DIMENSIONALLY STABLE NONWOVEN FIBROUS WEBS AND METHODS OF MAKING AND USING THE SAME

Title:

DIMENSIONALLY STABLE NONWOVEN FIBROUS WEBS AND METHODS OF MAKING AND USING THE SAME

Document Type and Number:

WIPO Patent Application WO/2011/106205

Kind Code:

A3

Abstract:

Dimensionally stable nonwoven fibrous webs include a multiplicity of continuous fibers formed from one or more thermoplastic polyesters and polypropylene in an amount greater than 0% and no more than 10% by weight of the web. The webs have at least one dimension which decreases by no greater than 10% in the plane of the web when heated to a temperature above a glass transition temperature of the fibers. A spunbond process may be used to produce substantially continuous fibers that exhibit molecular orientation. A meltblown process may be used to produce discontinuous fibers that do not exhibit molecular orientation. Antishrinkage and antistatic additives are also added to the fibrous webs. The webs may be used as articles for filtration, sound absorption, thermal insulation, surface cleaning, cellular growth support, drug delivery, personal hygiene, medical apparel, or wound dressing.

Inventors:

PORBENI FRANCIS E (US)
JARIWALA CHETAN P (US)
ALI MAHFUZA B (US)
SCHOLZ MATTHEW T (US)

Application Number:

PCT/US2011/024950

Publication Date:

January 05, 2012

Filing Date:

February 16, 2011

Export Citation:

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Assignee:

3M INNOVATIVE PROPERTIES CO (US)
PORBENI FRANCIS E (US)
JARIWALA CHETAN P (US)
ALI MAHFUZA B (US)
SCHOLZ MATTHEW T (US)

International Classes:

D04H1/42; D04H1/56; D04H3/16; D06M15/00

Foreign References:

US20090311937A1	2009-12-17
US20090203281A1	2009-08-13
US5525409A	1996-06-11
US5525706A	1996-06-11

Other References: