Journal Textile Coloration and Finishing Year / Vol., Issue, Month 2021 / V.33,no.3,Sept Title Physical Properties According to the Covering Process and Heat Treatment Condition of the Thermoplastic Polyetherester Elastomeric Fibers Authors Jin Oh Kim, Young Su Kim, and Seong Woo Park Institution/Affiliations Korea Textile Development Institute Pages/Total page pp.120 ~ 130 / 11 Language Korean Abstract The condition of covering process using thermoplastic polyetherester elastomeric fibers(TPEE) was established. Two types of core yarn(TPEE, Spandex) and one type of effect yarn(PET) were used as materials to confirm the change in physical properties of covering yarn under various covering conditions. In addition, the effects of the treatment temperature on the elongation at break of covering yarn after heat treatment was analyzed. Through this analysis, it was confirmed that the elastic recovery of TPEE which is used as the core yarn was increased with the draw ratio, but decreases when it exceeds 1:2.5. And the elongation at break of the covering yarn could be increased by increasing the twist per meter of it. Additionally, it was confirmed that the elastic recovery of TPEE which is used as a core yarn, could be increased by applying heat treatment. Keywords polyetherester, thermoplastic, elastomeric fiber, elastic recovery, stretch Download   Reference http://koreascience.or.kr/journal/OSGGBT.page?&lang=ko