Patent ID: 6689180
Filing Date: 2004-02-10
Classification: B65B

Abstract:
A hot air flow control device for a heat-shrinking packaging machine, comprising:at least two air supply devices spaced from each other to define therebetween a channel adapted to allow an article to be packaged to pass, each air supply device having a surface in which at least one row of openings is defined and arranged along a first direction for supplying hot air toward the article; and a blocking bar movably mounted to the surface of each air supply device, the blocking bar being movable with respect to the surface in at least a second direction transverse to the first direction to selectively and partially block the openings for controlling hot air flow through the openings; one of the surface and blocking bar having formed therein at least one elongate guide slot, and the other of the surface and blocking bar having formed thereon at least one positioning pin maintaining slidable engagement with the guide slot.