Process and apparatus for reclosable container stock
US4859259A · kind A · utility
49Cited by
7References
29Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1983 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Sep 23, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B70/8132
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process and apparatus for producing a reclosable container stock with adhered occludable closure strip portions, said apparatus comprising a rotatable lay-on roll having circumferential grooves therein, means to advance the closure strip portions to the lay-on roll, a rotatable casting cylinder positioned opposite the lay-on roll, means for extruding a molten plastic film onto the casting cylinder so that the film adheres to the closure strip portions, and means for cooling the resulting reclosable container stock with adhered closure strip portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.