Continuous vacuum treating apparatus
US4551310A · kind A · utility
11Cited by
11References
14Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 27, 1984 |
| Grant date | Nov 5, 1985 |
| Priority date | — |
| Expiry date | Mar 27, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C59/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A continuous vacuum treating apparatus having a vacuum treating chamber for continuously treating the surface of a plastic molding under a vacuum, and at least one auxiliary vacuum chamber disposed at each of the upstream and downstream sides of the vacuum treating chamber. Each auxiliary vacuum treating chamber includes a pair of seal rolls contacting each other, means for effecting seals between the seal rolls and cases over the entire axial lengths of the rolls, and means for effecting seals between both end surfaces and the cases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.