国家/地区 中国（3）
IPC部 B（3） D（2）
IPC大类 B32（3） B65（3） B31（2）
IPC小类 B32B（3）
IPC B32B027/32（3）
发明人
公开年 2022（3）
申请年 2021（2） 
专利权人

High-strength microfiber shielding material, which is a double-layer/three-layer composite structure including an outer support layer and a filter layer, and three-layer composite structure includes inner and outer two-layer support layers.

LI Q, LI Y, YANG Y, YANG H, ZHANG L, CUI J, CHENG J, LIN G, ZHOU Y, LIU N, JIANG F, WANG G

Dry composite paper plastic zipper packaging bag comprises bag body and zipper provided on bag body, and bag body made of composite film, composite film sequentially includes e.g. biaxially oriented polypropylene layer, first adhesive layer, kraft paper layer, second adhesive layer.

HUANG Y

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