Patent ID: 6602174
Filing Date: 2003-08-05
Classification: B29C,B31B

Abstract:
A method of sealing a drawtape to a hem of a thermoplastic film structure, comprising:providing the thermoplastic film structure with a panel, the hem, and the drawtape, the hem being formed along one end of the panel, the drawtape being housed within the hem; conveying the film structure to a stationary heat sealer, the stationary heat sealer including a stationary heated block and a hot air blower spaced from the heated block, the hem being disposed between the heated block and the hot air blower; momentarily stopping the film structure at the stationary heat sealer; and while the film structure is stopped, blowing heated air from the hot air blower onto the hem to force the hem against the heated block, thereby sealing the drawtape to the hem.