WO1999063925A9 - Unitary absorbent structure containing superabsorbent polymer - Google Patents
Unitary absorbent structure containing superabsorbent polymerInfo
- Publication number
- WO1999063925A9 WO1999063925A9 PCT/US1999/013174 US9913174W WO9963925A9 WO 1999063925 A9 WO1999063925 A9 WO 1999063925A9 US 9913174 W US9913174 W US 9913174W WO 9963925 A9 WO9963925 A9 WO 9963925A9
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- containment
- liquid
- fibers
- storage layer
- Prior art date
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
- A61F13/53—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
- A61F13/531—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 a homogeneous 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
Definitions
- the core may also include superabsorbent polymer (SAP) particles, granules, flakes or fibers.
- SAP superabsorbent polymer
- This core is typically referred to as a storage layer.
- market demand for an increasingly thinner and more comfortable absorbent article has increased.
- Such an article may be obtained by decreasing the thickness of the diaper core, by reducing the amount of fibrous material used in the core while increasing the amount of SAP particles, and by calendaring or pressing the core to reduce caliper and hence, increase density.
- Such higher density cores do not absorb liquid as rapidly as lower density cores because densification of the core results in smaller effective pore size. Accordingly, to maintain suitable liquid absorption, it is necessary to provide a lower density layer having a larger pore size above the high density absorbent core to increase the rate of uptake of liquid discharged onto the absorbent article.
- the low density layer is typically referred to as an acquisition layer.
- Multiple layer absorbent core designs involve a more complicated manufacturing process.
- FIG. 1 is a cross-section of a preferred unitary absorbent structure of the present invention.
- the absorbent structure has the absorbent capacity of an unbonded airfelt structure with improved particle containment and may be delivered in roll-goods form, and is particularly useful as an absorbent core for disposable absorbent articles such as diapers, adult incontinence pads and briefs, and feminine sanitary napkins.
- the absorbent structure of the present invention includes a multilayer fibrous structure 10, having acquisition 2, distribution 4 and storage 14 zones.
- the acquisition and distribution zones of the structure are provided by acquisition - distribution layer 12 (ADL) which can be preformed or formed concurrently with the storage layer.
- ADL acquisition - distribution layer 12
- the bonded structure may be formed by airlaid, wetlaid, thermobonding, carding or like techniques .
- the storage zone of the structure is provided by an airfelt layer of cellulosic fiber 6.
- the acquisition layer side of the ADL is 80-90% by weight 6.7 wt/length of fiber dtex in size by 6mm in cut length polyester (PET) fiber bonded with 10-20% by weight of latex.
- the bottom or distribution layer is 80-90% fiberized fluff cellulose fibers bonded with 10-20% of an aqueous binder.
- the total basis weight of the ADL is 60 to 80 gsm and the top synthetic fiber layer is 25 to 50% of the total basis weight of the ADL.
- a previously manufactured airlaid ADL is unwound upstream of the airfelt layer forming and dosing heads.
- the containment layer is then unwound onto the airfelt layer.
- the containment layer is sealed to contain the airfelt layer, SAP and other particulates.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU43390/99A AU4339099A (en) | 1998-06-08 | 1999-06-08 | Unitary absorbent structure containing superabsorbent polymer |
KR1020007013883A KR20010052650A (en) | 1998-06-08 | 1999-06-08 | Unitary absorbent structure containing superabsorbent polymer |
JP2000553000A JP2002517282A (en) | 1998-06-08 | 1999-06-08 | Single absorbent structure containing superabsorbent polymer |
CA002334343A CA2334343A1 (en) | 1998-06-08 | 1999-06-08 | Unitary absorbent structure containing superabsorbent polymer |
EP99955416A EP1087743A1 (en) | 1998-06-08 | 1999-06-08 | Unitary absorbent structure containing superabsorbent polymer |
BR9911528-0A BR9911528A (en) | 1998-06-08 | 1999-06-08 | Unit absorbent structure containing superabsorbent polymer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8845498P | 1998-06-08 | 1998-06-08 | |
US60/088,454 | 1998-06-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999063925A1 WO1999063925A1 (en) | 1999-12-16 |
WO1999063925A9 true WO1999063925A9 (en) | 2000-10-12 |
Family
ID=22211483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/013174 WO1999063925A1 (en) | 1998-06-08 | 1999-06-08 | Unitary absorbent structure containing superabsorbent polymer |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1087743A1 (en) |
JP (1) | JP2002517282A (en) |
KR (1) | KR20010052650A (en) |
AU (1) | AU4339099A (en) |
BR (1) | BR9911528A (en) |
CA (1) | CA2334343A1 (en) |
WO (1) | WO1999063925A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1299587B1 (en) * | 2000-07-11 | 2008-10-01 | Polymer Group, Inc. | Multi-component nonwoven fabric for use in disposable absorbent articles |
US6664437B2 (en) | 2000-12-21 | 2003-12-16 | Kimberly-Clark Worldwide, Inc. | Layered composites for personal care products |
US20020169428A1 (en) | 2001-05-11 | 2002-11-14 | Kimberly-Clark Worldwide, Inc. | Absorbent article having a multilayer blended core and a method of forming |
US6575952B2 (en) | 2001-05-11 | 2003-06-10 | Kimberly-Clark Worldwide, Inc. | Absorbent article having a multilayer absorbent core |
US6838590B2 (en) | 2001-06-27 | 2005-01-04 | Kimberly-Clark Worldwide, Inc. | Pulp fiber absorbent composites for personal care products |
US6759567B2 (en) | 2001-06-27 | 2004-07-06 | Kimberly-Clark Worldwide, Inc. | Pulp and synthetic fiber absorbent composites for personal care products |
EP1448375B2 (en) | 2001-11-09 | 2012-08-01 | Buckeye Technologies Inc. | Unitary absorbent multilayered core |
US6890622B2 (en) | 2001-12-20 | 2005-05-10 | Kimberly-Clark Worldwide, Inc. | Composite fluid distribution and fluid retention layer having selective material deposition zones for personal care products |
US7745685B2 (en) | 2005-10-31 | 2010-06-29 | Kimberly-Clark Worldwide, Inc. | Absorbent articles with improved odor control |
US9724250B2 (en) | 2012-11-30 | 2017-08-08 | Kimberly-Clark Worldwide, Inc. | Unitary fluid intake system for absorbent products and methods of making same |
EP3052564A4 (en) * | 2013-09-30 | 2017-06-28 | Kimberly-Clark Worldwide, Inc. | Thermoplastic article with odor control system |
EP3569210B1 (en) | 2018-05-15 | 2022-04-27 | The Procter & Gamble Company | Disposable absorbent articles |
GB2573995A (en) * | 2018-05-15 | 2019-11-27 | Glatfelter Falkenhagen Gmbh | Absorbent cores for disposable absorbent articles |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4988344A (en) * | 1988-05-24 | 1991-01-29 | The Procter & Gamble Company | Absorbent articles with multiple layer absorbent layers |
US5460622A (en) * | 1991-01-03 | 1995-10-24 | The Procter & Gamble Company | Absorbent article having blended multi-layer absorbent structure with improved integrity |
US5681300A (en) * | 1991-12-17 | 1997-10-28 | The Procter & Gamble Company | Absorbent article having blended absorbent core |
US5387208A (en) * | 1993-07-26 | 1995-02-07 | The Procter & Gamble Co. | Absorbent core having improved dry/wet integrity |
-
1999
- 1999-06-08 CA CA002334343A patent/CA2334343A1/en not_active Abandoned
- 1999-06-08 EP EP99955416A patent/EP1087743A1/en not_active Withdrawn
- 1999-06-08 AU AU43390/99A patent/AU4339099A/en not_active Abandoned
- 1999-06-08 BR BR9911528-0A patent/BR9911528A/en not_active Application Discontinuation
- 1999-06-08 WO PCT/US1999/013174 patent/WO1999063925A1/en not_active Application Discontinuation
- 1999-06-08 KR KR1020007013883A patent/KR20010052650A/en not_active Application Discontinuation
- 1999-06-08 JP JP2000553000A patent/JP2002517282A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
KR20010052650A (en) | 2001-06-25 |
EP1087743A1 (en) | 2001-04-04 |
CA2334343A1 (en) | 1999-12-16 |
WO1999063925A1 (en) | 1999-12-16 |
AU4339099A (en) | 1999-12-30 |
JP2002517282A (en) | 2002-06-18 |
BR9911528A (en) | 2001-09-25 |
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