Process of making a compacted polyolefin article
US6328923A · kind A · utility
21Cited by
22References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1999 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Apr 2, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/69
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A polyolefin plaque is made by hot compaction of an assembly of fibers of the oriented polymer. It has been found to be beneficial to subject the fibers to a prior crosslinking process. Hot compaction is then less temperature-sensitive and produces plaques with excellent hot strength properties. Preferably the fibers have been subjected to prior stages of irradiation and annealing, both in a non-oxidizing environment, for example acetylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.