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There is no standard available to determine the recovery time of viscoelastic (memory) foam. Viscoelastic foam measurements have a complex structure. The reason for this is that the viscoelastic property does not remain constant. It tends to deteriorate over time in low-index products. The most appropriate method applied to determine the recovery time is the finger test. In this test, the foam sample of 5.08cm * 5.08cm * 2.54cm dimensions is compressed with a finger down to 5mm thickness. Simultaneously with the start of the finger being withdrawn, the stopwatch is started and the total time elapsed until the sample reaches at least 95% of its original height is measured. This duration is called the recovery time.
Birlik Sünger Kimya San. ve Tic. A. Ş. was established in Eskişehir in 1987 to produce various types of foams for the furniture, mattress, cleaning, and textile industries.
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