WERKWIJZE EN INRICHTING VOOR HET MAKEN VAN VOOR-INGESNEDEN EN TOT EEN ROL GEWIKKELDE TASSEN VAN KUNSTSTOFMATERIAAL.

摘要

The invention relates to reels of bags in which the perforation lines for separating the bags from the strip are composed of a series of perforations produced by cutting and of a series of perforations produced by hot punching. According to the invention, the method consists in simultaneously producing the two series of perforations using a single tool. One of the jaws of the device is composed of a small bar made from insulating material 16 carrying a heating resistance element 18 equipped with a toothing 18b. The resistance element 18 is connected electrically to a small bar made of conducting material 17 arranged in the extension of the small bar 16 and carrying a cutting toothed blade 22.