Method for forming zippered thermoformed packages
US6820394B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Mar 25, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B7/164
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of forming, filling and sealing a reclosable package 46. A thermoform film 14 is fed toward a forming station 18. A zipper length 20 having mated interlocking profiles 21 and 23 and a slider 28 is fed onto the thermoform film transverse to the feeding direction of the film and one of the profiles is sealed to the film. A pocket 18 is thermoformed in the film and product 32 is fed into the pocket. A cover sheet 34 is then fed over the thermoform film covering the pocket 18 and second profile 23. The cover sheet 34 is sealed to the thermoform film at seal lines 38 along the pocket, to the second profile and above the zipper to form a filled package and the bottom seal 44 for the next package.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.