Punch press for piercing green sheet with liner
US4990080A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Jun 23, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/654
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A punch press machine for piercing a so-called green sheet made from a ceramic compound formed as a thin tape utilized for IC substrate and the like after sintering for solidification. The green sheet is adhered to a liner, such as a plastic tape, and has a core portion. The punch press machine is capable of piercing the green sheet together with the liner, without peeling of the tape liner from the core portion of green sheet. The machine consists of a punch press section, a work piece feeding section and a drive mechanism to move the work piece feeding section or the punch press section under mechanical automation, thus facilitating the piercing work with high productivity and quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.