Apparatus for thermoforming hollow article having a high L/D ratio
US4162883A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1977 |
| Grant date | Jul 31, 1979 |
| Priority date | — |
| Expiry date | Oct 14, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/0069
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a thermoforming process and apparatus or machine including a male mold assembly and a pressure box or a female mold assembly disposed on support members or platens maintained in fixed relationship to each other whereby the pressure box assembly is first caused to pass through the plane of the heated plastic material whereafter the male mold then is caused to move into the pressure box together with the simultaneous introduction of controlled amounts of a pressurized fluid until complete interrelationship is attained with relative movement of the male mold to the pressure box being continued to a point proximate the plane of heated thermoplastic material as more clearly hereinafter discussed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.