Manufacturing method of single-material irregular extension multiple long-acting functional textured yarn, the textured yarn thereof, and the fabric made with the textured yarn thereof

A manufacturing method of single-material irregular extension multiple long-acting functional textured yarn (PRKHC), comprising the following steps:

• 1) selection of precursor:
• select a precursor of PET pre-oriented yarn (POY) with residual extension difference of 150%˜160%, and NDR (natural draw ratio) of more than 1.4%, and with single filament DPF<0.5, and modify it by mixing it with 0.8%-1.2% titanium dioxide to form a first precursor;
• 2) differential processing:
• feed the first precursor into a flat conveying roller with a speed of 68˜73M/min, and then into a differential roller with a speed of 59˜64M/min, and then into an accelerating roller with a speed of 95˜102M/min to form a dark and light double colored textured yarn with linen-like appearance and tone;
• characteristically, the differential roller is made up of a rubber roller and a metal embossed roller;
• 3) heating and setting:
• the dark and light double colored textured yarn is conveyed to a heater for heating and setting, the heating temperature of the heater is 180° C.˜200° C.;
• 4) false twisting and deforming:
• after heating and setting, the dark and light double colored textured yarn is conveyed to a false twisting machine and is processed at a twist degree of 2200˜2500 T/M, to form a cotton-feel textured yarn with linen-like appearance and tone, high elasticity, and moisture absorbing and quick drying properties, specifically, the false twisting machine uses a modified Mitsubishi ST-5 pin type;
• and
• 5) air pressure spraying:
• through a middle feeding roller with a speed of 125˜135M/min, the cotton-feel textured yarn after false twisting and deforming is conveyed to a nozzle of 75˜85 knot/m for spraying, to form a single-material irregular extension multiple long-acting functional textured yarn (PRKHC).