Apparatus for cooling a melt strip of thermoplastic synthetic resin and process
US4908165A · kind A · utility
4Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1988 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Oct 17, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/9165
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for cooling a melt strip from a wide-slot die includes a cooling roller driven at a predetermined angular velocity and juxtaposed with a corona-discharge electrode in the form of a rotation symmetrical rigid bar which is rotated about its axis at an angular velocity much greater than that of the cooling roller. The rotating corona-discharge electrode can be received in a nonrotatable insulating chamber having air inlets on a side opposite a slot-shaped outlet training ionized air onto the melt strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.