Patent ID: 6862867
Filing Date: 2005-03-08
Classification: B29C,B65B,Y10T

Abstract:
1. A device for sealing thermoplastic film, which comprises: a platen with an upper surface; a vacuum chamber cover including a lower rim; a vacuum chamber including a closed position with said cover lower rim engaging said platen upper surface and an open position with said vacuum chamber cover separated from said platen; a sealing support assembly mounted on said upper surface of said platen and adapted to receive thermoplastic film thereon; a sealing bar assembly mounted on said vacuum chamber cover and including a heated sealing bar and a heat sink plate positioned in proximity to said sealing bar in a thermal exchange relationship therewith; a heat source associated with said sealing bar and adapted for heating said sealing bar; and said sealing bar assembly being movable between a raised position disengaged from said thermoplastic film and a lowered position engaging said thermoplastic film received on said sealing support assembly.