Lightweight breathable warp knitted fabric
By using different types of yarns in warp knitted fabrics, combined with specific knitting structures and needle back lateral movement directions, the problems of poor breathability and difficulty in knitting of existing warp knitted fabrics are solved, and lightweight, breathable, soft feel and good curling and dispersing properties are achieved.
Patent Information
- Application Number
- CN202420616171.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-03-28
AI Technical Summary
The existing warp knitted fabrics have poor breathability due to their dense tissue structure, which is stuffy for a long time, and have a large weaving tension, which makes it easy to break yarn, which is difficult to produce, has a small production capacity, and is easy to make heavy weight, and has a rich feel.
Different types of yarns are knitting with Y1 and Y2 yarns. Y1 yarn is inelastic yarn and Y2 yarns are elastic yarns. Through the weaving method of three-needle warp-level structure and two-needle warp-level structure, combined with the same knitting method of the needle back, the porosity between the yarns is improved and the breathability and softness of the fabric is enhanced.
It realizes lightweight and breathable fabric, with a small angle of warp curling edges, and a small number of dispersed coils in the reverse braiding direction. It has good curling edges and dispersion, while ensuring the softness and breathability of the fabric.
Smart Images
Figure CN222834518U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a fabric, in particular to a soft, light and breathable warp knitted fabric. Background Art
[0002] The underwear industry has a long history in China. As time goes by, people are more yearning for freedom and unrestrainedness. Consumers have higher requirements for underwear fabrics. The concept of "lightweight" has gradually emerged. Underwear products have gradually formed the characteristics of lightness, softness, moisture absorption, breathability, and comfort, and can fully show the perfect curves of women. At the same time, "seamless clothes" and "one-piece" and other arbitrary cut fabrics occupy a large share in the underwear market. Compared with weft knitting and woven fabrics, warp knitting fabrics have certain advantages: soft and comfortable, good breathability, not easy to deform, durable, elastic and body-modifying. The advantages of warp knitting fabrics make warp knitted arbitrary cut fabrics have an increasingly greater influence.
[0003] In the warp knitted free-cut fabric, the long-extension line warp flat or warp velvet structure is used as the surface structure, and the heavy warp flat structure is used as the ground structure. The fabric has become a mainstream in the underwear fabric market because it can achieve high stretch, high recovery, and high support. However, because both the surface structure and the ground structure are dense structures, air and water vapor are not easy to penetrate between the fibers, causing the fabric to be stuffy and poor in breathability after wearing for a long time. In addition, when the heavy warp flat structure is knitted, each warp yarn must be padded on two needles at the same time. For the needle far from the yarn guide needle, when the yarn is padded into a loop, it not only has to overcome the basic resistance, but also needs to overcome the friction resistance between the previous knitting needle and its old coil. Therefore, the knitting tension of this fabric is large, the yarn is easy to break, the production is difficult, the production capacity is small, the spandex content is high, the gram weight is easy to be heavy, and the hand feel is rich.
[0004] In the market, double warp flat fabrics that can be cut at will are also the preferred material for seamless underwear. However, the extension line of the double warp flat structure is short, and the displacement angle difference of warp and weft stretching is not large, so the warp and weft modulus of the fabric is large, the opening is small, the pores between the yarns are small, the air permeability is insufficient, and it is easy to fall apart. In some underwear fabric application scenarios, such as yoga, swimsuits, etc., this fabric has certain limitations. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a lightweight and breathable warp knitted fabric.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A lightweight and breathable warp knitted fabric comprises a fabric body, wherein the fabric body is woven by at least two different types of yarns including a Y1 yarn and a Y2 yarn, wherein the Y1 yarn is a non-elastic yarn, the Y2 yarn is an elastic yarn, the thickness of the Y1 yarn is 10D-40D, and the DPF is ≤1; the Y1 yarn is woven with a three-needle warp plain weave, and the Y2 yarn is woven with a two-needle warp plain weave; when the Y1 yarn and the Y2 yarn are woven, the needle backs of the Y1 yarn and the Y2 yarn move in the same direction each time; the fabric body is stretched 150% along the warp direction and then restored to the original length; the warp curling degree of the fabric body is tested, the warp curling angle θ is less than 75°, the number of loose loops in the reverse weaving direction is ≤2, and the compression work / thickness value of the fabric body is ≥300gf.
[0008] The thickness of the Y1 yarn is 20D-30D.
[0009] The Y2 yarn is spandex. Preferably, the spandex content accounts for ≤35% of the entire fabric content.
[0010] One side surface or both side surfaces of the fabric body are subjected to a hair effect treatment to form a plush layer.
[0011] The fabric body Y1 yarn adopts three-needle closed warp plain weave and is woven in a motion mode of inlay yarn number 1-0 / 2-3 / / , and the Y2 elastic yarn adopts two-needle closed warp plain weave and is woven in a motion mode of inlay yarn number 1-0 / 1-2 / / .
[0012] The fabric body Y1 yarn adopts three-needle closed warp plain weave and is woven in a motion mode of inlay yarn number 1-0 / 2-3 / / , and the Y2 elastic yarn adopts two-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 2-1 / / .
[0013] The fabric body Y1 yarn adopts three-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 3-2 / / , and the fabric body Y2 yarn adopts two-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 2-1 / / .
[0014] The fabric body Y1 yarn adopts three-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 3-2 / / , and the fabric body Y2 yarn adopts two-needle closed warp plain weave and is woven in a motion mode of inlay yarn number 1-0 / 1-2 / / .
[0015] The weight range of the fabric body is ≤160g / m 2 .
[0016] The fabric body is elastic fabric.
[0017] Compared with the prior art, the utility model has the following beneficial technical effects:
[0018] By making the Y1 yarn and the Y2 yarn have the same lateral movement direction of the needle back each time during weaving and coordinating with different weaving structures, the fabric body is stretched 150% along the warp direction of the fabric and then restored to its original length. The warp curling degree is tested, and the warp curling angle θ is less than 75°, and the number of loose coils in the reverse weaving direction is ≤2, so that the fabric has the characteristics of good curling and good loosening properties. By adopting thinner Y1 yarn, the fabric is lightweight, and by limiting the ratio of compression work / thickness of the fabric, it is ensured that the fabric has good softness. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic diagram of the organizational structure of the first embodiment of the present invention;
[0020] Figure 2 is a schematic diagram of the organizational structure of the second embodiment of the present invention;
[0021] Figure 3 is a schematic diagram of the organizational structure of Embodiment 3 of the present invention;
[0022] Figure 4 It is a schematic diagram of the organizational structure of the fourth embodiment of the present invention. DETAILED DESCRIPTION
[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0024] In the description of the present utility model, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply 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 utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected 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 utility model can be understood according to specific circumstances.
[0026] A lightweight and breathable warp knitted fabric comprises a fabric body, wherein the fabric body is woven by at least two different types of yarns including a Y1 yarn and a Y2 yarn, wherein the Y1 yarn is a non-elastic yarn, the Y2 yarn is an elastic yarn, the thickness of the Y1 yarn is 10D-40D, and the DPF is less than or equal to 1; the Y1 yarn is woven with a three-needle warp plain weave, and the Y2 yarn is woven with a two-needle warp plain weave; when weaving, the Y1 yarn and the Y2 yarn have the same needle back transverse shift direction each time, so that the pores between the yarns are larger, and the air permeability is improved; the fabric body is stretched 150% along the warp direction of the fabric, and then restored to the original length, and the warp curling degree is tested, and the warp curling angle θ is less than 75°; the compression work / thickness value of the fabric body is greater than or equal to 300gf, and by limiting the size of the compression work / thickness ratio, it can be ensured that the fabric has good flexibility, and the Y1 yarn and the Y2 yarn are woven in different weaving modes to achieve good anti-loosening performance, and the number of loosening coils in the reverse weaving direction is less than or equal to 2. The weight range of the fabric body is ≤160g / m 2 Since Y1 yarn only uses 10D-40D thickness, it is an ultra-fine yarn, which can make the fabric lighter.
[0027] In some embodiments, the fabric body uses the same direction of needle front pad yarn and needle back transverse shift. The fabric body is stretched 150% along the warp direction of the fabric, and then restored to its original length. The warp curling degree is tested, and the warp curling angle θ is less than 75°. The use of high-temperature predetermined easy-to-adhere elastic yarn spandex can ensure that the number of coils that fall apart in the opposite weaving direction of the fabric under force is ≤2, which realizes the arbitrary cutting of the fabric and makes it difficult to fall apart. In terms of structure, when the Y1 yarn and the Y2 yarn are woven, the needle back transverse shift direction is the same each time, the two yarns are arranged in the same direction, and the two yarns are not interwoven, so that the gap between the two yarns is larger and the air permeability of the fabric is increased. With the same tissue structure and yarn denier, the smaller the fabric density, the looser the fabric, and the better the fabric's air permeability; with the same yarn denier, the larger the filament stitch length, the more yarns are contained per unit area, that is, the density will increase, and the fabric's air permeability will become worse; with the same tissue structure and the same filament yarn denier, the thicker the spandex yarn, the stronger the spandex's ability to block air penetration in the volume space, and the worse the fabric's air permeability.
[0028] In other embodiments, under the same organization and yarn denier, the more fibers contained in the unit cross-sectional area of the yarn, the larger the specific surface area of the yarn, and the softer the fabric; under the premise of the same material, the same yarn denier, and the same organization structure, the smaller the fabric density and the smaller the fabric tightness, the softer the fabric; when the fabric density and yarn denier remain unchanged, the longer the coil length, the softer the fabric; when the fabric is treated with a hair effect, the fabric will become softer. The fabric body is tested by the FabricTouch Tester hand feel tester to test the compression characteristic value of the fabric. By performing a compression test on the fabric, its compressive resistance and elastic recovery ability can be evaluated, and the ratio of the test data compression work CW / thickness T is used as a reference value for evaluating the softness of the fabric. Evaluation criteria: when the compression work CW / thickness T ≥ 300gf, the fabric is judged to have good softness.
[0029] The thickness of the Y1 yarn is 20D-30D, which is a better choice.
[0030] The Y2 yarn is spandex. Preferably, the spandex content accounts for ≤35% of the entire fabric content, and of course it also needs to be greater than 0 and have a certain elasticity.
[0031] One side surface or both side surfaces of the fabric body are subjected to a hair effect treatment to form a plush layer.
[0032] Regarding the specific weaving method of the Y1 yarn and the Y2 yarn, there are several preferred implementation methods as follows.
[0033] refer to Figure 1 As shown, the fabric body Y1 yarn adopts a three-needle closed warp plain weave and is woven in a movement mode of inlay yarn number 1-0 / 2-3 / / , and the Y2 elastic yarn adopts a two-needle closed warp plain weave and is woven in a movement mode of inlay yarn number 1-0 / 1-2 / / .
[0034] Or Figure 2 As shown, the fabric body Y1 yarn adopts a three-needle closed warp plain weave and is woven in a motion mode of inlay yarn number 1-0 / 2-3 / / , and the Y2 elastic yarn adopts a two-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 2-1 / / .
[0035] Or Figure 3 As shown, the fabric body Y1 yarn adopts a three-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 3-2 / / , and the Y2 yarn adopts a two-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 2-1 / / .
[0036] Or Figure 4As shown, the fabric body Y1 yarn adopts a three-needle open warp plain weave and is woven in a movement mode of inlay yarn number 0-1 / 3-2 / / , and the Y2 yarn adopts a two-needle closed warp plain weave and is woven in a movement mode of inlay yarn number 1-0 / 1-2 / / .
[0037] According to different methods, you can choose the corresponding weaving method above.
[0038] Specific implementation cases:
[0039] 1. Warping of yarn used for warp knitting:
[0040] 1) Warping of nylon yarn
[0041] Warping machine model: Karl Mayer DSDS21 / 30DNC, negative yarn feeding.
[0042] Warping temperature: 23°C, Warping humidity: 65%
[0043] The workshop sets the process parameters under the above temperature and humidity conditions.
[0044] 2) Warping of spandex
[0045] Warping machine model: Karl Mayer DSE21 / 21EC, positive yarn feeding.
[0046] Warping temperature: 23°C, Warping humidity: 65%
[0047] The workshop sets the process parameters under the above temperature and humidity conditions.
[0048] 2. Weaving
[0049] Weaving machine model: Karl Mayer HKS2-3E tricot machine
[0050] Machine gauge: E40
[0051] Yarn: GB1-PA6 20D / 34F SD FDY
[0052] Yarn: GB2-PU 20D
[0053] Structure: GB1-Inlay yarn digital 1-0 / 2-3 / / , full penetration, 1100mm / R
[0054] GB2-Inlay yarn digital 1-0 / 1 / 2 / / , full wear, 630mm / R
[0055] 3. Post-processing
[0056] Washing--Pre-dyeing--Overflow dyeing--Dehydration--Setting and drying--Post-dyeing
[0057] The preset temperature is 195℃, the machine speed is 18-20m / min, and the finished product density is 50 / cm.
[0058] 4. Fabric style
[0059] Finished product specifications: width 165cm, weight 97g / m 2
[0060] Finished product density: transverse density 29 / cm, longitudinal density 50 / cm
[0061] Finished product composition: 79% Polyamide 21% Elastane
[0062] 5. Fabric characteristics and advantages
[0063] 1) Lightweight and good elasticity: In this implementation case, the fabric reaches 97g / m by strictly selecting the yarn fineness, the number of warp knitting machine needles and yarn length, and the finished product density. 2 Lightweight, tensile test: M&S P15A1.5kgf, warp opening 185%, weft opening 115%, good tensile performance.
[0064] 2) No curling in the warp direction: sample 10cm*5cm
[0065] Warp test specimen: stretch 150%, stretch once, and measure the curling angle;
[0066] Weft specimen: stretch 60%, hold for 1 minute, return to original length of 10 cm, pause for 3 minutes, repeat this process for 1 minute and 3 minutes for 3 times, and then measure the curling angle.
[0067] For the sample of the embodiment of the present invention, the warp curling angle θ is less than 75°.
[0068] 3) Good air permeability: Test method JIS L 1096A method, test the left, middle and right data of the fabric body, the test value ≥129cm3 / cm2 / s.
[0069] 4) Soft hand feel: The softness of fabrics is related to their compression properties. Using the Fabric Touch Tester (hereinafter referred to as FTT), four fabrics of the same structure were subjected to compression tests, and the following FTT compression property values were obtained. We use the ratio of test data compression work CW / thickness T as a reference value for evaluating the softness of fabrics. Evaluation criteria: when compression work CW / thickness T ≥ 300gf, the fabric is judged to be soft. At the same time, we asked 10 people to conduct subjective hand feel evaluations on these fabrics, and obtained the subjective indicators shown in the following table using the hand feel test methods of "one pinch", "two touches", "three grasps" and "four looks". (FTT values are shown in the following table)
[0070]
[0071] From the chart data, the greater the compression work CW, the smaller the compression average stiffness CAR and recovery average stiffness RAR, and the softer the fabric. Intuitively, we use the value of compression work CW / thickness T to evaluate the softness of the fabric. The larger the ratio, the softer the fabric. From the chart data, it can be concluded that the finer the yarn and the longer the yarn, the softer the fabric. As we all know, the increase in fiber F number can increase the softness of the fabric, but from the comparison of experimental data, the increase in F number has less effect on the softness of the fabric than the selection of yarn thickness. The finer the yarn and the smaller the DPF, the softer the fabric.
[0072] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A lightweight and breathable warp knitted fabric, comprising a fabric body, characterized in that: The fabric body is woven by at least two different types of yarns including Y1 yarn and Y2 yarn, wherein Y1 yarn is a non-elastic yarn, Y2 yarn is an elastic yarn, the thickness of Y1 yarn is 10D-40D, and DPF≤1; Y1 yarn is woven with three-needle warp plain weave, and Y2 yarn is woven with two-needle warp plain weave; when weaving, the needle back of Y1 yarn and Y2 yarn have the same transverse direction each time, the fabric body is stretched 150% along the warp direction and then restored to its original length, and the warp curling degree of the fabric body is tested, the warp curling angle θ is less than 75°, the number of loose coils in the reverse weaving direction is ≤2, and the compression work / thickness value of the fabric body is ≥300gf.
2. The lightweight and breathable warp knitted fabric according to claim 1, characterized in that: The thickness of the Y1 yarn is 20D-30D.
3. The lightweight and breathable warp knitted fabric according to claim 1, characterized in that: The Y2 yarn is spandex, and the spandex content accounts for ≤35% of the entire fabric body.
4. The lightweight and breathable warp knitted fabric according to claim 1, characterized in that: One side surface or both side surfaces of the fabric body are subjected to a hair effect treatment to form a plush layer.
5. The lightweight and breathable warp knitted fabric according to claim 1, characterized in that: The fabric body Y1 yarn adopts three-needle closed warp plain weave and is woven in a motion mode of inlay yarn number 1-0 / 2-3 / / , and the Y2 elastic yarn adopts two-needle closed warp plain weave and is woven in a motion mode of inlay yarn number 1-0 / 1-2 / / .
6. The lightweight and breathable warp knitted fabric according to claim 1, characterized in that: The fabric body Y1 yarn adopts three-needle closed warp plain weave and is woven in a motion mode of inlay yarn number 1-0 / 2-3 / / , and the Y2 elastic yarn adopts two-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 2-1 / / .
7. The lightweight and breathable warp knitted fabric according to claim 1, characterized in that: The fabric body Y1 yarn adopts three-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 3-2 / / , and the fabric body Y2 yarn adopts two-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 2-1 / / .
8. The lightweight and breathable warp knitted fabric according to claim 1, characterized in that: The fabric body Y1 yarn adopts three-needle open warp plain weave and is woven in a motion mode of inlay yarn number 0-1 / 3-2 / / , and the fabric body Y2 yarn adopts two-needle closed warp plain weave and is woven in a motion mode of inlay yarn number 1-0 / 1-2 / / .
9. The lightweight and breathable warp knitted fabric according to claim 1, characterized in that: The weight range of the fabric body is ≤160g / m 2 .
10. The lightweight and breathable warp knitted fabric according to claim 1, characterized in that: The fabric body is elastic fabric.