be advantageous that the napkin has such a shape during use, since a flattened front portion on the napkin will be less revealing under fight clothes, and a flattened rear portion will be more comfortable when the wearer is sitting. An elliptical shape will, however, involve disadvantages during the production stage and in connection with the further handling in factory, particularly in connection with'mass packing machinery. It is also difficult to make an attractive packed product when same has an uneven thickness, such as the before mentioned elliptically-shaped article, particularly if the wrapping material is soft and flexible, for instance a plastic material.

The object of the invention is to provide a new embodiment for such cores, with improved absorbing characteristics and also possessing a shape which simplifies handling and packing and provides an attractive product.

The invention is based on the concept of making the fibrous pillow-shaped core such that the fibre material is present in the core with gradually varying mass quantity per unit volume in the core such that a greater number of fibres per volume constitutes the portion of the core having the greatest need for absorbent ability, the mass quantity per volume decreasing gradually in all directions away from said portion, the core having substantially the same thickness all over. A core in accordance with the invention will thus possess a systematic or predetermined gradually-varying mass-density distribution.

Within this inventive concept one can make cores having a wide variety of characteristics, making it possible to suit any particular need and having the characteristics and qualities desired.

In connection with a core for a sanitary napkin the concept will involve that the core mass is designed to have the greatest density in the centre portion of the core, the density gradually decreasing to both sides laterally outwardly and in longitudinal direction of the core, simultaneously as the cross-sectional area depth of the core can be made to be substantially constant. Hereby is obtained that the absorbing capacity is concentrated in the area where the need is greatest, i.e. in the centre portion, since this portion will contain most mass per volume. Simultaneously, however, a gradually reduced mass density to both sides in longitudinal direction of the core will result in that the absorbed liquid easily will be distributed from the centre of the core. The resistance against liquid penetration and thus the liquid distribution ability of the core will (always) increase as the mass density decreases. This property is efiectively utilized by the invention such that conventional special distribution layers or the like can be entirely omitted.

A core in accordance with the invention is suitably made by having the core material, for instance defibrated cellulosis continuously produced in the shape of a web in per se known machinery having varying or alternating mass density in the longitudinal direction, the cycles or frequency of the alternations corresponding to the desired length of each individual sanitary napkin core. Simultaneously the web is given uniform or substantially uniform thickness and width, i.e. constant cross-sectional area per unit length. The web is thereafter cut transversely through the portions having the least mass density into individual napkin cores.

In the following the invention shall be described in detail with reference to the accompanying drawing, where,

FIG. 1 shows a longitudinal sectional view through a core of conventional type,

FIG. 2 shows a similar longitudinal sectional view through a sanitary napkin core made in accordance with the present invention.

FIG. 3 shows the napkin core shown in FIG. 2, having the shape it will attain when the napkin wrapper is subject to tension and/or sideways compression.

The conventional napkin core 2, shown in FIG. 1, comprises several layers 4, 4, etc. each having decreasing length viewed from the centre portion, such that the core in longitudinal sec tion (and possibly in cross section) is attaining substantially elliptical shape, as indicated with dotted lines 6. One or more liquid distributing layers can bepositioned between the layers. In the FIG. is shown a distributing layer 8 in the centre of the core.

A napkin core 10 in accordance with the invention is shown in longitudinal section in FIG. 2. As it appears, the mass density-which is visualized by the degree of the hatching-is vary- .ing, and it is greatest in the centre. Furthermore, it will be observed that the core, seen in longitudinal section, has a rectangular shape. To what extent the rectangular cross-sectional shape of the core will be retained subsequently (and provided with wrapping) will depend upon several factors, such as the flexibility of the material (i.e. the elasticity of the fibres), the mass density and the specific properties of the material. By treating the core with binding, adhesion or stiffening compositions one can eliminate or reduce the propensity of the materialto return to the original shape and condition subsequent to a compression or squeezing together.

In most cases the core will possess, however, subsequent to its making, some inherent propensity to expand, the magnitude of this expansion force will be somewhat proportional to the mass density, such that the core may, if desired, sub sequent to its making immediately attain a shape which can be compared with the shape of the core shown in FIG. 1, but a core in accordance with the invention will still retain such greater mass density in the centre portion, such as illustrated in FIG. 2.

When making cores for sanitary napkins it has proved advantageous, as mentioned before, to make the core such that the core has a substantially rectangular shape, viewed in longitudinal section, among other reasons because this shape facilitates the handling of the core and the packing of the napkins, and which among other operations involves that the mp respective ends are attached to a belt) particularly the end portions of the napkin core will be subject to compression or sideways squeezing, such as schematically illustrated in FIG.

ing mass density from the centre the squeezing together of the end portions of a core in accordance with the invention will be much larger, and the compression forces K towards the end portions of the core also will result in a force component designated with the capital letter F directed towards the centre and thereby contribute to deliberation of inherent expansion propensity of the fibres and the mass in the centre portion of the core, so that the centre portion in fact may tend to expand. Tests have shown, however, that a napkin core in accordance with the invention still will retain a much larger mass density in the centre portion, so that this portion possesses greater absorbing capacity and maintain ability to distribute moisture and liquid to the surrounding, more porous material.

In that the end portions of .the napkin core are squeezed together-more or less-during use, the napkin will thereby attain the desirous elliptical cross-sectional shape enhancing wearing comfort etc. The napkin core may nevertheless initially have a rectangular cross-sectional shape with the described advantages attained thereto.

By varying the mass density of the core, particularly the mass density variation in longitudinal direction, it has proved to be possible to make napkin cores having just the absorbing and expanding qualities which are desirable for the particular need in question.

Iclaim:

1. An absorbent core having substantially the same thickness throughout before being used and not being subjected to external forces of compression, for use in a sanitary napkin, a diaper, compresses and the like comprising a flat unitary, integral body of absorbent fibrous material, said fibrous material in said body having a gradually varying mass density so that a greater number of fibres per volume is present in that portion of said body having the greatest need for absorbing power, said mass density being gradually reduced in a direction away from said portion.

2. An absorbent core in accordance with claim 1 wherein said body when exposed to substantially evenly distributed compressional forces against the side face areas thereof attains a substantially oval shape in a longitudinal cross section 3. An absorbent core in accordance with claim 1 wherein said body is resilient.

US3545441A 1967-02-08 1968-01-29 Absorbent core Expired - Lifetime US3545441A (en)

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Application Number Priority Date Filing Date Title
NO16676567 1967-02-08

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US3545441A true US3545441A (en) 1970-12-08

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US3545441A Expired - Lifetime US3545441A (en) 1967-02-08 1968-01-29 Absorbent core

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BE (1) BE710471A (en)
DE (1) DE1616138A1 (en)
DK (1) DK117375B (en)
ES (1) ES146625Y (en)
FI (1) FI46024C (en)
FR (1) FR1554256A (en)
GB (1) GB1203682A (en)
NL (1) NL151258B (en)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51125992A (en) * 1975-08-18 1976-11-02 Enzeru Kk Sanitary napkin
US3993820A (en) * 1973-07-02 1976-11-23 Johnson & Johnson Non-woven product
US4054141A (en) * 1976-04-06 1977-10-18 Julius Schwaiger Absorptive material for hygienic purposes
US4057061A (en) * 1974-12-18 1977-11-08 Kabushiki Kaisha Angel Sanitary napkin
US4062362A (en) * 1975-12-29 1977-12-13 Colgate-Palmolive Company Disposable and self adjustable diapers
US4103062A (en) * 1976-06-14 1978-07-25 Johnson & Johnson Absorbent panel having densified portion with hydrocolloid material fixed therein
US4449979A (en) * 1980-08-26 1984-05-22 Johnson & Johnson Baby Products Company Absorbent structure having gradient densities
EP0212618A1 (en) * 1985-08-21 1987-03-04 Kimberly-Clark Corporation Absorbent article
US4820295A (en) * 1983-09-08 1989-04-11 Personal Products Company Absorbent body with fluid transport means
WO1990006096A1 (en) * 1988-12-06 1990-06-14 Mölnlycke AB Absorption body
US4994037A (en) * 1990-07-09 1991-02-19 Kimberly-Clark Corporation Absorbent structure designed for absorbing body fluids
US5009650A (en) * 1984-04-13 1991-04-23 Kimberly-Clark Corporation Absorbent structure designed for absorbing body fluids
US5047023A (en) * 1986-07-18 1991-09-10 The Procter & Gamble Company Absorbent members having low density and basis weight acquisition zones
US5176668A (en) * 1984-04-13 1993-01-05 Kimberly-Clark Corporation Absorbent structure designed for absorbing body fluids
US5330456A (en) * 1992-04-09 1994-07-19 Paragon Trade Brands, Inc. Disposable absorbent panel assembly
US5460622A (en) * 1991-01-03 1995-10-24 The Procter & Gamble Company Absorbent article having blended multi-layer absorbent structure with improved integrity
US5486167A (en) * 1991-01-03 1996-01-23 The Procter & Gamble Company Absorbent article having blended multi-layer absorbent structure with improved integrity
US5591149A (en) * 1992-10-07 1997-01-07 The Procter & Gamble Company Absorbent article having meltblown components
US5681300A (en) * 1991-12-17 1997-10-28 The Procter & Gamble Company Absorbent article having blended absorbent core
US6103953A (en) * 1991-12-17 2000-08-15 The Procter & Gamble Company Absorbent article having fused layers
US6441268B1 (en) * 1996-12-17 2002-08-27 Sca Hygiene Products Ab Absorbent structure that has a high degree of utilization
US6465379B1 (en) 1998-06-30 2002-10-15 Bki Holding Corporation Unitary absorbent material for use in absorbent structures
US6657101B1 (en) * 1999-08-30 2003-12-02 Sca Hygiene Products Ab Absorbent structure in an absorbent article
US20040054343A1 (en) * 2002-09-18 2004-03-18 Barnett Larry N. Horizontal density gradient absorbent system for personal care products
US20040186454A1 (en) * 2003-03-20 2004-09-23 Taketo Itoh Disposable diaper
US6974891B2 (en) * 1998-06-11 2005-12-13 Sca Hygiene Products Ab Absorbent structure
US7102054B1 (en) 1991-12-17 2006-09-05 The Procter & Gamble Company Absorbent article having fused layers
US20070078424A1 (en) * 2005-09-30 2007-04-05 Wu Lanying Z Curved absorbent article
EP1901693A1 (en) * 2005-07-13 2008-03-26 SCA Hygiene Products AB Absorbent article having improved fit
US20090131898A1 (en) * 1999-08-30 2009-05-21 Sca Hygiene Products Ab Absorbent foam material, a method of producing it and an absorbent structure containing said foam material
US8143472B1 (en) 1999-08-30 2012-03-27 Sca Hygiene Products Ab Absorbent structure in an absorbent article and a method of producing it
US9066837B2 (en) 2009-10-30 2015-06-30 Kimberly-Clark Worldwide, Inc. Absorbent article with annular absorbent member
US9649233B2 (en) 2012-04-25 2017-05-16 Kimberly-Clark Worldwide, Inc. Absorbent personal care articles having longitudinally oriented layers in discrete portions

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837338A (en) * 1972-11-24 1974-09-24 Kendall & Co Conformable nonwoven bandage
DE67377T1 (en) * 1981-06-11 1983-05-11 Kimberly-Clark Corp., 54956 Neenah, Wis., Us Laterally prestressed sanitary napkin.
US4685915A (en) * 1984-04-06 1987-08-11 The Procter & Gamble Company Disposable diaper having density and basis weight profiled absorbent core

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993820A (en) * 1973-07-02 1976-11-23 Johnson & Johnson Non-woven product
US4057061A (en) * 1974-12-18 1977-11-08 Kabushiki Kaisha Angel Sanitary napkin
JPS51125992A (en) * 1975-08-18 1976-11-02 Enzeru Kk Sanitary napkin
US4062362A (en) * 1975-12-29 1977-12-13 Colgate-Palmolive Company Disposable and self adjustable diapers
US4054141A (en) * 1976-04-06 1977-10-18 Julius Schwaiger Absorptive material for hygienic purposes
US4103062A (en) * 1976-06-14 1978-07-25 Johnson & Johnson Absorbent panel having densified portion with hydrocolloid material fixed therein
US4449979A (en) * 1980-08-26 1984-05-22 Johnson & Johnson Baby Products Company Absorbent structure having gradient densities
US4820295A (en) * 1983-09-08 1989-04-11 Personal Products Company Absorbent body with fluid transport means
US5176668A (en) * 1984-04-13 1993-01-05 Kimberly-Clark Corporation Absorbent structure designed for absorbing body fluids
US5009650A (en) * 1984-04-13 1991-04-23 Kimberly-Clark Corporation Absorbent structure designed for absorbing body fluids
EP0478011A3 (en) * 1985-08-21 1992-04-29 Kimberly-Clark Corporation Absorbent article
EP0212618A1 (en) * 1985-08-21 1987-03-04 Kimberly-Clark Corporation Absorbent article
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Also Published As

Publication number Publication date Type
BE710471A (en) 1968-06-17 grant
ES146625Y (en) 1979-04-01 grant
ES146625Y1 (en) grant
NL6801814A (en) 1968-08-09 application
DE1616138A1 (en) 1972-03-02 application
FI46024B (en) 1972-08-31 application
DK117375B (en) 1970-04-20 grant
GB1203682A (en) 1970-09-03 application
FI46024C (en) 1972-12-11 grant
FR1554256A (en) 1969-01-17 grant
NL151258B (en) 1976-11-15 application
ES146625U (en) 1969-07-16 application

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