国家/地区 中国（2）
IPC部 B（2）
IPC大类 B29（2）
IPC小类 B29B（2）
IPC B32B027/08（2）
发明人
公开年 2023（2）
申请年 2022（2） 
专利权人

Black-and-white black three-layer light-shielding film useful for manufacturing full shading curtain and spinning home textile, comprises first light-shielding film, second light-shielding film, and third light-shielding film comprising diisocyanate, polypropylene carbonate diol and chain extender.

HE J

Preparing thermoplastic elastomer oil bag cloth useful for storing and transporting petroleum, and various fuel, comprises e.g. using padding machine to process base cloth, extruding excess rubber by roll, and carrying out surface polarization and crosslinking treatment on coating layer.

LI J, LI B