FIELD: packing.
SUBSTANCE: proposed method provides adequate sealing of weld seam between neck member and bag to prevent leakage of liquid. Method includes thermowelding, thus connecting neck member, formed from preliminarily heated synthetic polymer, with bag made from flexible film. Method consists of stage of preliminary heating for softening synthetic polymer of neck member in part to be welded to bag which is part of neck member with protection of synthetic polymer of neck member on end part of bag, which is end part of neck member, from softening at preliminary heating. Method includes also stage of interdiction of preliminary heated neck member into hole of bag and its compressing by thermowelding mould for welding neck member part in said hole.
EFFECT: provision of liquid-tight sealing.
7 cl, 13 dwg
