Magnet fixed fiber product manufacturing method

Abstract

To provide a method to efficiently manufacture a fiber product on which magnets are fixed so as to have good appearance by using printing technique, and also to provide a magnet fixed fiber product having the same structure as the fiber product obtained using the manufacturing method.SOLUTION: A manufacturing method of a magnet fixed fiber product 1 comprises: a step to form a concave part 13, in which a solid magnetic material 2 is disposed, on a surface of a fabric 12; a step to apply ink 3 so as to cover the concave part 13 and the solid magnetic material 2; and a step to cure the ink 3 to form a cured material 31 bonded to the concave part 13, and fix the solid magnetic material 2 to the concave part 13 by the cured material. Preferably, the ink 3 is silicone ink. A part 13a to become the concave part 13 is formed by placing the fabric 12 on a table 4 on which a concave tray part 41 is provided. Magnetic means 42 is disposed directly below the concave tray part 41. The solid magnetic material 2 is moved to the part 13a to become the concave part 13 by magnetic force applied by the magnetic means 42 to the solid magnetic material 2.SELECTED DRAWING: Figure 3-1

Description

[Technical Field]

[0001] The present invention relates to a textile product having a magnet fixed thereto and a method for manufacturing the same. [Background technology]

[0002] When a textile product with a magnet attached is worn on the human body, the magnetic field dilates blood vessels and promotes blood circulation, which is expected to be effective in treating neuralgia and muscle pain, such as lower back pain and stiff shoulders.

[0003] Conventionally, methods for attaching magnets to clothing such as shirts, socks, and supporters, or to textile products such as fabrics used as raw materials for clothing and pillowcases have been sewn using a patch or fused with hot melt adhesive. The method of sewing using a patch cloth has low production efficiency and is not suitable for mass production. Hot melt fusion is currently the most widely used method. "Hot melt" refers to a material in which a thermal adhesive is laminated to a patch of fabric. In this method, a magnet is temporarily attached to the surface of the hot melt on the side of the thermal adhesive. The hot melt with the magnet temporarily attached is then pressed against the fabric (textile product) and heated. As shown in Figure 5, this method thermally fuses the patch 106a, magnet 102, and fabric 112, securing the magnet to the fabric. While this method offers higher production efficiency than sewing with a patch, it has several drawbacks: it is time-consuming because the hot melt must be cut into a circle or other shape before the magnet is temporarily attached; the hot melt after thermal fusion is hard and inflexible, resulting in an unpleasant feel; and, as shown in Figures 4 and 5, the magnet 102 pushes the fabric 112 outward from the back side during thermal fusion, creating wart-like protrusions 114 on the front (outside) side of the fabric, resulting in a poor appearance.

[0004] Patent Document 1 describes a method for fixing permanent magnets to futon fabric using hot melt. In this method, a pressure plate with holes is used to heat and melt the hot melt, thereby fixing the permanent magnet to the futon fabric. Because a pressure plate with holes larger in diameter than the magnet is used, the force with which the magnet pushes the futon fabric outward during thermal fusion is weak, and any protrusions, such as warts, that appear on the surface of the futon fabric are inconspicuous. However, this method requires time-consuming alignment of the pressure plate with holes and the magnet, and also requires cutting the hot melt into shapes such as circles in advance, making it unsuitable for mass production.

[0005] Patent Document 2 describes an invention of a method for imparting magnetic material to a textile product, in which magnetic powder is uniformly dispersed in a binder and printed in dots on the textile product, and then the product is subjected to a magnetic field orientation treatment, heat treatment, and magnetization treatment, thereby achieving both the comfort of the textile product and the effect of magnetic force. However, with this method, the magnetic force obtained by the magnetization treatment of the printed magnetic powder is weak, and the health benefits of the magnetic force cannot be expected to be significant.

[0006] Patent Document 3 describes a technology for adding additional functionality to silicone molded articles with anti-slip properties. Conventionally, these have a three-layer structure consisting of a silicone layer with a functional material such as a magnet embedded in the top, a fiber layer in the middle, and a thermal adhesive layer in the bottom. However, this technology eliminates the need for the fiber layer, and instead integrates the silicone layer directly with a thermoplastic resin attached to the thermal adhesive layer. This results in a silicone molded article that can be attached to clothing and is resistant to peeling after use. However, producing magnet-fixed textile products by fixing this silicone molded article to clothing using a hot press is less efficient than fixing magnets using methods such as printing, as described below, and is not suitable for producing a wide variety of magnet-fixed textile products with excellent design. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 63-315069 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-129470 [Patent Document 3] Japanese Patent Application Laid-Open No. 2012-214001 Summary of the Invention [Problem to be solved by the invention]

[0008] The object of the present invention is, first, to provide a method for efficiently manufacturing textile products with fixed magnets using printing technology with good appearance, and second, to provide a textile product with fixed magnets that has the same structure as the textile product obtained using this manufacturing method. [Means for solving the problem]

[0009] The present invention has been made to solve the above problems, A first form of the present invention is a method for manufacturing a magnet-fixed textile product, comprising the steps of forming a recess on the surface of a cloth in which a solid magnetic body is arranged, applying ink so as to cover the recess and the solid magnetic body, curing the ink to form a hardened product that bonds with the recess, and fixing the solid magnetic body to the recess by the hardened product.

[0010] A second form of the present invention is a method for manufacturing a magnet-fixed textile product, comprising the steps of: placing a solid magnetic body on the surface of a cloth; applying ink so as to cover at least a portion of the surface and the solid magnetic body; curing the ink to form a cured product that bonds with the surface; and fixing the solid magnetic body to the surface with the cured product.

[0011] A third aspect of the present invention is a method for manufacturing a magnet-fixed fiber product according to the first aspect, wherein the cloth is placed on a table provided with a recessed basin, thereby bending the cloth to form a portion that will become the recess, and the recessed basin is constituted by a magnetic means, or a magnetic means is arranged directly below the recessed basin, and the magnetic force exerted by the magnetic means on the solid magnetic body moves the solid magnetic body to the portion that will become the recess, thereby forming the recess in which the solid magnetic body is arranged on the surface of the cloth.

[0012] A fourth aspect of the present invention is a method for manufacturing a magnet-fixed textile product according to the third aspect, wherein a plurality of recesses in which solid magnetic bodies are arranged are present on the surface of the fabric, and the ink is simultaneously applied by printing to one recess in which the solid magnetic body is arranged and another recess in which the solid magnetic body is arranged.

[0013] The fifth form of the present invention is a method for producing a magnet-fixed fiber product according to the fourth form, wherein the cured product covers the recesses and the solid magnetic material, and the upper surface of the cured product has a height of 0.1 mm or more and 3 mm or less from the level of the surface of the fabric other than the recesses.

[0014] A sixth aspect of the present invention is the fifth aspect, wherein the height H of the solid magnetic body and the depth D of the recessed portion are expressed by the inequality -3mm ≦ HD ≦ 1mm This is a method for manufacturing a magnet-fixed fiber product that satisfies the above requirements.

[0015] A seventh form of the present invention is the method for producing a fiber product with a fixed magnet in the sixth form, wherein the ink is a silicone ink.

[0016] The eighth form of the present invention is a textile product comprising a fabric having a recessed portion on the surface of which a solid magnetic body is fixed, wherein the solid magnetic body and the recessed portion are covered with a cured product of the ink, and the solid magnetic body is fixed to the recessed portion by the cured product of the ink that is bonded to the recessed portion. It is a textile product. [Effects of the Invention]

[0017] According to one aspect of the present invention, a method for efficiently manufacturing a textile product with a fixed magnet using printing technology with good appearance can be provided. According to another aspect of the present invention, a textile product with a fixed magnet having the same structure as the textile product obtained using the manufacturing method can be provided. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is an explanatory diagram of a T-shirt to which a solid magnetic material such as a magnet is fixed according to the present invention. [Figure 2] FIG. 2 is an enlarged cross-sectional view of a portion in FIG. 1 where a solid magnetic body is fixed. [Figure 3-1] FIG. 3-1 is a cross-sectional view illustrating each step of the manufacturing method according to the present invention. [Figure 3-2] Figure 3-2 is a continuation of Figure 3-1. [Figure 4] FIG. 4 is an explanatory diagram of a T-shirt with a magnet fixed thereto according to the prior art. [Figure 5] FIG. 5 is an enlarged cross-sectional view of the portion of FIG. 4 where the magnet is fixed. DETAILED DESCRIPTION OF THE INVENTION

[0019] Next, the embodiments of the present invention will be described in detail. It should be understood that the present invention is not limited to the embodiments and examples described below, but also includes various modifications and variations that are implemented within the scope of the technical concept of the present invention.

[0020] <First form> According to a first aspect of the present invention, a method for manufacturing a magnet-fixed textile product can be provided, comprising the steps of: forming a recess on the surface of a cloth in which a solid magnetic body is arranged; applying ink so as to cover the recess and the solid magnetic body; curing the ink to form a hardened product that bonds with the recess; and fixing the solid magnetic body to the recess by the hardened product.

[0021] (Fabric and textile products) In this specification, "fabric" and "cloth" are synonymous with "textile product." In this specification, "textile products" refers to clothing such as shirts, socks, supporters, pants, innerwear, gloves, hats, scarves, and neck warmers; cold weather gear and waterproof clothing such as jackets, trousers, coats, windbreakers, and raincoats; leg-covering clothing such as shoes, boots, sandals, arm warmers, leg warmers, tights, and stockings; and supportive wearable items such as wristbands, headbands, neckbands, belts, waist supporters, knee supporters, and ankle supporters. In addition, it also refers to bedding such as pillowcases, futon covers, bed sheets, towel blankets, blankets, cushion covers, mattress pads, and huggable pillow covers; household textile products such as tablecloths, curtains, blinds, rugs, and mats; textile products for vehicles such as chair covers, sofa covers, car seat covers, car interior fabrics, and carpets; everyday items such as towels, bath towels, face towels, hand towels, handkerchiefs, aprons, mittens, kitchen cloths, and eco-bags; and outdoor products such as tent sheets, hammocks, sleeping bags, and picnic sheets. Additionally, "textile products" includes fabrics and cloths that are used as raw materials for the above products and articles.

[0022] (fiber) In the present invention, the fibers constituting the textile product are not particularly limited. Natural fibers such as cotton, hemp, bamboo fiber, wool, and silk, and chemical fibers such as rayon, Tencel, polyester, nylon, acrylic, and polyurethane can be used arbitrarily. These fibers may be used alone or in combination by blending to improve specific performance or pursue comfort.

[0023] (Method of constructing textile products from fibers) In the present invention, the method for constructing a textile product from fibers is not particularly limited. Fibers can be processed using conventionally known techniques, such as woven fabrics, knitted fabrics, and felted fabrics. For example, in the case of woven fabrics, products that combine strength and flexibility can be obtained by weaving warp and weft yarns alternately. In knitted fabrics, a loop knitting method is used to increase stretchability and flexibility. Furthermore, in the case of nonwoven fabrics such as felt, fibers can be mechanically, thermally, or chemically bonded to produce products with properties tailored to the intended use. Furthermore, specific functions, such as durability, waterproofness, or fire resistance, can be imparted by blending multiple fibers or applying special coatings.

[0024] (Recessed portion where solid magnetic material is placed) The "recess" in the "recess in which a solid magnetic body is placed" may be formed on the surface of the cloth so as to reduce the thickness of the cloth, or may be formed on the surface of the cloth by bending the cloth while keeping the thickness of the cloth almost the same. When a solid magnetic body that is taller than the thickness of thin cloth is placed on the thin cloth, as in the latter case, the "recess" is formed by bending the cloth.

[0025] (Solid magnetic material) In this specification, the term "solid magnetic material" refers to a massive magnetic material having a maximum outer diameter of 1 mm or more and a ratio d2 / d1 of the maximum outer diameter d1 to the minimum outer diameter d2 of 0.01 or more. The solid magnetic material used in the present invention is not limited to, but is preferably, for example, a massive ferromagnetic material made of neodymium, samarium-cobalt, ferrite, or the like, having a maximum outer diameter of 1 mm or more and 10 mm or less. Ferromagnetic powder itself is not considered a "solid magnetic material" if, for example, the maximum outer diameter of the powder is less than 1 mm. However, a bonded aggregate of ferromagnetic powder, such as a cured liquid composition containing the powder or a sintered body formed from the powder, is considered a "solid magnetic material" if the maximum outer diameter of the bonded aggregate satisfies the above conditions. The "maximum outer diameter" of an object is the maximum value of the "outer diameter in a specific direction" of the object when the direction is changed in various ways. The "minimum outer diameter" of an object is the smallest value of the "outer diameter in a specific direction" of the object when the direction is changed in various ways. Here, the "outer diameter in a specific direction" of an object is the maximum distance between any two points on the shared area (there may be multiple shared areas) between a line in that direction and the object when the line in that direction is translated in various ways.

[0026] (Timing of magnetization) The solid magnetic material used in the present invention may be magnetized or non-magnetized. A magnetized solid magnetic material is called a "magnet." When a non-magnetized solid magnetic material is used to produce a magnet-fixed textile product by the manufacturing method of the present invention, the solid magnetic material can be magnetized immediately before, during, or immediately after any appropriate step included in the manufacturing method of the present invention. The timing of the magnetization treatment is arbitrary; for example, the magnetization treatment may be performed after the textile product in which the non-magnetized solid magnetic material is fixed to the cloth is completed. "Magnetization" refers to the process of giving a solid magnetic material or a part of it a magnetic moment, or of increasing the magnitude of that magnetic moment. Here, the magnetic moment of a solid magnetic material or a part of it refers to the magnetic moment of a magnetic dipole, the magnetic field formed around the solid magnetic material or part of it asymptotically approaching the magnetic field formed by a magnetic dipole at a distance.

[0027] (Magnetic processing process) In the magnetization process, for example, a strong magnetic field is applied from the outside to a solid magnetic material made of a ferromagnetic material such as neodymium after or before it is fixed to the fabric, to give it a magnetic moment, and it functions as a magnet. However, there are methods such as pulse magnetization and DC magnetization. Pulse magnetization is a method of magnetization using a pulsed magnetic field, in which a strong magnetic field is applied instantaneously in a short period of time, and is suitable for high-coercivity materials. A solid magnetic material or a cloth to which it is fixed is placed in a magnetic field generator, and a pulsed magnetic field is applied to magnetize the solid magnetic material. DC magnetization is a method of magnetization using a DC (direct current) magnetic field, in which a constant magnetic field is applied for a long period of time, and is suitable for low-coercivity materials. Magnetization is performed using a device such as an electromagnetic coil.

[0028] (magnet) In this specification, a "magnet" refers to an object that generates a magnetic field around itself and attracts other magnetic bodies. The object is naturally or artificially magnetized, has a maximum outer diameter of 1 mm or more, and a ratio of the maximum outer diameter to the minimum outer diameter of 0.01 or more. From the viewpoint of ease of handling, the "magnet" is preferably not an electromagnet, and is preferably a solid permanent magnet. Furthermore, from the viewpoint of obtaining health benefits by forming a strong magnetic field around itself, the "magnet" is preferably not a magnetized cured product of ink containing magnetic powder. Suitable magnets for use in the present invention include, for example, neodymium magnets, samarium-cobalt magnets, and ferrite magnets with a maximum outer diameter of 1 mm or more and 10 mm or less.

[0029] (ink) As used herein, "ink" refers to a liquid that can be printed on fabric, hardens, and adheres to it. Examples include silicone ink, plastisol ink, water-based ink, UV-curable ink, epoxy ink, and polyurethane ink. Silicone ink is highly flexible and can be used on stretchy fabrics. Plastisol ink is based on PVC (polyvinyl chloride) and is durable, allowing for vivid printing, especially on dark-colored fabrics. Water-based ink is environmentally friendly and penetrates the fabric, preserving its natural texture and resulting in a soft finish. UV-curable ink dries quickly under ultraviolet light, is water-resistant, and light-resistant, making it suitable for delicate designs. Epoxy ink has very strong adhesion after curing and excellent chemical resistance. Polyurethane ink is flexible and abrasion-resistant, making it particularly suitable for stretchy sportswear. These inks are selected appropriately depending on the application and finish.

[0030] (Ink printing method) In the present invention, known methods such as screen printing, inkjet printing, and thermal transfer printing can be used to print ink onto fabric. Screen printing is a method in which ink is pressed onto fabric using a mesh screen. It can handle multicolor and three-dimensional designs and is suitable for silicone inks, plastisol inks, and water-based inks. It is suitable for mass production and is widely used for printing on T-shirts, bags, etc. Inkjet printing is a method in which ink is sprayed directly onto fabric using a printer. It is suitable for detailed designs and small-lot production and is often used with water-based inks. It is suitable for small-lot printing because it requires little preparation work. Thermal transfer printing is a method in which ink is printed onto a special transfer material and then fixed to the fabric by applying heat. It is suitable for plastic and polyester materials and can print complex designs in a short time. These printing methods are selected appropriately depending on the design and type of fabric.

[0031] (Ink curing method) In the present invention, known methods such as heat curing, UV curing, air drying, moisture curing, and oxygen curing can be used to harden the ink. Heat curing is a method of hardening by heating. When heat is applied to ink such as plastisol ink or epoxy ink, a chemical reaction occurs, hardening it and adhering it to the fabric. A dedicated dryer or heat press is usually used. UV curing is a method of hardening instantly by exposing it to ultraviolet light. UV curable ink hardens instantly by exposing it to ultraviolet light. This method is quick-hardening and the ink does not dry in the air, making it possible to print with great precision. Air drying is a method of drying the ink naturally in the air. Water-based ink penetrates the fabric and dries in the air over time, hardening naturally. Although the hardening speed is slow, It is easy to use as it does not require any special equipment. Moisture curing is a method of curing by reacting with moisture in the air. This type is mainly used in silicone inks and some polyurethane inks, which harden by absorbing moisture, and can achieve high adhesion while retaining flexibility. Oxygen curing is a method of curing by reacting with oxygen in the air. It is particularly used in oil-based inks and some special inks, and hardens gradually when in contact with oxygen. Each curing method is selected appropriately depending on the type of ink used and its application.

[0032] (printing) In the present invention, "printing" refers to the technique of applying or transferring materials such as ink or dye onto the surface of a specific medium (such as fabric) to express visual information such as designs, letters, and figures.

[0033] (combined) As used herein, the term "bond" refers to any bond capable of holding two objects in close contact, such as chemical bonds such as ionic bonds and covalent bonds, hydrogen bonds, bonds based on intermolecular forces, and bonds based on dispersion forces.

[0034] In this embodiment of the present invention, the recesses formed on the surface of the fabric are bonded to the cured ink. Meanwhile, the solid magnetic material placed in the recesses may or may not be bonded to the cured ink. The cured ink covering the recesses is bonded to at least the periphery of the recesses, and the solid magnetic material placed in the recesses is "fixed" by being enclosed by the recesses and the cured ink. Here, "fixed" does not necessarily mean being strictly fixed, and slight displacement (play) in the enclosed space is permitted.

[0035] According to this aspect of the present invention, ink is applied by printing using a method such as screen printing to recesses in fabric where solid magnetic material is disposed, and then cured to cover the recesses and the solid magnetic material, forming a cured product of the ink that bonds with the recesses. This cured product can easily fix the solid magnetic material to the fabric. Therefore, by performing a magnetization process at any appropriate timing if necessary, a method for efficiently manufacturing a textile product with a fixed magnet (hereinafter referred to as a "magnet-fixed textile product") using printing technology can be provided. Furthermore, because the printed cured product covers the recesses in the fabric and the solid magnetic material disposed therein, a method for manufacturing a magnet-fixed textile product with a good appearance can be provided. Furthermore, by using printing technology, a method for manufacturing a magnet-fixed textile product with excellent design can be provided by freely placing the cured product of the ink on the recesses in the fabric where solid magnetic material is disposed and on the surface of other parts of the fabric.

[0036] <Second form> According to a second aspect of the present invention, a method for manufacturing a magnet-fixed textile product can be provided, comprising the steps of: placing a solid magnetic body on the surface of a cloth; applying ink so as to cover at least a portion of the surface and the solid magnetic body; curing the ink to form a cured product that bonds with the surface; and fixing the solid magnetic body to the surface with the cured product.

[0037] According to this embodiment, by printing ink onto the surface of a cloth on which a solid magnetic material is arranged by a method such as inkjet printing and then curing the ink, the solid magnetic material can be easily adhered and fixed to the cloth, and by carrying out a magnetization process at any appropriate timing if necessary, a method for efficiently manufacturing a magnet-fixed textile product using printing technology can be provided. Also, since the cured product of the printed ink covers at least a part of the surface of the cloth and the solid magnetic material arranged thereon, a method for manufacturing a magnet-fixed textile product with a good appearance can be provided. Furthermore, by using printing technology, it is possible to provide a method for manufacturing a magnet-fixed textile product on the surface of the cloth on which the solid magnetic material is arranged and on the surface of other parts of the cloth. It is possible to provide a method for manufacturing magnet-fixed textile products with excellent design by freely arranging the cured ink.

[0038] <3rd form> According to a third aspect of the present invention, there can be provided a method for manufacturing a magnet-fixed fiber product, in the first aspect, wherein the cloth is placed on a table provided with a recessed basin, thereby bending the cloth and forming a portion that will become the recess, the recessed basin being constituted by a magnetic means or a magnetic means being arranged directly below the recessed basin, and the magnetic force exerted by the magnetic means on the solid magnetic body causes the solid magnetic body to move to the portion that will become the recess, thereby forming the recess in which the solid magnetic body is arranged on the surface of the cloth.

[0039] According to this embodiment, in order to form a recess in which a solid magnetic material is disposed on the surface of a fabric, a table with a recessed basin is used. When the fabric is placed on the table, the fabric bends and recesses at the recessed basin. The solid magnetic material is then disposed in the recess (the portion that will become the recess). Here, the recessed basin is composed of a magnetic means, or a magnetic means is disposed directly below the recessed basin. The solid magnetic material is attracted to the magnetic means by magnetic force, sliding over the fabric to the portion that will become the recess. As a result, the solid magnetic material fits into the recessed basin via the fabric, and the recess in which the solid magnetic material is disposed is formed on the surface of the fabric.

[0040] (Magnetic means disposed on the base) The magnetic means constituting the basin portion of the base or the magnetic means fixedly positioned directly below the basin portion is preferably an iron permanent magnet or a ferromagnetic material such as iron. Specific examples include rare-earth magnets such as neodymium magnets and samarium-cobalt magnets, alnico magnets, and ferrite magnets. These permanent magnets exert strong magnetic forces and are particularly suitable for applications requiring strong fixing. When the magnetic means is a ferromagnetic material such as iron, the ferromagnetic material may or may not be magnetized. However, if the solid magnetic material is not magnetized, the ferromagnetic material must be magnetized. Electromagnets can also be used as magnetic means. Electromagnets that generate magnetic force by passing current through a coil allow for easy on / off control and control of magnetic field strength, allowing for flexible operation depending on the situation. Electromagnets, such as solenoids with iron cores and other electromagnets, can also be selected depending on the application. When the solid magnetic body is a magnet and a permanent magnet or electromagnet is used as the magnetic means, the orientation (front or back, or rotational position around the vertical axis) of the magnet placed in the recess on the surface of the fabric can be freely set by adjusting the orientation of the permanent magnet or electromagnet (or the positive or negative current).

[0041] <4th form> According to a fourth aspect of the present invention, there can be provided a method for manufacturing a magnet-fixed textile product in the third aspect, in which a plurality of recesses in which solid magnetic bodies are arranged are present on the surface of the cloth, and the ink is simultaneously applied by printing to one recess in which the solid magnetic body is arranged and another recess in which the solid magnetic body is arranged.

[0042] According to this embodiment, ink is applied to the recesses in which the solid magnetic material is placed using a printing technique such as screen printing or inkjet printing, so even if there are multiple recesses in which the solid magnetic material is placed, the ink can be applied efficiently without much effort. Note that "applied at once" means that ink is not applied individually and independently to each recess, but rather, for example, by a single action such as moving a squeegee in screen printing, ink is pushed out from meshes in multiple locations almost simultaneously, and ink is applied at once to the recess where a certain solid magnetic body is placed and the recess where another solid magnetic body is placed.

[0043] <5th form> According to a fifth aspect of the present invention, there can be provided a method for manufacturing a magnet-fixed fiber product, in which, in the fourth aspect, the cured product covers the recesses and the solid magnetic material, and the upper surface of the cured product has a height of 0.1 mm or more and 3 mm or less, more preferably 0.5 mm or more and 2 mm or less, from the level of the surface of the fabric other than the recesses.

[0044] 2, in order to ensure appearance, adhesion, and durability, the upper surface 31s of the cured ink that covers the recesses and the solid magnetic material is located at a height of 0.1 mm to 3 mm, more preferably 0.5 mm to 2 mm, above the level of the surface 12s of the fabric other than the recesses. According to this embodiment, the solid magnetic material is not visible from the outside, and only the nearly flat upper surface of the cured material that is slightly raised from the fabric is visible from the outside. Therefore, a method for manufacturing a magnet-fixed fiber product in which the solid magnetic material is tightly fixed to the fabric and has excellent appearance can be provided.

[0045] <6th form> According to a sixth aspect of the present invention, in the fifth aspect, the height H of the solid magnetic body and the depth D of the recessed portion are inequalities -3mm ≦ HD ≦ 1mm, and more preferably, the inequality -1.5mm ≦ HD ≦ 0.5mm It is possible to provide a method for manufacturing a magnet-fixed fiber product that satisfies the above requirements.

[0046] According to this embodiment, since (HD) is 1 mm or less, more preferably 0.5 mm or less, the top of the solid magnetic material placed in the recess is located slightly above or below the surface of the fabric other than the recess, so that even when the screen in screen printing or the ejection head in inkjet printing is moved closer to the upper surface of the fabric, the solid magnetic material placed in the recess does not interfere with its movement, allowing for a smooth printing process and ensuring the flatness of the upper surface of the applied ink. Furthermore, according to this embodiment, since (DH) is 3 mm or less, more preferably 1.5 mm or less, the amount of ink that needs to be applied to the recess where the solid magnetic material is placed in order to form a cured ink product is not too large, allowing for the printing process to be carried out with a relatively small amount of ink and in a short time.

[0047] <7th form> According to a seventh aspect of the present invention, there is provided the method for producing a textile product with a fixed magnet in the sixth aspect, wherein the ink is a silicone ink. Silicone inks are widely used for printing on clothing and apparel, particularly screen printing, due to their excellent flexibility, durability, and soft feel on fabrics. Depending on their composition, silicone inks can be made to adhere well to inorganic materials such as neodymium magnets, making them suitable for use in the present invention.

[0048] (silicone ink) In this specification, "silicone ink" refers to ink containing a silicone polymer as the main component, and typically contains a crosslinking agent, a pigment, a solvent or dispersant, an additive, and the like as secondary components. Silicone polymers (main component) provide flexibility and durability. Typical compounds include polydimethylsiloxane (PDMS) and polymethylphenylsiloxane. Crosslinking agents are used to crosslink silicone polymer molecules, accelerating curing and improving durability. Typical compounds include methylhydrogensiloxane and silica. Silica can also function as a filler, as described below. Pigments provide color. Typical compounds include carbon, titanium dioxide, iron oxide, and organic pigments. Carbon, such as carbon black, is used as a black pigment. It can also be used to impart conductivity. Titanium dioxide is an inorganic pigment commonly used as a white pigment, providing high opacity and excellent durability, resulting in a vivid white color. Iron oxide is used as an inorganic pigment to create red, brown, yellow, etc., and is highly environmentally resistant and UV-resistant. Organic pigments, such as phthalocyanine blue and azo-based pigments, are often used in the fashion industry. The solvent or dispersant is used to adjust the viscosity of the ink. Typical compounds include toluene, xylene, isopropyl alcohol, and water. Additives include fillers and catalysts used to adjust the physical properties of the ink. Typical compounds are as follows: Inorganic fillers such as silica are used to give silicone ink strength and abrasion resistance; platinum catalysts are used to accelerate the curing reaction of silicone ink, and are highly reactive even at low temperatures, allowing for rapid curing; and peroxide-based curing agents such as dibenzoyl peroxide are sometimes used to control the curing speed of silicone ink.

[0049] Silicone inks may also contain emollients or be used with a primer. Fabric softeners are added to make the finished product smooth and soft, and are used especially in stretchy fashion products and sportswear. Typical compounds include siloxane oil (low molecular weight PDMS). Primers are used to form a layer on the surface of the fabric that enhances adhesion, allowing the silicone ink to adhere firmly to the fabric. Typical compounds include alkoxysilane compounds (e.g., methyltrimethoxysilane and ethoxysilane), vinylsilane, etc. Brighteners and defoamers may also be added to achieve a particular finish. To achieve a three-dimensional effect, a leavening agent (e.g., a carbonate compound such as sodium bicarbonate) that releases gas when heated to create foam may be added. To ensure adhesion, an acrylic compound may be added.

[0050] The combination of these compounds provides silicone ink with high durability, flexibility, and environmental adaptability, enabling it to fix solid magnetic materials to textile products while simultaneously enabling high-quality design printing. In this invention, silicone ink must be printed with a thickness of 0.5 mm to several mm, and silicone inks used for such thick printing are sometimes called high-density inks or gel inks.

[0051] (Silicone ink printing method) In the present invention, methods for printing silicone ink onto textile products include, but are not limited to, screen printing and puff printing. Screen printing uses a coarse mesh, allowing a large amount of ink to be applied to the fabric. By layering multiple inks, it is possible to form layers several millimeters thick. The printing thickness can be controlled by adjusting the mesh size and squeegee pressure and speed. Puff printing uses puff ink containing an expanding agent, which expands when heated, resulting in a three-dimensional finish. After expansion, the silicone layer becomes elastic and can be printed to a thickness of several millimeters.

[0052] (Silicone ink curing method) In the present invention, the method for curing the silicone ink to form a cured product is not limited, but examples thereof include room temperature curing, heat curing, UV curing, and chemical curing. Room temperature curing is a method of natural curing at room temperature. The catalyst reacts with moisture and oxygen in the air to gradually harden. No special equipment is required, and it can be used for small batches and temperature-sensitive materials. Heat curing is a method of hardening silicone ink by applying heat. It is usually heated at 150-180°C for 1-3 minutes, causing the crosslinking agent to react and harden. Heat curing is suitable for mass production because it has a fast hardening speed and high durability. It is used in the manufacture of clothing and industrial products on large-scale production lines, and is suitable for fabrics and materials that can withstand heat. UV curing is a method of curing ink by exposing it to ultraviolet (UV) light. It has fast curing properties and is used when precise designs or short work times are required. UV curing ink contains a photoinitiator, which initiates a crosslinking reaction when exposed to UV light. It is suitable for cases where fast curing is required or when printing precise designs. Chemical curing uses a two-component silicone ink, which hardens by mixing the curing agent and base agent, causing a chemical reaction. It does not require a specific temperature or UV exposure, and hardens over time after mixing, allowing for flexible adjustment of the curing process. It is suitable for temperature-sensitive materials and products with complex shapes, and is used when a highly abrasion-resistant finish is required.

[0053] (Commercially available silicone ink) Commercially available silicone inks that can be used in the present invention include, but are not limited to, the following: "Yama Silicone Ink" by Matsui International Company: A silicone ink with excellent flexibility and durability, suitable for T-shirts and sportswear. Heat-curing type. Polytec Development's "PlatSil™ Silicone Rubber Series": High heat and weather resistance. Suitable for industrial coatings and printing. Thermosetting type. Lancer Group International's "STI Evolution Series": Excellent abrasion resistance, suitable for sportswear and other products requiring high strength. Thermosetting type. "Zodiac Libra Silicone Inks" by Avient Corporation: Excellent heat, water and UV resistance, suitable for printing on clothing. Heat-curing type. "Screen Printing Silicone Ink" manufactured by Dongguan Kedo Silicone Materials Co., Ltd.: Compatible with a variety of substrates, used for screen printing and thermal transfer printing. Thermosetting type. Boston Industrial Solutions' SE Silicone Ink Series: Highly chemical-resistant and adhesive ink suitable for medical devices and sporting goods. Heat-curing. Inkcup's "Silicone Ink SI Series": A versatile ink with excellent flexibility and adhesiveness that can be used on a variety of substrates. Heat-curing type. These silicone inks are available in different composition combinations, and additives may be sold separately. Depending on the application and finish requirements, you can select and use one or more appropriate silicone inks and additives.

[0054] <8th form> According to an eighth aspect of the present invention, there can be provided a textile product comprising a cloth having a recess on the surface to which a solid magnetic body is fixed, the solid magnetic body and the recess being covered with a cured product of ink, and the solid magnetic body being fixed to the recess by the cured product of ink that is bonded to the recess. If necessary, the solid magnetic material of this fiber product can be magnetized to form a magnet-fixed fiber product.

[0055] According to this aspect of the present invention, the cured ink covers the recesses of the fabric and the solid magnetic material disposed therein, so it is possible to provide a textile product with a fixed magnet that has a good appearance. In addition, by freely disposing the cured ink on the recesses of the fabric where the solid magnetic material is disposed or on the surface of other parts of the fabric, It is possible to provide a magnet-fixed fiber product with excellent design.

[0056] (Embodiment) Next, some embodiments of the present invention will be described in more detail with reference to the drawings.

[0057] FIG. 1 is an explanatory diagram of a T-shirt 11, which is a magnet-fixed textile product 1 manufactured by the manufacturing method of the present invention. Multiple cured silicone ink products 31 are arranged on the outer surface of the fabric 12 of the T-shirt 11. The cured products 31 have a designable shape such as a polygon, circle, or star, and their surfaces are flat. Some 31a of the cured products 31 coat and fix solid magnetic material 2, which is a magnet, while others 31b do not. The solid magnetic material 2 is coated by the cured product 31a and cannot be seen from the outside. The silicone ink is applied to the fabric 12 by printing and then hardens to form the cured product 31.

[0058] FIG. 2 is an enlarged cross-sectional view of the cloth 12 in FIG. 1, on which a cured silicone ink 31 is placed to coat and fix a solid magnetic substance 2 (magnet). Arrow 62 indicates the back side of the cloth 12 (the side facing the body when the T-shirt 11 is worn), and arrow 61 indicates the front side of the cloth 12 (the same outside). The outer surface of the cloth 12 has a recess 13 that bends toward the back side, and a solid magnetic substance 2 is placed in the recess 13. The cured silicone ink 31 coats the recess 13 and the solid magnetic substance 2. At least the periphery of the recess 13 is bonded to the cured product 31, and the solid magnetic substance 2 is fixed to the recess 13 by the cured product 31. However, there may be a slight play in the "fixation." The back surface of the cloth 12 has a protrusion 14 extruded by the solid magnetic substance 2. When the T-shirt 11 is worn, the solid magnetic substance 2 comes close to the body via the cloth 12, and the magnetic field generated by the solid magnetic substance 2 (magnet) penetrates the body. Since the solid magnetic body 2 contacts the body at the projections 14 via the cloth 12, the T-shirt 11 feels good against the skin.

[0059] FIG. 3-1 is a cross-sectional view illustrating each step of the manufacturing method according to the present invention, and FIG. 3-2 is a continuation of FIG. 3-1.

[0060] In the process shown in Figure 3A, first, cloth 12 is placed on table 4 provided with recessed basin 41. At this time, cloth 12 near recessed basin 41 bends to form portion 13a that will become the recess. Recessed basin 41 is composed of magnetic means 42 such as permanent magnet 42a or ferromagnetic material 42b, or recessed basin 41 is provided with magnetic means 42 such as permanent magnet 42a or ferromagnetic material 42b directly below it. Solid magnetic material 2 such as a magnet placed on cloth 12 moves in the direction indicated by arrow 21 due to the magnetic force exerted by magnetic means 42, and is positioned in portion 13a that will become the recess.

[0061] FIG. 3B shows the state in which the solid magnetic material 2 is placed in the portion 13a that will become the recess, thereby forming the recess 13 in the surface of the fabric 12. In this state, the height level of the upper surface 2s of the solid magnetic material 2 is higher by a height a than the height level of the upper surface 12s of the fabric 12 other than the recess 13. Here, the height a is preferably −3 mm or more and 1 mm or less, and more preferably −1.5 mm or more and 0.5 mm or less. (Here, when the height a is a negative value, the upper surface 2s of the solid magnetic material 2 is located lower than the upper surface 12s of the fabric 12 other than the recess 13.) This restriction on the height a is based on the requirements of ensuring the flatness of the applied ink surface while ensuring the degree of freedom of movement of the screen and print head during printing. Furthermore, it is necessary to avoid excessive amounts of ink, such as silicone ink, required to cover the recess 13 and the solid magnetic material 2, and to avoid excessively long printing times. When the height a satisfies the above condition, the solid magnetic material 2 can be fixed in the recess 13, and an ink pattern with excellent design can be printed.

[0062] FIG. 3C shows a screen print on the recess 13 on the surface of the fabric 12 where the solid magnetic material 2 is placed. 1 shows a process of applying ink 3, such as silicone ink, by printing. Screen 5 has a pattern consisting of mesh 5a and mask 5b, and is equipped with a frame (not shown). It is placed directly above fabric 12 prior to printing. Ink 3 is applied from above screen 5 in the direction indicated by arrow 32. Ink 3 passes through mesh 5a but not through mask 5b. Ink 3 is spread over mesh 5a by a squeegee (not shown) held at an appropriate angle and pushed in the direction indicated by arrow 32. Ink 3 is applied to the recesses 13 where solid magnetic material 2 is located and other parts of the surface of fabric 12 according to the pattern of mesh 5a.

[0063] (mesh) The coarseness of the mesh that makes up the screen is conventionally expressed in terms of the number of mesh holes (threads) per inch. The larger the number, the finer the mesh; conversely, the smaller the number, the coarser the mesh, the larger the openings, and the easier it is for ink to pass through. Low mesh (60-120) has a coarse opening and allows a large amount of ink to pass through, allowing for thicker ink applications. It is suitable for coarse designs and thick coatings. Medium mesh (150-200) is the range used for general screen printing, and is used for printing on T-shirts and standard materials. High mesh (250-400) has a very fine mesh and is used for precise designs and fine details. It allows less ink to pass through, making it suitable for printing thin, uniform layers. In the present invention, since it is desired to print ink such as silicone ink at a relatively thick thickness of 0.5 mm to several mm, it is preferable to use low mesh or medium mesh, although this is not a limitation.

[0064] Figure (3D) shows the state after the screen printing is completed and the screen 5 is removed, and the ink 3 is applied to the recesses 13 where the solid magnetic material 2 is placed and other parts (not numbered) on the surface of the fabric 12. The ink 3 is in an uncured state.

[0065] FIG. 3E shows the state after the ink 3 has cured from the state shown in FIG. 3D and changed into a cured ink product 31. The base 4 has been removed. The outer (upper) surface of the cloth 12 has a recess 13 that is bent toward the back (lower) side, and a solid magnetic substance 2 is disposed in the recess 13. A cured ink product 31 covers the recess 13 and the solid magnetic substance 2. At least the periphery of the recess 13 is bonded to the cured product 31, and the solid magnetic substance 2 is fixed to the recess 13 by the cured product 31. The back (lower) surface of the cloth 12 has a protrusion 14 that contains the solid magnetic substance 2. When a T-shirt 11 made of cloth 12 that has been magnetized if necessary is worn on the body, the solid magnetic substance 2 comes close to the body via the cloth 12, and the magnetic field from the solid magnetic substance 2, which is a magnet, penetrates the body. [Example]

[0066] An example in which a magnet is fixed to a stretchable synthetic fabric having a thickness of 1 mm will be described. (Material preparation) A 1 mm thick stretchable fabric (80% polyester, 20% polyurethane, manufactured by Gunsen Co., Ltd., model number AP61491) was prepared, and 18 5 mm diameter button-type neodymium magnets (4.9 mm diameter, 0.9 mm thickness, manufactured by Himeji Electronics Co., Ltd.) were used. Silicone ink was used to fix the magnets to the fabric. (Silicone ink preparation and fixing method) The silicone ink used was "Shin-Etsu Silicone, Model No. KE-1310ST" manufactured by Shin-Etsu Chemical Co., Ltd. This ink was used to fix the magnets to the above-mentioned cloth by screen printing. A table with 18 recessed portions, each 7 mm in diameter and 2 mm deep, was used as a base for placing the cloth. A regular hexagonal mesh (100 mesh) with a side length of 8 mm was placed on the portions corresponding to the recessed portions. Screen printing was performed to fix the magnets to the fabric using a screen with 18 magnets (diameter x width x width). (thermosetting treatment) After coating and fixing the magnet to the fabric with silicone ink, the ink was cured by holding it at 130°C for 30 seconds. The upper surface of the cured product was flat and had a regular hexagonal shape. The cured product adhered tightly to the fabric, and the magnet was firmly fixed to the fabric. (Bending test) A folding test was conducted to evaluate the durability of the fabric with the magnets fixed to it in this example. In the test, the following procedure was repeated 50 times: "The fabric with the magnets fixed to it was folded in half along a certain straight line, returned to its original state, folded in half again face down along the same straight line, and returned to its original state." The test results showed that the cured product covering the recessed portion where the magnet was fixed maintained good adhesion to the fabric, and no cracks occurred. (Washing durability test) To evaluate washing durability, the fabric with the magnets of this example fixed thereto was placed in a washing machine (NA-W50B1-W manufactured by Panasonic Corporation) along with 23 L of tap water and washed for 30 minutes in the wash mode. This procedure was repeated 10 times. As a result, the cured product covering the recesses where the magnets were fixed maintained good adhesion to the fabric and no cracks occurred. (result) This example confirmed that the neodymium magnet was securely fixed to the stretchable fabric using the cured silicone ink, and that the fabric exhibited sufficient durability in bending tests and washing tests. [Industrial Applicability]

[0067] The present invention provides a method for efficiently manufacturing textile products with fixed magnets that have a good appearance using printing technology. The present invention also provides magnet-fixed textile products that have the same configuration as textile products obtained using the above manufacturing method. The textile products to which solid magnetic materials such as magnets can be fixed using the method of the present invention are diverse, including clothing such as shirts, socks, and supporters, as well as fabrics and pillowcases used as raw materials for clothing. The present invention has broad industrial applicability in the apparel industry and elsewhere. [Explanation of symbols]

[0068] 1. Magnet-fixed textile products 11 T-shirt 12 Cloth 12s Upper surface of fabric (part other than recess) 13 Recess 13a Part to be recessed 14 Protrusion 2 Solid magnetic material 2s Upper surface of solid magnetic body 21 Arrow indicating the direction of movement of solid magnetic body H Height of solid magnetic body 3. Ink 31 Cured ink 31s Upper surface of cured ink 32 Arrow indicating the ink application direction 4 units 41 Dent Dent Depth 42 Magnetic means 42a Permanent magnet 42b Ferromagnetic material 5 screens 5a Mesh 5b Mask 61 Arrow indicating the front side (outside) 62 Arrow indicating the back side (towards the body) 101 Magnet-fixed textile products (prior art) 102 Magnet 106 Hot melt 106a Patch 106b Hardened adhesive 111 T-shirt 112 Cloth 114 Protrusion 161 Arrow indicating the front side (outside) 162 Arrow indicating the back side (body side)

Claims

1. forming recesses on the surface of the fabric, in which solid magnetic material is disposed; applying ink so as to cover the recess and the solid magnetic material; a step of curing the ink to form a cured product that is bonded to the recesses, and fixing the solid magnetic material to the recesses by the cured product; Equipped with A method for manufacturing a magnet-fixed textile product, wherein a plurality of recesses in which solid magnetic bodies are arranged are present on the surface of the fabric, and the ink is simultaneously applied by printing to one recess in which the solid magnetic body is arranged and another recess in which the solid magnetic body is arranged.

2. The manufacturing method according to claim 1 , wherein the printing is screen printing.

3. placing the cloth on a table provided with a recessed tray to bend the cloth, thereby forming a portion to be the recessed portion; The recessed portion is constituted by a magnetic means, or a magnetic means is disposed directly below the recessed portion, 3. The manufacturing method according to claim 2, wherein the magnetic means applies a magnetic force to the solid magnetic body, causing the solid magnetic body to move to a portion that will become the recess, thereby forming the recess in which the solid magnetic body is disposed on the surface of the fabric.

4. 3. The manufacturing method according to claim 2, wherein the cured material covers the recesses and the solid magnetic material, and the upper surface of the cured material has a height of 0.1 mm or more and 3 mm or less from the level of the surface of the fabric other than the recesses.

5. The height H of the solid magnetic body and the depth D of the recessed portion are expressed by the inequality -3mm ≦ HD ≦ 1mm The method according to claim 3, wherein the above formula (1) is satisfied.

6. The manufacturing method according to claim 1 , wherein the ink is a silicone ink.

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