Process of making molecularly oriented polymer profiles
US5807516A · kind A · utility
17Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | May 10, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/729
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A continuous process for the production of an oriented high modulus profile is provided together with the novel profiles produced thereby. A dry polymer feedstock is melted and extruded through a die to form a profile precursor having a constant cross-section and specific dimensions. Sequential passage of the profile precursor through roller dies reduces its thickness whilst imparting molecular orientation thereto. The profile is cooled under tension to freeze in the molecular orientation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.