High speed packaging group and packaging machine equipped with such group
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United States of America Patent
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Dec 27, 2011
Grant Date -
Sep 10, 2009
app pub date -
Feb 25, 2009
filing date -
Mar 10, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A packaging group that packages products at a high speed when the products are fed in succession in accordance with a predefined and variable pitch is provided. The packaging group includes a conveyor of the products, at least one roll of at least one plastic film, a feed mechanism that feeds the at least one plastic film from the at least one roll respectively atop and underneath the products substantially upon exiting the conveyor, a counter-welder belt downstream of the conveyor which receives the products covered on their upper and lower parts with the at least one plastic film, and a transverse welder device at the counter-welder belt. The transverse welder device includes a rotating star-like structure equipped with at least three spokes provided at their tips with welder mechanisms cooperating one after the other in succession with the counter-welder belt, in order to weld together portions of the at least one plastic film between the products advancing on the counter-welder belt.
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