air bubble film making machine, can extruder bubble film single screw machine (to make 2 layers bubble film)double screw machine (to make 3 ... machines are for the application of producing bubble film and bubble film packaging products. The bubble film is made of LDPE material. ... ratio28:128:128:1Air bubble size6mm×3.2mm, 10mm×3.4mm, 25mm×10mm, 30mm×10mmWeight5.5T4T2.8T air bubble film making machine