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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 11738492 B1

PDFFull Text
Date of Patent:
Aug. 29, 2023

Filed:

Mar. 31, 2016

Methods of producing polyolefin foam sheets and articles made thereof

Applicant:

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

Inventors:

Jesse J. Baldwin, Strasburg, VA (US);

Gary H. Clark, Front Royal, VA (US);

Donald A. Foltz, Fort Valley, VA (US);

Paul F. Geibler, Lake Frederick, VA (US);

Pawel Sieradzki, Cross Junction, VA (US);

Assignee:

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

Attorney:

DLA Piper LLP (US)

Primary Examiner:

Maria V Ewald

Assistant Examiner:

Ethan Weydemeyer

Int. Cl.
CPC ...
B29C 35/08 (2006.01); B29C 44/34 (2006.01); C08J 9/10 (2006.01); B29C 48/00 (2019.01); B29C 44/56 (2006.01); B29C 71/04 (2006.01); B29C 44/50 (2006.01); B29K 23/00 (2006.01); B29K 105/04 (2006.01);
U.S. Cl.
CPC ...
B29C 48/0012 (2019.02); B29C 35/0805 (2013.01); B29C 35/0866 (2013.01); B29C 44/3415 (2013.01); B29C 44/5627 (2013.01); B29C 48/0022 (2019.02); B29C 71/04 (2013.01); C08J 9/103 (2013.01); B29C 44/50 (2013.01); B29C 2035/085 (2013.01); B29C 2035/0872 (2013.01); B29C 2035/0877 (2013.01); B29K 2023/06 (2013.01); B29K 2023/12 (2013.01); B29K 2105/04 (2013.01); B29K 2995/0072 (2013.01); C08J 2201/026 (2013.01); C08J 2201/03 (2013.01); C08J 2203/04 (2013.01); C08J 2323/14 (2013.01); C08J 2423/20 (2013.01);
Abstract

A method of manufacturing a polyolefin foam sheet composition includes extruding a polyolefin sheet, irradiating the extruded sheet to obtain a physically crosslinked sheet, foaming the physically crosslinked sheet with heat to obtain a foamed layer, and skiving the foamed layer to obtain a foam sheet with at least one skived surface. The surface roughness of the skived surface of the foam sheet is different from the surface roughness of an unskived surface.

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