Package making – Methods – Opening only
Patent
1995-11-13
1997-02-04
Sipos, John
Package making
Methods
Opening only
533816, 533861, B65B 4340
Patent
active
055986862
ABSTRACT:
A method and apparatus for exposing the contents of envelopes for removal in which a horizontal stack of envelopes is advanced towards the suction roller. The envelopes have previously been opened along a top longitudinal edge and two vertical side edges. As each envelope reaches the suction roller, it is caused to adhere to the roller by suction. The roller is subsequently rotated through approximately 90.degree. so that the leading panel of the envelope is "peeled" away from the contents and the envelope is lifted partially from the stack, permitting the contents to be withdrawn. The roller is subsequently turned in the opposite direction to eject the empty envelope downwardly.
REFERENCES:
patent: 3726454 (1973-04-01), Robbins
patent: 4295321 (1981-10-01), Dehart et al.
patent: 4376363 (1983-03-01), Russell
patent: 4866908 (1989-09-01), Kunne et al.
patent: 5134834 (1992-08-01), Hayduchok
Owen Tri-Cut Limited
Paradiso John
Sipos John
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