Patent ID: 6886310
Filing Date: 2005-05-03
Classification: B31B,B65B

Abstract:
1. A method of forming reclosable packaging bags using a continuously traveling film fitted with at least one closure tape ( 60 ), which extends transversely to a longitudinal travel direction of the film, wherein the method comprises; cyclically sealing the film with a set of heat-sealing jaws ( detecting a default in position of the tape ( and repositioning the film correctly in relation to the heat-sealing jaws when the sensor detects a default in the position of the tape, so as to eliminate drift due to the elasticity of the film, wherein the sensor comprises dual feelers that are juxtaposed in the longitudinal travel direction of the film, and wherein the repositioning is by repositioning means responsive to the detection of the default in the position of the tape by the at least sensor.