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DE2835822A1 - LAYER STRUCTURE AND METHOD OF MANUFACTURING IT - Google Patents

LAYER STRUCTURE AND METHOD OF MANUFACTURING IT

Info

Publication number
DE2835822A1
DE2835822A1 DE19782835822 DE2835822A DE2835822A1 DE 2835822 A1 DE2835822 A1 DE 2835822A1 DE 19782835822 DE19782835822 DE 19782835822 DE 2835822 A DE2835822 A DE 2835822A DE 2835822 A1 DE2835822 A1 DE 2835822A1
Authority
DE
Germany
Prior art keywords
layer structure
structure according
fibers
fleece
layer
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.)
Granted
Application number
DE19782835822
Other languages
German (de)
Other versions
DE2835822B2 (en
DE2835822C3 (en
Inventor
Marcel Holvoet
Paul 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, e.g. with flaps
    • 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
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • 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 of the pads
    • 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
    • A61F13/58—Adhesive tab fastener elements
    • A61F2013/582—Adhesive tab fastener elements with one strip on one place
    • 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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    • B32B2262/0253—Polyolefin 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
    • B32B2262/02—Synthetic macromolecular fibres
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    • 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
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • 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
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B32B2262/067—Wood fibres
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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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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
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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
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • 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 eine als Verbandmaterial oder als Slip-Schutzeinlage verwendbare Schichtstruktur sowie ein Verfahren zu ihrer Herstellung.The invention relates to a layer structure that can be used as a bandage material or as a protective slip insert and to a method for its production.

Zusätzlich zu den herkömmlichen Monatsbinden sind kürzlich absorptionsfähige Strukturen auf dem Markt erschienen mit "Slip-Schutzeinlagen" bezeichnet, die aus einer trocken defibrierten Papiermasse (d´une masse de pate á papier défibrée á sec) zwischen einer undurchlässigen Folie (auf der Seite der Bekleidung) und einem flüssigkeitsdurchlässigen nicht gewebtem Material (auf der Hautseite) bestehen. Leider reicht das Absorptionsvermögen dieser Slip-Schutzeinlagen nicht aus und u.a. sind sie im Tragen nicht sehr angenehm.In addition to the conventional sanitary napkins, absorbent structures have recently appeared on the market with "slip protectors", which are made of a dry defibrated paper pulp (d´une masse de pate á papier défibrée á sec) between an impermeable film (on the side of the clothing ) and a liquid-permeable non-woven material (on the skin side). Unfortunately, the absorption capacity of these protective panties is insufficient and, among other things, they are not very comfortable to wear.

Dennoch ist das Bedürfnis nach einer Schutzeinlage für die Zeit zwischen den Menstruationsperioden oder aber vor und nach den Perioden bei vielen Frauen sehr groß.Nevertheless, the need for a protective insert for the time between the menstrual periods or before and after the periods is very great for many women.

Es ist nicht erforderlich, dass das Absorptionsvermögen einer Slip-Schutzeinlage so groß ist wie das einer Monatsbinde, aber sie muß einen wirksamen Schutz gewährleisten, unauffällig sein und die Seite der Einlage, die mit der Haut in Kontakt kommt, muß auch so weich wie möglich sein.It is not necessary that the absorbent capacity of a protective slip pad is as high as that of a sanitary napkin, but it must provide effective protection, be inconspicuous and the side of the pad that comes into contact with the skin must also be as soft as possible be.

Der Erfindung liegt die Aufgabe zugrunde, eine Schichtstruktur zu schaffen, die diese Forderungen erfüllt. Sie soll als Slip-Schutzeinlage ausreichenden Schutz bieten und angenehm im Tragen sein. Ferner soll ein Verfahren zur Herstellung einer solchenThe invention is based on the object of creating a layer structure which meets these requirements. As a protective slip insert, it should offer adequate protection and be comfortable to wear. Furthermore, a method for producing such

Schichtstruktur geschaffen werden.Layer structure are created.

Die Aufgabe wird gelöst durch eine Schichtstruktur aus mindestens einer oberen Lage aus im wesentlichen Zellulosefasern und einer unteren Lage auf Basis von Zellulosefasern, deren Außenseite hydrophob ist.The object is achieved by a layer structure composed of at least one upper layer consisting essentially of cellulose fibers and a lower layer based on cellulose fibers, the outside of which is hydrophobic.

Nach einer bevorzugten Ausführungsform der Erfindung wird die obere Lage von einem Zellulosefaservlies - gekrempelte Baumwollfasern oder Fasern, die von einer trocken defibrierten Papiermasse stammen - und einem Flor aus thermoplastischen Fasern, den man durch heißes Aufkalandrieren mit dem Zellulosefaservlies verbunden hat, gebildet. Die untere Lage besteht ebenfalls aus einem Zellulosefaservlies (gekrempelte Baumwollfasern, Fasern, die von einer trocken defibrierten Papiermasse stammen), auf dessen Außenseite ein Polyethylenfilm durch Wärmeeinwirkung (z.B. Heißverschweißen) aufgebracht ist.According to a preferred embodiment of the invention, the upper layer is formed from a cellulose fiber fleece - carded cotton fibers or fibers originating from a dry defibrated paper pulp - and a pile of thermoplastic fibers which has been bonded to the cellulose fiber fleece by hot calendering. The lower layer also consists of a cellulose fiber fleece (carded cotton fibers, fibers that come from a dry defibrated paper pulp), on the outside of which a polyethylene film is applied by the action of heat (e.g. heat welding).

Die thermoplastischen Fasern sind Polypropylenfasern und Polyesterfasern, eingesetzt in einem Gewichtsverhältnis von etwa eins.The thermoplastic fibers are polypropylene fibers and polyester fibers used in a weight ratio of about one.

Man hat schon vorgeschlagen, gekrempelte Baumwollfasern und Polyolefinfasern zu kombinieren. So ist in der FR-PS 1 576 126 die Verbindung eines Vlieses aus gekrempelten Baumwollfasern eines Flächengewichtes von 75 g/m[hoch]3 und eines Vlieses aus Polypropylenfasern mit einem Flächengewicht von 25 g/m[hoch]2 offenbart. Nach Zusammenschnüren (aiguilletage) wird der Verbund bei 150°C kalandriert. Das erhaltene Produkt, dessen absorbierender Teil alsIt has already been proposed to combine carded cotton fibers and polyolefin fibers. FR-PS 1 576 126 discloses the connection of a fleece made of carded cotton fibers with a basis weight of 75 g / m [high] 3 and a fleece made of polypropylene fibers with a basis weight of 25 g / m [high] 2. After tying up (aiguilletage), the composite is calendered at 150 ° C. The product obtained, the absorbent part of which as

Verbandmaterial geeignet ist, kann mit einer Schutzschicht überzogen sein. In dieser Patentschrift sind die überraschenden Vorteile, die man durch Verbinden von zwei Faservliesen, von denen das eine mit einem Flor von thermoplastischen Fasern und das andere mit einem durchgehenden Polyethylenfilm versehen ist, erhält, überhaupt nicht angedeutet.Dressing material is suitable, can be covered with a protective layer. In this patent the surprising advantages which are obtained by joining two nonwovens, one of which is provided with a pile of thermoplastic fibers and the other with a continuous polyethylene film, are not indicated at all.

Die Verwendung von zwei Lagen absorbierenden Materials, getrennt durch eine hydrophile Diffusionsfolie und versehen mit Schichten von Paraffin-Hydrophoben, wobei das Gefüge mit einer undurchlässigen Folie verbunden und vollständig von einem nichtgewebtem Material umgeben ist, ist in der FR-PS 2 200 740 beschrieben. Es handelt sich hierbei um eine Monatsbinde, die von der erfindungsgemäßen Schichtstruktur völlig verschieden ist. Tatsächlich lässt die beschriebene Monatsbinde einen Fachmann nicht die Vorteile vermuten, die durch Verkleben der Lagen aus absorbierendem Material erhalten werden, wenn man gleichzeitig die unterteilende Innenfolie und das die ganze Struktur umgebende nichtgewebte Material weglässt.The use of two layers of absorbent material, separated by a hydrophilic diffusion film and provided with layers of paraffin hydrophobes, the structure being connected with an impermeable film and completely surrounded by a non-woven material, is described in FR-PS 2 200 740. It is a sanitary napkin that is completely different from the layer structure according to the invention. Indeed, the sanitary napkin described does not suggest to a person skilled in the art the advantages obtained by gluing together the layers of absorbent material while at the same time omitting the dividing inner sheet and the non-woven material surrounding the whole structure.

Die Erfindung wird nun anhand der beigefügten Figuren und dem Beispiel noch näher beschrieben. Es zeigen:The invention will now be described in more detail with reference to the accompanying figures and the example. Show it:

Fig. 1 ein Schnittbild undFig. 1 is a sectional view and

Fig. 2 eine Draufsicht auf eine bevorzugte Ausführungsform der Erfindung.Fig. 2 is a plan view of a preferred embodiment of the invention.

Die Lage 1 aus Zellulosefaser ist mit einem Flor 3 aus thermopla- stischen Fasern überzogen. Das Ganze ist entlang den durchgehenden Schnittlinien 8, die z.B. Rhomben 9 begrenzen, durch Hindurchführen durch einen beheizten Kalander heißverschmolzen.The layer 1 made of cellulose fiber is covered with a pile 3 made of thermoplastic elastic fibers covered. The whole is hot-melted along the continuous cutting lines 8, which delimit rhombuses 9, for example, by being passed through a heated calender.

Die Lage 2, vorzugsweise ein Zellulosefaservlies, ist mittels Wärme mit einem Polyethylenfilm 4 vereinigt.The layer 2, preferably a cellulose fiber fleece, is combined with a polyethylene film 4 by means of heat.

Auf der Außenseite des Filmes 4 bringt man mindestens einen Klebstreifen 6 auf, den man mittels eines silikonierten Papiers 7 schützend abdeckt.At least one adhesive strip 6 is applied to the outside of the film 4 and is covered in a protective manner by means of siliconized paper 7.

Die Lagen 1 und 2 sind mittels Punkten oder Linien aus Klebstoff 5 (Heißschmelzkleber) miteinander verbunden.The layers 1 and 2 are connected to one another by means of points or lines made of adhesive 5 (hot melt adhesive).

Vorzugsweise haben die Baumwollfaservliese ein Gewicht von unter 100g/m[hoch]2, wenn möglich zwischen 90 und 95 g/m[hoch]2.The cotton fiber fleeces preferably have a weight of less than 100 g / m [high] 2, if possible between 90 and 95 g / m [high] 2.

Der Flor aus thermoplastischen Fasern ist nicht schwerer als 10 g/m[hoch]2 und nach einer bevorzugten Ausführungsform der Erfindung hat er ein Gewicht von 6 bis 8 g/m[hoch]2.The pile made of thermoplastic fibers is not heavier than 10 g / m [high] 2 and according to a preferred embodiment of the invention it has a weight of 6 to 8 g / m [high] 2.

Der Polyethylenfilm hat vorzugsweise eine Dicke unter 20 Mikron.The polyethylene film is preferably less than 20 microns thick.

Beispiel a)Example a)

Auf einer Kardiermaschine S.A.C.M. wurde ein 92 g/m[hoch]2 Baumwollvlies hergestellt. Nach Durchlauf durch eine Aufbereitungsmaschine (étaleur BLAMIRE) wurde das Vlies in eine RANDO-WEBER-Maschine gebracht, auf der 8 g/m[hoch]2 eines Gemisches von Polypropylen- undOn a carding machine S.A.C.M. a 92 g / m [high] 2 cotton fleece was produced. After passing through a processing machine (étaleur BLAMIRE), the fleece was placed in a RANDO-WEBER machine on which 8 g / m 2 of a mixture of polypropylene and

Polyester-Fasern, 50/50, niedergeschlagen wurden. Die beiden Lagen wurden durch Heißverschmelzen auf einem Kalander miteinander verbunden. Der erhaltene Verbund wurde gestanzt und aufgerollt. Dieses Vlies ist für die "Haut"-Seite bestimmt.Polyester fibers, 50/50, were precipitated. The two layers were joined together by hot fusing on a calender. The composite obtained was punched and rolled up. This fleece is intended for the "skin" side.

b) Auf einem beheizten Kalander wurde ein Baumwollfaservlies von 92 g/m[hoch]2 und ein 15 Mikron dicker Polyethylenfilm miteinander vereinigt. Dieses Vlies ist für die "Bekleidungsseite" bestimmt.b) A cotton fiber fleece of 92 g / m [high] 2 and a 15 micron thick polyethylene film were combined with one another on a heated calender. This fleece is intended for the "clothing side".

c) Man brachte einen Klebstoff vorzugsweise einen Heißschmelzkleber) in Form von Punkten und/oder sinusförmigen Linien auf, die sich an den Rändern des Produkts am stärksten nähern, um ein Auseinanderklaffen zu vermeiden.c) An adhesive (preferably a hot-melt adhesive) was applied in the form of dots and / or sinusoidal lines that come closest to each other at the edges of the product in order to avoid gaps.

d) Man vereinigte die beiden vorgeformten Verbunde miteinander und auf der Seite des Polyethylenfilms brachte man ein Klebeband an, dass man mit einem Schutzpapier (silikoniertes Papier) abdeckte.d) The two preformed composites were combined with one another and an adhesive tape was attached to the side of the polyethylene film that was covered with a protective paper (siliconized paper).

e) Aus der so erhaltenen Schichtstruktur stanzte man ein Produkt einer Länge L von ca. 130 mm und einer Breite I von ca. 60 mm aus. Die Charakteristiken des Produkts waren die folgenden:e) A product with a length L of approx. 130 mm and a width I of approx. 60 mm was punched out of the layer structure thus obtained. The characteristics of the product were as follows:

Bestandteil GewichtComponent weight

Polyethylen, 15 Mikron 0,11 gPolyethylene, 15 microns 0.11 g

Baumwolle 1,29 gCotton 1.29 g

Fasern (PE + PP) 0,06 gFibers (PE + PP) 0.06 g

Klebeband 0,12 gTape 0.12 g

Silikoniertes Papier 0,17 gSiliconized paper 0.17 g

Heißschmelzkleber 0,10 gHot melt glue 0.10 g

____________

1,85 g1.85 g

An der vorstehend beschriebenen Erfindung sind zahlreiche Varianten möglich. So können die Baumwollvliese durch verstärkte Watteschichten oder durch absorbierende Folien, erhalten aus modifizierten Zellulosefasern z.B. gemäß der FR-PS 2 328 796 der Anmelderin, ersetzt werden.Numerous variants of the invention described above are possible. For example, the cotton fleeces can be replaced by reinforced layers of cotton wool or by absorbent foils obtained from modified cellulose fibers, e.g. according to FR-PS 2 328 796 of the applicant.

Die thermoplastischen Faservliese können ebenfalls durch einen Flor, erhalten durch Abscheidung und thermische Festlegung von Polyesterfasern auf einer durchbrochenen Struktur des Typs, wie in der FR-PS 2 195 555 der Anmelderin offenbart, ausgetauscht werden.The thermoplastic nonwovens can also be replaced by a pile obtained by depositing and thermally fixing polyester fibers on an openwork structure of the type disclosed in the applicant's FR-PS 2 195 555.

Claims (15)

1. Schichtstruktur, gekennzeichnet durch mindestens eine obere Lage (1) aus im wesentlichen Zellulosefasern und einer unteren Lage (2) auf Basis von Zellulosefasern, deren Außenseite (4) hydrophob ist.1. Layer structure, characterized by at least one upper layer (1) consisting essentially of cellulose fibers and a lower layer (2) based on cellulose fibers, the outside (4) of which is hydrophobic. 2. Schichtstruktur nach Anspruch 1, dadurch gekennzeichnet, dass die obere Lage (1) ein mit einem Flor (3) aus thermoplastischen Fasern überzogenes Zellulosefaservlies ist.2. Layer structure according to claim 1, characterized in that the upper layer (1) is a cellulose fiber fleece coated with a pile (3) made of thermoplastic fibers. 3. Schichtstruktur nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Zellulosefaservlies (1) ein durch Krempeln von Baumwollfasern erhaltenes Vlies ist.3. Layer structure according to claim 1 or 2, characterized in that the cellulose fiber fleece (1) is a fleece obtained by carding cotton fibers. 4. Schichtstruktur nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das Zellulosefaservlies (1) ein durch trockenes Defibrieren von Papiermasse erhaltenes Vlies ist.4. Layer structure according to one of claims 1 or 2, characterized characterized in that the cellulose fiber fleece (1) is a fleece obtained by dry defibrating paper pulp. 5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die thermoplastischen Fasern des Flors (3) ein Gemisch aus Polypropylen- und Polyester-Fasern ist.5. The method according to any one of claims 1 to 4, characterized in that the thermoplastic fibers of the pile (3) is a mixture of polypropylene and polyester fibers. 6. Schichtstruktur nach Anspruch 5, dadurch gekennzeichnet, dass die Polypropylen- und Polyester-Fasern in einem Gewichtsverhältnis von etwa eins zueinander vorliegen.6. Layer structure according to claim 5, characterized in that the polypropylene and polyester fibers are present in a weight ratio of approximately one to one another. 7. Schichtstruktur nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die untere Lage (2) durch einen mittels Wärme aufgebrachten kontinuierlichen Polyethylenfilm (4) hydrophob ist.7. Layer structure according to one of the preceding claims, characterized in that the lower layer (2) is hydrophobic by means of a continuous polyethylene film (4) applied by means of heat. 8. Schichtstruktur nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die untere Lage (2) ein durch Krempeln von Baumwollfasern erhaltenes Vlies ist.8. Layer structure according to one of claims 1 to 7, characterized in that the lower layer (2) is a fleece obtained by carding cotton fibers. 9. Schichtstruktur nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die untere Lage (2) ein durch trockenes Defibrieren von Papiermasse erhaltenes Vlies ist.9. Layer structure according to one of claims 1 to 7, characterized in that the lower layer (2) is a fleece obtained by dry defibrating paper pulp. 10. Schichtstruktur nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die obere (1) und die untere Lage (2) durch einen Kleber (5) in Form von Punkten oder Streifen miteinander verbunden sind.10. Layer structure according to one of claims 1 to 9, characterized in that the upper (1) and the lower layer (2) are connected to one another by an adhesive (5) in the form of points or strips. 11. Schichtstruktur nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Zellulosefaservliese (1, 2) ein Gewicht unter 100 g/m[hoch]2 haben.11. Layer structure according to one of claims 1 to 10, characterized in that the cellulose fiber webs (1, 2) have a weight of less than 100 g / m [high] 2. 12. Schichtstruktur nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der Flor (3) aus thermoplastischen Fasern ein Gewicht unter 10 g/m[hoch]2 hat.12. Layer structure according to one of claims 1 to 11, characterized in that the pile (3) made of thermoplastic fibers has a weight of less than 10 g / m [high] 2. 13. Schichtstruktur nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass der Polyethylenfilm (4) eine Dicke von unter 20 Mikron hat.13. Layer structure according to one of claims 1 to 12, characterized in that the polyethylene film (4) has a thickness of less than 20 microns. 14. Schichtstruktur nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass die Zellulosefaservliese (1, 2) ein Gewicht von 90-95 g/m[hoch]2 haben und mit Hilfe eines Heißschmelzklebers (5), von dem das meiste möglichst in Randnähe aufgebracht ist miteinander verbunden sind; die obere Lage (1) mit dem Flor (3) aus Polypropylen- und Polyester-Fasern eines Gewichtes von 6-8 g/m[hoch]2 durch Wärmeeinwirkung miteinander verbunden worden sind; und die untere Lage (2) mit dem durchgehenden Polyethylenfilm (4) einer Dicke von 15 Mikron durch Wärmeeinwirkung miteinander verbunden worden sind und die Außenseite des Polyethylenfilms (4) mindestens ein schmales Klebeband (8) trägt, das mit einem silikonierten Papier (7) abgedeckt ist.14. Layer structure according to one of claims 1 to 13, characterized in that the cellulose fiber webs (1, 2) have a weight of 90-95 g / m [high] 2 and with the help of a hot melt adhesive (5), most of which is possible applied near the edge are connected to each other; the upper layer (1) with the pile (3) made of polypropylene and polyester fibers weighing 6-8 g / m [high] 2 have been connected to one another by the action of heat; and the lower layer (2) with the continuous polyethylene film (4) having a thickness of 15 microns have been bonded to one another by the action of heat and the outside of the polyethylene film (4) has at least one narrow adhesive tape (8) covered with a siliconized paper (7) is covered. 15. Verfahren zur Herstellung der Schichtstruktur nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass man a) ein Zellulosefaservlies und ein Vlies aus thermoplastischen Fasern durch Heißkalandrieren miteinander vereinigt;15. A method for producing the layer structure according to any one of claims 1 to 14, characterized in that one a) a cellulose fiber fleece and a fleece made of thermoplastic fibers are combined with one another by hot calendering; b) ein Zellulosefaservlies und einen Polyethylenfilm durch Heißkalandrieren miteinander vereinigt;b) a cellulose fiber fleece and a polyethylene film are combined with one another by hot calendering; c) die in den Stufen a) und b) erhaltenen Verbunde mittels punkt- oder streifenförmig aufgebrachtem Kleber miteinander verbindet;c) connects the composites obtained in stages a) and b) to one another by means of adhesive applied in dots or strips; d) auf dem Polyethylenfilm ein Klebeband anbringt und es mit einem Schutzpapier abdeckt undd) attaching an adhesive tape to the polyethylene film and covering it with a protective paper and c) aus der erhaltenen Struktur die gewünschte Größe ausstanzt.c) punching out the desired size from the structure obtained.
DE2835822A 1977-09-20 1978-08-16 Absorbent Laminate and Process Expired DE2835822C3 (en)

Applications Claiming Priority (1)

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FR7728259A FR2403186A1 (en) 1977-09-20 1977-09-20 LAMINATED STRUCTURES

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

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DE (1) DE2835822C3 (en)
FR (1) FR2403186A1 (en)
GB (1) GB2004812B (en)
IE (1) IE47659B1 (en)
IT (2) IT7853683V0 (en)
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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

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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
WO2007032027A1 (en) * 2005-09-18 2007-03-22 Shriram Institute For Industrial Research A process for producing a sanitary napkin

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DE2107426A1 (en) * 1970-02-16 1971-10-21 Sneider, Vincent Raymond, Atlanta. Ga. (V.St.A.) Sanitary insert or pad for underwear for single use
FR2200740A5 (en) * 1972-09-27 1974-04-19 Celphar Wuhrlin Labo Sanitary towel - with non-woven envelope and non-slip backing strip
DE2460712A1 (en) * 1973-12-20 1975-06-26 Kimberly Clark Co ABSORBENT TEMPLATE

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DE2107426A1 (en) * 1970-02-16 1971-10-21 Sneider, Vincent Raymond, Atlanta. Ga. (V.St.A.) Sanitary insert or pad for underwear for single use
FR2200740A5 (en) * 1972-09-27 1974-04-19 Celphar Wuhrlin Labo Sanitary towel - with non-woven envelope and non-slip backing strip
DE2460712A1 (en) * 1973-12-20 1975-06-26 Kimberly Clark Co ABSORBENT TEMPLATE

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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
US6814821B2 (en) * 1999-02-01 2004-11-09 Nordenia Technologies Gmbh Web with two outer layers and an adhesive middle layer as well as process to produce said web

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IT7869042A0 (en) 1978-09-05
FR2403186A1 (en) 1979-04-13
NL186558B (en) 1990-08-01
IT1108046B (en) 1985-12-02
NL186558C (en) 1991-01-02
GB2004812A (en) 1979-04-11
DE2835822B2 (en) 1981-07-23
BE870057A (en) 1978-12-18
IE781776L (en) 1979-03-20
IT7853683V0 (en) 1978-09-05
FR2403186B1 (en) 1981-03-20
DE2835822C3 (en) 1982-03-04
NL7809511A (en) 1979-03-22
IE47659B1 (en) 1984-05-16
GB2004812B (en) 1982-03-03

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