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1. (CA2268431) BREATHABLE ELASTIC POLYMERIC FILM LAMINATES

Office : Canada
Application Number: 2268431 Application Date: 09.10.1997
Publication Number: 2268431 Publication Date: 16.04.1998
Grant Number: Grant Date: 04.01.2011
Publication Kind : C
Prior PCT appl.: Application Number:US1997018537 ; Publication Number: Click to see the data
IPC:
B29C 47/04
A61F 13/15
B26F 1/26
B32B 3/10
B32B 3/14
B32B 27/12
D03D 17/00
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
47
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
04
of multilayered or multicoloured articles
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
26
HAND CUTTING TOOLS; CUTTING; SEVERING
F
PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
1
Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
26
Perforating by non-mechanical means, e.g. by fluid jet
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
3
Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form
10
characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material
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
3
Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form
10
characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material
14
characterised by a face layer formed of separate pieces of material
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
27
Layered products essentially comprising synthetic resin
12
next to a fibrous or filamentary layer
D TEXTILES; PAPER
03
WEAVING
D
WOVEN FABRICS; METHODS OF WEAVING; LOOMS
17
Woven fabrics having elastic or stretch properties due to manner of weaving
Applicants: TREDEGAR INDUSTRIES, INC.
Inventors: PELKIE, JAMES E.
CURRO, JOHN JOSEPH
MANSFIELD, MICHELE ANN
DOBRIN, GEORGE CHRISTOPHER
Priority Data: 08/728,692 10.10.1996 US
08/729,629 10.10.1996 US
Title: (EN) BREATHABLE ELASTIC POLYMERIC FILM LAMINATES
(FR) LAMINE POLYMERE ELASTIQUE IMPER-RESPIRANT
Abstract: front page image
(EN) An elastomeric breathable three-dimensional composite laminate (18) and the process for producing the same are disclosed. A carrier material (10) is supplied onto a top surface of continuous portions of an elastomeric film (12) to form the composite material. A pressure differential is applied to a bottom surface of the film for a period of time sufficient for three-dimensional apertured structures (36) to be formed in the film.