method and device for the manufacture of kunststoffbeuteln with angeschweissten pressure or gleitverschlussbaendern

摘要

1,194,871. Making bags; seaming non-metallic sheet material. WINDMOLLER & HOLSCHER. 1 June, 1967 [1 June, 1966], No. 25460/67. Headings B5D and B5K. Plastics bags with pressure or slide fastener strips joined to the bags by heat-sealing, are made by intermittently feeding fastener strips 7 which have already been hooked together to the spread apart edges of the two ply sheeting web 1, heat sealing the strips to the web at station 12 having pulse heated heat sealing jaws, whereafter one or more further advancing steps are performed and the sheeting web is thereafter subjected at a station 17 to transverse severing and heat sealing whereby the individual bags are severed and closed. The duration of the closed position of the jaws and the heating pulses are controlled by separate liners and the heating is terminated before the jaws are opened. If the fasteners are pressure strips they are heat sealed to each other at a station 13 the weld being then moved to a cooling station 14.