Device for transversely stretching web
US5826314A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 3, 1997 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Dec 3, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C55/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A device for transversely stretching a web includes a pair of pulleys arranged in the substantially same plane and rotating in the opposite directions to each other and a pair of belts running around the pulleys, respectively. The web is widthwise stretched, by gripping opposite side edges thereof by the pulleys and the belts and conveying the web in a divergent manner. At least one pair of pressing rolls are provided at an inclination relative to the belts for pressing the opposite side edges of the web onto the belts prior to being gripped between the pulleys and the belts. According to this structure, a device for transversely stretching a web is realized which is capable of effectively preventing the web from being dropped from the grip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.