Title:
EXPANSION SHEET BODY, PACKAGE, AND PACKAGING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/074983
Kind Code:
A1
Abstract:
The present invention provides a highly mass-productive and versatile expansion sheet body, an expansible package, and a packaging method. A plurality of cells 22 defined by cell seals 41 for joining overlapped films together are arranged so as to be adjacent to each other, and a fluid is introduced from the upstream side into the cells 22, thereby expanding the cells 33. At least one of the cells 22 is provided with an unexpanded region 36 in the mid-stream section in the midway from the upstream side to the downstream side. A cell seal 41 in a region downstream of the unexpanded region 36 is provided with a connection part which permits flowing of the fluid between the cell seal 41 and an adjacent cell seal 41. The unexpanded region 36 is used as a placement part 26 for a plane sheet 25 and an overlapped part 27.
Inventors:
KOYANAGI YOSHIHUMI (JP)
Application Number:
PCT/JP2019/040586
Publication Date:
April 22, 2021
Filing Date:
October 16, 2019
Export Citation:
Assignee:
KASHIWARA SEITAI CO LTD (JP)
International Classes:
B65D81/02
Domestic Patent References:
| WO2018225758A1 | 2018-12-13 |
Foreign References:
| JP2017518238A | 2017-07-06 | |||
| JP2006188287A | 2006-07-20 |
Attorney, Agent or Firm:
SAMEJIMA Takenobu (JP)
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