Title:
RESIN CONTAINER MANUFACTURING METHOD AND MANUFACTURING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/196658
Kind Code:
A1
Abstract:
This resin container manufacturing method comprises: a first injection molding step in which a bottomed cylindrical intermediate molded body made of a resin is injection-molded; a second injection molding step in which a resin material is injection-molded on the intermediate molded body to manufacture a multilayer preform in which a resin layer is layered on the intermediate molded body; and a blow molding step in which the multilayer preform is blow-molded, while the residual heat from the time of injection molding is retained, to produce a resin container. The multilayer preform is formed such that the bottom is thicker than a trunk section. In the blow molding step, at least one surface of the bottom of the multilayer preform is pressed by a mold, and a three-dimensional pattern corresponding to the mold is transferred to the thick bottom section of the resin container.
Inventors:
OIKE TOSHITERU (JP)
ISHIZAKA KAZUYA (JP)
ISHIZAKA KAZUYA (JP)
Application Number:
PCT/JP2022/011443
Publication Date:
September 22, 2022
Filing Date:
March 14, 2022
Export Citation:
Assignee:
NISSEI ASB MACHINE CO LTD (JP)
International Classes:
B29C49/06; B29B11/08; B29C33/42; B29C45/16; B29C45/26; B29C49/12; B29C49/22; B65D1/00
Domestic Patent References:
| WO2013012067A1 | 2013-01-24 |
Foreign References:
| JPS56166027A | 1981-12-19 | |||
| JPH05169521A | 1993-07-09 | |||
| JPS4925182B1 | 1974-06-28 | |||
| JP2009012789A | 2009-01-22 |
Attorney, Agent or Firm:
TAKAOKA Ryoichi et al. (JP)
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