Thermal lid sealing method and apparatus
US5032213A · kind A · utility
24Cited by
18References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Nov 20, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus are disclosed for heat sealing two thermoplastic parts by clamping the parts together with a cooled clamp so that the edges of the parts are exposed and melting the edges together by contacting them with a hot seal head wherein a layer of a protective material is interposed between the hot seal head and the parts to be sealed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.