Sweat wicking flat knit upper fabric and knitting method

Abstract

The present application relates to a kind of sweat lead-out flat knitting shoe upper fabric and weaving method, fabric is woven by two different single-fiber linear density yarn A, yarn B and hot melt multifilament C, and is formed by loop, tuck and float to form shoe upper fabric, the surface of shoe upper fabric is granular microconvex structure, the front of fabric is formed by yarn A protrusion, yarn B, hot melt multifilament C forms microconcave in the front of fabric.The unidirectional sweat conducting performance of flat knitting shoe upper fabric prepared by the present application is good, can keep the dryness inside shoe cavity, improves the perspiration performance of shoe upper fabric and has moisture permeability and air permeability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of knitted shoe upper fabric, and particularly relates to a sweat-guiding flat-knitted shoe upper fabric and a knitting method. BACKGROUND

[0002] Sports shoes are important accessories for people when they are doing physical fitness. The comfort of shoes affects the comfort of people's sports. The shoe upper material with the functions of moisture permeability, air permeability, sweat guiding and sweat releasing can keep the shoe cavity dry and prevent fungal infection of the feet, and thus is favored by people. The shoe upper material available on the market at present, such as the shoe upper material disclosed in the invention patent with the publication number CN110924183A, comprises, from inside to outside, a base cloth, an impregnation layer, a foaming layer and a surface layer. The realization of the antibacterial function depends on the treatment of each layer of fabric by a functional additive. The durability and washability of the additive are poor. With the increase of the use time, the antibacterial ability decreases. Meanwhile, the shoe upper material has many layers and thick fabric, and lacks lightness, which is not conducive to the comfort of wearing. The invention patent with the publication number CN105266255A discloses a sports shoe upper material, which is composed of an upper cotton cloth, a middle composite fabric and a lower cotton cloth. The sports shoe upper material has a certain air permeability, but the production efficiency of the multi-layer structure is low, and the processing method of adhesion is not conducive to long-term use. The shoe upper fabric cannot be formed at one time. SUMMARY

[0003] The present application is to solve the problem that the poor moisture permeability and air permeability of the existing shoe upper material cause the feet to sweat and the shoe cavity to be too wet, resulting in bacterial reproduction and discomfort in wearing. The present application provides a flat-knitted shoe upper fabric with air permeability and sweat releasing and a knitting method.

[0004] The present application adopts the following technical scheme: a sweat-guiding flat-knitted shoe upper fabric, which is knitted by yarn A and yarn B with different single-fiber linear densities and hot-melt multifilament C. The front surface of the shoe upper fabric has a granular micro-convex structure. The convex shape of the front surface of the shoe upper fabric is formed by yarn A, and the micro-concave part of the front surface of the shoe upper fabric is formed by yarn B and hot-melt multifilament C.

[0005] Further, the difference between the single-fiber linear densities of yarn A and yarn B is at least 0.3.

[0006] Further, the single-fiber linear density of yarn A is 0.2-2.0, and the single-fiber linear density of yarn B is 0.8-3.0.

[0007] Further, the porosity of the front surface of the shoe upper fabric formed after shrinkage after machine knitting is 2%-5%.

[0008] Further, on the same column of the front surface of the shoe upper fabric, the number ratio of the convex-shaped loops formed by yarn A to the micro-concave part loops formed by yarn B and hot-melt multifilament C is at least 3:1.

[0009] A weaving method of sweat leading out of a flat knitting shoe upper fabric, the minimum organization cycle flower width is 2, and the flower height is 6, comprising the steps of:

[0010] (1) yarn A is spaced into loops between 2, 5 front needle beds, uniformly into loops on 3, 6 front needle beds, and spaced into loops or tuck loops on the back needle bed;

[0011] (2) yarn B, hot melt multifilament C are jointly spaced into loops between 1, 4 front needle beds and the back needle bed.

[0012] Further, the number of front side loops in the minimum cycle of the fabric is an even multiple of the number of back side loops.

[0013] Further, the front side of the fabric is composed of large loops of yarn A with small single fiber density, yarn B and hot melt multifilament C are knitted into loop connection points on 1, 4 front needle beds to form small loops on the front side; the back side of the fabric is mainly composed of large loops of yarn B with large single fiber density, yarn A is knitted into loop or tuck loop connection points on 3, 6 back needle beds to form small loops or exist in the form of suspended arc on the back side.

[0014] The advantages of the present application are as follows:

[0015] (1) The shoe upper fabric prepared by the present application is formed by flat knitting of yarn A and yarn B with different single fiber densities, the number of loops formed by yarn A with small single fiber density on the front side of the fabric is more than that on the back side, and the number of loops formed by yarn B with large single fiber density and hot melt multifilament C on the back side of the fabric is more than that on the front side, so the front side of the fabric is mainly composed of yarn A with small single fiber density, and the back side is mainly composed of yarn B with large single fiber density. When the shoe cavity contains water vapor, the water vapor spontaneously conducts from the loose back side to the tight front side by capillary siphon effect, and evaporates and diffuses on the front side of the fabric, realizing the evaporation and quick drying on the outside through the thermal convection of external air, thereby ensuring the temperature and humidity in the shoe cavity, and making the shoe upper fabric realize the effect of one-way sweat leading by the inconsistency of the single fiber densities of the yarns on both sides and the difference in the number of loops.

[0016] (2) The present application adopts the knitting flat knitting forming technology, realizes the granular micro convex structure on the surface of the shoe upper fabric and the local connection of the front and back sides through different knitting structures of loop formation, tuck loop formation and float, and makes the shoe upper material not only have various structures and simple process, but also have light weight and high production efficiency through one-time forming. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the loop diagram of the front and back sides of the shoe upper fabric in the first embodiment of the present application.

[0018] Figure 2 is the knitting diagram of the shoe upper fabric in the first embodiment of the present application.

[0019] Figure 3 This is a weaving diagram of the shoe upper fabric in Embodiment 2 of the present invention.

[0020] Figure 4 This is a schematic diagram of the concave-convex distribution on the side of a shoe upper fabric according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the sweat-wicking mechanism of the shoe upper fabric prepared according to the present invention. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0023] In this invention, the linear density of a single fiber = the linear density of the yarn (D) / the number of fibers in the yarn (F). Example 1:

[0024] A sweat-wicking cross-knitted shoe upper fabric is made of two yarns with different single fiber linear densities and hot-melt multifilaments through cross-knitting. The fabric achieves a granular micro-protrusion structure on the surface of the shoe upper fabric and local connection between the front and back sides through different weaving structures of loops and floats. The front side of the shoe upper fabric is formed by yarn A in a raised shape, while yarn B and hot-melt multifilament C form a micro-concave part on the front side of the fabric.

[0025] Yarn A is 700D / 3200F microfiber polyester with a single fiber linear density of 0.22, while yarn B is 600D / 288F polyester with a single fiber linear density of 2.08. The difference in single fiber linear density between the two different yarns is 1.86 > 0.3.

[0026] Hot melt multifilament C is a 220D polyester sheath-core low melting point filament.

[0027] like Figure 1 The diagram shows the loop pattern of the shoe upper fabric. In the minimum cycle of the upper fabric, the number of loops on the front is twice that on the back. Therefore, due to the shrinkage of the back loops as they are removed from the machine, the front loops shrink and bulge at the unconnected points. Analysis using ImageJ software shows that the porosity of the fabric's front surface is 2.25%, which is beneficial for the fabric's breathability. On the front side of the upper fabric, large loops are formed by yarn A with low single-fiber linear density. Yarns B and hot-melt multifilament C are woven into loop connection points on the 1st and 4th needle beds, forming small loops on the front. On the back side, large loops are mainly formed by yarn B with high single-fiber linear density. Yarn A is woven into loop connection points on the 3rd and 6th needle beds, forming small loops on the back. The large loops of yarn A on the front are arranged more tightly and slightly bulge, forming bulge III. The small loops formed by yarns B and hot-melt multifilament C are hidden in the fabric surface, forming micro-concave IV. The side view of the concave-convex effect is shown below. Figure 4As shown. On the same longitudinal column of the fabric's front side, the raised loops formed by yarn A ( Figure 1 I) Forms a micro-recessed loop with yarn B and hot-melt multifilament C ( Figure 1 (ii) The quantity ratio is 3:1. The large loops of yarn B and hot melt multifilament C on the reverse side are arranged relatively loosely, while the small loops of yarn A are hidden on the fabric surface, making the reverse side of the fabric relatively flat.

[0028] Weaving method: such as Figure 2 As shown, the minimum weave repeat width is 2 and the repeat height is 6. Yarn A forms loops at intervals on the front needle beds of rows 2 and 5, and forms even loops on the front needle beds of rows 3 and 6, and at intervals on the back needle beds; yarn B and hot-melt multifilament C together form loops at intervals on the front and back needle beds of rows 1 and 4. Yarn A forms loops at the knitting section connection points of rows 3 and 6, while yarn B and hot-melt multifilament C form loops at the knitting section connection points of rows 1 and 4. Example 2:

[0029] A sweat-wicking cross-knitted shoe upper fabric is made of two yarns with different single fiber linear densities and hot-melt multifilaments through cross-knitting. The shoe upper fabric achieves a granular micro-protrusion structure on the surface of the shoe upper fabric and local connection between the front and back sides through different knitting structures such as looping, tucking, and floating.

[0030] Yarn A is 700D / 3200F microfiber polyester with a single fiber linear density of 0.22, while yarn B is 600D / 288F polyester with a single fiber linear density of 2.08. The difference in single fiber linear density between the two different yarns is 1.86 > 0.3.

[0031] Hot melt multifilament C is a 220D polyester sheath-core low melting point filament.

[0032] In the minimum repeat of the fabric, the number of loops on the front side is four times that on the back side. Therefore, due to the shrinkage of the loops formed and gathered on the back side, the loops on the front side shrink and bulge at the unconnected points. Analysis and measurement using ImageJ software shows that the porosity of the fabric surface on the front side is 2.25%, which is beneficial to the fabric's breathability. On the front side of the shoe upper fabric, large loops are formed by yarn A with low single-fiber linear density. Yarns B and hot-melt multifilament C are woven into loops at the connection points on the 1st and 4th needle beds, forming small loops on the front side. On the back side, large loops are mainly formed by yarn B with high single-fiber linear density. Yarn A is woven into loops at the connection points on the 3rd and 6th needle beds, existing in a suspended arc form on the back side. The large loops of yarn A on the front side are arranged more tightly and slightly bulge, forming bulge III. The small loops formed by yarns B and hot-melt multifilament C are hidden in the fabric surface, forming micro-concave IV. The side view of the concave-convex effect is shown below. Figure 4As shown. On the same longitudinal column of the fabric's front side, the ratio of the number of raised loops formed by yarn A to the number of slightly concave loops formed by yarn B and hot-melt multifilament C is 3:1. On the reverse side, the large loops of yarn B and hot-melt multifilament C are more loosely arranged, yarn A exists in a suspended arc form, and the reverse side of the fabric is relatively flat.

[0033] Weaving method:

[0034] like Figure 3 As shown, the minimum weave repeat width is 2 and the repeat height is 6. Yarn A forms loops at intervals on the front needle beds of rows 2 and 5, and forms even loops on the front needle beds of rows 3 and 6, with loops clustered at intervals on the back needle beds; yarn B and hot-melt multifilament C together form loops at intervals on the front and back needle beds of rows 1 and 4. Yarn A forms loops at the knitting section connection points of rows 3 and 6, while yarn B and hot-melt multifilament C form clustered loops at the knitting section connection points of rows 1 and 4.

[0035] The upper fabric has a large contact area with the human foot, with the reverse side of the fabric serving as the inner side of the upper and the right side as the outer side. The surface of the upper fabric has a textured, granular appearance due to shrinkage, but the characteristics of the knitted loops still allow for some porosity, improving breathability. When the human body is in a hot state, it will spontaneously sweat. The sweat vapor first comes into contact with yarn B on the inner side of the upper. Yarn B has a high single-fiber density and is hydrophobic, utilizing the capillary effect... Figure 5 As shown, sweat and moisture are spontaneously transported through the coarse capillary (b) to the fine capillary (a), thereby keeping the inside of the shoe cavity dry. At the same time, the conducted sweat vapor diffuses and evaporates on the front of the fabric, and through the heat convection of the outside air, the outer side is evaporated and dried quickly, thus ensuring the temperature and humidity inside the shoe cavity.

Claims

1. A sweat wicking flat knit upper fabric, characterized by: The fabric is knitted by different single yarn density of yarn A and yarn B and hot melt multifilament C, the grainy micro convex structure of the upper fabric front surface is formed by the yarn A, the yarn B and the hot melt multifilament C, wherein the convex loop of the yarn A is formed on the upper fabric front surface, the micro concave loop of the yarn B and the hot melt multifilament C is formed on the upper fabric front surface; The single yarn density of the yarn A is less than the yarn B, the difference between the single yarn density of the yarn A and the yarn B is at least 0.3, the single yarn density of the yarn A is 0.2-2.0, the single yarn density of the yarn B is 0.8-3.0, the convex loop of the yarn A and the micro concave loop of the yarn B and the hot melt multifilament C in the same column of the upper fabric front surface is at least 3:1; The minimum stitch cycle width of the upper fabric is 2, the height is 6, and the steps include: (1) the yarn A is looped between the front needle beds of 2 and 5, looped on the front needle beds of 3 and 6, and looped or tacked on the back needle bed; (2) the yarn B and the hot melt multifilament C are looped on the front needle beds of 1 and 4 and the back needle bed; The ratio of the number of front surface loops to the number of back surface loops formed in the minimum cycle of the upper fabric is at least 2:1, the large loop of the yarn A with small single yarn density is formed on the fabric front surface, the small loop of the yarn B and the hot melt multifilament C is formed on the front surface by the loop connection point knitted on the front needle beds of 1 and 4, the large loop of the yarn B with large single yarn density is formed on the fabric back surface, the small loop of the yarn A or the arc suspension is formed on the back surface by the loop or tacking connection point knitted on the back needle beds of 3 and 6.

2. The sweat-directing herringbone footwear upper fabric of claim 1, wherein: The surface porosity of the upper fabric front surface formed by the shrinkage after the machine is stopped is 2%-5%.

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