Packaging machine for forming free-standing pouches
US5830118A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1995 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Sep 15, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2160/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Longitudinally spaced pairs of laterally spaced openings are formed in a web of material prior to the web being folded into a pouch having a gusset bottom, the holes enabling the side panels of each pouch to be heat-sealed directly together at the side margins of the pouch and in the area of the gussets. To enable the lateral spacing between the openings of each pair to be easily changed and to enable the openings to be located extremely close to the longitudinal centerline of the web, the openings are formed by punches supported by separate punch frames which may be independently adjusted in a direction laterally of the web. The punch frames also are adjustable relative to one another in a direction longitudinally of the web in order to enable the machine to make pouches of various widths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.