Title:
CONTAINER AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2023003961
Kind Code:
A
Abstract:
To provide a manufacturing method for containers that can achieve a sufficiently high level of both reduced plastic usage and excellent light shielding properties for thin-walled containers.SOLUTION: A manufacturing method of containers according to the present disclosure includes the steps of: (A) preparing a molten resin composition containing at least a resin material and nitrogen in a supercritical state; (B) injecting the molten resin composition into a cavity of a mold; (C) applying dwell pressure and cooling the cavity under the pressure conditions of 5 to 80 MPa after the above (B) step; and (D) recovering a container having a thin-walled section of 0.6 mm or less in thickness from the mold. When the mass of the resin material in the molten resin composition is 100 pts.mass, the quantity of nitrogen in a supercritical state is 0.5 to 2.5 pts.mass.SELECTED DRAWING: Figure 1
Inventors:
MAEKAWA MASATAKA
JIKUMARU TAKASHI
HARADA TAKUJI
JIKUMARU TAKASHI
HARADA TAKUJI
Application Number:
JP2021105372A
Publication Date:
January 17, 2023
Filing Date:
June 25, 2021
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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