METHOD FOR THE MANUFACTURING OF A LOW SHRINKAGE FLEXIBLE SHEET

World Intellectual Property Organization Patent

APP PUB NO WO-2011045325-A1
SERIAL NO

PCTEP2010065291

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Abstract

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The invention relates to a method for the manufacturing of a low shrinkage flexible sheet, said sheet comprising a fabric containing polyolefin fibers, said method comprising the steps of: a) depositing a molten plastomer layer on at least one surface of the woven fabric to form a sheet having a thickness approximately equal with the sum of the thicknesses of said molten plastomer layer and of said fabric; and b) impregnating said fabric with at least part of the molten plastomer layer by drawing the sheet into a gap between two calendaring rollers at a temperature of between the melting temperature of the plastomer and the melting temperature as determined by DSC of the polyolefin fibers, said gap having a width smaller than the thickness of the sheet; wherein the width of the gap is chosen to apply an impregnation pressure on the sheet of at least 20 bars.

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Patent Owner(s)

Patent OwnerAddress
DSM IP ASSETS BVNLHOLLAND SITTARD

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Inventor(s)

Inventor Name Address
MARISSEN ROELOF 6167 RD GELEEN
WIENKE DIETRICH NL-6100AA ECHT
WELZEN LEONARDUS JACOBUS JOHANNUS WILHELMUS STAAKIJZERSTRAAT 18 NL-6129 JC URMOND
JACOBS MARTINUS JOHANNES NICOLAAS NL-6416 EH HEERLEN

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