国家/地区 中国（2）
IPC部 B（2）
IPC大类 B32（2）
IPC小类 B32B（2）
IPC D21H027/10（2）
发明人
公开年 2022（2）
申请年 2021（2）
专利权人

Printing box for large sheet-shaped automatic packaging line, has top part of graphene aqueous painting layer that is provided with printing ink pattern layer.

LI C, WANG 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