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This research aims to contribute to the development of eco-friendly car seats using hanji yarn by examining the flame-retardant treatment effect of two types of hanji yarn fabrics woven with polyester warp yarn and two different types of weft yarn: hanji- polyester blended yarn (76:24) and 100-percent hanji yarn, respectively. In terms of the flame-retardant treatment, NICCA FI-NONE PD-38 was used as the flame retardant with the concentrations of 10, 20, and 30 percent, and a flame resistance test was conducted in...