Cooling thermoplastic tubes
US4138458A · kind A · utility
2Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1977 |
| Grant date | Feb 6, 1979 |
| Priority date | — |
| Expiry date | Jul 18, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/002
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Tubular film-forming system in which a tubular extrudate is rapidly cooled and the cooled tube is withdrawn by engagement with a movable fluid-shedding surface which firmly grips the tube without damaging the surface thereof. The system is particularly suitable for gripping a tube the surface of which is moistened by liquid from an annular cooling bath.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.