Welding machine for thermoplastic web
US4207136A · kind A · utility
6Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1978 |
| Grant date | Jun 10, 1980 |
| Priority date | — |
| Expiry date | Dec 11, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2160/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A displacement device in a thermoplastic web welding apparatus withdraws the leading edge of the web from the welding apparatus during pauses in feeding and/or production to prevent melting and sticking of the leading edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.