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Shrinkage Testing


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Shrinkage Testing

Shrinkage test, known as linear thermal shrink test or free shrink test, is used for analyzing the effect of temperature on heatshrinkable films made from polyethylene, ethylene copolymers and their mixtures.


Basically, shrinking force, contracting force and shrinking ratio can be measured in such determination.

Labthink Shrinkage tester conforms to the multiple national and international standards:

  • ASTM D2732 - Standard Test Method for Unrestrained Linear Thermal Shrinkage of Plastic Film and Sheeting
  • ISO 14616 - Plastics -- Heatshrinkable films of polyethylene, ethylene copolymers and their mixtures -- Determination of shrinkage stress and contraction stress
  • DIN 53369 - Testing of plastic films -- determination of the shrinking stress
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RSY-R2 Film Free Shrink Tester is designed for the heat shrinkage test and size stability test of films, heat shrinkable pipelines, medical PVC sheets, back sheets and other materials in liquid medium at various temperatures.


This instrument conforms to the following standards:
GB/T 13519, ASTM D2732

  • Digital P.I.D. temperature control technology ensures the preset temperature to be reached rapidly without any fluctuation

  • The instrument is heated through fluid medium, which could provide the stable test environment

  • Automatic timer function to efficiently guarantee the accuracy of test data

  • The instrument is controlled by micro-computer with LCD, PVC operation panel, and menu interface

  • Standard clamp wire mesh support could make the test done smoothly


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