Side sealing mechanism for a packaging machine

Details Side sealing mechanism for a packaging machine Side sealing mechanism for a packaging machine

1980-09-12

1983-04-19

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Control means energized in response to activator stimulated...

Responsive to work material, the product or means engaging...

493 34, 493197, 493208, B31B 110, B31B 164

Patent

active

043804462

ABSTRACT:
Heat sealing bars are spaced circumferentially around a rotatable drum and seal together two face-to-face strips of material as the strips are drawn continuously around the drum. The sealing bars are automatically moved radially inwardly and outwardly to change the circumferential distance between the bars and the effective diameter of the drum and thereby keep the bars in register with printed material on the strips.

REFERENCES:
patent: 2780275 (1957-02-01), Rusch et al.
patent: 2814484 (1957-11-01), Stobb et al.
patent: 3230687 (1966-01-01), Nutting et al.
patent: 3500726 (1970-03-01), Lense
patent: 3545166 (1970-12-01), Johnson et al.
patent: 3553934 (1971-01-01), Johnson et al.
patent: 3943683 (1976-03-01), Kovacs et al.
patent: 4170170 (1979-10-01), Beasley et al.
patent: 4305240 (1981-12-01), Grevich et al.

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