Zippered film plural sheet strip guide system and method for zippered film for form, fill and seal package making machines
US5072571A · kind A · utility
51Cited by
12References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1990 |
| Grant date | Dec 17, 1991 |
| Priority date | — |
| Expiry date | Feb 26, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B2220/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Plural strips of package making sheet material are directed toward a forming and filling tube in a form, fill and seal machine for making packages, and the strips are guided into cooperative relation along the tube for joining of the strips into tubular form about the tube. In a preferred arrangement, the strips are derived by slitting a continuous single sheet of package making material, provided with complementary zipper profiles along the slit margins of the strips. A three-bar guidance system is provided for guiding each of the strips cooperatively to the forming and filling tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.