Silk knitted products are not only hygroscopic, breatha […]
Silk knitted products are not only hygroscopic, breathable, lightweight and healthy, but also more elastic, wrinkle-resistant and washable than woven silk. At present, the more popular composite air layer thermal underwear fabrics on the market are mainly made of cotton and chemical fiber, and the silk material is relatively small. For this reason, a series of fabrics containing silk composite air layer have been developed, mainly from core material processing, weaving technology, dyeing technology Improvements and product innovations are well received by consumers. The core material of ordinary air layer fabrics is used without anti-pilling treatment due to friction, static electricity and other reasons. In view of this situation, on the basis of the previous elastic mesh processing technology, the anti-pilling core material is processed, but on the basis of not affecting the shrinkage and bulkiness of the core material, the processed mesh core material is better than ordinary yarns bulky.
The interweaving of filaments is the "braided" section of the air, where the smoothness does not affect the weaving, and the elastic fiber mesh of the unpaid part passes through the air opening, resulting in better bulkiness and better thermal insulation effect. It is made of interwoven elastic yarn, and the cohesion of the post office net is good. Under ordinary force, the elastic force is not easy to loosen. Coupled with proper weaving, it overcomes the defects that the common core thread is easy to drill out of elastic fleece and the silk thread is detached. Because silk is relatively hard, tough and resistant to bending, it is more prone to defects in the weaving process than ordinary yarns, such as triangular eyes and irregular cloth surfaces.
Difficulties The tension in the silk weaving process control process is too easy to fall off, which will cause excessive wear of the loom parts, and oil stains are also prone to fluff. By constantly adjusting the machine, the best weaving process is compared and selected. Because silk has good tenacity, the weaving of silk needs to control the tension. Machines and knitting needles with excessive tension will cause excessive wear and tear, and the thread will fall off when outputting. Generally, the thread tension should be controlled at 3.92 to 5.88 cN. The polyester yarn tension should be as small as possible, generally controlled at 1.96 ~ 2.94 cN. When weaving, if the tension of the fabric surface is too small, the surface of the fabric will easily float.
Generally, it cannot be circled. The air layer fabric tension of the fabric surface should be appropriately increased, but not too large. Excessive tension will easily cause holes on the surface of the fabric. No holes shall prevail. . Because silk has good toughness, the surface of the woven fabric is easy to fluff, so use them to adjust the needle cylinder and the triangle triangle of the needle plate, so that the needle head and the needle cylinder can enter the loop at the same time. This kind of yarn entering tension is relatively stable and is not easy to break. After the air layer composite fabric is weaved, it needs to undergo scouring, dyeing, shaping and other finishing. Dye the fabric with one side inward and avoid sanding the front to keep the front smooth. Use acid dyes, control the scouring time and temperature, and the color fastness can reach three levels or above.