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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 9023443 B1

PDFFull Text
Date of Patent:
May. 05, 2015

Filed:

Sep. 24, 2010

Multi-layer high moisture barrier polylactic acid film

Applicants:

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

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

Inventors:

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

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

Assignee:

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

Attorney:

Morrison & Foerster LLP

Primary Examiner:

Vivian Chen

Int. Cl.
CPC ...
C09D 123/08 (2006.01); C09D 129/04 (2006.01); C08L 23/08 (2006.01); C08L 29/04 (2006.01); C08K 5/00 (2006.01); C08G 63/06 (2006.01); B32B 3/10 (2006.01); B32B 15/04 (2006.01); B32B 15/082 (2006.01); B32B 15/20 (2006.01); B32B 27/36 (2006.01); B29C 55/02 (2006.01); B29C 55/14 (2006.01); B32B 27/08 (2006.01); C23C 14/02 (2006.01); C23C 14/20 (2006.01); C23C 14/56 (2006.01); B32B 15/085 (2006.01); B32B 15/09 (2006.01); C08G 63/08 (2006.01); B05D 7/04 (2006.01); B29K 67/00 (2006.01);
U.S. Cl.
CPC ...
B32B 27/36 (2013.01); Y10T 428/263 (2015.01); Y10T 428/12486 (2015.01); Y10T 428/12 (2015.01); Y10T 428/269 (2015.01); Y10T 428/24893 (2015.01); Y10T 428/26 (2015.01); Y10T 428/24802 (2015.01); Y10T 428/24851 (2015.01); Y10T 428/24909 (2015.01); Y10T 428/265 (2015.01); Y10T 428/1379 (2015.01); Y10T 428/12549 (2015.01); C09D 123/0861 (2013.01); C09D 129/04 (2013.01); C08L 29/04 (2013.01); C08G 63/08 (2013.01); C08K 5/0025 (2013.01); C08L 23/0861 (2013.01); B32B 15/082 (2013.01); B32B 2255/10 (2013.01); B32B 2307/716 (2013.01); B32B 2307/7246 (2013.01); B32B 2367/00 (2013.01); B32B 15/20 (2013.01); B32B 2255/28 (2013.01); B32B 2307/7163 (2013.01); B32B 2329/04 (2013.01); B32B 2307/7244 (2013.01); B32B 2255/26 (2013.01); B05D 7/04 (2013.01); B29C 55/023 (2013.01); B29C 55/143 (2013.01); B29K 2067/00 (2013.01); B29K 2067/046 (2013.01); B29K 2995/006 (2013.01); B32B 27/08 (2013.01); C23C 14/025 (2013.01); C23C 14/20 (2013.01); C23C 14/562 (2013.01); B32B 15/043 (2013.01); B32B 15/085 (2013.01); B32B 15/09 (2013.01); Y10S 428/91 (2013.01);
Abstract

A laminate film including a first core polylactic acid layer, a coating receiving-layer of polylactic acid, and coated on one side of the coating receiving-layer with PVOH, EVOH, a blend of crosslinked EVOH/PVOH, vinyl alcohol-vinylamine (PVAm) copolymer, anionic carboxylated styrene-butadiene copolymer (SBR) emulsion, or blends thereof. This coating may be applied after the machine-direction orientation step and dried and oriented in a transverse direction orientation oven if in-line coating is desired; or applied to the film in an off-line coating method and dried in an air flotation oven. The dried coating layer can be metallized. This laminate film exhibits excellent gas and moisture barrier properties, appearance, and metal adhesion. It may also optionally include a heat sealable or winding improving layer on the side opposite the coating receiving-layer of the core layer.

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