Process and a device for cooling a pipe during its manufacture by extrusion
US5422063A · kind A · utility
8Cited by
13References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1994 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Feb 23, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/09
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention proposes an improved process and a device for cooling the internal surface of the wall of a pipe made of plastic during its manufacture by extrusion. The cooling agent is dispersed on the internal surface of the pipe by successive atomization at given time intervals. The cooling agent is advantageously dispersed by means of an injection which is displaced axially inside the pipe in a reciprocating movement. The injector may be advantageously equipped with means providing a rotating cone of dispersed droplets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.