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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 10119000 B1

PDFFull Text
Date of Patent:
Nov. 06, 2018

Filed:

Mar. 06, 2014

Laminate film using polylactic acid-based resin

Applicants:

Toray Industries, Inc., Tokyo, JP;

Nanotheta Co, Ltd., Tokyo, JP;

Inventors:

Motonori Hochi, Otsu, JP;

Yuki Goto, Otsu, JP;

Katsuhiro Minomo, Otsu, JP;

Naomi Tamimiya, Otsu, JP;

Assignees:

TORAY INDUSTRIES, INC., Tokyo, JP;

NANOTHETA CO, LTD., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Prashant J Khatri

Int. Cl.
CPC ...
C08J 5/18 (2006.01); A61L 15/50 (2006.01); B32B 27/36 (2006.01); A61L 15/22 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 3/30 (2006.01); B32B 7/02 (2006.01); A61L 15/64 (2006.01); A61L 15/24 (2006.01); A61L 15/26 (2006.01); A61L 15/28 (2006.01);
U.S. Cl.
CPC ...
C08J 5/18 (2013.01); A61L 15/225 (2013.01); A61L 15/24 (2013.01); A61L 15/26 (2013.01); A61L 15/28 (2013.01); A61L 15/50 (2013.01); A61L 15/64 (2013.01); B32B 3/30 (2013.01); B32B 7/02 (2013.01); B32B 27/08 (2013.01); B32B 27/306 (2013.01); B32B 27/36 (2013.01); B32B 2307/538 (2013.01); B32B 2556/00 (2013.01); C08J 2305/00 (2013.01); C08J 2329/04 (2013.01); C08J 2367/00 (2013.01); C08J 2367/04 (2013.01); C08J 2405/00 (2013.01); C08J 2429/04 (2013.01); C08J 2467/00 (2013.01); C08J 2467/04 (2013.01);
Abstract

Our invention is a laminate film comprising a water-soluble resin layer and a polylactic acid-based resin layer laminated on at least one side of a substrate film, the water-soluble resin layer has a thickness of 0.1 to 15 μm, the polylactic acid-based resin layer has a thickness of 10 to 500 nm. Such a configuration provides a laminate film of which the water-soluble resin layer and the polylactic acid-based resin layer are easily separated from the substrate film and which is excellent in coating ability, adherence and followability to a soft and curved adherend, as well as compatibility to skin and organs such as viscera, so as to be suitable for wound dressing, adhesion prevention material and a skin external agent such as skin-care product.

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