Abstract: Using water as a flotation agent, PVC film was separated from a mixture of PVC, PE,and PP films. The effect of flotation liquid density, temperature, solid content, content of wetting agent, stirring speed, and separation time on the recovery of PVC were studied. It was found that the optimal conditions were: flotation liquid density 1.04 g/cm3, separation temperature 30 ℃, the ratio of solid to liquid 1:50, content of wetting agent 0.2 wt %, stirring speed 50 r/min, the separation time 8 s, by which the recovery of PVC reached 98 %.

Key words: waste plastic film, separation, film