Package making – Interrelated or safety controls
Patent
1976-04-30
1978-02-28
Simpson, Othell M.
Package making
Interrelated or safety controls
53 74, 53228, B65B 1126
Patent
active
040758150
ABSTRACT:
A method of, and apparatus for, wrapping packages of different sizes in thin-gage film and heat sealing the film includes transporting the package at the same horizontal level through the machine, pulling the film down across a horizontal in-line package path to form a vertical wall of film, pushing the article along the path forwardly into the wall of film, forming a tubular loop of film about the package with the loop open at the rearward end, severing the film, closing and sealing the rearward end of the loop, stretching, and/or underfolding the film, and heat sealing the package. The length of film needed to wrap packages of randomly different sizes is sensed and fed automatically. A trailing-end portion of over-lapping film of preselected fixed length, irrespective of the size of the particular package, is provided at the rearward edge of the package. This over-lapping trailing portion is heat sealed and then pushed against the back of, or under, the package.
REFERENCES:
patent: 2894363 (1959-07-01), Voogd
patent: 3150475 (1964-09-01), Schooler
patent: 3307326 (1967-03-01), Krebs
patent: 3488912 (1970-01-01), Christian
patent: 3503175 (1970-03-01), Marasso et al.
patent: 3513622 (1970-05-01), Timmerbeil
patent: 3816969 (1974-06-01), Zimmerman
patent: 3910005 (1975-10-01), Thimon et al.
Carver, Jr. Herbert K.
Chant Albert H.
Hall James F.
Hansen, Jr. Omar
Lord John G.
Franklin Electric Subsidiaries, Inc.
Simpson Othell M.
Sipos John
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