E.i. Dupont De Nemours and Company

Rudolph F Janis

Hyunkook Shin

Sam Louis Samuels

Edgar N Rudisill

George Vassilatos

Michael Allen Bryner

Stephen B Johnson

David Jackson McGinty

James Ross Waggoner

H Vaughn Samuelson

Hans Rudolf Frankfort

Fibers flash-spun from blends of polyolefin polymers

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.

Method of making fibrous, bonded polyolefin sheet

This invention relates to a new nonwoven material which has very high Frazier permeability while having substantial hydrostatic head liquid barrier properties. The material is comprised of fibers which are approximately one denier and finer fibers which have sufficient strength properties so as not to need a support scrim. The fabric is quite comfortable because of its breathability, quite soft because of its construction, and protective from liquids from rain to hazardous chemicals.

Low or sub-denier nonwoven fibrous structures

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Richmond, VA, United States of America

Rudolph F Janis