Roller members for use in heat sealing apparatus

Details Roller members for use in heat sealing apparatus Roller members for use in heat sealing apparatus

B - Operations, Transporting

31

B

154/29.04

B31B 1/64 (2006.01) B31F 5/00 (2006.01)

Patent

CA 1106742

Abstract of the Disclosure Apparatus for heat sealing a thermally-sensitive material to a substrate material includes a frame, and a pair of internally heated shafts mounted fast on the frame. A roller member is rotatably mounted on each shaft, and is arranged to be heated by the heating element within the shaft. The rollers are rotated in opposite angular directions so that an object interposed at the nip will be translated therebetween. The facing peripheral portions of the roller members each have a sinusoidal cross-section, with the peaks of one roller member being aligned with the valleys of the other. The roller members are spaced from one another to provide a degree of frictional resistance with the materials to be bonded together. The cross-sectional configuration in the roller members serves to provide a plurality of ribbon- like seals between the materials, without propagating a bubble as such materials are passed between the roller members.

309713

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