Preparation method of high-bulkiness high-strength DTY (Draw Textured Yarn)

Abstract

The invention discloses a preparation method of high-bulkiness and high-strength DTY (Draw Textured Yarn), which is characterized in that after a network nozzle is transformed to an FR2A shaft, the speed of the FR2A shaft is greater than that of the FR2 shaft, that is, false-twisted DTY tows are pulled open (cold-drawn) through a speed difference, and after the pulled-open DTY tows are loosened, single fibers are not mutually twisted, so that the high bulkiness of the yarns is kept. And then heat setting is carried out in a second hot box H2, so that the fluffiness stability of the DTY tows is improved. And different network styles of the yarns can be realized by adjusting the speed difference between the FR2A shaft and the FR3 shaft. And the DTY with high strength and high bulkiness is produced.

Description

technical field [0001] The invention belongs to the technical field of spinning, and in particular relates to a preparation method of DTY with high bulkiness and high strength. Background technique [0002] With the gradual improvement of domestic living standards, people's requirements for clothing are getting higher and higher, and the ever-increasing requirements of consumer terminals also force upstream production processes to keep advanced at all times. Most of the products produced in nylon stretching are used in clothing, and most of them are used in underwear. In recent years, with the improvement of living standards, people have put forward higher requirements for the comfort and softness of clothes. The comfort and softness of clothes made of DTY are directly related to the breaking strength and bulkiness of DTY. The direct factors affecting the breaking strength and bulkiness index of DTY are the production equipment and production process. At present, the stren...

AI Technical Summary

Problems solved by technology

[0003] (1) The breaking strength is between 2.8-4.0cn / dtex, which is far lower than the index of high-strength yarn, which is easy to cause clothing fluffing, pilling, wear holes, etc.

[0004] (2) The bulkiness is unstable and cannot be maintained for a long time. It is easily changed by changes in the external physical environment, causing the clothes to feel hard after being worn and washed several times, making the clothes uncomfortable to wear

[0005] (3) When customers judge the bulkiness, they often compare it through visual inspection and hand feeling, which often cannot truly reflect the bulkiness of DTY yarns, causing troubles in production process adjustment

[0006] (4) Product indicators are not up to standard, resulting in the loss of a large number of customer orders, causing huge economic losses to the company

[0007] (5) If you want to make products that meet high strength and high bulkiness, you must invest in special texturing equipment and high-quality accessories, resulting in high production costs, which is not conducive to company operations

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