Abstract: Apparatus for manufacturing a bulky textured yarn from a thermoplastic multifilament yarn by applying a pressurized heated fluid in a condition of automatically controlling the operating characters of the texturing operation. During the steady operational condition of manufacturing the bulky textured yarn, the yarn tension is continuously detected in a drafting zone between a texturing device and a winding device, and the operating characteristics, such as surface temperature of the heating roller and, temperature of the pressurized heated fluid supplied to the texturing device which affect the shrinkage of the processing yarn passing through the texturing device are automatically adjusted so as to control the yarn tension in the drafting zone.

Abstract: Apparatus for manufacturing a bulky textured yarn from a thermoplastic multifilament yarn by applying a pressurized heated fluid in a condition of automatically controlling the operating parameters of the texturing operation. During the steady operational condition of manufacturing the bulky textured yarn, the yarn tension is continuously detected in a drafting zone between a texturing device and a winding device, and the operating characteristics, such as surface temperature of the heating roller and, temperature of the pressurized heated fluid supplied to the texturing device, which affect the shrinkage of the processing yarn passing through the texturing device, are automatically adjusted so as to control the yarn tension in the drafting zone.