Warm-keeping anti-pilling fiber blended knitted skirt and preparation method thereof

Abstract

The invention provides a warm-keeping anti-pilling fiber blended knitted skirt and a preparation method thereof. The preparation method comprises the following steps: (1) uniformly mixing polyester chips, a modifying agent, an antioxidant and a dispersing agent, carrying out melt granulation through a twin-screw extruder, uniformly stirring modified master batches and the polyester chips, carrying out melt spinning, cooling, bundling, oiling, drafting, sizing and winding to obtain modified polyester fibers; (2) placing the modified polyester fiber in an aqueous solution containing a cationic dye and an auxiliary agent, heating for dyeing, and washing; (3) carrying out dyed yarn forming, wool mixing, cotton carding, drawing, roving, spinning, doubling and two-for-one twisting on the dyed modified polyester fibers and at least one of cashmere, wool, mulberry silk or modal fibers to obtain dyed yarns; and (4) knitting, looping, washing and ironing the dyed yarns to obtain the warm-keeping anti-pilling fiber blended knitted skirt. The prepared knitted skirt is soft in hand feeling and comfortable to wear, and has the functions of keeping warm and resisting pilling and static electricity.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, in particular to a warm-keeping anti-pilling fiber blended knitted skirt and a preparation method thereof. Background Art

[0002] Polyester fiber, also known as polyester, is the most commonly used synthetic fiber. It has excellent wrinkle resistance and shape retention, as well as high strength and elastic recovery. Fabrics made from it are strong and durable. However, polyester has poor moisture absorption and pilling resistance. Therefore, the fabrics made from it have poor breathability when worn, average warmth retention, serious static electricity and are prone to pilling.

[0003] With the continuous development of the clothing industry and the continuous change of consumption concepts, people's requirements for clothing are getting higher and higher. They not only pursue fashion and comfort, but also functionality. The proportion of knitted clothing in the total clothing volume continues to increase, and products with consistent prices and good quality are more competitive in the market. Wool, cashmere and mulberry silk are high-end natural protein fibers, and modal is a soft and comfortable regenerated cellulose fiber. In order to reduce costs while meeting people's functional requirements for clothing, it still needs to be developed. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a warm and anti-pilling fiber blended knitted skirt and a preparation method thereof. The self-developed functional modified polyester fiber is used as the main body and is blended with one or more of cashmere, wool, mulberry silk, and modal to prepare a knitted skirt with warm, anti-pilling and anti-static effects, thereby solving the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] According to a first aspect of the present invention, there is provided a method for preparing a warm and anti-pilling fiber blended knitted skirt, comprising the following steps:

[0009] (1) mixing the dried polyester chips, the modifier, the antioxidant and the dispersant uniformly, and melt-granulating the mixture through a twin-screw extruder to obtain a modified masterbatch, and then uniformly mixing the modified masterbatch with the polyester chips, melt-spinning the mixture, and cooling, bundling, oiling, drawing, shaping and winding the mixture to obtain a modified polyester fiber;

[0010] (2) placing the modified polyester fiber in an aqueous solution containing a cationic dye and an auxiliary agent, heating the solution for dyeing, and washing the solution;

[0011] (3) using the dyed modified polyester fiber as the main raw material, adding at least one of cashmere, wool, mulberry silk or modal fiber, and performing colored yarn forming, wool and wool, carding, drawing, roving, spun yarn, doubling and twisting to obtain colored yarn;

[0012] (4) knitting the colored yarn, knitting the yarn, washing and ironing the yarn to obtain the warm and anti-pilling fiber blended knitted skirt.

[0013] Preferably, in step (1), the viscosity of the polyester chips is 0.58 to 0.66 dL / g.

[0014] Preferably, in step (1), the modifier is selected from at least one of nano titanium dioxide, nano silicon dioxide or polyether ester;

[0015] The antioxidant is selected from at least one of phosphite compounds, hindered phenol compounds, and thioester compounds;

[0016] The dispersant is selected from at least one of fatty acid ester compounds, stearate compounds, stearamide compounds, and polyethylene wax.

[0017] Preferably, in step (1), the mass ratio of polyester chips, modifier, antioxidant and dispersant in the modified masterbatch is 95:1-3:1-2:1-2;

[0018] The mass ratio of the modified masterbatch to the polyester chips is 3-8:92-97.

[0019] Preferably, in step (1), the melt spinning parameters are: temperature 280-285° C., spinning speed 3500-4000 m / min, number of spinneret holes 24-72, and drafting multiple 1.5-3.5 times.

[0020] Preferably, in step (2), the cationic dye is selected from at least one of E-type migrating cationic dyes, cationic dyes for modified synthetic fibers, and SD-type disperse cationic dyes;

[0021] The auxiliary agent is selected from at least one of 1227 surfactant, 1631 surfactant, and retarder A;

[0022] In the aqueous solution containing the cationic dye and the auxiliary agent, the concentration of the cationic dye is 0.05-3% (owf), and the concentration of the auxiliary agent is 0-2% (owf).

[0023] Preferably, in step (2), the specific steps of the temperature-raising dyeing are: firstly raising the temperature to 75°C, then raising the temperature to 100°C at a heating rate of 1°C / min, keeping the temperature and washing out of the tank.

[0024] Preferably, in step (3), the colored yarn comprises 35-50% of dyed modified polyester fiber, 0-10% of cashmere, 0-10% of wool, 0-10% of mulberry silk, and 0-50% of modal fiber.

[0025] Preferably, in step (3), the colored yarn is formed by semi-worsted siro spinning with a humidity of 65-75%;

[0026] In step (4), the knitting parameters are: using a plain needle or rib structure, 72 / 3Nm~85 / 3Nm, 14~16 needles, and making a woven piece on a flat knitting machine.

[0027] According to a second aspect of the present invention, there is provided a warm and anti-pilling fiber blended knitted skirt obtained according to the above-mentioned preparation method.

[0028] (III) Beneficial effects

[0029] The present invention provides a warm and anti-pilling fiber blended knitted skirt and a preparation method thereof.

[0030] Beneficial effects:

[0031] The present invention provides a method for preparing a warm and anti-pilling fiber blended knitted skirt, in which functional modified polyester fibers are prepared by modified granulation and melt spinning to improve hygroscopicity and have a far-infrared warming function, and the fibers are blended with at least one of cashmere, wool, mulberry silk and modal in proportion for spinning and weaving to obtain a knitted skirt which is soft to the touch, comfortable to wear and has warm, anti-pilling and anti-static functions. DETAILED DESCRIPTION

[0032] In order to better illustrate the content of the present invention, a detailed description is given below in conjunction with specific embodiments.

[0033] A method for preparing a warm and anti-pilling fiber blended knitted skirt comprises the following steps:

[0034] Step 1, after high-speed mixing and vacuum drying of polyester chips, modifiers, antioxidants and dispersants, the mixture is put into a twin-screw extruder for melt granulation, and the modified masterbatch and polyester chips are placed in a stirrer for medium mixing, vacuum drying and melt spinning are performed, and the filament bundle is then cooled, bundled, oiled, drawn, shaped and wound to obtain modified polyester fibers;

[0035] Step 2, placing the modified polyester fiber in an aqueous solution containing a cationic dye and an auxiliary agent, heating the solution for dyeing, and washing the solution;

[0036] Step 3, using the dyed modified polyester fiber as the main raw material, adding at least one of cashmere, wool, mulberry silk or modal fiber, performing colored yarn forming, wool and wool, carding, drawing, roving, spun yarn, doubling and twisting to obtain colored yarn;

[0037] Step 4, knitting the colored yarn, sleeve-knitting, washing and ironing to obtain a warm and anti-pilling fiber blended knitted skirt.

[0038] In step 1 of the present invention, the polyester chips are modified to improve the problems of severe static electricity, general warmth retention and easy pilling of polyester fabrics when worn. The prepared modified polyester fiber has far infrared function, a moisture regain greater than 1%, and anti-pilling properties. The modified polyester fiber is used as the main body and is blended with at least one fiber of cashmere, wool, mulberry silk and modal in proportion for spinning, and has excellent hygroscopicity, warmth retention, antistatic and anti-pilling properties.

[0039] In step 2, the modified polyester fiber is dyed by heating with an aqueous solution containing cationic dyes and auxiliaries. Specifically, the aqueous solution containing cationic dyes and auxiliaries is first heated to 75°C, then heated to 100°C at a heating rate of 1°C / min, and then washed and taken out of the tank while keeping warm.

[0040] Correspondingly, cashmere, wool, mulberry silk and modal fibers also need to be dyed before use. The specific dyeing process is as follows:

[0041] Cashmere and wool use wool reactive dyes. First, the aqueous solution containing wool reactive dyes and auxiliaries is heated to 60°C, then heated to 90°C at a rate of 1°C / 1.5min, and then washed with alkali at a temperature of 1°C / 1.5min before being washed out of the tank.

[0042] Mulberry silk uses reactive dyes. First, the silk is pre-treated in water heated to 100°C for 60 minutes and then washed. Then, auxiliaries and reactive dyes are added to the water, and the temperature is raised to 60°C at a rate of 1°C / min. The water is then washed with alkali to fix the color and washed out of the tank.

[0043] Modal fiber uses reactive dyes. The aqueous solution containing reactive dyes and auxiliaries is heated to 60°C at a rate of 1°C / min, kept warm, fixed in color, and washed out of the tank.

[0044] In the present invention, various fibers are all dyed by loose fiber dyeing, and fibers of different materials are dyed separately, and the corresponding dyes, auxiliaries and temperatures are used, so that the color fastness of various fibers can be improved.

[0045] In a specific embodiment, the colored yarn forming process of the present invention adopts semi-worsted siro spinning, so that the fibers are arranged closely, the amount of hairiness is small, and the wear resistance and pilling resistance are improved.

[0046] The technical solution provided by the present invention is further described below in conjunction with specific embodiments.

[0047] Example 1

[0048] Preparation of modified polyester fiber: polyester chips with a viscosity of 0.62-0.64 dL / g and modifiers, antioxidants and dispersants are mixed in a ratio of 95:3:1:1, vacuum dried and mixed, and then melt granulated by a twin-screw extruder, wherein the modifier is a mixture of nano-silicon dioxide, polyethylene glycol and polyethylene oxide with a particle size of 40-60 nm, the antioxidant is phosphite, and the dispersant is glyceryl stearate, to obtain a modified masterbatch, and then the modified masterbatch is mixed with polyester chips with a viscosity of 0.62-0.64 dL / g in a ratio of 5:95, and then melt-spun after vacuum drying at 120° C. for 12 hours, with a spinning temperature of 280° C., a spinning speed of 3600 m / min, and a draft ratio of 2.2 times to prepare the modified polyester fiber;

[0049] Loose fiber dyeing: Place the modified polyester fiber in an aqueous solution containing E-type migratory cationic dyes and 1227 surfactants, heat it to 75°C, then heat it to 100°C at a rate of 1°C / min, wash it in a warm state and then take it out of the vat; Place the modal fiber in an aqueous solution containing reactive dyes and auxiliaries, heat it to 60°C at a rate of 1°C / min, wash it in a warm state and then take it out of the vat; Place the wool in an aqueous solution containing reactive dyes and auxiliaries for wool, heat it to 60°C at a rate of 1°C / min, then heat it to 90°C at a rate of 1°C / 1.5min, wash it in a warm state and then take it out of the vat; First, place the mulberry silk in water and heat it to 100°C to pre-treat the mulberry silk for 60 minutes and then wash it, then add auxiliaries and reactive dyes to the water, heat it to 60°C at a rate of 1°C / min, wash it in a warm state and then take it out of the vat;

[0050] Colored yarn forming: 35% modified polyester fiber, 50% modal fiber, 8% wool and 7% mulberry silk are obtained through the processes of wool and wool, carding, drawing, roving, spinning, doubling and twisting. The specific parameters are: carding feeding length is 38mm, licker-in speed is 560r / min, cylinder speed is 245r / min, number of drawing roots is 6-8, drawing draft is 8-11 times, three times in total, quantitative 10g / 3m; roving draft is 7.4 times, roving viscosity is 40T / M, roving quantitative 4g / 10m; spinning front roller speed is 15m / min, spinning draft is 1.167 times × 49.3 times, spinning spindle speed is 15000r / min, doubling speed is 1000m / min; two-for-one twisting spindle speed is 9000r / min;

[0051] Fabric forming: The obtained colored yarn finished product is set to 72 / 3Nm, 14 needles, 1+1 rib structure, and knitted into a fabric using a flat knitting machine;

[0052] Washing and ironing: each fabric piece is put into the seam machine for the seam, and after washing and ironing, a warm and anti-pilling fiber blended knitted skirt is obtained.

[0053] Example 2

[0054] Preparation of modified polyester fiber: polyester chips with a viscosity of 0.64-0.66 dL / g and modifiers, antioxidants and dispersants are mixed in a ratio of 95:3:1:1, vacuum dried and mixed, and then melt granulated by a twin-screw extruder, wherein the modifier is a mixture of nano titanium dioxide with a particle size of 60-80 nm, polyethylene glycol and, the antioxidant is phosphite, and the dispersant is butyl stearate, to obtain a modified masterbatch, and then the modified masterbatch is mixed with polyester chips with a viscosity of 0.64-0.66 dL / g in a ratio of 3:97, and then melt-spun after vacuum drying at 120° C. for 12 hours, with a spinning temperature of 283° C., a spinning speed of 3800 m / min, and a draft multiple of 2.4 times to prepare the modified polyester fiber;

[0055] Loose fiber dyeing: Place the modified polyester fiber in an aqueous solution containing SD type disperse cationic dyes and 1631 surfactants, heat it to 75°C, then heat it to 100°C at a rate of 1°C / min, wash it in a warm state and then take it out of the vat; Place the modal fiber in an aqueous solution containing reactive dyes and auxiliaries, heat it to 60°C at a rate of 1°C / min, wash it in a warm state and then take it out of the vat; Place the wool in an aqueous solution containing reactive dyes and auxiliaries for wool, heat it to 60°C at a rate of 1°C / min, then heat it to 90°C at a rate of 1°C / 1.5min, wash it in a warm state and then take it out of the vat; First, place the mulberry silk in water and heat it to 100°C to pre-treat the mulberry silk for 60 minutes and then wash it, then add auxiliaries and reactive dyes to the water, heat it to 60°C at a rate of 1°C / min, wash it in a warm state and then take it out of the vat;

[0056] Colored yarn forming: 40% modified polyester fiber, 50% modal fiber, 5% wool and 5% mulberry silk are obtained through the processes of wool and wool, carding, drawing, roving, spinning, doubling and twisting. The specific parameters are: carding feeding length is 40mm, licker-in speed is 560r / min, cylinder speed is 245r / min, number of drawing roots is 6-8, drawing draft is 8-11 times, three times in total, quantitative 10g / 3m; roving draft is 7.5 times, roving viscosity is 40T / M, roving quantitative 4g / 10m; spinning front roller speed is 15m / min, spinning draft is 1.167 times × 49.3 times, spinning spindle speed is 15000r / min, doubling speed is 1000m / min; two-for-one twisting spindle speed is 9000r / min;

[0057] Fabric forming: The obtained colored yarn finished product is set to 72 / 3Nm, 14 needles, double rib structure, and knitted into a fabric using a flat knitting machine;

[0058] Washing and ironing: each fabric piece is put into the seam machine for the seam, and after washing and ironing, a warm and anti-pilling fiber blended knitted skirt is obtained.

[0059] The warm anti-pilling fiber blended knitted skirt prepared in Example 1 and Example 2 of the present invention has a delicate hand feel, soft drape, an anti-pilling grade of 3.5, and an antistatic performance of 10 7 ~10 8 Ω·cm, the far-infrared emissivity is greater than 0.88, and the far-infrared temperature rise reaches 2.8℃, which is much higher than the national standard of 1.4℃. It has excellent thermal insulation performance and meets people's requirements for knitted clothing.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a warm anti-pilling fiber blended knitted skirt, characterized in that: The following steps are involved: (1) mixing the dried polyester chips, the modifier, the antioxidant and the dispersant uniformly, and melt-granulating the mixture through a twin-screw extruder to obtain a modified masterbatch, and then uniformly mixing the modified masterbatch with the polyester chips, melt-spinning the mixture, and cooling, bundling, oiling, drawing, shaping and winding the mixture to obtain a modified polyester fiber; (2) placing the modified polyester fiber in an aqueous solution containing a cationic dye and an auxiliary agent, heating the solution for dyeing, and washing the solution; (3) using the dyed modified polyester fiber as the main raw material, adding at least one of cashmere, wool, mulberry silk or modal fiber, and performing colored yarn forming, wool and wool, carding, drawing, roving, spun yarn, doubling and twisting to obtain colored yarn; (4) knitting the colored yarn, knitting the yarn, washing and ironing the yarn to obtain the warm and anti-pilling fiber blended knitted skirt.

2. The method for preparing a warm and anti-pilling fiber blended knitted skirt according to claim 1, characterized in that: In step (1), the viscosity of the polyester chips is 0.58 to 0.66 dL / g.

3. The method for preparing a warm and anti-pilling fiber blended knitted skirt according to claim 1, characterized in that: In step (1), the modifier is selected from at least one of nano titanium dioxide, nano silicon dioxide or polyether ester; The antioxidant is selected from at least one of phosphite compounds, hindered phenol compounds, and thioester compounds; The dispersant is selected from at least one of fatty acid ester compounds, stearate compounds, stearamide compounds, and polyethylene wax.

4. The method for preparing a warm and anti-pilling fiber blended knitted skirt according to claim 1, characterized in that: In step (1), the mass ratio of polyester chips, modifier, antioxidant and dispersant in the modified masterbatch is 95:1-3:1-2:1-2; The mass ratio of the modified masterbatch to the polyester chips is 3-8:92-97.

5. The method for preparing a warm and anti-pilling fiber blended knitted skirt according to claim 1, characterized in that: In step (1), the melt spinning parameters are: temperature 280-285° C., spinning speed 3500-4000 m / min, number of spinneret holes 24-72, and drafting multiple 1.5-3.5 times.

6. The method for preparing a warm and anti-pilling fiber blended knitted skirt according to claim 1, characterized in that: In step (2), the cationic dye is selected from at least one of E-type migrating cationic dyes, cationic dyes for modified synthetic fibers, and SD-type disperse cationic dyes; The auxiliary agent is selected from at least one of 1227 surfactant, 1631 surfactant, and retarder A; In the aqueous solution containing the cationic dye and the auxiliary agent, the concentration of the cationic dye is 0.05-3% (owf), and the concentration of the auxiliary agent is 0-2% (owf).

7. The method for preparing a warm and anti-pilling fiber blended knitted skirt according to claim 1, characterized in that: In step (2), the specific steps of the temperature-raising dyeing are: firstly, the temperature is raised to 75°C, then the temperature is raised to 100°C at a heating rate of 1°C / min, and the dye is washed and taken out of the tank after heat preservation.

8. The method for preparing a warm and anti-pilling fiber blended knitted skirt according to claim 1, characterized in that: In step (3), the colored yarn comprises 35-50% of dyed modified polyester fiber, 0-10% of cashmere, 0-10% of wool, 0-10% of mulberry silk, and 0-50% of modal fiber.

9. The method for preparing a warm and anti-pilling fiber blended knitted skirt according to claim 1, characterized in that: In step (3), the colored yarn is formed by semi-worsted siro spinning with a humidity of 65-75%; In step (4), the knitting parameters are: using a plain needle or rib structure, 72 / 3Nm~85 / 3Nm, 14~16 needles, and making a woven piece on a flat knitting machine.

10. A warm and anti-pilling fiber blended knitted skirt obtained according to the preparation method according to any one of claims 1 to 9.