1. A production process of a pure spun yarn of elastic short fibers of a comfortable elastic silk is characterized by comprising the working procedures of blowing → carding → drawing → roving → spun yarn → spooling, wherein,

the flow of the blowing process is a plucker → a mixing opener → a cleaning opener → a cotton carding machine, and the comfortable stretch elastic short-staple cotton flow is fed into the cotton carding machine in an oxquan cotton form by a cotton conveying pipeline;

the carding gauge of the carding process is as follows: the spacing between the cylinder and the cover plate is 10, 9 and 8 per thousand of English wires, and the spacing between the cylinder and the doffer is 7 to 9 per thousand of English wires;

the first total draft multiple of the drawing process is 5.42-6.15 times, and the last total draft multiple is 5.78-6.03 times; the total draft multiple of the roving process is 6.5-7.5 times;

in the spinning process, a mechanical compact spinning device is used for physically gathering the drafted fiber strands.

2. The process according to claim 1, wherein the size of the elastic staple of lycra is 1.5D 38mm and/or 1.8D 38 mm.

3. The production process according to claim 1, wherein the blowing process is carried out under the conditions of a temperature of 25-28 ℃, a humidity of 72-75%, a blowing speed of 720r/min for a plucker, a blowing speed of 480r/min for a carding needle type blowing hand for a scutcher, and a flow of the cotton loosened by the scutcher is conveyed to a carding machine through a cotton conveying pipeline with a pressure of 750 Mpa.

4. The production process according to claim 1, wherein the carding needles of the carding process are configured as cylinders AC2520 x 01650P, flats MCB40SD, lickers AT5610 x 05611, doffers AD4030 x 01890; the production conditions are that the temperature is 28-33 ℃, the humidity is 65-70%, the cylinder speed is 360r/min, the licker-in speed is 809r/min, and the tin-thorn ratio is 2.3: 1, the cover plate speed is 14.1mm/min, and the vehicle speed is 52 m/min; the spacing between the licker-in and the cotton feeding plate is 12-15 per thousand of English filaments, the spacing between the licker-in and the cylinder is 9-12 per thousand of English filaments, the web tension is drafted by 1.17 times, and the cotton carding ration is 16.00-17.50 g/5 m.

5. The production process according to claim 1, wherein the drawing process is carried out under conditions of a temperature of 27 to 32 ℃ and a humidity of 62 to 68%, the drafting roller is treated with the composite coating, the fixed quantity is 17.80 to 18.10g/5m, the vehicle speed is 185m/min, the number of the drafting rollers is 6, the drafting gauge is 11mm × 25mm, the bell mouth is 2.6 to 2.8mm, the drafting multiple of the rear zone is 1.88 to 1.66 times, the loop tension is 1.003 times, the front tension is 1.005 times, the rear tension is 1.008 times, the guide tension is 0.9929 times, and the cradle pressure is 300 to 350N.

6. The production process of claim 1, wherein the roving process is carried out under the conditions of a temperature of 28-33 ℃ and a humidity of 58-62%, and a weight ratio of 1: 10 the composite coating is used for treating the drafting roller, the fixed quantity is 4.83-5.50 g/10m, the drafting gauge is 11mm multiplied by 26mm multiplied by 34mm, the rear drafting multiple is 1.174-1.24 times, the twist coefficient is 85-95, the vehicle speed is 130-150 r/min, and the cradle is pressurized at 130-135N.

7. The production process as claimed in claim 1, wherein the spinning process is carried out under conditions of 31-33 ℃ of temperature, 62-65% of humidity, 1.17-1.24 times of back draft, 160-185 r/min of front roller speed, 2.25-3.0 mm front pressure bar of nip, 185CN ± 5 cradle pressure, PG 14254 ring and 69038-690312/0 # of traveler.

8. The production process according to claim 1, wherein the spooling process is carried out under the conditions of a temperature of 28-30 ℃, a humidity of 68-72% and a vehicle speed of 900-1100 m/min; bobbin hardness "- -", self-winding tension voltage 4V/2V/1V, electrical cleaning parameters are N: 210-230%, S: 110%/1.1-130%/1.3, L: 20%/20-30%/30, T: -30%/30 to-40%/40, C ±: 10%/2.0-15%/2.0, CC ±: 12%/5.0-18%/5.0.

9. A pure spun yarn of elastic staple fibers of stretch yarn produced by the production process according to any one of claims 1 to 8.

10. The spun yarn of claim 9, wherein the content of the elastic staple fibers is more than 99.99%.

Background

With the improvement of living standard and the acceleration of life rhythm, people pursue fashion, and meanwhile, the functional fabric which is elastic, comfortable and easy to be processed is also highly appreciated by consumers. Most of the traditional elastic easy-to-handle fabrics in the market mainly adopt spandex core-spun production, but the spandex elastic fabrics have the problems of serious bulging, loosening and deformation and the like after being worn and washed for many times, so that the grade and wearing comfort of the products are reduced, and the products cannot meet the current market demands at present.

The elastic short fiber of the comfortable stretch yarn, as a bio-based synthetic fiber from plants, has a natural three-dimensional spiral structure and an 8-shaped section, has good chemical resistance and durability, and the birth of the elastic short fiber thoroughly changes the history that the elastic short fiber cannot be applied to spinning, thereby laying a foundation for improving the comfortable elasticity, shape retention and fluffy feeling of the fabric. The elastic short fiber of the comfortable stretch yarn can be widely applied to fabrics of knitted clothing, woven clothing, home textiles and the like, the fabrics are elastic, comfortable, durable and easy to manage, can meet the consumption requirements of consumers on simplicity, comfort, crease resistance and shape retention, and has wide development prospect.

At present, the production technology of elastic short fiber spinning of the elastic yarn in the industry is produced by package mixing, such as: in order to solve the difficulty that the Shu stretch yarn fiber is not easy to be independently coiled, the Chinese patent application CN107488909A is to mix the Shu stretch yarn fiber and the cotton fiber according to a certain proportion, pack the mixture and then arrange the package for production; the Chinese patent application CN109629062A provides a production method of elastic comfortable stretch yarn blended yarns, which is characterized in that wool and wool braising pretreatment is carried out by adding wool oil and antistatic agent into elastic comfortable stretch yarns and other textile raw materials. The two processing methods of the comfortable and elastic silk fiber adopt the comfortable and elastic silk fiber and other fibers to be wrapped and mixed according to a certain proportion, and then the production is carried out according to the conventional processing method, the processing technology has the advantages of large material consumption, long process flow, high labor intensity of workers, low production efficiency, more hidden quality troubles, inconvenient regulation of different blending proportion varieties and incapability of meeting the requirements of large-scale and large-batch production.

Therefore, it is necessary to invent a production process for pure spinning slivers of the elastic staple fibers to break through the technical bottleneck that pure spinning slivers cannot be produced in the elastic staple fiber industry of the elastic staple fibers, and to solve the defects of the processing technology.

Disclosure of Invention

Aiming at the technical problem that pure spinning can not be carried out in the existing stage of the comfortable and elastic short fiber industry, the invention provides the comfortable and elastic short fiber pure spinning yarn and the production process thereof, which powerfully reduce the raw material consumption, shorten the process flow, effectively reduce the production labor intensity, improve the production efficiency and enable the subsequent production of the comfortable and elastic short fiber mixed process to be more flexible and convenient.

In a first aspect, the invention provides a process for producing a pure spun yarn of a soft elastic staple fiber, comprising the steps of blowing → carding → drawing → roving → spinning → spooling, wherein,

the flow of the blowing process is a plucker → a mixing opener → a cleaning opener → a cotton carding machine, and the comfortable stretch elastic short-staple cotton flow is fed into the cotton carding machine in an oxquan cotton form by a cotton conveying pipeline;

the carding gauge of the carding process is as follows: the spacing between the cylinder and the cover plate is 10, 9 and 8 per thousand of English wires, and the spacing between the cylinder and the doffer is 7 to 9 per thousand of English wires;

the first total draft multiple of the drawing process is 5.42-6.15 times, and the last total draft multiple is 5.78-6.03 times; the total draft multiple of the roving process is 6.5-7.5 times;

in the spinning process, a mechanical compact spinning device is used for physically gathering the drafted fiber strands.

Further, the used elastic staple fibers of the elastic yarn have a size of 1.5D 38mm and/or 1.8D 38 mm.

Furthermore, the production conditions of the blowing process are that the temperature is 25-28 ℃, the humidity is 72-75%, the beating speed of a plucker is 720r/min, the beating speed of a scutcher is 480r/min, the cotton flow loosened by the scutcher is conveyed to a carding machine through a cotton conveying pipeline, and the pressure of the cotton conveying pipeline is 750 Mpa.

Furthermore, the carding process adopts the process principle of light weight, low vehicle speed, small tension, flexible carding and fast transfer, and carding needles are configured to be cylinders AC2520 × 01650P, a cover plate MCB40SD, licker-in AT5610 × 05611 and doffers AD4030 × 01890; the production conditions are that the temperature is 28-33 ℃, the humidity is 65-70%, the cylinder speed is 360r/min, the licker-in speed is 809r/min, and the tin-thorn ratio is 2.3: 1, the cover plate speed is 14.1mm/min, and the vehicle speed is 52 m/min; the spacing between the licker-in and the cotton feeding plate is 12-15 per thousand of English filaments, the spacing between the licker-in and the cylinder is 9-12 per thousand of English filaments, the web tension is drafted by 1.17 times, and the cotton carding ration is 16.00-17.50 g/5 m.

Furthermore, the drawing process adopts the process principle of 'less drawing, small drafting, low tension and tight aggregation', the production conditions are that the temperature is 27-32 ℃ and the humidity is 62-68%, the drafting roller is treated by using the composite coating, the elastic fiber has the characteristic of drafting retraction, the drawing process needs to strictly control the total drafting multiple, the fixed quantity is 17.80-18.10 g/5m, the vehicle speed is 185m/min, the number of the drawing is 6, the drafting spacing is 11mm multiplied by 25mm, the bell mouth is 2.6-2.8 mm, the drafting multiple of the rear area is 1.88-1.66 times, the tension of the loop is 1.003 times, the front tension is 1.005 times, the rear tension is 1.008 times, the tension of the guide bar is 0.9929 times, and the cradle pressure is 300-350N.

Further, the roving process adopts a process principle of 'small draft, low tension and large twist coefficient', the production conditions are that the temperature is 28-33 ℃, the humidity is 58-62%, and the weight ratio of 1: 10 the composite coating is used for treating the drafting roller, the sampling amount is 4.83-5.50 g/10m, the drafting gauge is 11mm multiplied by 26mm multiplied by 34mm, the rear drafting multiple is 1.174-1.24 times, the twist coefficient is 85-95, the vehicle speed is 130-150 r/min, and the cradle is pressurized at 130-135N.

Furthermore, the elastic and large retractility of the stretch yarn fiber is strong, the fiber and the fiber aggregate after the drawing of the spun yarn can be rapidly contracted after being separated from the front jaw control, and part of the edge fiber is contracted into hairiness, the production conditions of the spinning process are 31-33 ℃, the humidity is 62-65%, the rear stretching multiple is 1.17-1.24 times, the speed of a front roller is 160-185 r/min, the front pressure rod is 2.25-3.0 mm in the jaw, the cradle pressure is 185CN +/-5, the steel collar PG 14254, and the steel wire ring is 69038 # 690312/0.

Further, in order to reduce friction and reduce the hair feather growth rate, the spooling process adopts a process principle of low vehicle speed and low tension, and the production conditions are that the temperature is 28-30 ℃, the humidity is 68-72%, and the vehicle speed is 900-1100 m/min; bobbin hardness "- -", self-winding tension voltage 4V/2V/1V, electrical cleaning parameters are N: 210-230%, S: 110%/1.1-130%/1.3, L: 20%/20-30%/30, T: -30%/30 to-40%/40, C ±: 10%/2.0-15%/2.0, CC ±: 12%/5.0-18%/5.0.

In a second aspect, the invention provides a pure spun yarn of the elastic staple fiber of the stretch yarn, which is produced by the production process.

Furthermore, the content of the elastic short fibers is more than 99.99 percent.

The beneficial effect of the invention is that,

the production process comprises the working procedures of blowing → cotton carding → drawing → roving → spun yarn → spooling, wherein the blowing working procedure is more than the traditional blowing working procedure (plucker → mixed opener → biaxial flow opener → multi-bin mixer → opener → vibration feeder → single beater → carding machine), the biaxial flow opener, the multi-bin mixer, the vibration feeder and the single beater lapper are saved, because the elastic short fiber of the elastic staple fiber of the elastic fiber of the cotton can be greatly reduced, the elastic fiber of the elastic fiber, the impact fiber, the beating, the striking point and the striking, shortening the striking, the striking point and the beating, the striking force of the beating, the striking force of the production process of the beating, the coiling, the production process of the short fiber of the production process of the cotton flow of the cotton, can be reduced, the coiling, the cotton flow of the cotton, the cotton of the cotton, the cotton flow of the cotton, the invention, the cotton, the invention, the cotton of, The industrial problem that the coiling cannot be carried out due to strong retractility; the carding process carries out optimal design on the process spacing, and solves the industrial problem that the elastic short fiber of the comfortable stretch yarn cannot be spun into strips; drawing and roving processes strictly control the drafting multiple, and the problem of fiber retraction caused by the drafting, drawing and thinning processes of the semi-finished product of the elastic short fiber of the elastic textured yarn is solved; in the spinning process, a mechanical compact spinning device is used for physically gathering the drafted fiber strands, so that the problem of high yarn surface hairiness of the elastic fiber due to fiber retraction is solved, the hairiness is improved, and the yarn smoothness is improved.

The production process breaks through the technical bottleneck that the elastic short fiber of the soft elastic yarn can not be purely spun into strips in the current industry, fills the market blank, solves a series of production problems that the elastic short fiber of the soft elastic yarn can not be coiled and formed into strips, the fiber retractility is high, the spinnability is poor, yarn hairiness is high and the like, powerfully reduces the raw material consumption, shortens the process flow, effectively reduces the production labor intensity, improves the production efficiency, enables the subsequent mixed process production of the soft elastic yarn strips to be more flexible and convenient, lays a foundation for the batch and large-scale production of the elastic short fiber of the soft elastic yarn, and provides a wider application space for the product of the elastic short fiber of the soft elastic yarn.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The 50-count yarn is produced by using 1.5 Dx38 mm elastic short fiber of the stretch yarn according to the working procedures of blowing → carding → drawing → roving → spinning → spooling, and the specific production process is as follows:

a, clearing the flower: the blowing process is FA002 plucker → FA016 mixing opener → FA106 cleaning opener → FA201B cotton carding machine, the fluffy elastic short fiber cotton flow is fed into the cotton carding machine in the mode of the oxtongue cotton by a cotton conveying pipeline;

the production conditions comprise that the temperature is 25-28 ℃, the humidity is 72-75%, the beating speed of a plucker is 720r/min, the beating speed of a cleaning and opening machine is 480r/min, the cotton flow loosened by the cleaning and opening machine is conveyed to a carding machine through a cotton conveying pipeline, and the pressure of the cotton conveying pipeline is 750 Mpa;

b, cotton carding: the method adopts the process principle of 'light quantification, low vehicle speed, small tension, flexible carding and fast transfer', the production conditions are that the temperature is 28-33 ℃ and the humidity is 65-70%, and the configuration and the carding gauge of the carding card clothing are preferably designed: cylinder AC2520 × 01650P, cover plate MCB40SD, licker-in AT5610 × 05611, doffer AD4030 × 01890; the spacing between the cylinder and the cover plate is 10, 9 and 8 per thousand of English wires, and the spacing between the cylinder and the doffer is 7 to 9 per thousand of English wires; the cylinder speed is 360r/min, the licker-in speed is 809r/min, and the tin-to-burr ratio is 2.3: 1, the cover plate speed is 14.1mm/min, and the vehicle speed is 52 m/min; the spacing between the licker-in and the cotton feeding plate is 12-15 per thousand of English filaments, the spacing between the licker-in and the cylinder is 9-12 per thousand of English filaments, the tension of the web is drafted by 1.17 times, and the cotton carding ration is 17.00g/5 m;

c, drawing: the production conditions of the method are that the temperature is 27-32 ℃, the humidity is 62-68%, the drafting leather roller is treated by using a composite coating (a spinning rubber roller colorless quick coating WSN-II produced by Binzhou kumquat rubber products, the component A in the coating is 1: 5), the first quantitative rate is 17.80g/5m, the vehicle speed is 185m/min, the number of combined pieces is 6, the drafting spacing is 11mm multiplied by 25mm, the bell mouth is 2.6mm, the total drafting multiple is 5.73 times, the back zone drafting multiple is 1.88 times, the loop tension is 1.003 times, the front tension is 1.005 times, the back tension is 1.008 times, the guide strip tension is 0.9929 times, and the cradle pressure is 300-350N; the last yarn is 18.00g/5m in fixed quantity, the vehicle speed is 185m/min, the number of combined yarns is 6, the drafting gauge is 11mm multiplied by 25mm, the bell mouth is 2.6mm, the total drafting multiple is 5.93 times, the drafting multiple of the rear area is 1.77 times, the tension of the coil is 1.003 times, the front tension is 1.005 times, the rear tension is 1.008 times, the tension of the guide strip is 0.9929 times, and the pressure of a cradle is 300-350N;

d, roving: the method adopts the process principle of 'small drafting, low tension and large twist factor', the production conditions are that the temperature is 28-33 ℃, the humidity is 58-62%, a composite coating (a spinning rubber roll colorless rapid coating WSN-II produced by Jinbo rubber products Limited company in Binzhou, the component A in the coating is 1: 10) is used for treating a drafting leather roll, the quantity is 4.83g/10m, the drafting distance is 11mm multiplied by 26mm multiplied by 34mm, the total drafting multiple is 7.42 times, the rear drafting multiple is 1.174 times, the twist factor is 95, the vehicle speed is 130r/min, and the cradle is pressurized to 130-135N;

e, spinning: using a mechanical compact spinning device to physically gather the drafted fiber strands; the production conditions comprise the temperature of 31-33 ℃, the humidity of 62-65%, the back draft multiple of 1.17 times, the speed of a front roller of 175r/min, a front pressure bar with a jaw of 2.25mm, the cradle pressure of 185CN +/-5, a steel collar PG 14254 and a steel traveler 690312/0;

f, spooling: the method is characterized in that a Toyota NO.21C automatic winder is used, a process principle of low speed and low tension is adopted, and the production conditions are that the temperature is 28-30 ℃, the humidity is 68-72%, and the speed is 900 m/min; bobbin hardness "- -", self-winding tension voltage 4V/2V/1V, electrical cleaning parameters are N: 210%, S: 110%/1.1, L: 20%/20, T: -30%/30, C ±: 10%/2.0, CC ±: 12%/5.0.

The prepared Shu stretch yarn pure spinning compact spinning 50 yarns are detected by GB/T3292.1-2008 (capacitance method) and GB/T3916-2013 (method B), and the detection results are shown in the following table 1:

table 1 example 1 test results

The elastic yarn is spun by 50 yarns in a pure spinning compact mode, and the quality of the yarn is excellent, so that the expected effect of fabric development is completely achieved.

Example 2

A Shu 'an elastic silk pure spinning compact spinning 32 yarns is produced by using 1.8 Dx38 mm Shu' an elastic short fiber according to the working procedures of blowing → carding → drawing → roving → spun yarn → spooling, and the specific production process is as follows:

a, clearing the flower: the blowing process is FA002 plucker → FA016 mixing opener → FA106 cleaning opener → FA201B cotton carding machine, the fluffy elastic short fiber cotton flow is fed into the cotton carding machine in the mode of the oxtongue cotton by a cotton conveying pipeline;

the production conditions comprise that the temperature is 25-28 ℃, the humidity is 72-75%, the beating speed of a plucker is 720r/min, the beating speed of a cleaning and opening machine is 480r/min, the cotton flow loosened by the cleaning and opening machine is conveyed to a carding machine through a cotton conveying pipeline, and the pressure of the cotton conveying pipeline is 750 Mpa;

b, cotton carding: the method adopts the process principle of 'light quantification, low vehicle speed, small tension, flexible carding and fast transfer', the production conditions are that the temperature is 28-33 ℃ and the humidity is 65-70%, and the configuration and the carding gauge of the carding card clothing are preferably designed: cylinder AC2520 × 01650P, cover plate MCB40SD, licker-in AT5610 × 05611, doffer AD4030 × 01890; the cylinder speed is 360r/min, the licker-in speed is 809r/min, and the tin-to-burr ratio is 2.3: 1, the cover plate speed is 14.1mm/min, and the vehicle speed is 52 m/min; the spacing between the licker-in and the cotton feeding plate is 12-15 per thousand of English filaments, the spacing between the licker-in and the cylinder is 9-12 per thousand of English filaments, the web tension is drafted by 1.17 times, and the cotton carding ration is 17.50g/5 m.

c, drawing: the method adopts the process principle of 'less merging, small drafting, low tension and tight concentration' and has the production conditions that the temperature is 27-32 ℃ and the humidity is 62-68%, composite coating (spinning rubber roll colorless quick coating WSN-II produced by Binzhou kungbo rubber product Limited liability company, component A in the coating is 1: 5) is used for treating the drawing leather roll head way and the drawing ration is 17.80g/5m, the vehicle speed is 185m/min, the merging number is 6, the drawing gauge is 11mm multiplied by 25mm, the bell mouth is 2.6mm, the total drawing multiple is 5.89 times, the back zone drawing multiple is 1.77 times, the loop tension is 1.003 times, the front tension is 1.005 times, the back tension is 1.008 times, the guide tension is 0.9929 times and the cradle pressure is 300-350N; the final ration is 18.10g/5m, the vehicle speed is 185m/min, the number of the combined yarns is 6, the drafting gauge is 11mm multiplied by 25mm, the bell mouth is 2.8mm, the total drafting multiple is 5.90 times, the drafting multiple of the rear area is 1.66 times, the tension of the coil is 1.003 times, the front tension is 1.005 times, the rear tension is 1.008 times, the tension of the guide bar is 0.9929 times, and the cradle pressure is 300-350N.

d, roving: the method adopts the process principle of 'small drafting, low tension and large twist factor', the production conditions are that the temperature is 28-33 ℃, the humidity is 58-62%, a composite coating (a colorless rapid coating WSN-II for a spinning rubber roll produced by Jinbo rubber products Limited company in Binzhou, the component A in the coating is 1: 10) is used for treating a drafting leather roll, the collection quantity is 5.50g/10m, the drafting distance is 11mm multiplied by 26mm multiplied by 34mm, the total drafting multiple is 6.56 times, the rear drafting multiple is 1.24 times, the twist factor is 85, the vehicle speed is 150r/min, and the cradle is pressurized to 130-135N.

e, spinning: using a mechanical compact spinning device to physically gather the drafted fiber strands; the production conditions are 31-33 ℃ of temperature, 62-65% of humidity, 1.24 times of back drawing multiple, 185r/min of front roller speed, 3.0mm front pressure bar of jaw, 185CN +/-5 of cradle pressure, PG 14254 of steel collar and 69038 # of steel traveler.

f, spooling: the method is characterized in that an automatic winder of Toyota NO.21C is used, a process principle of low vehicle speed and small tension is adopted, and the production conditions are that the temperature is 28-30 ℃, the humidity is 68-72%, and the vehicle speed is 1100 m/min; bobbin hardness "- -", self-winding tension voltage 4V/2V/1V, electrical cleaning parameters are N: 230%, S: 130%/1.3, L: 30%/30, T: -40%/40, C ±: 15%/2.0, CC ±: 18%/5.0.

The manufactured stretch yarn pure-spun compact spun 32 yarns are detected by GB/T3292.1-2008 (capacitance method) and GB/T3916-2013 (method B), and the detection results are shown in the following table 2:

table 2 example 2 test results

The comfortable stretch yarn is spun by pure spinning and compact spinning of 32 yarns, and the quality of the yarns is excellent, so that the expected effect of fabric development is completely achieved.

Although the present invention has been described in detail by way of preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention.