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.:
Date of Patent:
Nov. 04, 2025
Filed:
Jun. 17, 2025
China Tobacco Yunnan Industrial Co., Ltd., Kunming, CN;
Baoshan Yue, Kunming, CN;
Zhihua Liu, Kunming, CN;
Zhenhua Yu, Kunming, CN;
Jiao Xie, Kunming, CN;
Geng Li, Kunming, CN;
Ying Zhang, Kunming, CN;
Hao Wang, Kunming, CN;
Han Zheng, Kunming, CN;
Yongfa Gui, Kunming, CN;
Tingting Yu, Kunming, CN;
Jing Zhang, Kunming, CN;
Jiang Yu, Kunming, CN;
CHINA TOBACCO YUNNAN INDUSTRIAL CO., LTD., Kunming, CN;
Abstract
A method for improving the glossiness and ink color fastness of a printed color film is disclosed. The printed color film is a composite biaxially oriented polypropylene (BOPP) film. The method includes: (1) pre-treating the outer and inner surfaces of the composite BOPP film; (2) coating the outer and inner surfaces of the composite BOPP film with a surface-modifying coating agent and drying at a high temperature; and (3) printing the outer surface of the composite BOPP film with a water-based colored ink, and drying to obtain the printed color film. An application of the printed color film obtained by the method for tobacco packaging film to improve the glossiness and the ink color fastness of the printed color film is also disclosed.