Title:
二重壁容器の改善
Document Type and Number:
Japanese Patent JP7329445
Kind Code:
B2
Abstract:
A method and apparatus for the formation of double-walled containers with the structure of two integrally connected and adjacent containers extending in the same direction with an air gap between them, stretch-blow moulded as single bodies out of thermoplastic material, and suitable for mass-production. A thermoplastic tubular blank is formed and then heat-conditioned. The heat-conditioned tubular blank is then mechanically stretched longitudinally and blow-formed outwards by gas pressure to conformingly and stretchingly assume the tubular blank to the shape of a first dual-container shaped mould cavity set in order to form a stretch-blow moulded first container integrally connected to a second container, with both containers extending in opposite directions. Next, additional heat-conditioning is applied to further heat-condition as necessary the stretch-blow moulded second container and if deemed an advantage, at least part of the first container. Then at least one profiled inversion piston and a second dual-container shaped mould cavity set are provided along with one or more wall stability devices applied to at least part of the wall surface(s) of either or both of the two integrally connected stretch-blow moulded containers, such that the second container side wall(s) may be inverted at least partially inside-out, while at the same time the second container bottom wall at least substantially does not invert, in order for the second container to become a substantially mirror-image inverted second container extending in the same direction as the first container, and an air gap is formed between the first container and second container.
Inventors:
Crowley Alan Mark
Application Number:
JP2019546111A
Publication Date:
August 18, 2023
Filing Date:
October 23, 2017
Export Citation:
Assignee:
Crowley Alan Mark
International Classes:
B29C49/48; A47J41/00; B29C49/12; B29C49/64; B29D22/00; B29D24/00; B65D1/40
Domestic Patent References:
| JP51075760A | ||||
| JP58030969A | ||||
| JP63202425A | ||||
| JP64005815A | ||||
| JP10146283A | ||||
| JP4267739A | ||||
| JP3056253A | ||||
| JP2016068990A | ||||
| JP3019978U | ||||
| JP39029325B1 | ||||
| JP2004123146A | ||||
| JP59207218A |
Foreign References:
| US20090283608 | ||||
| US20150076105 | ||||
| US8132687 | ||||
| WO2015150648A1 |
Attorney, Agent or Firm:
Fumio Takino
Toshiaki Tsuda
Yasuhiro Fukuda
Toshiaki Tsuda
Yasuhiro Fukuda