Apparatus for producing recloseable bags
US6422987B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1998 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Nov 19, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B70/81
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus is provided for producing recloseable bags (10). The recloseable opening (32) of the bags is surrounded by mutually opposite halves (20, 22) of a recloseable strip, these halves being firmly welded to mutually opposite bag walls (12, 14) and, at the ends, being welded to the two lateral longitudinal sealed seams (16) of the bag (10). The apparatus is characterized, on the one hand, by at least one inner sealing jaw (72) between the two bag walls (12, 14) in the crossover region of the longitudinal sealed seam (16) and recloseable strip (18), and, on the other hand, by at least one counter-jaw (82, 84) on the outside of a bag wall (12, 14). The counter-jaw is located opposite the inner sealing jaw (72) such that, between the inner sealing jaw (72) and the counter-jaw (82, 84), it is possible to position a bag wall (12, 14) by way of its crossover region and to press flat the relevant half (20, 22) of the recloseable strip (18) and weld the same to the bag wall (12, 14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.