Impulse sealer
US4359361A · kind A · utility
17Cited by
11References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1978 |
| Grant date | Nov 16, 1982 |
| Priority date | — |
| Expiry date | Jan 30, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/81422
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Layers of heat sealable material are pressed between opposed jaws, cut through, and simultaneously the edges along each side of the cut line are sealed using an improved impulse sealer and method wherein a narrow, internal cooling vein(s) or channel(s), defined near the working interface of the jaws, is cooled by a pressurized stream of refrigerated gas to provide forced cooling to the sealed edges during the cooling portion of the sealing cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.