Thermal shrinking performance is one important property of plastic films. Basically, there are three test methods for film shrinkage testing: Oil Bath Method (ASTM D2732), Drying Oven Method and Air Heating Method (ISO 14616). Currently, Labthink has two models of shrinkage testers based on Oil Bath Method (RSY-R2) and Air Heating Method (FST-02). You can ask us for details.