Title:
MOUTHPIECE AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2022099905
Kind Code:
A
Abstract:
To provide a method of manufacturing a mouthpiece that is light in weight due to foaming and that can adequately control liquid leakage.SOLUTION: A method of manufacturing a mouthpiece disclosed herein includes: a process (A) for preparing a molten resin composition containing a resin material and a supercritical fluid; a process (B) for injecting the molten resin composition into a cavity of a mold; a process (C) for foaming the molten resin composition in the cavity by decreasing the pressure; and a process (D) for recovering from the mold a mouthpiece with a plurality of voids originating from the foaming of the molten resin composition. When supercritical nitrogen is used in the process (A), 0.1 to 1.2 pts.mass of nitrogen is added to 100 pts.mass of the resin material. When supercritical carbon dioxide is used in the process (A), 0.8 to 4.2 pts.mass of carbon dioxide is added to 100 pts.mass of the resin material.SELECTED DRAWING: Figure 1
Inventors:
MITA TOMOKO
HARADA TAKUJI
YAMAZAKI TOMOHISA
HARADA TAKUJI
YAMAZAKI TOMOHISA
Application Number:
JP2020213973A
Publication Date:
July 05, 2022
Filing Date:
December 23, 2020
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD
International Classes:
B29C44/00; B29C45/00
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Yohei Suzuki
Yoshiki Kuroki
Yohei Suzuki
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