Method and apparatus for folding printed/coated sheet material
US5088973A · kind A · utility
4Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1989 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Oct 23, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H45/30
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for use with folding machines of the type having a score roll for scoring sheet material which has been coated and/or printed with ink and the like. The method includes, and the apparatus provides for, heating the score roll to a sufficiently high temperature (generally 150.degree.-400.degree. F.) for softening or otherwise tempering the coating material and/or ink for precluding, or minimizing, unsightly damage resulting from cracking of the coating during scoring and creasing, bending or folding of the sheet material along the score line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.