Apparatus for sealing a wrapper film sleeve
US6557322B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Apr 26, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/8221
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for sealing a wrapper sleeve includes a first peripheral surface rotating about a first axis and having a generatrix parallel to and at a maximum distance from, the first axis and a radius of curvature smaller throughout the circumferential surface length than the maximum distance. A second peripheral surface rotates about a second axis oriented parallel to the first axis. The first and second peripheral surfaces define a line of contact with the wrapper sleeve therebetween. The first and second surfaces rotate in synchronism and roll on one another effecting sealing of the wrapper sleeve as the wrapper sleeve is advanced. A device displaces the first axis relative to the second axis in a direction transverse to the advancing direction of the wrapper sleeve for effecting displacement of the line of contact in the advancing direction as the first and second surfaces rotate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.