Label shrink oven

Details Label shrink oven Label shrink oven

B - Operations, Transporting

65

C

216/8

B65C 3/08 (2006.01) B29C 63/42 (2006.01) F26B 3/28 (2006.01)

Patent

CA 1254538

ABSTRACT An infrared heat tunnel with hot air circulation for heat shrinking wraparound labels on containers which are moved through the tunnel in an upright attitude on an open weave conveyor belt. The infrared heating is by electrical strip heaters along the sides of the tunnel and air is blown by blowers across these heaters to impinge on the sides of the containers. The air is drawn down through the conveyor belt since the inlet to the blowers is from beneath the conveyor. A vertical air curtain along each side of the first half of the tunnel is adjustable in length to effectively delay the skin shrinkage of the film-foam material of the labels in order to get wrinkle-free shrinkage of the film and underlying foam about the container wall and heel areas without bottle rotation.

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