LIQUID REPELLENT NONWOVEN PROTECTIVE MATERIAL

WIPO Patent Application WO2004003292

A3

The present invention provides a liquid repellent nonwoven protective material comprising a meltspun microfiber layer and one or more additional nonwoven layers bonded to the meltspun microfiber layer. The meltspun microfiber layer comprises a high melt flow rate olefin polymer (i.e., having a melt flow rate of at least 1500 grams per 10 minutes as measured by ASTM-D-1238-01 at 177 DEG C), a melt flow modifying agent and a liquid repellency internal additive. The high melt flow rate olefin polymer is substantially prodegradant-free and is present in amounts from about 78 percent by weight to about 94.9 percent by weight. The liquid repellency internal additive, such as a fluorochemical or fluoropolymer, is present in amounts from about 0.1 percent by weight to about 2 percent by weight, and the melt flow modifying agent, such as polymers and copolymers of butene, is present in amounts from about 5 percent by weight to about 20 percent by weight. The invention provides protective fabrics and garments such as medical products such as surgical drapes and gowns, and protective workwear garments from the liquid repellent nonwoven protective material. The invention additionally provides a process for making the nonwoven protective material.

FITTING STEVEN WAYNE
POWERS MICHAEL DAVID

PCT/US2003/011751

April 01, 2004

April 15, 2003

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KIMBERLY CLARK CO (US)

A61F13/15; A61L15/52; B32B5/26; D04H5/08; D04H13/00; (IPC1-7): D04H13/00; D04H5/08; D01F6/46; D01F1/10; B32B5/26

WO1996006966A1	1996-03-07
WO2002009491A2	2002-02-07
WO1997040225A1	1997-10-30

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US5688157A	1997-11-18
US5830810A	1998-11-03
US5652051A	1997-07-29
US5879341A	1999-03-09
US6040255A	2000-03-21
US5939341A	1999-08-17
US5073436A	1991-12-17

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