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:
Aug. 12, 2025
Filed:
May. 17, 2023
Nan Ya Plastics Corporation, Taipei, TW;
Te-Chao Liao, Taipei, TW;
Shiou-Yeh Sheng, Taipei, TW;
Chao-Hsien Lin, Taipei, TW;
Ching-Yao Yuan, Taipei, TW;
Teng-Ko Ma, Taipei, TW;
Chen-Wei Chang, Taipei, TW;
Han-Yi Lee, Taoyuan, TW;
NAN YA PLASTICS CORPORATION, Taipei, TW;
Abstract
A laminated packaging material, an outer-layer adhesive, and a method for manufacturing the same are provided. The outer-layer adhesive is a polyurethane adhesive formed by a reaction between a polyol material and an isocyanate material. The polyol material is an eco-friendly polyester polyol derived from at least one of a recycled polyester material and a biomass raw material. The eco-friendly polyester polyol has a weight-average molecular weight of between 25,000 and 75,000, a number-average molecular weight of between 18,000 and 55,000, and a glass transition temperature of between −30° C. and 60° C. The isocyanate material includes a first isocyanate component that is an adduct formed by adding toluene diisocyanate (TDI) to a polyol having a functionality of between 2 and 4, and a second isocyanate component that is formed by adding isocyanate to a polyol having a long carbon chain and a functionality of between 2 and 4.