The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2015
Filed:
Feb. 16, 2011
Francis E. Porbeni, Woodbury, MN (US);
Chetan P. Jariwala, Woodbury, MN (US);
Mahfuza B. Ali, Mendota Heights, MN (US);
Matthew T. Scholz, Woodbury, MN (US);
Francis E. Porbeni, Woodbury, MN (US);
Chetan P. Jariwala, Woodbury, MN (US);
Mahfuza B. Ali, Mendota Heights, MN (US);
Matthew T. Scholz, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
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.