VACUUM DRUM, PARTICULARLY FOR A ROLL-FED LABELLING MACHINE, AND VACUUM DRUM PAD
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United States of America Patent
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Issued Date -
Jul 31, 2014
app pub date -
Jan 24, 2014
filing date -
Jan 25, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a vacuum drum for receiving a labelling material web that is operatively coupled with means for cutting the labelling material we into portions, applying an adhesive on the cut portions of labelling material and for transferring the glued portions to respective items to be labelled. The vacuum drum has a lateral surface having at least one section adapted to cooperate with the portions and delimited, at opposite angular ends, by respective front and back dumping pads. The lateral surface section having one or more panels defining a quasi-cylindrical surface; the front damping pad. and the at least one panel having a material such that the adhesion of the adhesive to the labelling material is greater than the adhesion of the adhesive to the material, and the cohesion of the adhesive being also greater than the adhesion of the adhesive to the material.
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