Patent ID: 7147737

Claim:
A banderoling machine for banderoling a material with film rolls arranged on both sides of a feed table, whose film webs are joined together by a seal seam to form a film curtain which passes through a slot in the feed table, wherein the material to be banderoled is pushed towards the film curtain, the film curtain is placed around the material to form a loop and the loop is tightened by means of a tensioning device, which temporarily clamps at least one of the film webs, and the loop is heat-sealed by means of a heat-sealing device and separated from the remainder of the film curtain, wherein at least on one side of the feed table, there is provided a film changing unit ( 7 ) comprising at least one supply film roll ( 8 ) of a supply film web and at least one working film roll ( 9 ) of a working film web, wherein the working film web ( 3 ) and the supply film web ( 22 ) guided through a film sealing unit ( 10 ), wherein the film sealing unit ( 10 ) comprises two separating heat-sealing devices ( 36 , 37 ), each adapted to produce a pinch-separating seam wherein each of the two separating heat-sealing devices ( 36 , 37 ) comprises assemblies separated from one another by a film slot ( 18 , 19 ), the assemblies comprise a heating element ( 43 , 44 ) and a countertool ( 39 , 40 ), wherein two appropriately spaced clamping strips ( 51 , 52 ), are provided on the heating element ( 43 , 44 ) or on the countertool ( 39 , 40 ) wherein a separating edge ( 45 , 46 ) is provided between the spaced clamping strips ( 51 , 52 ) either on the heating element ( 43 , 44 ) or on the countertool ( 39 , 40 ), and wherein at least one of the two assemblies is movable onto the other, to produce the pinch-separating seam between the supply film web and the working film web and between an excess portion of the supply film web ( 34 ) and a remainder portion of the working film web, in one working process, wherein a central component ( 16 ) is provided between the heat-sealing devices ( 36 , 37 ) in a substantially side-by-side relationship with one film slot ( 18 , 19 ) located between each of the heat-sealing devices and the central component, wherein the supply film web ( 22 ) is guided through the two film slot ( 18 , 19 ) and partly loops around the central component ( 16 ), and wherein the working film web ( 3 ) is guided through one of the two film slots ( 18 , 19 ) and is substantially parallel to the two film slots ( 18 , 19 ).