Features: 1) This machine is suitable for making laminated film of three-side sealed bags, central-sealed bags, standing up bags, and zipper bags ( the parts for standing-up and zipper bag making is optional) 2) Main motor mechanical transmission system: Panasonic\'\'s electrician transducer 3) Gear-controlling speed reducer motor 4) Main machine frame: double coupling shaft, beam structure 5) Pneumatic tension controller 6) Film-traction parts by air cylinder, independent controlling for both sides 7) Pneumatic cutting, convenient to install and adjust cutter 8) Doubling heat-sealing and bag-length, up to 6 times