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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 12552143 B1

PDFFull Text
Date of Patent:
Feb. 17, 2026

Filed:

Mar. 04, 2024

Polyolefin adhesive film

Applicant:

Nan Ya Plastics Corporation, Taipei, TW;

Inventors:

Te-Chao Liao, Taipei, TW;

Ching-Yao Yuan, Taipei, TW;

Chih-Feng Wang, Taipei, TW;

Teng-Ko MA, Taipei, TW;

Assignee:

NAN YA PLASTICS CORPORATION, Taipei, TW;

Attorney:

Li & Cai Intellectual Property Office

Primary Examiner:

Sheeba Ahmed

Int. Cl.
CPC ...
B32B 27/32 (2006.01); B32B 7/12 (2006.01); B32B 15/085 (2006.01); B32B 15/20 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); C08J 5/18 (2006.01); C08K 3/36 (2006.01); C08K 5/5435 (2006.01); C08K 9/06 (2006.01); C08L 53/00 (2006.01); C09J 7/24 (2018.01); C09J 7/38 (2018.01);
U.S. Cl.
CPC ...
B32B 27/32 (2013.01); B32B 7/12 (2013.01); B32B 15/085 (2013.01); B32B 15/20 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); C08J 5/18 (2013.01); C08K 3/36 (2013.01); C08K 5/5435 (2013.01); C08K 9/06 (2013.01); C08L 53/005 (2013.01); C09J 7/243 (2018.01); C09J 7/381 (2018.01); B32B 2250/04 (2013.01); B32B 2264/1021 (2020.08); B32B 2264/303 (2020.08); B32B 2270/00 (2013.01); B32B 2307/31 (2013.01); B32B 2307/414 (2013.01); B32B 2307/748 (2013.01); B32B 2457/10 (2013.01); C08J 2353/00 (2013.01); C08J 2423/08 (2013.01); C08J 2423/30 (2013.01); C09J 2400/10 (2013.01); C09J 2400/20 (2013.01); C09J 2423/106 (2013.01);
Abstract

A polyolefin adhesive film includes a support base layer and a bonding adhesive layer formed on the support base layer. The support base layer is a polypropylene film. The bonding adhesive layer includes: a polyolefin copolymer and inorganic particles dispersed in the polyolefin copolymer. The polyolefin copolymer is modified by maleic anhydride, and the inorganic particles are modified by epoxy siloxane. A graft ratio of the maleic anhydride modified on the polyolefin copolymer ranges from 1% to 5%. A weight ratio of the epoxy siloxane modified on the inorganic particles ranges from 0.3% to 4%. When the polyolefin adhesive film undergoes a heating operation, the epoxy siloxane modified on the inorganic particles and the maleic anhydride modified on the polyolefin copolymer undergo a cross-linking reaction, so that a hardness of the bonding adhesive layer is increased.

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