BAG MAKING MACHINE, METHOD OF BAG MAKING AND PERFORATOR FOR ROTARY BAG MAKING MACHINE Russian patent published in 2013 - IPC B31B1/14 B65B61/10 B31B49/04 

FIELD: process engineering.

SUBSTANCE: rotary drum comprises, at least, one sealing plate with first sealing zone and lower strength zone adjoining the former. Said lower strength zone may be composed of heated perforator or may be arranged to make auxiliary sealing zone. Power supply with adjustable voltage or power may be connected to heating conductor to operated in either pulse mode or feedback mode. Heating conductor may be NICr wire, have an intermittent contact with tape and be arranged insert. Said lower strength zone of permanent or variable size makes the bag separation zone or includes heating tape, toothed blade, row of needles, power source or vacuum source. Soldering zones may include temperature zones, cartridge-type heaters, cooling air, heating air, or source of ultrasound, superhigh frequency or ray power sources.

EFFECT: improved design.

17 cl, 28 dwg