CN116575157A - A kind of viscose, acrylic fiber, fine cotton blended yarn and preparation method thereof - Google Patents

Abstract

The invention discloses a viscose, acrylic fiber and fine cotton blended yarn and a preparation method thereof, wherein the preparation method comprises: preparing cotton combed sliver; preparing viscose and acrylic fiber mixed fiber pre-drawing; viscose and acrylic fiber mixed fiber The pre-drawing and cotton combed slivers are mixed to obtain mixed fiber drawing; the mixed fiber drawing is sequentially subjected to coarse sanding process, spinning process and winding process to obtain viscose, acrylic fiber and fine cotton blended yarn. The preparation method of the present invention is easy to operate, convenient and fast, and has strong operability. The respective properties of the three fibers in the prepared viscose, acrylic fiber, and fine cotton blended yarn can complement each other, and the excellent properties of various fibers are fully brought into play. Not only the fiber structure of the blended yarn is optimized, the spinnability is high, but also the warmth retention, moisture absorption, air permeability, comfort and shape retention of the fabric are perfectly unified, and it has a wide application prospect in the development of underwear fabrics.

Description

A kind of viscose, acrylic fiber, fine cotton blended yarn and preparation method thereof

technical field

The invention discloses a viscose, acrylic fiber and fine cotton blended yarn and a preparation method thereof, belonging to the technical field of cotton textiles.

Background technique

Viscose fiber has the advantages of good hygroscopicity, harmless to the human body, and is not easy to generate static electricity. The fabric made of it is soft, smooth, and has good air permeability, but its warmth retention is not good, and the wet modulus of viscose fiber is low. High rate, easy to deform, poor wear resistance; acrylic fiber density is small, fluffy structure, good warmth, soft feel, high elasticity, the disadvantage is poor hygroscopicity, easy to generate static electricity, poor spinnability; cotton The fiber has good spinnability, high strength and good air permeability, but the cotton fabric has poor shape retention. The properties of viscose, acrylic and cotton fibers are integrated to complement each other, giving full play to the excellent properties of various fibers, not only optimizing the fiber structure of blended yarns, high spinnability, but also making the fabric warm and moisture Sex, breathability, comfort, and shape retention have been perfectly unified, and it has broad application prospects in the development of underwear fabrics.

In the prior art, since the raw cotton fiber contains more impurities and short fibers, and the surface of the viscose and acrylic fibers is clean and smooth, the prepared viscose, acrylic and fine cotton blended yarns have poor mixing uniformity and are difficult to dye evenly.

Contents of the invention

The purpose of this application is to provide a kind of viscose, acrylic fiber, fine cotton blended yarn and its preparation method, to solve the poor mixing uniformity and difficulty in uniform dyeing of viscose, acrylic fiber, fine cotton blended yarn in the prior art. technical issues.

The first aspect of the present invention provides a kind of preparation method of viscose glue, acrylic fiber, fine cotton blended yarn, comprising:

Step S1, preparing cotton combed slivers;

Step S2, preparing viscose and acrylic mixed fiber pre-drawing;

Step S3, sliver-blending the viscose and acrylic mixed fiber pre-drawing and cotton combed slivers to obtain the mixed fiber drawing;

Step S4, performing a coarse sanding process, a spinning process and a winding process on the drawing of the mixed fibers in sequence to obtain viscose, acrylic and fine cotton blended yarns.

Preferably, the step S2 specifically includes:

Prepare a baled mixture of viscose and acrylic fibers;

opening the baled mixture and preparing laps;

The laps are carded into strips by a carding machine and then fed into a drawing frame to obtain a pre-drawing of viscose and acrylic mixed fibers.

Preferably, the weight percentage of the viscose fiber, acrylic fiber and the cotton combed sliver is 40-50:25-30:25-35;

The cotton fibers used in the combed cotton slivers have a length of 29-30 mm and a micronaire value of 2.8-3.3.

Preferably, the step S1 specifically includes:

Cotton fibers are sequentially mixed and opened, carded and then fed to the drawing frame to obtain pre-drawn cotton fibers;

The cotton fiber is pre-drawn and fed into a combing machine to obtain a cotton combed sliver;

The mixing and opening specifically includes: feeding the cotton fibers into a blender, a single-axial flow opener and a card opener in sequence for mixing and opening.

Preferably, the beater speed of the blender is 200-300r/min;

The beater speed of the uniaxial flow opener is 700-800r/min;

The beating speed of the card opener is 300-400r/min.

Preferably, the carding machine used for carding has a cylinder speed of 300-350r/min, a licker-in speed of 650-750r/min, and a doffer speed of 30-35r/min;

The linear speed of the drawing frame is 350～450r/min;

The carding speed of the comber is 1000-1200r/min.

Preferably, the step S3 specifically includes:

Mixing M viscose, acrylic mixed fiber pre-drawing and N cotton combed slivers to obtain a mixed drawing, wherein M>2N;

Mixing the multiple parallel draws to obtain the mixed two draws;

A plurality of said mixed fibers are drawn for three times to obtain said mixed fibers.

Preferably, the total draft ratio of the mixing is 7-10 times, and the sliver weight is 15-20g/5m;

The total draft ratio of the mixed two is 5 to 8 times, and the sliver weight is 14 to 18g/5m;

The total drafting ratio of the blend is 5-7 times, and the sliver weight is 13-17g/5m.

The second aspect of the present invention provides a viscose, acrylic fiber, and fine cotton blended yarn prepared by the above method for preparing the viscose, acrylic fiber, and fine cotton blended yarn.

Compared with the prior art, the viscose, acrylic fiber, fine cotton blended yarn and preparation method thereof of the present invention have the following beneficial effects:

The preparation method of the present invention is easy to operate, convenient and fast, and has strong operability, and the prepared viscose, acrylic fiber, and fine cotton blended yarn have high uniformity, and the fabric dyeing uniformity is high; in addition, the prepared viscose, acrylic fiber, and fine cotton blended yarn Yarn fabrics have excellent warmth retention, breathability, moisture absorption, comfort and shape retention, and have broad application prospects in underwear fabrics.

Detailed ways

In the following description, some technical details are provided for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well known methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

The first aspect of the present invention provides a kind of preparation method of viscose glue, acrylic fiber, fine cotton blended yarn, comprising:

Step S1, preparing cotton combed slivers, specifically:

Step S11, the cotton fibers are sequentially mixed and opened, carded and then fed into the drawing frame to obtain pre-drawn cotton fibers, specifically:

Cotton fibers are artificially laid at intervals in the bottom frame of the disc plucking machine, and fed directly into the cotton bin by means of direct fetching. The cotton catching machine used in the embodiment of the present invention is the A002D type disc catching machine, and its parameters are : Grabbing cotton beater speed 700 ~ 800r/min, beater intermittent drop distance 2 ~ 3mm, blade protruding rib interval 4 ~ 6mm.

The cotton fiber caught by the gripper enters the cotton bin of the multi-compartment blending machine and the single-axial flow opener through the suction duct in turn to fully mix and open the cotton. The multi-compartment blender used in the embodiment of the present invention is FA025 multi- The bin cotton blending machine has a beater speed of 200-300r/min; the uniaxial flow opener is a FA102B single-axial flow opener, and its beater speed is 700-800r/min.

The obtained cotton fiber enters the vibrating cotton box of the carding needle opener through the suction duct, and enters the lapping machine after being mixed through the vibrating cotton box to complete the opening and cleaning process to make cotton laps. The comb used in the embodiment of the present invention The needle opener is FA106A comb type cotton opener, the beater speed is 300-400r/min, the distance between the cotton feeding roller and the beater is 4-6mm, and the distance between the stripping knife and the beater is 1-2mm ;The lapping machine is A076F type single hand lapping machine, the speed of the lap roller is 1000~1500r/min, the speed of the lap roller is 10~15r/min, the distance between the dust bar and the dust bar is 6~8mm, the distance between the beater and the balance roller The distance between them is 8-10mm, the distance between the cotton stripping knife and the beater is 1-2mm, and the fixed length is 189m.

The cotton laps are carded into strips by the carding machine, and then fed into the drawing frame to obtain pre-drawing of cotton fibers. In the embodiment of the present invention, the carding machine is a FA203A carding machine, the cylinder speed is 300-350r/min, the licker-in speed is 650-750r/min, the doffer speed is 30-35r/min, the cover plate and tin The five-point spacing between the forests is 7″, 6″, 6″, 6″, and 7″ from the entrance to the exit, and the weight of the raw sliver is 16-20g/5m. The drawing frame is the FA315 drawing frame, which adopts three 7 wires are fed and drawn along the line, the drafting ratio of the first pass is 5-7 times, the drafting ratio of the second and third passes is 4-6 times, the line speed is 350-450r/min, and the pre-drawing weight is 18-22g/5m.

Step S12, pre-drawing the cotton fiber into a sliver package suitable for combing machine processing, feeding the combing machine to obtain a cotton combed sliver; the combing machine in the embodiment of the present invention is a HC500 combing machine, The carding speed is 1000~1200r/min.

The present invention does not limit the types of equipment such as the above-mentioned plucking machine, cotton mixing machine, cotton opener, lapping machine, carding machine, etc., and a suitable model can be selected according to actual needs, but the speed involved in step 1 needs to be strictly followed The rotation speed defined in the embodiment of the present invention, the above-mentioned multiple devices cooperate with each other, and run at the defined speed can reduce the damage of cotton fibers, thereby reducing the proportion of short staples, and improving the blended yarn from the source of cotton fibers. Thread mixing uniformity and dyeing uniformity.

Step S2, preparing viscose and acrylic mixed fiber pre-drawing, specifically including:

Step S21, preparing a packaged mixture of viscose fiber and acrylic fiber, specifically including:

The viscose fiber and the acrylic fiber are loaded into the plucking machine for mixing and then packaged to obtain the packaged mixture of the viscose fiber and the acrylic fiber. The plucking machine used in the embodiment of the present invention is an A002D type disc catching machine, the blades extend out from the ribs at a distance of 4 to 6 mm, the intermittent drop distance of the thugs is 2 to 3 mm, and the speed of the catching thugs is 700 to 800 r/min.

Step S22, unpacking the baled mixture and preparing it into a lap, specifically including:

The baled mixture is artificially layered in the bottom frame of the disc bale machine, and fed directly into the cotton bin by the way of feeding; the viscose and acrylic mixed fibers caught by the gripper enter the multi-bin sequentially through the suction duct The cotton warehouse and cotton opener of the cotton blending machine are fully opened and mixed to obtain the viscose and acrylic fiber mixture; the obtained viscose and acrylic fiber mixture enters the vibrating cotton box of the card opener through the suction duct, and is vibrated After being mixed in the type cotton box, it enters the lapping machine to complete the cotton opening and cleaning process to make cotton laps of viscose and acrylic mixed fibers.

The disc plucking machine used in step S22 is the A002D disc plucking machine; the cotton blending machine is the FA025 multi-compartment cotton blending machine, and its beater speed is 200-300r/min; the cotton opener is the FA102B single-axis flow opening machine. Cotton machine, the beater speed is 700-800r/min; the card opener is FA106A comb-type opener, the beater speed is 300-400r/min, and the distance between the cotton feeding roller and the beater is 4-6mm , the distance between the cotton stripping knife and the beater is 1-2mm; the lapping machine is A076F single-hand lapping machine, the speed of the beater is 1000-1500r/min, the speed of the lap roller is 12-15r/min, the dust bar and dust The distance between the rods is 6-8mm, the distance between the beater and the balance roller is 8-10mm, the distance between the cotton stripping knife and the beater is 1-2mm, and the fixed length is 189m.

Step S23, the lap is carded into strips by a carding machine, and then fed into a drawing frame to obtain a pre-drawing of viscose and acrylic mixed fibers.

The carding machine in step S23 is the FA203A type carding machine, and its cylinder rotating speed is 300～350r/min, the licker-in roller rotating speed is 650～750r/min, the doffer rotating speed is 30～40r/min, the gap between the cover plate and the cylinder The five-point gauges are 7″, 6″, 6″, 6″, and 7″ from the entrance to the exit, and the weight of the raw sliver is 20-25g/5m; the drawing frame is the FA315 type drawing frame, and 6 feeders are used. Along the drafting, the total drafting ratio is 5-8, and the pre-drawing weight is 18-23g/5m.

The embodiments of the present invention can accelerate fiber transfer and reduce fiber damage by reasonably limiting the rotating speed of the cylinder, licker-in roller, and doffer, and adjusting the distance between the cover plate and the cylinder, thereby improving the mixing uniformity and dyeing uniformity of the blended yarn.

The present invention does not limit the types of equipment such as the above-mentioned plucking machine, cotton mixing machine, cotton opener, lapping machine, carding machine, drawing frame, etc., and a suitable model can be selected according to actual needs.

The weight percentage of viscose fiber, acrylic fiber and cotton combed sliver in the embodiment of the present invention is 40-50:25-30:25-35, preferably 40:30:30. Using the viscose fiber, acrylic fiber and cotton combed sliver in the above weight percentage, the three fibers can complement each other and give full play to the excellent properties of various fibers. Not only the fiber structure of the blended yarn is optimized, the spinnability is high, and the The warmth retention, moisture absorption, breathability, comfort and shape retention of the fabric are perfectly unified.

In order to improve the mixing uniformity of the prepared blended yarn, the specification of the viscose fiber in the embodiment of the present invention is preferably 1.33dtex*38mm, the specification of the acrylic fiber is preferably 1.33dtex*38mm, the cotton fiber used in the cotton combed sliver The length is 29-30mm, and the micronaire value is 2.8-3.3. By using long and high-quality cotton fibers, the proportion of short staples can be reduced, and then combined with viscose fibers and acrylic fibers of the same specification, the mixing uniformity and dyeing uniformity of the prepared blended yarns can be greatly improved. improvement.

Step S3, blending viscose, acrylic mixed fiber pre-drawing and cotton combed slivers to obtain mixed fiber drawing, specifically including:

Step S31, mixing M viscose and acrylic mixed fiber pre-drawing and N cotton combed slivers to obtain a mixed drawing; wherein M>2N;

Step S32, mixing the K roots into one drawing and performing the second mixing to obtain the second mixing drawing;

Step S33 , mixing and drawing the Z strands by two and three to obtain mixed fibers and drawing.

In the embodiment of the present invention, the number of M can be 5-9, then N is 2-4, K=M+N, the number of K can be 7-13, Z=M+N-1, and the number of Z can be 6-12.

Exemplarily, 5 viscose, acrylic mixed fiber pre-drawing and 2 cotton combed slivers are mixed together to obtain a mixed drawing;

The 7 mixed ones are mixed and the two are mixed to obtain the mixed two parallels;

The 6 strands are mixed for two and three for drawing to obtain mixed fibers for drawing.

The drawing frame used in step S3 is the FA315 type drawing frame, and the drawing frame process is as follows: adopt three processes of 7/6 feeding and drafting, and the first pass (mixing and combining) adopts 7 feeding, wherein the viscose , 5 pieces of pre-drawing of acrylic mixed fiber, 2 pieces of cotton combed sliver, the total draft ratio is 7-10 times, and the weight of the sliver is 15-20g/5m; Draw frame, the total draft ratio is 5-8 times, and the sliver weight is 14-18g/5m; the third pass (mixed three-way) adopts 6 feeding and mixed-two draw frames, and the total draft ratio is 5-7 times, and the sliver output The dry weight is 13~17g/5m.

In the embodiment of the present invention, three procedures are used to carry out strip mixing, and then combined with the used equal-length viscose fiber and acrylic fiber and cotton fiber with better length and quality, thereby greatly improving the viscose fiber, acrylic fiber and cotton fiber. Mixing uniformity and dyeing uniformity.

In the embodiment of the present invention, the drafting ratio of blending one to blending three can reduce the fracture rate of various fibers in the drafting process, and at the same time achieve the effect of evenly mixing cotton fibers with viscose and acrylic fibers.

In the present invention, the viscose fiber and the acrylic fiber are uniformly cleaned and carded, and the cotton fiber is cleaned and carded separately, and then M pieces of viscose and acrylic fiber mixed fiber pre-drawing and N cotton combed slivers obtained by cleaning are combined according to the ratio of M greater than 2N. The ratio is mixed and combined, and on the basis of mixed one and combined, mixed two and mixed are carried out, so as to obtain evenly mixed mixed fibers. Because of the adoption of the above scheme, the prepared viscose, acrylic fiber and fine cotton blended yarns have high uniformity and high fabric dyeing uniformity, and the preparation method of the present invention has strong operability and high preparation efficiency.

Further, since the present invention uses M viscose, acrylic mixed fiber pre-drawing and N cotton combed slivers to mix according to the ratio of M greater than 2N, therefore, the three fibers in the resulting blended yarn are prepared separately The properties of the blended yarns can complement each other and give full play to the excellent properties of various fibers. Not only the fiber structure of the blended yarn is optimized, the spinnability is high, but also the warmth retention, moisture absorption, air permeability, comfort and shape retention of the fabric are improved. The perfect unification has been realized, and it has broad application prospects in the development of underwear fabrics.

Step S4, performing the coarse sanding process, the spinning process and the winding process in sequence on the drawing of the mixed fibers to obtain viscose, acrylic fiber, and fine cotton blended yarn, specifically including:

Step S41 , drawing the mixed fibers through a roving frame to obtain a blended roving sliver.

The roving frame used in this step is the HY492C type roving frame, the draft ratio of the blended roving of the viscose, acrylic fiber, and fine cotton blended yarn is 6 to 8 times, the weight of the roving is 3 to 5g/10m, and the twist of the roving is 4 to 6 twists/10cm , The roving twist coefficient is 110-120.

Step S42, thinning the blended roving sliver into bobbins through a spinning frame.

The spinning frame in this step is a DTM507B spinning frame, and the blended roving strips of viscose, acrylic fiber, and fine cotton blended yarn are fed into the rear roller through the bell mouth. The twist is 90-100 twists/10cm, and the yarn twist coefficient is 350-380.

Step S43, according to the yarn process parameters, the bobbin yarn is wound into yarn by a winder to obtain viscose, acrylic fiber, and fine cotton blended yarn.

The winder in this step is an ISPERO automatic winder with a vehicle speed of 1000-1300m/min, and the short thick joint S is 280%/0.4cm, 250%/0.5cm, 120%/2cm, 80%/4cm, 60% /8cm, long thick place L is 40%/20cm, 25%/64cm, long detail T is -45%/6cm, -25%/25cm, -15%/100cm.

The embodiments of the present invention improve the strength of the blended yarn by controlling the spinning parameters, and at the same time improve the viscose with low wet modulus, high shrinkage rate, easy deformation, poor wear resistance, and acrylic fibers that are prone to static electricity and cotton fibers. The problem of poor shape retention, the prepared viscose, acrylic fiber, and fine cotton blended yarn fabric has excellent warmth retention, air permeability, moisture absorption, comfort and shape retention, and has a wide application prospect in underwear fabrics.

The second aspect of the present invention provides a viscose, acrylic fiber, and fine cotton blended yarn prepared by the above method for preparing the viscose, acrylic fiber, and fine cotton blended yarn.

The invention discloses a method for preparing a blended yarn with good hygroscopicity of viscose, fluffy acrylic fiber structure and high spinnability of cotton, so that the formed fabric has good hygroscopicity, warmth retention, air permeability, comfort and heat preservation. shape and other characteristics.

The invention solves the problems that viscose, acrylic and cotton fibers are directly subjected to the cleaning and carding process at the same time, resulting in poor mixing uniformity, complicated processing technology and difficulty in uniform dyeing; the properties of viscose, acrylic and cotton fibers are Integrate, complement each other, give full play to the excellent properties of various fibers, not only optimize the fiber structure of the blended yarn, high spinnability, but also realize the warmth retention, moisture absorption, air permeability, comfort and shape retention of the fabric perfect unity.

The present invention will be described in detail below with more specific examples.

Example 1:

1. Raw material selection and ratio

The viscose fiber is produced by Fujian Sately Fiber Co., Ltd., the specification is: 1.33dtex*38mm, and the weight percentage is 40%;

Acrylic fiber is produced by Hebei Aikerui Fiber Co., Ltd., the specification is: 1.33dtex*38mm, and the weight percentage is 25%;

The cotton fiber is Xinjiang cotton, the length is 29-30 mm, the micronaire value range is 2.8-3.3, and the weight percentage is 35%.

2. Cotton combed slivers

Lay cotton fibers at artificial intervals in the bottom frame of the disc catching machine, adopt the A002D disc catching machine, the speed of the cotton catching beater is 700r/min, the intermittent drop distance of the beater is 2mm, and the distance between the blade and the rib is 4mm; FA025 type The beater speed of the multi-compartment blending machine is 200r/min; the beater speed of the FA102B single-axis flow opener is 700r/min; the beater speed of the FA106A comb type opener is 300r/min, and the distance between the cotton feeding roller and the beater is 4mm , the distance between the cotton stripping knife and the beater is 1mm; the speed of the beater of the A076F single hand lapping machine is 1000r/min, the speed of the lap roller is 10r/min, the distance between the dust bar and the dust bar is 6mm, the beater and the balance roller The distance between them is 8mm, the distance between the cotton stripping knife and the beater is 1mm, and the fixed length is 189m.

Feed the obtained lap into the FA203A carding machine, the cylinder speed is 300r/min, the take-in roller speed is 650r/min, the doffer speed is 30r/min, the five-point distance between the cover plate and the cylinder is from the inlet to the The outlets are 7″, 6″, 6″, and 6″ respectively, and the raw sliver weight is 16g/5m; then pre-drawing is carried out on the FA315 draw frame, and the three-way 7-piece feed is used for drafting, and the first-pass drafting multiple 5 times, the second and third drafting times are 4 times, the line speed is 350r/min, the pre-drawing weight is 18g/5m; the carding speed of HC500 combing is 1000r/min.

3. Pre-drawing of viscose and acrylic mixed fibers

Put the viscose fiber and acrylic fiber into the cotton box of the A002D disc catching machine according to the dry weight blending ratio and mix them. After the discs are boxed and mixed, they are packaged to obtain a packaged mixture of viscose fiber and acrylic fiber; the packaged mixture is artificially laid at intervals in the bottom frame of the A002D disc catching machine, and the viscose/acrylic fiber mixed fibers caught by the gripper enter in turn. The cotton bin of the FA025 multi-compartment blending machine and the FA102B single-axis flow cotton opener are fully opened and mixed to obtain a viscose/acrylic fiber mixture. Among them, the beater speed of the multi-compartment cotton blending machine is 200r/min, and the beater speed of the single-axial flow opener is 700r/min; After being mixed by the vibrating cotton box, it enters the A076F type single lapping machine to complete the opening and cleaning process to make cotton laps of viscose and acrylic mixed fibers. Among them, the beater speed of the comb-type cotton opener is 300r/min, the distance between the cotton feeding roller and the beater is 4mm, and the distance between the stripping knife and the beater is 1mm; Roller speed is 12r/min, the distance between dust bar and dust bar is 6mm, the distance between beater and balance roller is 8mm, the distance between stripping knife and beater is 1mm, and the fixed length is 189m.

The viscose and acrylic mixed fibers obtained in rolls are carded into strips by the FA203A carding machine, and then fed into the FA315 drawing frame to obtain the viscose/acrylic mixed fiber pre-drawing. Among them, the rotation speed of the cylinder of the carding machine is 300r/min, the rotation speed of the licker-in roller is 650r/min, the rotation speed of the doffer is 30r/min, and the five-point distance between the cover plate and the cylinder is 7″ and 6″ from the inlet to the outlet respectively. , 6″, 6″, raw sliver weight 20g/5m; 6 wires are fed and drawn along the draw frame, the total draft multiple is 5, and the pre-drawing weight is 18g/5m.

4. Drawing mixed yarn

The cotton combed slivers obtained respectively and the pre-drawing of viscose and acrylic fiber mixed fibers are carried out on the FA315 type drawing frame according to a certain dry weight blending ratio. and) obtaining mixed fiber drawing frames of viscose, acrylic fibers, and fine cotton blended yarns. Among them, 7 feeds are used in the first pass (mixing and merging), including 5 viscose and acrylic mixed fiber pre-drawings, 2 cotton combed slivers, the total draft ratio is 7 times, and the sliver weight is 15g/5m; The second pass (mixed two parallels) adopts 7 feeding and mixing one drawing frames, the total draft ratio is 5 times, and the sliver dry weight is 14g/5m; the third pass (mixing three parallels) adopts 6 feeding mixed two drawing frames, the total The drafting ratio is 5 times, and the weight of the sliver is 13g/5m.

Five, roving process

The mixed fibers of the obtained strips of viscose, acrylic fiber, and fine cotton blended yarn are paralleled through a HY492C type roving frame to obtain a blended roving sliver of viscose, acrylic fiber, and fine cotton blended yarn. Among them, the drafting ratio of the roving is 6 times, the weight of the roving is 3g/10m, the twist of the roving is 4 twists/10cm, and the twist coefficient of the roving is 110.

6. Thinning into yarn

The blended roving sliver of viscose, acrylic fiber and fine cotton blended yarn is further thinned into cylindrical yarn by DTM507B spinning frame. Among them, the spinning parameters are 60 times the drafting ratio of spinning machinery, 90 twists/10cm of yarn forming twist, and 350 yarn twist coefficients.

Seven, winding finished product

The bobbin is wound into yarn by ISPERO automatic winding machine according to the yarn process parameters, and the finished viscose, acrylic and fine cotton blended yarn is obtained. Among them, the vehicle speed is 1000m/min.

The prepared yarn count is 40, and the single yarn breaking strength is 192.5CN.

Example 2:

1. Selection and ratio of raw materials

The viscose fiber is produced by Fujian Sately Fiber Co., Ltd., the specification is: 1.33dtex*38mm, and the weight percentage is 40%;

Acrylic fiber is produced by Hebei Aikerui Fiber Co., Ltd., the specification is: 1.33dtex*38mm, and the weight percentage is 30%;

The cotton fiber is Xinjiang cotton, the length is 29-30 mm, the micronaire value range is 2.8-3.3, and the weight percentage is 30%.

2. Cotton combed slivers

Lay cotton fibers at artificial intervals in the bottom frame of the disc catching machine, adopt the A002D disc catching machine, the speed of the catching hand is 750r/min, the intermittent drop distance of the hand is 3mm, and the distance between the blade and the rib is 5mm; FA025 type The beater speed of the multi-compartment blending machine is 250r/min; the beater speed of the FA102B single-axis flow opener is 750r/min; the beater speed of the FA106A comb type opener is 350r/min, and the distance between the cotton feeding roller and the beater is 5mm , the distance between the cotton stripping knife and the beater is 2mm; the speed of the beater of the A076F single hand roll machine is 1300r/min, the speed of the lap roller is 13r/min, the distance between the dust bar and the dust bar is 7mm, the beater and the balance roller The distance between them is 9mm, the distance between the cotton stripping knife and the beater is 2mm, and the fixed length is 189m.

Feed the obtained lap into the FA203A carding machine, the cylinder speed is 330r/min, the take-in roller speed is 700r/min, the doffer speed is 33r/min, the five-point distance between the cover plate and the cylinder is from the inlet to the The outlets are 7″, 6″, 6″, 6″, and 7″ respectively, and the raw sliver weight is 18.5g/5m; then pre-drawing is carried out on the FA315 drawing frame, and three lines of 7 feeding and drafting are adopted. The drafting ratio of the second and third passages is 6 times, the drafting ratio of the second and third passages is 5 times, the line speed is 400r/min, the pre-drawing weight is 20.5g/5m; the carding speed of the HC500 comber is 1100r/min.

3. Pre-drawing of viscose and acrylic mixed fibers

Put the viscose fiber and acrylic fiber into the cotton box of the A002D disc plucking machine according to the dry weight blending ratio, and mix them. After the trays are packed and mixed, they are packaged to obtain a packaged mixture of viscose fiber and acrylic fiber; the packaged mixture is artificially laid at intervals in the bottom frame of the A002D disc cotton machine, and it is fed into the cotton warehouse by direct picking. The captured viscose/acrylic mixed fiber enters the cotton bin of the FA025 multi-compartment blending machine and the FA102B single-axial flow opener through the suction duct for full opening and mixing to obtain the viscose and acrylic fiber mixture. Among them, the beater speed of the multi-compartment cotton blending machine is 250r/min, and the beater speed of the single-axial flow opener is 750r/min; After being mixed by the vibrating cotton box, it enters the A076F type single lapping machine to complete the opening and cleaning process to make cotton laps of viscose and acrylic mixed fibers. Among them, the beater speed of the comb-type cotton opener is 350r/min, the distance between the cotton feeding roller and the beater is 5mm, and the distance between the stripping knife and the beater is 2mm; Roller speed is 14r/min, the distance between dust bar and dust bar is 7mm, the distance between beater and balance roller is 9mm, the distance between stripping knife and beater is 2mm, and the fixed length is 189m.

The viscose and acrylic mixed fibers obtained in rolls are carded into strips by the FA203A carding machine, and then fed into the FA315 drawing frame to obtain the viscose and acrylic mixed fibers pre-drawn. Among them, the rotation speed of the cylinder of the carding machine is 330r/min, the rotation speed of the licker-in roller is 700r/min, the rotation speed of the doffer is 35r/min, and the five-point distance between the cover plate and the cylinder is 7″ and 6″ from the inlet to the outlet respectively. , 6″, 6″, 7″, raw sliver basis weight 23g/5m; on the draw frame, 6 wires are fed and drawn along, the total draft multiple is 6, and the pre-drawing frame quantity is 21g/5m.

4. Drawing mixed yarn

Respectively the cotton combed sliver obtained and the viscose glue, acrylic fiber mixed fiber pre-drawing are carried out on the FA315 type drawing frame according to certain dry weight blending ratio, through three procedures (mixing one, mixing two and mixing three) and) obtaining mixed fiber drawing frames of viscose, acrylic fibers, and fine cotton blended yarns. Among them, 7 slivers are used for feeding in the first pass (mixing and merging), including 5 slivers of viscose and acrylic mixed fiber pre-drawing, 2 cotton combed slivers, the total drafting ratio is 8 times, and the sliver weight is 18g/5m; The second pass (mixed two parallels) adopts 7 feeding and mixing one drawing frames, the total draft ratio is 7 times, and the sliver dry weight is 17.5g/5m; the third pass (mixing three paralleling) adopts 6 feeding mixed two drawing frames, The total draft ratio is 6 times, and the sliver weight is 16.5g/5m.

Five, roving process

The mixed fibers of the obtained strips of viscose, acrylic fiber, and fine cotton blended yarn are paralleled through a HY492C type roving frame to obtain a blended roving sliver of viscose, acrylic fiber, and fine cotton blended yarn. Among them, the drafting ratio of the roving is 7 times, the basis weight of the roving is 4.4g/10m, the twist of the roving is 5.3 twists/10cm, and the twist coefficient of the roving is 116.

6. Thinning into yarn

The blended roving sliver of viscose, acrylic fiber and fine cotton blended yarn is further thinned into cylindrical yarn by DTM507B spinning frame. Among them, the spinning parameters are 62 times the draft ratio of the spinning machine, the yarn twist is 96.5 twists/10cm, and the yarn twist coefficient is 370.

Seven, winding finished product

The bobbin is wound into yarn by ISPERO automatic winding machine according to the yarn process parameters, and the finished viscose, acrylic and fine cotton blended yarn is obtained. Among them, the vehicle speed is 1100m/min.

The prepared yarn count is 40, and the single yarn breaking strength is 196.4CN.

Example 3:

1. Selection and ratio of raw materials

The viscose fiber is produced by Fujian Sately Fiber Co., Ltd., the specification is: 1.33dtex*38mm, and the weight percentage is 50%;

Acrylic fiber is produced by Hebei Aikerui Fiber Co., Ltd., the specification is: 1.33dtex*38mm, and the weight percentage is 25%;

The cotton fiber is Xinjiang cotton, the length is 29-30mm, the micronaire value range is 2.8-3.3, and the weight percentage is 25%.

2. Cotton combed slivers

Lay the cotton fibers at intervals manually in the bottom frame of the disc catching machine, adopt the A002D disc catching machine, the speed of the catching hand is 800r/min, the intermittent drop distance of the hand is 3mm, and the distance between the blade and the rib is 6mm; FA025 type The beater speed of the multi-compartment blending machine is 300r/min; the beater speed of the FA102B single-axis flow opener is 800r/min; the beater speed of the FA106A comb type opener is 400r/min, and the distance between the cotton feeding roller and the beater is 6mm , the distance between the cotton stripping knife and the beater is 2mm; the speed of the beater of the A076F single hand roll machine is 1500r/min, the speed of the lap roller is 15r/min, the distance between the dust bar and the dust bar is 8mm, the beater and the balance roller The distance between them is 10mm, the distance between the cotton stripping knife and the beater is 2mm, and the fixed length is 189m.

Feed the obtained cotton laps into the FA203A carding machine, the cylinder speed is 350r/min, the take-in roller speed is 750r/min, the doffer speed is 35r/min, and the five-point distance between the cover plate and the cylinder is from the inlet to the The outlets are 7″, 6″, 6″, 6″, 7″ respectively, and the weight of raw sliver is 20g/5m; then pre-drawing is carried out on the FA315 drawing frame, and three feeding and 7 wires are used to feed and draw, and the head The drafting multiple is 7 times, the second and third drafting multiples are 6 times, the line speed is 450r/min, the pre-drawing weight is 22g/5m; the carding speed of HC500 comber is 1200r/min.

3. Pre-drawing of viscose and acrylic mixed fibers

Put the viscose fiber and acrylic fiber into the cotton box of the A002D disc catching machine according to the dry weight blending ratio and mix them. After the disks are packed and mixed, they are packaged to obtain a packaged mixture of viscose fiber and acrylic fiber; the packaged mixture is artificially laid at intervals in the bottom frame of the A002D disc catching machine, and the viscose and acrylic fiber mixed fibers caught by the gripper are collected by suction. The air duct enters the cotton warehouse of the FA025 multi-compartment cotton blender and the FA102B single-axial flow cotton opener in turn to fully open and mix the cotton to obtain a viscose and acrylic fiber mixture. Among them, the beater speed of the multi-compartment cotton blending machine is 300r/min, and the beater speed of the single-axial flow opener is 800r/min; After being mixed by the vibrating cotton box, it enters the A076F type single lapping machine to complete the opening and cleaning process to make cotton laps of viscose and acrylic mixed fibers. Among them, the beater speed of the comb-type cotton opener is 400r/min, the distance between the cotton feeding roller and the beater is 6mm, and the distance between the stripping knife and the beater is 2mm; Roller speed is 15r/min, the distance between dust bar and dust bar is 8mm, the distance between beater and balance roller is 10mm, the distance between stripping knife and beater is 2mm, and the fixed length is 189m.

The viscose and acrylic mixed fibers obtained in rolls are carded into strips by the FA203A carding machine, and then fed into the FA315 drawing frame to obtain the viscose and acrylic mixed fibers pre-drawn. Among them, the rotation speed of the cylinder of the carding machine is 350r/min, the rotation speed of the licker-in roller is 750r/min, the rotation speed of the doffer is 40r/min, and the five-point distance between the cover plate and the cylinder is 7″ and 6″ from the inlet to the outlet respectively. , 6″, 6″, 7″, raw sliver weight 25g/5m; on the draw frame, 6 wires are fed and drawn along, the total draft multiple is 8, and the pre-drawing weight is 23g/5m.

4. Drawing mixed yarn

Respectively the cotton combed sliver obtained and the viscose glue, acrylic fiber mixed fiber pre-drawing are carried out on the FA315 type drawing frame according to certain dry weight blending ratio, through three procedures (mixing one, mixing two and mixing three) and) obtaining mixed fiber drawing frames of viscose, acrylic fibers, and fine cotton blended yarns. Among them, 7 feeds are used for the first pass (mixing and merging), including 5 viscose and acrylic mixed fiber pre-drawings, 2 cotton combed slivers, the total draft ratio is 10 times, and the sliver weight is 20g/5m; The second pass (mixed two parallels) adopts 7 feeding and mixed drawing frames, the total draft ratio is 8 times, and the sliver dry weight is 18g/5m; the third pass (mixed three parallels) adopts 6 feeding mixed two drawing frames, the total The drafting ratio is 7 times, and the sliver weight is 17g/5m.

Five, roving process

The mixed fibers of the obtained strips of viscose, acrylic fiber, and fine cotton blended yarn are paralleled through a HY492C type roving frame to obtain a blended roving sliver of viscose, acrylic fiber, and fine cotton blended yarn. Among them, the drafting ratio of the roving is 8 times, the weight of the roving is 5g/10m, the twist of the roving is 6 twists/10cm, and the twist coefficient of the roving is 120.

6. Thinning into yarn

The blended roving sliver of viscose, acrylic fiber and fine cotton blended yarn is further thinned into cylindrical yarn by DTM507B spinning frame. Among them, the spinning parameters are 65 times the draft ratio of the spinning machine, 100 twists/10cm of yarn forming twist, and 380 yarn twist coefficients.

Seven, winding finished product

The bobbin is wound into yarn by ISPERO automatic winding machine according to the yarn process parameters, and the finished viscose, acrylic and fine cotton blended yarn is obtained. Among them, the vehicle speed is 1300m/min.

The prepared yarn count is 40, and the single yarn breaking strength is 190.5CN.

The technical performance indicators of the spun viscose and acrylic fiber/worsted cotton blended yarns are shown in Table 1.

The quality parameter of table 1 example 1-3 viscose glue, acrylic fiber, fine cotton blended yarn

Through the comparison of Example 1, Example 2 and Example 3, it can be seen that the yarn quality can be significantly increased by using the composition ratio and process parameters in the viscose, acrylic fiber, and fine cotton blended yarn of the present invention.

The above are only a few embodiments of the application, and do not limit the application in any form. Although the application is disclosed as above with preferred embodiments, it is not intended to limit the application. Any skilled person familiar with this field, Without departing from the scope of the technical solution of the present application, any changes or modifications made using the technical content disclosed above are equivalent to equivalent implementation cases, and all belong to the scope of the technical solution.

Claims (9)

1. a preparation method of viscose, acrylic fiber, fine cotton blended yarn, is characterized in that, comprises: Step S1, preparing cotton combed slivers; Step S2, preparing viscose and acrylic mixed fiber pre-drawing; Step S3, sliver-blending the viscose and acrylic mixed fiber pre-drawing and cotton combed slivers to obtain the mixed fiber drawing; Step S4, performing a coarse sanding process, a spinning process and a winding process on the drawing of the mixed fibers in sequence to obtain viscose, acrylic and fine cotton blended yarns. 2. the preparation method of viscose glue according to claim 1, acrylic fiber, fine cotton blended yarn is characterized in that, described step S2 specifically comprises: Prepare a baled mixture of viscose and acrylic fibers; opening the baled mixture and preparing laps; The laps are carded into strips by a carding machine and then fed into a drawing frame to obtain a pre-drawing of viscose and acrylic mixed fibers. 3. the preparation method of viscose glue according to claim 2, acrylic fiber, worsted cotton blended yarn, is characterized in that, the weight percent of described viscose fiber, acrylic fiber and described cotton combed sliver is 40～50: 25～30:25～35; The cotton fibers used in the combed cotton slivers have a length of 29-30 mm and a micronaire value of 2.8-3.3. 4. the preparation method of viscose glue according to claim 1, acrylic fiber, fine cotton blended yarn is characterized in that, described step S1 specifically comprises: Cotton fibers are sequentially mixed and opened, carded and then fed to the drawing frame to obtain pre-drawn cotton fibers; The cotton fiber is pre-drawn and fed into a combing machine to obtain a cotton combed sliver; The mixing and opening specifically includes: feeding the cotton fibers into a blender, a single-axial flow opener and a card opener in sequence for mixing and opening. 5. the preparation method of viscose glue, acrylic fiber, worsted cotton blended yarn according to claim 4, is characterized in that, the beater rotating speed of described cotton blending machine is 200～300r/min; The beater speed of the uniaxial flow opener is 700-800r/min; The beating speed of the card opener is 300-400r/min. 6. the preparation method of viscose glue according to claim 4, acrylic fiber, worsted cotton blended yarn, it is characterized in that, the cylinder speed of the carding machine that described carding uses is 300～350r/min, the licker-in speed 650~750r/min, doffer speed 30~35r/min; The linear speed of the drawing frame is 350～450r/min; The carding speed of the comber is 1000-1200r/min. 7. the preparation method of viscose glue according to claim 1, acrylic fiber, fine cotton blended yarn is characterized in that, described step S3 specifically comprises: Mixing M viscose, acrylic mixed fiber pre-drawing and N cotton combed slivers to obtain a mixed drawing; wherein M>2N; Mixing the multiple parallel draws to obtain the mixed two draws; A plurality of said mixed fibers are drawn for three times to obtain said mixed fibers. 8. the preparation method of viscose glue according to claim 7, acrylic fiber, fine cotton blended yarn, it is characterized in that, the total draw ratio of described mixing together is 7～10 times, and the sliver quantitatively is 15～10 times. 20g/5m; The total draft ratio of the mixed two is 5 to 8 times, and the sliver weight is 14 to 18g/5m; The total drafting ratio of the blend is 5-7 times, and the sliver weight is 13-17g/5m. 9. A viscose, acrylic fiber, and fine cotton blended yarn prepared by the method for preparing the viscose, acrylic fiber, and fine cotton blended yarn according to any one of claims 1-8.