Device for sealing two plies of film together, particularly for enclosing a foamable composition in a flexible container
US6550229B2 · kind B2 · utility
71Cited by
25References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2001 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Jan 20, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31D2205/0047
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A device for sealing two plies of plastic film together generally includes an electrically conductive heating element and a rotatable support cylinder having an outer, circumferential surface, the cylinder being positioned in abutting relationship with the heating element and capable of rotating against the heating element, which is in fixed position, along a predetermined contact arc such that less than a complete circumference of the outer surface of the cylinder is in contact with the heating element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.