Packing material feeding apparatus for vertical-type bag form-fill-sealing machine
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United States of America Patent
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Jan 7, 2003
Grant Date -
N/A
app pub date -
Jun 14, 2000
filing date -
Jun 16, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A packing material feeding apparatus for a vertical-type bag form-fill-sealing machine comprises a feeding device for feeding a web as a packing material along a filling tube at a constant velocity during a normal operation of the machine, and a controller for controlling the operation of the feeding device. When a filling operation of articles is absent, the controller reduces a web feeding velocity, and then accelerates the web feeding velocity to the constant velocity when filling of the articles is resumed afterward. The acceleration of the web is carried out using a period equal to or longer than a unit packing period which is required to produce one bag during the normal operation of the machine.
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