Method and apparatus for detecting possibly defectively-sealed b

Details Method and apparatus for detecting possibly defectively-sealed b Method and apparatus for detecting possibly defectively-sealed b

1981-11-04

1984-06-26

Culver, Horace M.

Package making

Methods

Enclosing contents within progressively formed web means

53493, 53 55, 53 65, 53551, B65B 5706

Patent

active

044558104

ABSTRACT:
A method and apparatus are disclosed herein for detecting possibly defectively-sealed bags and for preventing said bags from being filled. A sensor is provided to develop a first signal upon detection of a defect in a line of adhesive on flexible bag-forming material moving past the sensor. The first signal is used to generate an output signal at a time corresponding to the time when the defect-containing portion of the bag-forming material has moved from the sensor into position to be filled with product. Preferably, said filling position is located a plurality of bag lengths downstream from said sensor.

REFERENCES:
patent: 2949714 (1960-08-01), Davis
patent: 3326097 (1967-06-01), Lokey
patent: 3359703 (1967-12-01), Quaadgras
patent: 3409198 (1968-11-01), Peterman, Sr.
patent: 3678276 (1972-07-01), Lampi et al.
patent: 3967994 (1976-07-01), Langberg
patent: 4077308 (1978-03-01), Scully
patent: 4189335 (1980-02-01), Evans et al.

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