Folding and packaging system

Details Folding and packaging system Folding and packaging system

1985-05-22

1986-11-25

Coan, James F.

Package making

With contents treating

Reshaping

493444, 493450, B65H 4512

Patent

active

046240950

ABSTRACT:
A folder for sheets of pliable material, including bags, includes sets of conveying ropes and rollers to move the sheet from in-feed to discharge. One or more folding stations are provided, each of which includes a pneumatically-operated anvil with air holes which serves to create a fold in the material and change its direction of movement through the conveyor system. The final size of the product is determined by the number of folding steps employed. Control of the location of the fold, and hence the quality of the product is accomplished by control of the conveyor speed. An interrupt section is provided so that individual sheets of pliable material can be removed from perforated strips, e.g., in this production of garbage bags. Folded product is discharged into a pair of receiving trays, from which the product can be loaded into boxes or other packaging. In the preferred embodiment the folded product is alternately discharged through gates in the bottom of the trays, the discharge being assisted by an elongate ram which provides another fold to the stack and permits removal of the product from packaging in a one-at-a-time fashion.

REFERENCES:
patent: 2291487 (1942-07-01), Myers
patent: 2645476 (1953-07-01), Wood et al.
patent: 3363897 (1968-01-01), Northern et al.
patent: 3523400 (1970-08-01), Daily
patent: 3905593 (1975-09-01), Behn
patent: 3918698 (1975-11-01), Coast

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