Bonded polyolefin sheet

D - Textiles – Paper – 04 – H

Patent

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Details

D04H 1/54 (2006.01) D04H 3/14 (2006.01) D04H 3/16 (2006.01)

Patent

CA 2249569

A process is provided for producing a bonded nonwoven sheet from a lightly consolidated fibrous polyolefin sheet wherein the sheet is preheated on one or more preheating rolls, is bonded in one or more calendering nips, and is cooled on one or more cooling rolls. The process is used to make bonded polyolefin fibrous sheets that are smooth, are substantially impermeable to air and water, and are moisture vapor permeable.

Cette invention concerne un procédé de fabrication d'une feuille non tissée liée à partir d'une feuille de polyoléfine fibreuse légèrement consolidée, ledit procédé consistant à préchauffer ladite feuille sur un ou plusieurs cylindres de préchauffage, à la lier dans un ou plusieurs cylindres assouplisseurs de calandrage, puis à la refroidir sur un ou plusieurs cylindres de refroidissement. Ce procédé sert à fabriquer des feuilles fibreuses de polyoléfine liées à l'aspect lisse, sensiblement imperméables à l'air et à l'eau, et perméables à la vapeur.

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