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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 11479016 B1

PDFFull Text
Date of Patent:
Oct. 25, 2022

Filed:

Mar. 31, 2020

Coextruded crosslinked polyolefin foam with polyamide cap layers

Applicant:

Toray Plastics (America), Inc., North Kingstown, RI (US);

Inventors:

Pawel Sieradzki, Winchester, VA (US);

Jesse Jude Baldwin, Strasburg, VA (US);

Dan Ben-Daat, Winchester, VA (US);

Kaitlyn Michelle Bock, Winchester, VA (US);

Assignee:

Toray Plastics (America), Inc., North Kingstown, RI (US);

Attorney:

Morrison & Foerster LLP

Primary Examiner:

Frank J Vineis

Assistant Examiner:

Donald M Flores, Jr

Int. Cl.
CPC ...
B32B 5/18 (2006.01); B32B 5/32 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); B29C 48/21 (2019.01); B29C 48/07 (2019.01); B32B 27/06 (2006.01); B29K 105/00 (2006.01); B29K 77/00 (2006.01); B29K 105/04 (2006.01); B29K 23/00 (2006.01);
U.S. Cl.
CPC ...
B32B 5/18 (2013.01); B29C 48/07 (2019.02); B29C 48/21 (2019.02); B32B 5/32 (2013.01); B32B 27/065 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01); B29K 2077/00 (2013.01); B29K 2105/0094 (2013.01); B29K 2105/046 (2013.01); Y10T 428/24967 (2015.01);
Abstract

Described herein are physically crosslinked, closed cell continuous multilayer foam structures that includes a foam layer comprising polypropylene, polyethylene, or a combination of polypropylene and polyethylene and a polyamide cap layer. The multilayer foam structure can be obtained by coextruding a multilayer structure comprising at least one foam composition layer and at least one cap composition layer, irradiating the coextruded structure with ionizing radiation, and continuously foaming the irradiated structure.

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