阅读说明：本技术 一种双组分聚酯仿棉弹性针织面料及其制备方法 (Bi-component polyester cotton-like elastic knitted fabric and preparation method thereof ) 是由 胡黎攀 何立锋 钟国能 雍二园 毛永强 于 2021-09-28 设计创作，主要内容包括：本发明提供了一种双组分聚酯仿棉弹性针织面料及其制备方法,所述面料织物组织为变化罗马布组织,所述面料由双组份仿棉弹性复合丝与涤纶长丝交织形成,所述双组份仿棉弹性复合丝是由PTT/PET复合丝与全消光普通涤纶POY加工形成的拉伸变形丝。本申请采用双组份仿棉弹性复合丝与常规涤纶交织,使得面料表面呈现粗犷与细腻相结合的独特条纹肌理,同时原料带来的特性使得面料具有优异的尺寸稳定性、抗污性、抗皱性、耐磨性和易染色性,含有双组份仿棉弹性复合丝的面料再加上在生产工艺中增加的平幅水洗工序和磨毛工序,使得该面料更为接近棉料蓬松柔软的触感,在外观上也同样更接近棉料。(The invention provides a bi-component polyester cotton-like elastic knitted fabric and a preparation method thereof, wherein the fabric texture of the fabric is a variable Roman fabric texture, the fabric is formed by interweaving bi-component cotton-like elastic composite yarns and polyester filament yarns, and the bi-component cotton-like elastic composite yarns are tensile deformation yarns formed by processing PTT/PET composite yarns and full-dull ordinary polyester POY. This application adopts two ingredient imitative cotton elasticity composite filament to interweave with conventional dacron for the surface fabric surface presents the unique stripe skin texture that roughness and exquisiteness combined together, and the characteristic that the raw materials brought simultaneously makes the surface fabric have excellent dimensional stability, antipollution, crease resistance, wearability and stainability, and the surface fabric that contains two ingredient imitative cotton elasticity composite filament in addition the open width washing process and the mill hair process that increase in production technology, makes this surface fabric more be close the fluffy soft sense of touch of cotton material, also more is close the cotton material in the outward appearance.)

1. The double-component polyester cotton-like elastic knitted fabric is characterized in that the fabric texture is a variable Roman fabric texture, the fabric is formed by interweaving double-component cotton-like elastic composite yarns and polyester filament yarns, and the double-component cotton-like elastic composite yarns are tensile deformation yarns formed by processing PTT/PET composite yarns and full-dull ordinary polyester POY.

2. The bicomponent polyester cotton-like elastic knitted fabric according to claim 1, wherein the thickness ratio of the cotton-like elastic composite yarns to the polyester filaments is in a range of 2:3 to 5: 6.

3. The two-component polyester cotton-like elastic knitted fabric according to claim 2, wherein the yarn count thickness range of the two-component cotton-like elastic composite yarn is 50D-180D, and the yarn count thickness range of the polyester filament yarn is 100D-300D.

4. The two-component polyester cotton-like elastic knitted fabric according to claim 3, wherein the fabric is knitted by 8 loops, wherein 1, 2, 3, 4, 5 and 6 loops are connected with the two-component cotton-like elastic composite yarns, and 7 and 8 loops are connected with the polyester filaments.

5. The two-component polyester cotton-like elastic knitted fabric according to claim 4, wherein knitting needles are arranged in an upper dial AB sequence and a lower dial BA sequence when the fabric is knitted, wherein A represents a high-heel needle and B represents a low-heel needle; the 1 st and 2 nd paths weave the interlock texture, namely the 1 st path upper needle dial and the lower needle cylinder high-heel needle all participate in weaving, and the low-heel needle all do not participate in working; on the 2 nd path, the needle dial and the lower needle cylinder low-heel needles all participate in knitting, and the high-heel needles all do not participate in working; the upper dial knitting needles on the 3 rd path do not participate in the work, and the lower cylinder knitting needles all participate in the knitting; the knitting needles of the lower needle cylinder of the 4 th path do not participate in the work, and the knitting needles of the upper dial all participate in the knitting; the 5 th and 6 th paths are knitted with the interlock texture, namely, the 5 th paths of upper needle dial and lower needle cylinder high-heel needles are all involved in knitting, and the low-heel needles are all not involved in working; the upper dial and the lower needle cylinder low-heel needles on the 6 th path are all involved in knitting, and the low-high needles are all not involved in working; the 7 th path of upper dial knitting needles do not participate in the work, and the lower cylinder knitting needles all participate in the knitting; and the knitting needles of the lower needle cylinder in the 8 th path do not participate in the work, and the knitting needles of the upper needle disc all participate in the knitting.

6. A method for preparing a fabric, wherein the method is used for preparing the bi-component polyester cotton-like elastic knitted fabric as claimed in any one of claims 1 to 5, and the method comprises the following steps:

s1, preparing yarn count;

s2, weaving the fabric;

and S3, dyeing and finishing.

7. The method for preparing fabric according to claim 6, wherein the step S3 includes:

s31, open width water washing;

s32, pre-shaping the blank;

s33, dyeing;

s34, sanding;

and S35, performing compound shaping.

8. The method for preparing fabric according to claim 7, wherein the step S31, open width water washing comprises: and (5) feeding the fabric woven in the step (S2) into an open width machine in an open width smooth state for washing, wherein the temperature is 60-80 ℃, and the speed is 15-25 m/min.

9. The method for preparing fabric according to claim 7, wherein the step S33, dyeing comprises: and (3) immersing the blank subjected to the pre-shaping into a dye vat, wherein the bath ratio is 1: step 10, adopting disperse dye, performing segmented temperature control dyeing, and performing reduction cleaning after dyeing; wherein the disperse dye comprises: 2-3% of dye, 2-3g/L of leveling agent, 1.5-3g/L of chelating dispersant, 3-5g/L of sodium acetate and HAc (pH4.5-5); the segmented temperature control process comprises the following steps: heating to 85 deg.C at 1.5 deg.C/min from normal temperature, maintaining for 5min, heating to 120 deg.C at 1.5 deg.C/min, maintaining for 40-50 min, and cooling to 70 deg.C at 2 deg.C/min; the cleaning solution for reduction cleaning comprises: 2.5g/L of Na2CO3 and 2.5g/L of sodium hydrosulfite.

10. The method for preparing a fabric according to claim 7, wherein the step S34 includes: and (4) sanding the fabric dyed in the step (S33) on a carbon sanding machine, wherein the sanding speed is 16-20 m/min, and the sanding times are 2 times.

Technical Field

The invention relates to the technical field of textiles, in particular to a bi-component polyester cotton-like elastic knitted fabric and a preparation method thereof.

Background

With the continuous development of science and technology, textile fabrics meeting different requirements of people are in a large quantity to meet the requirements of consumers, play an increasingly important role in daily life of people, and are becoming mainstream fabric fibers of clothes worn by people gradually due to rapid productivity. The varieties of chemical fiber components are increasing, so that the formed fabric has many functions.

However, the existing fabrics in the market are mainly focused on the functionality and lack of fashionability; or mainly pay attention to the fashionability, and have various functional defects, such as not soft hand feeling, not good skin-friendly property, no health care function and the like, for example: the traditional synthetic fiber fabric has the defects of poor moisture absorption, poor comfort and poor air permeability, while the cellulose fabric has the defects of easy wrinkle and deformation, poor shrinkage, poor strength, easy whitening after washing and the like; the conventional fabric has no elasticity and poor stretching recovery; the fabric containing naked ammonia has high requirements on a weaving dyeing and finishing process, the fabric is heavy and thick, the air permeability is insufficient, and the phenomenon of spandex breaking is easily caused in the using process, so that the fabric is poor in practicability and the appearance is influenced; the appearance style of the conventional fabric is set in the market, so that consumers feel stuffy.

The present application is proposed to solve the above technical problems.

Disclosure of Invention

The invention solves the technical problems that in the prior art, the cotton-like fiber fabric generally has poor elasticity and poor stretching recovery performance, so that the wearing comfort level is reduced, and the appearance style of the fabric is shaped, so that consumers feel bored easily.

The invention designs a bi-component polyester cotton-like elastic knitted fabric and a preparation method thereof, and provides a fabric which has the advantages of cotton and terylene and avoids the defects of the cotton and terylene.

In order to solve the problems, the invention discloses a double-component polyester cotton-like elastic knitted fabric, wherein the fabric texture of the fabric is a variable Roman fabric texture, the fabric is formed by interweaving double-component cotton-like elastic composite yarns and polyester filament yarns, and the double-component cotton-like elastic composite yarns are tensile deformation yarns formed by processing PTT/PET composite yarns and full-dull ordinary polyester POY.

The composite yarn formed by the PTT fiber and PET fiber parallel composite spinning has a permanent main body spiral structure, so that the composite yarn not only has excellent deformability and resilience as a spring, but also has excellent dimensional stability, stain resistance, wrinkle resistance, wear resistance and dyeability, and overcomes the problems that the common spandex core-spun yarn in the prior art has large friction coefficient, is easy to produce accidental elongation and uneven tension in the manufacturing process, and is easy to produce static electricity, hygroscopicity and poor dyeability in the manufacturing process.

Furthermore, the thickness ratio range of the cotton-like elastic composite yarns to the polyester filament yarns is 2: 3-5: 6.

The arrangement can enable the cotton-like elastic composite yarns to occupy a larger proportion, so that the produced fabric has appearance and hand feeling which are closer to those of cotton materials, and the polyester feeling is prevented from being obvious due to overhigh content of polyester filaments.

Further, the yarn count thickness range of the two-component cotton-like elastic composite yarn is 50D-180D, and the yarn count thickness range of the polyester filament yarn is 100D-300D.

The double-component cotton-like elastic composite yarn and the polyester filament yarn have certain difference in thickness due to the arrangement, and a certain concave-convex structure is formed between the stripes on the surface of the fabric formed by knitting, so that the fabric has better touch feeling.

Furthermore, the fabric is woven in 8 paths in a circulation mode, wherein 1, 2, 3, 4, 5 and 6 paths are connected with the double-component cotton-like elastic composite yarns, and 7 and 8 paths are connected with the polyester filaments.

The arrangement can form wider rough stripes and narrower fine stripes on the fabric, wherein the rough stripes are patterns formed on the surface of the fabric by the double-component cotton-like elastic composite yarns, and the fine stripes are patterns formed on the surface of the fabric by the polyester filaments, so that the produced fabric forms unique stripe textures, the fashion of the product is improved, and the attention of consumers is attracted more easily.

Furthermore, the arrangement mode of the knitting needles during the fabric knitting is that the upper needle disks AB are arranged in sequence, the lower needle disks BA are arranged in sequence, wherein A represents a high-heel needle, B represents a low-heel needle, and the 1 st and 2 nd paths are knitted with interlock texture, namely the upper needle disks and the high-heel needles of the lower needle cylinders on the 1 st path are all involved in knitting, and the low-heel needles are not all involved in working; on the 2 nd path, the needle dial and the lower needle cylinder low-heel needles all participate in knitting, and the high-heel needles all do not participate in working; the upper dial knitting needles on the 3 rd path do not participate in the work, and the lower cylinder knitting needles all participate in the knitting; the knitting needles of the lower needle cylinder of the 4 th path do not participate in the work, and the knitting needles of the upper dial all participate in the knitting; the 5 th and 6 th paths are knitted with the interlock texture, namely, the 5 th paths of upper needle dial and lower needle cylinder high-heel needles are all involved in knitting, and the low-heel needles are all not involved in working; the upper dial and the lower needle cylinder low-heel needles on the 6 th path are all involved in knitting, and the low-high needles are all not involved in working; the 7 th path of upper dial knitting needles do not participate in the work, and the lower cylinder knitting needles all participate in the knitting; and the knitting needles of the lower needle cylinder in the 8 th path do not participate in the work, and the knitting needles of the upper needle disc all participate in the knitting.

This setting makes and forms the structure of drawing from top to bottom between the cylinder, is favorable to weaving the even atress between each part of fashioned surface fabric, helps keeping the level and smooth of surface fabric, avoids appearing the condition such as turn-up, and makes the decorative pattern on surface fabric two sides is the same, and because the yarn of 7, 8 ways is different with other ways for the clear nature of surface fabric surface line.

The invention also discloses a preparation method of the fabric, which is used for preparing the bi-component polyester cotton-like elastic knitted fabric and comprises the following steps:

s1, preparing yarn count;

s2, weaving the fabric;

and S3, dyeing and finishing.

Further, the step S3 includes:

s31, open width water washing;

s32, pre-shaping the blank;

s33, dyeing;

s34, sanding;

and S35, performing compound shaping.

Further, the step S31 includes: and (3) feeding the fabric into an open width machine for washing in an open width smooth state, wherein the washing temperature is 60-80 ℃, and the speed is 15-25 m/min.

The step of open width water washing is added before the pre-setting, so that the fabric is fully retracted after being heated, crease and wrinkle marks are not easy to generate, and better appearance and hand feeling of the fabric are obtained.

Further, in step S33, the dyeing includes: and (3) immersing the blank subjected to the pre-shaping into a dye vat, wherein the bath ratio is 1: step 10, adopting disperse dye, performing segmented temperature control dyeing, and performing reduction cleaning after dyeing; wherein the disperse dye comprises: 2-3% of dye, 2-3g/L of leveling agent, 1.5-3g/L of chelating dispersant, 3-5g/L of sodium acetate and HAc (pH 4.5-5); the segmented temperature control process comprises the following steps: heating to 85 deg.C at 1.5 deg.C/min from normal temperature, maintaining for 5min, heating to 120 deg.C at 1.5 deg.C/min, maintaining for 40-50 min, and cooling to 70 deg.C at 2 deg.C/min; the cleaning solution for reduction cleaning comprises: 2.5g/L of Na₂CO₃And 2.5g/L sodium hydrosulfite.

Further, the step S34 includes: and (4) sanding the fabric dyed in the step (S33) on a carbon sanding machine, wherein the sanding speed is 16-20 m/min, and the sanding times are 2 times.

This setting can form villiform with the fibre grinding on surface fabric surface to the surface that makes the surface of surface fabric is more fluffy soft, is close to the feel of cotton material more, also is more close to the skin simultaneously.

The double-component polyester cotton-like elastic knitted fabric and the preparation method thereof have the following advantages:

firstly, the two-component polyester cotton-like elastic knitted fabric provided by the application is formed by interweaving two-component cotton-like elastic composite yarns and conventional polyester, so that the fabric has appearance and hand feeling similar to those of cotton;

secondly, the fabric interwoven by the bicomponent polyester elastic fiber of the bicomponent polyester cotton-like elastic knitted fabric and the conventional polyester has excellent dimensional stability, stain resistance, wrinkle resistance, wear resistance and easy dyeability;

thirdly, the fabric interwoven by the bicomponent polyester elastic fiber and the conventional polyester of the bicomponent polyester cotton-like elastic knitted fabric forms unique stripe textures combining roughness and fineness, so that the fabric is more fashionable and more attractive to users;

fourth, this application has increased before the dyeing and finishing presetting and has set up open width washing process for the blank fully retracts, then has increased after the presetting and has set up the mill hair technology, makes the surface fabric that this application provided more be close the fluffy softness of cotton material, also more skin-friendly.

Drawings

FIG. 1 is a knitting needle arrangement view of a bicomponent polyester cotton-like elastic knitted fabric according to an embodiment of the present invention;

FIG. 2 is a triangular arrangement view of a bicomponent polyester cotton-like elastic knitted fabric according to an embodiment of the present invention;

FIG. 3 is a knitting diagram of a bicomponent polyester cotton-like elastic knitted fabric according to an embodiment of the present invention;

FIG. 4 is a pattern effect diagram of the bicomponent polyester cotton-like elastic knitted fabric according to the embodiment of the invention;

fig. 5 is a real surface view of the bicomponent polyester cotton-like elastic knitted fabric according to the embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention.

The following describes a bicomponent polyester cotton-like elastic knitted fabric and a preparation method thereof according to an embodiment of the present invention in detail with reference to the accompanying drawings.

Example 1

The fabric texture of the double-component polyester cotton-like elastic knitted fabric is a variable Roman fabric texture, the fabric is formed by interweaving double-component cotton-like elastic composite yarns and polyester filament yarns, and the double-component cotton-like elastic composite yarns are tensile deformation yarns formed by processing PTT/PET composite yarns and full-dull ordinary polyester POY. Wherein, the PTT fiber is polytrimethylene terephthalate, the PET fiber is polyethylene glycol terephthalate, the PTT fiber is semi-crystalline thermoplastic polyester, the special molecular chain structure of the PTT fiber brings high rebound resilience, and has the advantages of easy dyeing, high color fastness and good chlorine resistance, the PET fiber has stable size and shape, good stiffness and good shrinkage resistance, the composite core spun yarn formed by the PTT fiber and the PET fiber in parallel composite spinning has a permanent main body spiral structure, so that the composite core spun yarn not only has excellent deformability and rebound capability as a spring, but also has excellent size stability, stain resistance, wrinkle resistance, wear resistance and easy dyeing property, and the problems of large friction coefficient of common spandex yarn in the prior art, easy generation of accidental extension and tension in the manufacturing process, and easy generation of static electricity, moisture absorption and poor dyeability in the manufacturing process are overcome, however, the PTT/PET composite yarn has the disadvantage of too strong polyester feeling, and is processed into draw textured yarn with different boiling-shrinkage full-dull ordinary polyester by POY, so that each fiber of the yarn can be separated into fluffy shape, and the fabric has the appearance and hand feeling of cotton, the cost is far lower than that of cotton material, the roman cloth structure is changed to make the patterns of the front and back of the fabric identical, and different spaced stripes are formed on the front and back of the fabric through the interweaving of the cotton-like elastic composite yarn and the polyester filament, which is more beneficial to attracting the attention of consumers and is beneficial to popularization and use.

As an embodiment of the invention, the yarn connecting ratio of the cotton-like elastic composite yarn to the polyester filament yarn is 3:1, the thickness ratio range of the cotton-like elastic composite yarn to the polyester filament yarn is 2: 3-5: 6, the arrangement can enable the cotton-like elastic composite yarn to occupy a larger proportion, so that the produced fabric has appearance and hand feeling which are closer to those of cotton materials, and the polyester feeling is prevented from being obvious due to the fact that the content of the polyester filament yarn is too high, meanwhile, the fabric has more excellent wearing characteristics compared with the cotton materials, such as size stability, dirt resistance, wrinkle resistance, wear resistance and dyeing property, which are greatly improved compared with the existing cotton materials, in addition, the cotton-like elastic composite yarn and the polyester filament yarn form stripes with different styles, the fashion of the fabric is obviously improved, and the fabric is beneficial to attract users, and the yarn connecting ratio of the cotton-like elastic composite yarn to the polyester filament yarn can also be other proportions, different styles of cotton-like elastic fabrics can be obtained, and are not limited herein.

According to the embodiment of the invention, the yarn count thickness range of the two-component cotton-like elastic composite yarn is 50D-180D, the yarn count thickness range of the polyester filament yarn is 100D-300D, the thickness of the two-component cotton-like elastic composite yarn and the thickness of the polyester filament yarn have certain difference, and a certain concave-convex structure is formed between surface stripes of the fabric formed by knitting, so that the fabric has better touch feeling.

In this embodiment, as shown in fig. 4, the fabric is woven in 8 paths in a cycle, wherein paths 1, 2, 3, 4, 5, and 6 are connected with the two-component cotton-like elastic composite yarn, and paths 7 and 8 are connected with the polyester filament yarn, and since raw materials adopted in the 7 and 8 paths are different from those of other paths, a significant contrast pattern is formed on the surface of the fabric, and then the two-component cotton-like elastic composite yarn is continuously woven in multiple paths, so as to form a wider rough stripe and a narrower fine stripe on the fabric, wherein the rough stripe is a pattern formed on the surface of the two-component cotton-like elastic composite yarn, and the fine stripe is a pattern formed on the surface of the fabric, so that the produced fabric forms a unique stripe texture, the fashion of the product is improved, and the attention of consumers is attracted more easily.

In this embodiment, the knitting machine is a circular weft knitting machine, and as shown in fig. 1 to 3, the arrangement of the knitting needles during the fabric knitting is that an upper dial AB is arranged in sequence and a lower dial BA is arranged in sequence, wherein a represents a high-heel needle, B represents a low-heel needle, and the needle pitch is 20G to 40G. This setting makes and forms the structure of drawing to each other between the upper and lower cylinder, is favorable to weaving the even atress between the fashioned surface fabric each part, helps keeping the level and smooth of surface fabric, avoids appearing the condition such as turn-up.

According to the arrangement sequence of the knitting needles, the knitting needles work as follows when the fabric is knitted: the 1 st and 2 nd paths weave the interlock texture, namely the 1 st path upper needle dial and the lower needle cylinder high-heel needle all participate in weaving, and the low-heel needle all do not participate in working; on the 2 nd path, the needle dial and the lower needle cylinder low-heel needles all participate in knitting, and the high-heel needles all do not participate in working; the upper dial knitting needles on the 3 rd path do not participate in the work, and the lower cylinder knitting needles all participate in the knitting; the knitting needles of the lower needle cylinder of the 4 th path do not participate in the work, and the knitting needles of the upper dial all participate in the knitting; the 5 th and 6 th paths are knitted with the interlock texture, namely, the 5 th paths of upper needle dial and lower needle cylinder high-heel needles are all involved in knitting, and the low-heel needles are all not involved in working; the upper dial and the lower needle cylinder low-heel needles on the 6 th path are all involved in knitting, and the low-high needles are all not involved in working; the 7 th path of upper dial knitting needles do not participate in the work, and the lower cylinder knitting needles all participate in the knitting; and the knitting needles of the lower needle cylinder in the 8 th path do not participate in the work, and the knitting needles of the upper needle disc all participate in the knitting. The two surfaces of the fabric are identical in pattern, the 7 and 8 paths of yarns are different from the other paths of yarns, so that the surface of the fabric forms an interval stripe structure, the double-component cotton-like elastic composite yarn forms rough stripes on the surface of the fabric, and the polyester filament yarns form fine stripes on the surface of the fabric, so that the surface of the fabric forms wider rough stripes and narrower fine stripes, and the surface of the fabric has clear and natural lines.

In some embodiments, the proportion of the PTT fibers to the PET fibers in the PTT/PET composite yarn is 1: 1-3: 2, the cost of the PTT/PET composite yarn in the arrangement is far lower than that of the fabric, but the formed permanent main body spiral structure has all the advantages of the PTT fibers and the PET fibers, so that the performance of the finally formed fabric is superior to that of the existing cotton material, preferably, the proportion of the PTT fibers to the PET fibers in the PTT/PET composite yarn is 3:2, and the optimal composite yarn performance can be obtained.

Preferably, the ratio of the PTT/PET composite yarns in the two-component cotton-like elastic composite yarns to the full-dull ordinary polyester is 1: 1-2: 3, the arrangement can effectively reduce the polyester feeling of the PTT/PET composite yarns, so that the two-component cotton-like elastic composite yarns have the appearance and hand feeling of cotton materials, and preferably, the ratio of the PTT/PET composite yarns in the two-component cotton-like elastic composite yarns to the full-dull ordinary polyester is 2:3, so that the best performance of the two-component cotton-like elastic composite yarns can be obtained.

Example 2

A method of making a fabric for making the fabric of example 1 above, the method comprising the steps of:

s1, preparing yarn count;

s2, weaving the fabric;

and S3, dyeing and finishing.

Further, in step S1, the yarn count preparing process includes: selecting two-component cotton-like elastic composite yarns and polyester filament yarns as weaving materials.

Preferably, in the step S1, the bicomponent cotton-like elastic composite yarn with a thickness of 50D-180D and the polyester filament yarn with a thickness of 100D-300D are selected as the weaving material.

In the fabric shown in fig. 5, the thickness of the two-component cotton-like elastic composite yarn is 125D, the thickness of the polyester filament yarn is 150D, the fabric can obtain the appearance and the hand feeling similar to those of cotton, and the wearability of the fabric is far higher than that of cotton fabric.

Further, in the step S2, the fabric is woven by a weft circular knitting machine, the stitch length is 20-40G,

specifically, in step S2, the fabric weaving process includes: the arrangement mode of the knitting needles during the fabric knitting is that an upper needle disc AB is arranged in sequence, a lower needle disc BA is arranged in sequence, wherein A represents a high-heel needle, B represents a low-heel needle, and the knitting needles during the fabric knitting have the following working conditions: the 1 st and 2 nd paths weave the interlock texture, namely the 1 st path upper needle dial and the lower needle cylinder high-heel needle all participate in weaving, and the low-heel needle all do not participate in working; on the 2 nd path, the needle dial and the lower needle cylinder low-heel needles all participate in knitting, and the high-heel needles all do not participate in working; the upper dial knitting needles on the 3 rd path do not participate in the work, and the lower cylinder knitting needles all participate in the knitting; the knitting needles of the lower needle cylinder of the 4 th path do not participate in the work, and the knitting needles of the upper dial all participate in the knitting; the 5 th and 6 th paths are knitted with the interlock texture, namely, the 5 th paths of upper needle dial and lower needle cylinder high-heel needles are all involved in knitting, and the low-heel needles are all not involved in working; the upper dial and the lower needle cylinder low-heel needles on the 6 th path are all involved in knitting, and the low-high needles are all not involved in working; the 7 th path of upper dial knitting needles do not participate in the work, and the lower cylinder knitting needles all participate in the knitting; and the knitting needles of the lower needle cylinder in the 8 th path do not participate in the work, and the knitting needles of the upper needle disc all participate in the knitting.

Further, in the step S2, the 1 st, 2 nd, 3 th, 4 th, 5 th and 6 th paths are knitted by using 50D-180D bicomponent cotton-like elastic composite yarns; and weaving the 7 th path and the 8 th path by using 100D-300D polyester filaments, wherein the thickness ratio of the two-component cotton-like elastic composite filaments to the polyester filaments is 2: 3-5: 6.

Further, in the step S3, the dyeing and finishing process includes the steps of:

s31, open width water washing;

s32, pre-shaping the blank;

s33, dyeing;

s34, sanding;

and S35, performing compound shaping.

Wherein, in the step S31, the open width water washing includes: and (5) feeding the fabric woven in the step (S2) into an open width machine in an open width smooth state for washing, wherein the temperature is 60-80 ℃, and the speed is 15-25 m/min. After the gray fabric is put on a loom, the width of the fabric is large, and the gray fabric is directly pre-shaped at the moment, so that the radial shrinkage degree is easy to be insufficient, and further the gram weight and the fullness and thickness of the hand feeling of the fabric are influenced.

In this embodiment, in step S32, the pre-shaping the blank includes: and (2) performing high-temperature presetting on the fabric subjected to open width water washing in the step S31 at 170-180 ℃, wherein the speed is 20-30 m/min, the overfeeding is 12-25%, the weft stretching is 0-6%, preferably, the presetting temperature is 175 ℃, the speed is 25m/min, and the overfeeding is 15%, and the setting can prevent the fabric from being thinned or collapsed in the subsequent dyeing process.

As an embodiment of the present invention, the step S33, dyeing, includes: and (3) immersing the blank subjected to the pre-shaping into a dye vat, wherein the bath ratio is 1: step 10, adopting disperse dye, performing segmented temperature control dyeing, and performing reduction cleaning after dyeing; wherein the disperse dye comprises: 2-3% of dye, 2-3g/L of leveling agent, 1.5-3g/L of chelating dispersant, 3-5g/L of sodium acetate and HAc (pH 4.5-5); the segmented temperature control process comprises the following steps: heating to 85 ℃ from normal temperature at a speed of 1.5 ℃/min, preserving heat for 5min, then continuing heating to 120 ℃ at a speed of 1.5 ℃/min, preserving heat for 40-50 min, and cooling to 70 ℃ at a speed of 2 ℃/min, wherein the cleaning solution for reduction cleaning comprises: 2.5g/L of Na₂CO₃And 2.5g/L sodium hydrosulfite.

Further, in step S34, the sanding includes: the carbon sanding machine is used for sanding, wherein the sanding speed is 16-20 m/min, the sanding times are 2 times, and the fibers on the surface of the fabric can be ground into villiform fibers, so that the surface of the fabric is fluffy and soft, is closer to the hand feeling of cotton materials, and is more skin-friendly, preferably, the sanding speed is 18 m/min.

Further, in step S35, the performing includes: and (3) performing re-setting treatment on the fabric dyed in the step S34 at 130-150 ℃, wherein the speed is 22-28 m/min, and the overfeeding is 18-22%, and the finally-formed bi-component polyester cotton-like elastic knitted fabric is obtained through the setting, preferably, the re-setting temperature is 150 ℃, the speed is 25m/min, and the overfeeding is 20%.

In summary, it is easy to obtain: the fabric and the preparation method thereof provided by the embodiment have the following advantages:

firstly, the two-component polyester cotton-like elastic knitted fabric provided by the application is formed by interweaving two-component cotton-like elastic composite yarns and conventional polyester, so that the fabric has appearance and hand feeling similar to those of cotton;

secondly, the fabric interwoven by the bicomponent polyester elastic fiber of the bicomponent polyester cotton-like elastic knitted fabric and the conventional polyester has excellent dimensional stability, stain resistance, wrinkle resistance, wear resistance and easy dyeability;

thirdly, the fabric interwoven by the bicomponent polyester elastic fiber and the conventional polyester of the bicomponent polyester cotton-like elastic knitted fabric forms unique transverse bar texture combining roughness and fineness, so that the fabric is more fashionable and more attractive to users;

fourth, this application has increased before the dyeing and finishing presetting and has set up open width washing process for the blank fully retracts, then has increased after the presetting and has set up the mill hair technology, makes the surface fabric that this application provided more be close the fluffy softness of cotton material, also more skin-friendly.

Although the present invention is disclosed above, the present invention is not limited thereto. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.