Composite interlaced yarn, interlacing method and application therefor

A composite interlaced yarn, being a filament subjected to an interlacing process, wherein the filament is a multifilament, wherein the composite interlaced yarn comprises a plurality of continuous circulation units in a longitudinal length;

• wherein each circulation unit of the plurality of continuous circulation units comprises a first splitting part, a first interlacing part, a second splitting part and a second interlacing part connected in sequence;
• wherein an interlacing fastness of the first interlacing part is different from an interlacing fastness of the second interlacing part;
• wherein the interlacing fastness of the first interlacing part is 85%-95%, and the interlacing fastness of the second interlacing part is 40%-60%;
• wherein the composite interlaced yarn is obtained by the multifilament that is not subjected to the interlacing process sequentially adjusting a pre-tension by a tensioner, passing through a yarn path of a jet, and winding by a winding roller;
• wherein the jet is formed by processing a cubic structure, wherein a cube of the cubic structure has surfaces a and a′ parallel to each other, surfaces b and b′ parallel to each other, and surfaces c and c′ parallel to each other;
• wherein the processing is to open grooves w and v penetrating the surfaces b and b′ on the surface c, open through-holes extending to the surface a′ on the surface a, the through-hole passing through the grooves w and v and serving as the yarn path of the jet, and open holes x and y connected to the through-hole on the surface b or b′, connection surfaces of the holes x and y with the through-hole completely falling into a side wall of the through-holes, the hole x serving as a first jet hole of the jet, the hole y serving as a second jet hole of the jet, and a distance between a center point of the connection surface of the hole x with the through-hole and a center point of the connection surface of the hole y with the through-hole is 5 mm-10 mm;
• when the multifilament passes through the yarn path of the jet, the first jet hole and the second jet hole intermittently inject a compressed airflow into the yarn path, after the first jet hole finishes injecting airflow for a first interval time T1, the second jet hole injects the airflow, and after the second jet hole finishes injecting airflow for a second interval time T2, the first jet hole injects the airflow again;
• a time for a single airflow injection by the first jet hole and the second jet hole is same, T1 and T2 are same, a linear velocity of the winding roller is 30 m/s-50 m/s, and a pressure of injecting the compressed airflow into the yarn path by the first jet hole is greater than a pressure of injecting the compressed airflow into the yarn path by the second jet hole;
• and
• wherein the composite interlaced yarn is used as a warp yarn to make a fabric, and a fabric surface obtained shows characteristics of a single warp yarn being tight in one section and fluffy in another section, reflecting light differently, so a thickness of the warp yarn on the fabric surface is randomly distributed and uneven in appearance, wherein the time for the single airflow injection by the first jet hole and the second jet hole is 0.1 ms-0.2 ms, and T1 and T2 are both 0.225 ms-0.3 ms, and wherein a pressure of the compressed airflow injected into the first jet hole is 0.2 MPa-0.3 MPa, and a pressure of the compressed airflow injected into the second jet hole is 0.05 MPa-0.1 MPa.