Device for welding and parting thermoplastic foils
US3982991A · kind A · utility
32Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1974 |
| Grant date | Sep 28, 1976 |
| Priority date | — |
| Expiry date | Sep 26, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1313
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Device for welding and parting thermoplastic foils to form bags or the like, having a pair of heated opposing tools arranged to close against foils introduced between them. The foils are welded and parted along a compression line formed between a compression edge of one tool and a hard, wear-resistant, but resilient surface of the opposing tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.