The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 2016
Filed:
Oct. 12, 2010
Dietrich Wienke, Elsloo, NL;
Roelof Marissen, Born, NL;
Martinus Johannes Nicolaas Jacobs, Heerlen, NL;
Leonardus Jacobus Johannes Wilhelmus Welzen, Urmond, NL;
Dietrich Wienke, Elsloo, NL;
Roelof Marissen, Born, NL;
Martinus Johannes Nicolaas Jacobs, Heerlen, NL;
Leonardus Jacobus Johannes Wilhelmus Welzen, Urmond, NL;
DSM IP ASSETS B.V., Heerlen, NL;
Abstract
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.