Differently textured fabric and manufacturing method therefor

Abstract

A differently textured fabric and a manufacturing method therefor. The differently textured fabric comprises a plain surface and a fleece surface. The shrinkage rate of yarns used for the plain surface is 14-16%, and the shrinkage rate of yarns used for the fleece surface is 9-10%. The shrinkage rate of connecting yarns connecting the plain surface and the fleece surface is 29-31%. The differently textured fabric is manufactured using a circular knitting machine. The height of a needle cylinder in the circular knitting machine is 124 mm. A cam (1) is provided with a running passage (2). The running passage (2) is divided into a feeder section (21), a needle jack section (22), a presser section (23), a shoulder section (24), a sinking section (25) and a backstitching section (26) sequentially. There is an arc-shaped angle (3) between the needle jack section (22) and the presser section (23). The distance between a lower vertex (32) of the arc-shaped angle (3) and the bottom surface of the cam (1) is 18.85-21.35 mm. The distance between the lower inner wall of the backstitching section (26) and the bottom surface of the cam (1) is 6.35-7.85 mm. The width of the running passage (2) is 3.151-3.153 mm. The fabric is relatively thick, and the preparation process is energy-saving and environmentally-friendly.

Description

Different-print fabric and preparation method thereof Technical Field

[0001] The present application relates to the field of fabrics, and more specifically, to a different-print fabric and a preparation method thereof. Background Art

[0002] Pile fabric is a fabric that has been treated with pile to give it a velvet or plush appearance. The pile treatment can improve the style and appearance of the fabric, increase the wooly feel and warmth of the fabric surface, make the fabric fluffy and thick, and feel soft, and the added value of the fabric will also be enhanced.

[0003] At present, in order to increase the thickness of pile fabrics, a single layer of pile fabric is generally compounded with other single layers of plain fabrics, or the plain surface and the pile surface are woven together using a circular loom. For the former compounding method, adhesive glue is required during the compounding, and there will be more or less harmful substances in the adhesive glue. The adhesive glue used in the fabric production and processing process and even in the subsequent use of the fabric will have a certain degree of impact on the human body. For the latter weaving method, the thickness of the obtained fabric is only the thickness of the plain surface plus the pile surface, and the thickness of the fabric is not enough to meet the requirements of enterprises for increasing the thickness of the fabric.

[0004] Therefore, how to solve the above problems is very necessary.

[0005] Summary of the Invention

[0006] In order to increase the thickness of the fabric, the present application provides a different-pattern fabric and a preparation method thereof.

[0007] In the first aspect, the present application provides a different-print fabric, which adopts the following technical solution:

[0008] An anti-pilling fabric with different patterns, comprising a plain surface and a velvet surface, wherein the shrinkage rate of the yarn used for the plain surface is 14-16%, the shrinkage rate of the yarn used for the velvet surface is 9-10%, and the shrinkage rate of the connecting yarn connecting the plain surface and the velvet surface is 29-31%.

[0009] The height of the needle cylinder in the large circular knitting machine used to make different-edition fabrics is 124mm. The triangle in the large circular knitting machine is provided with a needle groove, which is divided into a needle feed section, a needle lift section, a needle pressure section, a shoulder section, a yarn bending section, and a back needle section in sequence. An arc angle is provided between the needle lift section and the needle pressure section. The arc angle includes an upper vertex and a lower vertex. The height of the triangle is 25.5mm, and the lower vertex of the arc angle is 18.85-21.35mm from the bottom surface of the triangle. The lower inner wall of the back needle section is 6.35-7.85mm from the bottom surface of the triangle. The width of the needle groove is 3.151-3.153.5mm.

[0010] By adopting the above technical solution, during weaving, the yarns in the pile surface are generally arranged in the form of coils. By selecting a connecting yarn with a larger shrinkage rate to connect the plain surface and the pile surface, during subsequent processing, the connecting yarn shrinks more than the pile surface. When shrinking, the connecting yarn tightens the coils in the pile surface, thereby increasing the height of the coils, thereby increasing the thickness of the pile surface, and thus increasing the overall thickness of the fabric.

[0011] In addition, the distance between the lower vertex of the arc angle in the triangle and the bottom surface of the triangle is generally less than 18 mm. This application increases the distance between the lower vertex and the bottom surface of the triangle so that the upper vertex and the lower vertex of the arc angle are raised, thereby increasing the height of the coils in the suede surface, and further increasing the thickness of the suede surface. At the same time, the height of the needle cylinder in the large circular machine is generally greater than 124 mm. This application increases the height of the coils in the suede surface by lowering the height of the needle cylinder. Combining the above technical solutions, the thickness of the fabric obtained by this application is effectively increased and improved, and no adhesive is used for compounding, which is energy-saving and environmentally friendly. Thicker fabrics can be produced by using large circular machines for weaving.

[0012] In a specific embodiment, the shrinkage rate of the yarn used for the plain surface is 15%, the shrinkage rate of the yarn used for the pile surface is 9.5%, and the shrinkage rate of the connecting yarn connecting the plain surface and the pile surface is 30%.

[0013] By adopting the above technical solution, the shrinkage rates between the plain surface and the connecting yarn, and between the pile surface and the connecting yarn have a large difference, so that the thickness of the pile surface is effectively increased during subsequent processing.

[0014] In a specific embodiment, the density of the plain surface is greater than the density of the napped surface.

[0015] By adopting the above technical solution, when making clothes, the plain surface is on the outside and the suede surface is on the inside. The density of the plain surface is relatively high, which can effectively improve the windproof and warmth-keeping effects of the clothes, and can also appropriately enhance the anti-pilling effect.

[0016] In a specific embodiment, the surface of the yarn used for the pile surface is coated with a polydopamine film, and the yarn is made of the following raw materials in parts by weight: 100-120 parts of polyester chips and 10-12 parts of silane-grafted mica powder.

[0017] By adopting the above technical solution, mica powder has excellent acid and alkali corrosion resistance, elasticity, and toughness. The flaky structure of mica powder itself has a smooth texture and excellent wear resistance. Adding mica powder during yarn preparation can give the yarn wear resistance and reduce the possibility of pilling of fibers in the yarn due to poor wear resistance. In addition, silane is grafted onto the mica powder. During the yarn forming process, the migration of silane in the system can promote the arrangement of mica powder on the surface of the yarn, making the yarn surface smoother and more wear-resistant, which can further reduce the possibility of pilling in the fabric. At the same time, the dosage of silane-grafted mica powder is limited, so that the yarn has both wear resistance and toughness. When too little silane-grafted mica powder is added, it cannot enhance the wear resistance of the yarn. When too much silane-grafted mica powder is added, the toughness of the yarn may be reduced.

[0018] After the yarn is formed, the surface of the yarn is coated with a polydopamine film. First, the dense and smooth structure of the polydopamine film can improve the surface smoothness of the yarn and reduce the pilling phenomenon caused by friction. Secondly, the surface of polydopamine contains rich active groups of phenolic hydroxyl and amino groups. The oxygen atoms of the phenolic hydroxyl groups adopt sp 2 Hybridization provides a pair of lone pairs of electrons to form delocalized bonds with the carbon atoms of the benzene ring. The electron-pushing effect of the hydroxyl group strengthens the polarity of the oxygen-hydrogen bond. This active group in polydopamine can produce intermolecular forces with the groups in silane, so that the polydopamine film can adhere firmly to the yarn surface, thereby reducing the possibility of the polydopamine film falling off from the yarn surface due to friction, so that the yarn surface can maintain long-lasting smoothness.

[0019] Silane-grafted mica powder and yarn surface-coated polydopamine film are used in combination. The polydopamine film is first used to achieve the anti-pilling effect of the yarn. When the polydopamine film falls off the yarn due to wear during the use of the yarn, the mica powder arranged and gathered on the surface of the yarn has an anti-pilling effect. Therefore, the combination of the two can make the yarn have long-lasting anti-pilling performance.

[0020] In a specific embodiment, the polyester chips are modified with macromolecular long-chain silane, and the silane-grafted mica powder is a mica powder grafted with small molecular silane.

[0021] By adopting the above technical solution, both large-molecule long-chain silane and small-molecule silane have a tendency to migrate, and small-molecule silane is easier to migrate than large-molecule long-chain silane. During the yarn forming process, small-molecule silane will prompt mica powder to gather on the surface of the yarn, and the long chain of large-molecule long-chain silane will extend from the inside of the yarn to the surface of the yarn. The long-chain structure of large-molecule long-chain silane not only provides groups that can interact with the active groups in polydopamine, but also promotes a more uniform dispersion of small-molecule silane in the system, so that the mica powder can be evenly arranged on the surface of the yarn, thereby making the structure and performance of the yarn more uniform and stable, and reducing the problem of pilling of the fabric during long-term use.

[0022] In a specific embodiment, the polyester chips are prepared as follows: the polyester chips are mixed with macromolecular long-chain silane in a mass ratio of 100:(2-3), and the mixture is continuously stirred at 60-70°C. After drying, the treated polyester chips are obtained.

[0023] In a specific embodiment, the macromolecular long-chain silane is octadecyltrimethoxysilane or hexadecyltrimethoxysilane.

[0024] By adopting the above technical solution, macromolecular long-chain silane can be grafted onto polyester chips, so that when yarn is subsequently prepared, the macromolecular long-chain silane on the polyester chips can promote a more uniform dispersion of mica powder, and can also interact with the polydopamine film, so that the polydopamine film can be firmly attached to the yarn surface.

[0025] In a specific embodiment, the silane-grafted mica powder is prepared as follows: mica powder is added to an aqueous solution of small molecule silane, heated to 60-70° C., filtered and dried after the reaction to obtain the silane-grafted mica powder.

[0026] In a specific embodiment, the small molecule silane is 3-aminopropyltriethoxysilane.

[0027] By adopting the above technical solution, small molecule silane can be grafted onto mica powder, so that the mica powder can be arranged and aggregated on the surface of the yarn under the migration action of the small molecule silane, thereby enhancing the surface smoothness and wear resistance of the yarn and reducing the pilling phenomenon of the yarn.

[0028] In a specific embodiment, the preparation process of the yarn surface coated with the polydopamine film is as follows: immersing the yarn in a dopamine hydrochloride solution, mixing and reacting at 40-60°C for 2-3 hours, taking out and drying to obtain the yarn surface coated with the polydopamine film.

[0029] By adopting the above technical solution, dopamine is self-polymerized on the yarn surface to form a polydopamine film.

[0030] In a second aspect, the present application provides a method for preparing a different-print fabric, which adopts the following technical solution:

[0031] A method for preparing a different-print fabric comprises selecting yarn with a shrinkage rate of 14-16% as yarn for a plain surface, selecting yarn with a shrinkage rate of 9-10% as yarn for a velvet surface, selecting yarn with a shrinkage rate of 29-31% as yarn connecting the plain surface and the velvet surface, and then weaving the yarns on a large circular knitting machine to obtain the different-print fabric.

[0032] By adopting the above technical solution, a textile fabric with anti-pilling performance can be produced.

[0033] In a third aspect, the present application provides an application of different-print fabrics, using the following technical solutions:

[0034] The application of different-pattern fabrics is used to make clothing.

[0035] In summary, this application has the following beneficial effects:

[0036] 1. By selecting a connecting yarn with a larger shrinkage rate to connect the plain surface and the pile surface, the coils in the pile surface are tightened during the subsequent processing, thereby increasing the thickness of the pile surface. At the same time, by adjusting the height of the arc angle in the triangle and the height of the needle cylinder, the thickness of the fabric is further increased.

[0037] 1. This application first uses silane to graft mica powder to arrange and aggregate the mica powder on the surface of the yarn, and then coats the yarn surface with a polydopamine film, so that the yarn has better anti-pilling performance and the fabric has excellent texture.

[0038] 2. This application uses large molecular long-chain silane to treat polyester chips and uses small molecular silane to graft mica powder, so that the mica powder can be evenly dispersed and arranged on the surface of the yarn, and at the same time, the polydopamine film is firmly attached to the surface of the yarn, so that the yarn has a long-lasting anti-pilling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG1 is a schematic diagram of the structure of a triangle in this application.

[0040] Explanation of the accompanying reference numerals: 1. Triangle; 2. Needle groove; 21. Needle feeding section; 22. Needle lifting section; 23. Needle pressing section; 24. Shoulder section; 25. Yarn bending section; 26. Back needle section; 3. Arc angle; 31. Upper vertex; 32. Lower vertex. DETAILED DESCRIPTION

[0041] The present application is further described in detail below with reference to the embodiments.

[0042] The raw materials in this application can all be obtained commercially.

[0043] Preparation Example 1

[0044] The mica powder was added into a 3% by mass concentration 3-aminopropyltriethoxysilane aqueous solution, heated to 60° C. and reacted for 30 minutes. After the reaction was completed, the solution was filtered and dried to obtain the silane-grafted mica powder.

[0045] Preparation Example 2

[0046] The polyester chips and hexadecyltrimethoxysilane were mixed in a mass ratio of 100:2, mixed at 800 r / min at 60° C. for 15 minutes, and then dried at 80° C. to obtain treated polyester chips.

[0047] Preparation Example 3

[0048] The polyester chips and hexadecyltrimethoxysilane were mixed in a mass ratio of 100:3, mixed at 70° C. and 800 r / min for 15 minutes, and then dried at 80° C. to obtain treated polyester chips.

[0049] Preparation Example 4

[0050] The polyester chips and octadecyltrimethoxysilane were mixed in a mass ratio of 100:2, mixed at 800 r / min at 60° C. for 15 minutes, and then dried at 80° C. to obtain treated polyester chips.

[0051] Example 1

[0052] A fabric with a different pattern includes a plain surface and a velvet surface. The plain surface has a higher density than the velvet surface. The shrinkage of the yarn used for the plain surface is 14%, the shrinkage of the yarn used for the velvet surface is 9%, and the shrinkage of the connecting yarn used to connect the plain and velvet surfaces is 29%. The fabric with a different pattern is woven using a circular knitting machine using the three yarns. The fabric has a width of 150 cm and a grammage of 400 gsm. The yarn used in this embodiment is produced by spinning polyester chips.

[0053] As shown in Figure 1, the cam 1 in the large circular knitting machine has a needle groove 2, which is divided into a needle entry section 21, a needle jacking section 22, a needle pressing section 23, a shoulder section 24, a yarn bending section 25, and a needle return section 26. There is an arc angle 3 between the needle jacking section 22 and the needle pressing section 23. The arc angle 3 includes an upper vertex 31 and a lower vertex 32. The height of the cam 1 is 25.5mm, and the distance between the lower vertex 32 of the arc angle 3 and the bottom surface of the cam 1 is 18.85mm. The distance between the lower inner wall of the needle return section 26 and the bottom surface of the cam 1 is 6.35mm. The width of the needle groove 2 is 3.151mm. The height of the needle cylinder in the large circular knitting machine is 124mm.

[0054] Example 2

[0055] A fabric with a different pattern includes a plain surface and a velvet surface. The plain surface has a higher density than the velvet surface. The yarn used for the plain surface has a shrinkage of 15%, the yarn used for the velvet surface has a shrinkage of 9.5%, and the connecting yarn used to connect the plain and velvet surfaces has a shrinkage of 30%. The fabric is woven using a circular knitting machine using the three yarns described above. The fabric has a width of 150 cm and a grammage of 400 gsm. The yarn used in this embodiment is produced by spinning polyester chips.

[0056] As shown in Figure 1, the cam 1 in the large circular knitting machine has a needle groove 2, which is divided into the needle groove 2, which is sequentially divided into the needle entry section, the needle jacking section 22, the needle pressing section 23, the shoulder section 24, the yarn bending section 25, and the needle return section 26. There is an arc angle 3 between the needle jacking section 22 and the needle pressing section 23. The arc angle 3 includes an upper vertex 31 and a lower vertex 32. The height of the cam 1 is 25.5mm, and the distance between the lower vertex 32 of the arc angle 3 and the bottom surface of the cam 1 is 21.35mm. The distance between the lower inner wall of the needle return section 26 and the bottom surface of the cam 1 is 6.35mm. The width of the needle groove 2 is 3.153mm. The height of the needle cylinder in the large circular knitting machine is 124mm.

[0057] Example 3

[0058] A fabric with a different pattern includes a plain surface and a velvet surface. The plain surface has a higher density than the velvet surface. The shrinkage of the yarn used for the plain surface is 16%, the shrinkage of the yarn used for the velvet surface is 10%, and the shrinkage of the connecting yarn used to connect the plain and velvet surfaces is 31%. The fabric with a different pattern is woven using a circular knitting machine and the three yarns. The fabric has a width of 150 cm and a grammage of 400 gsm. The yarn used in this embodiment is produced by spinning polyester chips.

[0059] As shown in Figure 1, the cam 1 in the large circular knitting machine has a needle groove 2, which is divided into the needle groove 2, which is sequentially divided into the needle entry section, the needle jacking section 22, the needle pressing section 23, the shoulder section 24, the yarn bending section 25, and the needle return section 26. There is an arc angle 3 between the needle jacking section 22 and the needle pressing section 23. The arc angle 3 includes an upper vertex 31 and a lower vertex 32. The height of the cam 1 is 25.5mm, and the distance between the lower vertex 32 of the arc angle 3 and the bottom surface of the cam 1 is 20.35mm. The distance between the lower inner wall of the needle return section 26 and the bottom surface of the cam 1 is 7.85mm. The width of the needle groove 2 is 3.153mm. The height of the needle cylinder in the large circular knitting machine is 124mm.

[0060] Example 4

[0061] The difference between this embodiment and embodiment 2 is that:

[0062] The yarn used for the pile surface is prepared by the following method:

[0063] S1. Accurately weigh 1000 g of polyester chips and 100 g of the silane-grafted mica powder prepared in Preparation Example 1, mix them well, and put them into a screw extruder for extrusion and granulation. Then, place the granules in a spinning device, control the spinning temperature to 280° C., and perform a traction and stretching treatment at a traction and stretching ratio of 3.4 to collect the spun fibers. The spun fibers are allowed to cool to room temperature and then spun to obtain yarn.

[0064] S2. Immerse the yarn in a dopamine hydrochloride solution, which is prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of a 0.01 mol / L Tris buffer solution adjusted to pH 8.5. React at 40°C for 2 h, take out the yarn, and dry it to obtain the yarn used for the suede surface.

[0065] Example 5

[0066] The difference between this embodiment and embodiment 2 is that:

[0067] The yarn used for the pile surface is prepared by the following method:

[0068] S1. Accurately weigh 1100 g of polyester chips and 110 g of the silane-grafted mica powder prepared in Preparation Example 1, mix them well, and put them into a screw extruder for extrusion and granulation. Then, place the granules in a spinning device, control the spinning temperature to 280° C., and perform a traction and stretching treatment at a traction and stretching ratio of 3.4 to collect the spun fibers. The spun fibers are allowed to cool to room temperature and then spun to obtain yarn.

[0069] S2. Immerse the yarn in a dopamine hydrochloride solution, which is prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of a 0.01 mol / L Tris buffer solution adjusted to pH 8.5. React at 40°C for 2 h, take out the yarn, and dry it to obtain the yarn used for the suede surface.

[0070] Example 6

[0071] The difference between this embodiment and embodiment 2 is that:

[0072] The yarn used for the pile surface is prepared by the following method:

[0073] S1. Accurately weigh 1200 g of polyester chips and 120 g of the silane-grafted mica powder prepared in Preparation Example 1, mix them well, and put them into a screw extruder for extrusion and granulation. Then, place the granules in a spinning device, control the spinning temperature to 280° C., and perform a traction and stretching treatment at a traction and stretching ratio of 3.4 to collect the spun fibers. The spun fibers are allowed to cool to room temperature and then spun to obtain yarn.

[0074] S2. Immerse the yarn in a dopamine hydrochloride solution, which is prepared by dissolving 0.2g dopamine hydrochloride in 100ml of a 0.01mol / L Tris buffer solution adjusted to pH 8.5. React at 40°C for 2h, take out the yarn, and dry it to obtain the yarn used for the suede.

[0075] Example 7

[0076] The difference between this embodiment and embodiment 2 is that:

[0077] The yarn used for the pile surface is prepared by the following method:

[0078] S1. Accurately weigh 1000 g of polyester chips and 100 g of the silane-grafted mica powder prepared in Preparation Example 1, mix them well, and put them into a screw extruder for extrusion and granulation. Then, place the granules in a spinning device, control the spinning temperature to 280° C., and perform a traction and stretching treatment at a traction and stretching ratio of 3.4 to collect the spun fibers. The spun fibers are allowed to cool to room temperature and then spun to obtain yarn.

[0079] S2. Immerse the yarn in a dopamine hydrochloride solution, which is prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of a 0.01 mol / L Tris buffer solution adjusted to pH 8.5. React at 60°C for 3 hours, take out the yarn, and dry it to obtain the yarn used for the suede surface.

[0080] Example 8

[0081] The difference between this embodiment and embodiment 2 is that:

[0082] The yarn used for the pile surface is prepared by the following method:

[0083] S1. Accurately weigh 1000 g of the polyester chips in Preparation Example 2 and 100 g of the silane-grafted mica powder in Preparation Example 1, mix them well, and put them into a screw extruder for extrusion and granulation. Then, place the granules in a spinning device, control the spinning temperature to 280° C., and perform a traction and stretching treatment at a traction and stretching ratio of 3.4 to collect the spun fibers. The spun fibers are allowed to cool to room temperature and then spun to obtain yarn.

[0084] S2. Immerse the yarn in a dopamine hydrochloride solution, which is prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of a 0.01 mol / L Tris buffer solution adjusted to pH 8.5. React at 40°C for 2 h, take out the yarn, and dry it to obtain the yarn used for the suede surface.

[0085] Example 9

[0086] The difference between this embodiment and embodiment 2 is that:

[0087] The yarn used for the pile surface is prepared by the following method:

[0088] S1. Accurately weigh 1000 g of the polyester chips in Preparation Example 3 and 100 g of the silane-grafted mica powder in Preparation Example 1, mix them well, and put them into a screw extruder for extrusion and granulation. Then, place the granules in a spinning device, control the spinning temperature to 280° C., and perform a traction and stretching treatment at a traction and stretching ratio of 3.4 to collect the spun fibers. The spun fibers are allowed to cool to room temperature and then spun to obtain yarn.

[0089] S2. Immerse the yarn in a dopamine hydrochloride solution prepared by dissolving 0.2 g dopamine hydrochloride in 100 ml of a 0.01 mol / L Tris buffer solution adjusted to pH 8.5. React at 40° C. for 2 h, remove the yarn, and air-dry it to obtain the yarn used for the suede surface.

[0090] Example 10

[0091] The difference between this embodiment and embodiment 2 is that:

[0092] The yarn used for the pile surface is prepared by the following method:

[0093] S1. Accurately weigh 1000 g of the polyester chips prepared in Preparation Example 4 and 100 g of the silane-grafted mica powder prepared in Preparation Example 1, mix them well, and put them into a screw extruder for extrusion and granulation. Then, place the granules in a spinning device, control the spinning temperature to 280° C., and perform a traction and stretching treatment at a traction and stretching ratio of 3.4 to collect the spun fibers. The spun fibers are allowed to cool to room temperature and then spun to obtain yarn.

[0094] S2. Immerse the yarn in a dopamine hydrochloride solution, which is prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of a 0.01 mol / L Tris buffer solution adjusted to pH 8.5. React at 40°C for 2 h, take out the yarn, and dry it to obtain the yarn used for the suede surface.

[0095] Comparative Example 1

[0096] A fabric with a different pattern comprises a plain weave and a velvet side. The plain weave has a greater density than the velvet side. The yarn used for the plain weave has a shrinkage of 15%, the yarn used for the velvet side has a shrinkage of 9.5%, and the connecting yarn used to connect the plain and velvet sides has a shrinkage of 5%. The fabric is woven using a circular knitting machine using the three yarns described above. The fabric has a width of 150 cm and a grammage of 400 gsm. The yarn used in this comparative example is produced by spinning polyester chips.

[0097] As shown in Figure 1, the cam 1 in the circular knitting machine has a needle groove 2, which is divided into a needle entry section, a needle jacking section 22, a needle pressing section 23, a shoulder section 24, a yarn bending section 25, and a return section 26. There is an arc angle 3 between the needle jacking section 22 and the needle pressing section 23. The arc angle 3 includes an upper vertex 31 and a lower vertex 32. The height of the cam 1 is 25.5 mm, and the distance between the lower vertex 32 of the arc angle 3 and the bottom surface of the cam 1 is 21.35 mm. The distance between the lower inner wall of the return section 26 and the bottom surface of the cam 1 is 6.35 mm. The width of the needle groove 2 is 3.153 mm. The needle cylinder height in the circular knitting machine is 124 mm.

[0098] Comparative Example 2

[0099] A fabric with a different pattern comprises a plain weave and a velvet side. The plain weave has a greater density than the velvet side. The yarn used for the plain weave has a shrinkage of 15%, the yarn used for the velvet side has a shrinkage of 9.5%, and the connecting yarn used to connect the plain and velvet sides has a shrinkage of 30%. The fabric is woven using a circular knitting machine and the three yarns described above. The fabric has a width of 150 cm and a grammage of 400 gsm. The yarn used in this comparative example is produced by spinning polyester chips.

[0100] As shown in Figure 1, the cam 1 in the large circular knitting machine has a needle groove 2, which is divided into the needle groove 2, which is sequentially divided into the needle entry section, the needle jacking section 22, the needle pressing section 23, the shoulder section 24, the yarn bending section 25, and the needle return section 26. There is an arc angle 3 between the needle jacking section 22 and the needle pressing section 23. The arc angle 3 includes an upper vertex 31 and a lower vertex 32. The height of the cam 1 is 25.5mm, and the distance between the lower vertex 32 of the arc angle 3 and the bottom surface of the cam 1 is 16.5mm. The distance between the lower inner wall of the needle return section 26 and the bottom surface of the cam 1 is 6.35mm. The width of the needle groove 2 is 3.153mm. The height of the needle cylinder in the large circular knitting machine is 124mm.

[0101] Comparative Example 3

[0102] A fabric with a different pattern comprises a plain weave and a velvet side. The plain weave has a greater density than the velvet side. The yarn used for the plain weave has a shrinkage of 15%, the yarn used for the velvet side has a shrinkage of 9.5%, and the connecting yarn used to connect the plain and velvet sides has a shrinkage of 30%. The fabric is woven using a circular knitting machine and the three yarns described above. The fabric has a width of 150 cm and a grammage of 400 gsm. The yarn used in this comparative example is produced by spinning polyester chips.

[0103] As shown in Figure 1, the cam 1 in the large circular knitting machine has a needle groove 2, which is divided into the needle groove 2, which is divided into the needle entry section, the needle jacking section 22, the needle pressing section 23, the shoulder section 24, the yarn bending section 25, and the needle return section 26. There is an arc angle 3 between the needle jacking section 22 and the needle pressing section 23. The arc angle 3 includes an upper vertex 31 and a lower vertex 32. The height of the cam 1 is 25.5mm, and the distance between the lower vertex 32 of the arc angle 3 and the bottom surface of the cam 1 is 21.35mm. The distance between the lower inner wall of the needle return section 26 and the bottom surface of the cam 1 is 6.35mm. The width of the needle groove 2 is 3.153mm. The height of the needle cylinder in the large circular knitting machine is 125mm.

[0104] Comparative Example 4

[0105] The difference between this comparative example and Example 4 is:

[0106] The yarn used for the pile surface is prepared by the following method:

[0107] S1. Accurately weigh 1000 g of polyester chips and 100 g of mica powder, mix them well, and put them into a screw extruder for extrusion and granulation. Then, place the granules in a spinning device, control the spinning temperature to 280° C., and perform a traction and stretching treatment at a traction and stretching ratio of 3.4 to collect the spun fibers. The spun fibers are allowed to cool to room temperature and then spun to obtain yarn.

[0108] S2. Immerse the yarn in a dopamine hydrochloride solution, which is prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of a 0.01 mol / L Tris buffer solution adjusted to pH 8.5. React at 40°C for 2 h, take out the yarn, and dry it to obtain the yarn used for the suede surface.

[0109] Comparative Example 5

[0110] The difference between this comparative example and Example 4 is:

[0111] The yarn used for the pile surface is prepared by the following method:

[0112] S1. Accurately weigh 1000 g of polyester chips and 100 g of the silane-grafted mica powder prepared in Preparation Example 1, mix them well, and put them into a screw extruder for extrusion to form pellets. The pellets are then placed in a spinning device, the spinning temperature is controlled to be 280° C., and the fibers are collected by traction and stretching at a traction and stretching ratio of 3.4. The spun fibers are allowed to cool to room temperature and then spun to obtain yarn for the suede surface.

[0113] Comparative Example 6

[0114] The difference between this comparative example and Example 8 is that:

[0115] Silane grafted mica powder was prepared by the following method:

[0116] The mica powder was added into a 3% by mass concentration hexadecyltrimethoxysilane aqueous solution, heated to 60° C. and reacted for 30 minutes. After the reaction was completed, the solution was filtered and dried to obtain the silane-grafted mica powder.

[0117] Comparative Example 7

[0118] The difference between this comparative example and Example 8 is that:

[0119] Polyester chips are processed in the following ways:

[0120] The polyester chips and 3-aminopropyltriethoxysilane were mixed in a mass ratio of 100:2, mixed at 800 r / min at 70° C. for 15 minutes, and then dried at 80° C. to obtain treated polyester chips.

[0121] Performance testing

[0122] 1. Heat the fabrics prepared in Examples 1 to 3 and Comparative Examples 1 to 3 in a water bath at 95° C. for 30 minutes. After drying, lay the fabrics flat, measure the thickness of the fabrics, and record the thickness.

[0123] Table 1 Fabric thickness measurement results

[0124] Referring to Table 1, the fabrics of Examples 1-3 are thicker than those of Comparative Example 1, indicating that by selecting a high-shrinkage yarn to connect the plain and pile surfaces, the loops in the pile surface can be tightened, increasing the height of the loops. Furthermore, in conjunction with Comparative Examples 2 and 3, the fabric of Example 1 is thicker, indicating that by increasing the vertex position of the arc angle in the triangle and appropriately lowering the needle cylinder height, the loop height of the pile surface can be increased, thereby increasing the final fabric thickness.

[0125] 2. Pilling tests were conducted on the napped surface of the fabrics in accordance with GB / T4802.2 "Determination of Fabric Propensity to Fuzzing and Pilling - Part 2: Modified Martindale Method." Three samples were taken from each Example and Comparative Example. The samples were rotated 2000 revolutions on a YG401G Fabric Surface Grinding Machine, then rated against a standard sample in a YG982D Pilling Rating Box. The average of the three results was taken. The samples were then rotated another 3000 revolutions on the YG401G Fabric Surface Grinding Machine, then rated against a standard sample in a YG982D Pilling Rating Box. The average of the three results was taken.

[0126] Table 2 Pilling test results of fabrics in each embodiment and each comparative example

[0127] Referring to Table 1, compared with Comparative Example 4, the fabrics in Examples 4 to 6 have better anti-pilling and fuzzing properties, indicating that the use of silane-grafted mica powder can promote the aggregation of mica powder on the surface of the yarn, thereby increasing the smoothness of the yarn and improving the wear resistance of the yarn, which in turn manifests as the fabric having better anti-pilling and fuzzing properties.

[0128] Compared with Comparative Example 5, the fabrics in Examples 1 and 7 exhibited superior anti-pilling performance, indicating that the polydopamine film coated on the yarn surface, with its smooth and dense structure, imparts superior smoothness and wear resistance to the yarn, reducing pilling caused by friction. Even after 5,000 revolutions of friction, the fabrics in Examples 1 and 7 still exhibited excellent anti-pilling and anti-fuzzing properties. Analysis suggests that excessive friction may remove the polydopamine film coating the yarn surface, at which point the mica powder arranged on the yarn surface plays a primary role in anti-pilling and fuzzing, resulting in the yarn exhibiting excellent anti-pilling and anti-fuzzing properties.

[0129] In combination with Example 1, Example 8 to Example 10, the polyester chips are pre-treated with macromolecular long-chain silane. With the help of the active groups provided by the macromolecular long-chain silane, an interaction force can be generated with the polydopamine film, so that the polydopamine film can be firmly attached to the surface of the yarn, thereby improving the durability of the anti-pilling performance of the yarn. At the same time, it can also promote the uniformity of the dispersion of small molecule silane in the system, thereby promoting the more uniform dispersion of mica powder on the surface of the yarn, so that the anti-pilling performance of the yarn is further improved.

[0130] Combining Example 8 and Comparative Example 6, the anti-pilling effect of the yarn in Example 8 is better. Analysis shows that after the polyester chips and mica powder are both treated with macromolecular long-chain silane, the long silane chains on the polyester chips and the long silane chains on the mica powder may be entangled in the entire system, thereby affecting the movement of the mica powder in the system and hindering the aggregation of the mica powder on the surface of the yarn, resulting in the anti-pilling performance of the yarn in Comparative Example 6 being weaker than that in Example 8.

[0131] Combining Example 8 and Comparative Example 7, the anti-pilling effect of the yarn in Comparative Example 7 is poor. Analysis shows that after the polyester chips and mica powder are treated with small molecule silanes, during the yarn forming process, the mica powder is aggregated to the surface of the yarn under the migration of the small molecule silane. The small molecule silane on the polyester chips cannot extend to the surface of the yarn due to its short chain length, so that the polydopamine film can only interact with the small molecule silane on the mica powder. Therefore, compared with the polydopamine film on the yarn in Example 8, which can simultaneously interact with the large molecular long-chain silane and the small molecule silane, the firmness of the polydopamine film on the yarn in Comparative Example 7 will be relatively low, so the anti-pilling effect of the yarn in Comparative Example 7 is poorer than that in Example 8.

[0132] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A different version of fabric, Features: It comprises a plain surface and a velvet surface, wherein the shrinkage rate of the yarn used for the plain surface is 14-16%, the shrinkage rate of the yarn used for the velvet surface is 9-10%; and the shrinkage rate of the connecting yarn connecting the plain surface and the velvet surface is 29-31%; The fabric with different patterns is produced by a large circular knitting machine. The height of the needle cylinder in the large circular knitting machine is 124 mm. A needle groove (2) is provided in the triangle (1) of the large circular knitting machine. The needle groove (2) is divided into a needle entry section (21), a needle thrust section (22), a needle pressing section (23), a shoulder section (24), a yarn bending section (25), and a needle return section (26). An arc angle (3) is provided between the needle thrust section (22) and the needle pressing section (23). The arc angle (3) includes an upper vertex (31) and a lower vertex (32). The height of the triangle (1) is 25.5 mm. The distance between the lower vertex (32) of the arc angle (3) and the bottom surface of the triangle (1) is 18.85-21.35 mm. The distance between the lower inner wall of the needle return section (26) and the bottom surface of the triangle (1) is 6.35-7.85 mm. The width of the needle groove (2) is 3.151-3.153.5 mm.

2. The different-edition fabric according to claim 1, Features: The shrinkage rate of the yarn used for the plain surface is 15%, the shrinkage rate of the yarn used for the velvet surface is 9.5%; and the shrinkage rate of the connecting yarn connecting the plain surface and the velvet surface is 30%.

3. The different-edition fabric according to claim 1, Features: The density of the plain surface is greater than the density of the napped surface.

4. The different-edition fabric according to claim 1, Features: The surface of the yarn used for the suede surface is coated with a polydopamine film, and the yarn is made of the following raw materials in parts by weight: 100-120 parts of polyester chips and 10-12 parts of silane-grafted mica powder.

5. The different-print fabric according to claim 4, Features: The polyester chips are modified by macromolecular long-chain silane, and the silane-grafted mica powder is obtained by grafting small molecular silane onto mica powder.

6. The different-print fabric according to claim 5, Features: The polyester chips are prepared as follows: the polyester chips are mixed with macromolecular long-chain silane in a mass ratio of 100:(2-3), and the mixture is continuously stirred at 60-70° C., and then dried to obtain the treated polyester chips.

7. The different-print fabric according to claim 6, Features: The macromolecular long-chain silane is octadecyltrimethoxysilane or hexadecyltrimethoxysilane.

8. The different-print fabric according to claim 5, Features: The silane-grafted mica powder is prepared as follows: the mica powder is put into an aqueous solution of small molecular silane, heated to 60-70° C., filtered and dried after the reaction, to obtain the silane-grafted mica powder.

9. The different-print fabric according to claim 1, Features: The preparation process of the yarn surface coated with the polydopamine film is as follows: immersing the yarn in a dopamine hydrochloride solution, mixing and reacting at 40-60° C. for 2-3 hours, taking out and drying, and obtaining the yarn surface coated with the polydopamine film.

10. A method for preparing the different-print fabric according to any one of claims 1 to 9, Features: The yarn with a shrinkage rate of 14-16% is selected as the yarn for the plain surface, the yarn with a shrinkage rate of 9-10% is selected as the yarn for the suede surface, and the yarn with a shrinkage rate of 29-31% is selected as the yarn connecting the plain surface and the suede surface, and then the yarn is woven using a large circular machine to obtain different-edition fabrics.

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