Abstract
Long flexible materials such as plastic film are called web, which are made by Roll to Roll producing system. In this producing method web is often wound in the shape of roll to ease handling and storage after coating. However, if environmental temperature changes during storage or handling, wound roll defects which lead to the function degradation could occur. Wound roll defects are influenced by thermo-viscoelasticity of web. This paper presents thermo-viscoelasticity characterization of wound roll by tensile creep test and compressive creep test. From experimental result, it is confirmed that creep compliance in circumferential direction is dependent on temperature and circumferential stress. On the other hand, creep compliance in radial direction is strongly influenced by radial stress, but it is lightly affected by temperature.
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