Single-sided knitted fabric with differentiated water-conducting ability

Abstract

A single-sided knitted fabric with differentiated water conduction ability comprises a fabric body, the fabric body has a skin-contacting surface and a clothing surface, the fabric body is a single-sided knitted fabric woven by at least one yarn in a loop, the skin-contacting surface is composed of a skin-contacting unit, and the clothing surface is composed of an evaporation unit; the evaporation unit comprises an evaporation circle column, an evaporation needle arc and an evaporation sedimentation arc, and the skin-contacting unit comprises a skin-contacting needle arc and a skin-contacting sedimentation arc; the evaporation circle column, the evaporation needle arc, the evaporation sedimentation arc, the skin-contacting needle arc and the skin-contacting sedimentation arc are woven by the same yarn and form a unit coil; in a unit coil, by adjusting the horizontal density and the vertical density of the fabric body, the ratio of the length of the evaporation unit to the length of the skin-contacting unit is set to be ≥1.2, and the diameter d of the yarn is <1mm, so that the liquid water unidirectional transfer index OWTC of the fabric body is ≥100%. The present invention has good unidirectional moisture conduction ability and improves comfort by adjusting the woven structure in the fabric body.

Description

Technical Field

[0001] The invention belongs to the technical field of textile fabrics, and in particular relates to a single-sided knitted fabric with differentiated water-conducting capabilities. Background Art

[0002] With the improvement of knitted fabric technology, more and more functional fabric designs have been realized, especially functional fabrics that can participate in the moisture management of the "microclimate" on the surface of human skin have received more and more attention in recent years. When the human body sweats, the skin-contacting layer of the fabric can quickly guide the excess moisture in the "microclimate" on the surface of the skin to the surface of the fabric; the surface of the fabric, that is, the evaporation layer, can quickly evaporate the moisture and keep it dry. Of course, on this basis, the fabric should be as light as possible, comfortable to wear, and have good shape retention.

[0003] Patent CN201710056898.8 discloses an elastic water-absorbing quick-drying knitted fabric and its use, wherein the fabric is divided into a surface layer and an inner layer by a weaving method. A structure is adopted in which at least one route of the inner layer in a tissue cycle is composed of a part A and a part B formed by two different weaving actions, and the part B is formed by a non-loop weaving action. Although it can achieve a dry feeling for human skin, in order to achieve a better sweat-conducting effect, it is required that the number of routes of the part A and the part B formed by the two weaving actions is as large as possible, and the part B is a non-loop action. The more parts B there are, the more it will affect the smoothness of the inner layer, so the wearing comfort of this fabric is not ideal.

[0004] Patent CN201922434061.X discloses a pure cotton unilateral moisture-conducting honeycomb knitted fabric. By using a double-sided structure, the inner layer of the fabric is composed of hydrophobic cotton yarn, and the surface layer of the fabric is composed of hydrophilic cotton yarn. When the human body sweats, the sweat can diffuse from the inner layer of the fabric to the surface of the fabric, thereby achieving the effect of dry skin. However, since this fabric uses a double-sided structure, the weight of the fabric is relatively difficult to make light and thin compared to single-sided fabrics, and the breathability is also worse than that of single-sided fabrics; the comfort of wearing will also be greatly reduced.

[0005] Comprehensive analysis of existing technologies shows that the current technologies for achieving differentiated moisture conduction of fabrics include post-finishing methods, but there are problems such as poor resistance to water washing and lack of long-lasting functionality; and achieving differentiated moisture conduction through capillary effect is limited to a double-layer structure, which has certain limitations. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a single-sided knitted fabric with differentiated water-conducting ability.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A single-sided knitted fabric with differentiated water-conducting ability, comprising a fabric body, wherein the fabric body has a skin-contacting surface and a clothing surface, wherein the fabric body is a single-sided knitted fabric knitted by looping at least one yarn, wherein the skin-contacting surface is composed of a plurality of skin-contacting units, and the clothing surface is composed of a plurality of evaporation units;

[0009] The evaporation unit includes an evaporation coil column L1, an evaporation needle arc L2 and an evaporation sedimentation arc L3, and the skin-contacting unit includes a skin-contacting needle arc L4 and a skin-contacting sedimentation arc L5; the evaporation coil column L1, the evaporation needle arc L2, the evaporation sedimentation arc L3, the skin-contacting needle arc L4 and the skin-contacting sedimentation arc L5 are woven with the same yarn to form a unit coil;

[0010] In a unit coil, by adjusting the horizontal and vertical densities of the fabric body, the ratio of the length of the evaporation unit to the length of the skin-contacting unit is set to be ≥1.2, and the diameter of the yarn d is <1mm, so that the liquid water one-way transfer index OWTC of the fabric body is ≥100%.

[0011] In a unit coil,

[0012] The length of an evaporation circle column L1 is calculated as:

[0013]

[0014] Right now:

[0015] Where: B-circle height;

[0016] Pb-longitudinal density of the fabric body;

[0017] d – yarn diameter;

[0018] The calculation of the arc length L2 of an evaporation needle is:

[0019]

[0020] Right now:

[0021] The length of an evaporation precipitation arc L3 is calculated as:

[0022]

[0023] Right now:

[0024] Where: G-arc diameter of unit coil;

[0025] α- the arc corresponding to the arc of the evaporation needle;

[0026] β- the arc corresponding to the evaporation precipitation arc;

[0027] Pa-the horizontal density of the fabric body;

[0028] The calculation of the length of a skin-attached needle arc L4 is:

[0029]

[0030] Right now:

[0031] The length of the skin-closed settlement arc L5 is calculated as follows:

[0032]

[0033] Right now:

[0034] In a unit coil, the ratio of the length S1 of the evaporation unit to the length S2 of the skin contact unit is calculated as follows:

[0035]

[0036] Right now:

[0037] As a further solution, on the fabric body, the transverse density Pa is 5-40 longitudinal rows / cm, and the longitudinal density Pb ​​is 10-60 longitudinal rows / cm.

[0038] As a further solution, the yarn is cellulose fiber or chemical fiber, and after the yarn forms a finished fabric body, the contact angle of the yarn is less than or equal to 70°.

[0039] As a further solution, the fabric body is formed by weaving two different yarns, one of which is polyurethane elastic fiber.

[0040] Or the fabric body is composed of several kinds of inelastic yarns.

[0041] Or the fabric body is composed of several kinds of elastic yarns.

[0042] Or the fabric body is composed of a combination of several elastic yarns and non-elastic yarns.

[0043] The fabric body is a single-sided plain fabric or a single-sided jacquard fabric.

[0044] The present invention adjusts the distribution density of the skin-contacting units and the evaporation units in the fabric body, that is, adjusts the horizontal density and the vertical density of the fabric body, so that the fabric can achieve better unidirectional moisture conduction function and improve the comfort when wearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is an enlarged schematic diagram of the coil part of the fabric body in the present invention;

[0046] Figure 2 A simplified diagram of a two-dimensional model of a knitted fabric loop established by a geometric method in the present invention;

[0047] exist Figure 2 In , the numbers are defined as:

[0048] Points 0 and 9 are the vertices of the center line of the sedimentation arc; points 1 and 8 are the intersection points of the inner side of the plane projection of the coil column in the previous horizontal row and the center line of the sedimentation arc; points 2 and 7 are the intersection points of the center line of the sedimentation arc and the center line of the column; points 3 and 6 are the intersection points of the center line of the needle arc and the center line of the column; points 4 and 5 are the intersection points of the outer side of the plane projection of the coil column in the next horizontal row and the center line of the needle arc; 0-1 and 8-9 are skin-tight sedimentation arcs L5, 1-2 and 7-8 are evaporation sedimentation arcs L3, 2-3 and 6-7 are evaporation columns L1, 3-4 and 5-6 are evaporation needle arcs L2, and 4-5 is skin needle arc L4. DETAILED DESCRIPTION

[0049] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0050] As attached Figure 1 As shown, the present invention discloses a single-sided knitted fabric with differentiated water-conducting ability, including a fabric body, wherein the fabric body has a skin-contacting surface and a clothing surface, wherein the fabric body is a single-sided knitted fabric woven into a loop by at least one yarn, wherein the skin-contacting surface is composed of a plurality of skin-contacting units, and the clothing surface is composed of a plurality of evaporation units, wherein the skin-contacting surface is used for contacting the skin, and the clothing surface faces outward, and good water evaporation performance can be formed through the evaporation units.

[0051] The evaporation unit includes an evaporation circle column L1, an evaporation needle arc L2 and an evaporation sedimentation arc L3, and the skin-contacting unit includes a skin-contacting needle arc L4 and a skin-contacting sedimentation arc L5; the evaporation circle column L1, the evaporation needle arc L2, the evaporation sedimentation arc L3, the skin-contacting needle arc L4 and the skin-contacting sedimentation arc L5 are woven with the same yarn to form a unit coil, and the fabric body is composed of a plurality of unit coils, which are formed by weaving the yarn as a whole.

[0052] In a unit coil, by calculating and adjusting the length between the transverse density Pa and the longitudinal density Pb ​​of the fabric body, the ratio of the length of the evaporation unit to the length of the skin-contacting unit is ≥1.2, and the diameter of the yarn d is <1mm, so that the liquid water unidirectional transmission index OWTC of the fabric body is ≥100%. By setting the transverse density and longitudinal density, good unidirectional moisture conduction capacity is achieved.

[0053] The coils of the fabric body are divided into five characteristic sections: evaporation circle column L1, evaporation needle arc L2, evaporation sedimentation arc L3, skin-tight needle arc L4 and skin-tight sedimentation arc L5. The length of the finished fabric transverse density Pa is calculated by knowing the yarn diameter d (in mm) and the required length of the finished product width; then, by adjusting the length of the longitudinal density Pb ​​(row / cm), the ratio of the transverse density Pa (row / cm) to the longitudinal density Pb ​​(row / cm) is designed to be ≥1.2, so as to achieve the function of differential moisture conduction of the fabric.

[0054] Longitudinal density and transverse density are professional terms in this field. Pa is expressed by the number of wales of coils within a specified length along the horizontal direction of the knitted fabric. Longitudinal density Pb ​​is expressed by the number of horizontal rows of coils within a specified length along the vertical direction of the knitted fabric.

[0055] In addition, in the specific calculation, the calculation of each parameter is performed according to the following method.

[0056] Attached Figure 2 For the corresponding Figure 1 The geometrically simplified schematic diagram, theoretical calculation, assumes that line segments 0-1, 1-2, 3-4, 4-5, 5-6, 7-8 and 8-9 are a circle with a diameter equal to G (see: Knitting Technology, Long Hairu et al., page 21, Donghua University Press, January 2017, 1st edition), and line segments 2-3 and 6-7 are assumed to be straight lines. Among them:

[0057] Points 0 and 9 are the vertices of the centerline of the settlement arc;

[0058] Points 1 and 8 are the intersections of the inner side of the plane projection of the coil column of the previous row and the center line of the sinker arc according to the knitting sequence;

[0059] Points 2 and 7 are the intersections of the centerline of the settlement arc and the centerline of the circle column;

[0060] Points 3 and 6 are the intersections of the center line of the needle arc and the center line of the circle column;

[0061] Points 4 and 5 are the intersections of the outer side of the plane projection of the next row of coils and the center line of the needle knitting arc in the knitting sequence.

[0062] definition:

[0063] 2-3, 6-7 are evaporation circle columns, and their single length is L1;

[0064] 3-4, 5-6 are arcs for evaporation needles, and their single length is L2;

[0065] 1-2 and 7-8 are evaporation precipitation arcs, and their individual length is L3;

[0066] 4-5 are the arcs of the skin-attaching needle, and their total length is L4;

[0067] 0-1 and 8-9 are skin-closed sedimentation arcs, and their total length is L5.

[0068] The coil spacing A (mm) and coil height B (mm) of the coil can be calculated by the following formula:

[0069] A=10 / Pa (1)

[0070] B=10 / Pb (2)

[0071] The diameter G (mm) of the 0-1-2, 3-4-5-6, 7-8-9 arc segments can be calculated by the following formula:

[0072] G=A / 2+d (3)

[0073] That is: G = 5 / Pa + d

[0074] Where: d-yarn diameter;

[0075] To facilitate the calculation of L2, L3, L4, and L5, the coil diagram is simplified, retaining only the center line and intersection points, and corresponding auxiliary lines are drawn, such as Figure 2 As shown, 0-1-2(R)-3(M)-4(S)-5-6-7-8-9 is the center line of a coil. The auxiliary line SP∥MR and intersects OM at point P, OQ⊥SP at Q, and it is easy to get:

[0076]

[0077] The calculation of the length L1 of the evaporation circle column is:

[0078]

[0079] Right now:

[0080] The calculation of the arc length L2 of the evaporation needle and the arc length L3 of the evaporation precipitation is:

[0081]

[0082]

[0083]

[0084]

[0085]

[0086] Right now:

[0087]

[0088] Similarly:

[0089] Right now:

[0090] Where: α-the arc corresponding to the arc of the evaporation needle;

[0091] β- the arc corresponding to the evaporation precipitation arc;

[0092] Pa-horizontal density;

[0093] Pb-longitudinal density;

[0094] d – yarn diameter;

[0095] The calculation of the skin-attaching needle arc length L4 and the skin-attaching sinking arc length L5 is:

[0096]

[0097] Right now:

[0098]

[0099] Right now: Where: Pa-horizontal density;

[0100] Pb-longitudinal density;

[0101] d – yarn diameter.

[0102] In a unit coil, the ratio of the length S1 of the evaporation unit to the length S2 of the skin contact unit is calculated as follows:

[0103]

[0104] Right now:

[0105] Substituting the values ​​of the evaporation circle column L1, evaporation needle arc L2, evaporation sedimentation arc L3, skin-contacting needle arc L4 and skin-contacting sedimentation arc L5 calculated above, the length ratio of the evaporation unit and the skin-contacting unit can be obtained.

[0106] As a further solution, on the fabric body, the transverse density Pa is 5-40 longitudinal rows / cm, the longitudinal density Pb ​​is 10-60 horizontal rows / cm, and the ratio of the transverse density Pa (longitudinal rows / cm) to the longitudinal density Pb ​​(horizontal rows / cm) is ≥ 1.2. When set within this range, good unidirectional moisture conduction capacity can be ensured.

[0107] The yarn used to weave the fabric body can be one, two or more kinds, and can be the same yarn or different yarns. For example:

[0108] The yarn is cellulose fiber or chemical fiber, and after the yarn forms a finished fabric body, the contact angle of the yarn is less than or equal to 70°, the capillary equivalent radius is not greater than 4.5 μm, and the number of capillaries is not less than 20.

[0109] The contact angle refers to the angle θ between the tangent of the gas-liquid interface at the intersection of the gas, liquid and solid phases, passing through the liquid and the solid-liquid boundary line. It is a measure of the degree of wettability. If θ<90°, the solid surface is hydrophilic, that is, the liquid is easier to wet the solid, and the smaller the angle, the better the wettability; if θ>90°, the solid surface is hydrophobic, that is, the liquid is not easy to wet the solid and is easy to move on the surface. When a drop of liquid falls on a horizontal solid surface, when equilibrium is reached, the contact angle formed and the interfacial tensions meet the following Young's formula.

[0110] As a further solution, the fabric body is woven from two different yarns, one of which is polyurethane elastic fiber and the other can be flexibly selected.

[0111] Or the fabric body is composed of two kinds of inelastic yarns, such as Cotton 40S / 1+PES 50D / 36F, and the fabric formed by weaving is inelastic fabric.

[0112] Or the fabric body is composed of two elastic yarns, PES 75D+PU 20D, such as Cotton 40S / 1+PES50D / 36F+PU 20D, all of which are woven with elastic yarns and have strong elasticity.

[0113] Alternatively, the fabric body is composed of a combination of several elastic yarns and inelastic yarns, and a fabric with moderate elasticity is formed by combining the inelastic yarns and the elastic yarns.

[0114] The fabric body is a single-sided plain fabric or a single-sided jacquard fabric, which makes the entire fabric more beautiful.

[0115] The following is an explanation with a specific example.

[0116] Embodiment 1:

[0117] It is required to design a single-sided fabric with unidirectional moisture conduction function, made of polyester, with certain elasticity and smoothness, and the fabric is required to be delicate, soft, high-grade, with a gram weight of about 140GSM and a width of 160cm. 1. Yarn selection:

[0118] The yarn is made of filament PES 75D / 72F FD DTY (75D polyester low-elastic yarn), and polyurethane elastic fiber PU 20D (20D spandex) is added to increase elasticity and softness.

[0119] 2. Model used:

[0120] The specific machine models are as follows: weft knitting single-sided circular knitting machine, 36G, 34 inches. It can make the woven finished fabric delicate and meet high-end requirements.

[0121] 3.Weaving process:

[0122] Weft knitting plain weave is used to weave: 75D polyester low-elastic yarn: 23cm / 100G, 20D spandex: 9cm / 100G. The finished fabric has a certain degree of elasticity and smoothness.

[0123] 4. The length between the horizontal density and the vertical density is adjusted to design the ratio of the length of the evaporation unit to the length of the skin contact unit in the unit coil to be ≥1.2.

[0124] 20D spandex is non-absorbent and evenly penetrates the fabric body, so its evaporation and water absorption can be ignored. The yarn diameter of 75D polyester low-elastic yarn after dyeing and finishing is D≈0.19mm; the finished product width is required to be 160cm, and the finished product transverse density Pa can be calculated as follows:

[0125] Pa = 24 (vertical line / cm);

[0126] In order for the fabric to have a unidirectional moisture conduction function, the total length of the evaporation unit S1: the total length of the skin contact unit S2 must be ≥ 1.20, that is:

[0127]

[0128] Substituting D=0.19mm, Pa=24, we can obtain Pb≤39.5.

[0129] That is, during the dyeing and finishing process, it is only necessary to control the longitudinal density Pb ​​value below 39.5, and the OWTC (one way transport capability) value of this fabric will be greater than 100%.

[0130] 5. Actual finished product data:

[0131] Width: 160cm, weight: 140g, transverse density Pa value is 24, longitudinal density Pb ​​value is 29, satisfying the condition that the total length of the evaporation unit S1: the total length of the skin-contacting unit S2 ≥ 1.20.

[0132] The yarn contact angle θu is 68°. This fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one way transport capability OWTC (one way transport capability) of the fabric measured this time is 105%.

[0133] Comparative Example 1:

[0134] The same yarns as in Example 1: filament PES 75D / 72F FD DTY and PU 20D (20D spandex) are used to weave a single-sided plain fabric with a grammage of about 140 GSM and a width of 160 cm, but the length between the horizontal density and the vertical density is adjusted, and the total length S1 of the evaporation unit: the total length S2 of the skin-contacting unit is less than 1.20.

[0135] Actual finished product data:

[0136] Width: 160cm, weight: 140g, total length of evaporation unit S1: total length of skin contact unit S2 < 1.20. Yarn contact angle θu is 76°. This fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capability OWTC (one way transport capability) of the fabric measured this time is 82%. This fabric does not have one-way moisture transport capability.

[0137] It can be seen from the test results of Example 1 and Comparative Example 1 that the single-sided knitted fabric of the present invention, according to different yarns, by adjusting the length of the transverse density (Pa, wale / cm) and the longitudinal density (Pb, row / cm) of the fabric, makes the total length S1 of the evaporation unit: the total length S2 of the skin-contacting unit ≥ 1.20, and the OWTC (one way transport capability) value of the fabric body formed thereby is greater than or equal to 100%, the unidirectional moisture conduction capacity is significantly improved, and the fabric has a good unidirectional moisture conduction function.

[0138] Embodiment 2:

[0139] It is required to design a single-sided fabric with unidirectional moisture conduction function, made of cotton, with a certain degree of elasticity and smoothness, a gram weight of about 150GSM and a width of 165cm.

[0140] 1. Yarn selection:

[0141] The yarn is 40S / 1cotton / poly 60 / 40, and polyurethane elastic fiber PU 20D (20D spandex) is used to increase elasticity and have a certain softness.

[0142] 2. Model used:

[0143] The specific machine models are as follows: weft knitting single-sided circular knitting machine, 28G, 34 inches. The finished fabric is delicate and has a high-end feel.

[0144] 3.Weaving process:

[0145] Woven using a weft-knitted plain weave, which gives the fabric stretch and smoothness.

[0146] 4. The length between the horizontal density and the vertical density is adjusted to design the ratio of the length of the evaporation unit to the length of the skin contact unit in the unit coil to be ≥1.2.

[0147] 20D spandex is non-absorbent and runs through the fabric body evenly, so its evaporation and water absorption can be ignored. According to experience, the yarn diameter D of 40S / 1cotton / poly 60 / 40 after dyeing and finishing is ≈ 0.17mm; the finished product width is required to be 165cm, and the finished product transverse density Pa can be calculated as follows:

[0148] Pa = 18 (vertical line / cm)

[0149] In order for the fabric to have a unidirectional moisture conduction function, the total length of the evaporation unit S1: the total length of the skin contact unit S2 must be ≥ 1.20, that is:

[0150] Substituting D=0.17mm, Pa=18, we can obtain Pb≤32.

[0151] That is, during the dyeing and finishing process, it is only necessary to control the longitudinal density Pb ​​value below 32, and the OWTC (oneway transport capability) value of this fabric will be greater than 100%.

[0152] 5. Actual finished product data:

[0153] Width: 165cm, weight: 150GSM, transverse density Pa value is 18, longitudinal density Pb ​​value is 21, satisfying the condition of total length of evaporation unit S1: total length of skin-contacting unit S2 ≥ 1.20. Yarn contact angle θu is 62°. This fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capability OWTC (one way transport capability) of the fabric measured this time is 112%.

[0154] Comparative Example 2:

[0155] The same yarns as in Example 2 are used: 40S / 1cotton / poly 60 / 40 and PU 20D (20D spandex) to weave into a single-sided plain fabric with a grammage of about 150 GSM and a width of 165 cm. However, the length between the horizontal density and the vertical density is adjusted, and the total length S1 of the evaporation unit: the total length S2 of the skin-contacting unit is less than 1.20.

[0156] Actual finished product data:

[0157] Width: 165cm, weight: 150g, total length of evaporation unit S1: total length of skin contact unit S2 < 1.20. Yarn contact angle θu is 78°. This fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capability OWTC (one way transport capability) of the fabric measured this time is 78%. This fabric does not have one-way moisture transport capability.

[0158] It can be seen from the test results of Example 2 and Comparative Example 2 that the single-sided knitted fabric of the present invention, according to different yarns, by adjusting the length of the transverse density (Pa, wale / cm) and the longitudinal density (Pb, row / cm) of the fabric, makes the total length S1 of the evaporation unit: the total length S2 of the skin-contacting unit ≥ 1.20, and the OWTC (one way transport capability) value of the fabric body formed thereby is greater than or equal to 100%, the unidirectional moisture conduction capacity is significantly improved, and the fabric has good unidirectional moisture conduction function.

[0159] Embodiment 3:

[0160] It is required to design a single-sided fabric with unidirectional moisture conduction function, made of polyester, with a certain elasticity and smoothness. The fabric is required to be delicate, soft, and high-end, with a gram weight of about 140GSM and a width of 160cm.

[0161] 1. Yarn selection:

[0162] The yarn is made of filament PES 75D / 72F FD DTY (75D polyester low elastic yarn).

[0163] 2. Model used:

[0164] The specific machine models are as follows: Weft knitting single-sided circular machine, 36G, 34 inches. It can weave the fabric more delicate and high-end.

[0165] 3.Weaving process: Weaving into single-sided jacquard cloth.

[0166] 4. Adjust the length between the horizontal density and the vertical density to design the ratio of the length of the evaporation unit to the length of the skin contact unit in the unit coil to be ≥1.20:

[0167] According to experience, the yarn diameter D of 75D polyester low-elastic yarn after dyeing and finishing is ≈ 0.19mm; the finished product width is required to be 160cm, and the finished product transverse density Pa can be calculated as follows:

[0168] Pa = 24 (vertical lines / cm)

[0169] In order for the fabric to have a unidirectional moisture conduction function, the total length of the evaporation unit S1: the total length of the skin contact unit S2 must be ≥ 1.2, that is:

[0170]

[0171] Substituting D=0.19mm, Pa=24, we can obtain Pb≤39.5.

[0172] That is, during the dyeing and finishing process, it is only necessary to control the longitudinal density Pb ​​value below 39.5, and the OWTC (one way transport capability) value of this fabric will be greater than 100%.

[0173] 5. Actual finished product data:

[0174] Width: 160cm, weight: 140g, transverse density Pa value is 24, longitudinal density Pb ​​value is 29, satisfying the condition of total length of evaporation unit S1: total length of skin-contacting unit S2 ≥ 1.20. Yarn contact angle θu is 67°. This fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capability OWTC (one way transport capability) of the fabric measured this time is 106%.

[0175] Comparative Example 3:

[0176] The same yarn as in Example 3: filament PES 75D / 72F FD DTY was used to weave a single-sided jacquard fabric with a gram weight of about 140 GSM and a width of 160 cm, but the length between the horizontal density and the vertical density was adjusted, and the total length S1 of the evaporation unit: the total length S2 of the skin-contacting unit was less than 1.20.

[0177] Actual finished product data:

[0178] Width: 160cm, weight: 140g, total length of evaporation unit S1: total length of skin contact unit S2 < 1.20. Yarn contact angle θu is 83°. This fabric was measured according to the standard AATCC 195 "Liquid Moisture Management Properties of Textile Fabrics". The one-way moisture transport capability OWTC (one way transport capability) of the fabric measured this time is 76%. This fabric does not have one-way moisture transport capability.

[0179] It can be seen from the test results of Example 3 and Comparative Example 3 that the single-sided knitted fabric of the present invention, according to different yarns, by adjusting the length of the transverse density (Pa, longitudinal row / cm) and longitudinal density (Pb, horizontal row / cm) of the fabric, makes the total length S1 of the evaporation unit: the total length S2 of the skin-contacting unit ≥ 1.20, and the OWTC (one way transport capability) value of the fabric body thus formed is greater than or equal to 100%, the unidirectional moisture conduction capacity is significantly improved, and the fabric has good unidirectional moisture conduction function.

[0180] In summary, the present invention designs a structure of a fabric with differentiated water-conducting capacity by adjusting the length of the transverse density (Pa, longitudinal row / cm) and the longitudinal density (Pb, horizontal row / cm) of the fabric so that the total length S1 of the evaporation unit: the total length S2 of the skin-contacting unit ≥ 1.20, which can effectively improve the water-conducting capacity of the fabric, keep the human skin dry when sweating, and be comfortable, light and thin to wear, with better comfort.

[0181] 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, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to 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 single-sided knitted fabric with differentiated water-conducting ability, comprising a fabric body, wherein the fabric body has a skin-contacting surface and a clothing surface, characterized in that: The fabric body is a single-sided knitted fabric woven by at least one yarn in a loop, the skin-contacting surface is composed of a plurality of skin-contacting units, and the clothing surface is composed of a plurality of evaporation units; The evaporation unit includes an evaporation column L 1. Evaporation needle arc L 2 and evaporative precipitation arc L 3. Skin-fitting unit includes skin-fitting needle arc L 4 and skin-friendly sedimentation arc L 5. Evaporation column L 1. Evaporation needle arc L 2. Evaporation and precipitation arc L 3. Skin-fitting needle arc L 4 and skin-friendly sedimentation arc L 5 is a unit coil formed by weaving the same yarn; In a unit coil, by adjusting the horizontal density and vertical density of the fabric body, the ratio of the length of the evaporation unit to the length of the skin-contacting unit is set to be ≥1.2, and the diameter of the yarn d is <1mm, so that the liquid water one-way transfer index OWTC of the fabric body is ≥100%; The yarn is cellulose fiber or chemical fiber, and after the yarn forms a finished fabric body, the contact angle of the yarn is less than or equal to 70°. The fabric body is woven from two different yarns, one of which is a polyurethane elastic fiber.

2. The single-sided knitted fabric with differentiated water-conducting ability according to claim 1, characterized in that: In a unit coil, An evaporation column The length is calculated as: = Right now: = Where: B-circle height; Pb-longitudinal density of the fabric body; d – yarn diameter; One evaporation needle arc The length is calculated as: = Right now: = An evaporation arc The length is calculated as: = Right now: = Where: G-arc diameter of unit coil; -The arc corresponding to the arc of the evaporation needle; -The arc corresponding to the evaporation precipitation arc; Pa-the horizontal density of the fabric body; A skin-friendly needle braid The length is calculated as: = -2 Right now: = A skin-closed sedimentation arc The length is calculated as: = - Right now: = .

3. The single-sided knitted fabric with differentiated water-conducting ability according to claim 2, characterized in that: In a unit coil, the ratio of the length S1 of the evaporation unit to the length S2 of the skin contact unit is calculated as follows: Right now: .

4. The single-sided knitted fabric with differentiated water-conducting ability according to claim 3, characterized in that: On the fabric body, the transverse density Pa is 5-40 longitudinal rows / cm, and the longitudinal density Pb ​​is 10-60 longitudinal rows / cm.

5. The single-sided knitted fabric with differentiated water-conducting ability according to claim 1, characterized in that: The fabric body is a single-sided plain fabric or a single-sided jacquard fabric.

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