Lap seal

This is a vertical sealing method for pillow bags (stick bags) in which the inner surface is covered with the outer surface of the film.
The quality of the seal is inferior to that of Fin seal, but it is suitable for products that require low cost because it can fill a large amount of filler relative to the amount of film used.
In addition, it has a cylindrical shape with no protrusions, so it is easier on the hands of the user.