Apparatus for preventing creases in transverse sealing
US4589247A · kind A · utility
44Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1984 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Sep 12, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B9/2007
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention provides an apparatus for transversely stretching a film tube at a portion to be transversely sealed and preventing creases from occurring in the transversely sealed portion of the film tube when a product fed in the film tube is separated by a squeeze roll means into a specified amount for one pack and thereafter the film tube is transversely sealed. Butterfly arms which pivotally spread apart in a fan-like manner are used for the stretching means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.