Device for vacuum-pressing of DVD substrates
US6971428B2 · kind B2 · utility
7Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 22, 2002 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Sep 11, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1744
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a device for vacuum-pressing of disk-shaped substrates, in particular DVD substrates into a finished DVD, wherein the device has a vacuum chamber with two substrate holders and an intermediate element that can be displaced inside the vacuum chamber; and wherein the intermediate element divides the vacuum chamber into a first low-pressure chamber and a second chamber that can be alternatingly connected to vacuum or to an overpressure, which makes the device particularly suited for use with a hot-melt thermoplastic adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.