Process for the production of tubes of a molecularly oriented plastic
US4499045A · kind A · utility
48Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1982 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Aug 5, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2023/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A portion of a plastic tube (16) heated to a temperature at which stretching induces a molecular orientation, is clamped in a sleeve (14), a fluid under pressure is introduced into the portion of tube and the sleeve is moved along the portion of tube to cause its progressive radial expansion until it makes contact with a mould (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.