CN104562345B - Carrier type vortex spinning tencel/combed cotton blended yarn and method for weaving thereof - Google Patents

Abstract

A kind of carrier type vortex spinning tencel/combed cotton blended yarn and method for weaving thereof, its raw material choice method is: use high-strength low-temperature water-soluble polyvinyl as carrier, with tencel fiber, cotton fiber blending；1.56dtex × 38mm selected by the most high-strength low-temperature water-soluble polyvinyl, and tencel fiber selects 1.3dtex × 38mm, and cotton fiber selects 137A grade Xinjiang Long staple cotton；The most high-strength low-temperature water-soluble polyvinyl blending ratio is 10%～20%.By methods such as specific weavings, the examined project of this product is made to meet FZ/T12007 2005 " cotton dimension blending true qualities yarn " Grade A standard.

Description

Carrier type vortex spinning tencel/combed cotton blended yarn and its weaving method

technical field

The invention belongs to the technical field of textiles, in particular to a carrier type vortex spinning tencel/combed cotton blended yarn and a weaving method thereof.

Background technique

In the prior art:

Tencel fibers have long length, good uniformity, no impurities, and short fleece. Therefore, the distance and speed configuration of the opening and cleaning unit are similar to those of polyester fiber spinning. In the opening and cleaning process, we found that it is difficult to grasp and open Tencel fibers. Too light or too heavy opening will affect the subsequent processing and the appearance of the final product.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the present invention proposes a new carrier type vortex spinning tencel/combed cotton blended yarn and its weaving method.

(Water-soluble fiber can use polyvinyl alcohol fiber, seaweed fiber or carboxymethyl cellulose fiber, etc.)

Main development content and technical key of the present invention are as follows:

A carrier-type vortex spinning tencel/combed cotton blended yarn is characterized in that the raw materials are selected as follows:

High-strength and low-temperature water-soluble vinylon is used as a carrier, blended with Tencel fiber and cotton fiber;

Among them, the high-strength low-temperature water-soluble vinylon is 1.56dtex×38mm,

The tencel fiber is 1.3dtex×38mm,

Cotton fiber selection 137A Xinjiang long-staple cotton;

Among them, the high-strength low-temperature water-soluble vinylon blending ratio is 10% to 20%.

The characteristic is that the pretreatment method of the raw material is as follows: before use, the high-strength low-temperature water-soluble vinylon needs to be opened and placed for 24 hours to achieve the balance of moisture absorption and desorption.

The characteristic is that the specifications of the blended yarn are: Tencel fiber LF45/combed long-staple cotton 45/water-soluble vinylon 1072 ^S K; the blending ratio is 45:45:10, and the carrier type vortex spinning knitting yarn of 72 English counts.

A carrier type vortex spinning tencel/combed cotton blended yarn, the spinning method is:

High-strength and low-temperature water-soluble vinylon, tencel, and long-staple cotton are respectively opened and cleaned, carded into slivers, and pre-drawn. The slivers of the three components are mixed in three steps according to the blending ratio to make mature slivers, and then vortex spinning to make the required yarns.

a. Tencel fiber adopts the process of frequent grasping, less grasping, less beating, and combing instead of beating in the opening and cleaning process; the process requirements of Tencel fiber in the cotton opening and cleaning step include:

Beater speed of FA106 cotton opener is 550±50r/min (preferably 550r/min);

The comprehensive beating speed of the A076C coiling machine is 700±70r/min (preferably 700r/min);

The design weight of the lap is 485±50g/m (preferably 485g/m);

The lap length is 30.6±3m (preferably 30.6m).

The carding process adopts light weight, slow speed, and high flat speed to improve the quality of the cotton web, and appropriately enlarges the gap between the flat and cylinder, which is beneficial to reduce the generation of short fibers and improve the uniformity of the yarn. The process requirements of Tencel fiber in the carding process include:

Gauge between cylinder and cover plate 8×7×7×7×8";

Cylinder speed 340±30r/min (preferably 340r/min);

The licker-in speed is 680±70r/min (preferably 680r/min);

The doffer speed is 23±2r/min (preferably 23r/min);

Cover plate speed is 80±8mm/min (preferably 80mm/min);

Dust removal knife position: flat, 90 ⁰ ;

The raw sliver weight is 25±2g/5m (preferably 25g/5m).

The pre-drawing process adopts a small draft multiple and a large draft in the back area to straighten the back hook fiber. (The process requirements of Tencel fiber in the pre-drawing process include:

Merge root number 6;

Back draft 1.7;

Total draft ratio: 6.12;

Gauge 11×18mm;

Vehicle speed 200±20m/min (preferably 200m/min);

Quantitative 24.5±2g/5m (preferably 24.5g/5m).

b. The water-soluble vinylon fiber is opened and placed (24 hours) to reach the balance of moisture absorption and desorption before use;

In the opening and cleaning process, the process of loosening and light beating, gradual opening, less fiber damage, large air volume, slow speed, large channel, anti-blocking, spinning sticking, and enhanced uniform control is adopted; water-soluble vinylon fiber is used in the opening and cleaning step Process requirements in include:

Beater speed of FA106 cotton opener is 540±50r/min (preferably 540r/min);

The comprehensive beating speed of the A076C coiling machine is 750±70r/min (preferably 750r/min);

The design weight of the lap is 338±30g/m (preferably 338g/m);

The lap length is 30.6±3m (preferably 30.6m).

The carding process adopts the process of multi-combing, fast transfer, high tension, anti-winding and anti-blocking, and reasonable speed; the process requirements of water-soluble vinylon fiber in the carding process include:

Gauge between cylinder and cover plate 9×8×8×8×9";

Cylinder speed 360±30r/min (preferably 360r/min);

The licker-in speed is 700±70r/min (preferably 700r/min);

The doffer speed is 24±2r/min (preferably 24r/min);

Cover plate speed is 84±8mm/min (preferably 84mm/min);

Dust removal knife position: flat, 90 ⁰ ;

The raw sliver weight is 20±2g/5m (preferably 20g/5m).

In the pre-drawing process, the process principles of heavy pressure, strong control and large gauge are adopted. The process requirements of water-soluble vinylon fiber in the pre-drawing process include:

Merge root number 6;

Back draft 1.7;

Total draft ratio: 7.74 times;

Gauge 11×18mm;

Vehicle speed 200±20m/min (preferably 200m/min);

Quantitative 15.5±1g/5m (preferably 15.5g/5m).

c. Cotton fibers are made of 137A grade Xinjiang long-staple cotton.

The process of opening and cleaning cotton adopts the technical measures of frequent grasping, less grasping, proper blowing, early falling and less breaking, and combing instead of beating; the process requirements of cotton fiber in the cotton opening and cleaning step include:

The beating speed of FA106B cotton opener is 500±50r/min (preferably 500r/min);

The comprehensive beating speed of A076C coiling machine is 900±90r/min (preferably 900r/min);

The design weight of the lap is 350±30g/m (preferably 350g/m);

Lap length 38.33±3m (preferably 38.33m);

The moisture regain of the lap is 8.2%.

The carding process adopts a tight gauge and a slightly lower speed to ensure the carding effect and reduce fiber damage. At the same time, the flat speed is appropriately increased to remove more impurities and short fibers. The process requirements of cotton fiber in the carding process include:

Gauge between cylinder and cover plate 7×6×6×6×7″;

Cylinder speed 360±30r/min (preferably 360r/min);

The licker-in speed is 720±70r/min (preferably 720r/min);

The doffer speed is 34.5±3r/min (preferably 34.5r/min);

Cover plate speed is 280±20mm/min (preferably 280mm/min);

Dust removal knife position: flat, 90 ⁰ ;

Wet weight quantitative 16±1g/5m (preferably 16g/5m);

Moisture regain 7%.

After the resulting slivers are rolled together, the combing process is carried out to make a combed sliver;

The combing process adopts the process of feeding cotton back and at a lower speed, and the noil rate is controlled at 18±1.8% (preferably 18%). The process requirements of cotton fiber in the combing process include:

Speed: 215±20 clamps/min (preferably 215 clamps/min);

Moisture regain: 6.5%;

Noil rate 16±1.6% (preferably 16%);

The wet weight is 23.5±2g/5m (preferably 23.5g/5m).

The slivers of the three components are blended in three steps according to the blending ratio to make a mature sliver, and then vortex spinning to make the required yarn, wherein:

The drawing process adopts the technological principle of "small tension, light weight, slow speed, and multiple merging". The drawing speed is 200±20m/min (preferably 200m/min), and the rubber rollers are nylon 6-coated antistatic rollers. Reduce the phenomenon of roller winding around the top roller to ensure smooth driving.

The vortex spinning process adopts the process of "appropriate pressure, reasonable gauge, and slow speed", adopts imported anti-static top rollers, anti-winding and anti-winding, and reduces the speed (the output speed is about 300±30m/min, preferably 300m/min ) to ensure the stability of yarn quality.

The quality of this blended yarn:

Carrier vortex spinning TEL LF45/combed long-staple cotton 45/water-soluble vinylon 1072 ^S K:

Single yarn breaking strength: 16.2cN/tex;

Single yarn breaking strength coefficient of variation CV%: 12.2;

Weight coefficient of variation per hundred meters CV%: 0.8;

Weight deviation% per 100 meters: -0.8;

Evenness coefficient of variation CV%: 18.7;

Blackboard neps: 12 grains/g;

Hairiness index H: 3.5

The inspected items conform to the first-class product standard of FZ/T12007-2005 "Cotton-dimensional blended natural color yarn".

detailed description

Below in conjunction with specific embodiment the present invention is further described as follows:

1. Main development content and key technologies

1. The selection technology of spinning count, blending ratio and raw materials.

In order to ensure that the product has sufficient strength and the final product has a certain degree of softness, the high-strength and low-temperature water-soluble vinylon blend ratio as the carrier should be selected at a ratio of (10-20)%. Vortex spinning is used to spin fine-count yarns, water-soluble vinylon is 1.56dtex×38mm, Tencel fiber is 1.3dtex×38mm, and cotton is 137A Xinjiang long-staple cotton.

2. Study the pre-spinning technology of Tencel and water-soluble vinylon.

Including opening and cleaning, carding, pre-drawing process technology, special parts use, gauge, speed, etc.

3. Study the mixing technology of water-soluble vinylon, tencel fiber and cotton fiber blending. Including the method of determining the blending ratio, the determination of the mixing process route, etc.

4. Research on the quality control technology of the pre-spinning process.

Including the quantitative control technology of each process of blowing, carding, drawing, and combing, the solution of the problem of fiber wrapping around the top roller, the control of temperature and humidity and other technical issues.

5. Research on the spinning technology and process parameters of carrier type vortex spinning Tencel/combed cotton blended yarn by vortex spinning equipment.

Including the selection of special equipment, selection of process parameters, tackling the problem of sticky rollers, quality indicators meeting design requirements, environmental control, etc.

2. Technical research and summary

The vortex spinning tencel/combed cotton blended yarn with high-strength low-temperature water-soluble vinylon as the carrier of the present invention adopts tencel fiber, combed long-staple cotton and high-strength low-temperature water-soluble vinylon blended, and the three kinds of fibers are respectively formed into slivers, wherein Long-staple cotton needs to be combed to make a combed sliver, which is then spun by a vortex spinning machine after three blends.

Tencel fibers have long length, good uniformity, no impurities, and short fleece. Therefore, the distance and speed configuration of the opening and cleaning unit are similar to those of polyester fiber spinning. In the process of opening and cleaning cotton, we found that it is difficult to grasp and open Tencel fibers. If the opening is too light or too heavy, it will affect the subsequent processing and the appearance of the final product. For this reason, the bale grabbing machine should grab less and more frequently, and use comb instead of beating to reduce fiber damage and short fleece. The weight of cotton laps is comparable to that of spinning cotton, which is more focused on mastering. The task of the carding process is to gradually open bundles and block fibers to make the fibers into a single fiber state. The general principle is to use light weight and slow speed to improve the quality of the carding cotton web; it is better to control the speed of the flat plate at a higher speed, and appropriately enlarge the distance between the flat plate and the cylinder, which is beneficial to reduce the generation of short fibers , to improve the uniformity of the yarn; the pressure of the rollers from the doffer to the coil part of the cotton web should be kept small, so as to prevent the raw sliver from being too tight, which is not conducive to subsequent processing. If the quantitative and speed control is not good during production, the cotton web is more likely to have holes. On the basis of light weight and slow speed, strengthen the tour and adjust the tension teeth to increase and improve the quality of the cotton web. The tension and draft of the pre-drawing creel is larger than that of pure cotton, and the pressure after drawing is smaller. Because the fibers entering the pre-merger are dominated by hooks, the pre-merge adopts a smaller draft multiple and a larger draft multiple in the rear area to straighten the rear hooks of the fibers.

Vinylon fiber has high requirements on the mechanical level of the opening and cleaning process, is sensitive to temperature and humidity, and the production state fluctuates greatly. The raw materials are opened and placed for 24 hours before use to achieve moisture absorption and release balance. It adopts the process principles of loose and light combing, gradual opening, less damage to fibers, large air volume, slow speed, large passage, anti-blocking, anti-adhesion, and enhanced uniform control. The A036 type porcupine blade is replaced by a comb roller to reduce the amount of fiber drop, and a set of dust bars above the beater inlet is replaced by an arc-shaped iron plate. Vinylon cotton laps tend to cause unclear delamination and sticky laps during the carding process. For this reason, the pressure of the compression roller can be increased to reduce the output speed of the cotton layer, and the pressure of the anti-friction gear bar can be appropriately reduced. , Properly increase the relative humidity of the workshop, and adopt simple anti-sticking measures at the compression roller. According to the characteristics of vinylon fiber, the technological principles adopted in the carding process are multi-carding, high transfer, high tension, anti-winding and anti-blocking, and reasonable speed. Carding cotton webs often have holes and broken edges during production. Increase the sharpness and flatness of the card clothing, reduce the unevenness of the laps, and narrow the feeding width of the laps, which is beneficial to the elimination of holes in the cotton web. In the pre-drawing process, since the vinylon raw sliver is relatively fluffy, the process principle of heavy pressure, strong control, and large gauge is adopted, the channel is smooth and clean, and blockage is prevented. The distribution of the friction circle must be enlarged compared with pure cotton to adapt. At the same time, the friction factor of vinylon is relatively large, and the drafting force also increases accordingly. Therefore, the drafting roller is required to have sufficient holding force to effectively control the fibers and reduce floating fibers. In the pre-drawing process, there is a phenomenon of winding rollers around the rubber rollers. Therefore, the following measures should be taken: (1) The hardness of the rubber rollers should be large and the surface should be smooth; (2) Select a collector with an appropriate opening size; (3) Adjust the cashmere loop adjustment bracket to increase the contact surface between the pile loop and the rubber roller, fully clean the sticky fiber on the high-speed top roller, and reduce small defects in the yarn; (4) wipe the rubber roller twice with clean water in each shift to keep the rubber roller clean.

Cotton fibers are made of 137A long-staple cotton, which is made into combed slivers after opening and cleaning, carding, pre-drawing, sliver winding, and combing. The process adopts the process principle of "proper gauge, small tension, light quantity, slow speed, and multiple merging", reduces the speed (the stripping speed is 200m/min), reduces the tension draft, and the rubber roller adopts special antistatic treatment nylon 6 coated rubber rollers to ensure smooth driving. The vortex spinning process adopts the process principle of "proper gauge and low speed", and adopts antistatic and illuminated top rollers to prevent winding and tangle, so as to ensure stable yarn quality.

The development process of the present invention is summarized as follows:

1. Selection of spinning raw materials

In order to improve the strength of vortex spinning, increase the fineness of the yarn, and reduce the hardness of the yarn, the product of this project uses high-strength and low-temperature water-soluble vinylon as the carrier, which is blended with Tencel fiber and cotton fiber. Among them, the high-strength low-temperature water-soluble vinylon is selected from 1.56dtex×38mm, the tencel fiber is selected from 1.3dtex×38mm, and the cotton fiber is selected from 137A Xinjiang long-staple cotton.

2. Raw material pretreatment technology

Vinylon fiber has high requirements on the mechanical level of the opening and cleaning process, is sensitive to temperature and humidity, and the production state fluctuates greatly. Before use, the raw materials need to be opened and placed for 24 hours to achieve moisture absorption and release balance.

3. Product specifications

Carrier vortex spinning TEL LF45/combed long-staple cotton 45/water-soluble vinylon 1072 ^S K. The blending ratio is 45:45:10, and the carrier type vortex spinning knitting yarn is 72 British counts.

4. Spinning process route

High-strength and low-temperature water-soluble vinylon, Tencel, and long-staple cotton are respectively opened and cleaned, carded into slivers, and pre-drawn. The slivers of different components are blended in three steps according to the blending ratio to make mature slivers, and then vortex spinning to make the required yarns.

5. Optimization of the previous spinning process

Tencel fiber adopts the process of frequent grasping, less grasping, less blowing, and combing instead of beating in the opening and cleaning of cotton; the carding process adopts light weight, slow speed, and high cover speed to improve the quality of the cotton web and appropriately enlarge the cover. The gap between the board and the cylinder is beneficial to reduce the generation of short fibers and improve the uniformity of the yarn; the pre-drawing process adopts a small draft multiple and a large draft in the back area to straighten the back hook fiber. The vinylon fiber is opened and placed for 24 hours to reach the balance of moisture absorption and desorption before use. In the opening and cleaning process, it adopts loose and light beating, gradual opening, less fiber damage, large air volume, slow speed, large channel, anti-blocking, spinning adhesion, and reinforcement Uniform control process; the carding process adopts the process of multi-combing, fast transfer, large tension, anti-winding and anti-blocking, and reasonable speed; the process principle of heavy pressure, strong control, and large gauge is adopted in the pre-drawing process. The cotton fiber is 137A Xinjiang long-staple cotton, which has a longer fiber length than fine-staple cotton and a slightly higher impurity content. The cotton opening and cleaning process adopts the technological measures of frequent grasping, less grasping, proper blowing, early falling and less breaking, and combing instead of beating. The carding process adopts a tight gauge and a slightly lower speed to ensure the carding effect and reduce fiber damage. At the same time, the flat speed is appropriately increased to remove more impurities and short fibers. The combing process adopts the technology of back feeding and lower speed, and the noil rate is controlled at about 18%. The drawing process adopts the process principle of "small tension, light weight, slow speed, and multiple merging". The drive was smooth.

6. Optimization of subsequent spinning process

The vortex spinning process adopts the process of "proper pressure, reasonable gauge, and slow speed", adopts imported anti-static top rollers, anti-winding and anti-winding, reduces the speed (the output speed is about 300m/min), and ensures the stability of the yarn quality.

7. Product quality indicators

Carrier vortex spinning TEL LF45/combed long-staple cotton 45/water-soluble vinylon 1072 ^S K:

Single yarn breaking strength: 16.2cN/tex;

Single yarn breaking strength coefficient of variation CV%: 12.2;

Weight coefficient of variation per hundred meters CV%: 0.8;

Weight deviation% per 100 meters: -0.8;

Evenness coefficient of variation CV%: 18.7;

Blackboard neps: 12 grains/g;

Hairiness index H: 3.5

The inspected items conform to the first-class product standard of FZ/T12007-2005 "Cotton-dimensional blended natural color yarn".

Claims (3)

1. carrier type vortex spinning tencel/combed cotton blended yarn, is characterized in that raw material choice method is:

Use high-strength low-temperature water-soluble polyvinyl as carrier, with tencel fiber, cotton fiber blending；

1.56dtex × 38mm selected by the most high-strength low-temperature water-soluble polyvinyl,

Tencel fiber selects 1.3dtex × 38mm,

Cotton fiber selects 137A grade Xinjiang Long staple cotton；

The most high-strength low-temperature water-soluble polyvinyl blending ratio is 10%～20%；

The Yarn spinning method of described carrier type vortex spinning tencel/combed cotton blended yarn is:

High-strength low-temperature water-soluble polyvinyl, tencel, long-staple cotton become bar, pre-drawing through opening picking, comb and parallel cotton fibers prior to spinning respectively；Its Midlle-longstaple cotton pre-drawing again through bar and roll up, yarn is made in combing；

The strip of three kinds of compositions is made ripe bar by blending ratio after three roads are mixed also, then becomes required through vortex spinning for spinning Yarn；

A, the tencel fiber technological requirement in opening picking step includes:

Beater Speed 550 ± the 50r/min of FA106 type opener；The comprehensive Beater Speed of A076C type lapper It is 700 ± 70r/min；Lap designs quantification of 485 ± 50g/m；Lap length 30.6 ± 3m；

Tencel fiber technological requirement in carding step includes:

Cylinder～Flat Gauge 8 × 7 × 7 × 7 × 8 "；Cylinder speed 340 ± 30r/min；Licker-in speed is 680 ±70r/min；Doffer speed is 23 ± 2r/min；Cover plate speed is 80 ± 8mm/min；Mote knife position: Flat, 90 °；Weight of card sliver 25 ± 2g/5m；

Tencel fiber technological requirement in pre-drawing operation includes:

Combined roots 6；First break draft 1.7；Total draft multiple: 6.12；Space 11 × 18mm；Speed 200 ± 20m/min；Quantitative 24.5 ± 2g/5m；

B, soluble vinylon fiber shredding are placed, until it reaches moisture adsorption and releasing balance re-uses；Water soluble vinylon is fine Dimension technological requirement in opening picking step includes:

Beater Speed 540 ± the 50r/min of FA106 type opener；The comprehensive Beater Speed of A076C type lapper It is 750 ± 70r/min；Lap designs quantification of 338 ± 30g/m；Lap length 30.6 ± 3m；

Soluble vinylon fiber technological requirement in carding step includes:

Cylinder～Flat Gauge 9 × 8 × 8 × 8 × 9 "；Cylinder speed 360 ± 30r/min；Licker-in speed is 700 ±70r/min；Doffer speed is 24 ± 2r/min；Cover plate speed is 84 ± 8mm/min；Mote knife position: Flat, 90 °；Weight of card sliver 20 ± 2g/5m；

Soluble vinylon fiber technological requirement in pre-drawing operation includes:

Combined roots 6；First break draft 1.7；Total draft multiple: 7.74 times；Space 11 × 18mm；Speed 200 ±20m/min；Quantitative 15.5 ± 1g/5m；

C, cotton fiber use the Xinjiang Long staple cotton of 137A grade, cotton fiber technological requirement in opening picking step Including:

Beater Speed 500 ± the 50r/min of FA106B type opener；The comprehensive Beater Speed of A076C type lapper It is 900 ± 90r/min；Lap designs quantification of 350 ± 30g/m；Lap length 38.33 ± 3m；Lap returns Tide rate 8.2%；

Cotton fiber technological requirement in carding step includes:

Cylinder～Flat Gauge 7 × 6 × 6 × 6 × 7 "；Cylinder speed 360 ± 30r/min；Licker-in speed is 720±70r/min；Doffer speed is 34.5 ± 3r/min；Cover plate speed is 280 ± 20mm/min；Mote knife Position: flat, 90 °；Quantitative 16 ± the 1g/5m of weight in wet base；Regain 7%；

Again after bar volume, carry out combing and make yarn；

In combing process, linters rate controls 18 ± 1.8%；

Fiber technological requirement in combing process includes:

Speed: 215 ± 20 pincers beat/min；Regain: 6.5%；Linters rate 16 ± 1.6%；Weight in wet base quantitative 23.5 ±2g/5m；

The strip of three kinds of compositions is made ripe bar by blending ratio after three roads are mixed also, then becomes required through vortex spinning for spinning Yarn, wherein:

The technological requirement of mixing in doubling step includes:

Sliver exporting speed is 200 ± 20m/min, rubber roll uses nylon coating antistatic roller；

The technological requirement of vortex spinning operation includes:

Output speed is 300 ± 30m/min.

Carrier type vortex spinning tencel/combed cotton blended yarn the most according to claim 1, is characterized in that raw material Pre-treating method be: before use, high-strength low-temperature water-soluble polyvinyl need shredding place 24h reach moisture adsorption and releasing put down Weighing apparatus.

Carrier type vortex spinning tencel/combed cotton blended yarn the most according to claim 1, is characterized in that this is mixed The specification of spinning is: tencel fiber LF45/ combed long staple cotton 45/ water soluble vinylon 10 72^SK；Blending ratio 45:45:10,72 English prop up carrier type vortex spinning stocking yarn.