Fill and seal machine for reclosable bags
US4790126A · kind A · utility
84Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1987 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Jun 29, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/723
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for form, fill, and seal operation using bag-making sheet material having complementary male and female reclosable profiles includes sheet guide and tensioning devices to ensure continuous, effective packaging. The inventive features address the presence of tracking problems in sheet feed using bag material having profiles and being of a laminated type, and serve to ensure wrinkle-free, acceptable sealing of bag edges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.