The cartridge has a single bottleneck opening at a lower end which is initially sealed by a breakable seal in the form of a film layer of foil, coated paper stock, plastic or the like.

This paper gives a study on the special coatings that can be coated directly on the surface of the PP plastic without complex pretreatment.

This machine was fixed the upper and lower tooth for synchronized feeding units, it is most suitable for the paper bag and woven bag coated with plastic film.