国家/地区 中国（3）
IPC部 B（3）
IPC大类 B29（3）
IPC小类 B29B（3）
IPC
发明人
公开年 2023（3）
申请年 2022（3） 
专利权人

Preparing butyl rubber /natural rubber alternating multilayer composite material used as tire inner liner material of automobile and airplane, involves alternately laminating and co-extruding natural rubber compound and butyl rubber compound, and vulcanizing.

WU H, DUAN Y, GUO S, XI T, XIONG Y

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

Manufacturing composite fiber preform, preferably carbon-carbon composite material for disc brakes, involves winding composite fiber fabric around core to form composite fiber preform comprising multiple layers defining annulus extending along central axi.

TANG L G, GLEN S, PIAO Y, MURDIE N, JAMES M C, MERDEY N, GUERON S, TANG L