APPARATUS FOR PRODUCING TRANSVERSE WELD SEAMS, TRANSVERSE SEVERING CUTS AND, RESPECTIVELY, TRANSVERSE LINES OF PERFORATIONS IN TUBULAR WEBS

摘要

1090-18 AN APPARATUS FOR PRODUCING TRANSVERSE WELD SEAMS, TRANSVERSE SEVERING CUTS AND, RESPECTIVELY, TRANSVERSE LINES OF PERFORATIONS IN TUBULAR WEBS The present invention relates to an apparatus for producing transverse weld seams and transverse severing cuts or transverse lines of perforations in a tubular or semitubular web of thermoplastic synthetic resin which is intermittently pushed and/or drawn forwards, comprising two cooperating pairs of feed rolls separated by a transverse welding device, and a cutting or perforating device. In order to attain the object of increasing production capacity of such equipment while still maintaining weld quality, the transverse welding device arranged between the two pairs of feed rolls comprises at least two pairs of welding jaws with a transverse alignment in relation to the web, which are spaced apart by at least the length of a bag or other workpiece as measured in the direction of movement of the web.