国家/地区 中国（2）
IPC部 B（2）
IPC大类 B29（2）
IPC小类 B29C（2）
IPC B29C048/00（2）
发明人
公开年
申请年 2022（2）
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

Antiviral PTFE film used in mask, comprises filter layer with nano holes and antiviral layer comprising graphene positioned on surface of filter layer.

WANG W, CHEN D