Title:
PAPER SHEET FITTING METHOD AND PAPER MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2022/097527
Kind Code:
A1
Abstract:
[Problem] To provide a paper sheet fitting method enabling paper sheets to be easily fitted to each other, and a paper molded article having a fitting part.
[Solution] This paper sheet fitting method comprises: a water absorption step of causing at least a partial region of a paper sheet to absorb water; an arrangement step of arranging the water-absorbed region of the paper sheet to be positioned between a pair of first molding surfaces of a press mold; a molding step of closing the press mold and molding the water-absorbed region of the paper sheet into a three-dimensional shape with the pair of first molding surfaces; a stacking step of opening the press mold and stacking another, non-water-absorbed sheet on the molded paper sheet; a fitting step of closing the press mold and molding the stacked object into a three-dimensional shape with the pair of first molding surfaces, to thereby fit the molded paper sheet to the other, non-water-absorbed paper sheet; and an extraction step of opening the press mold and extracting a molded article having a fitting part.
Inventors:
ONISHI ATSUSHI (JP)
NISHIKAWA TETSU (JP)
MIYASHITA SHUHEI (JP)
NAKAGAWA HAJIME (JP)
NISHIKAWA TETSU (JP)
MIYASHITA SHUHEI (JP)
NAKAGAWA HAJIME (JP)
Application Number:
PCT/JP2021/039351
Publication Date:
May 12, 2022
Filing Date:
October 25, 2021
Export Citation:
Assignee:
NISSHA CO LTD (JP)
International Classes:
B31F5/00; B65D1/00; D21J3/00; D21J5/00
Foreign References:
| JPH0813400A | 1996-01-16 | |||
| JP2008137721A | 2008-06-19 | |||
| JP2004243584A | 2004-09-02 | |||
| JP2014145142A | 2014-08-14 | |||
| JP2001097351A | 2001-04-10 |
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