Film sealing apparatus and method

Package making – Methods – Closing package or filled receptacle

Patent

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Details

53450, 53550, 533748, B65B 702

Patent

active

055378048

ABSTRACT:
A method of apparatus for heat sealing two portions of film associated with packaging of a product is based on bringing the two portions of film being joined together under pressure of mating sealing components, heating the juncture between the portions and during the time such pressure and heat is being applied, forcing one of the sealing components engaging the film to shift relative to the other of the sealing components in the direction of the seal whereby to improve the quality of the seal.

REFERENCES:
patent: 3473288 (1969-10-01), Nakamura et al.
patent: 3628306 (1971-12-01), Jacobson
patent: 4073116 (1978-04-01), Glover
patent: 4974824 (1990-12-01), Kinkel et al.
patent: 5463851 (1995-11-01), Nagai

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