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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 12503627 B1

PDFFull Text
Date of Patent:
Dec. 23, 2025

Filed:

Apr. 09, 2023

Polyolefin bonding 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:

Zachary M Davis

Int. Cl.
CPC ...
C09J 7/38 (2018.01); B32B 7/12 (2006.01); B32B 15/085 (2006.01); B32B 15/20 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); B65D 65/40 (2006.01); C09J 5/06 (2006.01); C09J 7/24 (2018.01); C09J 7/35 (2018.01);
U.S. Cl.
CPC ...
C09J 7/381 (2018.01); B32B 7/12 (2013.01); B32B 15/085 (2013.01); B32B 15/20 (2013.01); B32B 27/08 (2013.01); B32B 27/30 (2013.01); B32B 27/32 (2013.01); B65D 65/40 (2013.01); C09J 5/06 (2013.01); C09J 7/243 (2018.01); C09J 7/35 (2018.01); B32B 2250/24 (2013.01); B32B 2270/00 (2013.01); B32B 2307/31 (2013.01); B32B 2307/7376 (2023.05); B32B 2307/748 (2013.01); B32B 2405/00 (2013.01); B32B 2439/00 (2013.01); C09J 2301/304 (2020.08); C09J 2301/414 (2020.08); C09J 2400/166 (2013.01); C09J 2423/046 (2013.01); C09J 2423/10 (2013.01); C09J 2451/00 (2013.01); C09J 2451/006 (2013.01); C09J 2453/006 (2013.01);
Abstract

A polyolefin bonding adhesive film includes a support base layer and a bonding adhesive layer formed on a side surface of the support base layer by co-extrusion. The support base layer is a polypropylene film. The bonding adhesive layer is formed of a first polyolefin copolymer modified by maleic anhydride. The first polyolefin copolymer is formed by copolymerization of at least two kinds of C2 to C4 olefin molecules, a first graft ratio of the maleic anhydride grafted onto the first polyolefin copolymer is between 0.5% and 5%, and a first melt index of the first polyolefin copolymer is between 3 g/10 min and 5 g/10 min.

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