The different application material have different required sealing and shrinking data. More details, pls see the below info about
POF Heat Shrinkable Film Thermal Shrink Wrapping Packing Machine with Movable Wheel and Visible Window.PVC: PVC thickness range from 0.02 to 0.06mm, heating time is around 5-10s, shrink temperature is 110-130 degree.
PP: PP thickness range from 0.02 to 0.04mm, heating time is around 6-12s, shrink temperature is 130-170 degree.
POF: POF thickness range from 0.03 to 1.1mm, heating time is around 8-16s, shrink temperature is 130-170 degree.