Ultra-thin coated yarn manufacturing method and ultra-thin coated yarn structure

Abstract

The invention provides an ultra-thin coated yarn manufacturing method and a structure thereof, the ultra-thin coated yarn manufacturing method comprises the following steps: (a) a yarn twisting step, (b) a negative pressure spraying step, (c) a heating step, (d) a cooling step and (e) a rolling step, the ultra-thin coated yarn structure comprises a twisted plied yarn and a coating, the twisted yarn comprises a plurality of single yarns which are twisted together, the single yarns are mutually twisted, and the coating is coated on the outer surface of the twisted yarn in a precise coating manner by a negative pressure spray vacuum process; therefore, the ultrathin coated yarn has better lightness, thinness, breathability, comfort, flexibility, plasticity and hydrophobicity, and can be dyed and subjected to sublimation transfer printing and dyeing, and the strength of a fabric woven by the ultrathin coated yarn is greatly improved.

Description

Technical Field

[0001] The present invention relates to a coated yarn, and more particularly to a method for manufacturing an ultra-thin coated yarn and its structure. Background Art

[0002] As is well known, yarns for industrial or shoe uppers are commonly TPU (thermoplastic polyurethane) yarns, polyester (polyester) yarns, high-strength yarns, etc. These yarns are processed into fabrics. However, each of these yarns has its own disadvantages. Among them, TPU yarns are too heavy, reducing the movement efficiency, and are not easy to dye and are not heat-resistant. Polyester yarns have weak strength and the fabric is easily worn and torn. High-strength yarns are not easy to shape and have poor comfort.

[0003] In order to increase the strength of the yarn, a thermoplastic resin is coated on the surface of the yarn. Such coated yarns are usually coated using an extruder through a die. However, the coating amount is difficult to adjust, especially difficult to adjust for small amounts of coating. Therefore, the coated layer cannot be too thin and only coated yarns with a thickness of 200 deniers or more can be prepared. It is difficult to achieve a coated yarn with characteristics such as light weight, breathability, stiffness, flexibility, and plasticity. Summary of the Invention

[0004] In view of the above-mentioned disadvantages of the coated yarn in the prior art, the present invention provides a method for manufacturing an ultra-thin coated yarn and its structure. The method for manufacturing the ultra-thin coated yarn includes the following steps: (a) a yarn twisting step of twisting multiple single yarns through a twisting device to form a twisted ply yarn; (b) a negative pressure spraying step of conveying the twisted ply yarn after twisting to a precision coating device, rolling it through a roller provided in the precision coating device, and performing precision coating and painting on the outer surface of the twisted ply yarn through a negative pressure spraying and vacuum process by a negative pressure spraying device provided in the precision coating device to complete the precision coating and painting; (c) a heating step of conveying the twisted ply yarn with the outer surface coated with the coating to a heating device for heating and curing; (d) a cooling step of conveying the cured twisted ply yarn to a cooling device for cooling to form an ultra-thin coated yarn; (e) a winding step of winding the formed ultra-thin coated yarn into a roll. The structure of the ultra-thin coated yarn includes: a twisted ply yarn including multiple single yarns twisted together, and the multiple single yarns are wound around each other; and a coating, which is precisely coated on the outer surface of the twisted ply yarn through a negative pressure spraying and vacuum process, and then formed after heating, curing, and cooling.

[0005] The main purpose of the method for manufacturing the ultra-thin coated yarn and its structure of the present invention is that a coating is precisely coated on the outer surface of the twisted plied yarn with a negative pressure spray vacuum process for the ultra-thin coated yarn, so that the ultra-thin coated yarn has better lightness, breathability, comfort, flexibility, plasticity, and hydrophobicity, and can be dyed and phenolated. After the ultra-thin coated yarn is woven into a fabric, the strength is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a block diagram of the method for manufacturing the ultra-thin coated yarn of the present invention.

[0007] Figure 2 It is a schematic diagram of the operation of the yarn twisting step of the present invention.

[0008] Figure 3 It is a schematic diagram of the operation of the negative pressure spray step of the present invention.

[0009] Figure 4 It is a schematic diagram of the operation of the heating step of the present invention.

[0010] Figure 5 It is a schematic diagram of the operation of the cooling step of the present invention.

[0011] Figure 6 It is a schematic diagram of the operation of the winding step of the present invention.

[0012] Figure 7 It is a three-dimensional view of the ultra-thin coated yarn of the present invention.

[0013] Figure 8 It is a cross-sectional view of the ultra-thin coated yarn of the present invention.

[0014] Figure 9 It is a schematic diagram of the recovery of the ultra-thin coated yarn of the present invention Figure 1 。

[0015] Figure 10 It is a schematic diagram of the recovery of the ultra-thin coated yarn of the present invention Figure 2 。

[0016] Figure 11 It is a schematic diagram of the recovery of the ultra-thin coated yarn of the present invention Figure 3 。

[0017] REFERENCE NUMERALS

[0018] S01 Yarn Twisting Step

[0019] S02 Negative Pressure Spray Step

[0020] S03 Heating Step

[0021] S04 Cooling Step

[0022] S05 Winding Step

[0023] 1 Ultra-thin Coated Yarn

[0024] 10 Twisted Ply Yarn

[0025] 11 Single Yarn

[0026] 20 Coating

[0027] 30 Small Piece of Cloth

[0028] 40 Chemical Fiber Yarn

[0029] A1 Twisting Device

[0030] A2 Precision Coating Equipment

[0031] A21 Roller

[0032] A22 Negative Pressure Spray Device

[0033] A3 Heating Device

[0034] A4 Cooling Device Detailed Implementation Manner

[0035] The following is further described in conjunction with the drawings of the preferred embodiments of the present invention, in order to enable those skilled in the art to implement it based on the statements in this specification.

[0036] First, as Figures 1 to 6 shown, the method and structure of the ultra-thin coated yarn of the present invention, the method for making the ultra-thin coated yarn includes the following steps:

[0037] (a) Yarn Twisting Step S01, twisting multiple single yarns 11 through a twisting device A1 to twist the multiple single yarns 11 into a twisted ply yarn 10 with twist (as Figure 2 or Figure 3 shown). After twisting, the outer fibers are in an oblique spiral and twist backward, the fibers are distorted and deformed, and the yarns are fixed together, changing the collective structural form and mechanical and physical properties of the fibers.

[0038] In this embodiment, the single yarn 11 is formed by twisting three yarns together or directly twisting multiple yarns. (b) Negative pressure spraying step S02: The twisted and plied yarn 10 with twist is conveyed to a precision coating device A2, rolled by a roller A21 provided in the precision coating device A2, and subjected to precision coating by a negative pressure spraying device A22 provided in the precision coating device A2 using a negative pressure spraying vacuum process. A coating 20 is applied to the outer surface of the twisted and plied yarn 10 to complete the precision coating. In this embodiment, the negative pressure spraying vacuum process uses the negative pressure principle to spray the TPU (polyurethane) liquid resin into fine particles and uniformly adhere them to the outer surface of the twisted and plied yarn 10 to form the coating 20. The principle is that a high-speed rotating centrifugal fan generates a strong negative pressure, causing the TPU liquid resin to be sucked from the container and form fine particulate matter under high-speed rotation, achieving delicate and ultra-thin coating. The coating 20 is a TPU liquid resin film, but is not limited thereto, and may also be silicone or an atomizable liquid solution, etc.

[0039] (c) Heating step S03: The twisted and plied yarn 10 with the coating 20 on its outer surface is conveyed to a heating device A3 and heated and cured at 25 to 140 °C.

[0040] (d) Cooling step S04: The cured twisted and plied yarn 10 is conveyed to a cooling device A4 for cooling to produce the ultra-thin coated yarn 1.

[0041] (e) Rewinding step S05: The produced ultra-thin coated yarn 1 is wound into a roll.

[0042] As Figure 7 and Figure 8 shown, the structure of the ultra-thin coated yarn 1 includes: a twisted and plied yarn 10 and a coating 20.

[0043] The twisted and plied yarn 10 includes multiple single yarns 11 twisted together, and the multiple single yarns 11 are intertwined with each other. In this embodiment, the single yarn 11 is formed by twisting three yarns together or directly twisting multiple yarns.

[0044] The coating 20 is precisely coated on the outer surface of the twisted and plied yarn 10 by a negative pressure spraying vacuum process to achieve delicate and ultra-thin coating, and is then made through heating and curing and cooling. The coating 20 is a TPU liquid resin film, but is not limited thereto, and may also be silicone or an atomizable liquid solution, etc. The minimum thickness of the coating 20 can be controlled at 20 deniers.

[0045] Therefore, the ultra-thin coated yarn 1 can be used in combination with weaving technology for upper fabrics, making the upper stronger and more resilient. While meeting the requirements of being ultra-light and ultra-thin, the upper remains stiff, not prone to deformation, and durable. It also has better hydrophobicity and is easy to remove dirt, making it convenient to clean the upper and extending the service life of the upper.

[0046] In addition, if Figures 9 to 11 As shown, when the upper fabric (or other fabric) woven with the ultra-thin coated yarn 1 of the present invention is obsolete, the coating 20 can be removed by washing and recycled, and the upper fabric can be crushed into irregular small pieces of cloth 30, and then the small pieces of cloth 30 are sliced and melted to generate chemical fiber filaments 40, and then the chemical fiber filaments 40 are woven on a loom to form cloth.

[0047] The structure of the above specific embodiment can achieve the following beneficial effects:

[0048] The ultra-thin coated yarn manufacturing method and structure of the present invention, wherein the ultra-thin coated yarn 1 is precisely coated with a coating 20 on the outer surface of the twisted plied yarn 10 by a negative pressure spray vacuum process, so that the ultra-thin coated yarn 1 has better lightness, breathability, comfort, flexibility, plasticity, hydrophobicity, and can be dyed and sublimation transfer printing and dyeing. The ultra-thin coated yarn 1 is woven into a fabric and its strength is greatly improved. When the ultra-thin coated yarn 1 is woven into a fabric and eliminated, the proportion of foreign materials is low, and the weight ratio is less than 10%. After being crushed, it can be processed by heat to make plastic pellets and slices, which can be made into textiles through spinning. It can be recycled and reused, and can effectively meet the industrial needs of the industry.

Claims

1. A method for manufacturing an ultra-thin coated yarn, comprising the following steps: (a) Yarn twisting step: twisting multiple single yarns through a twisting device to form a ply yarn with twist; (b) Negative pressure spraying step: conveying the twisted ply yarn with twist to a precision coating equipment, rolling it through rollers provided in the precision coating equipment, and performing precision coating and painting on the outer surface of the twisted ply yarn with twist through a negative pressure spraying device in the precision coating equipment by means of a negative pressure spraying vacuum process to complete the precision coating and painting; (c) Heating step: conveying the ply yarn with twist having a coating on its outer surface to a heating device for heating and curing; (d) Cooling step: conveying the cured ply yarn with twist to a cooling device for cooling to produce an ultra-thin coated yarn; (e) Winding step: winding the produced ultra-thin coated yarn into a roll.

2. The method for manufacturing an ultra-thin coated yarn according to claim 1, wherein the single yarn is formed by twisting three yarns together or directly twisting multiple yarns.

3. The method for manufacturing an ultra-thin coated yarn according to claim 1, wherein the negative pressure spraying vacuum process uses the negative pressure principle to spray the TPU (thermoplastic polyurethane) liquid resin into fine particles and uniformly attach them to the outer surface of the ply yarn with twist to form a coating.

4. The method for manufacturing an ultra-thin coated yarn according to claim 1, wherein in the (c) heating step, heating and curing are carried out at 25 to 140 °C.

5. An ultra-thin coated yarn structure, manufactured by using the method for manufacturing an ultra-thin coated yarn according to any one of claims 1 to 4, the ultra-thin coated yarn structure comprising: a ply yarn with twist, comprising multiple single yarns twisted together, the multiple single yarns being intertwined with each other; and a coating, which is precisely coated and painted on the outer surface of the ply yarn with twist through a negative pressure spraying vacuum process, and then made by heating and curing and cooling.

6. The ultra-thin coated yarn structure according to claim 1, wherein the coating is a TPU liquid resin film, silicone, or an atomizable liquid solution.

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