Yi Lun is a new type of ultra-cotton copolyester staple fiber, which has the advantages of wrinkle resistance and good shape retention, and has excellent properties such as softness and comfort.
It can be blended with cotton, viscose and other fibers at any ratio, and can also be pure-spun. Yilun fiber product is a low-carbon, environmentally-friendly, energy-saving product, which can be used at room temperature for disperse dyes.
Under normal pressure boiling dyeing, the coloring rate and dyeing fastness are high. Our company uses Yilun fiber for design and production research of various yarn products.
"Yi Lun" is a new type of ultra-cotton copolyester staple fiber, which has the advantages of wrinkle resistance and good shape retention, and has excellent properties such as softness and comfort. Can be bonded with cotton and
Fibers such as rubber are blended at any ratio, or they can be pure-spun. "Yi Lun" fiber product is a low-carbon, environmentally-friendly, energy-saving product.
Boiling dyeing, high coloring rate and fastness.
Our company uses Yilun fiber for design and production research of a variety of yarn products. The products include Yilun fiber pure spinning and combed with combed cotton, viscose, modal fiber and other fibers.
The general proportion, multi-scale, and small-scale blending design, and the production of the designed products were carried out and researched on Siro spinning, compact spinning, and compact Siro spinning. This article takes Yi Lun / Modal 6
5/35 compact Siro spinning 14.8tex knitting yarn is discussed.
1 selection of raw materials
Yilun fiber is produced by Yizheng Chemical Fiber Company. Fineness 1.56dtex, average length 37.6mm, breaking strength 2.5cN / dtex, breaking elongation 26.3%, specific resistance 1.7x107
Q.cm, the defect content is 0.4mg / 100g, and the moisture regain is 0.8%.
Modal fiber is selected from Lenzing, with a fineness of 1.33dtex, an average length of 37.4mm, a breaking strength of 2.41cN / dtex, an elongation at break of 23.41%, and a defect content of 0.5mg /
100g, moisture regain rate is 10.95%.
2 spinning process
In order to ensure accurate blending ratio and uniform blending composition, Yilun and Modal fibers are separately slivered and mixed in the drawing process.
Yilun fiber: FA002C circular disc grabbing machine- → FA035B cotton blender- → FA106A cotton opener → FA161 cotton feeder- → AO76E coiler- → FA201 B carding card
Frame → JWF1310 drawing frame (pre-drawing)
Modal fiber: FA002C circular disc grabbing machine- → FA035B cotton blender- → FA106A cotton opener → FA161 cotton feeder → AO76E coiler- + FA201B comb
Cotton machine
Yilun pre-drawing-Modal sliver: JWF1310 drawing frame (three)-+ JWF1415 roving frame- → EJM128K spinning frame- → AUTOConER X5 automatic winding
Package machine
3 craft measures
3.1 Cotton cleaning process
Yilun fiber has fewer defects, low strength, good uniformity, and low rigidity. It adopts the process principle of "fine grasping, more combing and less beating, gradually opening, low speed, and anti-blocking". Using comb
Needle beaters and shape beaters are used for flexible opening and combing, and strive to lightly comb more to reduce fiber damage and avoid kneading of fibers into neps. FA002C type packet grabber hits the ribs
The distance is adjusted to 2.5mm to speed up the trolley to achieve fine grasping. The FA035B mixed opener uses only two parallel beaters to skip the porcupine beaters. FA106
A-type opener uses a comb needle beater to enlarge the gap between the cotton roller and the beater, and appropriately reduces the beater speed to softly blow and open the fiber. FA161 type vibration feeding machine needs to be added
The cotton storage capacity of the large and medium cotton box can ensure the uniform output of the cotton layer and improve the unevenness of the cotton roll. The distance between A076E comprehensive beater tip and balance roller is appropriately enlarged to reduce fiber damage. fan
Properly increase the speed to facilitate the smooth flow of cotton and ensure uniform cotton condensation and stripping. Set a lower temperature for the compression roller to heat and fix, so that no adhesion occurs between the cotton layer and the cotton layer. Close
Adjust the self-leveling parameters, shorten the length of the roll, and improve the quality of the roll. In order to reduce the nodding rate, the distance between the dust stick and the dust stick is reduced, and the distance between the beater and the dust stick is increased.
3.2 Carding process
Due to the low strength of Yilun fiber, it has a certain static electricity. The cotton net is easy to float and break the net. The sliver quantification in the carding process is slightly more mastered, and the draft of the cotton net is appropriately reduced.
In order to improve the sliver level. Master the process principle of "multi-carding, low speed, good transfer". Select a new type of clothing with higher density, small rake angle and strong penetrability.
On the 201B carding machine, AC2520 cylinder clothing, AD4030 doffer clothing, and MCZ30 cover clothing are required. The condition of the clothing should be good to prevent holes in the cotton mesh,
Ragged edges and cloud spots improve the clarity of the cotton web. At the same time, the distance between the cotton board and the licker-in and the distance between the cylinder and the rotary cover plate are enlarged to achieve gentle carding and ensure the fiber carding and filling.
To prevent excessive fiber damage. The dust-removing knife uses a high-angle and large-angle knife, and a small space is used at the front upper cover of the cylinder to reduce nodding. Relatively high carding process temperature control, reducing
Cotton webs around the rolls and slivers block the bell mouth, and the sliver length is controlled to be too small. Basically, these measures can be referred to when spinning modal sliver, but the configuration of the cover card clothing should be properly encrypted.
Carding process configuration: card roll speed 800r / min, cylinder speed 330r / min, doffer speed 21r / min, licker-in cylinder distance 0.18mm, cylinder-cover distance
0.25mm, 0.23mm, 0.20mm, 0.20mm, 0.25mm, sliver dry weight 20.3g / 5m, modal sliver dry weight 17.5g / 5m, weight unevenness s2.
5%, dry CV value s3.8%, cotton net neps ≤ 1 grain / g.
3.3 Drawing process
Yi Lun adopts the pre-combination process, which can reduce the weight unevenness and weight deviation of the sliver, ensure the dyeing uniformity, and make the parallel straightness of the fiber consistent with the modal.
The difference in tension is beneficial to the uniformity of the sliver after mixing. The drawing process adopts the "light weight, heavy pressure, large separation, low speed" process principle, and the drawing
Matching, adopting the drafting process, the draft multiple of the mixed first rear zone is about 1.7 ~ 1.8, and the draft multiple of the mixed second and third mixed zone gradually decreases to reduce the hook fiber and improve the fiber straightening.
Parallelism, improve the uniformity of sliver. Reduce the output speed of the front pressure roller to 260 ~ 300m / min, keep the sliver channel smooth, and perform antistatic treatment on the rubber roller, and reduce it appropriately.
The length of the doff is fixed, and the relative temperature of the workshop is maintained within the range of 60 to 75% to reduce the occurrence of sporadic yarn defects and neps.
The main process parameters of the drawing process: Yilun's pre-consolidation and post-drawing ratio is 1.75 times, the combined number is 6, the roller spacing is 8x 16mm, the dry weight is 19.5g / 5m, and the output speed of the front pressure roller is 2
80m / min.
Mixed-back zone draft multiple of 1.75 times, combined number of 5 instrument fibers pre-merge + 3 modals, roller spacing 8x16mm, dry basis weight 19.3g / 5m, output speed of front pressure roller 220m /
min.
After the second mixed zone, the draft multiple is 1.55 times, and the combined number is 8. The roller spacing is 8x 16mm. The fixed weight is 18.6g / 5m. The output speed of the front pressure roller is 280m / min.
The draft ratio of the rear three zone is 1.31 times, and the combined number is 8. The roller interval is 8x 16mm, the dry weight is 18.0g / 5m, and the output speed of the front pressure roller is 280m / min.
