Local single-layer warp knitting concave-convex fabric and production method thereof

Abstract

The invention relates to a local single-layer warp-knitted concave-convex fabric and a production method thereof, and belongs to the technical field of textile, and the local single-layer warp-knitted concave-convex fabric comprises concave structure units and convex structure units; the concave structure unit comprises a single-layer fabric part, the convex structure unit comprises a multi-layer spacer fabric part, the multi-layer spacer fabric part comprises a first surface layer, a spacer layer and a second surface layer, the spacer layer is located between the first surface layer and the second surface layer, and the spacer layer is connected with the first surface layer and the second surface layer; at least part of the concave structure units and the convex structure units are connected. The warp-knitted concave-convex fabric with the single-layer fabric part and the multi-layer fabric part can be formed at the same time, the safety and practicability of the warp-knitted concave-convex fabric are improved, and market requirements and market prospects are met.

Description

Technical Field

[0001] The invention belongs to the technical field of weaving, and in particular relates to a partially single-layer warp-knitted concave-convex fabric and a production method thereof. Background Art

[0002] Warp knitted fabrics usually include single-layer single-face fabrics and multi-layer spacer fabrics. With the improvement of people's living standards, there are higher requirements for the comfort, functionality (breathability, cushioning, etc.) and aesthetics of warp knitted fabrics. For example, for the material used for the upper, the wearer hopes that the multi-layer spacer fabric area of ​​the fabric has a certain thickness to protect the feet during walking and running, and hopes that the single-layer fabric area of ​​the fabric can meet the breathability requirements of the walking process; for another example, for the covering fabrics used for electronic products such as mobile phones, the wearer hopes that the multi-layer spacer fabric area with a certain thickness can play a certain protective role when the electronic products fall due to its cushioning elasticity, and hopes that the single-layer fabric area of ​​the fabric can better play a role in heat dissipation. Therefore, the warp knitted fabric that integrates single-layer fabric and multi-layer spacer fabric not only enriches the category of warp knitted fabrics, but also has broad market application prospects.

[0003] Warp knitted fabrics present a concave-convex effect, which can enhance decorativeness, improve touch, breathability, cushioning, etc. There are usually two ways to form a concave-convex effect on warp knitted fabrics: the first way is that the warp knitted fabric uses elastic materials, and the elastic raw materials shrink to make the fabric arch up, so that the whole warp knitted fabric presents a certain concave-convex effect, or the elastic raw materials shrink to press the fabric with a certain thickness to produce a quilting effect, so that the fabric visually presents a style of varying thickness; the second way is that the comb bar adopts empty penetration, so that in the width direction, some sections are single-layer fabric areas, and some sections are multi-layer spacer fabric areas. At the same time, by increasing the spacing thickness of the multi-layer spacer fabric, a high-contrast concave-convex effect can be formed, but the concave-convex effect is only in the width direction, and the width of each section is the same in the weaving direction. The concave-convex effect formed by the combination of single-layer fabric and multi-layer spacer fabric cannot be achieved in the weaving direction of the fabric. Summary of the invention

[0004] The present invention application proposes a partially single-layer warp knitted concave-convex fabric and a production method thereof, aiming to partially or completely solve the technical problem that the double needle bed groove needle warp knitting machine without jacquard in the prior art cannot currently realize the combination of a single-layer fabric and a multi-layer spacer fabric in the weaving direction of the fabric to form a large-contrast concave-convex effect. The technical solution of the present invention application is as follows:

[0005] In the first aspect, a partially single-layer warp-knitted concave-convex fabric comprises: a concave structural unit and a convex structural unit; the concave structural unit comprises a single-layer fabric portion, the convex structural unit comprises a multi-layer spacer fabric portion, the multi-layer spacer fabric portion comprises a first surface layer, a spacer layer and a second surface layer, the spacer layer is located between the first surface layer and the second surface layer, and the spacer layer connects the first surface layer and the second surface layer; at least part of the concave structural unit and the convex structural unit are connected.

[0006] Optionally, along the thickness direction of the fabric, the thickness range of the spacer layer is 1.2mm-800mm, the spacer layer includes spacer wires, and the spacer wires are 20D-400D yarns; the raw material of the first surface layer comes from one or more of polyester, nylon, polyester-spandex core-spun yarn, and nylon-spandex core-spun yarn, and the raw material of the second surface layer comes from one or more of polyester, nylon, polyester-spandex core-spun yarn, and nylon-spandex core-spun yarn.

[0007] Optionally, a plurality of concave structural units are provided, and a plurality of convex structural units are provided, and along the thickness direction of the fabric, the thicknesses of the plurality of concave structural units are not completely the same, and the thicknesses of the plurality of convex structural units are not completely the same.

[0008] In a second aspect, a method for producing a partially single-layer warp knitted concave-convex fabric is provided, wherein the method comprises:

[0009] Step S100: according to the pattern of the warp knitted concave-convex fabric, the number of warping heads of each guide bar of the double needle bed groove needle warp knitting machine without jacquard and the number of head grains of each guide bar are calculated, and warping is performed on the warping machine;

[0010] Step S200: Weaving on a double-needle-bed groove needle warp knitting machine without jacquard, forming a plurality of concave structural units and a plurality of convex structural units along the weaving direction of the fabric, at least some of the concave structural units and the convex structural units are connected, the convex structural units include a multi-layer spacer fabric portion, and the concave structural units include a single-layer fabric portion, thereby obtaining a warp knitted concave-convex fabric grey cloth;

[0011] Step S300: pre-forming, dyeing and post-forming the warp knitted concave-convex fabric grey cloth to form a finished warp knitted concave-convex fabric.

[0012] Optionally, step SF is also included before step S100: at least based on the width, number of widths, horizontal density and pattern of the finished warp knitted concave and convex fabric, a double needle bed groove needle warp knitting machine without jacquard, which includes at least a first comb bar, a second comb bar and a third comb bar, is selected for weaving, and at least the machine width, machine gauge and number of comb bars of the double needle bed groove needle warp knitting machine without jacquard are selected.

[0013] Optionally, in step S200, the multi-layer spacer fabric portion includes a first surface layer, a spacer layer and a second surface layer, the spacer layer is located between the first surface layer and the second surface layer, and the spacer layer connects the first surface layer and the second surface layer; each comb bar of the double needle bed groove needle warp knitting machine without jacquard threads the yarn according to the threading rule, and all comb bars form loops on the single-side needle bed to form a single-layer fabric portion; for the multi-layer spacer fabric portion, at least one first comb bar only weaves the first surface layer on the front needle bed, at least one second comb bar only weaves the second surface layer on the rear needle bed, and at least one third comb bar weaves the yarn on both the front needle bed and the rear needle bed to connect the first surface layer and the second surface layer to form a spacer layer.

[0014] Optionally, in step S200, along the width direction of the fabric, the width of the concave structural unit and the width of the convex structural unit are at least jointly determined by the number of warp threadings of the double needle bed groove needle warp knitting machine without jacquard, the number of transverse needles, the machine gauge, and the fabric shrinkage rate.

[0015] Optionally, in step S200, along the weaving direction of the fabric, the length of the concave structural unit is determined by the number of horizontal rows in which all the combing bars form loops on the single-side needle bed, the longitudinal density of weaving and the longitudinal shrinkage of the fabric; the length of the convex structural unit is determined at least by the number of horizontal rows in which the corresponding combing bars form loops on the front needle bed and the rear needle bed, the longitudinal density of weaving and the longitudinal shrinkage of the fabric.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0017] (1) In the present invention, the warp knitted concave-convex fabric includes a concave structural unit and a convex structural unit, the convex structural unit includes a multi-layer spacer fabric portion, the concave structural unit includes a single-layer fabric portion, and at least part of the concave structural unit and the convex structural unit are connected. In this way, by connecting at least part of the concave structural unit and the convex structural unit, a warp knitted concave-convex fabric having both a single-layer fabric portion and a multi-layer fabric portion can be formed in an integrated manner, making the warp knitted concave-convex fabric more durable and less prone to loosening, thereby improving the safety and practicality of the warp knitted concave-convex fabric and meeting market demand and market prospects.

[0018] (2) In the present application, the production method of the partially single-layer warp knitted concave-convex fabric can form a single-layer fabric portion and a multi-layer spacer fabric portion to meet different functional requirements in daily life. For example, the single-layer fabric portion can provide the required light and thin, close-fitting functions, and the multi-layer spacer fabric portion can provide cushioning, support and other functions; each comb is threaded according to the warp threading rule and knitted on a double needle bed groove needle warp knitting machine without jacquard, which can directly weave the fabric without sewing, reduce production errors, improve production efficiency, and ensure the stability of product quality. The weaving method of the comb can also be flexibly adjusted to create a variety of warp knitted concave-convex fabrics with different appearances and performances, meeting the diverse requirements of fashion and functional design;

[0019] (3) In the present application, the spacer layer is located between the first surface layer and the second surface layer, and the spacer layer connects the first surface layer and the second surface layer, and also forms a warp knitted concave convex fabric with a local multi-layer fabric portion and a large contrast concave convex effect, thereby enhancing the three-dimensional sense and hand feel of the warp knitted concave convex fabric, so that the warp knitted concave convex fabric has one or more of the functions of pressure resistance, breathability, and cushioning, and can also form a solid color or multi-color three-dimensional pattern effect, meeting the market demand for the fashion and beauty of fabrics. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic structural diagram of a partially single-layer warp-knitted concave-convex fabric A applied for by the present invention;

[0022] Figure 2 This is a schematic structural diagram of a partially single-layer warp-knitted concave-convex fabric B applied for by the present invention;

[0023] Figure 3 This is a schematic structural diagram of a partially single-layer warp-knitted concave-convex fabric C applied for by the present invention;

[0024] Figure 4 A schematic diagram of a process for producing a partially single-layer warp knitted concave-convex fabric of the present application;

[0025] Figure 5 A schematic diagram of the movement of yarns of each combing bar of a partially single-layer warp-knitted concave-convex fabric A applied for by the present invention;

[0026] Figure 6 A schematic diagram of the movement of yarns of each combing bar of a partially single-layer warp-knitted concave-convex fabric B applied for by the present invention;

[0027] Figure 7 This is a schematic diagram of the movement of the yarns of each combing bar of a partially single-layer warp-knitted concave-convex fabric C applied for by the present invention.

[0028] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is one or two or more than two, unless otherwise clearly and specifically defined.

[0032] In the present application, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral molding, or an integration; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clear, the implementation methods of the present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Example description of partially single-layer warp knitted concave-convex fabric

[0035] like Figures 1 to 3As shown, in the first aspect, a partially single-layer warp-knitted concave-convex fabric comprises: a concave structure unit 100 and a convex structure unit 200; the concave structure unit 100 comprises a single-layer fabric portion; the convex structure unit 200 comprises a multi-layer spacer fabric portion, the multi-layer spacer fabric portion comprises a first surface layer, a spacer layer and a second surface layer, the spacer layer is located between the first surface layer and the second surface layer, and the spacer layer connects the first surface layer and the second surface layer; at least part of the concave structure unit 100 and the convex structure unit 200 are connected.

[0036] In a partially single-layer warp knitted concave-convex fabric of the present invention, first, the warp knitted concave-convex fabric includes a concave structure unit 100 and a convex structure unit 200. The concave structure unit 100 includes a single-layer fabric portion, the convex structure unit 200 includes a multi-layer spacer fabric portion, and at least part of the concave structure unit 100 and the convex structure unit 200 are connected, which may mean: along the weaving direction of the fabric (for example, it may be the X direction), at least part of the concave structure unit 100 and the convex structure unit 200 are connected; and / or, along the width direction of the fabric (for example, it may be the Y direction), at least part of the concave structure unit 100 and the convex structure unit 200 are connected. In this way, by connecting at least part of the concave structural units and the convex structural units, a warp knitted concave convex fabric with both a single-layer fabric portion and a multi-layer fabric portion can be formed in an integrated manner, making the warp knitted concave convex fabric more durable and not easy to loosen, thereby improving the safety and practicality of the warp knitted concave convex fabric and meeting market demand and market prospects; in addition, the spacer layer is located between the first surface layer and the second surface layer, and the spacer layer connects the first surface layer and the second surface layer, forming a warp knitted concave convex fabric with a local multi-layer fabric portion and a large contrast concave convex effect, thereby enhancing the three-dimensional sense and feel of the warp knitted concave convex fabric, so that the warp knitted concave convex fabric has one or more of the functions of pressure resistance, breathability, and cushioning, and can also form a solid color or multi-color three-dimensional pattern effect, meeting the market demand for the fashion and beauty of fabrics.

[0037] Optionally, along the thickness direction of the fabric, the thickness range of the spacer layer is 1.2mm-800mm, the spacer layer includes spacer wires, and the spacer wires are 20D-400D yarns; the raw material of the first surface layer comes from one or more of polyester, nylon, polyester-spandex core-spun yarn, and nylon-spandex core-spun yarn, and the raw material of the second surface layer comes from one or more of polyester, nylon, polyester-spandex core-spun yarn, and nylon-spandex core-spun yarn.

[0038] In the present application, the thickness direction of the fabric (for example, it can be the Z direction) and the thickness range of the spacer layer are 1.2mm to 800mm, which provides a wide range of application scenarios for warp knitted concave and convex fabrics, and can meet the needs from light and thin to heavy. 20D-400D yarns are used as spacer yarns to ensure the stability and strength of the spacer layer, which is suitable for various pressures and usage environments. The first surface layer and the second surface layer can both use one or more of polyester, nylon, polyester-spandex core-spun yarn, and nylon-spandex core-spun yarn. Polyester, nylon, polyester-spandex core-spun yarn, and nylon-spandex core-spun yarn have good wear resistance, elasticity and chemical stability, making the fabric suitable for various environments and uses. The good wear resistance, tear resistance and recovery of the fabric make the fabric more durable and can be used to make various fabric products.

[0039] Optionally, a plurality of concave structure units 100 are provided, and a plurality of convex structure units 200 are provided. Along the thickness direction of the fabric, the thicknesses of the plurality of concave structure units 100 are not completely the same, and the thicknesses of the plurality of convex structure units 200 are not completely the same.

[0040] In the present application, at least some of the concave structure units 100 and the convex structure units 200 can be adjacent and connected, or at least some of the concave structure units 100 and the convex structure units 200 can be arranged alternately and connected; along the thickness direction of the fabric (for example, it can be the Z direction), the thickness of the concave structure units 100 and the convex structure units 200 are different, and an obvious concave-convex effect is formed on the surface of the fabric, and a large-contrast concave-convex effect can be obtained, which increases the visual three-dimensional sense and aesthetics; units of different thicknesses can be adjusted according to design requirements, so that the fabric can adapt to different application scenarios; the concave structure units can increase the air circulation between the fabric and the skin, and improve the comfort of wearing or using. Multiple concave structure units 100 and convex structure units 200 of different thicknesses may help to improve the mechanical properties of the fabric, such as tensile and compression resistance.

[0041] In some embodiments, along the width direction of the fabric (for example, it can be the Y direction), the widths of multiple concave structure units 100 are exactly the same or not exactly the same, and the widths of multiple convex structure units 200 are exactly the same or not exactly the same. Along the weaving direction of the fabric (for example, it can be the X direction), the lengths of multiple concave structure units 100 are exactly the same or not exactly the same, and the lengths of multiple concave structure units 200 are exactly the same or not exactly the same.

[0042] In some embodiments, the X direction, the Y direction, and the Z direction intersect each other. Preferably, the X direction, the Y direction, and the Z direction may be perpendicular to each other and form an angle of 90 degrees. The X direction may mean the weaving direction of the fabric, the Y direction may mean the width direction of the fabric, and the Z direction may mean the thickness direction of the fabric.

[0043] Exemplary description of the production method of a partially single-layer warp knitted concave-convex fabric

[0044] like Figure 4 As shown, in the second aspect, a method for producing a partially single-layer warp knitted concave-convex fabric, producing any one of the partially single-layer warp knitted concave-convex fabrics described in the first aspect, comprising the following steps:

[0045] Step S100: according to the pattern of the finished warp knitted concave-convex fabric, the number of warping heads of each guide bar of the double needle bed groove needle warp knitting machine without jacquard and the number of head grains of each guide bar are calculated, and warping is performed on the warping machine;

[0046] Step S200: Weaving with a double-needle-bed groove needle warp knitting machine without jacquard to form a plurality of concave structure units 100 and a plurality of convex structure units 200 along the weaving direction of the fabric; at least part of the concave structure units 100 and the convex structure units 200 are connected, the convex structure units 200 include a multi-layer spacer fabric portion, and the concave structure unit 100 includes a single-layer fabric portion, thereby obtaining a warp knitted concave-convex fabric grey cloth;

[0047] Step S300: pre-forming, dyeing and post-forming the warp knitted concave-convex fabric grey cloth to form a finished warp knitted concave-convex fabric.

[0048] In a production method of a partially single-layer warp-knitted concave-convex fabric applied for by the present invention, firstly, in the production process of the partially single-layer warp-knitted concave-convex fabric, the process links (such as production process parameters, etc.) in the warping step of the warping machine, the weaving step of the double-needle bed groove needle warp knitting machine without jacquard, and the shaping and dyeing step can be individually adjusted and controlled. For example, in the warping step of the warping machine, the number of warping heads and the number of head patterns of each comb can be calculated, and the warping can be accurately performed on the warping machine to ensure the consistency and quality of the finished product. The production method as a whole can reduce errors and waste in the production process, and through the pre-shaping, dyeing, and post-shaping steps, the feel, color uniformity and dimensional stability of the fabric can be improved, the appearance quality and performance of the finished product can be improved, and the production efficiency and The yield rate of the fabric; in addition, the warp-knitted concave-convex fabric includes a concave structure unit 100 and a convex structure unit 200, the convex structure unit 200 includes a multi-layer spacer fabric portion, the concave structure unit 100 includes a single-layer fabric portion, and along the weaving direction of the fabric can also mean: at least along the weaving direction of the fabric, which can also include along the weaving direction of the fabric and along the width direction of the fabric, and at least part of the concave structure unit 100 and the convex structure unit 200 are connected, which can also mean: along the weaving direction of the fabric (for example, it can be the X direction), at least part of the concave structure unit 100 and the convex structure unit 200 are connected; and / or, along the width direction of the fabric (for example, it can be the Y direction), at least part of the concave structure unit 100 and the convex structure unit 200 are connected. In this way, by connecting at least part of the concave structure unit 100 and the convex structure unit 200, a warp knitted concave convex fabric having both a single-layer fabric portion and a multi-layer fabric portion can be integrated to enhance the three-dimensional sense and visual effect of the fabric, making the warp knitted concave convex fabric more durable and less prone to loosening, thereby improving the safety and practicality of the warp knitted concave convex fabric and meeting market demand and market prospects.

[0049] Optionally, step SF is also included before step S100: at least based on the width, number of widths, horizontal density and pattern of the finished warp knitted concave and convex fabric, a double needle bed groove needle warp knitting machine without jacquard, which includes at least a first comb bar, a second comb bar and a third comb bar, is selected for weaving, and at least the machine width, machine gauge and number of comb bars of the double needle bed groove needle warp knitting machine without jacquard are selected.

[0050] In the present invention application, a double-needle-bed groove needle warp knitting machine without jacquard and its parameters are selected according to the width, number of widths, horizontal density and pattern of the finished fabric, which can ensure that the machine is highly compatible with the product requirements, thereby improving production efficiency and product quality; reasonable machine configuration helps to simplify the production process, reduce unnecessary adjustments and downtime, improve production continuity and stability, and make the subsequent weaving process smoother; different machine gauges and numbers of comb bars can adapt to different pattern designs, and can create warp knitted concave and convex fabrics with complex patterns and structures, making the products more diversified, increasing the market competitiveness of the products, and meeting the market demand for personalized products.

[0051] Optionally, in step S200, the multi-layer spacer fabric portion includes a first surface layer, a spacer layer and a second surface layer, the spacer layer is located between the first surface layer and the second surface layer, and the spacer layer connects the first surface layer and the second surface layer; each comb bar of the double needle bed groove needle warp knitting machine without jacquard threads the yarn according to the threading rule, and all comb bars form loops on the single-side needle bed to form a single-layer fabric portion; for the multi-layer spacer fabric portion, at least one first comb bar only weaves the first surface layer on the front needle bed, at least one second comb bar only weaves the second surface layer on the rear needle bed, and at least one third comb bar weaves the yarn on both the front needle bed and the rear needle bed to connect the first surface layer and the second surface layer to form a spacer layer.

[0052] In the present application, firstly, the warp knitted concave convex fabric grey cloth is formed with a single-layer fabric portion and a multi-layer spacer fabric portion, which can meet different functional requirements. For example, the single-layer fabric portion can provide the required light and close-fitting functions, and the multi-layer spacer fabric portion can provide cushioning, support and other functions; each comb bar is threaded according to the warp threading rule and knitted on a double needle bed groove needle warp knitting machine without jacquard, which can directly weave the fabric without stitching, reduce production errors, improve production efficiency, ensure the stability of product quality, and can also flexibly adjust the weaving method of the comb bar to create a variety of warp knitted concave convex fabrics with different appearances and performances to meet the diverse requirements of fashion and functional design; in addition, the spacer layer is woven with yarn on the front needle bed and the rear needle bed. This flexible and diverse weaving method makes the production process more flexible and can be adjusted according to different design requirements and production conditions; at the same time, different weaving positions can adjust the spacer yarn density and fabric thickness, thereby optimizing the connection strength and stability between the spacer layer and the surface layer, and improving the cushioning performance of the multi-layer spacer fabric.

[0053] Optionally, in step S200, along the width direction of the fabric, the width of the concave structure unit 100 and the width of the convex structure unit 200 are at least jointly determined by the number of warps passed through the comb of the double needle bed groove needle warp knitting machine without jacquard, the number of transverse needles, the machine gauge, and the fabric shrinkage rate.

[0054] In the present application, in step S200, the widths of the concave structure unit 100 and the convex structure unit 200 are determined based on the number of bar threadings, the number of transverse needles, the machine gauge and the fabric shrinkage of the double needle bed groove needle warp knitting machine without jacquard, so that the width dimension can be controlled, and it can be ensured that the concave-convex structure dimensions of the fabric in the width direction meet the design expectations, and the production process is more standardized and repeatable, reducing errors caused by human factors or other uncertain factors, and ensuring the stability of product quality. At the same time, by adjusting and optimizing these parameters, concave-convex structures of different widths can be created to obtain concave-convex effects of different contrasts, providing rich changes for fabric design and meeting specific or diversified market needs.

[0055] Optionally, in step S200, along the weaving direction of the fabric, the length of the concave structural unit is determined by the number of horizontal rows in which all the combing bars form loops on the single-side needle bed, the longitudinal density of weaving and the longitudinal shrinkage of the fabric; the length of the convex structural unit is determined at least by the number of horizontal rows in which the corresponding combing bars form loops on the front needle bed and the rear needle bed, the longitudinal density of weaving and the longitudinal shrinkage of the fabric.

[0056] In the present application, in step S200, by adjusting the number of yarn loops of the comb on the front and rear needle beds, the longitudinal density of weaving and the longitudinal shrinkage of the fabric, the length of the concave structure unit 100 and the convex structure unit 200 can be accurately controlled to achieve the three-dimensional effect required by the design. Accurate design and control can reduce errors and waste in production, and improve production efficiency and the yield of fabrics.

[0057] Partially single-layer warp knitted concave-convex fabric A, partially single-layer warp knitted concave-convex fabric B and partially single-layer warp knitted concave-convex fabric Example description of the production method of material C

[0058] Taking three types of partially single-layer warp knitted convex fabrics as examples, namely partially single-layer warp knitted convex fabric A, partially single-layer warp knitted convex fabric B and partially single-layer warp knitted convex fabric C, the following specifically introduces the production methods of partially single-layer warp knitted convex fabric A, partially single-layer warp knitted convex fabric B and partially single-layer warp knitted convex fabric C.

[0059] (1) Production method of partially single-layer warp knitted concave-convex fabric A

[0060] like Figure 1 , Figure 5 As shown, the partially single-layer warp-knitted concave-convex fabric A includes: a finished width of 142 cm, 2 woven cloths, a horizontal density of 11 wpc, a pattern including concave-convex horizontal stripes, and a single-layer fabric portion including thick plain cloth.

[0061] Step SFA: at least according to the width, number of pieces, horizontal density and pattern of the finished warp knitted concave-convex fabric A, select a double needle bed groove needle warp knitting machine RD7 without jacquard, machine gauge E24, 140 inches, 7 guide bars, 3 guide bars actually used, and a knock-over plate distance of 3.5 mm;

[0062] Step S100A: According to the pattern of the local single-layer warp-knitted concave-convex fabric A and the drawing-in process of each guide bar, GB1, GB2, GB6, and GB7 do not need warping, and the warping parameters of GB3, GB4, and GB5 are as follows: GB3: 528*6A, GB4: 528*6B, GB5: 528*6C, A: 200D / 96F polyester DTY, B: 30D polyester monofilament, C: 150D / 48F polyester cationic.

[0063] Step S200A: Weaving on a double needle bed groove needle warp knitting machine RD7 without jacquard, with a pattern height of 24 horizontal rows, a pattern width of 6 vertical rows, a machine density of 16 cpc, and empty threading of the combing bars GB1, GB2, GB6, and GB7, and full threading of the combing bars GB3, GB4, and GB5. In the 1st to 6th horizontal rows, the combing bars GB3, GB4, and GB5 all form loops on the mattress yarn of the front needle bed, and the combing bars GB3 and GB5 form loops symmetrically in opposite directions to form a concave structural unit 101A (100); in the 7th to 12th horizontal rows, GB3 forms loops only on the mattress yarn of the front needle bed, GB4 forms loops on both the front and rear needle beds, and GB5 forms loops only on the mattress yarn of the rear needle bed, forming a convex structural unit 201A (200); in the 13th to 18th horizontal rows, the combing bars GB3, GB4, and GB5 all form loops on the mattress yarn of the rear needle bed, forming a concave structural unit 102A (100); In the 19th to 24th horizontal rows, GB3 forms a loop only on the front needle bed, GB4 forms a loop on both the front and rear needle beds, and GB5 forms a loop only on the back needle bed, forming a convex structure unit 202A (200), and the double needle bed groove needle warp knitting machine RD7 without jacquard continues to perform weaving operations according to a preset rule, and along the weaving direction of the fabric, a plurality of concave structure units 100 and a plurality of convex structure units 200 are formed; along the weaving direction of the fabric, at least part of the concave structure units 100 and the convex structure units 200 are connected; the concave structure unit 100 includes a single-layer fabric portion, and the convex structure unit 200 includes a multi-layer spacer fabric portion, thereby obtaining a warp knitted concave-convex fabric grey cloth; wherein the weaving parameters (comb bar, inlay yarn number, threading parameters) of the double needle bed groove needle warp knitting machine RD7 without jacquard at least include:

[0064]

[0065] Step S300A: pre-forming, dyeing, and post-forming the warp knitted concave-convex fabric grey cloth to form a finished warp knitted concave-convex fabric A.

[0066] (2) Production method of partially single-layer warp knitted concave-convex fabric B

[0067] like Figure 2 , Figure 6 As shown, the partially single-layer warp-knitted concave-convex fabric B includes: a finished width of 142 cm, 2 woven fabrics, a horizontal density of 11 wpc, a pattern including lines, a single-layer fabric portion including a mesh structure, and convex structure units of different widths.

[0068] Step SFB: at least according to the width, number of pieces, horizontal density and pattern of the finished warp knitted concave-convex fabric B, select a double needle bed groove needle warp knitting machine RD7 without jacquard, machine gauge E24, 140 inches, 7 guide bars, the actual number of guide bars used is 6, and the distance between the knock-over plates is 3 mm;

[0069] Step S100B: According to the pattern of the local single-layer warp-knitted concave-convex fabric B and the warping process of each combing bar, GB1 does not need warping, and the warping parameters of GB2, GB3, GB4, GB5, GB6, and GB7 are as follows: GB2: 110*6A, GB3: 110*6A, GB4: 110*6B, GB5: 110*6B, GB6: 396*6C, GB7: 396*6C, A: 150D / 48F polyester black yarn, B: 150D / 48F polyester cationic, C: 30D polyester monofilament.

[0070] Step S200B: weaving on a double needle bed groove needle warp knitting machine RD7 without jacquard, with a pattern height of 30 horizontal rows, a pattern width of 24 vertical rows, and a machine density of 15.4 cpc. Combs GB2 and GB3 follow a certain threading rule and only form loops on the front needle bed. Combs GB4 and GB5 thread yarns according to a certain rule and alternately thread yarns on the front and rear needle beds to form loops. Combs GB6 and GB7 thread three yarns and one empty yarn and only form loops on the rear needle bed to form a mesh structure. The convex structure unit 201B (200) is woven by GB2, GB3, GB4, GB5, GB6, and GB7, and the concave structure unit 101B (100) is woven by combs GB2, GB3, GB4, GB5, GB6, and GB7. The combs GB6 and GB7 are knitted into loops on the back needle bed yarns, and the double needle bed groove needle warp knitting machine RD7 without jacquard continues to perform weaving operations according to the preset rules, and along the weaving direction of the fabric, a plurality of concave structure units 100 and a plurality of convex structure units 200 are formed, and at least some of the concave structure units 100 and the convex structure units 200 are connected; the concave structure unit 100 includes a single-layer fabric portion, and the convex structure unit 200 includes a multi-layer spacer fabric portion, thereby obtaining a warp knitted concave-convex fabric grey cloth; wherein the weaving parameters (comb, yarn padding number, yarn threading parameters) of the double needle bed groove needle warp knitting machine RD7 without jacquard include at least:

[0071]

[0072]

[0073] Step S300B: pre-forming, dyeing and post-forming the warp knitted concave-convex fabric grey cloth to form a finished warp knitted concave-convex fabric B.

[0074] (3) Production method of partially single-layer warp knitted concave-convex fabric C

[0075] like Figure 3 , Figure 7 As shown, the partially single-layer warp-knitted concave-convex fabric C includes: a finished width of 142 cm, 2 woven fabrics, a horizontal density of 11 wpc, a pattern including a square pattern, a single-layer fabric portion including a plain weave, and convex structure units with different widths.

[0076] Step SFC: at least according to the width, number of pieces, horizontal density and pattern of the finished warp knitted concave-convex fabric C, select a double needle bed groove needle warp knitting machine RD7 without jacquard, machine gauge E24, 140 inches, 7 guide bars, the actual number of guide bars used is 7, and the distance of the knock-over plate is 3.5 mm;

[0077] Step S100C: According to the pattern of the local single-layer warp-knitted concave-convex fabric C and the warping process of each combing bar, the warping parameters of combing bars GB1, GB2, GB3, GB4, GB5, GB6, and GB7 are as follows: GB1: 132*6A, GB2: 132*6A, GB3: 396*6B, GB4: 396*6B, GB5: 132*6C, GB6: 396*6C, GB7: 528*6D, A: 150D / 48F polyester, B: 150D / 48F polyester black yarn, C: 30D polyester monofilament, D: 100D / 36F polyester cationic.

[0078] Step S200C: weaving on the double needle bed groove needle warp knitting machine RD7 without jacquard, with a pattern height of 24 horizontal rows, a pattern width of 16 vertical rows, and a machine density of 15.4 cpc. The combing bars GB1 and GB2 only form loops on the mattress yarn of the front needle bed to form a dense structure. The combing bar GB5 forms loops on the front and rear needle beds in turn. The combing bars GB1, GB2, GB5, and GB7 form a convex structure unit 2011C (200) according to a certain regular threading method. The combing bars GB3 and GB4 only form loops on the mattress yarn of the front needle bed in the convex structure unit 2012C (200), and only form loops on the mattress yarn of the rear needle bed in the concave structure unit 101C (200). GB6 forms loops on the front and rear needle beds in turn in the convex structure unit 2012C (200), and only forms loops on the mattress yarn of the rear needle bed in the concave structure unit 101C (100). The combs GB3, GB4, GB6 and GB7 form convex structure units 2012C (200) and concave structure units 101C (100) according to a certain regular threading method, and the combing bar GB7 only forms a loop of the pad yarn on the back needle to weave the base fabric; the double needle bed groove needle warp knitting machine RD7 without jacquard continues to perform the weaving operation according to the preset rule, and along the weaving direction of the fabric, a plurality of concave structure units 100 and a plurality of convex structure units 200 are formed, and at least some of the concave structure units 100 and the convex structure units 200 are connected; the concave structure unit 100 includes a single-layer fabric portion, and the convex structure unit 200 includes a multi-layer spacer fabric portion, thereby obtaining a warp knitted concave-convex fabric grey cloth; wherein the weaving parameters (combing bar, pad yarn number, threading parameters) of the double needle bed groove needle warp knitting machine RD7 without jacquard at least include:

[0079] Comb Digital yarn pad Threading GB1 1-0-1-1 / 1-2-1-1 / / 4A,12* GB2 1-2-1-1 / 1-0-1-1 / / 4A,12* GB3 (1-0-1-1 / 1-2-1-1)*6 / (1-1-1-0 / 1-1-1-2)*6 / / 4*,12B GB4 (1-2-1-1 / 1-0-1-1)*6 / (1-1-1-2 / 1-1-1-0)*6 / / 4*,12B GB5 1-0-1-0 / 0-1-0-1 / / 4C,12* GB6 (1-0-1-0 / 0-1-0-1)*6 / (1-1-1-0 / 0-0-0-1)*6 / / 4*,12C GB7 1-1-2-0 / 1-1-1-3 / / 16D

[0080] Step S300C: pre-forming, dyeing, and post-forming the warp knitted concave-convex fabric grey cloth to form a finished warp knitted concave-convex fabric C.

[0081] In a production method of a partially single-layer warp-knitted concave-convex fabric applied in the present invention, firstly, in the production process of the partially single-layer warp-knitted concave-convex fabric, the process links (such as production process parameters, etc.) in the warping step of the warping machine, the weaving step of the double-needle bed groove needle warp knitting machine without jacquard, and the shaping and dyeing step can be individually and specifically adjusted and controlled. For example, in the warping step of the warping machine, the number of warping heads and the number of head patterns of each comb can be calculated, and the warping can be accurately performed on the warping machine to ensure the consistency and quality of the finished product. At the same time, the production method as a whole can reduce errors and waste in the production process, and through the pre-shaping, dyeing, and post-shaping steps, the feel, color uniformity and dimensional stability of the fabric can be improved, the appearance quality and use performance of the finished product can be improved, and the production efficiency and the yield of the fabric can be improved; in addition, the warp-knitted concave-convex fabric includes a concave structure unit and a convex structure unit, the convex structure unit includes a multi-layer spacer fabric portion, the concave structure unit includes a single-layer fabric portion, and at least part of the concave structure unit and the convex structure unit are connected. In this way, by connecting at least some of the concave structural units and the convex structural units, a warp knitted concave convex fabric with both a single-layer fabric portion and a multi-layer fabric portion can be formed, thereby enhancing the three-dimensional sense and visual effect of the fabric, making the warp knitted concave convex fabric more durable and not easy to loosen, thereby improving the safety and practicality of the warp knitted concave convex fabric and meeting market demand and market prospects.

[0082] The present invention and its implementation methods are described above, but such description is not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A partially single-layer warp knitted concave-convex fabric, characterized in that: include: A concave structural unit and a convex structural unit; the concave structural unit comprises a single-layer fabric portion, the convex structural unit comprises a multi-layer spacer fabric portion, the multi-layer spacer fabric portion comprises a first surface layer, a spacer layer and a second surface layer, the spacer layer is located between the first surface layer and the second surface layer, and the spacer layer connects the first surface layer and the second surface layer; At least some of the concave structural units and the convex structural units are connected.

2. According to the partially single-layer warp-knitted concave-convex fabric described in claim 1, the thickness range of the spacer layer along the thickness direction of the fabric is 1.2mm-800mm, the spacer layer includes spacer wires, and the spacer wires are 20D-400D yarns; the raw material of the first surface layer comes from one or more of polyester, nylon, polyester-spandex core-spun yarn, and nylon-spandex core-spun yarn, and the raw material of the second surface layer comes from one or more of polyester, nylon, polyester-spandex core-spun yarn, and nylon-spandex core-spun yarn.

3. The partially single-layer warp knitted concave-convex fabric according to claim 2, characterized in that: There are multiple concave structural units and multiple convex structural units. Along the thickness direction of the fabric, the thicknesses of the multiple concave structural units are not completely the same, and the thicknesses of the multiple convex structural units are not completely the same.

4. A method for producing a partially single-layer warp knitted concave-convex fabric, producing a partially single-layer warp knitted concave-convex fabric as claimed in any one of claims 1 to 3, characterized in that: The following steps are involved: Step S100: according to the pattern of the warp knitted concave-convex fabric, the number of warping heads of each guide bar of the double needle bed groove needle warp knitting machine without jacquard and the number of head grains of each guide bar are calculated, and warping is performed on the warping machine; Step S200: Weaving on a double-needle-bed groove needle warp knitting machine without jacquard, forming a plurality of concave structural units and a plurality of convex structural units along the weaving direction of the fabric, at least some of the concave structural units and the convex structural units are connected, the convex structural units include a multi-layer spacer fabric portion, and the concave structural units include a single-layer fabric portion, thereby obtaining a warp knitted concave-convex fabric grey cloth; Step S300: pre-forming, dyeing and post-forming the warp knitted concave-convex fabric grey cloth to form a finished warp knitted concave-convex fabric.

5. The method for producing a partially single-layer warp knitted concave-convex fabric according to claim 4, characterized in that: Before step S100, step SF is also included: at least according to the width, number of widths, horizontal density and pattern of the finished warp knitted concave and convex fabric, a double needle bed groove needle warp knitting machine without jacquard, which includes at least a first comb bar, a second comb bar and a third comb bar, is selected for knitting, and at least the machine width, machine gauge and number of comb bars of the double needle bed groove needle warp knitting machine without jacquard are selected.

6. The method for producing a partially single-layer warp knitted concave-convex fabric according to claim 5, characterized in that: In step S200, the multi-layer spacer fabric portion includes a first surface layer, a spacer layer and a second surface layer, the spacer layer is located between the first surface layer and the second surface layer, and the spacer layer connects the first surface layer and the second surface layer; each comb bar of the double needle bed groove needle warp knitting machine without jacquard threads the yarn according to the threading rule, and all comb bars form loops on the single-side needle bed to form a single-layer fabric portion; for the multi-layer spacer fabric portion, at least one first comb bar only weaves the first surface layer on the front needle bed, at least one second comb bar only weaves the second surface layer on the rear needle bed, and at least one third comb bar weaves the yarn on both the front needle bed and the rear needle bed to connect the first surface layer and the second surface layer to form a spacer layer.

7. The method for producing a partially single-layer warp knitted concave-convex fabric according to claim 6, characterized in that: In step S200, along the width direction of the fabric, the width of the concave structural unit and the width of the convex structural unit are at least jointly determined by the number of warp threadings of the double needle bed groove needle warp knitting machine without jacquard, the number of transverse needles, the machine gauge, and the fabric shrinkage.

8. The method for producing a partially single-layer warp knitted concave-convex fabric according to claim 7, characterized in that: In step S200, along the weaving direction of the fabric, the length of the concave structural unit is determined by the number of horizontal rows in which all the combing bars form loops on the single-side needle bed, the longitudinal density of weaving and the longitudinal shrinkage of the fabric; the length of the convex structural unit is determined by at least the number of horizontal rows in which the corresponding combing bars form loops on the front needle bed and the rear needle bed, the longitudinal density of weaving and the longitudinal shrinkage of the fabric.

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