Anti-skid yarn with net-shaped wrapping structure

Abstract

The utility model discloses an anti-skid yarn with a net-shaped wrapping structure. The anti-skid yarn comprises a yarn core, a skin layer and a lubricating oil layer, the yarn core plays a role of a framework, the skin layers are divided into a first skin layer and a second skin layer which are wound on the periphery of the yarn core respectively, a fused cross-linking part is formed at the staggered position of the two skin layers, and the lubricating oil layer is located outside the skin layers. The first skin layer and the second skin layer are attached to the outer layer of the yarn core through the double-wrapping technology, the yarn core is wrapped with multiple strands of fibers, a rough surface is formed on the surface of the yarn, and therefore the friction resistance of the anti-skid yarn is effectively improved. The lubricating oil layer enables fibers of the anti-skid yarn to be smooth in the weaving process, yarn blocking and needle breaking are avoided, then the lubricating oil layer is separated from the yarn after high-temperature setting or dyeing and finishing, and the anti-skid performance of the finished fabric can be improved in a multiplied mode.

Description

Technical Field

[0001] The utility model relates to the technical field of textiles, in particular to an anti-slip yarn with a mesh wrapping structure. Background Art

[0002] The currently known or published patents or papers related to spandex (PU, polyurethane) PA or PET all use spandex (hereinafter referred to as SP) or polyurethane (hereinafter referred to as PU) as the yarn core, nylon (hereinafter referred to as PA) or polyester (hereinafter referred to as PET) and other fiber sheaths. The rabbets of SP and PU are about 2-5 times. The main purpose is to obtain the elastic properties of SP or PU, and the coated PA or PET and other fiber sheaths are to lock the rabbets and protect SP or PU by coating it as a yarn core to prevent the friction coefficient from being too large and not conducive to weaving (the outer layer of PA or PET will reduce friction and make the weaving process smoother).

[0003] Therefore, the fabric obtained by the above method has a smoother surface, but some specific sports fields require higher friction, such as some sports socks, which require high friction yarns on the soles of the socks. There are currently two ways to increase friction:

[0004] The first method is to apply silicone. As labor costs are becoming more and more expensive, the cost of applying silicone has also risen.

[0005] The second method is to weave a few circles of anti-skid yarn on the soles of the feet to increase friction, such as Japan Teijin's NANOFRNT anti-skid yarn, nanofiber process route; American companies use silicone process route, and Italian companies use rubber band process route. However, these imported anti-skid yarns have common pain points. First, the price is too expensive, more than 600 yuan per kilogram, which is not conducive to market promotion. Second, the yarn is too astringent and difficult to weave, and it is easy to block the yarn or break the needle, which is not conducive to the weaving of the finished product.

[0006] Therefore, how to obtain anti-slip yarn with a larger friction coefficient, overcome the friction problem in the weaving process of the anti-slip yarn, reduce the difficulty of the weaving process (avoid yarn blockage or needle breakage), and make the final fabric have the expected anti-slip effect, is the technical problem to be solved in this case. Utility Model Content

[0007] The utility model aims to provide a mesh-wrapped anti-skid yarn, which makes the yarn have a high friction coefficient and solves the pain point of smooth weaving.

[0008] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0009] A mesh-wrapped anti-skid yarn comprises a yarn core, a cortex and a lubricating oil layer; the yarn core acts as a skeleton and is used for winding and wrapping the cortex; the cortex is divided into a first cortex and a second cortex, both of which are formed by spinning and wrapping the yarn core, the first cortex is wound around the outer periphery of the yarn core, the second cortex is wound around the outer periphery of the first cortex, and the first cortex and the second cortex are fixed to the surface of the yarn core by hot melting; and after the double-layer winding of the first cortex and the second cortex, the staggered positions of the two cortexes form a melted cross-linked portion; the lubricating oil layer is located outside the cortex, and the lubricating oil layer is used for smooth weaving to prevent yarn breakage and needle blockage, and the lubricating oil layer can be peeled off from the cortex after high-temperature shaping or dyeing and finishing.

[0010] Compared with the prior art, the mesh wrapping structure anti-slip yarn using the above technical solution has the following beneficial effects:

[0011] 1. The above-mentioned anti-slip yarn has a high friction coefficient, so that the textile product has great friction on both sides. The socks made have friction on both sides, and lock the relative movement between the sole and the socks, and the socks and the soles.

[0012] 2. The lubricating oil layer uses modified fiber oil, which can make the anti-slip yarn smooth during the weaving process without yarn blockage or needle interruption. After high-temperature shaping or dyeing and finishing, the lubricating oil layer is separated from the yarn, so that the finished fabric can restore the anti-slip effect.

[0013] 3. The yarn preparation method has simple process parameters, and the preparation process is easy to control and operate. The yarn core acts as a skeleton for attaching the outer skin yarn. The first skin layer and the second skin layer are attached to the outer layer of the yarn core using a double-wrapping process, allowing multiple strands of fiber to wrap around the outside of the yarn core, forming a rough surface on the yarn surface, thereby effectively improving the friction resistance of the anti-slip yarn.

[0014] Preferably, the first skin layer and the second skin layer are both made of two-component low-melting-point PU fiber. The low-melting-point PU fiber is wrapped on the surface of the yarn core not for elasticity but to obtain its friction resistance. Since the low-melting-point PU fiber has elasticity and a high pull ratio, the PU fiber will automatically tend to the core layer when it shrinks, and the PET or PA originally in the yarn core will be squeezed to the skin layer, and no friction will be shown. A low pull ratio can ensure that the PU fiber is in the skin layer. Therefore, the lower the pull ratio of the skin fiber, the better, so as to effectively improve the friction resistance.

[0015] Preferably, the two-component low-melting-point PU fiber is made by spinning and drawing one group of low-melting-point PU and another group of PU through a parallel composite spinning process or a skin-core composite spinning process. In order to allow the low-melting-point PU component at the overlapping part of the two skin layers to melt and condense at a high temperature and the PU component to not reach the melting temperature before the yarn is broken, the continuity of the fiber is ensured.

[0016] Preferably, the PU stretch ratio of the first or second cortex is controlled within 1.2, and the twist is 150-800 twists per meter. The reason why the cortex has a 1.2 rabbet is to enable the low-melting-point PU fiber to be unwound smoothly; the twist is 150-800 twists per meter. In order to increase the surface ratio of the low-melting-point PU fiber, the fiber can have less twist if it is thick, and more twist if it is thin.

[0017] Preferably, the first skin layer is wound along the same rotation direction when covering the surface of the yarn core, and the second skin layer is wound in the opposite direction to the first skin layer when covering. Figure 2 and Figure 3 , so during the interlacing of the two cortical layers, a cross-linking section is formed (see Figure 1 ), the staggered point is used to connect the PU fibers of the two layers of skin together, so that the two layers of skin can be fixed more firmly, while also increasing the surface roughness to further increase the friction resistance.

[0018] Preferably, the first skin layer is wound along the same rotation direction when covering the surface of the yarn core, and the second skin layer is wound in the same direction as the first skin layer when covering. Figure 4 ), the density of the cross-linked portion can be controlled by controlling the pitch, so that the surface of the anti-slip yarn has a slightly rough texture.

[0019] Preferably, the yarn core is made of PET or PA fiber. PET or PA fiber has weaker shrinkage performance than PU, so using PET or PA fiber as the yarn core can effectively ensure that there will not be too much separation between the fiber skeleton and the PU skin layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the anti-slip yarn in the utility model (the winding directions of the first skin layer and the second skin layer are opposite).

[0021] Figure 2 It is a schematic diagram of the structure of the double-layer covered yarn in the utility model (PU adopts a parallel composite spinning process).

[0022] Figure 3 It is a schematic diagram of the structure of the double-skin covered yarn in the utility model (PU adopts a skin-core structure composite spinning process).

[0023] Figure 4 It is a schematic diagram of the structure of the anti-slip yarn in the utility model (the first skin layer and the second skin layer are wound in the same direction).

[0024] Reference numerals: 1, double-skin covered yarn; 10, yarn core; 11, first skin layer; 12, second skin layer; 2, anti-slip yarn; 20, cross-linking portion. DETAILED DESCRIPTION

[0025] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0026] See also Figure 1 , a mesh wrapped structure anti-slip yarn, comprising a yarn core 10, a skin layer and a lubricating oil layer;

[0027] The yarn core 10 acts as a skeleton for wrapping the cortex;

[0028] The cortex is divided into a first cortex 11 and a second cortex 12. Both cortexes 11 and 12 are formed by spinning around a yarn core 10. The first cortex 11 is wound around the outer periphery of the yarn core 10, and the second cortex 12 is wound around the outer periphery of the first cortex 11. The first cortex 11 and the second cortex 12 are fixed to the surface of the yarn core 10 by hot melting. The first cortex 11 and the second cortex 12 are both made of two-component low-melting-point PU fiber. The PU stretching ratio of the first cortex 11 or the second cortex 12 is controlled within 1.2, and the twist is 150-800 twists per meter.

[0029] After the first skin layer 11 and the second skin layer 12 are double-layered, the staggered positions of the two skin layers form a melted cross-linked portion 20;

[0030] The first skin layer 11 is wound along the same rotation direction when covering the surface of the yarn core 10 , and the second skin layer 12 is wound in the opposite direction to the first skin layer 11 when covering.

[0031] The lubricating oil layer adopts modified fiber oil agent, and the lubricating oil layer is located outside the cortex. The lubricating oil layer is used for smooth weaving to prevent yarn breakage and needle blockage, and the lubricating oil layer can be peeled off from the cortex after high-temperature setting or dyeing and finishing.

[0032] The yarn core 10 is made of PET or PA fiber.

[0033] When PET is selected as the yarn core 10, the above-mentioned anti-slip yarn has the following preparation steps:

[0034] S1: PET DTY 150D fiber is selected as the yarn core 10; bicomponent low melting point PU fiber 140D is used as the first skin layer 11, which is rotated and wound around the yarn core 10, and the PU stretching ratio is controlled within 1.1 so that it can be unwound, and the twist is 200 twists per meter; similarly, bicomponent low melting point PU fiber 50D is used as the second skin layer 12, and the second skin layer 12 is rotated and wound around the first skin layer 11 wrapped above, and the PU stretching ratio is controlled within 1.2 so that it can be unwound, and the twist is 800 twists per meter; the double-skin covered yarn 1 wrapped and wound by the double skin layer is manufactured.

[0035] S2: The single yarn of the double-skin covered yarn 1 obtained by S1 is put into a high-temperature hot box tube to make the two groups of two-component low-melting-point PU fibers cross-linked and melted with each other, and the first skin layer 11 and the second skin layer 12 are melted and combined at the cross-linking portion 20 thereof, and adhere to the fiber with PET as the core; the single yarn fineness D is 340D, the temperature T of the hot box tube is 220°C, and the length L of the hot box tube is 1.2 meters. According to the formula L*T / D*V>0.005 summarized from numerous experiments, the fiber passing speed V is 140 meters / minute.

[0036] S3: The yarn after hot melting of S2 is coated with modified fiber oil and then wound into a bobbin; the modified fiber oil is 65% polyoxyethylene glycol, 32% high molecular weight polyether, 1% antistatic agent, 1% emulsifier, and 1% preservative; the amount of modified fiber oil added is 3%wt of the anti-slip yarn.

[0037] The yarn prepared in Example 1 is used to knit socks in a manner of knitting 4 needles of anti-skid yarn on the outer layer of the sole of the foot with 4 needles of cotton yarn for a total of 10 turns, and a small part is used locally, so that the yarn does not stop blocking the needles during weaving without slowing down. After the finished socks are finalized, they are tested by Tianfangbiao Testing and Certification Co., Ltd. and the National Knitting Product Quality Inspection and Testing Center according to HG / T3780-2005 method 2. The test result shows that the anti-skid value of the anti-skid new energy (dry process) is 0.8 (the standard requirement for superior products is ≥0.7).

[0038] When PA is selected as the yarn core 10, the preparation steps of the above-mentioned anti-slip yarn are as follows:

[0039] S1: PA DTY 50D fiber is selected as the yarn core 10; bicomponent low melting point PU 50D fiber is used as the first skin layer 11, which is rotated and wound around the yarn core 10, with a twist of 500 twists per meter; similarly, bicomponent low melting point PU fiber 50D is used as the second skin layer 12, which is rotated and wound around the first skin layer 11 wrapped above, with a twist of 500 twists per meter; and the double-skin covered yarn 1 wrapped and wound by the double skin layer is manufactured.

[0040] S2: The single yarn of the double-skin covered yarn 1 prepared in S1 is put into a high-temperature hot box tube so that the two groups of two-component low-melting-point PU fibers are cross-linked, melted and adhered to the fiber with PA as the core; the single yarn fineness D is 140D, the temperature T of the hot box tube is 200°C, the length L of the hot box tube is 1.2 meters, and according to the formula L*T / D*V>0.005 summarized from countless experiments, the fiber passing speed V is 340 meters / minute.

[0041] S3: The yarn after hot melting of S2 is coated with modified fiber oil and then wound into a bobbin; the modified fiber oil is 65% polyoxyethylene glycol, 32% high molecular weight polyether, 1% antistatic agent, 1% emulsifier, and 1% preservative; the amount of modified fiber oil added is 2%wt of the anti-slip yarn.

[0042] The yarn prepared in Example 2 is used to weave pantyhose, and the stress-bearing part of the sole of the foot is fully woven, and the other parts are PA, and the speed is not reduced and the yarn is not blocked during weaving. After the finished pantyhose is finalized, it is tested by Tianfangbiao Testing and Certification Co., Ltd. and the National Knitting Product Quality Inspection and Testing Center according to HG / T3780-2005 method 2. The test result shows that the anti-slip value of the anti-slip energy (dry process) is 1.3 (the standard requirement for superior products is ≥0.7).

[0043] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A mesh wrapping structure anti-slip yarn, characterized in that: It comprises a yarn core (10), a skin layer and a lubricating oil layer; The yarn core (10) acts as a skeleton and is used for wrapping the cortex; The cortex is divided into a first cortex (11) and a second cortex (12), both of which are formed by spinning around a yarn core (10), the first cortex (11) is wound around the outer periphery of the yarn core (10), and the second cortex (12) is wound around the outer periphery of the first cortex (11), and the first cortex (11) and the second cortex (12) are fixed to the surface of the yarn core (10) by hot melting; After the first skin layer (11) and the second skin layer (12) are double-layered, the staggered positions of the two skin layers form a melted cross-linked portion (20); The lubricating oil layer is located outside the cortex, and is used for smooth weaving to prevent yarn breakage and needle blockage, and the lubricating oil layer can be peeled off from the cortex after high-temperature shaping or dyeing and finishing.

2. The mesh wrapping structure anti-slip yarn according to claim 1, characterized in that: The first skin layer (11) is made of two-component low-melting-point PU fiber.

3. The mesh wrapping structure anti-slip yarn according to claim 1, characterized in that: The second skin layer (12) is made of two-component low-melting-point PU fiber.

4. The anti-slip yarn with a mesh wrapping structure according to claim 2 or 3, characterized in that: The two-component low-melting-point PU fiber is made by spinning and drawing one group of low-melting-point PU and another group of PU through a parallel composite spinning process or a skin-core structure composite spinning process.

5. The anti-slip yarn with a mesh wrapping structure according to claim 2 or 3, characterized in that: The PU stretching ratio of the first skin layer (11) or the second skin layer (12) is controlled within 1.2, and the twist is 150-800 twists per meter.

6. The anti-slip yarn with a mesh wrapping structure according to claim 1, characterized in that: The first skin layer (11) is wound along the same rotation direction when covering the surface of the yarn core (10), and the second skin layer (12) is wound in the opposite direction to the first skin layer (11) when covering.

7. The anti-slip yarn with a mesh wrapping structure according to claim 1, characterized in that: The first skin layer (11) is wound along the same rotation direction when covering the surface of the yarn core (10), and the second skin layer (12) is wound in the same direction as the first skin layer (11) when covering.

8. The anti-slip yarn with a mesh wrapping structure according to claim 1, characterized in that: The yarn core (10) is made of PET or PA fiber.

Images