Packaging machine and method

Details Packaging machine and method Packaging machine and method

1992-05-01

1993-11-09

Culver, Horace M.

Package making

With contents treating

Reshaping

53526, 53527, 53570, 533737, 533747, 533749, B65B 122, B65B 124, B65B 126, B65B 708

Patent

active

052591727

ABSTRACT:
A packaging machine and method of packaging utilizing chains of interconnected pre-opened bags which are fed sequentially and one at a time to a load station. Bag tops are clamped against spreading horns by sensor equipped clamps which cause disablement of a bag filling mechanism unless a bag is properly located at the load station. A bag spreading and transfer mechanism spreads a loaded bag and transfers it to a bag closure station for sealing. The mechanism includes bag supporting structures for supporting the bag during loading transfer and sealing and for expelling air from the bag and compressing the contents prior to completion of the package. The method includes both the steps of expelling air and compacting the contents and the step of allowing the differential escape of oxygen from a package while retaining nitrogen therein.

REFERENCES:
patent: 3096081 (1963-07-01), Helm et al.
patent: 3488915 (1970-01-01), Delestatius
patent: 3983682 (1976-10-01), Scully
patent: 4174599 (1979-11-01), Callet et al.
patent: 4706441 (1987-11-01), Chervalier
patent: 5070674 (1991-12-01), Lerner et al.
patent: 5077958 (1992-01-01), Peppard et al.
EPO Appln. 90307435.9, Pub. No. 0413431A3.

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