Method and apparatus for producing a plastic container having a reclosable fastener
US4306924A · kind A · utility
22Cited by
10References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1980 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Mar 28, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B70/8132
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for producing a plastic container having occludable closure strips comprises a source for the closure strips, a rotatable casting cylinder having a pair of spaced apart circumferential grooves defined therein, a mechanism for advancing the closure strips to the casting cylinder, an extruder for casting a plastic film onto the casting cylinder so that it becomes connected to base portions of the closure strips, and a chill roll for receiving the combination of plastic film and closure strips to provide cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.