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 9221213 B1

Date of Patent:

Dec. 29, 2015

Filed:

Feb. 18, 2011

Multi-layer high moisture barrier polylactic acid film

Applicants:

Shichen Dou, Warwick, RI (US);

Tracy A. Paolilli, East Greenwich, RI (US);

John J. Fitch, Middletown, RI (US);

Michael F. Brandmeier, Narragansett, RI (US);

Keunsuk P. Chang, North Kingstown, RI (US);

Inventors:

Shichen Dou, Warwick, RI (US);

Tracy A. Paolilli, East Greenwich, RI (US);

John J. Fitch, Middletown, RI (US);

Michael F. Brandmeier, Narragansett, RI (US);

Keunsuk P. Chang, North Kingstown, RI (US);

Assignee:

TORAY PLASTICS (AMERICA), INC., N. Kingstown, RI (US);

Attorney:

Morrison & Foerster LLP

Primary Examiner:

Vivian Chen

Int. Cl.

CPC ...

B32B 5/16 (2006.01); B32B 15/082 (2006.01); B32B 15/20 (2006.01); B32B 27/18 (2006.01); B32B 27/30 (2006.01); B32B 27/36 (2006.01); B32B 37/15 (2006.01); C08L 23/08 (2006.01); C08L 29/04 (2006.01); C09D 123/08 (2006.01); C09D 129/04 (2006.01); C23C 14/14 (2006.01); B29C 55/02 (2006.01); B29C 55/14 (2006.01); B32B 15/08 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); C08K 3/00 (2006.01); C08K 5/00 (2006.01); B29K 29/00 (2006.01); B29K 67/00 (2006.01);

U.S. Cl.

CPC ...

B29C 55/023 (2013.01); B29C 55/143 (2013.01); B32B 15/08 (2013.01); B32B 15/20 (2013.01); B32B 27/08 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); B29K 2029/04 (2013.01); B29K 2067/046 (2013.01); B29K 2995/006 (2013.01); B29K 2995/0067 (2013.01); B32B 5/16 (2013.01); B32B 15/082 (2013.01); B32B 27/18 (2013.01); B32B 27/30 (2013.01); B32B 27/306 (2013.01); B32B 37/153 (2013.01); B32B 2250/03 (2013.01); B32B 2255/10 (2013.01); B32B 2255/205 (2013.01); B32B 2307/518 (2013.01); B32B 2307/7163 (2013.01); B32B 2307/7246 (2013.01); C08K 3/0025 (2013.01); C08K 5/0033 (2013.01); C08K 2201/018 (2013.01); C08L 23/0861 (2013.01); C08L 29/04 (2013.01); C09D 123/0861 (2013.01); C09D 129/04 (2013.01); C23C 14/14 (2013.01); Y10T 428/12549 (2015.01); Y10T 428/1338 (2015.01); Y10T 428/1341 (2015.01); Y10T 428/1355 (2015.01); Y10T 428/1359 (2015.01); Y10T 428/1379 (2015.01); Y10T 428/24851 (2015.01); Y10T 428/24917 (2015.01); Y10T 428/24975 (2015.01); Y10T 428/265 (2015.01); Y10T 428/266 (2015.01); Y10T 428/269 (2015.01); Y10T 428/31692 (2015.04); Y10T 428/31797 (2015.04);

Abstract

A laminate film including a first polylactic acid layer; a second metal-receiving layer including PVOH, EVOH, or a blend thereof on a side of the first polylactic acid layer; and a metal layer deposited on a side of the metal-receiving layer opposite the polylactic acid layer. The metal-receiving layer may be coextruded with the polylactic acid first layer or may be a coating applied to one side of the polylactic acid first layer. This laminate film exhibits excellent gas and moisture barrier properties, appearance, and metal adhesion. It may also include a heat sealable or winding improving layer on the side opposite the metal receiving-layer of the first polylactic acid layer.

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