国家/地区 中国（2）
IPC部 B（2）
IPC大类 B29（2）
IPC小类 B29D（2）
IPC B31B070/64（2）
发明人
公开年
申请年 2021（2）
专利权人

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

Method for processing plastic bag, involves stacking each two sheets of finished product film, carrying out semi-closed three-surface heat sealing, cooling and cutting to obtain plastic bag after heat sealing.

LIANG D