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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 11628648 B1

PDFFull Text
Date of Patent:
Apr. 18, 2023

Filed:

Mar. 31, 2020

Method of making 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:

Irina S Zemel

Int. Cl.
CPC ...
B32B 5/20 (2006.01); C08J 9/00 (2006.01); B32B 27/06 (2006.01); C08J 9/10 (2006.01); B32B 27/08 (2006.01); B32B 5/32 (2006.01); B29C 48/16 (2019.01); B29C 48/18 (2019.01); B29C 44/02 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01);
U.S. Cl.
CPC ...
B32B 5/20 (2013.01); B29C 44/022 (2013.01); B29C 48/16 (2019.02); B29C 48/18 (2019.02); B32B 5/32 (2013.01); B32B 27/065 (2013.01); B32B 27/08 (2013.01); C08J 9/0061 (2013.01); C08J 9/103 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); B32B 2266/025 (2013.01); B32B 2266/0257 (2013.01); B32B 2305/022 (2013.01); B32B 2305/72 (2013.01); B32B 2310/0881 (2013.01); B32B 2323/04 (2013.01); B32B 2323/10 (2013.01); B32B 2377/00 (2013.01); C08J 2201/026 (2013.01); C08J 2201/03 (2013.01); C08J 2203/04 (2013.01); C08J 2205/052 (2013.01); C08J 2323/06 (2013.01); C08J 2323/12 (2013.01); C08J 2333/24 (2013.01);
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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