Apparatus and method for sealing and cutting thermoplastic straps
US4504353A · kind A · utility
11Cited by
5References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1984 |
| Grant date | Mar 12, 1985 |
| Priority date | — |
| Expiry date | Jan 27, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for heat sealing together layers of strap of thermoplastics material, wherein at least one thin flat electrical heating element is supported under tension and between the layers of strap and the layers of strap are pressed together with a fusing pressure by at least one resilient pressure pad. The heating element, a support for the heating element and the resilient pressure pad form a heating and fusing assembly which is moved in unison relative to the layers of strap so that in use, the heating element moves between the two layers of strap generally in a longitudinal direction thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.