DE2835822C3 - Absorbent Laminate and Process - Google Patents

Absorbent Laminate and Process

Info

Publication number
DE2835822C3
DE2835822C3 DE2835822A DE2835822A DE2835822C3 DE 2835822 C3 DE2835822 C3 DE 2835822C3 DE 2835822 A DE2835822 A DE 2835822A DE 2835822 A DE2835822 A DE 2835822A DE 2835822 C3 DE2835822 C3 DE 2835822C3
Authority
DE
Germany
Prior art keywords
laminate
absorbent layer
cover fleece
adhesive
fleece
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
Application number
DE2835822A
Other languages
German (de)
Other versions
DE2835822B2 (en
DE2835822A1 (en
Inventor
Paul Louviers Mazars
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kaysersberg SA
Original Assignee
Beghin Say SA
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 Beghin Say SA filed Critical Beghin Say SA
Publication of DE2835822A1 publication Critical patent/DE2835822A1/en
Publication of DE2835822B2 publication Critical patent/DE2835822B2/en
Application granted granted Critical
Publication of DE2835822C3 publication Critical patent/DE2835822C3/en
Expired legal-status Critical Current

Links

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
    • A61F13/45—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 shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/476—Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • 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
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/225—Mixtures of macromolecular compounds
    • 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
    • B32B23/00—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose
    • B32B23/02—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose in the form of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
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    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • 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
    • A61F13/56—Supporting or fastening means
    • A61F13/58—Adhesive tab fastener elements
    • 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
    • A61F13/45—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 shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F2013/4708—Panty-liner
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • A61F2013/53908—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 characterised by the connection of the absorbent layers with each other or with the outer layers with adhesive
    • 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
    • A61F13/539—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 characterised by the connection of the absorbent layers with each other or with the outer layers
    • A61F2013/5395—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 characterised by the connection of the absorbent layers with each other or with the outer layers with thermoplastic agent, i.e. softened by heat
    • 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
    • A61F13/56—Supporting or fastening means
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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    • 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
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    • B32B2262/0276—Polyester fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B32B2262/06—Vegetal fibres
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
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    • B32B2309/08—Dimensions, e.g. volume
    • B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
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Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Laminated Bodies (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Nonwoven Fabrics (AREA)
  • Materials For Medical Uses (AREA)

Description

Die Erfindung betrifft zunächst einen absorptionsfähigen Schichtstoff mit einer aus Zellulosefasern gebildeten Sauglage, einem porösen Deckvlies und einem Kunststoffilm als hydrophobem Träger, die miteinander jeweils flächig verbunden sind.The invention first relates to an absorbent laminate comprising one made of cellulose fibers formed absorbent layer, a porous cover fleece and a plastic film as a hydrophobic carrier, the are connected to each other flat.

Aus der DE-OS 24 60 712 ist ein solcher Schichtstoff bekannt Bei diesem ist zwischen der Deckschicht und dem hydrophoben Träger ein einlagiges Vlies angeordnet. Das Deckvlies ist mittels einer dünnen flächigen Schicht eines flexiblen Klebstoff s mit der Sauglage verbunden. Mit dem hydrophoben Träger ist die Sauglage mittels eines punktweise aufgebrachten Klebers verbunden. In dem Deckvlies und der Sauglauge ist ein Muster von in Abstand zueinander verlaufenden Prägelinien ausgebildet, dia sich im wesentlichen in Längsrichtung des Schichtstoffs erstrekken und den Rand des Schichtstoffs schneiden. Im Bereich der Prägelinien bilden sich in der Sauglage komprimierte Bereiche aus, in denen die Zellulosefasern nach vorheriger Feuchtigkeitskonditionierung untereinander über Wasserstoffbindungen verbunden sind.From DE-OS 24 60 712 is such a laminate known In this case, a single-layer fleece is arranged between the cover layer and the hydrophobic carrier. The cover fleece is by means of a thin flat Layer a flexible adhesive with the absorbent pad tied together. With the hydrophobic carrier, the absorbent layer is applied point by point Adhesive connected. In the cover fleece and the suction liquor there is a pattern of at a distance from one another running embossed lines formed, dia in extend substantially in the longitudinal direction of the laminate and cut the edge of the laminate. in the In the area of the embossed lines, compressed areas are formed in the absorbent layer, in which the cellulose fibers are connected to one another via hydrogen bonds after previous moisture conditioning.

Durch die flächige Schicht des Klebstoffs zwischen dem Deckvlies und der Sauglage wird der Eintritt der Flüssigkeit in die Sauglage behindert. Die komprimierten Bereiche unterhalb der Prägelinien lassen eine Verteilung der eingetretenen Flüssigkeit nur in Längsrichtung der Vorlage zu. Die Prägelinien sind aber erforderlich, um der einlagigen Sauglage die erforderliche Festigkeit aufzuprägen.The flat layer of adhesive between the cover fleece and the absorbent layer ensures that the Obstructed liquid in the suction position. The compressed areas below the embossed lines leave a Distribution of the liquid that has entered only in the longitudinal direction of the original. The embossed lines are, however required in order to impress the required strength on the single-layer absorbent layer.

Aus der DE-OS 21 07 426 ist ein Schichtstoff bekannt, bei dem die Sauglage zwischen einem Deckvlies und einem Träger aus mehreren Lagen besteht. Zum Halten der Sauglage wird das thermoplastisches Material enthaltende Deckvlies längs des Randes des Schicht-' Stoffs mit dem Träger durch Erwärmen verfo-rnt undFrom DE-OS 21 07 426 a laminate is known, in which the absorbent layer consists of several layers between a cover fleece and a carrier. To hold the absorbent layer is the thermoplastic material containing cover fleece along the edge of the layer ' The fabric is molded to the carrier by heating and

ίο mit dem Träger verbunden, so daß der Schichtstoff eineίο connected to the carrier so that the laminate has a

Randstruktur besitzt, die sich bei Verwsndung desEdge structure, which when using the Schichtstoffs als sanitäre Ein- oder Auflage fürLaminate as a sanitary insert or support for Unterwäsche für die Trägerin als sehr störend erweistUnderwear proves to be very annoying for the wearer Schließlich ist aus der FR-PS 22 00 740 ein absorp-Finally, from FR-PS 22 00 740 an absorbent

tionsfähiger Schichtstoff bekannt, der ebenfalls eine geschlossene Randstruktur aufweist Die Sauglage besteht aus zwei Teillagen und zwischen ihnen ist eine ein Paraffinmuster tragende Folie eingebracht Die Teillagen werden durch eine Außenhülle zusammengetion capable laminate known, which is also a has a closed edge structure The absorbent layer consists of two sub-layers and between them there is one a film bearing a paraffin pattern is introduced. The sub-layers are brought together by an outer cover halten.keep.

Der Erfindung liegt die Aufgabe zu Grunde, tinen absorptionsfähigen Schichtstoff der eingangs beschriebenen Art zu schaffen, bei dem der Eintritt der Flüssigkeit in die Sauglage und die Verteilung derselbenThe invention is based on the object of creating tinen absorbent laminate of the type described above, in which the entry of the Liquid in the suction layer and the distribution of the same in der Sauglage verbessert werden.can be improved in the suction position.

Diese Aufgabe wird gemäß diesem Teil der Erfindung dadurch gelöst, daß die Sauglage aus zwei Teiliagen besteht die miteinander verforniungsfrei durch über die Berührfläche punkt- oder streifenförmig verteiltenThis object is achieved according to this part of the invention in that the absorbent layer consists of two sub-layers consists of each other deforniungsfrei through over the Distributed point or strip-shaped contact surface

Kleber verbunden sind, und daß das Deckvlies ausAdhesive are connected, and that the cover fleece is made Polyester- und Polypropylenfasern besteht und daß diePolyester and polypropylene fibers and that the Verbindung mit der Sauglage nur durch erschmolzeneConnection with the suction layer only through melted Fasern des Deckvlieses gebildet istFibers of the cover fleece is formed Da die Verbindung des Deckvlieses mit der SauglageBecause the connection of the cover fleece with the absorbent layer

nur durch die erschmolzenen Fasern des Deckvlieses gebildet ist, d.h. ein gesonderter Klebstoff nicht erforderlich ist, wird durch den Aufbau der Verbindung der Eintrittsquerschnitt für den Eintritt von Flüssigkeit in die Sauglage durch das Deckvlies hindurch durch denis only formed by the melted fibers of the cover fleece, i.e. not a separate adhesive is required, the structure of the connection creates the inlet cross-section for the entry of liquid into the absorbent layer through the cover fleece through the

Aufbau der Verbindung nicht beschranktEstablishing the connection is not restricted

Um der Sauglage von vorgegebener für die Aufnahme der Flüssigkeit erforderlicher Gesamtdicke die nötige mechanische Festigkeit zu geben, wird sie aus zwei Teillagen aufgebaut. Der zwischen ihnen angeordAround the suction layer of the specified total thickness required for absorbing the liquid To give the necessary mechanical strength, it is made up of two sub-layers. The one between them nete punkt- oder streifenförmig verteilte Kleber dient einerseits der Verbindung der beiden Teillagen und andererseits bewirkt er eine Flüssigkeitsverteilung beim Übertritt der in die mit dem Deckvlies verbundenen Teiliage eingetretenen Flüssigkeit in die mit demNete glue distributed in dots or strips is used on the one hand the connection of the two sub-layers and on the other hand it causes a liquid distribution at The liquid that has entered the partial layer connected to the cover fleece passes into the with the

so hydrophoben Träger verbundene Teillage. Da der erfindungsgemäße Schichtstoff keine Prägelinien aufweist, d. h. das Deckvlies nicht mit Vertiefungen versehen ist, kann es nicht zum Ansammeln von aufzunehmender Flüssigkeit auf der Außenfläche desPartial layer connected in this way to hydrophobic carriers. Since the laminate according to the invention has no embossed lines, i. H. the cover fleece does not have indentations is provided, there can be no accumulation of liquid to be absorbed on the outer surface of the

Schichtstoffes kommen.Laminate come.

Vorzugsweise liegen die Polyester- und die Polypropylenfasern im Deckvlies in einem Gewichtsverhältnis von etwa 1 :1 vor. Eine besonders gleichmäßige Verteilung der in dieThe polyester and polypropylene fibers are preferably in a weight ratio in the cover fleece of about 1: 1. A particularly even distribution of the in the

Sauglage eingetretenen Flüssigkeit und eine besondersSuction layer entered liquid and a special one

hohe Festigkeit der Verbindung der beiden Teillagenhigh strength of the connection between the two sub-layers wird erreicht, wenn die Verbindung des Deckvlieses mitis achieved when the connection of the cover fleece with der Sauglage längs sich kreuzender Linien gebildet ist.the absorbent layer is formed along intersecting lines.

Um z. B. bei Einsatz des Schichtstoffes als Monatsbin-To z. B. when using the laminate as a monthly binding

6; de ein Auseinanderklaffen an den Uändern zu vermeiden, nimmt die Punktdichte oder die Streifendichte des Klebers zwischen den Teillagen der Satiglage zum Rand des Schichtstoffes hin zu.6; de a divergence at the edges Avoid, the point density or the strip density of the adhesive between the sub-layers of the Satiglage decreases towards the edge of the laminate.

Schließlich ist die Erfindung auf ein Verfahren zur Herstellung des Schichtstorfes gerichtet. Sie geht dabei von einem Verfahren aus, bei dem die Sauglage, das Deckvlies und der Träger übereinandergeführt und miteinander verbunden werden.Finally, the invention is directed to a method for producing the layer peat. She goes with it from a process in which the absorbent layer, the cover fleece and the carrier are guided over one another and be connected to each other.

Erfindungsgemäß ist daher vorgesehen, daß zunächst das Deckvlies und der Träger jeweils mit einer Teillage und dann die freien Flächen der Teillagen mittels des Klebers miteinander verbunden werden.According to the invention it is therefore provided that initially the cover fleece and the carrier each with a partial layer and then the free areas of the sub-layers are connected to one another by means of the adhesive.

Diese Verf&hrensführung bietet den Vorteil, daß zunächst die beiden außenliegenden Verbünde der Sauglage aufgebaut werden können, z. B. durch Heißkalandrieren, und danach der Gesamtaufbau erstellt wird.This procedure offers the advantage that first the two external composites of the absorbent layer can be built up, for. B. by Hot calendering, and then the overall structure is created.

Ein Ausführungsbeispiel der Erfindung wird anhand der Figuren beschrieben. Es zeigtAn embodiment of the invention is described with reference to the figures. It shows

F: g. 1 einen Schnitt durch eine Ausführungsform des Schichtstoffes undQ: g. 1 shows a section through an embodiment of the Laminate and

Fig.2 eine Aufsicht auf den Schichtstoff gemäß Fig. 1.2 shows a plan view of the laminate according to Fig. 1.

Bei dem Schichtstoff gemäß F i g 1 besteht die aus Zeüuiosefasern gebildete Sauglage aus zwei Teillagen 1 und 2. Die Teillage 1 ist mit einem porösen öeckvlies 3 verbunden, während die Teillage 2 mit einem Kunststoffilm als hydrophobem Träger 4 verbunden ist. Der hydrophobe Träger 4 ist vorzugsweise ein Polyäthylenfilm. In the case of the laminate according to FIG. 1, the absorbent layer formed from cellulose fibers consists of two sub-layers 1 and 2. The partial layer 1 is covered with a porous non-woven fabric 3 connected, while the sub-layer 2 with a plastic film is connected as a hydrophobic carrier 4. The hydrophobic support 4 is preferably a polyethylene film.

Die beiden Teillagen 1 und 2 der Sauglage sind miteinander verformungsfrei durch einen Kleber 5 verbunden. Auf der Außenseite des hydrophoben Trägers 4 ist ein Klebestreifen 6 ausgebildet, der mit einem Schutz 7 in Form eines silikonierten Papiers abgedeckt istThe two sub-layers 1 and 2 of the absorbent layer are mutually deformation-free due to an adhesive 5 tied together. On the outside of the hydrophobic carrier 4, an adhesive strip 6 is formed, which with a protection 7 is covered in the form of a siliconized paper

Der Kleber 5 ist in Form von sich kreuzenden Linien 8 aufgebracht, die Rhomben 9 begrenzen. Als Kleber 5 wird ein Heißschmelzkleber eingesetzt.The adhesive 5 is in the form of intersecting lines 8 applied, the diamonds 9 limit. A hot melt adhesive is used as the adhesive 5.

Das Deckvlies 3 besteht aus Polyester- und Polypropylenfasern und die Verbindung mit der Sauglage 1, 2 wird nur durch erschmolzene Fasern des Deckvlieses 3 aufgebautThe cover fleece 3 consists of polyester and polypropylene fibers and the connection with the Absorbent layer 1, 2 is built up only by melted fibers of the cover fleece 3

Der hydrophobe Träger besteht vorzugsweise aus einem Polyäthylenfilm.The hydrophobic carrier is preferably made of a polyethylene film.

Die Teillagen 1 und 2 haben ein Flächengewicht von unter 100 g/m2 und das Deckvlies 3 aus Polyester- und Polypropylenfasern hat ein Flächengewicht von unter 10 g/m2. Für den Polyäthylenfilm 4 kommt ein Film mit ciner Dicke von unter 20 μπι zum Einsatz. Vorzugsweise haben die Teiliagen 1 und 2 ein Flächengewicht von 90-95 g/m2 und besitzt das Deckvlies 3 ein Fläclienge* wicht von 6-8 g/m2. Für den hydrophoben Träger 4 wird ein Polyäthylenfilm von vorzugsweise 15 μπι eingesetztThe partial layers 1 and 2 have a weight per unit area of less than 100 g / m 2 and the cover fleece 3 made of polyester and polypropylene fibers has a weight per unit area of less than 10 g / m 2 . For the polyethylene film 4, a film comes with cine r thickness of less than 20 μπι used. The sub-layers 1 and 2 preferably have a weight per unit area of 90-95 g / m 2 and the cover fleece 3 has a weight per unit area of 6-8 g / m 2 . For the hydrophobic carrier 4, a polyethylene film of preferably 15 μm is used

Beispiel A)Example a)

Auf ein^r Kardiermaschine wird ein Baumwollvhes von 92 g/m2 hergestellt. Dieses Baumwollvlies wird als Teillage 1 mit einer Mischung von Polypropylen- und Polyesterfasern im Verhältnis 1 :1 und einem Flächengewiejht von 8 g/m2 beschichtet Die beiden Schichten werden danach auf einem Kalander in einem Heißkalandrierverfahren miteinander verbunden. Das Laminat wird aufgerollt und ist bei späterem Einsatz des Schichtstoffes als Monatsbinde als die Seite vorgesehen, die an der Haut der Trägerin anliegtA cotton fabric of 92 g / m 2 is produced on a carding machine. This cotton fleece is coated as partial layer 1 with a mixture of polypropylene and polyester fibers in a ratio of 1: 1 and an area weight of 8 g / m 2. The two layers are then connected to one another on a calender in a hot calendering process. The laminate is rolled up and, if the laminate is used later as a sanitary napkin, it is intended to be the side that lies against the wearer's skin

Danach wird ein Vlies von 92 g/m2 als Teillage 2 in einem Heißkalandrierschritt mit einem 15 μπι dicken Polyäthylenfilm verbunden, der den hydrophoben Träger 4 darstellt Bei Verwendung des Schichtstoffes als Monatsbinde soll der Träger 4 an der Bekleidungsseite anliegen. Then a nonwoven of 92 g / m 2 as partial layer 2 is connected in a hot calendering step with a 15 μm thick polyethylene film, which represents the hydrophobic carrier 4. When the laminate is used as a sanitary napkin, the carrier 4 should lie against the clothing side.

Danach wird auf einer oder auf beiden Teillagen 1 und 2 der Kleber in punkt- oder linienförmiger Verteilung, insbesondere sinusförmigen Lini-.v<verteilang aufge-Dracht, wobei die Punktdiente oder div Sireirendichte des Klebers zwischen den Teillagen 1 und 2 der Sauglage zum Rande des Schichtstoffes hin zunimmtAfter that, the adhesive is applied to one or both of the partial layers 1 and 2 in a point or line distribution, especially sinusoidal lines, where the point service or div sire density of the adhesive between the sub-layers 1 and 2 of the absorbent layer increases towards the edge of the laminate

Anschließend werden die beiden vorgeformten Laminate miteinander verbunden. Danach wird auf der Außenseite des Trägers 4 die Klebeschicht 6 mit dem Schutzstreifen 7 aufgebrachtThe two preformed laminates are then bonded together. Then the The adhesive layer 6 with the protective strip 7 is applied to the outside of the carrier 4

Aus dem so erhaltenen Schichtstoff wird eine Monatsbinde mit einer Länge von L von 130 mm und einer Breite / von etwa 60 mm ausgestanzt (siefv Fig.2). Die Monatsbinde konnte durch folgende Parameter beschrieben werden:A sanitary napkin with a length of L of 130 mm and a width of about 60 mm is punched out of the laminate obtained in this way (see FIG. 2). The sanitary napkin could be described by the following parameters:

Bestandteilcomponent Gewichtweight Polyäthylen 15 μπιPolyethylene 15 μm 0.11g0.11g Baumwolle als Bestandteil der beidenCotton as part of the two VV Teillagen 1 und 2Partial layers 1 and 2 U9gU9g Vlies in Form von Polyäthylen undFleece in the form of polyethylene and PolypropylenfasernPolypropylene fibers 0,06 g0.06 g Klebestreifen 6Adhesive tape 6 0,12 g0.12 g Schutzstreifen in Form vonProtective strips in the form of silikoniertem Papiersiliconized paper 0,17 g0.17 g HeißschmelzkleberHot melt adhesive 0,10 g0.10 g

1,85 g1.85 g

Anstelle von Baumwolle kann für die beiden Teillagen 1 und 2 der Sauglage auch Watte oder ein modifiziertes Zellulosematerial eingesetzt werden, wie z. B. in der FR-PS 23 28 796 der Anmelderin beschrieben worden istInstead of cotton, cotton wool or a modified one can also be used for the two sub-layers 1 and 2 of the absorbent layer Cellulosic material are used, such as. B. has been described in FR-PS 23 28 796 of the applicant is

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (5)

Patentansprüche:Patent claims: \, Absorptionsfähiger Schichtstoff mit einer aus Zellulosefasern gebildeten Sauglage, einem porösen Deckvlies und einem KunststoffiJm als hydrophobem Träger, die miteinander jeweils flächig verbunden sind, dadurch gekennzeichnet, daß die Sauglage aus zwei Teillagen (1, 2) besteht, die miteinander verformungsfrei durch über die Berührfläche punkt- oder streifenförmig verteilten Kleber (5) verbunden sind, und daß das Deckvlies (3) aus Polyester- und Polypropylenfasern besteht und daß die Verbindung mit der Sauglage nur durch erschmolzene Fasern des Deckvlieses gebildet ist \, Absorbent laminate with an absorbent layer formed from cellulose fibers, a porous cover fleece and a KunststoffiJm as a hydrophobic carrier, which are each connected to each other flat, characterized in that the absorbent layer consists of two sub-layers (1, 2), which are deformed through the Contact surface point or strip-shaped distributed adhesive (5) are connected, and that the cover fleece (3) consists of polyester and polypropylene fibers and that the connection with the absorbent layer is only formed by melted fibers of the cover fleece 2. Schichtstoff nach Anspruch 1, dadurch gekennzeichnet, daß die Polyester- und die Polypropylenfasern in dem DecKvlies (3) in einem Gewichtsverhältnis von etwa 1 :1 vorliegen.2. Laminate according to claim 1, characterized in that the polyester and polypropylene fibers are present in the DecK fleece (3) in a weight ratio of about 1: 1. 3. Schichtstoff nach Anspruch 1 oder 2, dadurch gekennzeichnet daß die Verbindung des Deckvlieses (3) mit der Sauglage (1,2) längs sich kreuzender Linien (8) gebildet ist3. Laminate according to claim 1 or 2, characterized in that the connection of the cover fleece (3) with the absorbent layer (1,2) along intersecting one another Lines (8) is formed 4. Schichtstoff nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Punktdichte oder die Streifendichte des Klebers (5) zwischen den Teillagen (1, 2) der Saugbge zum Rand des Schichtstoffes hin zunimmt4. Laminate according to one of claims 1 to 3, characterized in that the point density or the stripe density of the adhesive (5) between the sub-layers (1, 2) of the Saugbge to the edge of the Laminate increases 5. Verfahren zur Herstellung des Schichtstoffes nach einem der Ansprüche 1 bis 4, bei dem die Sauglage, das Deckvlies und der Träger übereinandergeführt und miteinander verbunden werden, dadurch gekennzeichnet, daß zunächsi das Deckvlies und der Träger jeweils mit einer Teillage und dann die freien Rächen eier Tdllagsn mittels des Klebers miteinander verbunden werden.5. A method for producing the laminate according to any one of claims 1 to 4, in which the The absorbent layer, the cover fleece and the carrier are guided over one another and connected to one another, characterized in that the cover fleece and the carrier each with a partial layer and then the free revenge of eggs by means of the Adhesive are connected to each other.
DE2835822A 1977-09-20 1978-08-16 Absorbent Laminate and Process Expired DE2835822C3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7728259A FR2403186A1 (en) 1977-09-20 1977-09-20 LAMINATED STRUCTURES

Publications (3)

Publication Number Publication Date
DE2835822A1 DE2835822A1 (en) 1979-03-22
DE2835822B2 DE2835822B2 (en) 1981-07-23
DE2835822C3 true DE2835822C3 (en) 1982-03-04

Family

ID=9195557

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2835822A Expired DE2835822C3 (en) 1977-09-20 1978-08-16 Absorbent Laminate and Process

Country Status (7)

Country Link
BE (1) BE870057A (en)
DE (1) DE2835822C3 (en)
FR (1) FR2403186A1 (en)
GB (1) GB2004812B (en)
IE (1) IE47659B1 (en)
IT (2) IT1108046B (en)
NL (1) NL186558C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4573986A (en) * 1984-09-17 1986-03-04 The Procter & Gamble Company Disposable waste-containment garment
GR862226B (en) * 1985-09-02 1987-01-12 Colgate Palmolive Co Improved absorbent napkin particularly for infants diaper pads
DE19647458B4 (en) * 1996-11-16 2006-01-05 Nordenia Technologies Gmbh Sheets of two outer layers and one adhesive middle layer
US6706649B2 (en) 1999-02-01 2004-03-16 Nordenia Technologies Gmbh Web with two outer layers and an adhesive middle layer as well as process to produce said web
WO2007032027A1 (en) * 2005-09-18 2007-03-22 Shriram Institute For Industrial Research A process for producing a sanitary napkin

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3570491A (en) * 1970-02-16 1971-03-16 Vincent R Sneider Disposable sanitary pad
FR2200740A5 (en) * 1972-09-27 1974-04-19 Celphar Wuhrlin Labo Sanitary towel - with non-woven envelope and non-slip backing strip
US3881490A (en) * 1973-12-20 1975-05-06 Kimberly Clark Co Thin, flexible absorbent pads
PH12013A (en) * 1974-10-04 1978-10-06 Personal Products Co Sanitary napkin having improved attachment system

Also Published As

Publication number Publication date
IE781776L (en) 1979-03-20
DE2835822B2 (en) 1981-07-23
GB2004812B (en) 1982-03-03
GB2004812A (en) 1979-04-11
BE870057A (en) 1978-12-18
IT7853683V0 (en) 1978-09-05
IE47659B1 (en) 1984-05-16
FR2403186A1 (en) 1979-04-13
IT1108046B (en) 1985-12-02
NL7809511A (en) 1979-03-22
IT7869042A0 (en) 1978-09-05
NL186558B (en) 1990-08-01
NL186558C (en) 1991-01-02
DE2835822A1 (en) 1979-03-22
FR2403186B1 (en) 1981-03-20

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