Automatic package machine, and wrapping film fusing and sealing

Details Automatic package machine, and wrapping film fusing and sealing Automatic package machine, and wrapping film fusing and sealing

1994-05-13

1995-08-29

Culver, Horace M.

Package making

Progressively seamed cover web or web folds

With closing of web between package units

533735, 533744, 156324, B65B 5126, B65B 906

Patent

active

054449642

ABSTRACT:
The object of this invention is to provide an automatic package machine comprises a roll of wrapping film, a film opener for opening the film, which is drawn from the roll, into such a shape that the film can wrap an article to be wrapped, a conveyer for introducing the article, which is to be wrapped, into the opening of the film opened by the film opener, and a sealing unit situated contiguously to a downstream end of the conveyer for sealing edge portions of the film opening. The sealing unit includes a heater body, a fusing and sealing blade projecting from one end of the heater body, being vertically adjustable solely or together with the heater body, and being penetrable into the edge portions of the film opening parallel to a travelling path of the film, and two pairs of upper and lower feed rollers situated upstream and downstream, respectively, of the fusing and sealing blade. The fusing and sealing blade has along at least its upstream side edge a cutting edge.

REFERENCES:
patent: 2883813 (1959-04-01), Shannon
patent: 2987107 (1961-06-01), Sylvester et al.
patent: 3462909 (1969-08-01), Anderson
patent: 3552088 (1971-01-01), Niwa
patent: 3765990 (1973-10-01), Histed et al.
patent: 4211599 (1980-07-01), Bolter et al.
patent: 4219988 (1980-09-01), Shanklin et al.
patent: 4680073 (1987-07-01), Brunner et al.
patent: 4858416 (1989-08-01), Monaghan

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