Dimensionally stable nonwoven fibrous webs and methods of making and using the same

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United States of America Patent

PATENT NO 9487893
APP PUB NO 20120088424A1
SERIAL NO

13262400

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Abstract

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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. When the thermoplastic polyester is selected to include aliphatic and aromatic polyesters, a spunbond process may be used to produce substantially continuous fibers that exhibit molecular orientation. When the thermoplastic polyester is selected from aliphatic polyesters, a meltblown process may be used to produce discontinuous fibers that do not exhibit molecular orientation. 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.

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Patent Owner(s)

  • 3M INNOVATIVE PROPERTIES COMPANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berrigan, Michael R Oakdale, US 84 1886
Fennessey, Sian F Wettingen, CH 8 190
Jennen, Jay M Forest Lake, US 44 510
Karls, Korey W Woodbury, US 15 147
Landgrebe, Kevin D Woodbury, US 41 651
Moore, Eric M Roseville, US 32 695
Porbeni, Francis E Woodbury, US 18 394
Scholz, Matthew T Woodbury, US 240 8928
Stelter, John D Hudson, US 35 872

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