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.

• 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.

• 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.