Heat shrink testerAlso known as heat shrink performance tester, heat shrink tester, film heat shrink tester, heat shrink rate tester, film heat shrink tester, etc., it is suitable for testing the heat shrink performance and dimensional stability of various films, heat shrink tubes, medicinal PVC hard sheets, backboards and other materials in liquid media at various temperatures. The principle of its detection is to imitate the production conditions (set the test conditions, namely temperature and time), place the sample, calculate the thermal shrinkage rate through the thermal change before and after the test, and determine whether the material properties are qualified.