Variant form cloth and manufacturing method thereof

Abstract

To provide a method for manufacturing cloth having an increased thickness by an energy saving and eco-friendly manufacturing process.SOLUTION: Variant form cloth and a manufacturing method thereof are disclosed. The variant form cloth includes a plain woven surface and a raised surface. Shrinkage percentage of yarn used for the plain woven surface is 14 to 16%. Shrinkage percentage of yarn used for the raised surface is 9 to 10%. Shrinkage percentage of binding yarn for connecting the plain woven surface and the raised surface is 29 to 31%. The variant form cloth is manufactured by a circular knitting machine. A height of a cylinder of the circular knitting machine is 124 mm. A needle feeding groove 2 is formed on a cam 1. The needle feeding groove consists of a needle inserting part 21, a needle pushing up part 22, a needle pushing down part 23, a joggling part 24, a yarn feeding part 25, and a needle return part 26 in order. There is an arc angle 3 between the needle pushing up part and the needle pushing down part. A distance from a lower apex of the arc angle to a cam bottom surface is 18.85 to 21.35 mm. A distance from a lower inner wall of the needle return part to the cam bottom surface is 6.35 to 7.85 mm. A width of the needle feeding groove is 3.151 to 3.153 mm.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] This application relates to the field of fabrics, and more specifically to modified fabrics and methods for making same. [Background technology]

[0002] Brushed fabrics are fabrics that have a fuzzy layer or soft appearance on the surface of the fabric due to the brushed finish. Brushing a fabric can improve the style and appearance of the fabric, increase the fuzzy texture and heat retention of the fabric surface, make the fabric fluffy and thick, and soft to the touch, thereby increasing the added value of the fabric.

[0003] At present, in order to increase the thickness of brushed fabric, it is common to combine a single layer of brushed fabric with another single layer of plain weave fabric, or to use a circular knitting machine to spin and weave a plain weave surface and a brushed surface together. The former combining method requires the use of an adhesive during the combining process, which contains more or less harmful substances. The adhesive used may have a certain effect on the human body during the production and processing of the fabric, and even during the subsequent use of the fabric. The latter spinning method only results in the thickness of the fabric obtained by adding the brushed surface to the plain weave surface, which is insufficient to meet the requirements of enterprises for increasing the thickness of the fabric.

[0004] Therefore, how to solve the above problem is very necessary. Summary of the Invention [Problem to be solved by the invention]

[0005] In order to increase the thickness of the fabric, the present application provides a profiled fabric and a method for producing the same. [Means for solving the problem]

[0006] In a first aspect, the present application provides a special-shaped fabric, which adopts the following technical solutions: A pilling-resistant irregular fabric, comprising a plain weave surface and a raised surface, the shrinkage percentage of a yarn used for the plain weave surface is 14 to 16%, the shrinkage percentage of a yarn used for the raised surface is 9 to 10%, and the shrinkage percentage of a binding yarn connecting the plain weave surface and the raised surface is 29 to 31%, The height of the needle hook in the circular knitting machine for producing irregular fabrics is 124 mm, a needle carrying groove is provided in the cam of the circular knitting machine, the needle carrying groove is divided into a needle insertion section, a needle push-up section, a needle pull-down section, a step section, a yarn supply section, and a needle return section, in that order, an arc-shaped angle is provided between the needle push-up section and the needle pull-down section, the arc-shaped angle includes an upper apex and a lower apex, the height of the cam is 25.5 mm, the distance from the lower apex of the arc-shaped angle to the bottom surface of the cam is 18.85 to 21.35 mm, the distance from the lower inner wall of the needle return section to the bottom surface of the cam is 6.35 to 7.85 mm, and the width of the needle carrying groove is 3.151 to 3.153 mm.

[0007] By adopting the above technical solution, during weaving, the yarns in the raised surface are generally arranged in the form of loops, and a binding yarn with a larger shrinkage rate is selected to connect the plain weave surface and the raised surface, so that during subsequent processing, the binding yarn will shrink more than the raised surface, and when the binding yarn shrinks, it will tightly pull the loops in the raised surface, increasing the height of the loops, thereby increasing the thickness of the raised surface and further increasing the overall thickness of the fabric.

[0008] In addition, the distance from the lower apex of the arc-shaped angle of the cam to the bottom surface of the cam is generally less than 18 mm, and the present application increases the distance from the lower apex to the bottom surface of the cam to raise the upper and lower apex of the arc-shaped angle, thereby increasing the height of the loops in the raised surface and further increasing the thickness of the raised surface. In addition, the height of the needle hook in the circular knitting machine is generally greater than 124 mm, and the present application adjusts the height of the needle hook lower to increase the height of the loops in the raised surface. In summary, the thickness of the fabric obtained in the present application is effectively increased and improved, and it is energy-saving and environmentally friendly without using adhesives for compounding, and a thick fabric can be obtained by spinning and weaving with a circular knitting machine.

[0009] In one specific possible embodiment, the shrinkage rate of the yarn used for the plain weave surface is 15%, the shrinkage rate of the yarn used for the raised surface is 9.5%, and the shrinkage rate of the binding yarn connecting the plain weave surface and the raised surface is 30%.

[0010] By adopting the above technical solutions, there is a large difference in shrinkage rate between the plain weave surface and the binding yarn, and between the raised surface and the connecting yarn, so that the thickness of the raised surface is effectively increased during subsequent processing.

[0011] In one particular embodiment, the density of the plain weave surface is greater than the density of the raised surface.

[0012] By adopting the above technical solution, when making clothing, the plain weave surface is on the outside and the brushed surface is on the inside, and since the density of the plain weave surface is high, the windproof and heat-retaining effects of the clothing can be effectively improved, and the pilling resistance effect can be appropriately enhanced.

[0013] In one specific possible embodiment, the surface of the yarn used for the raised surface is coated with a polydopamine film, and the yarn is made of, by weight, 100 to 120 parts of polyester chips and 10 to 12 parts of silane-grafted mica powder.

[0014] By adopting the above technical solution, the mica powder has excellent acid and alkali resistance, elasticity and toughness, and the sheet-like structure of the mica powder itself has a smooth texture and excellent wear resistance. When the mica powder is added during the production of yarn, it can impart wear resistance to the yarn and reduce the possibility of pilling due to low wear resistance of the fibers in the yarn. In addition, when the mica powder is grafted with silane, the transition action of the silane system during the yarn formation process can arrange the mica powder on the surface layer of the yarn, making the surface of the yarn smoother and more wear-resistant, thereby further reducing the possibility of pilling on the fabric. In addition, by limiting the amount of silane grafted mica powder, the yarn has both wear resistance and toughness. If the amount of silane grafted mica powder added is too small, it cannot achieve the effect of improving the wear resistance of the yarn, and if the amount added is too large, the toughness of the yarn may be reduced.

[0015] After the yarn is formed, the surface of the yarn is further coated with a polydopamine film. Firstly, the dense and smooth structure of the polydopamine film can enhance the smoothness of the yarn surface and reduce the occurrence of pilling caused by the friction of the yarn. Secondly, the surface of the polydopamine contains abundant active groups, phenolic hydroxyl groups and amino groups, and the oxygen atom of the phenolic hydroxyl group is sp 2 By using hybridization, a pair of lone electron pairs are provided to form a delocalized bond with the carbon atom of the benzene ring, and the electron-donating effect of the hydroxyl group strengthens the polarity of the oxygen-hydrogen bond, and such active groups in polydopamine can generate intermolecular forces with the groups in the silane, allowing the polydopamine film to adhere firmly to the surface of the yarn, thereby reducing the possibility that the polydopamine film will fall off from the surface of the yarn due to friction, and allowing the surface of the yarn to maintain sustained smoothness.

[0016] When silane-grafted mica powder is used in combination with a polydopamine film coating on the surface of a yarn, the polydopamine film first provides the yarn with an anti-pilling effect. When the polydopamine film falls off the yarn due to wear during use of the yarn, the mica powder aligned and aggregated on the surface of the yarn provides an anti-pilling effect. Thus, the combination of the two can provide the yarn with sustained anti-pilling performance.

[0017] In one specific embodiment, the polyester chips are modified with a polymeric long-chain silane, and the silane-grafted mica powder is a graft of a low molecular weight silane and mica powder.

[0018] By adopting the above technical solution, both the high molecular weight long-chain silane and the low molecular weight silane have a tendency to transition, and the low molecular weight silane is more likely to transition than the high molecular weight long-chain silane. During the yarn forming process, the low molecular weight silane promotes the aggregation of mica powder on the surface of the yarn, and the long chain of the high molecular weight long-chain silane extends from the inside of the yarn to the surface of the yarn. The long chain structure of the high molecular weight long-chain silane not only provides a group that can generate an interaction force with the active group in polydopamine, but also makes the low molecular weight silane more uniformly distributed in the system, and allows the mica powder to be uniformly arranged on the surface of the yarn, so that the structure and performance of the yarn are more uniform and stable, and the occurrence of pilling problems during long-term use of the fabric is reduced.

[0019] In one specific embodiment, the polyester chips are produced by mixing polyester chips and polymeric long-chain silane in a mass ratio of 100:(2-3), continuously stirring and mixing at 60-70°C, and drying to obtain treated polyester chips.

[0020] In one particular embodiment, the polymeric long chain silane is octadecyltrimethoxysilane or hexadecyltrimethoxysilane.

[0021] By adopting the above technical solution, the polymeric long-chain silane can be grafted onto the polyester chips, so that during the subsequent production of yarn, the polymeric long-chain silane on the polyester chips can make the mica powder more uniformly dispersed, and can also generate an interaction with the polydopamine film, allowing the polydopamine film to be firmly attached to the surface of the yarn.

[0022] In one specific possible embodiment, the silane-grafted mica powder is produced by adding mica powder to an aqueous solution of low molecular weight silane, heating the mixture to 60-70°C, reacting the mixture, filtering the mixture, and drying the mixture to obtain the silane-grafted mica powder.

[0023] In one particular embodiment, the low molecular weight silane is 3-aminopropyltriethoxysilane.

[0024] By adopting the above technical solution, low molecular weight silane can be grafted onto mica powder, and the mica powder can be arranged and aggregated on the surface of the yarn through the transition action of low molecular weight silane, thereby improving the smoothness and abrasion resistance of the yarn surface and reducing the occurrence of the phenomenon of fuzzing and pilling of the yarn.

[0025] In one specific possible embodiment, the manufacturing process for coating the surface of the yarn with a polydopamine membrane is to immerse the yarn in a dopamine hydrochloride solution, mix and react at 40-60°C for 2-3 hours, remove and dry it to obtain a yarn coated with a polydopamine membrane on its surface.

[0026] By adopting the above technical solution, dopamine is self-polymerized on the surface of the thread to form a polydopamine membrane.

[0027] In a second aspect, the present application provides a method for producing a special-shaped fabric, which adopts the following technical solutions: The method for producing the irregular fabric involves selecting yarn with a shrinkage rate of 14 to 16% as yarn for the plain weave surface, selecting yarn with a shrinkage rate of 9 to 10% as yarn for the raised surface, and selecting yarn with a shrinkage rate of 29 to 31% as yarn connecting the plain weave surface and the raised surface, and then spinning and weaving the yarns using a circular knitting machine to produce the irregular fabric.

[0028] By adopting the above technical solutions, fiber fabrics with anti-pilling properties can be produced.

[0029] In a third aspect, the present application provides an application of a special-shaped fabric, and adopts the following technical solutions: The application of the irregular fabric is applied to the production of clothing. Effect of the Invention

[0030] In summary, the present application has the following beneficial effects: 1. By selecting a binding yarn with a larger shrinkage rate to connect the plain woven surface and the raised surface, the loops in the raised surface can be pulled in the subsequent processing, thereby increasing the thickness of the raised surface; and by adjusting the height of the arc angle of the cam and the height of the needle hook, the thickness of the fabric can be further increased.

[0031] 2. In this application, first, silane grout mica powder is used to arrange and aggregate mica powder on the surface of the yarn, and then the surface of the yarn is coated with polydopamine film, thereby providing the yarn with excellent anti-fuzzing and anti-pilling performance and the fabric with excellent texture in use.

[0032] 3. This application uses high molecular weight long-chain silane to treat polyester chips, and uses low molecular weight silane to graft mica powder, which is uniformly dispersed and aligned on the surface of the yarn, and the polydopamine film is firmly attached to the surface of the yarn, thereby providing the yarn with a sustained anti-fuzzing and anti-pilling effect. [Brief description of the drawings]

[0033] [Figure 1] FIG. 2 is a structural schematic diagram of a cam in the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0034] The present invention will now be described in more detail with reference to the following examples.

[0035] All raw materials in this application are commercially available.

[0036] (Production Example 1) The mica powder was added to an aqueous solution of 3-aminopropyltriethoxysilane with a mass concentration of 3%, heated to 60°C, and reacted for 30 minutes. After the reaction was completed, the mixture was filtered and dried to obtain silane-grafted mica powder.

[0037] (Production Example 2) The polyester chips and hexadecyltrimethoxysilane were uniformly mixed in a mass ratio of 100:2, mixed at 60° C. and 800 r / min for 15 minutes, and then dried at 80° C. to obtain treated polyester chips.

[0038] (Production Example 3) The polyester chips and hexadecyltrimethoxysilane were uniformly 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.

[0039] (Production Example 4) The polyester chips and octadecyltrimethoxysilane were uniformly mixed in a mass ratio of 100:2, mixed at 60° C. and 800 r / min for 15 minutes, and then dried at 80° C. to obtain treated polyester chips.

[0040] Example 1 The irregular fabric includes a plain weave surface and a raised surface, the density of the plain weave surface is greater than that of the raised surface, the shrinkage rate of the yarn used for the plain weave surface is 14%, the shrinkage rate of the yarn used for the raised surface is 9%, and the shrinkage rate of the binding yarn for connecting the plain weave surface and the raised surface is 29%. The irregular fabric was woven using a circular knitting machine and the above three types of yarn, and the width of the fabric was 150 cm and the weight was 400 GSM. The yarn used in this example was obtained by spinning and spinning polyester chips.

[0041] Here, as shown in Fig. 1, a needle carrying groove 2 is opened in a cam 1 of a circular knitting machine, and the needle carrying groove 2 is divided into a needle insertion section 21, a needle push-up section 22, a needle pull-down section 23, a step section 24, a yarn supply section 25, and a needle return section 26, and an arc-shaped corner 3 is provided between the needle push-up section 22 and the needle pull-down section 23, and the arc-shaped corner 3 includes an upper apex 31 and a lower apex 32, the height of the cam 1 is 25.5 mm, the distance from the lower apex 32 of the arc-shaped corner 3 to the bottom surface of the cam 1 is 18.85 mm, the distance from the lower inner wall of the needle return section 26 to the bottom surface of the cam 1 is 6.35 mm, and the width of the needle carrying groove 2 is 3.151 mm. The height of the needle hook in the circular knitting machine was 124 mm.

[0042] Example 2 The irregular fabric includes a plain weave surface and a raised surface, the density of the plain weave surface is greater than that of the raised surface, the shrinkage rate of the yarn used for the plain weave surface is 15%, the shrinkage rate of the yarn used for the raised surface is 9.5%, and the shrinkage rate of the binding yarn for connecting the plain weave surface and the raised surface is 30%. The irregular fabric was woven using a circular knitting machine and the above three types of yarn, and the width of the fabric was 150 cm and the weight was 400 GSM. The yarn used in this example was obtained by spinning and spinning polyester chips.

[0043] Here, as shown in Fig. 1, a needle carrying groove 2 is opened in a cam 1 of a circular knitting machine, and the needle carrying groove 2 is divided into a needle insertion section, a needle push-up section 22, a needle pull-down section 23, a step section 24, a yarn supply section 25, and a needle return section 26, and an arc-shaped corner 3 is provided between the needle push-up section 22 and the needle pull-down section 23, and the arc-shaped corner 3 includes an upper apex 31 and a lower apex 32, the height of the cam 1 is 25.5 mm, the distance from the lower apex 32 of the arc-shaped corner 3 to the bottom surface of the cam 1 is 21.35 mm, the distance from the lower inner wall of the needle return section 26 to the bottom surface of the cam 1 is 6.35 mm, and the width of the needle carrying groove 2 is 3.153 mm. The height of the needle hook in the circular knitting machine was 124 mm.

[0044] Example 3 The irregular fabric includes a plain weave surface and a raised surface, the density of the plain weave surface is greater than that of the raised surface, the shrinkage rate of the yarn used for the plain weave surface is 16%, the shrinkage rate of the yarn used for the raised surface is 10%, and the shrinkage rate of the binding yarn for connecting the plain weave surface and the raised surface is 31%. The irregular fabric was woven using a circular knitting machine and the above three types of yarn, and the width of the fabric was 150 cm and the weight was 400 GSM. The yarn used in this example was obtained by spinning and spinning polyester chips.

[0045] Here, as shown in Fig. 1, a needle carrying groove 2 is opened in a cam 1 of a circular knitting machine, and the needle carrying groove 2 is divided into a needle insertion section, a needle push-up section 22, a needle pull-down section 23, a step section 24, a yarn supply section 25, and a needle return section 26, and an arc-shaped corner 3 is provided between the needle push-up section 22 and the needle pull-down section 23, and the arc-shaped corner 3 includes an upper apex 31 and a lower apex 32, the height of the cam 1 is 25.5 mm, the distance from the lower apex 32 of the arc-shaped corner 3 to the bottom surface of the cam 1 is 20.35 mm, the distance from the lower inner wall of the needle return section 26 to the bottom surface of the cam 1 is 7.85 mm, and the width of the needle carrying groove 2 is 3.153 mm. The height of the needle hook in the circular knitting machine was 124 mm.

[0046] Example 4 The differences between this embodiment and the second embodiment are as follows. The yarn used for the raised surface is produced in the following manner. In S1, 1000g of polyester chips and 100g of silane-grafted mica powder in Preparation Example 1 are accurately weighed and uniformly mixed, then put into a screw extruder and extruded to be granulated, then the particles are put into a spinning device, the spinning temperature is controlled at 280°C, and the spun fibers are collected by a drawing and drawing treatment at a drawing and drawing ratio of 3.4, the spun fibers are allowed to stand and cooled to room temperature, and then spun to obtain yarns; In S2, the yarn was immersed in a dopamine hydrochloride solution, which was prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of 0.01 mol / L Tris buffer solution adjusted to a pH of 8.5. The solution was reacted at 40°C for 2 hours, and the yarn was taken out and dried to obtain the yarn to be used for the raised surface.

[0047] Example 5 The differences between this embodiment and the second embodiment are as follows. The yarn used for the raised surface is produced in the following manner. In S1, 1100g of polyester chips and 110g of silane-grafted mica powder in Preparation Example 1 are accurately weighed and uniformly mixed, then put into a screw extruder and extruded to be granulated, then the particles are put into a spinning device, the spinning temperature is controlled at 280°C, and the spun fibers are collected by a drawing and drawing treatment at a drawing and drawing ratio of 3.4, the spun fibers are allowed to stand and cooled to room temperature, and then spun to obtain yarn; In S2, the yarn was immersed in a dopamine hydrochloride solution, which was prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of 0.01 mol / L Tris buffer solution adjusted to a pH of 8.5. The solution was reacted at 40°C for 2 hours, and the yarn was taken out and dried to obtain the yarn to be used for the raised surface.

[0048] Example 6 The differences between this embodiment and the second embodiment are as follows. The yarn used for the raised surface is produced in the following manner. In S1, 1200g of polyester chips and 120g of silane-grafted mica powder in Preparation Example 1 are accurately weighed and uniformly mixed, then put into a screw extruder and extruded to be granulated, then the particles are put into a spinning device, the spinning temperature is controlled at 280°C, and the spun fibers are collected by a drawing and drawing treatment at a drawing and drawing ratio of 3.4, the spun fibers are allowed to stand and cooled to room temperature, and then spun to obtain yarns; In S2, the yarn was immersed in a dopamine hydrochloride solution, which was prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of 0.01 mol / L Tris buffer solution adjusted to a pH of 8.5. The solution was reacted at 40°C for 2 hours, and the yarn was taken out and dried to obtain the yarn to be used for the raised surface.

[0049] Example 7 The differences between this embodiment and the second embodiment are as follows. The yarn used for the raised surface is produced in the following manner. In S1, 1000g of polyester chips and 100g of silane-grafted mica powder in Preparation Example 1 are accurately weighed and uniformly mixed, then put into a screw extruder and extruded to be granulated, then the particles are put into a spinning device, the spinning temperature is controlled at 280°C, and the spun fibers are collected by a drawing and drawing treatment at a drawing and drawing ratio of 3.4, the spun fibers are allowed to stand and cooled to room temperature, and then spun to obtain yarns; In S2, the yarn was immersed in a dopamine hydrochloride solution, which was prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of a Tris buffer solution adjusted to 0.01 mol / L and pH 8.5. The solution was reacted at 60°C for 3 hours, and the yarn was taken out and dried to obtain the yarn to be used for the raised surface.

[0050] Example 8 The differences between this embodiment and the second embodiment are as follows. The yarn used for the raised surface is produced in the following manner. In S1, 1000g of polyester chips in Production Example 2 and 100g of silane-grafted mica powder in Production Example 1 are accurately weighed and uniformly mixed, then put into a screw extruder and extruded to be granulated, then the particles are put into a spinning device, the spinning temperature is controlled at 280°C, and the spun fibers are collected by a drawing and drawing treatment at a drawing and drawing ratio of 3.4, the spun fibers are allowed to stand and cooled to room temperature, and then spun to obtain yarn; In S2, the yarn was immersed in a dopamine hydrochloride solution, which was prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of 0.01 mol / L Tris buffer solution adjusted to a pH of 8.5. The solution was reacted at 40°C for 2 hours, and the yarn was taken out and dried to obtain the yarn to be used for the raised surface.

[0051] Example 9 The differences between this embodiment and the second embodiment are as follows. The yarn used for the raised surface is produced in the following manner. In S1, 1000g of polyester chips in Production Example 3 and 100g of silane-grafted mica powder in Production Example 1 are accurately weighed and uniformly mixed, then put into a screw extruder and extruded to be granulated, then the particles are put into a spinning device, the spinning temperature is controlled at 280°C, and the spun fibers are collected by a drawing and drawing treatment at a drawing and drawing ratio of 3.4, the spun fibers are allowed to stand and cooled to room temperature, and then spun to obtain yarn; In S2, the yarn was immersed in a dopamine hydrochloride solution, which was prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of 0.01 mol / L Tris buffer solution adjusted to a pH of 8.5. The solution was reacted at 40°C for 2 hours, and the yarn was taken out and dried to obtain the yarn to be used for the raised surface.

[0052] Example 10 The differences between this embodiment and the second embodiment are as follows. The yarn used for the raised surface is produced in the following manner. In S1, 1000g of polyester chips in Production Example 4 and 100g of silane-grafted mica powder in Production Example 1 are accurately weighed and uniformly mixed, then put into a screw extruder and extruded to be granulated, then the particles are put into a spinning device, the spinning temperature is controlled at 280°C, and the spun fibers are collected by a drawing and drawing treatment at a drawing and drawing ratio of 3.4, the spun fibers are allowed to stand and cooled to room temperature, and then spun to obtain yarn; In S2, the yarn was immersed in a dopamine hydrochloride solution, which was prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of 0.01 mol / L Tris buffer solution adjusted to a pH of 8.5. The solution was reacted at 40°C for 2 hours, and the yarn was taken out and dried to obtain the yarn to be used for the raised surface.

[0053] Comparative Example 1 The irregular fabric includes a plain weave surface and a raised surface, the density of the plain weave surface is higher than that of the raised surface, the shrinkage rate of the yarn used for the plain weave surface is 15%, the shrinkage rate of the yarn used for the raised surface is 9.5%, and the shrinkage rate of the binding yarn for connecting the plain weave surface and the raised surface is 5%. The irregular fabric was woven using a circular knitting machine and the above three types of yarn, and the width of the fabric was 150 cm and the weight was 400 GSM. The yarn used in this comparative example was obtained by spinning and spinning polyester chips.

[0054] Here, as shown in Fig. 1, a needle carrying groove 2 is opened in a cam 1 of a circular knitting machine, and the needle carrying groove 2 is divided into a needle insertion section, a needle push-up section 22, a needle pull-down section 23, a step section 24, a yarn supply section 25, and a needle return section 26, and an arc-shaped corner 3 is provided between the needle push-up section 22 and the needle pull-down section 23, and the arc-shaped corner 3 includes an upper apex 31 and a lower apex 32, the height of the cam 1 is 25.5 mm, the distance from the lower apex 32 of the arc-shaped corner 3 to the bottom surface of the cam 1 is 21.35 mm, the distance from the lower inner wall of the needle return section 26 to the bottom surface of the cam 1 is 6.35 mm, and the width of the needle carrying groove 2 is 3.153 mm. The height of the needle hook in the circular knitting machine was 124 mm.

[0055] Comparative Example 2 The irregular fabric includes a plain weave surface and a raised surface, the density of the plain weave surface is higher than that of the raised surface, the shrinkage rate of the yarn used for the plain weave surface is 15%, the shrinkage rate of the yarn used for the raised surface is 9.5%, and the shrinkage rate of the binding yarn for connecting the plain weave surface and the raised surface is 30%. The irregular fabric was woven using a circular knitting machine and the above three types of yarn, and the width of the fabric was 150 cm and the weight was 400 GSM. The yarn used in this comparative example was obtained by spinning and spinning polyester chips.

[0056] Here, as shown in Fig. 1, a needle carrying groove 2 is opened in a cam 1 of a circular knitting machine, and the needle carrying groove 2 is divided into a needle insertion section, a needle push-up section 22, a needle pull-down section 23, a step section 24, a yarn supply section 25, and a needle return section 26, and an arc-shaped corner 3 is provided between the needle push-up section 22 and the needle pull-down section 23, and the arc-shaped corner 3 includes an upper apex 31 and a lower apex 32, the height of the cam 1 is 25.5 mm, the distance from the lower apex 32 of the arc-shaped corner 3 to the bottom surface of the cam 1 is 16.5 mm, the distance from the lower inner wall of the needle return section 26 to the bottom surface of the cam 1 is 6.35 mm, and the width of the needle carrying groove 2 is 3.153 mm. The height of the needle hook in the circular knitting machine was 124 mm.

[0057] Comparative Example 3 The irregular fabric includes a plain weave surface and a raised surface, the density of the plain weave surface is higher than that of the raised surface, the shrinkage rate of the yarn used for the plain weave surface is 15%, the shrinkage rate of the yarn used for the raised surface is 9.5%, and the shrinkage rate of the binding yarn for connecting the plain weave surface and the raised surface is 30%. The irregular fabric was woven using a circular knitting machine and the above three types of yarn, and the width of the fabric was 150 cm and the weight was 400 GSM. The yarn used in this comparative example was obtained by spinning and spinning polyester chips.

[0058] Here, as shown in Fig. 1, a needle carrying groove 2 is opened in a cam 1 of a circular knitting machine, and the needle carrying groove 2 is divided into a needle insertion section, a needle push-up section 22, a needle pull-down section 23, a step section 24, a yarn supply section 25, and a needle return section 26, and an arc-shaped corner 3 is provided between the needle push-up section 22 and the needle pull-down section 23, and the arc-shaped corner 3 includes an upper apex 31 and a lower apex 32, the height of the cam 1 is 25.5 mm, the distance from the lower apex 32 of the arc-shaped corner 3 to the bottom surface of the cam 1 is 21.35 mm, the distance from the lower inner wall of the needle return section 26 to the bottom surface of the cam 1 is 6.35 mm, and the width of the needle carrying groove 2 is 3.153 mm. The height of the needle hook in the circular knitting machine was 125 mm.

[0059] Comparative Example 4 The differences between this comparative example and Example 4 are as follows. The yarn used for the raised surface is produced in the following manner. In S1, 1000g of polyester chips and 100g of mica powder are accurately weighed and mixed uniformly, then put into a screw extruder and extruded to form granules. The granules are then put into a spinning device, the spinning temperature is controlled at 280°C, and the spinning fibers are collected by a traction drawing treatment at a traction drawing ratio of 3.4. The spun fibers are allowed to stand and cooled to room temperature, and then spun to obtain yarn. In S2, the yarn was immersed in a dopamine hydrochloride solution, which was prepared by dissolving 0.2 g of dopamine hydrochloride in 100 ml of 0.01 mol / L Tris buffer solution adjusted to a pH of 8.5. The solution was reacted at 40°C for 2 hours, and the yarn was taken out and dried to obtain the yarn to be used for the raised surface.

[0060] Comparative Example 5 The differences between this comparative example and Example 4 are as follows. The yarn used for the raised surface is produced in the following manner. In S1, 1000 g of polyester chips and 100 g of the silane-grafted mica powder in Production Example 1 were accurately weighed and uniformly mixed, then fed into a screw extruder and extruded to form granules. The granules were then fed into a spinning device, the spinning temperature was controlled at 280°C, and a draw-draw treatment was performed at a draw-draw ratio of 3.4 to collect the spun fibers. The spun fibers were allowed to stand and cooled to room temperature, and then spun to obtain yarn to be used for the napped surface.

[0061] Comparative Example 6 The differences between this comparative example and Example 8 are as follows. The silane-grafted mica powder is produced by the following method. The mica powder was added to a 3% hexadecyltrimethoxysilane aqueous solution, heated to 60°C, and reacted for 30 minutes. After the reaction was completed, the mixture was filtered and dried to obtain silane-grafted mica powder.

[0062] Comparative Example 7 The differences between this comparative example and Example 8 are as follows. The polyester chips are treated in the following manner. The polyester chips and 3-aminopropyltriethoxysilane were uniformly mixed in a mass ratio of 100:2, mixed at 70° C. and 800 r / min for 15 minutes, and then dried at 80° C. to obtain treated polyester chips.

[0063] Performance Testing 1. The fabrics produced in Examples 1 to 3 and Comparative Examples 1 to 3 were heated in a water bath at 95° C. for 30 minutes, dried, and then spread out flat, and the thickness of the fabric was measured and recorded.

[0064] JPEG2024178089000002.jpg39160

[0065] Referring to Table 1, the fabrics of Examples 1 to 3 have a greater thickness than Comparative Example 1, which indicates that by selecting a yarn with a high shrinkage rate to connect the plain weave surface and the raised surface, the loops in the raised surface can be pulled and the height of the loops in the raised surface can be increased. In addition, in line with Comparative Examples 2 and 3, the thickness of the fabric in Example 1 is thicker, which indicates that by adjusting the apex position of the arc-shaped angle in the cam upward and appropriately adjusting the height of the needle hook lower, the height of the loops in the raised surface can be increased, thereby increasing the final thickness of the fabric.

[0066] Second, referring to GB / T4802.2 "Textiles: Measurement of fuzzing and pilling properties of woven fabrics, Part 2: Modified Martindale method", pilling and fuzzing measurements were performed on the raised surface of the fabric, and three samples were taken for each example and comparative example, and the samples were rotated 2000 times with a YG401G fabric Martindale device, and then judged against the standard sample photo in a YG982D pilling rating cabinet, and the average value of the three measurements was taken. Next, the samples were rotated 3000 times with a YG401G fabric Martindale device, and then judged against the standard sample photo in a YG982D pilling rating cabinet, and the average value of the three measurements was taken.

[0067] JPEG2024178089000003.jpg162161

[0068] Referring to Table 2, the fabrics in Examples 4 to 6 have better pilling and fuzzing resistance than Comparative Example 4, which indicates 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 abrasion resistance of the yarn, and further expressing the fabric as having excellent pilling and fuzzing resistance.

[0069] The fabrics in Examples 1 and 7 exhibited better anti-pilling performance than Comparative Example 5, which indicates that coating the surface of the yarn with polydopamine film and relying on the smooth and dense structure of the polydopamine film can give the yarn excellent smoothness and abrasion resistance, and reduce the occurrence of pilling caused by friction of the yarn. The fabrics in Examples 1 and 7 exhibited excellent anti-pilling and anti-fuzzing performance even after 5,000 times of rubbing, and analysis showed that after excessive rubbing, the polydopamine film coated on the surface of the yarn can be removed by friction, and at this time, the mica powder arranged on the surface of the yarn plays the main anti-pilling and anti-fuzzing effect, thereby indicating that the yarn has excellent anti-pilling and anti-fuzzing effect.

[0070] In accordance with Examples 1, 8 to 10, polyester chips are pre-treated with polymeric long-chain silane. By relying on the active groups provided by the polymeric long-chain silane, an interaction force with the polydopamine film is generated, which makes the polydopamine film adhere firmly to the surface of the yarn, and improves the durability of the anti-pilling performance of the yarn. It also promotes the uniform dispersion of the low molecular weight silane in the system, and makes the dispersion of the mica powder on the surface of the yarn more uniform, thereby further improving the anti-pilling performance of the yarn.

[0071] Combined with 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 high molecular long-chain silane, the silane long chains on the polyester chips and the silane long chains on the mica powder may be entangled in the whole system, thereby affecting the movement of the mica powder in the system and preventing the aggregation of the mica powder on the surface of the yarn, which causes the anti-pilling performance of the yarn in Comparative Example 6 to be weaker than that of Example 8.

[0072] In accordance with Example 8 and Comparative Example 7, the anti-pilling effect of the yarn in Comparative Example 7 is low. Analysis shows that after both polyester chips and mica powder are treated with low molecular weight silane, during the yarn forming process, the mica powder aggregates on the surface of the yarn due to the transition action of low molecular weight silane, and the low molecular weight 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 generate an interaction force with the low molecular weight silane on the mica powder. Therefore, compared with the polydopamine film on the yarn in Example 8 that can generate an interaction force with the high molecular weight long-chain silane and the low molecular weight silane at the same time, the fastness of the polydopamine film on the yarn in Comparative Example 7 is relatively low, so that the anti-pilling effect of the yarn in Comparative Example 7 is lower than that of Example 8.

[0073] The specific examples are merely for the purpose of illustrating the present application and are not intended to limit the present application. After reading this specification, a person skilled in the art may make amendments to the present examples as necessary that do not make a creative contribution thereto, but any amendments that fall within the scope of the claims of the present application will be protected by the Patent Law. [Explanation of symbols]

[0074] 1...cam, 2...needle transport groove, 21...needle insertion section, 22...needle push-up section, 23...needle pull-down section, 24...step section, 25...yarn supply section, 26...needle return section, 3...arc-shaped angle, 31...upper vertex, 32...lower vertex.

Claims

1. A non-patterned fabric comprising a plain weave surface and a raised surface, the shrinkage percentage of a yarn used for the plain weave surface is 14-16%, the shrinkage percentage of a yarn used for the raised surface is 9-10%, and the shrinkage percentage of a binding yarn connecting the plain weave surface and the raised surface is 29-31%, The irregular fabric is produced by a circular knitting machine, the height of the needle hook of the circular knitting machine is 124 mm, a needle carrying groove (2) is opened in a cam (1) of the circular knitting machine, the needle carrying groove (2) is divided into a needle insertion section (21), a needle push-up section (22), a needle pull-down section (23), a step section (24), a yarn supply section (25), and a needle return section (26) in this order, and an arc-shaped angle (3) is provided between the needle push-up section (22) and the needle pull-down section (23), and the arc-shaped angle (3) includes an upper apex (31) and a lower apex (32), the height of the cam (1) is 25.5 mm, the distance from the lower apex (32) of the arc-shaped angle (3) to the bottom surface of the cam (1) is 18.85 to 21.35 mm, the distance from the lower inner wall of the needle return portion (26) to the bottom surface of the cam (1) is 6.35 to 7.85 mm, and the width of the needle carrying groove (2) is 3.151 to 3.153 mm.

2. The irregular fabric according to claim 1, characterized in that the shrinkage rate of the yarn used for the plain weave surface is 15%, the shrinkage rate of the yarn used for the raised surface is 9.5%, and the shrinkage rate of the binding yarn connecting the plain weave surface and the raised surface is 30%.

3. The irregular fabric according to claim 1, wherein the density of the plain weave surface is greater than the density of the raised surface.

4. The irregular fabric according to claim 1, characterized in that the surface of the yarn used for the raised surface is coated with a polydopamine film, and the yarn is made from, by weight, 100 to 120 parts of polyester chips and 10 to 12 parts of silane-grafted mica powder.

5. The irregular fabric according to claim 4, characterized in that the polyester chips are modified with a high molecular weight long-chain silane, and the silane-grafted mica powder is a graft of a low molecular weight silane and mica powder.

6. The polyester chips are produced by mixing polyester chips and polymeric long-chain silane in a mass ratio of 100:(2-3), continuously stirring and mixing at 60-70°C, and drying to obtain treated polyester chips.

7. The modified fabric of claim 6, characterized in that the polymeric long-chain silane is octadecyltrimethoxysilane or hexadecyltrimethoxysilane.

8. The silane-grafted mica powder is produced by adding mica powder to an aqueous solution of low molecular weight silane, heating the mixture to 60-70°C, reacting the mixture, filtering the mixture, and drying the mixture to obtain the silane-grafted mica powder.

9. The irregular fabric according to claim 1, characterized in that the manufacturing process for coating the surface of the yarn with a polydopamine film comprises immersing the yarn in a dopamine hydrochloride solution, mixing and reacting the yarn at 40-60°C for 2-3 hours, removing the yarn and drying it to obtain a yarn having a surface coated with a polydopamine film.

10. The method for producing an irregular fabric according to any one of claims 1 to 9, characterized in that a yarn having a shrinkage rate of 14 to 16% is selected as a yarn for the plain weave surface, a yarn having a shrinkage rate of 9 to 10% is selected as a yarn for the raised surface, and a yarn having a shrinkage rate of 29 to 31% is selected as a yarn connecting the plain weave surface and the raised surface, and then these are spun and woven using a circular knitting machine to produce an irregular fabric.

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