Compared with traditional ring spinning, jet vortex spinning has many advantages such as short spinning process, high production efficiency, high automation and intelligence, and labor saving. At present, the jet vortex spinning technology has developed from small batch production to large-scale production in China. In 2017, the national spinning enterprises have more than 1,500 jet vortex spinning equipment, totaling more than 135,000 heads (according to 90 heads per unit), accounting for the world. About 50% of the jet vortex spinning capacity.

Although the jet vortex spinning technology has many advantages, it also exposes some drawbacks in the production practice. For example, the yarn strength is 10% lower than that of the ring spinning; the raw materials are demanding, and the ring spinning is not adaptable; the yarn is used. The surface is narrow, there is no wide range of ring spinning, and so on. At the same time, the domestic production of jet vortex spinning knitting yarn with viscose fiber still dominates, the product structure is single, the use is narrow, and the homogenization competition is fierce. Therefore, accelerating product structure adjustment, innovative development of diversified, functional, high value-added new jet vortex spinning yarns has become the only way for jet vortex spinning enterprises to improve quality, efficiency and transformation.

1. Jet vortex spinning

The raw liquid colored viscose fiber is blended with the natural viscose fiber, or the high-strength natural fiber such as 10% to 30% TencelTM, polyester, acrylic fiber, etc. is mixed into the raw liquid colored viscose fiber, and the hemp gray series jet vortex spinning can be developed. Color spinning. It can not only improve the strength of the yarn, but also overcome the shortcomings of the viscose fiber being too soft, improve the yarn style and increase the added value. This type of yarn can be produced according to user requirements to produce deep, medium and light colors, which can be achieved by adjusting the proportion of mixed natural fibers.

Hemp gray series color spinning

The color series jet vortex spinning is made by mixing the colored viscose with other multi-color fibers. There are a variety of colorful series and colorful series, such as 92% black viscose and 8% colorful polyester blend. Or the color viscose is blended with triangular shaped polyester, colored polyester and colored polyester particles, and the mixing ratio is only about 10%, so that the yarn has a glittering, bright, multi-colored effect.

Color series of color spinning

2. Jet vortex spinning modified polyester yarn

In addition to the use of cationic dyeable polyester to produce "yang stick" blended yarn, it is also possible to develop polyester jet vortex spun yarn with various functions, such as super-imitation cotton polyester, moisture wicking polyester, honeycomb structure polyester. In addition, domestic chemical fiber enterprises have introduced special polyester for jet vortex spinning from the aspects of fiber performance improvement and oil formulation improvement, and also created favorable conditions for spinning enterprises to develop new jet vortex spinning yarns with modified polyester.

3. Jet vortex spinning cotton and cotton blended yarn

Due to the high requirements on raw materials for jet vortex spinning, it is required to use long raw material length, fine fiber and high uniformity. Compared with chemical fiber, cotton has a short length, and most of the length except long cotton is between 25 and 30 mm. And there is a considerable amount of short velvet (10% to 15%), which is difficult to produce jet vortex spinning due to the low length uniformity.

In order to expand the application of cotton in jet vortex spinning, for high-end garments and household cotton fabric products, in recent years, domestic spinning companies have successfully developed combed high-end jet vortex spinning cotton and cotton on jet vortex spinning machines. Blended yarn spinning. For example, Jiangsu Yueda successfully produced 5.8tex combed cotton jet vortex spinning. Blum Oriental and Huafu Gold Bottle developed cotton/polyester and polyester/cotton blended yarns on the jet vortex spinning machine. The resulting fabric has both smooth and slippery properties and good moisture absorption and skin-friendly properties.

4. Jet vortex spinning fiber blended yarn

Hemp yarns and fabrics have crisp, refreshing and breathable properties, and have natural antibacterial and antibacterial properties, but they have high rigidity, low elongation at break, and poor wrinkle resistance. Hemp yarns are produced by jet vortex spinning machine. It is more difficult. In recent years, many spinning enterprises in China have carried out active research and exploration in the development of jet vortex spinning fiber blended yarns, such as Jiangsu Yueda, Shuangdun Textile, and Dezhou Huayuan respectively. Linen/cotton (55/45) ), ramie / cotton (52 / 48), hollow polyester / modal / linen (35 / 35 / 30) blended yarn production practice.

To develop jet vortex spinning fiber blended yarn, we should grasp the following key technologies:

1 pretreatment of hemp fiber to improve its mechanical properties and enhance softness;

2 The spinning yarn should be mainly medium and low count, generally not exceeding 19.7 tex;

3 The higher the proportion of mixed hemp, the more difficult the production, the mixing ratio of hemp should generally be controlled between 30% and 35%;

4 The pre-spinning process strengthens the combing of hemp fibers and eliminates harmful defects;

5 should be separately combed with other fibers and mixed on the draw frame (ie, sliver blending);

6 jet vortex spinning machine production should increase the nozzle pressure, reduce the spinning speed properly, so that the hemp fiber can be well coated.

Jiangxi Donghua Machinery Co., Ltd. specializes in the production of polypropylene spinning machine, polypropylene strong spinning equipment, polypropylene high-strength spinning equipment, polypropylene spinning machine, polyester spinning machine, aramid 1414 fiber spinning equipment, DHP419 series high-strength polypropylene Spinning drafting machine, polypropylene spinning machine, DHP418 series polypropylene spinning drafting machine, DHkv1235-12 type polyester spinning machine, DHPE high-strength high-modulus polyethylene fiber spinning equipment, DHTA type aramid fiber 1414 fiber spinning equipment, HDZF3 High-vacuum dynamic drying-solid-phase viscosifying machine, polypropylene spinning machine.