Device for varying the opening between the welding element and t

Details Device for varying the opening between the welding element and t Device for varying the opening between the welding element and t

1988-05-31

1990-02-27

Culver, Horace M.

Package making

Progressively seamed cover web or web folds

With closing of web between package units

53373, 156512, B65B 5130, B65B 912, B65B 906

Patent

active

049034600

ABSTRACT:
In machines for the continuous packaging of products inside a film of a plastic material, folded above the products, so as to form a continuous tubular wrapping, a device for changing the opening between the welding element and the counter-welding element permits the operating distance between the welding elements to be changed as a function of the height of the products in course of packaging, thus ensuring the highest packaging speed for both low- and high-thickness products.

REFERENCES:
patent: 2951325 (1960-09-01), Podlesak et al.
patent: 3237371 (1966-03-01), Gerlach
patent: 3287199 (1966-11-01), Virta
patent: 4019307 (1977-04-01), Balestrazzi
patent: 4553377 (1985-11-01), Klinkel
patent: 4611455 (1986-09-01), Aiuola et al.

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