A TPU core-spun yarn covered jacquard warp knitted mesh fabric and its manufacturing method

Abstract

The present application discloses a TPU core-spun yarn covered jacquard layer warp knitted fabric and its manufacturing method, including face and bottom yarns, bright yarns, and section-dyed polyester semi-dull low-elastic light mesh yarns. The bright black TPU core-spun yarn of the face and bottom yarns is knitted through the face and bottom guide bars by using a chain stitch changing weft insertion organizational structure to form the ground tissue of the fabric. The jacquard yarns, bright yarns, and section-dyed polyester semi-dull low-elastic light mesh yarns are used to knit the ground comb jacquard and the jacquard layer of the fabric through the jacquard guide bar or the Jacquard jacquard guide bar by using a combination of organizational structures of changing weft insertion with a relatively small pattern height and width range and changing weft insertion with a relatively large pattern height and width range, thereby knitting a TPU core-spun yarn covered jacquard layer warp knitted fabric with bright black TPU core-spun yarns on both the upper and lower surfaces. By optimizing the structure and knitting method of the TPU core-spun yarn covered jacquard layer warp knitted fabric, this fabric can be used on either the front or the back, and can exhibit special effects of different styles.

Description

Technical Field

[0001] The present application relates to the technical field of textiles, and in particular to a TPU core-spun yarn covered jacquard layer warp knitted mesh fabric and a manufacturing method thereof. Background Art

[0002] TPU is a thermoplastic elastomer material. Due to its good and plump elastic feel and relatively good natural water repellent function, its application in the shoe material field, especially in the fly-knit shoe material field, has been increasingly widespread in recent years. However, its large boiling water shrinkage rate and poor dimensional stability of shoe materials restrict its extended application in the shoe material field. Using TPU covered core yarn can effectively solve the problem of excessive shrinkage rate of TPU materials. There are few patent literatures reporting the application of TPU materials, especially TPU covered materials, in the warp knitted shoe material field. With the market demand and the improvement of living standards, people have higher and higher requirements for the texture and comfort of textile fabrics, and also have higher and higher requirements for the processing precision of mesh fabrics. At the same time, textile fabrics are also required to be fashionable and beautiful. There are already some formed textile fabrics on the existing market, but their single material and physical properties can no longer meet people's needs. Most of the warp knitted single-layer mesh fabrics knitted by current single-needle bed high-speed warp knitting machines are ordinary warp knitted mesh fabrics. TPU materials provide the improvement of physical properties and a sense of technology for the basic performance of shoe material fabrics, and have broad application space. The trend of transparency, light weight, and high elasticity of TPU materials is quite matched. Therefore, the future development potential of TPU in sports shoes is still inestimable. It is urgent to combine TPU technology materials and fashion to develop shoe materials that meet market demands. Summary of the Invention

[0003] Other features and advantages of the present application will be described in the following specification, and will become partially obvious from the specification, or be understood by implementing the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures specifically pointed out in the specification, claims, and other specification drawings.

[0004] The objective of the present application is to overcome the above deficiencies and provide a TPU core-spun yarn covered jacquard layer warp knitted mesh fabric and a manufacturing method thereof.

[0005] To achieve the above objective, the technical solution of the present application is:

[0006] A TPU core-spun yarn covered jacquard layer warp knitted mesh fabric includes surface and bottom yarns, bright yarns, and section-dyed polyester semi-dull low-elastic light mesh yarns. The bright black TPU core-spun yarn of the surface and bottom yarns is knitted through surface and bottom guide bars by using a chain stitch variable weft insertion organizational structure to form the ground tissue of the fabric. The jacquard yarns, bright yarns, and section-dyed polyester semi-dull low-elastic light mesh yarns are used to combine and knit the ground comb pattern knitting and the jacquard layer of the fabric through a guide bar for jacquard or a Jacquard guide bar by using a combination of organizational structures with a relatively small jacquard height and width range variable weft insertion and a relatively large jacquard height and width range variable weft insertion, and a TPU core-spun yarn covered jacquard layer warp knitted mesh fabric with the upper and lower surfaces being bright black TPU core-spun yarns is knitted.

[0007] Preferably, the ground comb pattern knitting and the Jacquard pattern knitting combs are partially cross-stitched, and the jacquard layer presents a special jacquard effect where the partial pattern is hidden or emerged. It is integrally knitted with good shape retention.

[0008] Preferably, the jacquard layer is knitted with two ordinary jacquard guide bars. One guide bar of the two ordinary jacquard guide bars uses polyester triangular cross-section bright yarn, and the other guide bar uses section-dyed polyester semi-dull low-elastic light net yarn.

[0009] Preferably, the jacquard layer is knitted with a Jacquard comb. The odd-numbered guide bars of the JB2.1 Jacquard comb use polyester triangular cross-section bright yarn, and the even-numbered guide bars of the JB2.2 Jacquard comb use section-dyed polyester semi-dull low-elastic light net yarn. The Jacquard jacquard yarn utilizes the offset of the basic chain block organization and the offset of the Jacquard signal, and realizes the jacquard effect through the odd-even misalignment and the same-position yarn laying of the half gauge method.

[0010] Preferably, on the surface of the warp knitted mesh fabric where the TPU core-spun yarn wraps the jacquard layer, there are section-dyed polyester semi-dull low-elastic light net yarn and bright yarn alternately displayed and hidden in the bright black core-spun TPU yarn. When hidden on one side of the extension yarn, an intermittent hidden effect and an exposed non-hidden bright color changing effect are knitted.

[0011] Preferably, the warp knitted mesh fabric of the jacquard layer wrapped with the TPU core-spun yarn is knitted with mesh holes on the coil surface. When the reflected light does not need to be displayed, the Jacquard yarn with reflection effect can be completely hidden. When the reflected light needs to be displayed, through the changing needle laying process of the Jacquard comb and the raw material matching of the odd-numbered guide bars and the even-numbered guide bars of the half gauge Jacquard comb, there are multiple colors of reflected light. When the bending angle of the fabric changes, since the visual angle also changes relatively, the polyester triangle bright yarn on the odd-numbered needles of the half gauge Jacquard is the main reflected light source; the section-dyed polyester semi-dull low-elastic light net yarn on the even-numbered needles of the half gauge Jacquard is the source of the reflected color of the reflected light, combined with the bright black of the core-spun TPU, not limited to regular and rigid refraction effects.

[0012] A manufacturing method of a warp knitted mesh fabric with a TPU core-spun yarn wrapping the jacquard layer, comprising the following steps:

[0013] (1) Prepare the required yarn materials for preparation;

[0014] (2) Wind the prepared yarn materials onto bobbins through a warping machine;

[0015] (3) Conduct the pattern process design of the warp knitted mesh fabric with a TPU core-spun yarn wrapping the jacquard layer;

[0016] (4) Start production and weaving;

[0017] (5) Dyeing, finishing and sizing.

[0018] Preferably, the above-mentioned yarn material is warped onto a beam by a Karl Mayer warping machine DS21 / 30EC2 made in Germany. The warping treatment steps are as follows:

[0019] ① When warping the 600D / 1F TPU core-spun yarn in bright black, the tension of the tension piece needs to be adjusted to 0. The yarn passes through the warping oil, and the warping speed is adjusted to 200 revolutions per minute. According to the process, 298 yarns are warped onto the beam.

[0020] ② When warping the polyester FDY (polyester filament) 300D / 96F bright, the tension of the tension piece needs to be adjusted to 6 - 8g. The yarn passes through the warping oil, and the warping speed is adjusted to 500 revolutions per minute. According to the process, 149 yarns are warped onto the beam.

[0021] ③ When warping the polyester DTY (polyester elastic yarn) 200D / 96F semi-dull low-elastic light net four-color segment-dyed yarn (white / purple / pink / green), the tension of the tension piece needs to be adjusted to 3 - 5g. The yarn passes through the warping oil, and the warping speed is adjusted to 300 revolutions per minute. According to the process, 149 yarns are warped onto the beam.

[0022] Preferably, the TPU core-spun yarn-coated jacquard warp knitted fabric is knitted by a single Jacquard warp knitting machine. The single Jacquard warp knitting machine is equipped with five guide bars, namely guide bar GB1, guide bar JB2.1, guide bar JB2.2, guide bar GB3, and guide bar GB4. The pattern process design of the TPU core-spun yarn-coated jacquard warp knitted fabric is as follows:

[0023] ① Guide bar GB1: Warping the 600D / 1F TPU core-spun yarn in bright black, with 298 yarns on each of the 6 beams. The threading method is full threading. The electronic let-off amount is 1250mm / rack. The laying-in digital is 0022 / 0033 / 2233. It combines with the ground guide bar GB3 in a chain stitch to form meshes, and the yarn content accounts for 26.353%.

[0024] ② Guide bar JB2.1: Warping the polyester FDY 300D / 96F triangular bright, with 149 yarns on each of the 6 beams. The threading method is one-in-one-out. The electronic let-off amount is 1200mm / rack. The basic laying-in digital is 00 / 22, and the yarn content accounts for 6.325%.

[0025] ③ Guide bar JB2.2: Warping the polyester DTY200D / 96F semi-dull low-elastic light net 4-color segment-dyed yarn (white / purple / pink / green), with 149 yarns on each of the 6 beams. The threading method is 1-in-1-out. The electronic let-off amount is 1160mm / rack. The basic laying-in digital is 00 / 22, and the yarn content accounts for 4.076%.

[0026] ④Combing bar GB3: Warping 600D / 1F TPU core-spun yarn, bright black, 298 yarns per beam for 6 beams, full insertion, electronic let-off amount 3000mm / rack, laying-in digital 10 / 01, yarn content 63.247%;

[0027] ⑤Combing bar GB4: Empty;

[0028] ⑥Through Jacquard signal control, the Jacquard sinker can be changed into a single-needle weft insertion of 11 / 22, clamped between GB1 and GB3 to be hidden;

[0029] ⑦Through Jacquard signal control, the Jacquard sinker can be changed into a three-needle weft insertion of 00 / 33, and its extension yarn is in the mesh holes woven by GB1 and GB3 to be displayed;

[0030] ⑧The guide needles of odd positions and even positions of the Jacquard combing bar can be separately controlled. When designing in CAD drawing, control signals are designed according to the bright yarn and section-dyed polyester semi-dull low-elastic light net yarn corresponding to the guide needles of odd positions and even positions, and various effects of reflected light can be reflected at different angles and positions such as separately hidden, separately displayed, combined hidden, and combined displayed.

[0031] Preferably, the woven grey fabric is pre-treated. To remove the mineral oil on the surface of the grey fabric, a degreasing agent of 0.5 - 2g / L is selected, and overflow washing is carried out in an overflow dyeing machine. Degreasing is carried out at 40 - 80°C to prevent fiber heat shrinkage. The degreasing time by water washing is 20 - 40min. Before discharging from the tank, the dosage of HAC acetic acid is 0.2 - 0.5g / L, and the pH value is adjusted to between 5 and 6. After discharging from the tank, dehydration is carried out. After the fabric spreading process, then heat setting is carried out, and the heat setting temperature range is 140°C - 160°C.

[0032] By adopting the above technical solutions, the beneficial effects of this application are:

[0033] By optimizing the structure and knitting method of the warp knitted fabric with a TPU core-spun yarn covered jacquard layer, this fabric can be used on either the front or the back, and different styles of special effects will be presented. On the extended yarn surface, the segment-dyed polyester semi-dull low-elastic light mesh yarn and bright yarn are alternately displayed and hidden inside the bright black core-spun TPU yarn. When hidden on one side of the extended yarn, an intermittent hidden effect and a revealed non-hidden bright color changing effect are knitted. On the loop surface of the product, mesh holes are knitted. When the reflected light does not need to be displayed, the jacquard yarn with a reflection effect can be completely hidden. When the reflected light needs to be displayed, through the changing needle laying process of the jacquard comb and the raw material matching of the guide yarn needles at odd positions and even positions of the half gauge jacquard comb, there are reflected lights of multiple colors. When the bending angle of the fabric surface changes, due to the relative change of the visual angle, the polyester triangle bright yarn on the odd needles of the half gauge jacquard is the main reflected light source; the segment-dyed polyester semi-dull low-elastic light mesh yarn on the even needles of the half gauge jacquard is the source of the reflected color of the reflected light, combined with the bright black of the core-spun TPU, not limited to regular and rigid refraction effects. By utilizing the characteristics of the ground comb knitting pattern and the local tissue cross-needle of the jacquard knitting comb, a special jacquard effect is designed where the jacquard layer has local patterns hidden or emerging. It is integrally knitted, with good shape retention, comfortable, beautiful and environmentally friendly in technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings are used to provide a further understanding of the present application and constitute a part of the specification. They are used together with the embodiments of the present application to explain the present application, but do not constitute a limitation to the present application.

[0035] In the drawings, the same components are denoted by the same reference numerals, and the drawings are schematic and not necessarily drawn to actual scale.

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only one or several embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on such drawings.

[0037] Figure 1 It is a schematic structural diagram of a warp knitted fabric with a TPU core-spun yarn covered jacquard layer according to the present application.

[0038] Main reference numeral description: 1. Segment-dyed yarn; 2. Bright yarn. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] In order to make the purpose, technical solutions and advantages of the present application more clear, the following further details the present application in combination with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0040] In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0041] In the present application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. However, indicating a direct connection means that there is no connection relationship constructed through a transition structure between the two connected main bodies, and they are only connected through the connection structure to form a whole. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] Refer to Figure 1 , Figure 1 , which is a schematic structural diagram of a warp knitted fabric with a TPU core-spun yarn covering a jacquard layer.

[0044] Figure 1 The horizontal dashed line in [reference figure] is the hidden segment-dyed yarn 1 shown, and the vertical one is the hidden segment-dyed yarn 1; the horizontal solid line is the bright yarn 2 shown, and the vertical one is the hidden segment-dyed yarn 1; the dashed line and the solid line that appear simultaneously horizontally are the common display of the segment-dyed yarn 1 and the bright yarn 2, and the dashed line and the solid line that appear simultaneously vertically are the common hiding of the segment-dyed yarn 1 and the bright yarn 2. Among them, the segment-dyed yarn 1 refers to the segment-dyed polyester semi-dull low-elastic light net yarn.

[0045] This embodiment provides a warp knitted mesh fabric with a TPU core-spun yarn covering jacquard layer, which includes face and bottom yarns, bright yarn 2, and section-dyed polyester semi-dull low-elastic light mesh yarn. The bright black TPU core-spun face and bottom yarns are knitted through face and bottom guide bars using a chain stitch with varying weft insertion structure to form the ground tissue of the fabric. The jacquard yarns, bright yarn 2 and section-dyed polyester semi-dull low-elastic light mesh yarn, are knitted through a jacquard guide bar or a Jacquard jacquard guide bar using a combination of structures with varying weft insertion in a smaller pattern height and width range and a larger pattern height and width range to knit the ground comb jacquard and the jacquard layer of the fabric, and a warp knitted mesh fabric with a TPU core-spun yarn covering jacquard layer with bright black TPU core-spun yarns on the upper and lower surfaces is knitted.

[0046] Based on the cross-needle characteristics of the local structures of the ground comb jacquard and the Jacquard jacquard, a special jacquard effect with local patterns hidden or emerging is designed, and it is integrally knitted with good shape retention.

[0047] The jacquard layer is knitted with two ordinary jacquard guide bars. One of the guide bars of the two ordinary jacquard guide bars uses polyester triangular cross-section bright yarn 2, and the other guide bar uses section-dyed polyester semi-dull low-elastic light mesh yarn.

[0048] The jacquard layer is knitted with a Jacquard jacquard guide bar. The guide bars at odd positions of the JB2.1 Jacquard comb use polyester triangular cross-section bright yarn 2, and the guide bars at even positions of the JB2.2 Jacquard comb use section-dyed polyester semi-dull low-elastic light mesh yarn. The Jacquard jacquard yarn uses the offset of the basic chain block organization and the offset of the Jacquard signal, and realizes the jacquard effect through the odd-even misalignment and the same-position yarn laying of the half gauge method.

[0049] On the extended surface of the warp knitted mesh fabric with a TPU core-spun yarn covering jacquard layer, section-dyed polyester semi-dull low-elastic light mesh yarn and bright yarn 2 are alternately shown and hidden in the bright black core-spun TPU yarn. When hidden on one side of the extended line, an intermittent hidden effect and a revealed non-hidden bright color-changing effect are knitted.

[0050] The warp knitted mesh fabric with a TPU core-spun yarn covering jacquard layer knits out mesh holes on the coil surface. When the reflected light does not need to be shown, the Jacquard yarn with a reflection effect can be completely hidden. When the reflected light needs to be shown, through the changing needle laying process of the Jacquard comb and the raw material matching of the guide bars at odd and even positions of the half gauge Jacquard comb, there are multiple colors of reflected light. When the bending angle of the fabric surface changes, since the visual angle also changes relatively, the polyester triangle bright on the odd needles of the half gauge Jacquard is the main reflected light source; the section-dyed polyester semi-dull low-elastic light mesh yarn on the even needles of the half gauge Jacquard is the source of the reflected color of the reflected light, and with the bright black of the core-spun TPU, it is not limited to regular and rigid refraction effects.

[0051] This embodiment also provides a manufacturing method of a warp knitted mesh fabric with a TPU core-spun yarn covering jacquard layer, including the following steps:

[0052] (1) Prepare the required yarn materials for preparation;

[0053] (2) Wind the prepared yarn materials onto bobbins through a warping machine.

[0054] (3) Conduct pattern process design for the warp knitted mesh fabric with a TPU core-spun yarn covering the jacquard layer.

[0055] (4) Start production and weaving.

[0056] (5) Dyeing and finishing for setting.

[0057] In this embodiment, the TPU core-spun yarn selected is 600D / 1F TPU core-spun yarn in bright black. The material is made of high-strength PET multifilament as the core yarn, accounting for 30%, with a Shore hardness of 85D, and 180° TPU material as the outer layer, accounting for 70%. In this embodiment, polyester FDY (polyester filament) 300D / 96F bright is selected. In this embodiment, polyester DTY (polyester elastic yarn) 200D / 96F semi-dull low-elastic light mesh four-color section-dyed yarn (white / violet / pink / green) is selected.

[0058] The above yarn materials are wound onto bobbins through the German KARL MAYER warping machine DS21 / 30EC2. The warping treatment steps are as follows:

[0059] ① When warping the 600D / 1F TPU core-spun yarn in bright black material, adjust the tension of the tension discs to 0. The yarn passes through warping oil, and the warping speed is adjusted to 200 revolutions per minute. Wind 298 yarns onto the bobbin according to the process.

[0060] ② When warping polyester FDY (polyester filament) 300D / 96F bright, adjust the tension of the tension discs to 6 - 8g. The yarn passes through warping oil, and the warping speed is adjusted to 500 revolutions per minute. Wind 149 yarns onto the bobbin according to the process.

[0061] ③ When warping polyester DTY (polyester elastic yarn) 200D / 96F semi-dull low-elastic light mesh four-color section-dyed yarn (white / violet / pink / green), adjust the tension of the tension discs to 3 - 5g. The yarn passes through warping oil, and the warping speed is adjusted to 300 revolutions per minute. Wind 149 yarns onto the bobbin according to the process.

[0062] The warp knitted mesh fabric with a TPU core-spun yarn covering the jacquard layer is woven by a single Jacquard warp knitting machine. This single Jacquard warp knitting machine is equipped with five guide bars, namely guide bar GB1, guide bar JB2.1, guide bar JB2.2, guide bar GB3, and guide bar GB4. The pattern process design of the warp knitted mesh fabric with a TPU core-spun yarn covering the jacquard layer is as follows:

[0063] ①Combing GB1: Warping 600D / 1F TPU core-spun yarn, bright black, 6 creels with 298 yarns per creel. The threading method is full threading. The electronic let-off amount is 1250 mm / rack. The guide bar notation is 0022 / 0033 / 2233, which combines with the ground comb GB3 in chain stitch to form a mesh. The yarn content accounts for 26.353%;

[0064] ②Combing JB2.1: Warping polyester FDY 300D / 96F triangular bright yarn, 6 creels with 149 yarns per creel. The threading method is one-in-one-out. The electronic let-off amount is 1200 mm / rack. The basic guide bar notation is 00 / 22. The yarn content accounts for 6.325%;

[0065] ③Combing JB2.2: Warping polyester DTY 200D / 96F semi-dull low-elastic light net 4-color segment-dyed yarn (white / purple / pink / green), 6 creels with 149 yarns per creel. The threading method is 1-in-1-out. The electronic let-off amount is 1160 mm / rack. The basic guide bar notation is 00 / 22. The yarn content accounts for 4.076%;

[0066] ④Combing GB3: Warping 600D / 1F TPU core-spun yarn, bright black, 6 creels with 298 yarns per creel. The threading method is full threading. The electronic let-off amount is 3000 mm / rack. The guide bar notation is 10 / 01. The yarn content accounts for 63.247%;

[0067] ⑤Combing GB4: Empty;

[0068] ⑥Through Jacquard signal control, the Jacquard sinker can be changed into 11 / 22 single-needle weft insertion, which is clamped between GB1 and GB3 to be hidden;

[0069] ⑦Through Jacquard signal control, the Jacquard sinker can be changed into 00 / 33 three-needle weft insertion, and its extension yarn is in the middle of the mesh woven by GB1 and GB3 to be displayed;

[0070] ⑧The guide bars of odd positions and even positions of the Jacquard comb can be controlled separately. When designing in CAD drawing, according to the bright yarn 2 corresponding to the guide bars of odd positions and even positions and the segment-dyed polyester semi-dull low-elastic light net yarn, design control signals, which can achieve different effects of reflected light at different angles and positions such as separate hiding, separate display, combined hiding, and combined display.

[0071] On the computer, use textile CAD software to edit the electronic CAD pattern of this TPU core-spun yarn covered jacquard layer warp knitted mesh according to the pattern process design, and import the generated pattern document into the control system of the single Jacquard jacquard warp knitting machine; Thread the yarns according to the design process requirements, input parameters on the single Jacquard jacquard warp knitting machine, and carry out knitting production.

[0072] ① CAD drawing design exports the computer file, the file format is "MC" format, copy and upload to the device end;

[0073] ② Download the pattern corresponding to the digital starting position of the inlay yarn.

[0074] The woven grey cloth is degreased with low-temperature water washing oil, the degreasing agent dosage is 0.5-2g / L, the degreasing temperature is 40-80℃, the water washing degreasing time is 20-40min, the pH value is adjusted to 5-6 with peracid before leaving the cylinder, the HAC acetic acid dosage is 0.2-0.5g / L, and the finished product is completed in one shaping, and the shaping temperature is 140℃-160℃.

[0075] Furthermore, the woven grey cloth was pre-treated to remove the mineral oil on the surface of the grey cloth using DeMei Chemical's low-temperature degreasing agent DM-1364 1g / L, and was washed with overflow water using LiXin TECWIN high-temperature overflow dyeing vat. The low-temperature degreasing was performed at 50°C to prevent the fiber from shrinking due to heat. The degreasing time was 20 minutes. Before leaving the vat, HAC 0.3g / L was used, and the pH value was adjusted to between 5 and 6. After leaving the vat, it was dehydrated and spread, and then heat-set, and the heat-setting temperature range was 140°C-160°C.

[0076] The upper and lower surface layers are bright black TPU core-spun yarn, which is introduced into the knitting needles for weaving with the surface and bottom yarn comb guide needles; the jacquard layer is woven with two ordinary jacquard combs or jacquard jacquard combs. The two ordinary jacquard combs use polyester triangular cross-section large glossy yarn 2 as the comb guide needle of one comb bar, and the other comb bar uses segment-dyed polyester semi-dull low-elastic light mesh yarn as the guide needle. The odd-numbered yarn guide needles of the JB2.1 jacquard comb bar use polyester triangular cross-section large glossy yarn 2, and the even-numbered yarn guide needles of the JB2.2 jacquard comb bar use segment-dyed polyester semi-dull low-elastic light mesh yarn. The jacquard jacquard yarn utilizes the basic chain block organization offset and the jacquard signal offset, and the jacquard effect is achieved through the half-machine number method to divide the odd and even staggered and co-located yarns. The face and bottom yarns are woven with a chain-woven variable weft insertion structure, and the jacquard yarn is woven with a jacquard comb with a smaller weft insertion structure with a smaller pattern height and width range or a jacquard comb with a larger weft insertion structure with a larger pattern height and width range.

[0077] It should be understood that the embodiments disclosed in this application are not limited to the specific structures disclosed herein, but should be extended to equivalent substitutions of such features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0078] The "embodiment" mentioned in the specification means that the specific features or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present application. Therefore, phrases or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0079] In addition, the described features or characteristics may be combined in any other suitable manner into one or more embodiments. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the present application. However, those skilled in the relevant art will understand that the present application can be implemented without one or more of the above specific details or can also be implemented using other structures, components, etc.

Claims

1. A warp knitted mesh fabric with a jacquard layer coated with TPU core-spun yarn, characterized in that, It includes face and bottom yarns, bright yarns, and section-dyed polyester semi-dull low-elastic light net yarns. The bright black TPU core-spun yarn of the face and bottom yarns passes through the face and bottom combs and is woven using a tricot stitch with changing weft insertion structure to form the ground tissue of the fabric. The jacquard yarns are bright yarns and section-dyed polyester semi-dull low-elastic light net yarns. Through the jacquard combs, a combination of structures with a relatively small range of change in pattern height and width and a relatively large range of change in pattern height and width for weft insertion is used to weave the ground comb pattern and the jacquard layer of the fabric, forming a warp-knitted net fabric with a TPU core-spun yarn-coated jacquard layer where the upper and lower surfaces are bright black TPU core-spun yarns. The local tissues of the ground comb pattern and the jacquard have cross needles, and the jacquard layer shows a special jacquard effect where the local patterns are hidden or emerge.

2. The core-spun yarn-covered jacquard layer warp knitted mesh fabric according to claim 1, characterized in that, The jacquard layer is woven with jacquard combs. The guide needles at odd positions of the JB2.1 jacquard comb use bright polyester yarn with a triangular cross-section, and the guide needles at even positions of the JB2.2 jacquard comb use section-dyed polyester semi-dull low-elastic light net yarns. The jacquard yarns utilize the offset of the basic chain block organization and the offset of the jacquard signals, and the jacquard effect is achieved through the odd-even misalignment and the same-position yarn laying of the half gauge method.

3. The TPU core-spun yarn-covered jacquard warp knitted mesh fabric according to claim 1, characterized in that, On the extension surface of the warp-knitted net fabric with a TPU core-spun yarn-coated jacquard layer, section-dyed polyester semi-dull low-elastic light net yarns and bright yarns are alternately shown and hidden within the bright black core-spun TPU yarns. When hidden on the extension surface, an intermittent hidden effect and a revealed non-hidden bright color-changing effect are woven.

4. The TPU core-spun yarn covered jacquard warp knitted mesh fabric according to claim 3, characterized in that, The warp-knitted net fabric with a TPU core-spun yarn-coated jacquard layer weaves out mesh holes on the coil surface. When there is no need to show the reflected light, the jacquard yarns with a reflection effect are completely hidden. When it is necessary to show the reflected light, through the changing needle laying process of the jacquard combs and the material matching of the guide needles at odd and even positions of the half gauge jacquard combs, there are multiple colors of reflected light. When the bending angle of the fabric surface changes, the bright polyester yarn with a triangular cross-section on the guide needles at odd positions of the half gauge jacquard comb is the source of the reflected light; the section-dyed polyester semi-dull low-elastic light net yarn on the guide needles at even positions of the half gauge jacquard comb is the source of the reflected color of the reflected light.

5. A manufacturing method of a TPU core-spun yarn-coated jacquard layer warp knitted mesh fabric as described in any one of claims 1-4, characterized in that, It includes the following steps: (1) Prepare the required yarn materials for preparation; (2) Perform beam warping on the prepared yarn materials through a warping machine; (3) Conduct the pattern process design of the warp-knitted net fabric with a TPU core-spun yarn-coated jacquard layer; (4) Start production and weaving; (5) Dyeing, finishing, and setting.

6. The manufacturing method of the warp knitted mesh fabric with a TPU core-spun yarn covering jacquard layer according to claim 5, characterized in that, The above-mentioned yarn materials are beam warped through a warping machine; ① When warping the 600D / 1F bright black TPU core-spun yarn material, the tension of the tension discs needs to be adjusted to 0. The yarn passes through the warping oil, and the warping speed is adjusted to 200 revolutions per minute. According to the process, 298 yarns are warped onto the beam; ② When warping the bright polyester FDY300D / 96F yarn with a triangular cross-section, the tension of the tension discs needs to be adjusted to 6 - 8 g. The yarn passes through the warping oil, and the warping speed is adjusted to 500 revolutions per minute. According to the process, 149 yarns are warped onto the beam; ③ When warping the polyester DTY200D / 96F semi-dull low-elastic light net four-color section-dyed yarn, the tension of the tension discs needs to be adjusted to 3 - 5 g. The yarn passes through the warping oil, and the warping speed is adjusted to 300 revolutions per minute. According to the process, 149 yarns are warped onto the beam.

7. The manufacturing method of the TPU core-spun yarn-covered jacquard layer warp knitted mesh fabric according to claim 6, characterized in that, The TPU core-spun yarn covered jacquard warp knitted fabric is knitted by a single jacquard warp knitting machine. The single jacquard warp knitting machine is equipped with five guide bars, namely guide bar GB1, jacquard guide bar JB2.1, jacquard guide bar JB2.2, guide bar GB3 and guide bar GB4. The pattern process design of the TPU core-spun yarn covered jacquard warp knitted fabric is as follows: ① Guide bar GB1: Warping 600D / 1F bright black TPU core-spun yarn, 6 creels with 298 yarns per creel. The threading mode is full threading. The electronic let-off amount is 1250mm / rack. Its laying-in digital is 0022 / 0033 / 2233. It combines with the ground guide bar GB3 in chain stitch to form mesh holes. Its yarn content accounts for 26.353%; ② Jacquard guide bar JB2.1: Warping polyester FDY 300D / 96F triangular bright yarn, 6 creels with 149 yarns per creel. The threading mode is one-in-one-out. The electronic let-off amount is 1200mm / rack. The basic laying-in digital is 00 / 22. Its yarn content accounts for 6.325%; ③ Jacquard guide bar JB2.2: Warping polyester DTY200D / 96F semi-dull low-elastic light net 4-color section-dyed yarn, 6 creels with 149 yarns per creel. The threading mode is: 1-in-1-out. The electronic let-off amount is 1160mm / rack. The basic laying-in digital is 00 / 22. Its yarn content accounts for 4.076%; ④ Guide bar GB3: Warping 600D / 1F bright black TPU core-spun yarn, 6 creels with 298 yarns per creel. The threading mode is full threading. The electronic let-off amount is 3000mm / rack. The laying-in digital is 10 / 01. Its yarn content accounts for 63.247%; ⑤ Guide bar GB4: Left empty; ⑥ Through jacquard signal control, the jacquard needle can be changed into a single-needle weft insertion of 11 / 22, clamped between GB1 and GB3 to hide it; ⑦ Through jacquard signal control, the jacquard needle can be changed into a three-needle weft insertion of 00 / 33. Its extension yarn is in the middle of the mesh holes knitted by GB1 and GB3 to display it; ⑧ The odd-numbered guide needles of the jacquard guide bar and the even-numbered guide needles of the jacquard guide bar can be separately controlled. When designing in CAD drawing, design the control signals according to the bright yarn and section-dyed polyester semi-dull low-elastic light net yarn corresponding to the odd-numbered guide needles and even-numbered guide needles. It can achieve the effects of separate hiding, separate display, combined hiding and combined display, reflecting various reflected lights at different angles and positions.

8. The manufacturing method of the TPU core-spun yarn-covered jacquard layer warp knitted mesh fabric according to claim 5, characterized in that, The woven grey fabric is pre-treated. To remove the mineral oil on the surface of the grey fabric, a degreasing agent of 0.5 - 2g / L is selected. Use an overflow dyeing machine for overflow water washing. Degrease at 40 - 80°C to prevent fiber heat shrinkage. The water washing and degreasing time is 20 - 40min. Before discharging from the tank, use 0.2 - 0.5g / L of HAC acetic acid to adjust the pH value to between 5 - 6. After discharging from the tank, perform dehydration and spreading processes, and then heat setting. The heat setting temperature range is 140°C - 160°C.

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