Patent ID: 6701696
Filing Date: 2004-03-09
Classification: B65B

Abstract:
A packaging machine using a heat-shrinkable film, comprising sealing means including heatable sealing blades, and a frame movable in a first section of the machine from a rest position to a sealing position for effecting peripheral sealing of a segment of said film around a package entering said first section, a tunnel disposed alongside the frame to receive film-wrapped packages from said first section means in said tunnel arranged for effecting circulation of air heated by electrical heating elements for effecting shrinkage of the sealed film on a package which is introduced into the tunnel, and means for detecting a condition associable with the presence in said first section of the machine of a product wrapped in a film to be shrunk, the detecting means upon detection of said condition producing an actuation signal for effecting temporary actuation of the hot-air circulation means.