国家/地区 中国（3）
IPC部 B（3）
IPC大类 B65（3） D21（3）
IPC小类 B65D（3） D21H（3）
IPC B65D065/40（3）
发明人
公开年 2022（3）
申请年 2021（3） 
专利权人

Oil-proof paper useful as packaging container for accommodating oily food, comprises base paper layer, enzyme-cleaved starch, polyvinyl alcohol, kaolin, latex, graphene, carboxymethyl cellulose and sodium hydroxide.

TIAN W, WANG J, QIU R, JIANG Y

Paper-plastic composite bag comprises paper layer includes e.g. polypropylene, composite flame retardant, polyvinyl chloride-kaolin composite material, heat-resistant polyurethane, sunscreen, dioctyl phthalate and plastic layer.

WEN C, ZHOU G

Producing paper packaging bag comprises impregnating inner packaging base paper layer, and outer packaging base paper layer, drying, coating impregnated inner packaging base paper layer and outer packaging base paper layer with barrier adhesive material, hot pressing and cooling.

NI H, CHEN F, YANG J