Apparatus for wrapping a generally cylindrical article in a ther

Details Apparatus for wrapping a generally cylindrical article in a ther Apparatus for wrapping a generally cylindrical article in a ther

1989-02-28

1990-03-06

Coan, James F.

Package making

With means responsive to a sensed condition

Of individual contents or group feed or delivery

53168, 53228, 53553, 53389, B65B 1106, B65B 5900

Patent

active

049054570

ABSTRACT:
A machine for wrapping cylindrical articles in a thermally weldable web has an automatic changeover system for webs of different widths in response to the detection of articles of different lengths. The system automatically guides the free end of a new web downwardly by a deflector connected to the upper jaw member of a double-welding system in which pairs of electrodes are energized to form two seams when successive articles are to be wrapped with the same web but where a new web is to be used, only a single seam is formed and the clamped end of the previously used web is cut away while the balance of the previously used web is rolled up again.

REFERENCES:
patent: 3776081 (1973-12-01), Becker
patent: 3815313 (1974-06-01), Heisler
patent: 4047359 (1977-09-01), Gronebaum
patent: 4075815 (1978-02-01), Carver, Jr. et al.
patent: 4167841 (1979-09-01), Camp
patent: 4413463 (1983-11-01), Lancaster

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