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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2021/002113
Kind Code:
The present invention aims to provide a paper container that can minimize the amount of resin material used and suppress the occurrence of fluid leakage routes without causing a gap in an area, in a bottom step section, formed by a gluing margin and a step at the edge of a side seal section. This paper container (1) has: a body (10) formed from a body piece (15) having a side seal section (18) in which both side ends (12) of a body blank (11) are overlapped; and a bottom section (20) formed from a bottom piece (25) having a flat plate (22) in the center of a bottom blank (21) and a gluing margin (23) that continues on from and is bent downwards from the outer rim of the flat plate. The paper container is characterized by: having the body piece and the bottom piece being integrally joined via a bottom seal section (28); and the body and the bottom section being in close contact in an area formed by the glue margin and a step at the edge of the side seal section, in a cross-section of a bottom step section (29).

ASANO Makoto (JP)
Application Number:
Publication Date:
January 07, 2021
Filing Date:
May 22, 2020
Export Citation:
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International Classes:
B65D3/14; A47G19/00; A47G19/22; B32B29/00; B65D3/22
Attorney, Agent or Firm:
FUJIMOTO Nobuo et al. (JP)
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