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THE EFFECT OF CAUSTICIZING, WASHING AND DRYING PROCESSES ON SHRINKAGE AND CREASE RESISTANCE PROPERTIES OF VISCOSE FABRIC | Tekstil ve Konfeksiyon | ISSN: 1300-3356
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THE EFFECT OF CAUSTICIZING, WASHING AND DRYING PROCESSES ON SHRINKAGE AND CREASE RESISTANCE PROPERTIES OF VISCOSE FABRIC
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[ Volume: 18 Issue: 3 / JULY-SEPTEMBER 2008 ]
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Özlenen ERDEM İŞMAL (Dokuz Eylül University, Turkey)
In this paper the effects of pretreatment and post treatments on the properties of viscose fabric were investigated. Effect of causticizing, continuous (open-width) and discontinuous (rope) washings, contact and convection dryings were assessed in terms of dimensional stability, whiteness, crease resistance and breaking strength properties. The crease resist finish was applied to enhance crease resistance and washing shrinkage properties. Results were evaluated by statistical analysis and it was tried to determine the tendency of relations among fabric properties. The crease resist finish enhanced dramatically crease recovery angles and washing shrinkage values. However dimensional stability especially in warp direction was not satisfactory and it needs to be supported by causticizing process. Causticizing has an improving effect on both crease resistance and also dimensional stability. It resulted in breaking strength loss that was not statistically significant. Discontinuous washing in rope form and convection drying were beneficiary on crease resistance. However this affected breaking strength negatively. It was identified statistically significant negative correlation between crease resistance, washing shrinkage and breaking strength. Although a positive and relatively lower correlation was detected between washing shrinkage and breaking strength it could not be established a statistically significant relation. It is possible to improve the dimensional stability and the crease resistance properties of viscose fabric through causticizing process without a significant breaking strength loss.
Keywords: Viscose, Cross-linking, Causticizing, Crease recovery angle, Washing shrinkage, Drying
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