Bag gripper and spreader for form, fill and seal bagging machine
US4768330A · kind A · utility
15Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1987 |
| Grant date | Sep 6, 1988 |
| Priority date | — |
| Expiry date | Jul 30, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7128
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
For use on a form, fill and seal bagging machine a left side bag gripping member and a right side bag gripping member are located in association with a movable component of the bagging machine as, for instance, the head seal. The bag grippers contact and grip the left and right respective sides of a bag and spread these sides apart from one another just prior to formation of a cross seal on the bag by the head seal. This insures that the heat sealable film utilized on the machines is not puckered or pinched by the head seal therefore leading to a defective seal between the front and rear films forming the bag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.