Simply speaking, the basic working principle of vertical pouch packing machine start with a large roll of film, form it into a pouch shape, fill the pouch with product, and seal the pouch edge, they all in a vertical fashion, that is vertical form fill seal.

Working principle of tube type vertical pouch packing machine

-vertical pouch packing machine is prepared by loading the appropriate film roll.

-film winds through a series of rollers and is shaped into a tube.

-tube is closed at the bottom by clamps creating the bottom of the bag.

-raw material is dropped into the half formed bag.

-bag is sealed at the top.

-seal forms the bottom of the next bag.

-bottom seal is cut in the middle separating the bag from the next one.

Working principle of vffs machines collar types

-film from reel made into a tube over forming shoulder.

-longitudinal seal made.

-bottom of tube closed by heated crimped jaws which move downwards drawing film from reel.

-predetermined quantity of product falls through collar into pouch.

-jaws open and return on top of stroke.

-jaws partially close and ‘scrape’ product into pouch out of seal area.

-jaws close, crimp heat seal top of previous pouch and bottom of new one.

-crimp sealed container cut off with knife.