Processing vinyl extrudate
US4341727A · kind A · utility
7Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1981 |
| Grant date | Jul 27, 1982 |
| Priority date | — |
| Expiry date | Jan 14, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/109
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The manufacture of perforated vinyl strips by feeding the strip material continuously without interruption to a punching apparatus that has two pairs of cooperative rotary dies that punch out closely spaced perforations with the first pair of dies scoring the perforations and the second pair punching out the perforations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.