Title:
PAPER FILM BAG MANUFACTURING PROCESS
Document Type and Number:
WIPO Patent Application WO/2021/056661
Kind Code:
A1
Abstract:
Disclosed is a paper film bag manufacturing process, comprising the following steps: S1, performing gravure plate manufacturing, specifically, manufacturing a gravure printing plate according to use requirements; S2, cutting paper to enable the paper to be of a proper size; S3, performing printing processing on the paper, wherein a front face is printed using water-based ink, and a back face is printed using a water-based thermosensitive adhesive by using a gravure printing unit; and S4, performing high-temperature hot-pressing sealing, and finally obtaining a paper film bag. By means of the process, the degradation problem caused by the use of a plastic film is eliminated, and a gravure printing technology is used at a sealing position of a paper film bag so as to guarantee stable adhesion during hot sealing; and no toxic and harmful substances are generated, and the paper film bag can be used for food packaging.
Inventors:
CHAN KENNETH CHI KIN (CN)
Application Number:
PCT/CN2019/113539
Publication Date:
April 01, 2021
Filing Date:
October 28, 2019
Export Citation:
Assignee:
SUN HING PRINTING COMPANY LTD (CN)
International Classes:
B31B70/62
Domestic Patent References:
WO1991017043A1 | 1991-11-14 |
Foreign References:
CN105922639A | 2016-09-07 | |||
CN2298275Y | 1998-11-25 | |||
US3269643A | 1966-08-30 | |||
CN104802455A | 2015-07-29 | |||
CN107433736A | 2017-12-05 | |||
KR20180011579A | 2018-02-02 | |||
CN108297487A | 2018-07-20 | |||
CN109849433A | 2019-06-07 |
Attorney, Agent or Firm:
SHENZHEN SEMHOPE GUANGLIANINTELLECTUAL PROPERTY AGENCY (CN)
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