Compact spinning technology has successfully solved the hairiness and flying particles caused by ring spinning, improved the strength and wear resistance of the yarn, and greatly improved the appearance and physical properties of the yarn, compared with ordinary ring spinning. Compared with spinning, it has obvious advantages in terms of yarn quality and output.
What is compact spinning?
Compact spinning is a new spinning technology that is spun on a new and improved ring spinning machine.
1. Principle of compact spinning
Compact spinning (concentrated spinning) : A new type of spinning technology improved on the ring spinning machine. A fiber control area is added in front of the traditional drafting device. The air flow is used to laterally condense the fiber bundles passing through the control area, so that the width of the fiber bundles is greatly reduced. The fiber bundles are gathered and then twisted and wound. Almost every fiber of the fiber bundle can be gathered into the yarn body to form a concentrated spinning yarn with low hairiness and high strength
2. Compact spinning equipment
So far, the compact spinning equipment that has been put into use includes foreign compact spinning equipment established in Switzerland. Compact spinning: German Suesen compact spinning, German Zinser compact spinning, Japanese Toyota compact spinning, Shilokas compact spinning.
Compact spinning classification
One is the airflow concentration type compact spinning system, which mainly uses negative pressure airflow force to make the concentration area The fibers in the agglomeration area shrink transversely and gather tightly;
One is a mechanical agglomeration compact spinning system, which mainly uses mechanical force to cause the fibers in the agglomeration area to shrink laterally and agglomerate. close.
Key equipment for compact spinning
Gathering roller: Gathering roller is the core component of compact spinning and has both It has important functions such as drafting, air suction gathering, and fiber transportation.
The function of the suction pipe: connects the drafting device and the twisting and winding mechanism and forms a negative pressure suction fiber gathering area
Gathering ring: Completes air suction to gather fibers and transport fiber strands
Compact spinning process parameters
Air negative pressure in the suction duct:
The negative pressure of the concentrated ring suction is generally 1964~3437 Pa;
Drawing ratio of the gathering ring:
If the drafting ratio is too high, evenness will deteriorate. Generally, the draft ratio is 1.01~1.05;
The parameters of the gathering circle:
Using regularly arranged circular holes, 1.2mm hole diameter and 3mm hole diameter, better spinning quality can be obtained;
Compact spinning characteristics
1. Advantages
① Less hairiness
The hairiness of traditional ring spinning is mainly produced in the twisting triangle area, while the hairiness of compact spinning is eliminated In the triangle area, the hairiness is greatly reduced. Production practice proves. The hairiness of compact spinning yarn is reduced by 70% to 80% compared with traditional ring spinning.
② Good dryness
The fiber straightness in the sliver is improved and the yarn is dry Evenness is better.
③Abrasion resistance
Compared with traditional ring spinning, the fiber arrangement of compact spinning yarn Neat and straight. The yarn has a tight structure and the fibers are not easy to fall apart, so the yarn has good wear resistance.
④High strength
The yarn strength depends on the number of fibers in the yarn and the fiber cohesion and friction between them. Compact spinning has less hairiness. The number of effective fibers in the yarn is greater. In addition, the fibers are arranged neatly and tightly held together. The yarn has high strength. Compared with traditional ring spinning, the strength of compactly spun yarn is increased by 10% to 25%.
⑤Good pilling resistance
Fabric pilling is closely related to the hairiness of the cloth surface . Fabrics produced using compactly spun yarns have less hairiness on the fabric surface and have significantly better pilling resistance than traditional ring spinning;
⑥Low twist
Due to the increased strength, the yarn twist can be appropriately reduced, generally 20% less than ring spinning, thereby increasing yarn output;
2. Disadvantages
Large investment in equipment
High startup costs
Strong cleaning performance
Characteristics of compact textiles
1. The appearance of the fabric is improved
Compact spinning has less hairiness, the yarn is tight and smooth, and the coverage of the fabric is weakened. Therefore, the surface of the fabric is smooth, the texture is clear, and the drape is improved;
2. Improvement of fabric service performance
The fracture performance and tearing of compact fabrics are emphasized, and the wear resistance is improved The elasticity and resilience are improved, making the fabric wear-resistant and less prone to pilling, and the wear-resistance and iron-free properties of the garment are also improved;
3. Unique fabric style
The smaller twist of compact spinning makes the fabric feel soft, delicate and silky, and its good wear resistance is more suitable for the development of looping and pile fabrics. , so that the looping and raising of fabrics or clothing are not easy to wear, and the fibers in cut pile fabrics are not easy to wear away;
Applicable to compact spinning Scope
1. Combed cotton extra-fine yarn
Quality of combed cotton extra-fine yarnThe requirements for single yarn strength and hairiness are difficult to grasp when weaving. Using compact spinning technology can solve this problem well.
2. Linen spinning
The ramie yarn spun by the traditional ring spinning method has long and abundant hairiness. ． In the post-processing process, the cost of singeing is very high, so compact spinning technology should be used to transform the linen spinning frame. The hairiness of linen yarn is greatly reduced, and the shortcomings of traditional ramie yarn such as excessive hairiness, surface hairiness, and obvious defects are improved.
3. Wool spinning
Compared with cotton fiber, wool fiber has lower strength, but its elongation Good long-term performance. Compact spinning can improve yarn strength. Practical applications show that wool compact spinning improves yarn thickness, strength and elongation more significantly
4. Yarn-dyed products
The domestic introduction of compact spinning equipment and devices and the use of compact yarns started with yarn-dyed weaving. At present, the yarn-dyed industry that uses the most compact yarns is also the yarn-dyed industry. In Europe, 80% of men’s shirt fabrics are compactly spun.
5. Gray fabric products
The varieties currently used are mainly high-count and high-density fabrics, such as: JC 80*80 anti-feather fabric, JC 60*60 twill fabric, JC 40*40 Drikong, using compact spinning yarn can reduce warp breakage by 30% compared with using traditional ring spinning yarn.
6. Knitted fabrics
Compact yarn also has strong advantages when used in knitted fabrics. At present, Application varieties include casual wear. High-end underwear, sportswear, T-shirts, etc. Use compact yarn. The cloth surface has less hairiness, so the singeing process can often be omitted; the cloth surface texture is clear, and the quality of the finished cloth is significantly improved; there are fewer breakages. Production efficiency is improved. The overall benefit is relatively high. </p
