国家/地区 中国（4）
IPC部 B（4）
IPC大类 B29（4）
IPC小类 B29D（4）
IPC C09D007/61（4）
发明人 LIU Z（2）
公开年 2020（2） 2023（2）
申请年 2022（2） 
专利权人

High-transparent and high-strength polyethylene heat-shrinkable film useful for packaging bottle-packed beverage, comprises e.g. first layer (comprised of low-density and metallocene polyethylene), second layer, third layer and fourth layer (comprised of high density polyethylene).

LIU Z, LI R, LIU S

Preparing internal spiral polyvinyl chloride drainage pipe, comprises e.g. bending and spiraling steel wire, extruding, injecting into brushing mechanism, carrying out spiral groove processing, forming inner spiral groove, spraying, extruding, painting and performing preliminary drying.

LIU Z

Preparing heating tube used for water heat pipe detection device, involves spraying acid solution on steel tube of metal material, adding phenolic resin to absolute ethanol, adding aluminum oxide, laying graphene fiber web, and extruding.

FANG Z

Antistatic film comprises glass substrate, filler layer, first base film, coating layer, modification layer, graphene powder layer, and second base film, deposition layer, third base film and antistatic layer stacked from bottom to top.

LIU X, ZHOU X