Document Type and Number:
Japanese Patent JPS5535301
Kind Code:
B2
Abstract:
A method of providing a web of packaging material with a tear strip is disclosed. The method comprises the steps of feeding such a web of packaging material along a feed path, perforating the moving web in a zone extending substantially parallel to the longitudinal edges thereof, cutting a strip from a web of tear-strip material, applying the cut strip to one surface of the web of packaging material to overlie the zone of perforation, applying suction to the respective opposite surface of the web of packaging material to retain the cut strip against said one surface, and bonding the cut strip to the web of packaging material. Advantageously, the bonding step comprises the application of heat to weld the cut strip of tear-strip material to the moving web of packaging material. Also disclosed is a device for carrying out the method. The device comprises feeder means to feed such a web of packaging material along a feed path, perforator means to perforate the moving web of packaging material in a zone substantially parallel to the longitudinal axis thereof, cutting means to cut a strip from a web of tear-strip material, applying means to apply the cut strip to one surface of the web of packaging material to overlie the zone of perforation, means for applying suction to the respective other surface of the web of packaging material to retain the cut strip against said one surface, and bonding means to bond the cut strip to the web of packaging material.
Application Number:
JP12741173A
Publication Date:
September 12, 1980
Filing Date:
November 14, 1973
Export Citation:
International Classes:
B65D65/02; B31B1/90; B65B61/18; B65D75/66; B65H39/14; H01J40/00; H01J43/04; H01J43/28