国家/地区 中国（2）
IPC部 B（2） C（2）
IPC大类 B29（2）
IPC小类 B29D（2）
IPC B32B027/08（2）
发明人
公开年 2021（2）
申请年 2020（2）
专利权人

Polyethylene (PE) multilayer barrier composite film comprises PE/adhesive layer/ethylene vinyl alcohol composite barrier layer/adhesive layer/PE which are laminated layer by layer.

ZHANG Q, LI Y, WANG W, LI G

Preparing trenchless construction reinforced wear-resistant polyethylene gas pipe, comprises e.g. extruding block copolymer polypropylene, graphene black masterbatch, polyethylene resin and polyethylene graft resin, cooling, and shaping.

LIU J, FU Y, MEI L, TENG X, LIU W, WAN G, TIAN X