Title:
PAPER CONTAINER
Document Type and Number:
WIPO Patent Application WO/2021/112204
Kind Code:
A1
Abstract:
A paper container that makes it possible to easily sever a sealing sheet that is formed from a synthetic resin and seals a through hole that is a liquid extraction port and thereby makes it possible to unseal the liquid extraction port. The paper container is formed from a paper base material that has a synthetic resin layer provided on front and back surfaces thereof. The paper container has a top surface 4 in which a through hole 6 that is a liquid extraction port 5 is provided. The through hole 6 is unsealably sealed by a sealing sheet 7 that is formed from a synthetic resin. A fragile part 9 that has been modified by means of a laser irradiation treatment is provided to a surface of the sealing sheet 7 that is exposed at the through hole 6.
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Inventors:
NAGAMI TOMOYUKI (JP)
TANAKA ATSUSHI (JP)
TANAKA ATSUSHI (JP)
Application Number:
PCT/JP2020/045145
Publication Date:
June 10, 2021
Filing Date:
December 03, 2020
Export Citation:
Assignee:
JUJO PAPER CO LTD (JP)
International Classes:
B65D5/40; B65D5/72
Domestic Patent References:
| WO2006038251A1 | 2006-04-13 |
Foreign References:
| JPH0671421U | 1994-10-07 | |||
| JPH0740976A | 1995-02-10 | |||
| JP2019077470A | 2019-05-23 | |||
| JPH08217069A | 1996-08-27 | |||
| JP2015209215A | 2015-11-24 |
Attorney, Agent or Firm:
OTSUKA, Akihiro et al. (JP)
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