Title:
RESIN-MADE CONTAINER MANUFACTURING METHOD, MANUFACTURING DEVICE, AND METAL MOLD UNIT
Document Type and Number:
WIPO Patent Application WO/2021/145314
Kind Code:
A1
Abstract:
This resin-made container manufacturing method comprises: a first injection molding step for, by using a first resin material, injection molding a first layer of a bottomed cylindrical preform having grooves extending in an axial direction; a second injection molding step for injecting, in the grooves of the first layer, a second resin material having a color different from that of the first resin material, to layer a second layer on the inner circumference side or the outer circumference side of the first layer; and a blow molding step for blow molding the multilayer preform obtained in the second injection molding step while in a state of having residual heat gained during injection molding, to produce a resin-made container having a vertical-stripe color pattern derived from the second layer.
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Inventors:
OIKE TOSHITERU (JP)
TSUCHIYA YOICHI (JP)
TSUCHIYA YOICHI (JP)
Application Number:
PCT/JP2021/000722
Publication Date:
July 22, 2021
Filing Date:
January 12, 2021
Export Citation:
Assignee:
NISSEI ASB MACHINE CO LTD (JP)
International Classes:
B29C49/22
Foreign References:
| JPS6257488B2 | 1987-12-01 | |||
| JP2019147393A | 2019-09-05 | |||
| JP4953178B2 | 2012-06-13 | |||
| JP5765656B2 | 2015-08-19 | |||
| JP6058484B2 | 2017-01-11 | |||
| JP6058485B2 | 2017-01-11 |
Other References:
See also references of EP 4091793A4
Attorney, Agent or Firm:
TAKAOKA Ryoichi et al. (JP)
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