Turning panel flap of zipper-equipped package material
US4646511A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1985 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Oct 15, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B25/068
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A feed conveyor arrangement is disclosed for horizontally unwinding zipper-equipped sheet packaging material from a supply roll and turning back a flap portion of the sheet material for reception of product prior to delivery into a form, fill, and seal machine. The feed conveyor utilizes a special guide wheel device for maintaining the zipper, and hence the sheet material, in an aligned flow path and holding down the flap portion only adjacent the zipper. A subsequent flap turning wheel device turns the flap portion away from the remaining panel area of the sheet below the zipper line, pivoting the flap about the hold down area of the guide wheel device. The guide wheel device is in the form of skewed wheels acting on the upper surface of the flap at opposed sides of the zipper. The flap turning wheel device includes an offset wheel which applies both upward and horizontal forces to the upturned inner surface of the flap to open up the sheet material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.