Web tension control apparatus and method
US6168108A · kind A · utility
10Cited by
14References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1998 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | Nov 20, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2511/21
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A web tension control and apparatus uses a lightweight dancer and a control system that detects web tension using the dancer position as well as downstream sensors to maintain a relatively constant web tension. The control system also adjusts the braking force to an unwind roll based on the diameter of the roll, allowing for greater web tension control. A two-phase braking system prevents the unwind roll from spilling excess paper into the production line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.