Apparatus for treating and severing sections from intermittently fed webs

Apparatus for treating and severing sections from intermittently fed webs, preferably for welding pairs of handles onto the edges of semi-tubular webs of thermoplastic material and severing bags therefrom by transverse weld seams, comprising intermittent feeding means for the web, transverse severing means for severing sections from the web during standstill periods thereof, and treating means upstream thereof, characterised in that the upstream treating means (10, 11) extend over a length of web corresponding to several lengths of sections and carry out like processes on the eventual sections during a standstill period of the web, that between the treating means (10, 11) and the transverse severing means (8) there are two spaced intermittently driven pairs of feed rollers (3, 4;

• 6, 7) of which the upstream pair feeds the web during each feeding interval by a web length corresponding to the number of treated sections and the downstream pair feeds the web by one section length during feeding intervals of which the cycle is higher by the number of sections to be treated, and that between the pairs of feed rollers (3, 4;
• 6, 7) there are storing means (5) which store the web length fed by the upstream feed roller pair (4, 3) but not yet taken up by the downstream pair (6, 7).