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| Testrite yarn shrinkage tester This machine was originally designed in conjunction with the Tyre Technical Division of Dunlop Rubber Co. Ltd., to determine the shrinkage of tyre cord yarns at closely controlled temperatures. It has since been modified to enable similar tests to be carried out on 1" wide strips of fabric, as well as yarns, mono-filaments etc. Samples under test are exposed to the controlled air. Temperatures between two 10" wide heated platens, and shrinkage per cent is indicated on a scale. Residual shrinkage can be ascertained by removing the sample from the heated zone and allowing it to cool. A.S.T.M. Designated No. D4974-89. Temperature range is adjustable from ambient to 250°C.
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