US 11,987,678 B2
Polyester composition film and hot melt adhesive laminate comprising the same
Chung-Hao Tseng, Taipei (TW); and Te-Shun Lin, Taipei (TW)
Assigned to CHANG CHUN PLASTICS CO., LTD., Taipei (TW)
Filed by Chang Chun Plastics Co., Ltd., Taipei (TW)
Filed on Aug. 18, 2022, as Appl. No. 17/890,637.
Claims priority of provisional application 63/313,881, filed on Feb. 25, 2022.
Claims priority of application No. 111125360 (TW), filed on Jul. 6, 2022.
Prior Publication US 2023/0272173 A1, Aug. 31, 2023
Int. Cl. C08J 5/18 (2006.01); B32B 7/02 (2019.01); B32B 7/027 (2019.01); B32B 27/36 (2006.01); C09J 5/06 (2006.01); C09J 7/29 (2018.01); C09J 7/35 (2018.01); C09J 167/02 (2006.01)
CPC C08J 5/18 (2013.01) [C09J 5/06 (2013.01); C09J 7/29 (2018.01); C09J 7/35 (2018.01); C09J 167/025 (2013.01); B32B 7/02 (2013.01); B32B 7/027 (2019.01); B32B 27/36 (2013.01); B32B 2250/02 (2013.01); B32B 2250/244 (2013.01); B32B 2307/30 (2013.01); B32B 2367/00 (2013.01); B32B 2405/00 (2013.01); C08J 2367/02 (2013.01); Y10T 428/14 (2015.01); Y10T 428/2813 (2015.01); Y10T 428/31786 (2015.04)] 14 Claims
OG exemplary drawing
 
1. A polyester composite film, comprising a first thermoplastic polyether ester elastomer film and a second thermoplastic polyether ester elastomer film, the first thermoplastic polyether ester elastomer film including a first thermoplastic polyether ester elastomer resin, and the second thermoplastic polyether ester elastomer film including a second thermoplastic polyether ester elastomer resin,
wherein the melting point of the second thermoplastic polyether ester elastomer resin is higher than the melting point of the first thermoplastic polyether ester elastomer resin, and an absolute difference between the enthalpy of fusion of the first thermoplastic polyether ester elastomer film and the enthalpy of fusion of the second thermoplastic polyether ester elastomer film is more than or equal to 5 J/g and less than or equal to 15 J/g.