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.

Date of Patent:
Jun. 16, 2026

Filed:

Jun. 05, 2024
Applicant:

Dow Global Technologies Llc, Midland, MI (US);

Inventors:

Shijun Wang, Shanghai, CN;

Jichang Feng, Shanghai, CN;

Jianping Pan, Shanghai, CN;

Xiaobing Yun, Shanghai, CN;

Zhe Du, Shanghai, CN;

Andong Liu, Shanghai, CN;

Lin Liu, Shanghai, CN;

Hong Yang, Shanghai, CN;

Assignee:

Dow Global Technologies LLC, Midland, MI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D 65/40 (2006.01); B32B 1/00 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B65B 51/10 (2006.01); B65D 33/22 (2006.01);
U.S. Cl.
CPC ...
B65D 33/22 (2013.01); B32B 1/00 (2013.01); B32B 27/08 (2013.01); B32B 27/32 (2013.01); B65B 51/10 (2013.01); B65D 65/40 (2013.01); B32B 2250/242 (2013.01); B32B 2307/31 (2013.01); B32B 2307/72 (2013.01); B32B 2439/46 (2013.01);
Abstract

Multilayer films are disclosed. The multilayer film may include a core layer and a heat seal layer where the heat seal lay comprises a polypropylene copolymer and a polyethylene copolymer. The polypropylene copolymer of the heat seal layer has specific properties such as ethylene content and iCCD elution profile to contribute to the desirable properties of the film. The multilayer film can form effective heat seals, even when in contact with heated contents. The multilayer film can be formed into a bag where the bag is suitable for carrying hot or heated contents.


Find Patent Forward Citations

Wang, Shijun. (2026). Heat resistant thermal seal film (U.S. Patent No. 12654909). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12654909

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…