Sealing jaws for zippered foil or film in form, fill and seal machines
US5067302A · kind A · utility
34Cited by
11References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Jan 26, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/4322
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Sealing jaw structure and method for securing zippered package making foil or film material, comprising sealing jaws, one of which carries a pair of spaced material engaging ribs for not only sealing but also tightening the material between the ribs during sealing cooperation of the jaws. The tightening facilitates cutting of the material being engaged between the jaws by a knife carried reciprocably by the jaw that carries the ribs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.