Olefin polymers
US6458727B1 · kind B1 · utility
41Cited by
21References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2000 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Feb 23, 2021 |
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-oxidising environment, for example acetylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.