This machine adopts once-through forming technique,with high efficiency and excellent product quality.This machine has such features as scientific and reasonable structure design,smooth and reliable running and convenient operation and maintenance. Polyethylene air-cushion film(also called polyethylene bubble film),which is divided into two kind:orinary polyethene air-cushion film and composite polyethylene air-cushion film,is a kind of packing material which has been widely used at present.It not only has good cushion effect,shock resistance and heat-sealing performance,but also has the advantage of good corrosion resistance and transparency,etc.So it has been widely used for packing,such sa,post parcel,precise instrument,bicycle,polyurethane furniture,etc.