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1. (WO1998052505) AN ABSORBENT MULTILAYER MATERIAL AND A METHOD AND ARRANGEMENT FOR ITS MANUFACTURE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/052505 International Application No.: PCT/SE1998/000898
Publication Date: 26.11.1998 International Filing Date: 14.05.1998
Chapter 2 Demand Filed: 17.12.1998
IPC:
A61F 13/15 (2006.01) ,B29C 65/08 (2006.01) ,B32B 38/04 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
F
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
13
Bandages or dressings; Absorbent pads
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
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
65
Joining of preformed parts; Apparatus therefor
02
by heating, with or without pressure
08
using ultrasonic vibrations
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
38
Ancillary operations in connection with laminating processes
04
Punching, slitting or perforating
Applicants:
MÖLNLYCKE HEALTH CARE AB [SE/SE]; S-405 03 Göteborg, SE (AllExceptUS)
JOHANNISON, Ulf [SE/SE]; SE (UsOnly)
Inventors:
JOHANNISON, Ulf; SE
Agent:
HYLTNER, Jan-Olof ; AB Dahls Patentbyrå P.O. Box 606 S-182 16 Danderyd, SE
Priority Data:
9701869-120.05.1997SE
Title (EN) AN ABSORBENT MULTILAYER MATERIAL AND A METHOD AND ARRANGEMENT FOR ITS MANUFACTURE
(FR) MATERIAU MULTICOUCHE ABSORBANT, PROCEDE ET DISPOSITIF DE PRODUCTION DE CE MATERIAU
Abstract:
(EN) The present invention relates to an absorbent multilayer material (9) that includes a perforated layer (4') of hydrophobic material and at least one layer (5') of absorbent material. According to the invention, mutually sequential rows of depressions (13) are disposed over that side of the multilayer material (9) which includes the hydrophobic layer (4'), wherein the depressions have the form of hammock-like parts of the hydrophobic layer that penetrate down into the layer of absorbent material (5') so as to form openings (14) perpendicular to the plane of the hydrophobic layer, wherein the hammock-like parts are fastened to the absorbent layer over the major part of their respective surfaces, and the absorbent layer is compressed within the region of each depression. The invention also relates to a method and to an arrangement for producing such material.
(FR) L'invention concerne un matériau multicouche absorbant (9) comprenant une couche perforée (4') en matière hydrophobe et au moins une couche (5') en matière absorbante. Selon l'invention, des rangées de dépressions (13) successives sont placées sur la face du matériau multicouche (9) comprenant la couche hydrophobe (4'). Ces dépressions ont la forme d'éléments de type hamac de la couche hydrophobe, qui pénètrent dans le matériau absorbant (5') de telle manière que des ouvertures (14) soient formées perpendiculairement au plan de la couche hydrophobe. Ces éléments de type hamac sont, sur la majeure partie de leur surface respective, fixés à la couche absorbante qui est comprimée dans la zone de chaque dépression. L'invention concerne également un procédé et un dispositif permettant de produire un tel matériau.
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Designated States: CA, CN, JP, PL, RU, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: Swedish (SV)