MICROPOROUS FILM CONTAINING WATER SWELLABLE FILLERS

A self-regulating breathable microporous film layer transmits water vapor at normal use conditions, and reduces or eliminates the vapor transmission when the vapor in the environment become excessive. The film layer includes a voided polymer matrix and a plurality of fine water-swellable filler part...

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Hauptverfasser: SCHULTZ, JAY, SHELDON, STRACK, DAVID, CRAIGE, MCCORMACK, ANN, LOUISE, CARTWRIGHT, WILLIAM, F, BLANEY, CAROL, A
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creator SCHULTZ, JAY, SHELDON
STRACK, DAVID, CRAIGE
MCCORMACK, ANN, LOUISE
CARTWRIGHT, WILLIAM, F
BLANEY, CAROL, A
description A self-regulating breathable microporous film layer transmits water vapor at normal use conditions, and reduces or eliminates the vapor transmission when the vapor in the environment become excessive. The film layer includes a voided polymer matrix and a plurality of fine water-swellable filler particles disposed within the voids. When there is an excess of vapor, the filler particles swell to block or partially block transmission of vapor through the voids and the film layer. L'invention porte sur une couche de film microporeux imper-respirant, à auto-régulation qui transmet la vapeur d'eau dans des conditions normales d'utilisation, et réduit ou élimine la transmission de vapeur lorsque celle-ci devient trop importante dans l'environnement. La couche de film comprend une matrice polymère creuse et une pluralité de fines particules hydrogonflantes constituant une charge, ces particules étant disposées dans les creux. Lorsqu'il y a un excès de vapeur, les particules de la charge gonflent de façon à bloquer totalement ou partiellement la transmission de vapeur dans les creux et dans la couche de film.
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The film layer includes a voided polymer matrix and a plurality of fine water-swellable filler particles disposed within the voids. When there is an excess of vapor, the filler particles swell to block or partially block transmission of vapor through the voids and the film layer. L'invention porte sur une couche de film microporeux imper-respirant, à auto-régulation qui transmet la vapeur d'eau dans des conditions normales d'utilisation, et réduit ou élimine la transmission de vapeur lorsque celle-ci devient trop importante dans l'environnement. La couche de film comprend une matrice polymère creuse et une pluralité de fines particules hydrogonflantes constituant une charge, ces particules étant disposées dans les creux. Lorsqu'il y a un excès de vapeur, les particules de la charge gonflent de façon à bloquer totalement ou partiellement la transmission de vapeur dans les creux et dans la couche de film.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
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language eng ; fre
recordid cdi_epo_espacenet_WO9923140B1
source esp@cenet
subjects ACCESSORIES
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
BANDAGES, DRESSINGS OR ABSORBENT PADS
CHEMISTRY
COMPOSITIONS BASED THEREON
DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS
FILTERS IMPLANTABLE INTO BLOOD VESSELS
FIRST-AID KITS
FOMENTATION
GENERAL PROCESSES OF COMPOUNDING
HUMAN NECESSITIES
HYGIENE
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES
OUTERWEAR
PERFORMING OPERATIONS
PROSTHESES
PROTECTIVE GARMENTS
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
TREATMENT OR PROTECTION OF EYES OR EARS
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
WEARING APPAREL
WORKING-UP
title MICROPOROUS FILM CONTAINING WATER SWELLABLE FILLERS
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