Internal cooling tower for film blowing lines
US10052799B2 · kind B2 · utility
5Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2015 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Jan 3, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2101/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An internal cooling tower for a film blowing line with one or more superimposed cooling air nozzles designed such that the entrainment of droplets consisting of low-molecular components of the raw material that diffuse during the film blowing process from the film into the flow of cooling air is prevented. This is achieved in that at the height of the nozzle gap, the top surface of the cooling air nozzles has a grooved contour both on the inside and the outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.