Method for arranging solid magnetic materials and method for manufacturing magnet-fixed fiber products

Abstract

The objective is to provide a method for efficiently manufacturing textile products with magnets attached, and a magnet-attached textile product having the same configuration as the textile product obtained using the manufacturing method. [Solution] A method for manufacturing a magnet-fixed fiber product 1, comprising the steps of: forming a recess 13 on the surface of a cloth 12 in which a solid magnetic material 2 is placed; applying ink 3 so as to cover the recess 13 and the solid magnetic material 2; and curing the ink 3 to form a cured product 31 bonded with the recess 13, thereby fixing the solid magnetic material 2 in the recess 13. Preferably, the ink 3 is a silicone ink, and a portion 13a to become the recess 13 is formed by placing the cloth 12 on a base 4 provided with a recessed tray 41, a magnetic means 42 is placed directly below the recessed tray 41, and the magnetic force exerted by the magnetic means 42 on the solid magnetic material 2 moves the solid magnetic material 2 to the portion 13a to become the recess 13.

Description

Technical Field

[0001] The present invention relates to a textile product with a magnet fixed thereto and a method for arranging solid magnetic bodies used in its manufacture.

Background Art

[0002] When a textile product with a magnet fixed thereto is worn on the human body, it is expected to have an effect on treating neuralgia and muscle pain such as low back pain and stiff shoulders due to the action of blood vessel dilation and blood circulation promotion by the magnetic field.

[0003] As methods for fixing magnets to clothing such as shirts, socks, supporters, etc., fabrics as raw materials for clothing, and textile products such as pillow covers, conventionally, methods such as sewing using patches and fusion using hot melt have been used. The method of sewing using a patch has poor production efficiency and inferior mass productivity. The method of fusion using hot melt is currently the most widely used. "Hot melt" refers to a material in which a heat-fusible adhesive is laminated on a patch. In this method, a magnet is temporarily fixed to the surface of the hot melt on the side of the heat-fusible adhesive, and when heating while pressing the hot melt with the magnet temporarily fixed thereto against a cloth (textile product), as shown in FIG. 5, the three members of the patch 106a, the magnet 102, and the cloth 112 are heat-fused, and the magnet is fixed to the cloth. This method has higher production efficiency than the method of sewing using a patch, but it takes time because it is necessary to cut the hot melt into a shape such as a circle before temporarily fixing the magnet, the hot melt after heat fusion is hard and lacks flexibility and has a poor texture, and as shown in FIGS. 4 and 5, when heat-fusing, the magnet 102 pushes the cloth 112 outward from the back side, so there are drawbacks such as bumps 114 like warts on the front side (outer side) of the cloth, resulting in a poor appearance.

[0004] Patent Document 1 describes an invention for fixing permanent magnets to futon fabric using hot melt adhesive. In this invention, a pressing plate with holes is used to heat and melt the hot melt adhesive, thereby fixing the permanent magnets to the futon fabric. Because a pressing plate with holes larger in diameter than the magnets is used, the force with which the magnets push the futon fabric outward during heat fusion is weak, and the wart-like protrusions that appear on the surface of the futon fabric are not noticeable. However, this method is time-consuming to align the pressing plate with holes with the magnets, and it is also necessary to cut the hot melt adhesive into shapes such as circles in advance, making it unsuitable for mass production.

[0005] Patent Document 2 describes an invention for imparting magnetism to textile products in a way that balances comfort as a textile product with the effects of magnetism, by uniformly dispersing magnetic powder in a binder and printing it in a dot pattern on the textile product, and then performing magnetic field orientation treatment, heat treatment, and magnetization treatment. However, in this invention, the magnetic force obtained by the magnetization treatment of the printed magnetic powder is weak, and little health benefit from magnetism can be expected.

[0006] Patent Document 3 describes a technology for adding additional functionality to a silicone molded body that has anti-slip properties. Conventionally, the structure consisted of a three-layer design: a silicone layer with a functional material such as a magnet embedded in the top, a fiber layer in the middle, and a heat-activated adhesive layer at the bottom. However, this technology eliminates the middle fiber layer and directly integrates the silicone layer by bonding a thermoplastic resin to the heat-activated adhesive layer. This results in a silicone molded body that can be attached to clothing and has the property of being resistant to peeling after use. However, producing magnet-fixed textile products by fixing this silicone molded body to clothing using heat pressing is less efficient than fixing magnets using methods such as printing, which will be described later, and is not suitable for producing magnet-fixed textile products that are aesthetically pleasing and diverse. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 63-315069 [Patent Document 2] Japanese Patent Publication No. 2002-129470 [Patent Document 3] Japanese Patent Publication No. 2012-214001 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] The object of the present invention is to provide a method for easily positioning (aligning) a solid magnetic material, such as a magnet, in a predetermined location (a portion that should become a recess) on a fabric for the manufacture of magnet-fixed textile products. [Means for solving the problem]

[0009] This invention was made to solve the above problems, A first divided embodiment of the present invention is a method for arranging a solid magnetic material for manufacturing a magnet-fixed fiber product, wherein a cloth is placed on a base provided with a recessed basin, causing the cloth to bend and forming a portion to be recessed, the recessed basin is composed of a magnetic means, or a magnetic means is placed directly below the recessed basin, and the magnetic force exerted by the magnetic means on the solid magnetic material moves the solid magnetic material to the portion to be recessed, thereby forming the recess on the surface of the cloth in which the solid magnetic material is arranged. The second divided form of the present invention is that, in the first divided form, the height H of the solid magnetic material and the depth D of the recessed basin are equal to the following: -3mm ≤ HD ≤ 1mm This is a method for arranging solid magnetic materials that satisfies the following conditions. A third divided embodiment of the present invention is a method for manufacturing a magnet-fixed fiber product, comprising the steps of forming a recess on the surface of a cloth in which a solid magnetic material is arranged by the solid magnetic material arrangement method of the first or second divided embodiment, and fixing the solid magnetic material in the recess. A first preferred step of the present invention, which includes a method for arranging a solid magnetic material, is a method for manufacturing a magnet-fixed fiber product, comprising the steps of: forming a recess on the surface of a cloth in which a solid magnetic material is arranged; applying ink so as to cover the recess and the solid magnetic material; and curing the ink to form a cured product bonded with the recess, thereby fixing the solid magnetic material in the recess with the cured product.

[0010] A second preferred step of the present invention, which includes a method for arranging a solid magnetic material, is a method for manufacturing a magnet-fixed fiber product, comprising the steps of: arranging a solid magnetic material on the surface of a cloth; applying ink so as to cover at least a portion of the surface and the solid magnetic material; and curing the ink to form a cured product bonded to the surface, thereby fixing the solid magnetic material to the surface with the cured product.

[0011] A third preferred step of the present invention, which includes a method for arranging a solid magnetic material, is a method for manufacturing a magnet-fixed fiber product, wherein in the first embodiment, the cloth is placed on a base provided with a recessed basin to bend the cloth and form the portion to be the recess, the recessed basin is composed of a magnetic means, or a magnetic means is placed directly below the recessed basin, and the magnetic force exerted by the magnetic means on the solid magnetic material moves the solid magnetic material to the portion to be the recess, thereby forming the recess on the surface of the cloth in which the solid magnetic material is arranged.

[0012] A fourth preferred step of the present invention, which includes a method for arranging a solid magnetic material, is a method for manufacturing a magnet-fixed textile product, wherein, in the third embodiment, there are a plurality of recesses on the surface of the cloth in which solid magnetic materials are arranged, and the ink is applied at once by printing to one of the recesses in which a solid magnetic material is arranged and to another recess in which a solid magnetic material is arranged.

[0013] The fifth preferred step including the method for arranging the solid magnetic body of the present invention is, in the fourth step, a method for manufacturing a magnet-fixed fiber product, wherein the cured product covers the recess and the solid magnetic body, and the upper surface of the cured product is 0.1 mm or more and 3 mm or less in height from the level of the surface of the cloth other than the recess.

[0014] The sixth preferred step including the method for arranging the solid magnetic body of the present invention is, in the fifth step, a method for manufacturing a magnet-fixed fiber product, wherein the height H of the solid magnetic body and the depth D of the concave basin satisfy the inequality -3 mm ≤ H - D ≤ 1 mm

[0015] The seventh preferred step including the method for arranging the solid magnetic body of the present invention is, in the sixth step, a method for manufacturing a magnet-fixed fiber product, wherein the ink is silicone ink.

[0016] The eighth preferred fiber product according to the method for arranging the solid magnetic body of the present invention is a fiber product comprising a cloth having a recess on the surface where a solid magnetic body is fixed, wherein the solid magnetic body and the recess are covered with a cured product of ink, and the solid magnetic body is fixed to the recess by the cured product of ink that is bonded to the recess.

Advantages of the Invention

[0017] According to the first divided form of the present invention, due to the magnetic force exerted by the magnetic means on the solid magnetic body, the solid magnetic body is moved to the portion to be the recess, and a recess with the solid magnetic body arranged on the surface of the cloth is formed. Thus, a method can be provided in which the solid magnetic body is positioned in a predetermined position (recess) without the trouble of alignment.

Brief Description of the Drawings

[0018] [Figure 1] FIG. 1 is an explanatory view of a T-shirt with a solid magnetic body such as a magnet fixed according to the present invention. [Figure 2] FIG. 2 is an enlarged cross-sectional view of the portion where the solid magnetic body is fixed in FIG. 1. ​ [Figure 3-1] Figure 3-1 is a cross-sectional view for explaining 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] Figure 4 is an explanatory view of a T-shirt with a magnet fixed according to the prior art. [Figure 5] Figure 5 is an enlarged cross-sectional view of the portion where the magnet is fixed in Figure 4.

Embodiments for Carrying Out the Invention

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

[0020] <First Embodiment> According to the first embodiment of the present invention, a method for manufacturing a magnet-fixed fiber product can be provided, which includes a step of forming a recess on the surface of the fabric where a solid magnetic body is disposed, a step of applying ink so as to cover the recess and the solid magnetic body, and a step of curing the ink to form a cured product that binds to the recess and fixing the solid magnetic body to the recess by the cured product.

[0021] (Fabric and Fiber Products) In this specification, "fabric" and "cloth" are synonymous with "fiber product". In this specification, "fiber product" includes clothing such as shirts, socks, supporters, pants, inners, gloves, hats, scarves, neck warmers, etc., cold-proof and waterproof clothing such as jackets, trousers, coats, windbreakers, raincoats, and further shoes and boots This includes clothing that covers the legs, such as sandals, arm warmers, leg warmers, tights, and stockings; supportive clothing such as wristbands, headbands, neckbands, belts, waist supports, knee supports, and ankle supports; bedding such as pillowcases, duvet covers, bed sheets, towels, blankets, cushion covers, mattress pads, and body pillow covers; household textile products such as tablecloths, curtains, blinds, rugs, and mats; automotive textile products 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 equipment such as tent sheets, hammocks, sleeping bags, and picnic sheets. In addition, "textile products" include fabrics and cloths used as raw materials for the above products and supplies.

[0022] (fiber) In the present invention, the fibers constituting the textile product are not particularly limited. Natural fibers such as cotton, linen, bamboo fiber, wool, and silk, as well as chemical fibers such as rayon, Tencel, polyester, nylon, acrylic, and polyurethane, can be used as desired. These fibers may be used individually, or they may be blended and combined to improve specific performance or to pursue comfort.

[0023] (Methods for constructing textile products from fibers) In this invention, the method of constructing textile products from fibers is not particularly limited. Fibers can be processed using conventionally known techniques such as weaving, knitting, and felting. For example, in the case of woven fabrics, products with both strength and flexibility can be obtained by weaving warp and weft threads alternately. In knitted fabrics, a method of knitting in a loop shape is employed to enhance elasticity and flexibility. Furthermore, in nonwoven fabrics such as felt, products with properties suited to the application can be manufactured by mechanically, thermally, or chemically bonding the fibers. In addition, it is possible to adjust the performance by blending multiple fibers or to apply special coatings to give the products specific functions such as durability, waterproofing, and fire resistance.

[0024] (A recess where a solid magnetic material is placed) In a "recess where a solid magnetic material is placed," the "recess" can be formed either by reducing the thickness of the fabric on the surface of the fabric, or by bending the fabric while keeping its thickness almost the same. When a solid magnetic material taller than the thickness of a thin fabric is placed on it, the "recess" is formed by bending the fabric, as in the latter case.

[0025] (Solid magnetic material) In this specification, "solid magnetic material" means a block-shaped magnetic material having a maximum outer diameter of 1 mm or more, and a ratio of the maximum outer diameter d1 to the minimum outer diameter d2, d2 / d1, of 0.01 or more. The solid magnetic material used in the present invention is not limited, but for example, a block-shaped ferromagnetic material made of neodymium, samarium cobalt, ferrite, etc., with a maximum outer diameter of 1 mm or more and 10 mm or less is preferred. The ferromagnetic powder itself is not included in the "solid magnetic material" if, for example, the maximum outer diameter of the powder is less than 1 mm. However, a bound aggregate of ferromagnetic powder, such as a cured product of a composition liquid containing the powder, or a sintered body formed from the powder, is included in the "solid magnetic material" if the maximum outer diameter of the bound aggregate satisfies the above conditions. The "maximum outer diameter" of an object is the maximum value of its "outer diameter in a specific direction" when its direction is changed in various ways. The "minimum outer diameter" of an object is the minimum value of its "outer diameter in a specific direction" when its direction is changed in various ways. Here, the "outer diameter in a specific direction" of an object is the maximum distance between two points arbitrarily taken on the intersection (there may be multiple intersections) of a line having that direction and the object when the line having that direction is translated in various ways.

[0026] (Timing of magnetization) The solid magnetic material used in this invention may or may not be magnetized. A magnetized solid magnetic material is called a "magnet." When manufacturing a magnet-fixed textile product using the manufacturing method of this invention with an unmagnetized solid magnetic material, the solid magnetic material can be magnetized immediately before, during, or immediately after any appropriate step included in the manufacturing method of this invention. The timing of the magnetization process is arbitrary; for example, the magnetization process may be performed after the textile product, which consists of an unmagnetized solid magnetic material fixed to a cloth, is completed. "Magnification" refers to the process of giving a solid magnetic material or a part thereof a magnetic moment, or the process of increasing the magnitude of that magnetic moment. Here, the magnetic moment of a solid magnetic material or a part thereof refers to the magnetic moment of a magnetic dipole, which asymptotically approaches the magnetic field created by a magnetic dipole at a distance when the magnetic field formed around the solid magnetic material or a part thereof is formed around it.

[0027] (Magnification process) In the magnetization process, for example, a solid magnetic material made of a ferromagnetic material such as neodymium is magnetized by applying a strong external magnetic field to it, either after it has been fixed to the cloth or before it has been fixed to the cloth, thereby giving it a magnetic moment and making it function as a magnet. There are no limit to the magnetization methods, but examples include pulse magnetization and DC magnetization. Pulse magnetization is a magnetization method that uses a pulsed magnetic field, applying a strong magnetic field instantaneously for a short time, making it suitable for high coercivity materials. A solid magnetic material or a cloth to which it is attached is set in a magnetic field generator, and the solid magnetic material is magnetized by applying a pulsed magnetic field. DC magnetization is a method of magnetization that uses a DC (direct current) magnetic field. It involves applying a constant magnetic field for a long period of time and is suitable for low-coercivity materials. Magnetization is performed using devices such as electromagnetic coils.

[0028] (magnet) In this specification, "magnet" refers to an object that forms a magnetic field around it and attracts other magnetic materials, is naturally or artificially magnetized, has a maximum outer diameter of 1 mm or more, and has a ratio of maximum outer diameter to minimum outer diameter of 0.01 or more. From the viewpoint of ease of handling, it is preferable that the "magnet" is 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 it, it is preferable that the "magnet" is not a magnetized product of a cured ink containing magnetic material powder. Suitable magnets for use in this invention include, for example, neodymium magnets, samarium cobalt magnets, ferrite magnets, etc., with a maximum outer diameter of 1 mm or more and 10 mm or less.

[0029] (ink) In this specification, "ink" refers to a liquid that can be printed on fabric and harden and adhere to it. Examples include silicone ink, plastisol ink, water-based ink, UV-curing ink, epoxy ink, and polyurethane ink. Silicone ink is highly flexible and can be used on stretchable fabrics. Plastisol ink is PVC (polyvinyl chloride) based, durable, and can print vividly, especially on dark-colored fabrics. Water-based ink is environmentally friendly, penetrates the fabric, leaving a natural texture and a soft finish. UV-curing ink dries quickly with ultraviolet light, has high water and light resistance, and is suitable for delicate designs. Epoxy ink has very strong adhesive properties after hardening and also has excellent chemical resistance. Polyurethane ink is flexible and abrasion-resistant, especially suitable for stretchable sportswear. These are appropriately selected according to their respective applications and desired finishes.

[0030] (Ink printing method) In this invention, known methods such as screen printing, inkjet printing, and thermal transfer printing can be used for printing ink onto fabric. Screen printing is a method of pressing ink onto fabric using a mesh-like screen. It can also handle multi-color and three-dimensional designs. It 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, and other items. Inkjet printing is a method of spraying ink directly onto fabric using a printer. It is suitable for detailed designs and small-batch production, and water-based inks are often used. Because it requires little preparation work, it is suitable for small-batch printing. Thermal transfer printing is a method of printing ink onto a special transfer material and then fixing it 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 appropriately selected depending on the design and type of fabric.

[0031] (Ink curing method) In this invention, known methods such as thermal curing, UV curing, natural drying, moisture curing, and oxygen curing can be used for curing the ink. Thermal curing is a method of curing by heating. When heat is applied to inks such as plastisol inks and epoxy inks, a chemical reaction proceeds, causing them to harden and adhere to the fabric. A dedicated dryer or heat press is usually used. UV curing is a method of instantaneous curing by applying ultraviolet light. UV-curable ink hardens instantly when exposed to ultraviolet light. This method has immediate hardening properties, and since the ink does not dry in the air, very precise printing is possible. Natural drying is a method of drying the ink naturally in the air. Water-based inks penetrate the fabric and dry in the air over time, hardening naturally. The curing speed is slow, but it is easy to use as it does not require special equipment. Moisture curing is a method of curing by reaction with moisture in the air. Mainly silicone inks and some polyurethane inks are of this type, absorbing moisture and hardening, achieving high adhesion while maintaining flexibility. Oxygen curing is a method of curing by reaction with oxygen in the air. It is particularly used with oil-based inks and some special inks, and hardens gradually upon contact with oxygen. The appropriate hardening method is selected depending on the type of ink and its intended use.

[0032] (printing) In this invention, "printing" refers to a technique for expressing visual information such as designs, characters, and figures by attaching or transferring materials such as inks and dyes to the surface of a specific medium (such as fabric).

[0033] (combination) In this specification, "bond" means any bond that can hold two objects in close contact, including chemical bonds such as ionic bonds and covalent bonds, hydrogen bonds, intermolecular forces, and dispersion forces.

[0034] In this embodiment of the present invention, the recess formed on the surface of the cloth is bonded to the cured ink. On the other hand, the solid magnetic material placed in the recess may or may not be bonded to the cured ink. The cured ink covering the recess is bonded to at least the peripheral edge of the recess, and the solid magnetic material placed in the recess is enclosed and "fixed" by the recess and the cured ink. Here, "fixed" does not mean strictly fixed, and minute displacement (play) in the enclosed space is permitted.

[0035] According to this embodiment of the present invention, ink is printed onto recesses in a cloth on which a solid magnetic material is placed using a method such as screen printing, and the ink is cured so as to cover the recesses and the solid magnetic material, thereby forming a cured product of the ink bonded to the recesses. The solid magnetic material can be easily fixed to the cloth by this cured product. Therefore, by performing a magnetization process at any appropriate timing as needed, a method for efficiently manufacturing a textile product with a magnet fixed to it (hereinafter referred to as a magnet-fixed textile product) using printing technology can be provided. Furthermore, since the printed cured product of the ink covers the recesses in the cloth and the solid magnetic material placed therein, a method for manufacturing a magnet-fixed textile product with a good appearance can be provided. In addition, by using printing technology, the cured product of the ink can be easily applied to the recesses in the cloth on which the solid magnetic material is placed, and to the surface of other parts of the cloth. By arranging the magnets in a specific way, it is possible to provide a manufacturing method for magnetically fixed fiber products with excellent design.

[0036] <Second form> According to a second embodiment of the present invention, a method for manufacturing a magnet-fixed fiber product can be provided, comprising the steps of: placing a solid magnetic material on the surface of a cloth; applying ink so as to cover at least a part of the surface and the solid magnetic material; and curing the ink to form a cured product bonded to the surface, thereby fixing the solid magnetic material 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 placed using a method such as inkjet printing and curing it, the solid magnetic material can be easily adhered to and fixed to the cloth. Therefore, by performing a magnetization process at any appropriate time as needed, a method for efficiently manufacturing magnet-fixed textile products using printing technology can be provided. Furthermore, since the cured printed ink covers at least a portion of the surface of the cloth and the solid magnetic material placed thereon, a method for manufacturing magnet-fixed textile products with a good appearance can be provided. In addition, by using printing technology, the cured ink can be freely placed on the surface of the cloth on which the solid magnetic material is placed, or on the surface of other parts of the cloth, a method for manufacturing magnet-fixed textile products with excellent design can be provided.

[0038] <3rd form> According to a third embodiment of the present invention, in the first embodiment, the cloth is placed on a base provided with a recessed basin to bend the cloth and form the portion to be recessed, the recessed basin is composed of a magnetic means, or a magnetic means is placed directly below the recessed basin, and the magnetic force exerted by the magnetic means on the solid magnetic material moves the solid magnetic material to the portion to be recessed, thereby forming the recess on the surface of the cloth in which the solid magnetic material is placed.

[0039] In this embodiment, in order to form a recess on the surface of a cloth in which a solid magnetic material is placed, a stand having a recessed basin is used, and when the cloth is placed on the stand, the cloth bends and indents at the recessed basin. The solid magnetic material is then placed in this indentation (the part that is to become a recess). Here, the recessed basin is composed of a magnetic means, or a magnetic means is placed directly below the recessed basin, so the solid magnetic material is attracted to the magnetic means by magnetic force and slides across the cloth to the part that is to become a recess. As a result, the solid magnetic material fits into the recessed basin through the cloth, and the recess in which the solid magnetic material is placed is formed on the surface of the cloth.

[0040] (Magnetic means placed on the base) In the base, the magnetic means constituting the recessed basin, or the magnetic means fixed and positioned directly below the recessed basin, are preferably made of iron permanent magnets or ferromagnetic materials such as iron. Specifically, examples include neodymium magnets, rare earth magnets such as samarium cobalt magnets, alnico magnets, and ferrite magnets. These permanent magnets exhibit strong magnetic force and are particularly suitable when fixing force is required. 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, which generate magnetic force by passing current through a coil, allow for easy on / off control and control of magnetic field strength, enabling flexible operation depending on the situation. Electromagnets such as solenoids using iron cores and other electromagnets can also be selected according to the application. If the solid magnetic material is a magnet and a permanent magnet or electromagnet is used as the magnetic means, the orientation of the magnet placed in the recess on the surface of the cloth (front or back, or rotational position around the vertical axis) can be freely set by adjusting the orientation of the permanent magnet or electromagnet (or the positive or negative sign of the current). Cut.

[0041] <4th form> According to a fourth embodiment of the present invention, in the third embodiment, a plurality of recesses on the surface of the cloth in which solid magnetic materials are disposed are provided, and the ink is applied at once by printing to one of the recesses in which the solid magnetic material is disposed and to another recess in which the solid magnetic material is disposed.

[0042] According to this embodiment, ink is applied to the recesses where the solid magnetic material is placed using printing techniques such as screen printing or inkjet printing. Therefore, even if there are multiple recesses where the solid magnetic material is placed, ink can be applied efficiently without requiring much effort. Furthermore, "single-application" means that instead of applying ink to each recess individually and independently, such as first applying ink to a recess where one solid magnetic material is placed, then applying ink to a recess where another solid magnetic material is placed, and so on, a single action, such as moving a squeegee in screen printing, pushes ink out from multiple mesh locations almost simultaneously, applying ink to recesses where one solid magnetic material is placed and recesses where another solid magnetic material is placed all at once.

[0043] <5th form> According to a fifth embodiment of the present invention, in the fourth embodiment, the cured material covers the recess and the solid magnetic material, and the upper surface of the cured material is at a height of 0.1 mm or more and 3 mm or less, more preferably at a height of 0.5 mm or more and 2 mm or less, from the level of the surface of the cloth other than the recess, providing a method for manufacturing a magnet-fixed fiber product.

[0044] In this embodiment, referring to Figure 2, the upper surface 31s of the cured ink coating the recess and the solid magnetic material are located at 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 12s of the fabric other than the recess, from the viewpoint of ensuring appearance, adhesion, and durability. In this embodiment, the solid magnetic material is not visible from the outside, and only the slightly raised, substantially flat upper surface of the cured material is visible from the outside, so that the solid magnetic material is tightly fixed to the fabric and a method for manufacturing a magnet-fixed fiber product with an excellent appearance can be provided.

[0045] <6th form> According to the sixth embodiment of the present invention, in the fifth embodiment, the height H of the solid magnetic material and the depth D of the concave basin are equal to the inequality -3mm ≤ HD ≤ 1mm, Satisfying the inequality, more preferably the -1.5mm ≤ HD ≤ 0.5mm We can provide a method for manufacturing magnetically fixed fiber products that satisfies these requirements.

[0046] In this embodiment, since (HD) is 1 mm or less, more preferably 0.5 mm or less, the uppermost part of the solid magnetic material placed in the recess is located slightly above or below the surface of the fabric in the area other than the recess. As a result, even when the screen in screen printing or the inkjet head is moved closer to the upper surface of the fabric, the solid magnetic material placed in the recess does not obstruct its movement, allowing the printing process to be carried out smoothly and ensuring the flatness of the upper surface of the applied ink. Furthermore, in 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 does not become excessive, allowing the printing process to be carried out with a relatively small amount of ink and in a short time.

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

[0048] (Silicone ink) In this specification, "silicone ink" refers to an ink whose main component is a silicone polymer, and typically includes, as a secondary component, a crosslinking agent, a pigment, a solvent or dispersant, an additive, etc. Silicone polymers (the 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 may also serve as a filler, as will be discussed later. 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 is also sometimes used to impart conductivity. Titanium dioxide is a commonly used inorganic pigment for white, offering high opacity and excellent durability, resulting in a vivid white color. Iron oxide is used as an inorganic pigment for red, brown, and yellow, possessing high environmental resistance and UV resistance. Organic pigments, when used in the fashion industry, may include brightly colored organic pigments such as phthalocyanine blue and azo pigments. Solvents or dispersants are 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 impart strength and abrasion resistance to silicone inks. Platinum catalysts are used to accelerate the curing reaction of silicone inks, exhibiting high reactivity even at low temperatures and achieving rapid curing. Peroxide-based curing agents such as dibenzoyl peroxide are sometimes used to control the curing speed of silicone inks.

[0049] Silicone inks may also contain softeners or be used with a primer. Fabric softeners are added to fabrics to make them smooth and soft, and are particularly used in stretchy fashion items and sportswear. Typical compounds include siloxane oil (low molecular weight PDMS). Primers are used to form a layer on the surface of fibers that enhances adhesion. This ensures that the silicone ink adheres firmly to the fibers. Typical compounds include alkoxysilane compounds (e.g., methyltrimethoxysilane and ethoxysilane) and vinylsilanes. In some cases, glossing agents or defoaming agents may be added to achieve a specific finish. In order to achieve a three-dimensional effect, a leavening agent that releases gas and causes foaming when heated (for example, a carbonate compound such as sodium bicarbonate) may be added. Acrylic compounds may be added to ensure adhesion.

[0050] By combining these compounds, high durability, flexibility, and environmental adaptability of silicone ink are achieved, enabling the fixation of solid magnetic materials to textile products while simultaneously allowing for high-quality design printing. In this invention, silicone ink is printed to a thickness of 0.5 mm to several millimeters. Although it is necessary to do so, silicone inks used for such thick printing are sometimes called high-density inks or gel inks.

[0051] (How to print with silicone ink) In this invention, the method for printing silicone ink onto textile products is not limited, but examples include screen printing and buff printing. In screen printing, a coarse mesh is used, allowing a large amount of ink to be applied to the fabric. By layering the ink in multiple layers, it is possible to form layers with a thickness of several millimeters. The thickness of the print can be controlled by adjusting the mesh size, squeegee pressure, and speed. In buff printing, a puff ink with a leavening agent is used, and when heat is applied, the ink expands, resulting in a three-dimensional finish. After expansion, the silicone layer becomes elastic, and printing up to a thickness of several millimeters is possible.

[0052] (Method of curing silicone ink) In the present invention, the method for curing the silicone ink to form a cured product is not limited, but examples include room temperature curing, thermal curing, UV curing, chemical curing, etc. Room temperature curing is a method of natural curing at room temperature. The crosslinking agents and catalysts contained in the silicone ink react with moisture and oxygen in the air, gradually curing the ink. No special equipment is required, and it can be used for small batches and with temperature-sensitive materials. Thermosetting is a method of curing silicone ink by applying heat. Typically, heating at 150-180°C for 1-3 minutes causes the crosslinking agent to react and harden. Thermosetting is suitable for mass production due to its fast curing speed and high durability. It is used in the manufacture of clothing and industrial products on large production lines and is suitable for heat-resistant fabrics and materials. UV curing is a method of curing ink by irradiating it with ultraviolet (UV) light. It offers rapid curing and is particularly used for precise designs and when short turnaround times are required. UV-curing inks contain photoinitiators, which initiate a cross-linking reaction upon UV irradiation. It is suitable for applications requiring fast curing and precise design printing. Chemical curing uses a two-part silicone ink, where a hardener and a main component are mixed, and a chemical reaction proceeds to cure the ink. It does not require specific temperatures or UV irradiation, and curing takes 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 inks) Examples of commercially available silicone inks that can be used in this invention include, but are not limited to, the following: Yama Silicone Ink, manufactured by Matsui International Company: A silicone ink with excellent flexibility and durability, suitable for T-shirts and sportswear. Thermosetting type. Polytech Development's "PlatSil® Silicone Rubber Series": High heat and weather resistance. Suitable for industrial coatings and printing. Thermosetting type. STI Evolution series from Lancer Group International: Excellent abrasion resistance, suitable for sportswear and products requiring high strength. Thermosetting type. Zodiac Libra Silicone Inks from Avient Corporation: Excellent heat resistance, water resistance, and UV resistance, making them suitable for clothing printing. Thermosetting type. Screen Printing Silicone Ink from Dongguan Kedo Silicone Materials Co., Ltd.: Compatible with a variety of substrates and used in screen printing and thermal transfer printing. Thermosetting type. Boston Industrial Solutions' "SE Silicone Ink Series": A highly chemical-resistant and adhesive ink suitable for medical devices and sporting goods. Thermosetting type. InkCup's "Silicone Ink SI Series": A highly versatile ink with excellent flexibility and adhesion, suitable for a variety of substrates. Thermosetting type. These silicone inks are available in various compositional combinations, and sometimes the additives are sold separately. Depending on the application and desired finish, you can select and use one or more appropriate silicone inks and additives.

[0054] <8th form> According to the eighth embodiment of the present invention, a textile product can be provided which is made of a cloth having recesses on its surface to which a solid magnetic material is fixed, wherein the solid magnetic material and the recesses are covered with a cured ink product, and the solid magnetic material is bonded to the recesses and fixed in the recesses by the cured ink product. This textile product can be transformed into a magnet-fixed textile product by applying a magnetization treatment to a solid magnetic material if necessary.

[0055] According to this embodiment of the present invention, the cured ink coats the recesses in the fabric and the solid magnetic material placed therein, thus providing a magnetically fixed textile product with a good appearance. Furthermore, by freely arranging the cured ink in the recesses of the fabric where the solid magnetic material is placed, or on the surface of other parts of the fabric, a magnetically fixed textile product with excellent design can be provided.

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

[0057] Figure 1 is an explanatory diagram of a T-shirt 11, which is a magnet-fixed fiber product 1 manufactured by the manufacturing method according to 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 decorative shapes such as polygons, circles, and stars, and their surfaces are flat. Some of the cured products 31a cover and fix a solid magnetic material 2, which is a magnet, while some 31b do not cover or fix a solid magnetic material. The solid magnetic material 2 is covered by the cured products 31a and is not visible from the outside. The silicone ink is applied to the fabric 12 by printing and then hardens to become the cured products 31.

[0058] Figure 2 is an enlarged cross-sectional view of the cloth 12 in Figure 1, on which a cured silicone ink 31 is placed to cover and fix the solid magnetic material 2, which is a 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 (likewise the outside). The outer surface of the cloth 12 has a recess 13 that curves toward the back side, and the solid magnetic material 2 is placed in the recess 13. The cured silicone ink 31 covers the recess 13 and the solid magnetic material 2. At least the peripheral edge of the recess 13 is bonded to the cured material 31, and the solid magnetic material 2 is fixed in the recess 13 by the cured material 31. However, there may be a slight amount of play in the "fixing". On the back surface of the cloth 12, there is a projection 14 pushed out by the solid magnetic material 2. When the T-shirt 11 is worn on the body, the solid magnetic material 2 comes close to the body through the cloth 12, and the magnetic field from the solid magnetic material 2, which is a magnet, penetrates the body. Because the solid magnetic material 2 comes into contact with the body via the fabric 12 at the protrusions 14, the T-shirt 11 feels comfortable against the skin.

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

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

[0061] Figure (3B) shows a state in which a recess 13 is formed on the surface of the cloth 12 by placing the solid magnetic material 2 in the portion 13a that is to become a recess. 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 portion of the cloth 12 other than the recess 13, where 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, if the height a is a negative value, the upper surface 2s of the solid magnetic material 2 is located below the upper surface 12s of the portion of the cloth 12 other than the recess 13.) This restriction on the height a is based on the requirement to ensure the flatness of the surface of the applied ink while ensuring the freedom of movement of the screen and print head during printing, and furthermore, to ensure that the amount of ink such as silicone ink required to cover the recess 13 and the solid magnetic material 2 is not too much, and that the printing time does not become too long. When height a satisfies the above conditions, the solid magnetic material 2 can be fixed in the recess 13, and it becomes possible to print an ink pattern with excellent design.

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

[0063] (mesh) The coarseness of the screen mesh is conventionally expressed as the "number of mesh openings (threads) per inch." The larger this number, the finer the mesh; conversely, the smaller the number, the coarser the mesh, with larger openings allowing ink to pass through more easily. Low mesh (60-120) has a coarse mesh and allows for a large amount of ink to pass through, making it suitable for thicker ink applications. It is suitable for rough designs and thick coatings. Medium mesh (150-200) is the range used for general screen printing, such as printing on T-shirts and standard materials. High mesh (250-400) has a very fine mesh and is used when precise designs and fine details are required. It allows for a small amount of ink to pass through, making it suitable for printing thin, uniform layers. In this invention, since we want to print ink such as silicone ink to a thickness of 0.5 mm to several mm, it is preferable, although not limited to, to use a low mesh or medium mesh.

[0064] Figure (3D) shows the state after screen printing is complete and the screen 5 has been removed, with the ink 3 applied to the recess 13 where the solid magnetic material 2 is placed and other parts (unsigned) on the surface of the cloth 12. The ink 3 is in an uncured state.

[0065] Figure (3E) shows the state after the ink 3 has hardened and transformed into the hardened ink product 31, compared to the state shown in Figure (3D). The base 4 has been removed. The outer (upper) surface of the cloth 12 has a recess 13 that curves toward the back (lower) side, and the solid magnetic material 2 is placed in the recess 13. The cured ink 31 covers the recess 13 and the solid magnetic material 2. At least its peripheral edge is bonded to the cured material 31, and the solid magnetic material 2 is fixed to the recess 13 by the cured material 31. On the back (lower) surface of the cloth 12 There is a protrusion 14 that contains a solid magnetic material 2. If necessary, when the T-shirt 11, which is made of a magnetized cloth 12, is worn on the body, the solid magnetic material 2 comes into close proximity to the body through the cloth 12, and the magnetic field produced by the magnetized solid magnetic material 2 penetrates the body. [Examples]

[0066] This document describes an example of fixing magnets to a stretchable fabric made of synthetic fibers with a thickness of 1 mm. (Preparing materials) A 1mm thick stretchable fabric (80% polyester, 20% polyurethane, manufactured by Gunsen Co., Ltd., model number: AP61491) was prepared, and 18 button-type neodymium magnets (4.9mm in diameter, 0.9mm thick, manufactured by Himeji Electronics Co., Ltd.) with a diameter of 5mm were used. Silicone ink was used to fix these magnets to the fabric. (Preparation and fixing method of silicone ink) For the silicone ink used, we used "Shin-Etsu Silicone, model number: KE-1310ST" manufactured by Shin-Etsu Chemical Co., Ltd. Using this ink, we fixed magnets to the fabric by screen printing. As a base for the fabric, we used a stand with 18 recessed areas, each 7 mm in diameter and 2 mm deep. On the areas corresponding to the recessed areas, we used a screen with 18 regular hexagonal meshes (100 meshes / inch) with sides of 8 mm to screen print the magnets to fix them to the fabric. (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 top surface of the cured material is flat and has a regular hexagonal shape. The cured material adheres tightly to the fabric, and the magnet is firmly fixed to the fabric. (Bending test) A bending test was conducted on the fabric to which the magnets of this embodiment were fixed in order to evaluate its durability. In the test, the fabric to which the magnets were fixed was folded in half along a straight line, then unfolded, folded in half again along the same straight line with the reverse side facing out, and then unfolded again. This operation was repeated 50 times. As a result of the test, the cured material covering the recessed area to which the magnets were fixed maintained good adhesion with the fabric, and no cracks occurred. (Washing resistance test) To evaluate the wash resistance, the cloth to which the magnets of this embodiment were fixed was placed in a washing machine (Panasonic Corporation NA-W50B1-W) with 23L of tap water and washed for 30 minutes in the wash mode. This operation was repeated 10 times. As a result, the hardened material covering the recesses to which the magnets were fixed maintained good adhesion with the cloth, and no cracks occurred. (result) This embodiment confirmed that the neodymium magnets were securely fixed to the stretchable fabric using a cured silicone ink, and that they exhibited sufficient durability in bending and washing tests. [Industrial applicability]

[0067] The present invention provides a method for efficiently manufacturing textile products with magnets fixed to them. Furthermore, the present invention provides magnet-fixed textile products having the same structure as the textile products obtained using the above manufacturing method. Textile products to which solid magnetic materials such as magnets can be fixed by the method of the present invention include a wide range of items such as clothing like shirts, socks, and supporters, as well as fabrics used as raw materials for clothing, and pillowcases. The present invention has broad industrial applicability in the apparel industry and other sectors. [Explanation of Symbols]

[0068] 1. Magnetically fixed textile products 11 T-shirts 12 Cloth 12s Upper surface of the fabric (parts other than the recess) 13 Recess 13a Part that should be a recess 14 Protrusion 2 Solid magnetic material 2s Upper surface of the solid magnetic material 21 Arrow H indicating the direction of movement of the solid magnetic material Height of the solid magnetic material 3 Ink 31 Ink cured product 31s Top surface of ink cured product 32. Arrows indicating the direction of ink application. 4 units 41. Concave basin D. Depth of the concave basin 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 (body side) 101 Magnetically fixed textile products (conventional technology) 102 Magnets 106 Hot melt 106a Backing cloth 106b Cured adhesive 111 T-shirt 112 Cloth 114 Protrusion 161 Arrow indicating the front (outside) side 162 Arrow indicating the back side (body side)

Claims

1. This is a method for arranging solid magnetic materials for manufacturing magnetic fiber products. By placing a cloth on a platform provided with a recessed basin, the cloth is bent to form a recessed portion. The recessed basin is composed of a magnetic means, or a magnetic means is positioned directly below the recessed basin. A method for arranging a solid magnetic material, wherein the magnetic force exerted by the magnetic means on the solid magnetic material moves the solid magnetic material to the portion that is to become the recess, thereby forming the recess on the surface of the cloth in which the solid magnetic material is arranged.

2. The height H of the solid magnetic material and the depth D of the concave basin are given by an inequality. -3mm ≦ HD ≦ 1mm A method for arranging a solid magnetic material according to claim 1, which satisfies the requirements.

3. 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 material is arranged by the solid magnetic material arrangement method described in claim 1 or 2; and fixing the solid magnetic material in the recess.

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