High volume production of low permeation plastic fuel tanks using parallel offset twinsheet pressure forming
US6969485B2 · kind B2 · utility
6Cited by
15References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2001 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Dec 28, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1383
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Processes are disclosed for producing plastic containers from thermoplastic sheets where the thermoplastic sheets are processed in parallel to form a low permeation plastic container. A plurality of thermoplastic sheets are progressively heated to a first temperature in a pre-conditioning stage. A group of the thermoplastic sheets are selected from the plurality of thermoplastic sheets and rapidly heated to a second temperature in a final heat stage. The group of thermoplastic sheets are then processed in a forming stage to form the low permeation plastic container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.