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Title:
COMPOSITE PAPER BAG ROLL PACKAGE FOR PREVENTING SECONDARY POLLUTION OF INNER WALL
Document Type and Number:
WIPO Patent Application WO/2022/078408
Kind Code:
A1
Abstract:
A composite paper bag roll (2) package for preventing secondary pollution of an inner wall, comprising a paper bag roll (2) and an inner core (1). The paper bag roll (2) is formed and rolled on the inner core (1); the inner core (1) is located in the paper bag roll (2); a structural unit, on the paper bag roll (2), consisting of non-input filling areas (020521 and 201621) and heat-seal transverse sealing areas (020512 and 201612) that are adjacent in the vertical direction can be used as a closed paper bag that is independently self-isolated, has a completely closed periphery and a hollow inner wall, and is in a non-input filling state; and the main part of the paper bag roll (2) can be used as a roll paper bag string composed of closed paper bags connected in series one by one.

Inventors:
CHEN YUNLONG (CN)
Application Number:
PCT/CN2021/123620
Publication Date:
April 21, 2022
Filing Date:
October 13, 2021
Export Citation:
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Assignee:
SHANGHAI YEJING IND CO LTD (CN)
International Classes:
B65D33/00; B65D85/672; B65H18/28
Foreign References:
CN112110027A2020-12-22
GB751339A1956-06-27
CN101663200A2010-03-03
CN103253537A2013-08-21
US6135281A2000-10-24
CN204096306U2015-01-14
CN1551850A2004-12-01
Attorney, Agent or Firm:
WEN SHUN ZHI YUAN PATENT AGENT OFFICE (GENERAL PARTNERSHIP) (CN)
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