Title:
多層プリフォームの製造方法および多層容器の製造方法
Document Type and Number:
Japanese Patent JP6909441
Kind Code:
B2
Abstract:
To provide a method for manufacturing a multilayer preform which can be used for manufacturing a multilayer container which can remarkably prevent occurrence of delamination due to increase/decrease in a container internal pressure.SOLUTION: A method for manufacturing a multilayer preform of the present invention comprises steps of: heating and melting two or more kinds of resin compositions; and injecting the heated and melted resin compositions into a mold. A multilayer preform includes at least a layer composed of a resin composition including a titanium catalyst polyester resin and a layer composed of a resin composition including a polyamide resin as adjacent layers. A difference between a heat-melting temperature A of the resin composition including the titanium catalyst polyester resin and a heat-melting temperature B of the resin composition including the polyamide resin is 20°C or lower.SELECTED DRAWING: Figure 3
Inventors:
High school
Application Number:
JP2017188725A
Publication Date:
July 28, 2021
Filing Date:
September 28, 2017
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
B29C45/16; B32B27/34; B32B27/36; B65D1/02
Domestic Patent References:
| JP2016198911A | ||||
| JP2016198912A | ||||
| JP2015157470A | ||||
| JP2019064025A |
Foreign References:
| WO2015020132A1 | ||||
| WO2013002072A1 |
Attorney, Agent or Firm:
Hiroyuki Nagai
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Mari Asano
Takaaki Suemori
Yukitaka Nakamura
Yasukazu Sato
Satoru Asakura
Mari Asano
Takaaki Suemori