Three Side Sealing Machine USE The Three Side Sealing Bag Making Machine is applicable to the production of twofold or multifold three-margin-sealed multiple membrane bags which take BOPP PET CPP PE nylonaluminum foil, and paper as basis materials. The equipment is easy to run and its product is smooth in surface and beautiful in shape, with high thermal sealing intensity and high production speed, it is the ideal packing bag manufacturing device.