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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 10556409 B1

PDFFull Text
Date of Patent:
Feb. 11, 2020

Filed:

Mar. 22, 2016

Polyethylene film

Applicant:

Toyobo Co., Ltd., Osaka-shi, Osaka, JP;

Inventors:

Wakato Tomatsu, Inuyama, JP;

Hirokazu Ogi, Inuyama, JP;

Akira Matsuda, Inuyama, JP;

Assignee:

TOYOBO CO., LTD., Osaka-shi, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Nancy R Johnson

Int. Cl.
CPC ...
B32B 27/32 (2006.01); B23B 27/08 (2006.01); C08J 5/18 (2006.01); C08L 23/06 (2006.01); B29C 48/00 (2019.01); C08L 23/04 (2006.01); B32B 27/08 (2006.01); B29C 48/08 (2019.01); B29C 48/21 (2019.01); B29C 48/88 (2019.01); B29K 23/00 (2006.01); B29K 105/00 (2006.01); B29K 105/16 (2006.01); B29K 509/08 (2006.01); B29L 7/00 (2006.01); B29C 48/30 (2019.01); B29C 48/305 (2019.01);
U.S. Cl.
CPC ...
B32B 27/32 (2013.01); B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 48/21 (2019.02); B29C 48/914 (2019.02); B29C 48/917 (2019.02); B32B 27/08 (2013.01); C08J 5/18 (2013.01); C08L 23/04 (2013.01); C08L 23/06 (2013.01); B29C 48/30 (2019.02); B29C 48/305 (2019.02); B29K 2023/0625 (2013.01); B29K 2105/0088 (2013.01); B29K 2105/0094 (2013.01); B29K 2105/16 (2013.01); B29K 2509/08 (2013.01); B29L 2007/008 (2013.01); B32B 2307/72 (2013.01); B32B 2323/046 (2013.01); C08J 2323/06 (2013.01); C08J 2423/12 (2013.01); C08L 2203/162 (2013.01); C08L 2205/02 (2013.01);
Abstract

Provided is a polyethylene film showing more excellent blocking resistance in unwinding from the film roll state and more excellent blocking resistance between sealants after lamination with a base material, and having transparency and excellent heat sealing property even at low temperatures. A polyethylene film wherein in at least either face, a ratio between an arithmetic mean roughness in a machine direction of film (Ra(MD)), and an arithmetic mean roughness in a direction perpendicular to the machine direction (Ra(TD)) satisfies the following formula (1):1.2≤()/()≤3.6  (1) (Ra(MD): arithmetic mean roughness [μm] measured in the machine direction of film, and Ra(TD): arithmetic mean roughness [μm] measured in the direction perpendicular to the machine direction of film).

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