CN106149124A - A kind of superelevation props up tight Two strand Yarn Spinning yarn and manufacturing technique method thereof - Google Patents

Abstract

The invention relates to a production process of a regenerated cellulose fiber knitted material, in particular to a super-high-count compact Siro spinning yarn and a production process thereof, belonging to the technical field of textile fiber spinning. The purpose of the present invention is to provide a super-high-count compact Siro spinning yarn and its production process. The present invention overcomes the disadvantages of traditional ring spinning such as excessive hairiness and low strength, and combines the characteristics of viscose fiber to make the yarn It has higher strength and less hairiness, and the product is delicate, soft and comfortable, and is more suitable for making underwear and high-end clothing.

Description

A kind of ultra-high-count compact siro-spun yarn and its production process

technical field

The invention relates to a production process of a regenerated cellulose fiber knitted material, in particular to a super-high-count compact Siro spinning yarn and a production process thereof, belonging to the technical field of textile fiber spinning.

Background technique

Compact siro spinning technology is a research and development hotspot of spinning technology in recent years, and it is also the development direction of spinning technology in the future. Compact siro spinning is a combined spinning method combining compact spinning and siro spinning. The yarn spun by this technology combines the excellent characteristics and quality of the two spinning methods, and is different from the traditional ring spinning single yarn. Compared with siro yarn, compact siro spun yarn has less hairiness, higher strength, and more effect of siro spinning.

Compact siro spinning is an important way to improve the quality of products. Compared with traditional ring spun yarn, compact siro spun yarn has a softer feel and a smoother and smoother surface. It is the first choice for high-end underwear, high-end sportswear, and high-end bedding, with high added value and broad development prospects.

Contents of the invention

The purpose of the present invention is to provide a super-high-count compact Siro spinning yarn and its production process. The present invention overcomes the disadvantages of traditional ring spinning such as excessive hairiness and low strength, and combines the characteristics of viscose fiber to make the yarn It has higher strength and less hairiness, and the product has the characteristics of delicate, soft and comfortable.

The object of the present invention is achieved in the following way: a super high-count compact siro-spun yarn and its production process, the main technical emphasis is on the technical parameter optimization of strength and hairiness and the selection of equipment accessories.

The present invention adopts following technical scheme:

A super-high-count compact Siro-spun yarn and its production process, the steps include: ①, opening and cleaning: opening and removing impurities from the raw fibers; ②, carding: making the raw fibers into fiber strips; ③ , drawing; ④, roving; ⑤, spun yarn; ⑥, winding; in the method: the opening and cleaning step and the carding step adopt a combined blowing and carding machine; Quantitative weight is 17.5g/5m, two parallel dry weight is 15.5g/5m, the combined number of first parallel is 6, and the number of double combined is 8. The center distance of the rollers is 43*51.

Preferably, the ambient temperature in the drawing step is 24°C and the humidity is 65%.

Preferably, in the drawing step, the post-drawing ratio of the first drawing is 1.46, and the post-drawing ratio of the second drawing is 1.46.

Preferably, in the drawing step, the total draft ratio of the first parallel is 7.2, and the total draft multiple of the second parallel is 8.8.

Preferably, in the carding step: the dry basis weight of carding is 22.1g/5m, the cylinder speed is 407r/min, the licker-in speed is 1066r/min, the doffer speed is 160m/min, the interval between the licker-in roller and the cylinder The distance between the cylinder and the doffer is 8 wires, the distance between the cylinder and the doffer is 7 wires, and the draft ratio is 90.

Preferably, in the drawing step: the output speed of the first parallel is 350m/min, and the output speed of the second parallel is 450m/min.

The beneficial effects of the present invention are: the method of the present invention can overcome the shortcomings of traditional ring spinning with many hairiness and low strength; moreover, viscose fiber is selected as the raw material, so that the product has higher strength and less hairiness. The fabric is delicate, soft and comfortable, and is more suitable for making underwear and high-grade light and thin clothing.

detailed description

The invention discloses an ultra-high-count compact siro-spun yarn and a production process thereof, which are implemented in the steps of opening and cleaning, carding, drawing, roving, spun yarn, and winding.

Spinning material: 1.1dtex*38mm, 1.33dtex*38mm

Blowing-carding unit: enlarged gauge, reduced carding strength, light weight, low output speed;

Drawing frame: low speed, uniform evenness control, small draft roller gauge, adopting the principle of "small gauge, small tension";

Roving: low speed, reducing tension difference between spindles;

Spinning: Optimal air flow, gauge, draft multiple, weight, cradle pressure, spinning twist coefficient, etc., low speed.

Main technical characteristics of spun yarn:

1. It is necessary to control the tension of the equipment in each process to avoid accidental drafting, and the production equipment in the process should be finely leveled;

2. Appropriately reduce the speed of the machine to reduce the yarn breakage rate.

3. Appropriately reduce the number of travellers, control the shape of the balloon, and reduce hairiness

4. Carry out a key test on the negative pressure of the compact siro spinning special-shaped tube, compare the hairiness and strength, and select the optimal negative pressure.

The present invention transforms the equipment and uses a special servo motor to independently drive the electronic drafting system of the front, middle and rear rollers, which fundamentally changes the transmission mode of the drafting part of the traditional spinning frame, and realizes high-precision and high-stability control. It can freely spin various slub yarn fancy varieties, and the multifunctional touch screen is extremely operable.

1. Main performance indicators of raw materials

The main performance indicators of the selected biomass cellulose fiber:

name Viscose Specification 11dtex*38mm/1.33dtex*38mm average length 37.6mm mislong fiber 0.2mg/100g defect 1mg/100g Breaking strength 2.52cN/dtex Moisture regain 13%

Main process technology and its measures

Blowing and carding process

The cleaning and carding process adopts the process of "more combing, less beating, less falling", and the speed of beaters is appropriately reduced. In the carding process, the process principle of "high speed, heavy weight, less recovery, and small tension" is adopted. In order to reduce fiber damage and improve fiber transfer, the cylinder and the movable cover, between the cylinder and the doffer, and the licker-in roller are appropriately enlarged. The gap between the cotton feeding plate and the cotton feeding plate can reduce the clogging and neps formed by winding flowers, and improve the production rate.

The carding process should be reasonably configured according to the characteristics of viscose. According to the characteristics of viscose fiber with less neps and impurities, and good fiber parallelism and straightness, the process principle of light carding is adopted.

Main process parameters:

Parameter setting of viscose pure spinning carding process

Drawing process

The drawing process design plays a key role in the fiber mixing and yarn dry quality, especially the draft ratio and distribution roller gauge, which directly affect the evenness level. According to the characteristics of viscose fiber, in order to ensure that the fiber is fully mixed, To reduce the weight unevenness, the drawing adopts three-way combining method. Due to the many doublings and wires of biomass cellulose fibers, it is easy to block the bell mouth during drafting. In order to ensure the normal operation of the lathe and the stability of the quality of the cooked slivers, "large gauge, small tension, and multiple merging" is adopted at the same time. The technology improves the evenness level of the cooked strips. Drawing frame temperature and humidity control is very important, the humidity should be controlled on the high side, the temperature is 24°C, and the humidity is 65%.

The viscose fiber has long length and good uniformity. In order to reduce the damage to the fiber during the drafting process of the draw frame and ensure the quality of the yarn, the drafting in the rear area is appropriate.

The main process parameters of drawing frame:

According to the characteristics of spinning equipment, we choose a motor with a power of 11kW as the negative pressure power source to ensure the negative pressure effect. In order to reduce the negative pressure hole difference, from the single-sided headstock, it is divided into 150 spindles, and diameter reducers with diameters of 13.5mm, 11.5mm, 10mm, and 8mm are installed in the negative pressure branch pipe in order to control the difference between the holes. Ceramic Accumulated yarn guides to control the spinning section.

In the roving process, in order to reduce the static electricity generated during the friction with the top roller, the temperature and humidity are increased, which is conducive to the rapid release of static electricity. At the same time, reduce the speed of small spindle (900r/min) and large spindle (950r/min), and use 1050r/min spindle speed for medium yarn, reduce the broken end rate, ensure the normal operation of roving production and life, increase the roller gauge appropriately, and reduce the fiber in the Damage during stretching.

Main technical parameters of roving:

Spinning process: The configuration of the compact siro spinning process is a very comprehensive work. Airflow parameters, roller gauge, draft multiple in the rear area, quantitative distribution of each channel, cradle pressure, spinning twist coefficient, etc. must be itemized. preferred.

Since viscose fibers 80 and 100 are new varieties, the main quality indicators that affect high-count yarns in viscose siro compact spinning are yarn hairiness and strength. Among many spinning process parameters, the negative pressure of compact siro spinning has the greatest impact According to the comparison test, when the suction pressure is 2.5KPa, the indicators such as evenness, neps, and hairiness are better than or equal to the indicators at 2.8KPa and 3.0KPa, which can save pressure and cost, and the premise of good yarn quality Next, select the suction pressure of 2.5KPa. To reduce yarn breakage rate. When the ingot speed is 15300r/min, the end break is too high, and the labor intensity of the operator is too high. When it is adjusted to 15000r/min, there are fewer broken ends, and the number of travellers should be appropriately reduced to control the shape of the balloon and reduce hairiness. The choice of traveler type has a great influence on the neps and end-breaks of compact siro spinning R9.8tex yarn per kilometer. Initially, we used Blake CLUL udr 10/0 traveler, and the number of neps per kilometer of yarn reached 78 , There are more broken ends at 1,000 spindles, 25/1,000 spindles; when the number is reduced by one, the number of neps per kilometer is reduced to 55, and 1,000 spindles are broken at 15/1,000 spindles. Appropriately reduce the rear draft (choose 1.15 times)) and the jaw gap (2.2)

Because the production is Siro compact spinning 7.4tex and 5.9tex extra-fine yarn, the raw material fineness is selected from Tangshan Sanyou, Aoyang viscose staple fiber 1.11dtex*38mm, Lenzing, Sateri, Shandong Yamei The viscose staple fiber is 1.33dtex*38mm to ensure the dryness and strength of the yarn. The spinning performance of viscose fiber varies greatly from batch to batch. In order to stabilize the quality, multi-mark production is used.

Transform the spinning equipment, through the selection and process optimization experiments, the selected temperature is 23-25 degrees, the relative humidity is 60-65%, the speed of the carding parts is reduced, and the carding strength is reduced to ensure that the fibers are well transferred into slivers.

The process design of the drawing process has a key influence on the mixing of fibers and the evenness of the yarn, especially the setting of the draft ratio and its distribution, and the determination of the roller gauge, which directly affect the sliver sliver. dry and neps. In order to ensure the full mixing of fibers and reduce the unevenness of yarn weight, the drawing process adopts the method of three-way combination, and the process principle of "small gauge, small tension" improves the straightening parallelism of fibers.

The equipment used in the above process is as follows: Trützschler B0-A2300 plucking machine, FD-0/T0-T1 cotton opener, TC5-1 carding machine, FA320 drawing frame (both head and second FA320 draw frame), TD03 draw frame, FA468E roving frame, RX240E Toyota compact spinning machine (electronic drafting belt slub device), No.21c Murata automatic winder.

Utilizing the method of the present invention can overcome the shortcomings of traditional ring spinning with many hairiness and low strength. Furthermore, viscose fiber is selected as raw material, so that the product has higher strength and less hairiness, and the fabric is delicate, soft and comfortable. It is more suitable for making underwear and high-end clothing.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (6)

1. A kind of ultra-high count compact siro spinning yarn and its production process method, it is characterized in that it is made by following specific steps: (1) Opening and cleaning: opening and removing impurities from the original fibers; (2) Carding: making fiber strips from the original fibers; (3) drawing; (4) roving; (5) spun yarn; (6) Winding; the method is characterized in that: the opening and cleaning step and the carding step adopt a combined blowing and carding machine; in the drawing step, two roads are combined: the first combined dry weight is 17.5g/5m, and the second combined dry weight is 15.5g/5m, the number of merging in the first merging is 6, and the number of merging in the second merging is 8. The center distance of the rollers in the first merging is 47*43*50, and the center distance of the rollers in the second merging is 43*51. 2. A super-high-count compact spun yarn and its production process according to claim 1, characterized in that: the ambient temperature in the drawing step is 24°C and the humidity is 65%. 3. A kind of ultra-high-count compact spinning yarn and its production process method according to claim 1, characterized in that: the post-drawing ratio of the first drawing in the drawing step is 1.46, and the post-drawing ratio of the second drawing is 1.46. is 1.46. 4. A kind of ultra-high-count compact spinning yarn and its production process method according to claim 1, characterized in that: the total draft multiple of the first parallel in the drawing step is 7.2, and the total draft multiple of the second parallel is 8.8. 5. a kind of ultra-high count compact spinning yarn and its production process method according to claim 1, it is characterized in that: the dry weight of carding is 22.1g/5m, and cylinder speed is 407r/min, and licker-in speed is 1066r/min, the doffer speed is 160m/min, the gauge between the licker-in roller and the cylinder is 8 wires, the gauge between the cylinder and the doffer is 7 wires, and the draft ratio is 90. 6. the production method of a kind of compact siro fancy high-count material according to claim 1 is characterized in that: in the drawing step: the output speed of the first parallel is 350m/min, and the output speed of the second parallel is 450m/min. min.