Title:
CUP LID
Document Type and Number:
WIPO Patent Application WO/2020/170438
Kind Code:
A1
Abstract:
[Problem] To provide a cup lid having high sealability although using a paper.
[Solution] A cup lid 80 separates a region surrounded by a first half-cut line 60a and a second half-cut line 60b from a front surface side and a rear surface side thereof, hooks the front surface side on a lower part of a flange 4 as a hooking part 64a, and uses the rear surface side to seal the flange 4 as a sealing part 64b. As a result, an upper surface of the flange 4 is sealed closely, and a cut area 9 does not exist at the flange 4 unlike a conventional lid body part 10. Therefore, high sealability can be obtained. Besides, in a configuration in which an inner lid part 40 is provided beneath a lid body part 20, sealability can be further improved. Moreover, in a configuration in which the inner lid part 40 has a protrusion part 42, an elastic force of the sealing part 64b further increases adhesion to the lid body part 20. As a result, the sealiability of the cup lid 80 can be further improved.
Inventors:
KOYATA MASAHIRO (JP)
Application Number:
PCT/JP2019/006841
Publication Date:
August 27, 2020
Filing Date:
February 22, 2019
Export Citation:
Assignee:
FIRSTAID CO LTD (JP)
International Classes:
B65D5/64
Foreign References:
| JP2008074485A | 2008-04-03 | |||
| JP2001354224A | 2001-12-25 |
Attorney, Agent or Firm:
HATORI Wataru et al. (JP)
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