Package making – Selective or alternate supply of plural covers and/or plural...
Reexamination Certificate
2009-02-25
2011-12-27
Gerrity, Stephen F (Department: 3721)
Package making
Selective or alternate supply of plural covers and/or plural...
C053S550000, C053S553000, C053S374600
Reexamination Certificate
active
08082721
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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Ballestrazzi Aris
Tassi Lamberto
Gerrity Stephen F
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
SITMA S.p.A.
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