WO2007077215A1 - Noyau absorbant multicouche pour article d'hygiene absorbant et produit d'hygiene absorbant contenant ce noyau - Google Patents

Noyau absorbant multicouche pour article d'hygiene absorbant et produit d'hygiene absorbant contenant ce noyau Download PDF

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Publication number
WO2007077215A1
WO2007077215A1 PCT/EP2007/000021 EP2007000021W WO2007077215A1 WO 2007077215 A1 WO2007077215 A1 WO 2007077215A1 EP 2007000021 W EP2007000021 W EP 2007000021W WO 2007077215 A1 WO2007077215 A1 WO 2007077215A1
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WO
WIPO (PCT)
Prior art keywords
fibers
layer
absorbent
absorbent core
core according
Prior art date
Application number
PCT/EP2007/000021
Other languages
German (de)
English (en)
Inventor
Alvaro Garcia
Katja Lerner
Original Assignee
Johnson & Johnson Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Johnson & Johnson Gmbh filed Critical Johnson & Johnson Gmbh
Publication of WO2007077215A1 publication Critical patent/WO2007077215A1/fr

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Classifications

    • 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
    • B32B5/24—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 one layer being a fibrous or filamentary layer
    • B32B5/26—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 one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/08—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 structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • 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
    • D04H13/00—Other non-woven fabrics
    • 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
    • A61F2013/530007—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 being made from pulp
    • A61F2013/530036—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 being made from pulp being made in chemically-modified cellulosic material, e.g. Rayon
    • 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
    • A61F2013/530131—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 being made in fibre but being not pulp
    • A61F2013/530226—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 being made in fibre but being not pulp with polymeric fibres
    • A61F2013/53024—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 being made in fibre but being not pulp with polymeric fibres being bicomponent fibres
    • 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
    • A61F2013/530481—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 superabsorbent materials, i.e. highly absorbent polymer gel materials
    • A61F2013/530489—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 superabsorbent materials, i.e. highly absorbent polymer gel materials being randomly mixed in with other material
    • 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
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0276—Polyester fibres
    • B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/04—Cellulosic plastic fibres, e.g. rayon
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/12—Conjugate fibres, e.g. core/sheath or side-by-side
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/728—Hydrophilic
    • 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
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/14—Velocity, e.g. feed speeds
    • 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
    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins

Definitions

  • the present invention relates to a multi-layered absorbent core for a sanitary absorbent article and to personal care absorbent products, in particular feminine hygiene absorbent feminine hygiene products comprising at least one absorbent core of the invention.
  • EP 1 030 633 B1 deals with absorbent articles, such as panty liners and sanitary napkins, which conform well to the body and thus reduce the risk of Reduce leakage.
  • the absorbent article according to EP 1 030 633 Bl is characterized by a bending resistance which is not greater than 100 g.
  • the absorbent core is in this case composed of a so-called "high loft" material having a density of preferably less than 0.01 g / cm 3.
  • thermoly bonded, kadiere polyester fiber webs having a basis weight of about 50 g / m 2
  • wood pulp fibers, meltblown polymer fibers, regenerated cellulose fibers and superabsorbent materials are also suitable for the core
  • blends of synthetic polymer fibers, cellulosic fibers and fibers of a superabsorbent, hydrogel-forming polymer are used according to EP 1 030 633 B.
  • the superabsorbent hydrogel-forming polymer can These airlaid nonwovens may, for example, be solidified by means of needlepunching If EP 1 030 633 B1 discloses an absorbent core with a layered structure, this is the airlaid fabric described above.
  • a multi-layer absorbent core having a front and a back side for a sanitary absorbent article comprising at least a first layer having a front and a back containing a blend of superabsorbent fibers, multicomponent fibers, and regenerated cellulose based fibers and / or Polyester fibers, and at least a second layer having a front and a back containing a mixture of multicomponent fibers and superabsorbent fibers, wherein the front or back of the first layer is adjacent to the back of the second layer.
  • Another embodiment of the invention provides for combining at least two of the above-described multilayer absorbent cores.
  • the respective outer surfaces of the second layer of the first core and of the first layer of the second core, for example the back of the second layer and the front of the first layer preferably rest against each other or at least in large part, i. with a common overlap area of more than 50%, adjacent.
  • the absorbent core of the present invention further comprises at least a third layer having a front and a back containing a blend of superabsorbent fibers, regenerated cellulose fibers and multicomponent fibers at least partially disposed between the first and second layers ,
  • a further embodiment according to the invention provides for combining at least two of the multilayer absorbent cores described immediately above.
  • the respective outer surfaces of the second layer of the first core and the first layer of the second core for example, the back of the second layer and the front of the first layer, at least partially abut each other or are at least in large part, ie with a common overlap area of more than 50%, adjacent.
  • the cores of the invention are preferably configured flat with opposite upper and lower sides.
  • the peripheral edge regions can assume a multiplicity of different cross-sectional geometries.
  • the thickness of the planar cores according to the invention can be varied within wide ranges. Very thin cores, e.g. with a thickness in the range of about 1 to 5 mm, can be realized as well as thicker or very thick cores in the range of 5 to 20 mm, which with thick as well as in particular very thin cores invention, the desired properties sought with the present invention , as a very good absorption and retention capacity with high flexibility, can be achieved.
  • the planar cores according to the invention have a longitudinal axis and a smaller dimensioned transverse axis which can be arranged perpendicular thereto.
  • the fibers based on regenerated cellulose e.g. Modal, cupro, lyocell and in particular viscose fibers and / or that the polyester fibers polyethylene terephthalate fibers and / or that the multicomponent or multicomponent fibers bicomponent fibers, in particular
  • Natural cellulose fibers are obtained, for example, from so-called wood fiber pulp. Their preparation and processing is well known to those skilled in the art. The same applies to regenerated cellulose fibers. Suitable regenerated cellulose also includes cellulose acetate fibers.
  • Lyocell fibers are regenerated cellulose fibers which are particularly environmentally friendly to produce. These fibers are obtained by extrusion of an aqueous tertiary amine N-oxide, for example N-methymorpholine N-oxide, dissolved cellulose into an aqueous coagulation bath by the solvent spinning method. For further details regarding the production process of lyocell fibers, see US 5,094,690.
  • Lyocell fibers are more similar in their property profile to cotton fibers than rayon fibers. Lyocell fibers are characterized in particular by a high strength in the wet state. Lyocell fibers can be purchased, for example, from the companies Acordis Cellulosic Fiber under the trade name Tencel or the company Lenzing Fibers under the trade name Lenzing Lyocell.
  • Suitable multicomponent fibers include, for. B. bi- and tricomponent fibers.
  • bicomponent fibers is generally understood those fibers in which two different polymers are present in non-homogeneous form next to each other. This may mean in one embodiment that two polymers are arranged side by side in a fiber strand side by side.
  • a first polymer may form the core which is enveloped by a second polymer.
  • a first polymer may be completely enveloped by a second polymer to form individual islands in the second polymer.
  • Suitable bicomponent fibers are generally composed of two thermoplastic polymers, for example polyolefins and polyamides, polyolefins and polyesters or polyamides and polyesters.
  • bicomponent fibers based on polyolefins and polyesters in particular comprising the combinations polyethylene / polyethylene terephthalate and polypropylene / polyethylene terephthalate.
  • the bicomponent fiber is a polyethylene / polypropylene fiber, a polypropylene / polyethylene terephthalate fiber, a Polyethylene / polyethylene terephthalate fiber, a polyethylene terephthalate / co-polyethylene terephthalate fiber or any mixture thereof.
  • Bi-component fibers based on polyethylene and polypropylene are particularly preferred.
  • absorbent cores in which the first, second and / or third layers comprise layers produced using the air-through-bonding technique.
  • the first layer has a basis weight in the range from 10 to 90 g / m 2 and / or the second layer has a basis weight in the range from 10 to 90 g / m 2 and / or the third layer has a basis weight in the range of 10 to 90 g / m 2 .
  • Particularly preferred absorbent cores are characterized in that the fluid retention capacity of the core is at least twelve times the dry weight thereof.
  • the absorbent cores of the present invention are preferably capable of retaining at least 20% by weight of total absorbed amount of fluid in the absorbent core when pressure is applied.
  • the absorbent core has a flexural stiffness, as determined by the circular bonding test, of not more than 100 g.
  • Very thin absorbent cores are erf ⁇ ndungshiel also accessible by calendering them at least partially.
  • the first, second and / or third layer at least partially a fiber mixture obtainable by carding.
  • absorbent personal care products in particular feminine hygiene absorbent products, such as panty liners and sanitary napkins, which comprise at least one absorbent core according to the invention.
  • These absorbent products generally have at least one liquid-permeable cover layer and at least one liquid-impermeable barrier layer, between which at least one absorbent core according to the invention is provided.
  • the absorbent hygiene product comprises at least two abutting absorbent cores according to the invention, the front or back side of the first core being adjacent to the rear or front side of the second core.
  • the multilayer absorbent cores according to the invention are distinguished from comparable systems by a good absorption capacity and an increased retention capacity, in particular under pressure. This applies in particular to systems with higher basis weights. In addition, a considerably increased flexibility is achieved with the structures according to the invention. Above all, the absorbent cores of the invention are also distinguished from comparable systems produced by means of airlaid technology.
  • the viscose fiber is Lenzing viscose fibers from Lenzing
  • the bicomponent fiber (Bico) is fiber ES-Cure from FiberVisions
  • the superabsorbent fiber (SAF) is the fiber "super absorbent fiber 102" from OASIS.
  • the fibers of the first and second layers according to Example I and the first, second and third layers according to Example III were each homogeneously mixed using the carding technique.
  • the individual layers were consolidated by means of air-through-bonding technique, and obtained the multilayer composite by calendering.
  • the double structures of the absorbent cores according to Examples II and IV were obtained by overlaying and bonding the multilayer systems according to Examples I and III, respectively, by means of calendering.
  • the comparative absorbent structure is the commercially available structure Concert MH 102 (80 g / m 2 ).
  • the multi-layered absorbent cores of the invention are characterized by a very advantageous absorbency, although they have a substantially lower basis weight than conventional absorbent core structures. Without wishing to be bound by any theory, it is presently believed that the absorbent structures of the present invention do not exhibit gelation-related flow path blockages.
  • the advantageous properties of the absorbent cores according to the invention can also be achieved with very flexible structures with regard to absorption and retention capacity.
  • the absorbent cores according to Examples I and II have a bending resistance according to the Circular Bending Test of about 8 and 10 g, respectively.
  • the absorbent core according to the comparative example has a bending resistance according to the circular bending test of about 60 g.
  • the Circular Bending Test is generally performed with an Instron 4411, Series IX, with a 6.35 mm diameter plunger and a spherical attachment with a needle point 0.8 mm in diameter.
  • the ram has a travel distance of 16.35 mm and is moved up and down at a speed of 500 mm / min.
  • the layer structures to be examined had a size of 38 ⁇ 38 mm 2 and were conditioned for 24 hours at 20 ° C. ⁇ 2 ° C. and 65% ⁇ 2% atmospheric humidity before the start of the test.
  • the test bodies were polished over the opening Metal plate whose circular opening at the bottom of the plate had a diameter of 18.75 mm and at the top of 28.25 mm. The edge of this circular opening was inclined by 45 °. Maximum flexural stiffness was measured while the plunger deflected the 6.35 mm test product downwards. The reproduced values represent the arithmetic mean of a total of ten individual measurements.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Textile Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

La présente invention concerne un noyau absorbant multicouche pourvu d'une face avant et d'une face arrière, ce noyau étant destiné à un article d'hygiène absorbant. Ledit noyau comprend au moins une première couche pourvue d'une face avant et d'une face arrière, contenant un mélange de fibres superabsorbantes, de fibres multicomposées et de fibres à base de cellulose régénérées et/ou de fibres de polyester, ainsi qu'au moins une deuxième couche pourvue d'une face avant et d'une face arrière, contenant un mélange de fibres multicomposées et de fibres superabsorbantes, la face avant ou la face arrière de la première couche étant adjacente à la face arrière ou à la face avant de la deuxième couche, respectivement. L'invention concerne en outre un produit absorbant d'hygiène féminine contenant au moins un noyau absorbant selon l'invention.
PCT/EP2007/000021 2006-01-04 2007-01-03 Noyau absorbant multicouche pour article d'hygiene absorbant et produit d'hygiene absorbant contenant ce noyau WO2007077215A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610000779 DE102006000779A1 (de) 2006-01-04 2006-01-04 Mehrschichtiger absorbierender Kern für einen absorbierenden Hygieneartikel sowie absorbierendes Hygieneprodukt, enthaltend diesen Kern
DE102006000779.4 2006-01-04

Publications (1)

Publication Number Publication Date
WO2007077215A1 true WO2007077215A1 (fr) 2007-07-12

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PCT/EP2007/000021 WO2007077215A1 (fr) 2006-01-04 2007-01-03 Noyau absorbant multicouche pour article d'hygiene absorbant et produit d'hygiene absorbant contenant ce noyau

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Country Link
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WO (1) WO2007077215A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011011063A1 (de) 2011-02-11 2012-08-16 Winkler + Dünnebier Gmbh Verfahren und Anlage zur Herstellung von Hygieneartikeln
DE102013211945A1 (de) 2013-06-24 2014-12-24 Winkler + Dünnebier Gmbh Verfahren und Anlage zur Herstellung von Hygieneartikeln

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1013290A1 (fr) * 1998-12-17 2000-06-28 Fort James Corporation Composites absorbants multicouches ayant une ou plusieurs couches de transfert perforées
EP1030633A1 (fr) * 1997-11-13 2000-08-30 The Procter & Gamble Company Article absorbant tres efficace, utile avec une culotte hygienique
WO2003086259A1 (fr) * 2002-04-12 2003-10-23 Rayonier Products And Financial Services Company Noyaux absorbants presentant des proprietes d'absorption ameliorees
WO2006034096A1 (fr) * 2004-09-16 2006-03-30 Mcneil-Ppc, Inc. Serviette hygienique absorbante pouvant former un drape et materiaux destines a des articles hygieniques absorbants pouvant former un drape

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1030633A1 (fr) * 1997-11-13 2000-08-30 The Procter & Gamble Company Article absorbant tres efficace, utile avec une culotte hygienique
EP1013290A1 (fr) * 1998-12-17 2000-06-28 Fort James Corporation Composites absorbants multicouches ayant une ou plusieurs couches de transfert perforées
WO2003086259A1 (fr) * 2002-04-12 2003-10-23 Rayonier Products And Financial Services Company Noyaux absorbants presentant des proprietes d'absorption ameliorees
WO2006034096A1 (fr) * 2004-09-16 2006-03-30 Mcneil-Ppc, Inc. Serviette hygienique absorbante pouvant former un drape et materiaux destines a des articles hygieniques absorbants pouvant former un drape

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