Method for manufacturing hybrid coated fiber and fiber thereof

Abstract

The present invention relates to a method for manufacturing fibers using a hybrid coating and fibers using the same. More specifically, a primary coating layer (100) formed of a polymer resin and a secondary coating layer (200) surrounding it are formed on a substrate formed of fibers, wherein the secondary coating layer (200) is directly adhered to the fibers so that effective adhesion can be formed so that the coating layer series does not easily separate.

Description

Technology Field

[0001] The present invention relates to a method for manufacturing fibers using a hybrid coating and fibers using the same. More specifically, a primary coating layer formed of a polymer resin and a secondary coating layer surrounding it are formed on a substrate formed of fibers, wherein the secondary coating layer is directly adhered to the fibers so that effective adhesion can be formed so that the coating layer series does not easily separate. Background Technology

[0003] Generally, for materials such as textiles, films, and leather, surface treatment agents are used to ensure durability. In addition to primers applied to the fabric surface, resins are coated according to function and purpose, with water-based polyurethane resin primarily used for the outermost layer. Furthermore, to enhance tactile sensation and texture, the polyurethane components must possess excellent elasticity and mechanical properties; conversely, to impart a luxurious aesthetic, the material is manufactured to reduce gloss while increasing the degree of opacity.

[0004] As a related prior art, Patent Document 1 proposes a technique of adding silica or wax as a matting agent to reduce the gloss of water-based polyurethane resins; however, when used in small amounts, there is no gloss-reducing effect, and when used in excessive amounts, there are problems such as migration to the surface or reduced adhesion to substrates such as textile fabrics, leather fabrics, and films. In addition, an additional process for dispersion is required, and storage stability is poor due to limitations in dispersion stability.

[0005] To address this, methods have recently been proposed to improve dispersion stability and increase adhesion to the fabric by modifying the silica surface or using modified silica; however, while dispersion stability increases somewhat, it does not have a significant effect on improving physical properties, and additional additives are required to enhance dispersion power.

[0006] In other words, when using additives with a matting function such as silica, there is an effect of providing a luxurious look by reducing gloss and increasing cloudiness, but physical properties such as wear resistance are reduced, and the amount that can be used is limited due to dispersion and storage stability issues, and there is a problem that it is difficult to use in excessive amounts. Prior art literature

[0008] Patent Document 1: Korean Registered Patent Publication No. 10-2099049 "Method for Light-Shading Coating of Outdoor Fabrics" The problem to be solved

[0009] The present invention has been devised to solve the above-mentioned problems, and the objective of the present invention is to provide a hybrid coating method capable of increasing wear resistance and grip when manufacturing textiles including arm warmers, gloves, clothing, pads, and sheets.

[0010] The technical problems that the invention aims to solve are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which the invention belongs from the description below. means of solving the problem

[0012] A method for manufacturing fibers using a hybrid coating according to the present invention is,

[0013] A first step of forming a primary coating layer (100) on the surface of a substrate formed of fibers;

[0014] A second step of treating a coagulant on a fiber substrate having the first coating layer (100) formed thereon;

[0015] A third step of forming a secondary coating layer (200) on the fiber substrate treated with the above coagulant;

[0016] A fourth step of partially solidifying the first coating layer (100) or the second coating layer (200);

[0017] A fifth step of forming a final coating layer (300) while removing a portion of the surface of the first coating layer (100) or the second coating layer (200);

[0018] A sixth step of drying to form a final coating layer (300); comprising,

[0019] The above primary coating layer (100) is formed by one or more methods of screen printing, transfer printing pad printing, injection, pressing, and bonding, and

[0020] The above secondary coating layer (200) is characterized by being formed by one or more methods of immersion, dripping, spraying, and printing. Effects of the invention

[0022] By means of the solution to the above problem, the present invention has the effect of easily adhering to the fiber and the coating agent without them falling off.

[0023] In addition, the present invention can increase wear resistance and grip by applying a hybrid coating method when manufacturing textiles including arm warmers, gloves, clothing, pads, and sheets. Brief explanation of the drawing

[0025] FIG. 1 is a flowchart showing the hybrid coating method of the present invention. FIG. 2 is a schematic diagram showing a method for coating a fiber prepared by Example 1 according to an embodiment of the present invention. FIG. 3 is a schematic diagram showing a method for coating a fiber prepared by Example 2 according to an embodiment of the present invention. FIG. 4 is a drawing in which the primary coating layer (100) is formed more convexly than FIG. 2 according to an embodiment of the present invention. FIG. 5 is a more detailed representation of FIG. 3 according to an embodiment of the present invention, showing a second coating layer (200) formed by making the first coating layer (100) concave on a fiber substrate (10). FIG. 6 is a diagram confirming the flexibility of Experimental Example 1 according to an embodiment of the present invention. Figure 7 is a glove with a coating method generally formed on a fiber, and is a photograph showing the problem of the coating agent peeling off from the fiber as indicated by the black dotted line (circle). FIG. 8 is a photograph showing a glove using a hybrid coating according to an embodiment of the present invention, in which a dot-shaped coating agent can be seen not falling off the glove. Specific details for implementing the invention

[0026] The terms used in this specification will be briefly explained, and the invention will be described in detail.

[0027] The terms used in this invention have been selected based on currently widely used general terms while considering their functions within the invention; however, these terms may vary depending on the intent of those skilled in the art, case law, the emergence of new technologies, etc. Therefore, the terms used in this invention should be defined not merely by their names, but based on their meanings and the overall context of the invention.

[0028] When a part of a specification is described as “comprising” a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0029] Embodiments of the present invention are described below with reference to the attached drawings so that those skilled in the art can easily implement them. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0030] Specific details regarding the problem to be solved by the present invention, the means for solving the problem, and the effects of the invention are included in the embodiments and drawings described below. The advantages and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the accompanying drawings.

[0031] Hereinafter, the present invention will be described in more detail with reference to the attached drawings.

[0033] As shown in FIG. 1, the method for manufacturing fibers using the hybrid coating of the present invention is carried out more specifically by the following steps.

[0034] First, the first step (S10) forms a primary coating layer (100) on the surface of a substrate formed of fibers.

[0035] The above primary coating layer (100) is preferably formed by one or more methods of screen printing, transfer printing, pad printing, injection, dipping, spraying, pressing, and bonding.

[0036] The above primary coating layer (100) is a polymer resin, and more specifically, it is formed by solidifying latex and is preferably formed transparently.

[0037] It is preferable that the diameter or side length of the above primary coating layer (100) be 0.01 to 50 mm.

[0038] Here, the fibers refer to gloves, arm warmers, fabrics, clothing, non-woven fabrics, natural leather, and synthetic leather.

[0040] Next, the second step (S20) involves treating the fiber substrate on which the first coating layer (100) is formed with a coagulant.

[0041] The above coagulant is preferably sodium chloride, potassium chloride, calcium chloride, magnesium chloride, calcium nitrate, aluminum chloride, aluminum sulfate, magnesium sulfate, formic acid, acetic acid, hydrochloric acid, phosphoric acid, citric acid, gluconic acid, or propionic acid.

[0043] Next, the third step (S30) forms a layer of natural latex, synthetic latex alone, or a mixture as a secondary coating layer (200) on the fiber substrate treated with the coagulant. As the synthetic latex, NBR (Nitrile-Butadiene) latex, SBR (Styrene-Butadiene) latex, acrylic emulsion, CR (Chloroprene) latex, polyvinyl chloride, polyurethane, etc. may be used.

[0044] The above secondary coating layer (200) is applied to the surface of the fiber substrate treated with the above coagulant, and it is preferable that this be done by one or more of the methods of immersion, dripping, spraying, and printing.

[0045] Here, the first coating layer (100) and the second coating layer (200) are formed on the surface of the fiber substrate in a flat or irregular (dot) shape.

[0046] In addition, it is preferable that the height of the second coating layer be 0.1 to 10 mm.

[0048] Next, the fourth step (S40) partially solidifies the first coating layer (100) or the second coating layer (200).

[0049] It is preferable that the partial solidification of the first coating layer (100) or the second coating layer (200) be performed at a temperature of 5 to 80 ℃ for 1 to 60 minutes after the second coating layer (200) is formed in the third step (S30).

[0051] Next, the fifth step (S50) forms a final coating layer (300) while removing a portion of the surface of the first coating layer (100) or the second coating layer (200).

[0052] A portion of the surface of the secondary coating layer (200) formed on the upper surface of the primary coating layer (100) or directly formed on the fiber substrate can be removed by immersing it in water or by spraying water with appropriate water pressure onto the surface of the primary coating layer (100) or the secondary coating layer (200).

[0053] In the fourth step (S40), a portion of the surface of the secondary coating layer (200) is partially solidified for 1 to 80 minutes, and then a final coating layer (300), which is a liquid or gaseous fluid, is formed by naturally removing a portion of the surface of the secondary coating layer (200) through spraying, immersion, or flowing down.

[0054] Here, when a portion of the surface of the secondary coating layer (200) is removed, the primary coating layer (100) is formed higher than the secondary coating layer (200) (primary coating layer (100) is formed convexly) when the wear resistance is better, and the primary coating layer (100) is formed lower than the secondary coating layer (200) (secondary coating layer (200) is formed concavely) when the grip is better. The grip can be verified by the coefficient of friction.

[0056] Next, step 6 (S60) dries the final coating layer (300).

[0057] It is preferable to perform the above final coating layer (300) by drying at a temperature of 60 to 120 ℃ for 1 to 2 hours.

[0059] In addition, the fiber using the hybrid coating of the present invention is manufactured by the method for manufacturing a fiber using the hybrid coating described above. The fiber using the hybrid coating is as shown in FIG. 8.

[0060] In the fiber using the above hybrid coating, a primary coating layer (100) formed of a polymer resin, printing ink, and a metal thin film is directly adhered to the fiber on a substrate formed of fiber. As the metal thin film, a thin film formed of metal such as gold foil, silver foil, or copper foil can be used.

[0061] A pattern is formed on a part of the upper portion of the fiber by the above primary coating layer (100).

[0062] A second coating layer (200) is formed to surround the first coating layer (100), and the second coating layer (200) is directly adhered to the fiber.

[0063] The second coating layer (200) is provided to be open on the upper portion of the first coating layer (100). The second coating layer (200) is formed to include the upper portion of the first coating layer (100).

[0064] In addition, the second coating layer (200) and the first coating layer (100) are characterized by having different physical or chemical properties, and the final coating layer (300) is identical to the second coating layer (200). The physical properties include the hardness, foaming ratio, color, etc. of the material, and the chemical properties include the chemical composition of the material.

[0065] Here, the fibers refer to gloves, arm warmers, fabrics, clothing, non-woven fabrics, natural leather, and synthetic leather.

[0067] Hereinafter, the present invention will be explained in more detail through comparative examples and embodiments prepared by conventional methods and experimental examples. The purpose, features, and advantages of the present invention will be easily understood through the following embodiments. The present invention is not limited to the embodiments described herein and may be embodied in other forms. The embodiments introduced herein are provided to ensure that the concept of the present invention is sufficiently conveyed to those skilled in the art to which the present invention pertains. Therefore, the present invention should not be limited by the following embodiments.

[0069] Example 1: Formation of a convex shape in the primary coating layer (100)

[0070] As shown in FIG. 2, a primary coating layer (100) with a height of 0.6 and 0.3 mm was formed on the surface of a fiber-formed substrate (10) by silicone dot printing. A 10% aqueous calcium chloride solution was treated with a coagulant (20) on the fiber substrate (10) having the primary coating layer (100) formed thereon. An NBR (Nitrile-Butadiene) latex was treated on the fiber substrate (10) treated with the coagulant (20) to form a secondary coating layer (200) with a height of 0.2 mm (Fig. 2(a)). After partially solidifying the secondary coating layer (200) at a temperature of 30°C for 2 minutes, a final coating layer (300) is formed by removing a portion of the surface of the secondary coating layer (200) formed on top of the primary coating layer (100) (Fig. 2(b)), and then the final coating layer (300) is dried at a temperature of 100°C for 1 hour.

[0071] As a result, the fiber substrate (10) is separated into a portion (22) where the coagulant (20) is not diffused into the secondary coating layer (200) by the primary coating layer (100) and a portion (21) where it is diffused into the secondary coating layer (200), and it was confirmed that coagulation does not occur in the portion (22) where the coagulant (20) is not diffused, and coagulation occurs in the portion (21) where the coagulant (20) is diffused.

[0073] FIG. 4 is a drawing showing the case where only the primary coating layer (100) is formed, only the secondary coating layer (200) is formed, or the hybrid coating layer is formed in a convex shape. As shown in FIG. 4(a), when only the primary coating layer (100) is formed, the wear resistance is excellent but the grip is insufficient. As shown in FIG. 4(b), when only the secondary coating layer (200) is formed, the wear resistance is average and the grip is excellent. As shown in FIG. 4(c), when the hybrid coating of the present invention is applied, it was confirmed that the fiber coating method has excellent wear resistance and grip.

[0074] Therefore, when the first coating layer (100) is formed in a convex shape, the first coating layer (100) is supported by the second coating layer (200), and the coagulant is effectively distributed, allowing for easy adhesion without detaching from the fiber substrate (10).

[0076] Example 2: Formation of a concave shape in the primary coating layer (100)

[0077] As shown in FIG. 3, a primary coating layer (100) with a height of 0.3 mm was formed by treating the surface of a fiber-formed substrate (10) with latex. A 10% aqueous calcium chloride solution was treated as a coagulant (20) on the fiber substrate (10) with the primary coating layer (100). A secondary coating layer (200) with a height of 0.8 mm was formed by treating the fiber substrate (10) treated with the coagulant (20) with NBR (Nitrile-Butadiene) latex (Fig. 3(a)). After partially solidifying the secondary coating layer (200) at a temperature of 30°C for 2 minutes, the secondary coating layer (200) applied to the upper surface was removed (Fig. 3(b)) to form the final coating layer (300). Subsequently, the primary coating layer (100) was dried at a temperature of 100°C for 1 hour (Fig. 3(b)).

[0078] In addition, a 10% aqueous calcium chloride solution was treated as a coagulant (20) on the fiber substrate (10) on which the first coating layer (100) was formed to a height of 0.3 mm. NBR (Nitrile-Butadiene) latex was applied to the fiber substrate (10) treated with the coagulant (20) to form a second coating layer (200) with a height of 1.0 mm. After partially solidifying the second coating layer (200) at a temperature of 30 ℃ for 2 minutes, a final coating layer (300) was formed by removing a portion of the surface of the second coating layer (200) (Fig. 3(d)), wherein a portion of the surface was removed so that the second coating layer (200) was formed to a height of 0.6 mm. Subsequently, the coating layer (100) was dried at a temperature of 100 ℃ for 1 hour (Fig. 3(b)).

[0080] As a result, as shown in FIG. 3(d), the coagulant (20) is separated into a portion (22) where the coagulant (20) is not diffused into the secondary coating layer (200) and a portion (21) where the coagulant (20) is diffused into the secondary coating layer (200) by the primary coating layer (100) on the fiber substrate (10), and it was confirmed that coagulation does not occur in the portion (22) where the coagulant (20) is not diffused, and coagulation occurs in the portion (21) where the coagulant (20) is diffused. Therefore, even when the primary coating layer (100) is formed in a concave shape, the coagulant is effectively distributed into the secondary coating layer (200), and the effect of easily adhering to the fiber substrate (10) without detaching can be confirmed.

[0081] FIG. 5 shows a case where a primary coating layer (100) is formed in a concave shape and a secondary coating layer (200) is formed on a fiber substrate (10). It was confirmed that wet grip is low when only the primary coating layer (100) is formed and when only the secondary coating layer (200) is formed, respectively. As shown in FIG. 5(b), the primary coating layer (100) is lower than the secondary coating layer (200), so the primary coating layer (100) becomes a groove and acts as a drainage, allowing the coagulant (20) to easily move to the top of the primary coating layer (100). It was confirmed that when a hybrid coating is applied as in the present invention, the fiber coating method has excellent wear resistance and grip.

[0083] Experimental Example 1: Verification of Flexibility

[0084] As shown in Fig. 6(a), when the secondary coating layer (2 million) was formed, there was a problem of uncomfortable wear and lack of flexibility. e in Fig. 6(b) is a part that needs to stretch when bent. As shown in Fig. 6(c), when the secondary coating layer (2 million) was formed, there was a problem of high tensile strength and low flexibility due to the large stretched part. However, as shown in Fig. 6(d), it was confirmed that the hybrid coating of the present invention has excellent flexibility as there is no resistance to stretching when bent.

[0086] Experimental Example 2: Friction coefficient and wear resistance according to silicone type, dot condition, and hybrid coating method

[0087] Experimental Example 2 verified the coefficient of friction and wear resistance results when tested with silicone types, dot conditions, hybrid conditions, and polyurethane (PUD) alone. (6 / 30-7 / 5 (Shinbalyeon) T-23-1241

[0089] Condition (coating height) coefficient of friction Wear resistance note silicone dots ④ 0.6T 0.88 Surface peeling ⑤ 0.3T 1.06 Surface peeling Hybrid ⑥ 0.6T 1.82 No peeling hybrid coating ⑦ 0.3T 2.07 No peeling hybrid coating Water-dispersible polyurethane (PUD) alone 2.83 No peeling PUD exclusive

[0090] - Wear resistance: 5,000 cycles (12kPa) T-23-1241-1

[0091] - Silicone dot print height for numbers 4 and 6: 0.6 mm

[0092] - Nos. 5, 7: 0.3 mm

[0093] - 3rd coating height: 0.2 mm

[0095] It can be confirmed that the coefficient of friction increases when hybrid coated compared to silicon dots alone. The coefficient of friction can be used to predict grip, which is the force applied when gripping an object.

[0096] In addition, it can be confirmed that wear resistance is higher when hybrid coated compared to silicon dots alone.

[0098] Experimental Example 3: Friction coefficient and wear resistance according to coating and surface treatment (sugar) conditions

[0099] Experimental Example 3 verified the results of the coefficient of friction and wear resistance according to coating and surface treatment (sugar) conditions. (6 / 20-6 / 21(Shinbalyeon) T-23-1139

[0101] condition Coefficient of friction (dry) Wear resistance note Hybrid coating ⑥ 0.6T 1.82 No peeling Surface untreated ⑦ 0.3T 2.07 No peeling Surface untreated Hybrid coating surface treatment 0.6T 2.43 No peeling Surface treatment 0.3T 2.29 No peeling Surface treatment silicone dots 1.8 exfoliation

[0102] - Wear resistance: 5,000 cycles (12kPa)

[0103] - Hybrid coating surface treatment: Cases where the coated surface is treated with sugar after coating.

[0105] It can be confirmed that the coefficient of friction is superior when surface treatment is performed after hybrid coating compared to the hybrid coating.

[0107] Experimental Example 4: Friction coefficient and wear resistance according to coating and surface treatment (sugar) conditions

[0108] Experimental Example 4 verified the coefficient of friction and wear resistance results according to coating and surface treatment (sugar) conditions. (6 / 20-6 / 21(Shinbalyeon) T-23-1324

[0110] condition Coefficient of friction (dry) Wet General polyurethane (PU) 2.52 0.27 PU surface treatment 2.93 0.25

[0112] It was confirmed that compared to general PU coating, the coefficient of friction in the dry state is significantly higher when the surface (sugar) is treated, but the coefficient of friction in the wet state is similar.

[0114] Experimental Example 5: Friction coefficient and wear resistance of hybrid coating according to concave and convex conditions

[0115] Experimental Example 5 confirmed the results of the coefficient of friction and wear resistance according to the concave and convex conditions of the hybrid coating. (6 / 20-6 / 21(Shinbalyeon) T-23-1480

[0117] condition Coefficient of friction (dry) Wet Hybrid Coated Concave 0.81 0.3 Hybrid Coated Convex 1.59 0.68

[0119] It can be confirmed that among hybrid coatings, the dry and wet friction coefficients are about twice as good as those of the PU base coating when the dots are higher convex than when they are lower concave.

[0121] By means of the solution to the above problem, the present invention has the effect of easily adhering to the fiber and the coating agent without them falling off.

[0122] In addition, the present invention can increase wear resistance and grip by applying a hybrid coating method when manufacturing textiles including arm warmers, gloves, clothing, pads, and sheets.

[0124] As such, those skilled in the art to which the present invention pertains will understand that the technical configuration of the present invention described above can be implemented in other specific forms without altering the technical concept or essential features of the present invention.

[0125] Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting, and the scope of the invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as being included within the scope of the invention. Explanation of the symbols

[0127] S10. A first step of forming a primary coating layer (100) on the surface of a substrate formed of fibers; S20. A second step of treating a coagulant on a fiber substrate having the first coating layer (100) formed thereon; S30. A third step of forming a secondary coating layer (200) on the fiber substrate treated with the above coagulant; S40. A fourth step of partially solidifying the first coating layer (100) or the second coating layer (200); S50. A fifth step of forming a final coating layer (300) while removing a portion of the surface of the first coating layer (100) or the second coating layer (200); S60. 6th step of drying the final coating layer (300) above 10. Fiber substrate 20. Coagulant 21. Coagulant Diffusion Section 22. Areas where the coagulant did not diffuse 100. Primary coating layer 200. Secondary coating layer 300. Final coating layer

Claims

Claim 1 A first step of forming a primary coating layer (100) on the surface of a substrate formed of fibers; a second step of treating a coagulant on the fiber substrate having the primary coating layer (100) formed thereon; a third step of forming a secondary coating layer (200) on the fiber substrate treated with the coagulant; a fourth step of partially solidifying the secondary coating layer (200) so that coagulation occurs in the portion where the coagulant has diffused into the secondary coating layer (200); a fifth step of forming a final coating layer (300) while removing a portion of the surface of the primary coating layer (100) or the secondary coating layer (200); and a sixth step of drying to form the final coating layer (300); wherein the primary coating layer (100) is formed by one or more methods among screen printing, transfer printing, pad printing, injection, dipping, spraying, pressing, and bonding, and the secondary coating layer (200) is formed by one or more methods among immersion, dripping, spraying, and printing. A method for manufacturing fibers using a hybrid coating, characterized in that, in the third step, the secondary coating layer (200) is formed by being directly adhered to the fiber substrate to surround the primary coating layer (100). Claim 2 delete Claim 3 A method for manufacturing fibers using a hybrid coating, characterized in that, in claim 1, the height of the first coating layer (100) or the second coating layer (200) is 0.01 to 10 mm. Claim 4 A method for manufacturing a fiber using a hybrid coating according to claim 1, characterized in that when a portion of the surface of the secondary coating layer (200) is removed in the fifth step, the primary coating layer (100) is formed higher than the secondary coating layer (200) or the primary coating layer (100) is formed lower than the secondary coating layer (200). Claim 5 A method for manufacturing fibers using a hybrid coating according to claim 1, wherein the partial solidification of the secondary coating layer (200) in the fourth step is performed at a temperature of 5 to 80°C for 1 to 60 minutes after forming the secondary coating layer (200) in the third step.

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