Seal temperature control means for curtain-type wrapping machine
US3965333A · kind A · utility
8Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 1975 |
| Grant date | Jun 22, 1976 |
| Priority date | — |
| Expiry date | Jun 9, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1313
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Temperature control means for a curtain-type wrapping or banding machine to prevent excess ambient temperature thereon by employing switch-actuating means responsive to even very small changes in the expansion and contraction of the elongated heating element on the heater bar of the machine which co-acts with the anvil thereof to effect sealing of either a web or bands of thermoplastic synthetic resin material around various types of objects of various sizes and also re-constitute the web or bands into continuous form incident to severing the sealed web or bands from the supply material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.