国家/地区 中国（3）
IPC部 B（3）
IPC大类 B29（3）
IPC小类 B29C（3）
IPC C08K003/04（3）
发明人
公开年 2021（2）
申请年 2020（2） 
专利权人

Preparing polypropylene carbonate/agricultural and forestry biomass composite material used for e.g. producing packaging material, by e.g. melting and mixing pre-processed agricultural and woodland biomass, plasticizer and filler, molding to obtain porous material, introducing carbon dioxide foaming.

FU Y

Preparing polyethylene material involves selecting ethylene raw materials and placing in radiation chamber, and irradiating ethylene raw materials in radiation chamber with ultraviolet rays.

WANG L

Special foam board for food packaging, is prepared by stirring polycarbonate, polysulfone resin and polyurethane, adding carbon black, graphene, asbestos and chitosan quaternary ammonium salt, crushing, heating with bamboo fiber and foaming.

YAO D