Film edge sealing device
US9499289B1 · kind B1 · utility
4Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2015 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Aug 14, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2701/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A film edge sealing device is disclosed herein which has a groove defining a base. The base of the groove of the edge sealing device is oriented at a skewed angle with respect to a longitudinal direction of the conveyor of the heat sealing machine. Edges of a thermoplastic sheet or two stacked layers of thermoplastic sheets are introduced into the groove of the edge sealing device and placed in contact therewith to both heat and melt the edges of the thermoplastic sheet(s) to form a bead and join the edges thereof to form an edge bead seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.