Apparatus for making a thin walled container from a plastic resin
US4536148A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1984 |
| Grant date | Aug 20, 1985 |
| Priority date | — |
| Expiry date | Jun 26, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2791/007
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The apparatus for making thin-walled containers from plastic resins includes a heater for raising the temperature of the resin sheet, a product mold and a preform mold located in axial alignment and movable relative together. The preform mold includes a reciprocal piston that is arranged, when the molds are closed on the resin sheet, to be moved in response to fluid pressure to force the sheet into the product mold while gas pressure is applied to the interior of the sheet to force the resin sheet into the final product configuration. The elongation of the sheet by the piston and the radial deformation caused by the gas, biaxially orient the material to increase the strength of the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.