JPWO2018168770A1 - Interior building materials - Google Patents

Abstract

For interior building materials without magnets, such as gypsum board, the surface of such interior building materials is modified to have a magnet (magnet) by simple means that can be put to practical use, thereby replacing thumbtack. The purpose of the present invention is to provide a technology capable of forming a wall surface or the like on which a magnetic stopper or a magnet sheet can be used, and which can be used as an interior building material that realizes good workability that can be easily cut with a cutter knife or the like. A plurality of plate-shaped magnetic materials are arranged on at least a part of the front surface or the back surface of the plate-shaped base material without a magnet, so that adjacent magnetic materials have portions in contact with each other. This is achieved by providing an interior building material, which is fixed or adjacent magnetic materials are arranged and fixed via a gap having a narrow portion.

Description

  The present invention relates to an improvement of an interior building material made of a plate-like base material that does not originally have a magnet, such as a gypsum board, and more specifically, a function of attaching a magnet (magnet), which is a magnetic material, to the surface. TECHNICAL FIELD The present invention relates to an interior building material used for forming an interior wall or the like, which realizes good workability that can be easily cut by a cutter knife or the like in addition to the property imparted.

  Gypsum board (also called plasterboard) is a building material that is made of a gypsum-based material in the form of a plate and wrapped with special paperboard. It is extremely durable, has excellent fire resistance, and has high heat insulation and sound insulation. It is widely used as an interior building material when building walls and ceilings. Gypsum board has become widely used as an interior building material, in addition to the above-mentioned excellent functionality, it is a construction material made of inorganic material, but it can be easily cut with a simple tool such as a cutter knife. It depends on what is excellent.

  However, in order to decorate, for example, a painting or a photograph in a good condition on a wall made of gypsum board, it is necessary to use a special anchor developed for gypsum board. In addition, if a normal screw, nail, thumbtack, or special anchor for gypsum board used forcibly on a wall made of gypsum board is pulled out without necessity, a hole will remain in the wall. There's a problem. The problem that a hole remains in a wall after a screw, a nail, a thumbtack, or the like is pulled out is not limited to a gypsum board, but the same applies to other interior building materials.

  On the other hand, a magnet-type stopper for a pushpin which does not need to make a hole in the wall has been developed and widely used for a wall made of steel or the like. In addition, there are also known magnet sheets that can be easily attached to steel walls, etc., with images and characters on the surface, and magnet sheets that can also be used as white boards, and can be freely attached and removed. It is widely used because it does not leave any marks on the wall.

  However, the product of the method of mounting on a wall by these magnets (magnets) is limited in the material of the wall, and cannot be used, for example, on a wall made of plasterboard, which is widely used. In order to use the magnet sheet, it is necessary to install a dedicated sheet for attaching the magnet sheet on the wall surface. In addition to being complicated, another problem that the design property of the wall surface is impaired arises.

  To solve the above problem, there is a proposal for a wall member in which a magnetic thin plate such as a steel thin plate is adhered to a surface of a support member such as a gypsum board, and wallpaper is superimposed on the surface of the magnetic thin plate (see Patent Document 1). ). Also, in recent years, a building material, which is a composite material formed by laminating a metal plate and a material such as a gypsum board, which has been developed for the purpose of preventing malfunction of electronic devices, is sometimes attached to a surface with a magnet. There is also a possibility (see Patent Document 2).

JP 2014-152596 A JP 2008-87404 A

  However, according to the study of the present inventors, the wall member described in Patent Literature 1 covers almost the entire surface of a support member such as a gypsum board, or even a part of the support member over a large area. Since the magnetic thin plate is stuck, the workability of the support member becomes extremely poor. In addition, a specific wall member described in Patent Literature 1 has a magnetic thin plate such as a steel thin plate adhered to a surface of a commercially available gypsum board covered with paper with a double-sided tape or an adhesive. It is intended to form a portion in which a magnet is attached to a wall surface by a construction in which a wallpaper is superimposed on the wall, and the construction is extremely complicated, and is not a configuration that can withstand general use.

  In addition, since the above-mentioned building materials developed for the purpose of preventing malfunction of electronic devices are intended to impart electromagnetic wave shielding properties, most of the metal plates that can be used are magnets. It is a kind that does not stick. Furthermore, the structure of the building material is not configured such that many materials are laminated on a metal plate and a magnet is attached to the surface of the building material.

  On the other hand, a paint containing a magnetic material such as iron powder has been commercialized, and it is also possible to apply a coating film on the surface of an interior building material such as a gypsum board so as to attach a magnet. However, in this case, since thick coating is performed on site, it is difficult to apply evenly, and it requires various skills to perform the application, the site is soiled, and high incombustibility of the gypsum board cannot be ensured. However, like the technology described in Patent Document 1, it cannot be used for general purposes.

  On the other hand, it is conceivable to apply a coating material containing a magnetic material to an interior building material such as a gypsum board in advance to form a coating layer containing the magnetic material. However, in this case, there is a practical problem that equipment and technology for uniformly applying the paint on the surface of the interior building material, drying equipment and technology are required, and the scale becomes large.

  Therefore, an object of the present invention is to provide an interior building material without a magnet, such as a gypsum board, in such a way that a magnet (magnet) can be attached to the surface of such an interior building material by simple means that can be put to practical use. It can be modified, and this makes it possible to form a wall with a stopper with a magnet for a thumbtack or a magnet sheet that can be used as a thumbtack, and also has good workability that can be easily cut with a cutter knife etc. To provide building materials.

  The above object is achieved by the present invention described below. That is, the present invention is such that a plurality of plate-shaped magnetic materials have a portion where adjacent magnetic materials abut each other on at least a part of the front surface or the back surface of the plate-shaped base material without a magnet. Or an adjacent magnetic material is disposed and fixed via a gap having a narrow portion, thereby providing an interior building material.

  Preferred embodiments of the interior building material of the present invention include the following. The adjacent magnetic materials are arranged in contact with each other, and the plurality of plate-shaped magnetic materials are fixed in a state where they are arranged without a gap; the narrow portion of the gap is 0.05 to 5.0 mm. The narrow portion of the gap is in the range of 0.10 to 1.0 mm; the plurality of plate-shaped magnetic materials have the same shape, and the shape is Square, rectangle, trapezoid, triangle, circle, and ellipse; any shape selected from the group consisting of; four sides of the square, two sides of the rectangle, at least one side of the trapezoid or the triangle, or The diameter of the circle, or at least one of the major axis or minor axis of the ellipse, is 10 cm to 35 cm; the gap is composed only of the narrow portion, and the narrow portion is linear; The plural pieces At least one of the plate-shaped magnetic materials is a plate-shaped magnetic material having a through hole; at least one of the plurality of plate-shaped magnetic materials has a chamfered portion on the outer periphery thereof. The portion where the plate-shaped magnetic material is arranged is set upright so that the interior building material is vertical, the diameter of the magnet portion is 17 mmφ, and the attracting force to the 1 mm thick iron plate is 3.5N. A single disc-shaped magnet having an adsorbing force that does not cause the plain paper to drop when one piece of A4 plain paper is held at a portion where the plate-shaped magnetic material is disposed; The base material is a gypsum plate-shaped member, and the plurality of plate-shaped magnetic materials are arranged, and a sheet of paper is further stuck thereon; The thickness of the magnetic material in the shape of 0.1 to 1.0 mm That the thickness of the plate-shaped magnetic material is 0.2 to 0.8 mm; one of the plurality of plate-shaped magnetic materials is subjected to rustproofing on both surfaces or one surface thereof It is either an iron plate or a steel plate; its thickness is 9.5 to 10.0 mm; and its thickness is 12.5 to 13.0 mm.

  ADVANTAGE OF THE INVENTION According to this invention, although it is a simple structure, the interior building material which does not have a magnet on the surface represented by a gypsum board, a magnet (magnet) is attached to the surface by the simple means which can be put into practical use. The present invention provides a highly convenient interior building material that has been modified. According to the present invention, with the above-described configuration, plain paper or the like is applied to the surface of a building material for interior by using a magnet-attached fastener or a magnet sheet for a thumbtack instead of being used in various fields in a wide variety of fields. In this case, a highly convenient interior building material exhibiting a sufficient magnet attracting force to be able to be held, and a highly convenient wall surface using the same are provided. The greatest advantage of the present invention is that, according to the present invention, it is possible to easily insert a cutter knife between adjacent plate-shaped magnetic materials, even though the building material for interior is highly convenient as described above. An object of the present invention is to provide a building material for interior which can be easily cut into a size and realizes good workability.

It is a schematic diagram which shows the building material for interior of Example 2 of this invention. It is a schematic diagram which shows the building material for interior of Example 1 of this invention. It is a schematic diagram which shows another example of the interior building material of this invention. It is a schematic diagram which shows another example of the interior building material of this invention. It is a schematic diagram which shows another example of the interior building material of this invention. It is a schematic diagram which shows another example of the interior building material of this invention. It is a schematic diagram which shows another example of the interior building material of this invention. It is a schematic diagram which shows another example of the interior building material of this invention. It is a schematic diagram which shows another example of the interior building material of this invention. It is a schematic diagram which shows another example of the interior building material of this invention. It is a schematic diagram which shows another example of the interior building material of this invention. It is a schematic diagram which shows another example of the interior building material of this invention. It is the model explaining the method of measuring the attraction force with respect to the 1-mm iron plate of the magnet used when evaluating the attraction force with respect to the magnet of the interior building material of this invention.

  Hereinafter, the present invention will be described in detail with reference to preferred embodiments. The present invention is not limited to the following embodiments, and various modifications and substitutions of the following embodiments can be added without departing from the scope of the present invention.

  The present inventors have conducted intensive studies to solve the above-mentioned problems of the prior art, and as a result, modified a plate-like base material without a magnet such as a gypsum board so that a magnet is attached to the surface thereof. All of the conventional methods have deteriorated the workability and design of the base material and lacked industrial applicability, and have recognized that this point is the greatest technical problem in the prior art. Under such recognition, as a result of examination, a case where a plurality of plate-shaped magnetic materials are arranged and fixed on at least a part of the front surface or the back surface of the base material so that a magnet is attached to the surface Then, adjacent magnetic materials are brought into contact with each other, and a plurality of plate-shaped magnetic materials are fixed in a state where they are arranged without gaps, or a plurality of adjacent plate-shaped magnetic materials are at least narrowed. The present inventors have found out that, by arranging and fixing through a gap having a portion, it is possible to achieve a highly convenient and excellent workability that solves the problems of the conventional technology, and reached the present invention.

  That is, the building material for interior of the present invention is a case in which a plurality of plate-shaped magnetic materials are fixed in a state where they are arranged side by side without gaps, or are fixed side by side through a gap having a narrow portion to provide a gap. Of course, even when the plate-shaped magnetic materials are arranged without gaps, the adjacent plate-shaped magnetic materials are separated from each other, so the cutter knife is placed between the plate-shaped magnetic materials. It has been found that the blade can be easily inserted, and thereby, the same workability as before reforming can be secured.

  According to the study of the present inventors, for example, a plurality of zinc-plated steel sheets, which are plate-shaped magnetic materials, are indicated on a gypsum board, which is a plate-shaped base material indicated by 1, in FIG. Surprisingly, even when the interior building material 10 is fixed in a state where it is arranged side by side, the interior building material 10 is slightly bent so that the side on which the plurality of zinc steel plates are fixed is convex. Without this, it has been found that the blade of the cutter knife can be easily inserted between the adjacent magnetic materials, and as a result, the interior building material having the above configuration can be easily cut with the cutter knife. As shown in FIG. 2, when the interior building material 10 is configured such that adjacent plate-shaped magnetic materials 2 are fixed side by side via a gap having a narrow portion indicated by 3, In addition, a blade of a cutter knife or a blade of a container having a thickness greater than that of the cutter knife can be easily inserted, and the base material can be easily cut with the blade. In the embodiment shown in FIG. 2, a gap having a narrow portion 3 formed by arranging a plurality of plate-shaped magnetic materials 2 on a substrate 1 can be cut freely in the interior building material of the present invention. It is preferable to design the shape and arrangement of the plurality of plate-shaped magnetic materials 2 while recognizing that the portions are to be located. This makes it possible to provide an interior building material having more excellent workability.

  The gap having the narrow portion 3 in the interior building material of the present invention may be appropriately designed as necessary in consideration of the workability of the interior building material described above. That is, the size of the gap may be, for example, as long as the width of the narrow portion 3 is such that the blade of the knife, such as a cutter knife, can be easily inserted without performing the operation of bending the interior building material as described above. . The specific size of the narrow portion 3 in the case where the gap is provided may be such that the shortest distance (narrow portion 3) between adjacent magnetic materials is within a range of 0.05 to 5.0 mm. Further, the width may be as narrow as about 0.10 to 1.0 mm. Further, the position where the gap is provided may be arbitrarily determined in consideration of the convenience when cutting and using the interior building material.

  Here, the interior building material is often 3 × 6 which is the standard size of panel plywood. For this reason, in the present invention, when a plurality of plate-shaped magnetic materials are arranged in any one of the above-described configurations, the magnetic materials are easy to construct and can be cut at desired predetermined intervals. It is preferable to adopt a configuration arranged at When cut at a contact portion between adjacent magnetic materials, or at a gap formed by adjacent magnetic materials, the width is, for example, in a range of 10 cm to 35 cm, more specifically, 10 cm, or , 15 cm, or 30 cm, the gaps are preferably arranged at predetermined intervals.

  Conventional interior building materials using a metal plate all use a large-area metal plate, which has been a cause of poor workability. On the other hand, in the present invention, for example, a gypsum board as an interior building material of 3 × 6 is used as the base material 1 and, on its surface, as shown in FIG. 1 or FIG. The interior building material 10 is a form in which the plate-shaped magnetic materials 3 are fixedly arranged and fixed to each other through abutment or a small gap. With this configuration, it is possible to solve the problem that the workability caused by using the above-described large-area metal plate is deteriorated, and the remarkable effect of the present invention can be obtained. FIG. 1 and FIG. 2 are schematic diagrams, in which the contact portions and gaps are emphasized. The other figures are the same.

  With the configuration described above, the interior building material 10 of the present invention shown in FIG. 1 or FIG. 2 can easily insert the blade of a cutter knife between the adjacent plate-shaped magnetic materials 2. The configuration is such that it can be cut by a cutter knife or the like and is divided into approximately 30 cm. As a result, the building material for interior of the present invention can easily insert the blade of the cutter knife and use the breakable part (abutting part or gap) to cut the magnetic material without using a safety ruler or the like. The material serves as a guide, and the gypsum board as the base material 1 can be easily cut to a width (length) of, for example, 30 cm, 60 cm, 90 cm, or the like using a general-purpose cutter knife or the like. As described above, the interior building material product of the present invention can be used up without waste, so that it is excellent in effective utilization of resources and excellent in economic efficiency. Without being limited to the above, for example, if a square plate-like magnetic material of about 10 cm square or about 15 cm square is used, the building material for interior of the present invention is 10 cm, 15 cm, 20 cm, 40 cm, 45 cm, 50 cm, It is a useful product that can be easily cut into widths (lengths) such as 60 cm, 70 cm, 75 cm, and 80 cm.

  The shape of the plurality of plate-like magnetic materials 2 constituting the interior building material 10 of the present invention is not limited to the squares shown in FIGS. 1 and 2, but may be, for example, a rectangle (see FIGS. 3 and 4), a trapezoid (not shown). , A circle (see FIG. 5), an ellipse (not shown), a triangle (see FIGS. 6 and 7), and the like. In the illustrated example, the shapes of the plurality of plate-shaped magnetic materials are the same, but the present invention is not limited to this, and may be a combination of the above-described figures. For example, in the interior work, considering that it may be necessary to provide a through hole in the interior building material, the base material is largely exposed in a region surrounded by a plurality of adjacent plate-shaped magnetic materials. It is preferable to appropriately select and use the shape and arrangement of the magnetic material so that the portion exists.

  In the example of the interior building material 10 of the present invention shown in FIGS. 1 to 10, a plurality of plate-shaped magnetic materials 2 are arranged over the entire surface of the base material 1. It is preferable that the magnetic material 2 is disposed on 90% or more, more preferably 95%, of the area of the front surface or the back surface of the substrate 1. However, it is not always necessary to arrange in this way. For example, as shown in FIGS. 11 and 12, it is sufficient if the magnet is attached to the surface of the interior building material, and the magnet is arranged in a range where convenience is considered to be improved. Further, in consideration of the workability, as shown in FIGS. 8 to 10, a plurality of plate-shaped magnetic materials 2 are arranged only in a portion that is likely to be used by cutting the building material as the base material 1. It is also a preferred embodiment of the present invention that a large-area plate-shaped magnetic material 2 is disposed in a portion where there is no possibility of being cut and used.

  What is important in the present invention is that, in a state where a plurality of plate-shaped magnetic materials are arranged, rather than a range in which a plurality of plate-shaped magnetic materials are arranged, if necessary at the time of construction, adjacent magnetic materials The configuration is such that a blade such as a cutter knife can be easily inserted therebetween, and the base material can be cut along the outer edge of the plate-shaped magnetic material (that is, the plate-shaped magnetic material is not cut). In other words, as a result of such a configuration, it is possible to easily and without waste, and to freely build building materials for interiors as required, so that when the interior wall is formed, the surface of the formed wall is attached by a magnet. At the same time, it is possible to provide a product that is highly convenient, workable, and economical, without compromising workability and reducing the amount of scrap material generated, Become.

  As a more preferable embodiment of the interior building material having a configuration in which a blade such as a cutter knife can be easily inserted between adjacent magnetic materials, at least one of a plurality of plate-shaped magnetic materials 2 is provided. In addition, it is possible to use a material whose entire outer edge (outer periphery) is provided with a chamfered portion as necessary. According to such a configuration, in particular, as shown in FIG. 1, adjacent magnetic materials are arranged in contact with each other on the base material 1, and a plurality of plate-shaped magnetic materials 2 are arranged without gaps. Even in the case of an interior building material fixed in a state, a blade such as a cutter knife can be more easily inserted between adjacent plate-shaped magnetic materials. In addition, if the outer edge (outer periphery) of the magnetic material 2 is provided with a chamfered portion, even if a sheet-like material such as wallpaper is pasted on the surface of the interior building material of the present invention, it is adjacent to the surface. Blades such as cutter knives can be easily inserted between matching plate-shaped magnetic materials, which facilitates cutting.

  The method of fixing the plurality of plate-shaped magnetic materials constituting the interior building material of the present invention on a substrate may be any conventionally known method. For example, the magnetic material may be attached to the substrate with an adhesive, or may be fixed to the substrate with a double-sided tape. The adhesive is not particularly limited. For example, an organic adhesive such as a vinyl acetate adhesive or an epoxy adhesive, or an inorganic adhesive such as an alkali metal silicate adhesive may be used.

  Examples of the plate-shaped magnetic material constituting the interior building material of the present invention include an iron plate or a steel plate. The steel sheet may be a surface-treated steel sheet subjected to a surface treatment. The surface treatment of the surface-treated steel sheet may be any as long as the interior building material of the present invention is configured so that a magnet is attached to the surface of the interior building material. For example, a steel sheet plated with a single metal such as a galvanized steel sheet (zinc steel sheet) (single metal plated steel sheet) or an alloy such as a hot-dip 55% aluminum-zinc alloy plated steel sheet (galvalume steel sheet (registered trademark)) Plated steel plates (alloy-plated steel plates) and the like can be mentioned. In the embodiment described later, a case where a zinc steel plate is arranged is shown as a representative example, but it is needless to say that the present invention is not limited to this.

  The plate-shaped magnetic material used in the present invention may have one or a plurality of through holes (not shown). According to this structure, a nail or a screw can be driven into the through-hole at the time of construction of the interior building material of the present invention or after the construction, so that the workability and convenience of the interior building material of the present invention can be improved. The design can be further improved. More specifically, for example, when fastening the interior building material of the present invention in which a plate-shaped magnetic material is fixedly provided on a base material surface, a through-hole is provided in the plate-shaped magnetic material. By using this through hole, it can be easily fastened with a screw or the like using a general-purpose electric tool, and the surface state after fastening with a screw or the like is flat and good become. On the other hand, when the through hole is not provided in the plate-shaped magnetic material, depending on the thickness of the magnetic material, a general-purpose electric tool may be used to fasten the interior building material of the present invention with screws or the like. In this case, the surface of the magnetic material swells to a considerable extent (projects to the surface side), so that when the surface is finished with wallpaper or the like, there is a problem in appearance and the design may be impaired. From these points, it is preferable that the plate-shaped magnetic material used in the present invention is provided with one or a plurality of through holes in advance.

  Therefore, it is preferable that the size of the through hole is such that the screw head or the nail head can be accommodated, for example, a size of about 10 to 20 mmφ. The position of the through-hole and the number of the through-hole are not particularly limited, and the improvement of the workability, the improvement of the convenience, and the improvement of the design obtained by providing the through-hole in the interior building material of the present invention. What is necessary is just to determine it suitably in consideration. Further, by processing the through-hole using a putty material containing a magnetic material and a resin, the through-hole in which the screw head or the nail head is accommodated can be smoothly processed.

  Further, as a preferred embodiment of the interior building material of the present invention, a structure in which a sheet such as paper is further attached to the surface side of a plurality of plate-shaped magnetic materials such as an iron plate arranged on one surface of a base material. Is mentioned. With such a configuration, it is possible to apply the coating without performing the primer treatment, and to apply the wallpaper with a normal wallpaper paste. The material of the sheet used above is not limited to paper, but may be any material. As a suitable material, for example, a material that easily adheres to the paste for wallpaper or a material that provides a surface characteristic that can be directly applied with a paint can be used.

  The thickness of a plate-like magnetic material such as an iron plate is determined, for example, by using a commercially-available stopper with a magnet (so-called magnet) for a thumbtack, as long as an attraction force capable of holding at least one A4 printing sheet can be obtained. Well, there is no particular limitation. According to the study of the present inventors, specifically, it is preferably at least 0.1 mm, more preferably at least 0.2 mm. The thickness of the plate-like magnetic material such as an iron plate constituting the interior building material of the present invention may be thick, but even if the thickness exceeds 1 mm, the obtained attraction force is not so large, When the material is used, it depends on the range in which the plate-shaped magnetic material is arranged. However, since the interior building material becomes heavy, there is a concern that the workability and workability may be deteriorated. On the other hand, if the thickness is too large, the material cost is unnecessarily used, which is uneconomical. If the desired attraction force is such that one A4 sheet is fixed with one magnet, it is sufficient to use a plate-like magnetic material having a thickness of about 0.5 mm. According to the study of the present inventors, using a commercially available magnet-attached fastener with a strong attraction force, when considering the installation of a heavy small shelf or the like, about 0.8 mm It is preferable that there be a thickness.

  The interior building material of the present invention can exhibit at least an adsorbing force enough to fix A4 paper with one magnet, as described above, in consideration of various situations that occur when the inner wall surface is formed. Is preferred. More specifically, the portion where the plate-shaped magnetic material constituting the interior building material of the present invention is arranged, the interior building material stands upright, the magnet portion has a diameter of 17 mmφ, and When one sheet of A4 plain paper is held at a portion where the plate-shaped magnetic material is disposed by one disk-shaped magnet having an attracting force of 3.5 N for an iron plate having a thickness of 1 mm, It is desired to have a suction force that does not fall. It was measured as shown in FIG. 13 that the disc-shaped magnet having a diameter of 17 mm used in the above test had an attracting force of 3.5 N to an iron plate having a thickness of 1 mm. That is, using an autograph (not shown), a magnet 5 with a hook having a diameter of 17 mm was placed on an iron plate 3 having a thickness of 1 mm, the hook was lifted up under the conditions of a test speed of 3 mm / sec, and the maximum strength was read. It is.

  Here, a gypsum board is mentioned as the most common wall material (base material) for interior. Among them, a gypsum board having a thickness of 9.5 to 10.0 mm or 12.5 to 13.0 mm is most frequently used as a wall material for interior. Therefore, the thickness of the interior building material of the present invention, in which a plurality of plate-like magnetic materials such as iron plates are fixed side by side with a specific gap therebetween, is 9.5 to 10.0 mm or 12.5 to 13 mm. A thickness of 0.0 mm is preferable because it can be finished without unevenness with surrounding walls.

  Therefore, it is preferable to use a gypsum board as a base material constituting the interior building material of the present invention. The gypsum board is not limited to a general-purpose board, but includes a waterproof board with improved waterproofness, a reinforced gypsum board with further enhanced fire resistance, and the like. In addition, examples of the base material constituting the interior building material include a board made of rock wool and a board using glass fiber. According to the study of the present inventors, on one surface of a gypsum board, a plurality of plate-shaped magnetic materials are arranged in a state where adjacent magnetic materials are in contact with no gap, or Regardless of the interior building material of the present invention in any form in which the matching magnetic materials are arranged via a gap, easily insert a blade such as a cutter knife between the adjacent plate-like magnetic materials, By cutting the base paper on the surface of the gypsum board under the magnetic material, the gypsum board as the base material can be easily cut. Therefore, by using an existing gypsum board as a base material, it is possible to realize a highly highly convenient product without impairing the high workability of the gypsum board.

  Next, the present invention will be described more specifically with reference to examples. However, the invention is not limited to these examples.

[Example 1]
In the interior building material of this example, a gypsum plate member (gypsum board) having a thickness of 12.5 mm, a length of 1,820 mm, and a width of 901 mm was used as a base material. In addition, as plate-like magnetic materials, eighteen 30 cm square zinc steel plates each having a thickness of 0.5 mm were prepared. Then, as shown in FIG. 2, 18 zinc steel plates 2 were formed on the surface of the gypsum board as the base material 1 by a predetermined distance between adjacent zinc steel plates of 3 × 6. They were arranged in an orderly manner. Specifically, the three horizontal members are arranged via a gap composed of linear narrow portions 3 each having a width of 0.5 mm, and the six vertical members each include linear narrow portions 3 each having a width of 0.4 mm. A zinc steel sheet was arranged over the entire surface of the base material with a gap therebetween to obtain a building material for interior of the present example. A vinyl acetate adhesive was used as a means for fixing the zinc steel sheet. In FIG. 2, the gap is exaggerated from the actual size for easy understanding.

  Observation by visual and tactile observation of the obtained plate-like interior building material 10 shows that the surface on the side where the zinc steel sheets are arranged side by side has a very narrow gap between adjacent zinc steel sheets, so that the conventional gypsum board and The appearance gave the same impression, and the touch by hand was flat as well as the conventional one, including the surface on the side where the zinc steel sheet was disposed.

Further, the attraction force of the magnet on the side on which the zinc steel sheets were arranged side by side was confirmed by the following method. That is, a building material for interior is set up vertically, and one magnet having a magnet part having a diameter of 17 mmφ and an adsorbing force of 3.5 N for an iron plate having a thickness of 1 mm is provided on a surface on the zinc steel sheet side. A4 paper having a thickness of 0.09 mm and a weight of 64 g / m ² was held. As a result, five sheets could be held without falling.

  A blade of a cutter knife is easily inserted into a gap portion formed of a linear narrow portion 3 having a width of 0.5 mm or 0.4 mm formed between adjacent zinc steel plates of the interior building material obtained above. Thus, it was confirmed that the interior building material could be easily cut. As a result, the cut piece could be easily cut into members having a width (length) of 30 cm or a length (length) of 60 cm without using a measure.

[Example 2]
In the interior building material of this example, a 12.5 mm thick, 1800 mm long, 900 mm wide gypsum plate-like member (gypsum board) was used as the base material 1. Then, 18 zinc steel sheets of 30 cm square similar to those used in Example 1 were used, and adjacent zinc steel sheets were arranged in contact with each other, and as shown in FIG. Except that the material was fixed in a state of being arranged horizontally on the surface of the base material 3 in a horizontal direction and a vertical direction in a state of 3 sheets × 6 sheets in the same manner as in Example 1, Building materials were obtained. As a result, as in Example 1, the appearance gives the same impression as the conventional gypsum board, and the feeling touched by hand is the same as the conventional one including the surface on the side where the galvanized iron plate is arranged. A flat building material was obtained. Then, as with the case of the first embodiment, five magnets of A4 paper could be held by the magnet on the surface on the side where the zinc iron plates were arranged side by side.

  The interior building material obtained above can be easily inserted with the blade of a cutter knife in the part where the adjacent zinc steel sheet and the zinc steel sheet are in contact by bending the zinc steel sheet convexly to the side where the zinc steel sheets are arranged. As a result, the gypsum plate-shaped member as the base material could be easily cut. Further, the cut piece was easily formed into a member having a width (length) of 30 cm or 60 cm (length) without using a measure.

[Example 3]
In the interior building material of this example, as the base material 1, a gypsum plate-like member having a thickness of 12.5 mm, a length of 1,820 mm, and a width of 910 mm, which satisfies the size of a gypsum board defined by JIS standards, was used. . In addition, as plate-like magnetic materials, 18 zinc steel plates having a thickness of 0.5 mm and a square of 30.3 cm square were prepared. Then, as shown in FIG. 2, 18 zinc steel sheets were arranged such that adjacent zinc steel sheets were arranged in a three-by-six by six-by-six order with predetermined gaps therebetween. Specifically, the three horizontal members are arranged via a gap composed of linear narrow portions 3 each having a width of 0.5 mm, and the six vertical members each include linear narrow portions 3 each having a width of 0.4 mm. A zinc steel plate was placed over the entire surface of the base material 1 with a gap therebetween to obtain a building material for interior of the present example.

  As for the plate-like interior building material obtained above, the surface on the side where the zinc steel sheets were arranged side by side was observed, as in the case of the building material of Example 1, the gap between the adjacent zinc steel sheets was observed. Since it was extremely narrow, it had an appearance giving the same impression as a conventional gypsum board, and the feeling touched by hand was flat, including the surface on the side where the zinc steel plate was arranged, as in the conventional gypsum board. Then, when the attracting force of the surface on the side where the zinc iron plates are arranged side by side was confirmed using the magnet having the above-mentioned specific attracting force, five A4 sheets were magnetized in the same manner as in the first embodiment. Was able to hold.

  A blade of a cutter knife is easily inserted into a gap portion formed of a linear narrow portion 3 having a width of 0.5 mm or 0.4 mm formed between adjacent zinc steel plates of the interior building material obtained above. Thus, it was confirmed that the interior building material could be easily cut. As a result, the cut piece could be easily cut into a member having a width (length) of about 30 cm or a length (length) of about 60 cm without using a measure.

1: Base material 2: Plate-shaped magnetic material 3: Narrow gap 4: Iron plate 5: Magnet with hooks having an adsorbing power of 3.5N 10: Interior building material

Claims (16)

  On at least a part of the front or back surface of the plate-shaped base material without a magnet, a plurality of plate-shaped magnetic materials are arranged and fixed so that adjacent magnetic materials have portions in contact with each other. Or an adjacent building material, wherein adjacent magnetic materials are arranged and fixed via a gap having a narrow portion.   The interior building material according to claim 1, wherein the adjacent magnetic materials are arranged in contact with each other, and the plurality of plate-shaped magnetic materials are fixed in a state where they are arranged without gaps.   The interior building material according to claim 1, wherein the narrow portion of the gap is in a range of 0.05 to 5.0 mm.   The interior building material according to claim 1, wherein the narrow portion of the gap is in a range of 0.10 to 1.0 mm.   2. The plurality of plate-shaped magnetic materials have the same shape, and the shape is any shape selected from the group consisting of a square, a rectangle, a trapezoid, a triangle, a circle, and an ellipse. The building material for interior according to any one of claims 4 to 4.   The four sides of the square, the two sides of the rectangle, at least one side of the trapezoid or the triangle, or the diameter of the circle, or at least one of the major axis or the minor axis of the ellipse is 10 cm to 35 cm. 6. The interior building material according to 5.   The interior building material according to any one of claims 1, 3, and 4, wherein the gap comprises only the narrow portion, and the narrow portion is linear.   The interior building material according to any one of claims 1 to 7, wherein at least one of the plurality of plate-shaped magnetic materials is a plate-shaped magnetic material having a through hole.   The interior building material according to any one of claims 1 to 8, wherein at least one of the plurality of plate-shaped magnetic materials has a chamfered portion on an outer periphery thereof.   The portion where the plate-shaped magnetic material is arranged is set upright so that the building material for interior is vertical, the diameter of the magnet portion is 17 mmφ, and the attraction force to the 1 mm thick iron plate is 3.5N. 2. A disc-shaped magnet having an adsorbing force such that the plain paper does not drop when one piece of A4 plain paper is held at a portion where the plate-shaped magnetic material is disposed. The building material for interior according to any one of claims 9 to 9.   The base material is a gypsum plate-like member, and has a structure in which a paper sheet is further pasted on the plurality of plate-like magnetic materials arranged thereon. The interior building material according to any one of items 10 to 10.   The interior building material according to any one of claims 1 to 11, wherein the plate-shaped magnetic material has a thickness of 0.1 to 1.0 mm.   The interior building material according to any one of claims 1 to 11, wherein the thickness of the plate-shaped magnetic material is 0.2 to 0.8 mm.   The interior for use according to any one of claims 1 to 13, wherein any of the plurality of plate-shaped magnetic materials is any one of an iron plate or a steel plate having both surfaces or one surface subjected to rustproofing. Building materials.   The interior building material according to any one of claims 1 to 14, having a thickness of 9.5 to 10.0 mm.   The interior building material according to any one of claims 1 to 14, wherein the thickness is 12.5 to 13.0 mm.

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