Curl neutralizer
US4539072A · kind A · utility
28Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1984 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Jan 31, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H23/34
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An automatic decurling apparatus is provided for webs of paper material in which two small diameter decurling bars are adjusted into both sides of the web run between two closely spaced rollers around which the web passes in an S-wrap. The decurling bars can be independently adjusted into the web in varying degrees to compensate for predominant curl in one direction of the web. Additional decurling can be obtained by chilling the rollers, incorporating high-intensity dryers in the web path or by moisturizing one or both sides of the web prior to its passing the decurling bars.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.