Magnetism imparting method, and structure with magnetism imparted thereto

Abstract

To impart magnetism to articles of non-conductive materials and non-magnetic materials (for example, bricks and tiles).SOLUTION: A magnetism imparting method includes: a step (S120) of applying iron sand to a surface 20 of an article 10 of a non-conductive material; and steps (S140-S160) of forming a coating film 40 on the surface 20 to which the iron sand has been applied.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a method for imparting magnetism and to a structure to which magnetism has been imparted (particularly, a structure made of a non-conductive material (bricks, tiles, etc.)). [Background technology]

[0002] Conventionally, powder coatings have been widely used because they are pollution-free, resource-saving coatings, can be applied in thick layers, and have excellent coating film performance such as impact resistance, corrosion resistance, and weather resistance. Electrostatic powder coating is currently widely used as a powder coating, but this coating method has the drawback that it is difficult to form a coating film on non-conductive substrates such as insulating parts, and is not applicable to fields such as building materials, guard fences, glass, and wood that use conductive substrates such as plastics and inorganic materials, and therefore the current situation is that the uses are limited (see, for example, Patent Document 1). However, as a method for forming an electrostatic powder coating on a non-conductive substrate, a method of applying a conductive primer to a plastic molded product has been developed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-106688 Summary of the Invention [Problem to be solved by the invention]

[0004] The inventor of the present application has been studying the possibility of applying powder coating not only to smooth surfaces such as plastic molded products, but also to uneven surfaces of non-conductive materials such as bricks and concrete blocks. In the course of this research, he came up with the idea of ​​applying iron sand to uneven surfaces such as bricks, smoothing the uneven surfaces with the iron sand, and then applying powder coating to the surface. Through trial and error in surface treatment and powder coating using such iron sand, he came up with a method for attaching magnets to non-magnetic materials, which led to the present invention.

[0005] The present invention has been made in consideration of these points, and its main object is to provide a method and a structure for imparting magnetism to articles made of non-conductive and non-magnetic materials (e.g., bricks, tiles, etc.). [Means for solving the problem]

[0006] The method of imparting magnetism according to the present invention is a method of imparting magnetism to an article made of a non-conductive material, and includes the steps of applying iron sand to the surface of the article made of a non-conductive material, and forming a coating film on the surface to which the iron sand has been applied.

[0007] In a preferred embodiment, the step of forming the coating film includes the steps of applying a conductive primer to the surface to which the iron sand has been applied, and performing powder coating using static electricity on the surface to which the conductive primer has been applied.

[0008] In a preferred embodiment, the step of forming the coating film includes attaching a wallpaper film to the surface to which the iron sand has been applied.

[0009] In a preferred embodiment, after the coating film is formed, a metal fitting having a magnet is attached.

[0010] Another method of imparting magnetism according to the present invention is a method of imparting magnetism to an article made of a non-conductive material, and includes the steps of forming an embedded recess in the surface of the article made of a non-conductive material, placing a magnetic member in the embedded recess, and forming a coating film to cover the magnetic member.

[0011] In a preferred embodiment, the magnetic member is at least one selected from the group consisting of an iron plate, a nickel plate, a cobalt plate, a ferromagnetic alloy plate, and a permanent magnet plate. The step of forming the coating film includes a step of applying a conductive primer to the surface of the article, and a step of performing powder coating using static electricity on the surface to which the conductive primer has been applied.

[0012] In a preferred embodiment, the magnetic member is at least one selected from the group consisting of an iron plate, a nickel plate, a cobalt plate, a ferromagnetic alloy plate, and a permanent magnet plate. The step of forming the coating film includes attaching a wallpaper film to the surface of the article.

[0013] Another method of imparting magnetism according to the present invention is a method of imparting magnetism to an article made of a non-conductive material, and includes the steps of forming an embedded recess on the back surface of the article made of a non-conductive material, placing a magnetic member in the embedded recess, and forming an embedded filling portion to cover the magnetic member.

[0014] In a preferred embodiment, the magnetic member is at least one selected from the group consisting of an iron plate, a nickel plate, a cobalt plate, a ferromagnetic alloy plate, and a permanent magnet plate. The method includes forming a coating film on a surface of the non-conductive material article.

[0015] In a preferred embodiment, the step of forming the coating film includes a step of applying a conductive primer to the surface, and a step of performing powder coating using static electricity on the surface to which the conductive primer has been applied.

[0016] In a preferred embodiment, the step of forming the coating film includes attaching a wallpaper film to the surface.

[0017] The non-conductive material structure according to the present invention comprises iron sand applied to a surface of an article made of a non-conductive material, and a coating film formed on the surface to which the iron sand has been applied.

[0018] In a preferred embodiment, the non-conductive article is one selected from the group consisting of a brick, a concrete block, a tile, and plaster, and the coating film is at least one of a powder coating film and a wallpaper film.

[0019] Another non-conductive material structure according to the present invention includes a recess formed on a surface of a non-conductive material article, a magnetic member disposed in the recess, and a coating film formed to cover the magnetic member. The magnetic member is at least one selected from the group consisting of an iron plate, a nickel plate, a cobalt plate, a ferromagnetic alloy plate, and a permanent magnet plate. The coating film is at least one of a powder coating film and a wallpaper film.

[0020] Another non-conductive material structure according to the present invention includes a recess formed in a back surface of a non-conductive material article, a magnetic member disposed in the recess, and a buried filler formed to cover the magnetic member, the magnetic member being at least one selected from the group consisting of an iron plate, a nickel plate, a cobalt plate, a ferromagnetic alloy plate, and a permanent magnet plate.

[0021] In a preferred embodiment, a coating film is formed on the surface of the non-conductive article, the coating film being at least one of a powder coating film and a wallpaper film. Effect of the Invention

[0022] According to the magnetism imparting method of the present invention, magnetism can be imparted to non-conductive materials (and non-magnetic materials) by imparting iron sand to the surface of the non-conductive material and then forming a coating film on the surface to which the iron sand has been applied. As a result, by attaching a magnet (e.g., a neodymium magnet) to the magnetized article, a storage hook can be arranged without drilling holes or applying stickers.

[0023] According to another method of magnetizing the article of the present invention, after forming an embedding recess on the surface of the article made of a non-conductive material, a magnetic member is placed in the embedding recess, and a coating film is formed to cover the magnetic member. As a result, by attaching a magnet (e.g., a neodymium magnet) to the article to which the magnetism has been imparted, a storage hook can be placed without drilling a hole or applying a sticker.

[0024] Furthermore, according to another magnetization method of the present invention, after forming an embedded recess on the back surface of an article made of a non-conductive material, a magnetic member is placed in the embedded recess, and then an embedded filling portion is formed so as to cover the magnetic member. As a result, by attaching a magnet (e.g., a neodymium magnet) to the magnetized article, a storage hook can be placed without drilling holes or attaching stickers. [Brief description of the drawings]

[0025] [Figure 1] 1 is a diagram (photograph substituting a drawing) showing a non-conductive material structure 100 according to an embodiment of the present invention. [Diagram 2] 1 is a diagram (photograph substituting a drawing) showing a brick 12A. [Diagram 3] 13 is a diagram (photograph substituting a drawing) showing a concrete block 12B. [Figure 4] 1 is a flowchart for explaining a magnetism imparting method according to an embodiment of the present invention. [Diagram 5] 1 is a diagram showing a configuration of an electrostatic powder handgun 30 according to the present embodiment. FIG. [Figure 6] 10 is a flowchart illustrating a magnetism imparting method according to another embodiment of the present invention. [Figure 7] FIG. 1 is a cross-sectional view showing a configuration of a non-conductive material structure 100 according to an embodiment of the present invention. [Figure 8] 1 is a diagram (a photograph substituting a drawing) showing a structure 100 according to an embodiment of the present invention. [Figure 9] 1 is a diagram (a photograph substituting a drawing) showing a structure 100 according to an embodiment of the present invention. [Figure 10] 1 is a diagram (a photograph substituting a drawing) showing a structure 100 according to an embodiment of the present invention. [Figure 11] 10 is a flowchart illustrating a magnetism imparting method according to another embodiment of the present invention. [Figure 12] FIG. 1 is a cross-sectional view showing a configuration of a non-conductive material structure 100 according to an embodiment of the present invention. [Figure 13] 1 is a diagram (a photograph substituting a drawing) showing a structure 100 according to an embodiment of the present invention. [Figure 14] 1 is a diagram (a photograph substituting a drawing) showing a structure 100 according to an embodiment of the present invention. [Figure 15] 1 is a diagram (a photograph substituting a drawing) showing a structure 100 according to an embodiment of the present invention. [Figure 16] 1 is a diagram (a photograph substituting a drawing) showing a structure 100 according to an embodiment of the present invention. [Figure 17] 1 is a diagram (a photograph substituting a drawing) showing a structure 100 according to an embodiment of the present invention. [Figure 18] 1 is a diagram (a photograph substituting a drawing) showing a structure 100 according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. In the following drawings, for the sake of brevity, the same reference numerals are used for components and parts that perform the same function, and duplicated descriptions may be omitted or simplified. In addition, the dimensional relationships (length, width, thickness, etc.) in each drawing may not necessarily accurately reflect the actual dimensional relationships. In addition, matters other than those specifically mentioned in this specification that are necessary for carrying out the present invention may be understood as design matters of a person skilled in the art based on the prior art in the field. The present invention can be carried out based on the contents disclosed in this specification and the drawings and the technical common sense in the field. In addition, the present invention is not limited to the following embodiments.

[0027] FIG. 1 is a diagram (representative photograph) showing the configuration of a non-conductive material structure 100 according to an embodiment of the present invention. The structure 100 of this embodiment is composed of an article 10 of a non-conductive material (here, for example, a base material such as a brick, a block (concrete block), a tile, or plaster), and is composed of iron sand applied to a surface 20 of the article (base material) 10, and a coating film 40 formed on the surface 20 to which the iron sand has been applied. A magnet (magnetic member) 50 with a hook 51 can be attached to the surface 20 (40) of the structure 100 of this embodiment. The magnet 50 of this embodiment is, for example, a neodymium magnet.

[0028] Fig. 2 is a diagram (representative photograph) showing a surface 22A of a brick (brick block) 12A, which is one type of non-conductive article 10 of this embodiment. Also, Fig. 3 is a diagram (representative photograph) showing a surface 22B of a concrete block (block) 12B, which is one type of non-conductive article 10 of this embodiment. As shown in Figs. 2 and 3, the surfaces of the brick block 12A and the concrete block 12B are rough and have holes in some places, and if left as is, Powder coating is extremely difficult, even with the application of a conductive primer.

[0029] FIG. 4 shows a flowchart for explaining a magnetism imparting method (a method for magnetizing a non-conductive material or a method for producing a magnetized structure) according to an embodiment of the present invention.

[0030] First, a brick block 12A (or a concrete block 12B) shown in Fig. 2 is prepared as a non-conductive material item 10 (step S100). This non-conductive material item 10 (brick block 12A, concrete block 12B) may be a commercially available item (commercially available building material).

[0031] Next, iron sand is attached to surface 20 of article 10 (12A or 12B) (step S120). Specifically, iron sand is attached to surface 20 (22A, 22B) of article 10 so as to make it smooth, and in order to fix (adhere) the iron sand, a primer (or a primer for baking paint) is used to attach and fix the iron sand to surface 20 of article 10. The primer in this embodiment is, for example, a paint primer for baking paint (product name: Mitchaclone BK·X, manufactured by SomeQ Technology Co., Ltd.), which is a primer for metals based on acrylic resin (thermosetting resin). This is a clear viscous liquid with a specific gravity of 0.88 and a standard application amount of 1000g. The thickness is 6 to 8 μm and 60 to 80 g / m2, and can be applied by spray coating. In this embodiment, the primer can be applied to the surface 20 using a sprayer. After the iron sand and the primer for baked coating are attached to the surface 20 of the article 10, they are dried and fixed. The primer for baked coating of this embodiment (product name: Mitchaclone BK·X) is a primer for baked coating (180°C / 30 minutes) that can be used for high-temperature baking and room temperature drying (up to 2 coats and 2 bakes), and acts like an adhesive.

[0032] Next, a conductive primer (electrically conductive primer) is applied to the surface 20 (22A, 22B) to which the iron sand has been attached (step S140). The conductive primer is a primer that imparts electrical conductivity to a non-conductive material in order to perform powder coating, and is a thermosetting resin that contains a conductive material. The conductive primer in this embodiment is, for example, an electric primer (product name: Psychic Primer, manufactured by Brave Auto Co., Ltd. (trade name: Carbeck)).

[0033] Next, powder coating is performed using static electricity on the surface 20 coated with the conductive primer (step S160). FIG. 5 is a diagram showing an example of the configuration of a powder spraying device (hand gun) 30. The hand gun 30 shown in FIG. 5 includes a spraying device main body 31, a spray head 32, a handle 35, and a compressor line 37. The spraying device main body 31 is provided with a powder paint storage section 34 and a powder paint supply section 36, and the powder paint is sent to the head 32 and applied from the tip of the head 32 to the target (surface 20 of the article 10). The hand gun 30 can generate static electricity and apply the charged powder paint to the target (10).

[0034] The powder paint (colored powder) of this embodiment is a thermosetting powder paint (for example, made of polyester resin). In the case of a thermosetting powder paint, a crosslinking reaction occurs when the paint is heated to form a coating film, and it is usable because it does not soften even when reheated. The powder paint is charged and sprayed onto a grounded object (surface 20 (subject to be coated) of the article 10). The powder paint then adheres to the object (20) by static electricity. Since the powder paint is adhered by static electricity, the object (20) is required to be an object through which electricity flows (typically a conductive material). For this reason, in this embodiment, a conductive primer (electrically conductive primer) is applied in advance. A suitable powder paint for this embodiment is made of polyester resin. The average particle size is, for example, about several μm to several tens of μm, but the particle size is not particularly important as long as it functions as a powder paint.

[0035] Next, after powder coating (step S160), baking (baking drying) is performed (step S180). Baking drying in powder coating requires a temperature of, for example, 160°C to 180°C, and the grating 1000 after the powder coating process is placed in a drying furnace (firing furnace) that can set such a temperature. In this embodiment, baking drying is performed by setting the temperature of the drying furnace (firing furnace) to 160°C to 200°C (in accordance with the specifications of the powder paint) and the drying (firing) time to 15 minutes to 20 minutes.

[0036] After baking and drying, the structure is removed from the drying furnace (firing furnace) to produce a magnetized structure 100 (an article made of a non-conductive material, such as a brick block or concrete block) with a powder coating film 40 formed on the surface 20 (22A, 22B) to which the iron sand has been applied. The structure 100 after baking (structure 100 covered with powder coating film 40) does not allow the iron sand to fall off and is resistant to friction and the like. A magnet 50 can be attached to this magnetized structure 100, as shown in FIG. 1.

[0037] If too much iron sand is applied to the surface 20 of the article 10, the iron sand may flow during firing in the heating furnace (firing furnace), and the powder coating film 40 may not be formed cleanly, so it is desirable to determine appropriate conditions (amount of iron sand, thickness, heating temperature) through experiments, etc. Also, if the amount of iron sand is too little, the adhesive strength of the magnet 50 may be weakened and the smoothness of the surface 20 of the article 10 may be deteriorated, so care should be taken. The amount of iron sand depends on various conditions, but it is recommended that it be applied to the surface 20 of the article 10 to a thickness of about 0.3 mm to 2 mm, for example.

[0038] According to the magnetism imparting method (manufacturing method for the magnetic structure 100) of this embodiment, magnetism can be imparted to the non-conductive material (and the non-magnetic material article) by imparting iron sand to the surface 20 of the article 10 made of a non-conductive material and then forming a coating film 40 on the surface 20 to which the iron sand has been applied. As a result, by attaching a magnet (e.g., a neodymium magnet) to the article 10 (structure 100) to which magnetism has been imparted, the storage hook 50 (51) can be arranged without drilling holes or applying stickers.

[0039] Next, a magnetism imparting method (a method for magnetizing a non-conductive material or a method for manufacturing a magnetized structure) and a magnetized structure 100 according to another embodiment of the present invention will be described with reference to FIGS.

[0040] Fig. 6 shows a flow chart for explaining a magnetism imparting method (a method for magnetizing a non-conductive material, or a method for manufacturing the magnetized structure 100) according to an embodiment of the present invention. Fig. 7 shows a schematic cross-sectional structure of the magnetized structure 100 of this embodiment. Figs. 8 to 10 are diagrams (representative photographs) showing the magnetized structure 100 of this embodiment.

[0041] As shown in FIG. 7, in the magnetized structure 100 of this embodiment, an embedded recess 21 is formed on the surface (upper surface 22) of the article 10 made of a non-conductive material. A magnetic member (particularly, a magnetic plate) 29 is disposed in the embedded recess 21. In the configuration of this embodiment, a coating film 40 is formed so as to cover the magnetic member (magnetic plate) 29. The magnetic member 29 of this embodiment is a member (plate portion, particularly, an iron plate) made of a material (ferromagnetic material) that is attracted to a magnet. The thickness of the magnetic plate 29 (iron plate) is preferably 0.5 mm or more (or may be 1 mm or more, 3 mm or more, or 5 mm or more). The thicker the magnetic member 29, the more the adhesion force of the magnet 50 can be improved. The magnetic member 29 is made of a ferromagnetic material, and is, for example, an iron plate, a nickel plate, a cobalt plate, or a ferromagnetic alloy plate. It is also possible to dispose a member (permanent magnet plate) made of a magnet (for example, a neodymium magnet or a ferrite magnet) as the magnetic member (magnetic plate) 29. When arranging the magnet plates, it is important to arrange them so that the south and north poles of the magnet 50 attached to the magnetized structure 100 and the south and north poles of the embedded magnet plate (29) are aligned with each other. Neodymium magnet plates have the advantage of strong magnetic force. Ferrite magnet plates also have the advantage of being relatively inexpensive and rust-resistant. Examples of permanent magnets include ferrite magnets, cobalt magnets, alnico magnets, and neodymium magnets, and examples of shapes include plate-shaped, round, square, ring-shaped, and tile-shaped.

[0042] First, a brick block 12A (or a concrete block 12B) shown in Fig. 2 is prepared as a non-conductive material item 10 (step S200). As described above, this non-conductive material item 10 (brick block 12A, concrete block 12B) may be a commercially available item (commercially available building material).

[0043] Next, the surface (upper surface) 22 of the non-conductive material article 10 is cut to form the embedding recess 21 (step S210). Specifically, the surface (upper surface) 22 of the non-conductive material article (brick block 12A, concrete block 12B) is cut with a cutting tool (cutter, grinder, etc.) to form the embedding recess (groove, recess, opening) 21 corresponding to the magnetic plate (iron plate) 29. Note that a method of forming a brick block (or a concrete block) with the embedding recess 21 using a mold or the like may also be employed.

[0044] Next, a magnetic member (here, an iron plate) 29 is embedded in the embedding recess 21 (step S220). The iron plate 29 is placed and fixed (adhered) in the embedding recess 21 using an adhesive (for example, heat-resistant adhesive putty, etc.). As the adhesive in this embodiment, for example, a high-temperature heat-resistant putty (product name: Heat Metal, manufactured by Asahi Engineering Co., Ltd.) can be used.

[0045] Next, after embedding the magnetic member (iron plate) 29, a surface treatment (smoothing treatment) is performed using a baked paint primer (product name: Mitchacron BK-X) and / or an inorganic material (e.g., alumina) so that the surface (upper surface) 22 is finished flat (smooth) (step S230). In Fig. 7, the part where the magnetic member (iron plate) 29 is embedded is the embedded part 25. Fig. 8 shows this state.

[0046] Next, a conductive primer (conductive primer) is applied to the surface 22 of the article 10 (step S240). This conductive primer application step (step S240) is as described above. Thereafter, powder coating (step S260) and baking and drying (step S280) are performed. As described above, powder coating (step S260) and baking and drying (step S280) are performed.

[0047] In this manner, a magnetized structure 100 (an article made of a non-conductive material, such as a brick block or concrete block) on which a powder coating film 40 is formed can be produced. The structure 100 covered with the powder coating film 40 is as shown in FIG. 9. Since the surface of the structure 100 after baking is covered with the coating film (applied film / painted film) 40, it has a beautiful appearance and is resistant to friction and the like. A magnet 50 can be attached to this magnetized structure 100, as shown in FIG. 10.

[0048] Next, a magnetism imparting method (a method for magnetizing a non-conductive material or a method for manufacturing a magnetized structure) and a magnetized structure 100 according to another embodiment of the present invention will be described with reference to FIGS.

[0049] Fig. 11 shows a flow chart for explaining a magnetism imparting method (a method for magnetizing a non-conductive material, or a method for manufacturing the magnetized structure 100) according to an embodiment of the present invention. Fig. 12 shows a schematic cross-sectional structure of the magnetized structure 100 of this embodiment. Figs. 13 to 15 are diagrams (representative photographs) showing the magnetized structure 100 of this embodiment.

[0050] As shown in FIG. 12, in the magnetized structure 100 of this embodiment, an embedded recess 21 is formed on the surface (lower surface 24) of the article 10 made of a non-conductive material. A magnetic member (magnetic plate) 29 is disposed in the embedded recess 21. In the configuration of this embodiment, a coating film 40 is formed so as to cover the magnetic member 29. The magnetic member 29 of this embodiment is a plate portion (particularly, an iron plate) made of a material (ferromagnetic material) that is attracted to a magnet. The thickness of the magnetic member 29 (iron plate) is preferably 0.5 mm or more (or may be 1 mm or more, 3 mm or more, or 5 mm or more). The thicker the magnetic member 29, the more the adhesion force of the magnet 50 can be improved. The magnetic member 29 is made of a ferromagnetic material, and is, for example, an iron plate, a nickel plate, a cobalt plate, or a ferromagnetic alloy plate. It is also possible to dispose a member (plate) of a magnet (for example, a neodymium magnet or a ferrite magnet) as the magnetic member (magnetic plate) 29. When arranging the magnet plates, it is important to arrange them so that the south and north poles of the magnet 50 attached to the magnetized structure 100 and the south and north poles of the embedded magnet plate (29) are aligned with each other.

[0051] First, a relatively thin tile (or thin plaster, brick, etc.) is prepared as a non-conductive material article 10 (step S300). This relatively thin non-conductive material article 10 (tile, etc.) may be a commercially available product (commercially available building material).

[0052] Next, the surface (lower surface) 24 of the non-conductive article 10 is cut to form the embedded recess 21 (step S310). Specifically, the lower surface 24 of the non-conductive article (tile, etc.) 10 is cut with a cutting tool (cutter, grinder, etc.) to form the embedded recess (groove, recess, opening) 21 corresponding to the magnetic plate (iron plate) 29. Note that a method of forming the tile 10 (or plaster, etc.) with the embedded recess 21 using a mold or the like may also be employed.

[0053] Next, a magnetic plate (here, an iron plate) 29 is embedded in the embedding recess 21 (step S320). The iron plate 29 is placed and fixed (adhered) in the embedding recess 21 using an adhesive (for example, heat-resistant adhesive putty, etc.). For example, the adhesive in this embodiment may be a high-temperature heat-resistant putty (product name: Heat Metal, manufactured by Asahi Engineering Co., Ltd.).

[0054] Next, after embedding the magnetic plate (iron plate) 29, a baked paint primer (product name: Mitchacron BK-X) and / or an inorganic material (e.g., alumina) is used to form an embedded filling portion 26 covering the magnetic plate 29 so that the lower surface 24 is finished flat (smooth). In Fig. 12, the portion where the magnetic plate (iron plate) 29 is embedded is the embedded portion 25. Fig. 13 shows this state.

[0055] Next, a conductive primer (conductive primer) is applied to the upper surface (surface) 22 of the article 10 (step S340). This conductive primer application step (step S340) is as described above. Thereafter, powder coating (step S360) and baking and drying (step S380) are performed. As described above, powder coating (step S360) and baking and drying (step S380) are performed.

[0056] In this manner, a magnetized structure 100 (an article made of a non-conductive material, such as a tile or plaster) on which a powder coating film 40 is formed can be produced. The structure 100 covered with the powder coating film 40 will then be as shown in FIG. 14. Since the surface of the structure 100 after baking is covered with the coating film (applied film / painted film) 40, it has a beautiful appearance and is resistant to friction and the like. A magnet 50 can be attached to this magnetized structure 100, as shown in FIG. 15.

[0057] The method of this embodiment is carried out by scraping the back surface 24 of a relatively thin article 10 (structure) such as a tile, and embedding a magnetic plate (iron plate) 29 from behind. If the distance between the magnetic plate (iron plate) 29 and the top surface 22 is too large, the magnet 50 will not be strongly attached. Conversely, if the distance is too small, the magnet 50 will be strongly attached, but the risk of the top surface 22 cracking, chipping, or being damaged increases. In the configuration of this embodiment, the risk can be reduced by reinforcing and protecting the top surface (surface) 22 with a powder coating coating film 40.

[0058] 16 and 17 show the attractive force of the magnet 50 in the structure 100 of this embodiment. FIG. 16 shows the structure 100 (shown in FIG. 10) made of bricks 10, and a plastic bottle containing 2 liters (2 kg) of solution can be suspended by the magnet 50. FIG. 17 shows the structure 100 (shown in FIG. 15) made of tiles 10, and a plastic bottle containing 2 liters (2 kg) of solution can also be suspended by the magnet 50. From this example, the magnitude (strength) of the magnetic force (holding force of the magnet 50) of the structure 100 of this embodiment can be understood.

[0059] In the above-described embodiment, a powder-coated film is used as the coating film 40 for protecting the surface 20 of the structure 100 (article 10), but the present invention is not limited to this. As shown in FIG. 18, a wallpaper film 40 can be used as the coating film for protecting the surface 20 of the structure 100 (article 10). The wallpaper film 40 of this embodiment includes not only a film-like structure but also a sheet-like structure, and an example of this is a decorative PVC film with adhesive (for example, product name: DiNoc, made by 3M). The wallpaper film 40 has a structure in which an adhesive (acrylic resin) is placed on a release paper, and an embossed / printed film layer (vinyl chloride resin) is laminated on the adhesive. The one shown in FIG. 18 is a sample of calcium silicate (commonly known as calcium silicate) wall material in which an iron plate 29 is embedded and wallpaper (wallpaper film) is applied to the surface. Other wallpaper films 40 may also be used. In addition, the wallpaper film 40 may be formed on top of a powder-coated coating film 40 that protects the surface 20 of the structure 100 (article 10).

[0060] 18 shows a configuration example in which a magnet (neodymium magnet) 50 with a hook 51 is attached by magnetic force to the wallpaper film 40 (surface 20) of a structure 100 positioned in a substantially vertical direction, and a hanger with a hook 55 is attached to the hook 51. Even if a towel 59 (or clothing) is hung on this hanger 55, the magnet 50 will not come off the structure 100.

[0061] 18, the structure 100 is disposed in a substantially vertical direction, but the structure 100 may be disposed on the ceiling and the magnet 50 with the hook may be hung from it. By providing the structure 100 and the magnet 50 in such a position, laundry, clothes, etc. can be hung efficiently even in a limited narrow space, which is very convenient.

[0062] In addition, by placing the structure 100 of this embodiment (brick blocks, concrete blocks, tiles, plaster, etc.) on the wall surface of a room, any part of the wall surface can be attached to a magnet, which is very convenient. In addition, the structure 100 shown in FIG. 7 or FIG. 12 has the following advantages by embedding the iron plate (magnetic plate) 29 in the base material 10 (or inserting it from the back) instead of attaching it to the surface of the base material 10. That is, (1) the overall shape and size can be kept unchanged, (2) the surface can be kept flat, (3) the range of thickness can be expanded by the amount of the iron plate (magnetic plate) 29 used, (4) the adhesion of the iron plate (magnetic plate) 29 to the base material 10 can be strengthened, and (5) the size and shape of the iron plate (magnetic plate) 29 do not need to be adjusted to the base material 10, so the size and shape can be freely selected. In particular, when attempting to magnetize a wall relatively strongly inside a house, the advantage of embedding the iron plate (magnetic plate) 29 is great.

[0063] According to another magnetization method (manufacturing method for the magnetic structure 100) of this embodiment, after forming an embedded recess 21 in the surface (upper surface) 22 of an article 10 made of a non-conductive material, a magnetic plate 29 is placed in the embedded recess 21, and a coating film 40 is formed so as to cover the magnetic plate 29. As a result, by attaching a magnet 50 (e.g., a neodymium magnet) to the article 10 (structure 100) to which magnetism has been imparted, a storage hook can be arranged without drilling holes or attaching stickers.

[0064] Furthermore, according to another magnetization method (manufacturing method for the magnetic structure 100) of this embodiment, after forming an embedded recess 21 on the back surface 24 of the article 10 made of a non-conductive material, a magnetic plate 29 is placed in the embedded recess 21, and then an embedded filling portion 26 is formed so as to cover the magnetic plate 29. As a result, by attaching a magnet 50 (e.g., a neodymium magnet) to the article (structure 100) to which magnetism has been imparted, a storage hook can be arranged without drilling holes or attaching stickers.

[0065] Furthermore, in the above-described embodiment, the magnetization method (manufacturing method of a magnetic structure) of the present embodiment is used for building materials (bricks, tiles, concrete blocks, plaster, etc.), but the magnetization method can be used for non-metallic or non-conductive materials (inorganic material materials (ceramics, etc.) The method of this embodiment can also be applied to non-conductive members (non-metallic members) made of inorganic materials (such as concrete, stone, and glass). In the method of this embodiment, when the non-conductive member (non-metallic member) is an inorganic material member, it may be a roof tile, natural stone, or the like. Even if the non-conductive member (non-metallic member) is made of an organic substance, it can be the target member as long as it can withstand heat of about 200°C and is chemically stable, and examples of such members include members made of heat-resistant plastics and FRP (fiber reinforced plastics).

[0066] Although the present invention has been described above with reference to preferred embodiments, such description is not limiting and various modifications are possible. Furthermore, the features of the above-described embodiments can be mutually applied. [Industrial Applicability]

[0067] According to the present invention, a method can be provided for imparting magnetic properties to articles of non-conductive and non-magnetic materials (eg, bricks, tiles, etc.). [Explanation of symbols]

[0068] 10 Article (base material) 12A Brick (brick block) 12B Concrete block 21 Recessed recess 22 Top side 24 Back side (bottom side) 25 Embedded part 26 Buried filling section 29 Magnetic plate (iron plate) 30 Electrostatic Powder Hand Gun 40 Coating film (coating film, wallpaper film) 50 Magnet 51 Hook 100 Magnetic Structure

Claims

1. A method for imparting magnetism to an article made of a non-conductive material, A process of applying iron sand to the surface of an article made of a non-conductive material, The process includes forming a coating film on the surface to which the iron sand has been applied, A method for imparting magnetism, wherein the article made of the non-conductive material is a building component made of gypsum.

2. In the step of forming the aforementioned coating film, A step of applying a conductive primer to the surface to which the iron sand has been applied, A step of applying electrostatic powder coating to the surface to which the conductive primer has been applied. A method for imparting magnetism according to claim 1, wherein the method is carried out.

3. In the step of forming the aforementioned coating film, The method for imparting magnetism according to claim 1, further comprising attaching a wallpaper film to the surface to which the iron sand has been applied.

4. A method for imparting magnetism according to any one of claims 1 to 3, wherein after forming the coating film, a metal fitting equipped with a magnet is attached.

5. A method for imparting magnetism to an article made of a non-conductive material, A process of forming embedded recesses on the surface of an article made of a non-conductive material, The steps include placing a magnetic member in the aforementioned recessed area, The process includes forming a coating film so as to cover the magnetic member, A method for imparting magnetism, wherein the article made of the non-conductive material is a building component made of gypsum.

6. The magnetic member is at least one selected from the group consisting of an iron plate, a nickel plate, a cobalt plate, a ferromagnetic alloy plate, and a permanent magnet plate. In the step of forming the aforementioned coating film, A step of applying a conductive primer to the surface of the article, A step of applying electrostatic powder coating to the surface to which the conductive primer has been applied. The method for imparting magnetism according to claim 5, wherein the method is performed.

7. The magnetic member is at least one selected from the group consisting of an iron plate, a nickel plate, a cobalt plate, a ferromagnetic alloy plate, and a permanent magnet plate. The method for imparting magnetism according to claim 5, wherein the step of forming the coating film involves attaching a wallpaper film to the surface of the article.

8. A method for imparting magnetism to an article made of a non-conductive material, A process of forming an embedded recess on the back surface of an article made of a non-conductive material, The steps include placing a magnetic member in the aforementioned recessed area, The process includes forming an embedded filling portion so as to cover the magnetic member, A method for imparting magnetism, wherein the article made of the non-conductive material is a building component made of gypsum.

9. The magnetic member is at least one selected from the group consisting of an iron plate, a nickel plate, a cobalt plate, a ferromagnetic alloy plate, and a permanent magnet plate. The method for imparting magnetism according to claim 8, further comprising the step of forming a coating film on the surface of an article made of the nonconductive material.

10. In the step of forming the aforementioned coating film, The steps include applying a conductive primer to the aforementioned surface, A step of applying electrostatic powder coating to the surface to which the conductive primer has been applied. A method for imparting magnetism according to claim 9, wherein the method is carried out.

11. In the step of forming the aforementioned coating film, The method for imparting magnetism according to claim 9, further comprising attaching a wallpaper film to the aforementioned surface.

12. A structure made of a non-conductive material, Iron sand applied to the surface of an article made of non-conductive material, The coating film formed on the surface to which the iron sand has been applied and Equipped with, The article of the non-conductive material is a structural component made of gypsum.

13. The article of the non-conductive material is a thin layer of gypsum. The structure according to claim 12, wherein the coating film is at least one of a powder coating film and a wallpaper film.

14. A structure made of a non-conductive material, A recessed area formed on the surface of an article made of a non-conductive material, A magnetic member arranged in the aforementioned recessed recess, A coating film formed to cover the magnetic member and Equipped with, The magnetic member is at least one selected from the group consisting of an iron plate, a nickel plate, a cobalt plate, a ferromagnetic alloy plate, and a permanent magnet plate. The coating film is at least one of a powder coating film and a wallpaper film. The article of the non-conductive material is a structural component made of gypsum.

15. A structure made of a non-conductive material, A recessed area formed on the back surface of an article made of non-conductive material, A magnetic member arranged in the aforementioned recessed recess, A buried filling portion formed to cover the magnetic member and Equipped with, The magnetic member is at least one selected from the group consisting of an iron plate, a nickel plate, a cobalt plate, a ferromagnetic alloy plate, and a permanent magnet plate. The article of the non-conductive material is a structural component made of gypsum.

16. A coating film is formed on the surface of the article made of the non-conductive material. The structure according to claim 15, wherein the coating film is at least one of a powder coating film and a wallpaper film.

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