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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.:

US 12466169 B1

PDFFull Text
Date of Patent:
Nov. 11, 2025

Filed:

Nov. 07, 2022

Monolithic breathable film and composite manufactured therefrom

Applicant:

Avintiv Specialty Materials Inc., Charlotte, NC (US);

Inventor:

Rongguo Zhao, Mooresville, NC (US);

Assignee:

AVINTIV Specialty Materials Inc., Charlotte, NC (US);

Attorney:

BURR & FORMAN

Primary Examiner:

Abbas Rashid

Assistant Examiner:

Adrianna N Konves

Int. Cl.
CPC ...
B32B 27/08 (2006.01); B29C 48/08 (2019.01); B29C 48/16 (2019.01); B29C 48/18 (2019.01); B32B 3/30 (2006.01); B32B 5/02 (2006.01); B32B 7/12 (2006.01); B32B 27/12 (2006.01); B32B 27/20 (2006.01); B32B 27/28 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01); B32B 37/15 (2006.01); C08L 67/00 (2006.01); C08L 75/04 (2006.01); C08L 77/00 (2006.01);
U.S. Cl.
CPC ...
B32B 27/08 (2013.01); B29C 48/08 (2019.02); B29C 48/16 (2019.02); B29C 48/18 (2019.02); B32B 3/30 (2013.01); B32B 5/022 (2013.01); B32B 5/024 (2013.01); B32B 7/12 (2013.01); B32B 27/12 (2013.01); B32B 27/20 (2013.01); B32B 27/285 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B32B 27/40 (2013.01); B32B 37/15 (2013.01); C08L 67/00 (2013.01); C08L 75/04 (2013.01); C08L 77/00 (2013.01); B32B 2250/24 (2013.01); B32B 2250/40 (2013.01); B32B 2264/02 (2013.01); B32B 2264/04 (2013.01); B32B 2264/067 (2013.01); B32B 2264/10 (2013.01); B32B 2270/00 (2013.01); B32B 2307/724 (2013.01); B32B 2307/7242 (2013.01); B32B 2307/7265 (2013.01); B32B 2535/00 (2013.01);
Abstract

Breathable multilayer films suitable for a wide variety of uses (e.g., protective apparel, surgical gowns, surgical drapes, aprons, roofing material, house wrap, etc.) are disclosed. The breathable multilayer film may include a monolithic core layer. The monolithic core layer may comprise at least one highly breathable polymer. The breathable multilayer film may also include at least one skin layer. The skin layer or layers may comprise at least one highly breathable polymer, a filler, and a non-breathable material. An exemplary structure of the breathable multilayer film provides a monolithic core layer, a first skin layer on one side of the monolithic core layer, and a second skin layer on the other side of the monolithic core layer. An exemplary construction of one or both of the skin layers includes one or more highly breathable polymers, a filler, and a non-breathable material. The filler, for example, may comprise calcium carbonate.

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