Heat station for a heat sealing system
US4641482A · kind A · utility
19Cited by
11References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1982 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Oct 6, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/94
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention includes at least one low mass flexible heat transfer member to which there is secured a plurality of electrical resistance paths, for each area of the material to be sealed during an excursion through the heat station. The electrical resistance paths are respectively connected to a power source, or power sources, to generate different quantities of heat respectively at different positions along the heat transfer member. The heat transfer member is flexible and is formed and disposed to push against sealable material to transfer heat thereto and cause said sealable material to be sealed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.