Stretch stress relief for bag thermo-cross-seals in vertical for

Details Stretch stress relief for bag thermo-cross-seals in vertical for Stretch stress relief for bag thermo-cross-seals in vertical for

1990-03-15

1991-05-14

Culver, Horace M.

Package making

Methods

Enclosing contents within progressively formed web means

53551, B65B 920, B65B 6128

Patent

active

050144995

ABSTRACT:
A support is provided for filled bags in a form, fill and seal package or bag making machine to avoid stretch stress damage to the thermosealed top edge of the filled bag during the cross-sealing and pull-down action of cross-sealing and pull-down bars functioning below the lower or discharge end of the forming and filling tube of the associated form, fill and seal machine. The supoprt may comprise a supporting constant force spring biased finger or a platform plate similarly supported.

REFERENCES:
patent: 3027695 (1962-04-01), Leasure
patent: 3052074 (1962-09-01), Dreeben
patent: 3210907 (1965-10-01), Thurlings
patent: 3552081 (1971-01-01), Leasure
patent: 3738080 (1973-06-01), Reil
patent: 3815317 (1974-06-01), Toss
patent: 4079662 (1978-03-01), Puccetti et al.
patent: 4215520 (1980-08-01), Heinzer et al.
patent: 4378666 (1983-04-01), Onishi
patent: 4829745 (1989-05-01), Behr et al.

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