Influence of Drying Conditions on the Wrinkling of Fabrics

다국어 초록 (Multilingual Abstract)

Wrinkles are formed in fabrics because of mechanical action and the physicochemical effects of water and heatduring washing and drying processes. This study aims to identify the main drying conditions that affect the wrinkles byevaluating the smoothness appearance of various fabrics, under four different sets of drying conditions. It was found that thewoven fabrics that had a low degree of freedom of yarn movement wrinkled more easily than the knit fabrics. Furthermore,depending on the hydrophilicity of the fibers, the degree of wrinkling was influenced by the temperature and humidity duringthe drying process. In particular, synthetic fibers with low glass transition temperatures (Tg) wrinkled more significantly athigh drying temperatures. Wrinkles generated during the washing process could be partially removed by mechanical forceduring tumbling under the Heater and Heatpump(t) conditions. However, under the Heatpump(h) and Line Dry conditions,they tended to be fixed in drying processes with less or no applied mechanical force. Repeated washing and drying resulted inan increased degree of wrinkling in the hydrophilic laundry, particularly in the wool fabric, due to shrinkage and felting. Itcan be concluded that the drying temperature and mechanical force affect the formation of wrinkles. Wrinkle formation insynthetic fibers can thus be mitigated by controlling these factors, in consideration of the glass transition temperature of thefibers.

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