Die cutting apparatus with impressible coating
US4955855A · kind A · utility
Inventors
Key dates
| Filing date | Nov 15, 1988 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Nov 15, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B50/20
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
There is disclosed herein an apparatus for forming container blanks from cardboard or other paperboard-like substrates. The apparatus includes a press, platens, a coated plate member, and a die-and-knife assembly. The coating on the plate is impressible by the back edge of the knife for accommodating irregularities in the machine, platen surface, or knife so as to permit the knife edges to substantially lie in a cutting plane. The coating is generally an organic coating which is liquid just above room temperature and solid at room temperature. The impressions are made in the coating and the coating is then hardened for use by polymerization such as by ultraviolet light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.