Method and apparatus for controlling the advance of a wrapping f

Details Method and apparatus for controlling the advance of a wrapping f Method and apparatus for controlling the advance of a wrapping f

1990-12-28

1991-11-26

Culver, Horace M.

Package making

Methods

Enclosing contents within progressively formed web means

53 51, 53550, B65B 4118, B65B 5704, B65B 920

Patent

active

050673076

ABSTRACT:
The positions of reference marks reproduced at given intervals on a wrapping film are detected by two optical units arranged in cascade. The supply of the film is controlled by the substantially continuous monitoring of its advance.

REFERENCES:
patent: 2977730 (1961-04-01), Ardner
patent: 3115999 (1963-12-01), Wythe
patent: 3140573 (1964-07-01), Buttolph
patent: 3762617 (1973-10-01), Matthis
patent: 4009551 (1977-03-01), Greenawalt et al.
patent: 4316566 (1982-02-01), Arleth et al.
patent: 4909018 (1990-03-01), Yamamoto

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