Multi-function bubbles film, composite membrane units Performance: This machine adopts once-throgh shaping technique, this has high efficiency and excellent product quality. This machine set has features as scientific and reasonable structure design, smooth and reliable running and convenient aperation and maintenance . Ployethylene air-cushion film (also called polyethlene bubble film), Which is divided into two king; ordinary polyethylene air-cushion film and compoosite poly-ethylene air-cushion film, is a kind of packing effect, shok resistance and hert-sealing performance, but also has been widely used for packing, household wares, post precise instrument, bicycle, polyurethane furniture,etc.