Method for the manufacture of dunnage bag liners

Details Method for the manufacture of dunnage bag liners Method for the manufacture of dunnage bag liners

1975-03-31

1977-04-12

Coan, James F.

Advancing material of indeterminate length

By intermittent material-mover

Comprising material-moving roll

93 8VB, 93 33H, 226155, B31B 4100

Patent

active

040168050

ABSTRACT:
A method and apparatus for the manufacture of inflatable liners for disposable dunnage bags. The apparatus includes means for measuring and severing an indefinite length of flattened tubular plastic material into predetermined lengths, sealing the overlying layers at one end of each severed length, and cutting an opening in the wall of the tubular material suitable for receiving an inflation valve. The method includes severing preselected lengths of tubular bag material from a supply thereof, sealing one end of each length, and cutting an opening through the bag wall to receive an inflation valve.

REFERENCES:
patent: 2898995 (1959-08-01), Funnell
patent: 3214312 (1965-10-01), Gattrugeri
patent: 3244576 (1966-04-01), Swartz
patent: 3483801 (1969-12-01), Kupcikevicius
patent: 3802324 (1974-04-01), Izumi et al.
patent: 3813998 (1974-06-01), Lotto

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