A tricot pique fabric

Abstract

This invention relates to a warp-knitted twill fabric, belonging to the field of textile technology. The purpose of this invention is to provide a warp-knitted twill fabric and its manufacturing process. Specifically, the manufacturing process employs a modified warp plain weave and a warp plain / short-padded composite weave, woven on a high-speed single-needle bed warp knitting machine. During the knitting process, a warp-knitted twill structure is formed. Subsequent finishing processes such as washing, dyeing, and setting achieve the twill effect. The twill pattern of the loop structure has a stronger three-dimensional effect and better breathability. This not only meets the market's aesthetic demands for high-end apparel and decorative fabrics but also significantly enhances the product's fashion appeal and market added value.

Description

Technical Field

[0001] This invention relates to a warp-knitted twill fabric, belonging to the field of textile technology. Background Technology

[0002] Twill fabric, due to its abrasion resistance and clear texture, is widely used in clothing fabrics such as shirts, outerwear, and trousers, as well as decorative fabrics such as curtains, sofas, and chairs. Traditional twill fabrics are mostly woven, giving them a crisp and structured feel, but they have poor elasticity and are prone to wrinkling. Weft-knitted twill fabrics are also available, which use weft-knitted floats to create a more elastic and comfortable feel compared to woven twill fabrics due to the elasticity of their loop structure. However, they have drawbacks such as being prone to unraveling, significant dimensional changes after washing, weft skew, and low production efficiency.

[0003] Warp-knitted fabrics have performance between woven and weft-knitted fabrics. They are produced at high speed and efficiency. Although conventional warp-knitted fabrics have good elasticity, they are mainly made of chemical fiber filaments, resulting in poor comfort. Because the warp yarns are fed into the loop-forming parts from the warp direction, due to their structural limitations, plain weave is commonly used for clothing and decorative fabrics. Even if there is a small amount of twill structure, it is difficult to form a clear and stable twill, which can easily lead to problems such as discontinuous patterns. This makes it impossible to meet the dual requirements of crispness and aesthetics for different usage scenarios. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a warp-knitted twill fabric and its production process. Specifically, this process employs a modified warp plain weave and a warp plain / inserted pad composite weave, woven on a single-needle bed high-speed warp knitting machine. During the knitting process, a warp-knitted twill structure is formed. Subsequent finishing processes such as washing, dyeing, and setting achieve the twill effect. The loop structure of the twill pattern has a stronger three-dimensional effect and better breathability. The single-needle bed warp knitting technology allows for the use of either filament or staple fiber yarns, with raw material components including polyester, cationic... Ion-modified polyester, recycled polyester, nylon, bio-based nylon, spandex, modified polyester PTT or PBT, cotton, wool, or blended yarns can impart the natural feel and twill effect to fabrics, while also increasing the durability and elasticity of the fabric surface texture and extending its service life. On the front side of the process, variations in stitch length and warp weave or warp / short-padded composite weave, combined with appropriate yarn threading, create a clear, three-dimensional twill pattern. On the reverse side, warp weave creates a certain length of extended lines, providing a smooth feel and a flat visual effect.

[0005] In a first aspect, the present invention provides a warp-knitted twill fabric, the fabric being knitted on a single-needle-bed warp knitting machine, the warp knitting machine being configured with at least three guide bars, including a first guide bar GB1 and a second guide bar GB2 for forming the fabric's process front side, and a third guide bar GB3 for forming the ground structure.

[0006] The yarn movement patterns of the first guide bar GB1 and the second guide bar GB2 complement each other, so as to form a structure with n looped areas and m non-looped areas alternating in the longitudinal direction on the process front of the fabric by varying the warp plain weave or the warp plain / non-looped composite weave, where n is 2 or 3 and m is 1 or 2. The looped areas are raised relative to the non-looped areas, thereby forming a three-dimensional concave-convex n / m twill structure on the process front.

[0007] The third comb GB3 is fully woven in a plain weave to form the ground weave of the fabric, and its padding yarn direction is opposite to that of the first comb GB1 and the second comb GB2. In some embodiments, the n / m twill structure is 2 / 2 right twill, 2 / 2 left twill, 2 / 1 right twill, 2 / 1 left twill, or 3 / 1 right twill.

[0008] In some embodiments, the single-needle bed warp knitting machine is further equipped with a fourth guide bar GB4, which is fully knitted in a warp plain weave and together with the third guide bar GB3 constitutes the ground weave.

[0009] In some embodiments, the yarn used in the fourth comb GB4 is spandex, PBT or PTT elastic yarn to give the fabric lateral elasticity.

[0010] In some embodiments, the yarn used in the first comb GB1 and the second comb GB2 is staple fiber yarn or chemical fiber filament.

[0011] In some embodiments, the staple fiber yarn is one or more of cotton yarn, wool yarn, cotton and chemical fiber blended yarn, or wool and chemical fiber blended yarn.

[0012] In some embodiments, the twill structure is a 2 / 2 right-hand twill, wherein: In some embodiments, the weave structure of the first comb GB1 is 1-0 / 1-1 / 2-3 / 1-1 / / , and the warp threading method is 2-thread 2-open; In some embodiments, the weave structure of the second comb GB2 is 1-1 / 1-0 / 1-1 / 2-3 / / , and the weaving pattern is 1-hole, 2-weaving, 1-hole.

[0013] In some embodiments, the twill structure is a 2 / 1 left twill, wherein: The first comb GB1 has a weave structure of 1-0 / 1-1 / 1-2 / / and a warp threading method of 1 open and 2 through. The second comb GB2 has a weave structure of 1-1 / 1-0 / 2-3 / 1-1 / / and a warp threading pattern of 2 threads through 1 open thread.

[0014] In some embodiments, the twill structure is a 3 / 1 right-hand twill, wherein: The first comb GB1 has a weave structure of 2-3 / 1-0 / 1-2 / 1-0 / / and a warp threading pattern of 1 thread through 1 gap. The second comb GB2 has a weave structure of 1-2 / 1-0 / 2-3 / 1-0 / / and a warp threading pattern of 1 thread through 1 gap.

[0015] On the other hand, the present invention provides a production process for warp-knitted twill fabric, including the following steps: 1) Material selection: Select filament or staple fiber yarn as raw material for each comb bar according to the design requirements; 2) Warping: According to the fabric width, warp density and warp threading requirements, the yarns used in each comb bar are warped; 3) Weaving: On a single-needle bed warp knitting machine, according to the set weave structure, the padding yarn numbers and warp threading method are controlled to weave GB1, GB2, GB3 and optional GB4 guide bars respectively, forming the three-dimensional concave-convex n / m twill structure on the process front in one step; 4) Finishing: The woven fabric is washed, dyed and set in sequence to obtain the finished warp-knitted twill fabric.

[0016] Advantages and effects of the present invention: (1) This invention breaks through the limitations of traditional woven and weft-knitted floating twill fabrics, which have a single surface effect, low wear resistance, and lack of layering, by forming a warp-knitted fabric with a three-dimensional twill structure. This three-dimensional twill does not rely on finishing processes such as embossing or burnout, but is directly formed through the interaction of weaving methods and yarn threading rules, giving the fabric a rich tactile texture and visual three-dimensionality. This not only meets the market's aesthetic demand for high-end apparel and decorative fabrics, but also significantly enhances the product's fashion sense and market added value; (2) The variations of the plain weave and plain / insufficient composite weave formed by GB1 and GB2 of this invention are manifested on the front of the process by forming a special concave-convex twill structure using weaving rules and yarn threading design. Since the concave-convex twill is not formed by post-processing such as embossing or burnout, the structure is stable, durable and has a good body, solving the shortcomings of woven fabrics being restricted and lacking elasticity, weft-knitted fabrics being easy to unravel and weft skew. (3) The present invention can directly form warp-knitted twill fabric with concave and convex effects in the weaving stage through single needle bed knitting process. It is produced by warp knitting process, which is efficient and has a lower cost than traditional woven twill fabric and weft-knitted twill fabric. Attached Figure Description

[0017] Figure 1 This is a motion diagram of the packing yarn of a type of comb GB1~GB3 knitted by a single-needle bed four-comb warp knitting machine according to Embodiment 1 of the present invention; Figure 2This is a motion diagram of the packing yarn of a comb GB1~GB4 structure knitted by a single-needle bed four-comb warp knitting machine in Embodiment 2 of the present invention; Figures 3-5 This is a motion diagram of the packing yarn of the comb GB1 to GB3 knitted by a single-needle bed four-comb warp knitting machine in Embodiments 3 to 5 of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In this invention, the terms "first" and "second" are used only to distinguish similar components / parts in different positions or with different characteristics, and have no other limiting meaning; "upper" refers to the direction in which each component is away from the ground, and "lower" refers to the direction in which each component is away from the ground.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In a first aspect, the present invention provides a warp-knitted twill fabric, the fabric being knitted on a single-needle-bed warp knitting machine, the warp knitting machine being configured with at least three guide bars, including a first guide bar GB1 and a second guide bar GB2 for forming the fabric's process front side, and a third guide bar GB3 for forming the ground structure.

[0023] The yarn movement patterns of the first guide bar GB1 and the second guide bar GB2 complement each other, so as to form a structure with n looped areas and m non-looped areas alternating in the longitudinal direction on the process front of the fabric by varying the warp plain weave or the warp plain / non-looped composite weave, where n is 2 or 3 and m is 1 or 2. The looped areas are raised relative to the non-looped areas, thereby forming a three-dimensional concave-convex n / m twill structure on the process front.

[0024] The third comb GB3 is fully woven in a plain weave to form the ground weave of the fabric, and its padding yarn direction is opposite to that of the first comb GB1 and the second comb GB2. In some embodiments, the n / m twill structure is 2 / 2 right twill, 2 / 2 left twill, 2 / 1 right twill, 2 / 1 left twill, or 3 / 1 right twill.

[0025] In some embodiments, the single-needle bed warp knitting machine is further equipped with a fourth guide bar GB4, which is fully knitted in a warp plain weave and together with the third guide bar GB3 constitutes the ground weave.

[0026] In some embodiments, the yarn used in the fourth comb GB4 is spandex, PBT or PTT elastic yarn to give the fabric lateral elasticity.

[0027] In some embodiments, the yarn used in the first comb GB1 and the second comb GB2 is staple fiber yarn or chemical fiber filament.

[0028] In some embodiments, the staple fiber yarn is one or more of cotton yarn, wool yarn, cotton and chemical fiber blended yarn, or wool and chemical fiber blended yarn.

[0029] In some embodiments, the twill structure is a 2 / 2 right-hand twill, wherein: In some embodiments, the weave structure of the first comb GB1 is 1-0 / 1-1 / 2-3 / 1-1 / / , and the warp threading method is 2-thread 2-open; In some embodiments, the weave structure of the second comb GB2 is 1-1 / 1-0 / 1-1 / 2-3 / / , and the weaving pattern is 1-hole, 2-weaving, 1-hole.

[0030] In some embodiments, the twill structure is a 2 / 1 left twill, wherein: The first comb GB1 has a weave structure of 1-0 / 1-1 / 1-2 / / and a warp threading method of 1 open and 2 through. The second comb GB2 has a weave structure of 1-1 / 1-0 / 2-3 / 1-1 / / and a warp threading pattern of 2 threads through 1 open thread.

[0031] In some embodiments, the twill structure is a 3 / 1 right-hand twill, wherein: The first comb GB1 has a weave structure of 2-3 / 1-0 / 1-2 / 1-0 / / and a warp threading pattern of 1 thread through 1 gap. The second comb GB2 has a weave structure of 1-2 / 1-0 / 2-3 / 1-0 / / and a warp threading pattern of 1 thread through 1 gap.

[0032] On the other hand, the present invention provides a production process for warp-knitted twill fabric, including the following steps: 1) Material selection: Select filament or staple fiber yarn as raw material for each comb bar according to the design requirements; 2) Warping: According to the fabric width, warp density, and warp threading requirements, the yarns used in each guide bar are warped. Specifically, short fiber yarns and chemical filaments are warped according to the width, warp density, and threading rate requirements. For example, with a width of 150cm and a warp density of 15.0wpc, the number of warping heads is calculated: 564×8 for GB3 and GB4. The temperature at the warping site is 25±1℃, and the relative humidity is 65±5%. Higher and more stable temperature and humidity help stabilize the twist of polyester yarn and keep the surface soft, avoiding tangling between yarns, which is beneficial to the production of warp-knitted products. An automatic dust collection device prevents short fiber yarn fly waste from contaminating the warping machine parts and the production site. 3) Weaving: On a single-needle bed warp knitting machine, according to the set weave structure, yarn padding numbers, and warp threading method, the GB1, GB2, GB3, and optional GB4 guide bars are controlled to knit in one step, forming the three-dimensional convex n / m twill structure on the process front. Preferably, a high-speed Trico warp knitting machine is used for weaving; the machine width is 186 inches. The weave structure, yarn padding numbers, warp feed amount, and tension density are input into the computer display screen of the control cabinet, saved, and the machine file is loaded before starting the machine. After weaving, the raw fabric is obtained, weighed, bagged, and stored in the warehouse. 4) Finishing: The woven fabric is washed, dyed and set in sequence to obtain the finished warp-knitted twill fabric.

[0033] 5) Inspection and packaging.

[0034] Example 1 This embodiment provides a warp-knitted 2 / 2 right-hand twill fabric, which is made of 100% 120s / 2 cotton yarn.

[0035] The specific process of its preparation is as follows: including the selection and matching of the structure of each comb, preparation process, warping, weaving, and finishing.

[0036] 1) Material selection: 120s / 2 cotton yarn is selected as the raw material; 2) Warping: GB1 warp threading is 2 blanks and 2 passes, GB2 warp threading is 1 blank, 2 passes and 1 blank; GB1 and GB2 form twill by weaving a plain / short pad composite structure, and GB3 forms the fabric skeleton by weaving a three-needle plain weave; the calculated warp thread count is 282×8 for GB1 and GB2. 3) Weaving: Model: High-speed Trik warp knitting machine HKS3 Model number: 32 pins Warp knitting structure and yarn threading method: GB1 comb: 1-0 / 1-1 / 2-3 / 1-1 / / , 2 through 2 open GB2: Comb: 1-1 / 1-0 / 1-1 / 2-3 / / , 1 empty 2 through 1 empty; GB3 comb: 2-3 / 1-0 / / , full thread; raw material: GB1~3 comb: 120s / 2 cotton yarn.

[0037] 4) The finished product weighs approximately 180g / m2.

[0038] Through the above process, a warp-knitted twill fabric can be obtained, which is woven from 120s / 2 cotton yarn. The first and second combs form a raised twill effect; the third comb weaves the ground structure, giving the fabric excellent comfort and softness. The longitudinal elongation is 22%, the transverse elongation is 28%, and the dimensional change rate after washing is -1.2%. It is suitable for shirts, lightweight jackets, etc.

[0039] Example 2 This embodiment provides a warp-knitted 2 / 2 left twill fabric, which is composed of the following raw materials by weight percentage: 55% 120s / 2 cotton yarn, 35% 50D / 36F matte PET / PTT composite filament, and 10% 30D spandex.

[0040] The specific process of its preparation is as follows: including the selection and matching of the structure of each comb, preparation process, warping, weaving, and finishing.

[0041] 1) Material selection: 120s / 2 cotton yarn, 50D / 36F matte PET / PTT composite filament, and 30D spandex are selected as raw materials; 2) Warping: GB1 warp threading is 2 blanks and 2 passes, GB2 warp threading is 1 blank, 2 passes and 1 blank; GB1 and GB2 form twill by weaving a warp plain / short pad composite structure, while GB3 and GB4 form the fabric skeleton by weaving a three-needle warp plain structure and a two-needle warp plain structure; the calculated warp head count is 282×8 for GB1 and GB2. 3) Weaving: Model: High-speed Trik warp knitting machine HKS4 Model number: 32 pins Warp knitting structure and yarn threading method: GB1: 2-3 / 2-2 / 1-0 / 2-2 / / , 2 holes 2 penetrations GB2: 2-2 / 2-3 / / 2-2 / 1-0 / , 1 air 2 through 1 air GB3:2-3 / 1-0 / / , Full penetration GB4: 1-0 / 1-2 / / , Full penetration raw material: GB1~2 comb: 120s / 2 cotton yarn; GB3: 50D / 36F matte PET / PTT composite filament; GB4: 30D spandex.

[0042] 4) The finished product weighs approximately 220g / m2.

[0043] Through the above processes, a warp-knitted twill fabric can be obtained, woven from 120s / 2 cotton yarn, 50D / 36F matte PET / PTT composite filament, and 30D spandex. The first and second combs create a raised twill effect; the third and fourth combs weave an elastic structure, giving the fabric excellent elasticity and softness. The longitudinal elongation is 25%, the transverse elongation is 45%, and the dimensional change after washing is -1.5%, making it suitable for trousers, sportswear, and other applications.

[0044] Example 3 This embodiment provides a warp-knitted 2 / 1 twill fabric, which is composed of the following raw materials by weight percentage: 62% Nm160 / 2 wool / nylon blended yarn and 38% 50D24F nylon high-elastic yarn.

[0045] The specific process of its preparation is as follows: including the selection and matching of the structure of each comb, preparation process, warping, weaving, and finishing.

[0046] 1) Material selection: Nm160 / 2 wool / nylon blended yarn and 50D24F nylon high-elastic yarn are selected as raw materials; 2) Warping: GB1 warp threading is 1 pass and 2 passes, GB2 warp threading is 2 passes and 1 pass; GB1 and GB2 use a plain warp / short pad composite structure to form a twill weave, while GB3 forms the fabric skeleton by knitting a four-needle plain warp structure; the calculated warp thread count is 376×8 for GB1 and GB2. 3) Weaving: Model: High-speed Trik warp knitting machine HKS3; Serial number: 28 pins; Warp knitting structure and yarn threading method: GB1: 1-0 / 1-1 / 1-2 / / , 1 hole 2 penetration; GB2: 1-1 / 1-0 / 2-3 / 1-1 / / , 2 through 1 open; GB3:3-4 / 1-0 / / , Full penetration; raw material: GB1~2 combed yarn: Nm160 / 2 wool / nylon blended yarn; GB3 comb: 50D24F nylon high-elastic yarn.

[0047] 4) The finished product weighs approximately 250g / m2.

[0048] Through the above process, a warp-knitted twill fabric can be obtained, which is woven from Nm160 / 2 wool blend yarn and 50D24F nylon high-elastic yarn. The first and second combs form a concave-convex twill effect; the third comb weaves the ground structure, giving the fabric excellent elasticity and fullness. The longitudinal elongation is 18%, the transverse elongation is 25%, and the dimensional change rate after washing is -1.5%. It is suitable for use in trousers, seat fabrics, etc.

[0049] Example 4 This embodiment provides a warp-knitted 2 / 2 left twill fabric, which is composed of the following raw materials by weight percentage: 60% 50D / 36F recycled polyester low elastic yarn and 40% 40D / 24F recycled polyester filament.

[0050] The specific process of its preparation is as follows: including the selection and matching of the structure of each comb, preparation process, warping, weaving, and finishing.

[0051] 1) Material selection: 50D / 36F recycled polyester low-elasticity yarn and 40D / 24F recycled polyester filament are selected as raw materials; 2) Warping: GB1 warp threading is 2 threads through 1 gap, GB2 warp threading is 1 gap through 2 threads; GB1 and GB2 form twill by weaving a plain / short pad composite structure, while GB3 forms the fabric skeleton by weaving a four-needle plain weave; the calculated warp thread count is 376×8 for GB1 and GB2. 3) Weaving: Model: High-speed Trik warp knitting machine HKS3; Model number: 36 pins Warp knitting structure and yarn threading method: The front side of the design features a 2 / 1 right-hand diagonal pattern; GB1: 1-2 / 1-1 / 1-0 / / , 2 through 1 empty; GB2: 2-2 / 2-3 / 1-0 / 2-2 / / , 1 hole 2 penetrations; GB3: 1-0 / 3-4 / / , full penetration; raw material: GB1~2 comb: 50D / 36F recycled polyester low-elasticity yarn; GB3: 40D / 24F recycled polyester filament.

[0052] 4) The finished product weighs approximately 150g / m2.

[0053] Through the above process, a warp-knitted twill fabric can be obtained, which is woven from 50D / 36F recycled polyester low-elastic yarn and 40D / 24F recycled polyester filament. The first and second combs form a twill effect with concave and convex textures; the third comb weaves the ground structure, giving the fabric excellent comfort and crispness. The longitudinal elongation is 12%, the transverse elongation is 18%, and the dimensional change rate after washing is -1.0%. It is suitable for use in lightweight trousers, sportswear, etc.

[0054] Example 5 This embodiment provides a warp-knitted 3 / 1 right-hand twill fabric, which is composed of the following raw materials by weight percentage: 55% 120s / 2 cotton yarn and 35% 50D / 36F matte PET / PTT composite filament.

[0055] The specific process of its preparation is as follows: including the selection and matching of the structure of each comb, preparation process, warping, weaving, and finishing.

[0056] 1) Material selection: 120s / 2 cotton yarn and 50D / 36F matte PET / PTT composite filament are selected as raw materials; 2) Warping: GB1 warp is 1 pass 1 gap, GB2 warp is 1 pass 1 gap; GB1 and GB2 form twill by weaving a variation of the warp plain weave, while GB3 forms the fabric skeleton by weaving a four-needle warp plain weave; the calculated number of warp heads is 282×8 for GB1 and GB2. 3) Weaving: Model: High-speed Trik warp knitting machine HKS3; Model number: 32 pins; Warp knitting structure and yarn threading method: GB1:2-3 / 1-0 / 1-2 / 1-0 / / ,1 through 1 empty; GB2:1-2 / 1-0 / 2-3 / 1-0 / / ,1 through 1 empty; GB3: 1-0 / 3-4 / / , full penetration; raw material: GB1~2 comb: 120s / 2 cotton yarn; GB3: 50D / 36F matte PET / PTT composite filament.

[0057] 4) The finished product weighs approximately 200g / m2.

[0058] Through the above processes, a warp-knitted twill fabric can be obtained, which is woven from 120s / 2 cotton yarn and 50D / 36F matte PET / PTT composite filament. The first and second combs form a raised twill effect; the third comb weaves the ground structure, giving the fabric excellent comfort and softness. The longitudinal elongation is 16%, the transverse elongation is 21%, and the dimensional change after washing is -1.3%. It is suitable for use in trousers, sportswear, and chair fabrics.

[0059] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A warp-knitted twill fabric, characterized in that, The fabric is woven on a single-needle bed warp knitting machine equipped with at least three guide bars, including a first guide bar GB1 and a second guide bar GB2 for forming the fabric's working face, and a third guide bar GB3 for forming the ground weave. The yarn padding movement patterns of the first guide bar GB1 and the second guide bar GB2 complement each other, forming an alternating structure of n looped areas and m non-looped areas in the warp direction on the fabric's working face by varying the warp plain weave or the warp plain / non-looped composite weave, where n is 2 or 3 and m is 1 or 2. The looped areas are raised relative to the non-looped areas, thereby forming a three-dimensional, convex n / m twill structure on the working face. The third guide bar GB3 is fully woven with a warp plain weave to form the ground weave of the fabric, and its yarn padding direction is opposite to that of the first guide bar GB1 and the second guide bar GB2.

2. The warp-knitted twill fabric according to claim 1, characterized in that, The n / m twill structure is 2 / 2 right twill, 2 / 2 left twill, 2 / 1 right twill, 2 / 1 left twill, or 3 / 1 right twill.

3. The warp-knitted twill fabric according to claim 1, characterized in that, The single-needle bed warp knitting machine is also equipped with a fourth guide bar GB4, which is fully knitted in a plain warp weave and together with the third guide bar GB3 constitutes the ground weave.

4. The warp-knitted twill fabric according to claim 3, characterized in that, The yarn used in the fourth comb GB4 is spandex, PBT or PTT elastic yarn to give the fabric lateral elasticity.

5. The warp-knitted twill fabric according to claim 1, characterized in that, The yarn used in the first comb GB1 and the second comb GB2 is staple fiber yarn or chemical fiber filament.

6. The warp-knitted twill fabric according to claim 5, characterized in that, The short fiber yarn is one or more of cotton yarn, wool yarn, cotton and chemical fiber blended yarn, or wool and chemical fiber blended yarn.

7. The warp-knitted twill fabric according to claim 1, characterized in that, The twill structure is a 2 / 2 right-hand twill, wherein: The first comb GB1 has a weave structure of 1-0 / 1-1 / 2-3 / 1-1 / / and a warp threading pattern of 2 threads through 2 gaps. The second comb GB2 has a weave structure of 1-1 / 1-0 / 1-1 / 2-3 / / and a warp threading pattern of 1-hole, 2-thread, 1-hole.

8. The warp-knitted twill fabric according to claim 1, characterized in that, The twill structure is a 2 / 1 left twill, wherein: The first comb GB1 has a weave structure of 1-0 / 1-1 / 1-2 / / and a warp threading method of 1 open and 2 through. The second comb GB2 has a weave structure of 1-1 / 1-0 / 2-3 / 1-1 / / and a warp threading pattern of 2 threads through 1 open thread.

9. The warp-knitted twill fabric according to claim 1, characterized in that, The twill structure is a 3 / 1 right-hand twill, wherein: The first comb GB1 has a weave structure of 2-3 / 1-0 / 1-2 / 1-0 / / and a warp threading pattern of 1 thread through 1 gap. The second comb GB2 has a weave structure of 1-2 / 1-0 / 2-3 / 1-0 / / and a warp threading pattern of 1 thread through 1 gap.

10. The production process of warp-knitted twill fabric as described in any one of claims 1-9, characterized in that, Includes the following steps: 1) Material selection: Select filament or staple fiber yarn as raw material for each comb bar according to the design requirements; 2) Warping: According to the fabric width, warp density and warp threading requirements, the yarns used in each comb bar are warped; 3) Weaving: On a single-needle bed warp knitting machine, according to the set weave structure, the padding yarn numbers and warp threading method are controlled to weave GB1, GB2, GB3 and optional GB4 guide bars respectively, forming the three-dimensional concave-convex n / m twill structure on the process front in one step; 4) Finishing: The woven fabric is washed, dyed and set in sequence to obtain the finished warp-knitted twill fabric.

Images