JP6901164B2 - Interior building materials - Google Patents

Description

The present invention relates to an improvement of an interior building material such as gypsum board, which is originally composed of a plate-shaped base material to which a magnet is not attached. Specifically, a function capable of attaching a magnet, which is a magnetic material, to the surface thereof. The present invention relates to an interior building material used for forming an interior wall or the like, which has realized good workability that can be easily cut with a cutter knife or the like in addition to being imparted with properties.

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

However, in order to decorate the wall surface made of gypsum board, for example, paintings and photographs in good condition, it is necessary to use a special anchor developed for gypsum board. Also, if you pull out the usual screws, nails, thumbtacks, or special anchors for gypsum board that you used forcibly on the wall made of gypsum board, holes will remain in the wall. There's a problem. The problem that holes remain in the wall after pulling out screws, nails, thumbtacks, etc. is not limited to gypsum board, but is the same for other building materials for interiors.

On the other hand, a stopper with a magnet as a thumbtack substitute that does not require a hole in the wall has been developed and is widely used for walls made of steel or the like. Also known are magnet sheets with images and characters on the surface that can be easily attached to walls made of steel, etc., and magnet sheets that can also be used as whiteboards, and can be freely attached and detached. , It is widely used because it leaves no trace of removal on the wall.

However, the wall-mounted products using these magnets are limited in the material of the wall, and cannot be used for, for example, a general-purpose gypsum board wall surface. In order to use it, it is necessary to install a dedicated sheet for attaching the magnet sheet on the wall surface, which causes another problem that the design of the wall surface is impaired in addition to being complicated.

In response to the above problems, there is a proposal for a wall member in which a magnetic thin plate such as a steel thin plate is attached to the surface of a support member such as gypsum board, and wallpaper is superimposed on the surface of the magnetic thin plate (see Patent Document 1). ). Further, in recent years, a material such as gypsum board, which has been developed for the purpose of preventing malfunction of electronic devices, and a building material in which a metal plate is laminated and composited are known, and in some cases, a magnet is attached to the surface. There is also a possibility (see Patent Document 2).

Japanese Unexamined Patent Publication No. 2014-152596 Japanese Unexamined Patent Publication No. 2008-8740

However, according to the study by the present inventors, the wall member described in Patent Document 1 is like a steel thin plate over almost the entire surface or even a part of the support member such as gypsum board over a large area. Since the magnetic thin plate is attached, the workability of the support member is significantly inferior. Further, as the specific wall member described in Patent Document 1, a magnetic thin plate such as a steel thin plate is attached to the surface of a commercially available gypsum board whose both sides are covered with paper with double-sided tape or an adhesive. It is designed to form a part where a magnet is attached to the wall surface by the construction, which is a structure in which a wallpaper is superimposed on the wearing, and the construction is extremely complicated, and it is not a structure that can withstand general purpose.

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

On the other hand, paints containing a magnetic material such as iron powder have been commercialized, and by providing a coating film on the surface of an interior building material such as gypsum board, it is possible to construct the paint so that a magnet is attached. However, in this case, since the thick coating is applied on site, it is difficult to apply evenly, skill is required for the application, the site becomes dirty, and the high nonflammability of gypsum board cannot be ensured. As with the technique described in Patent Document 1, it cannot be used for general purposes.

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

Therefore, an object of the present invention is to attach a magnet to the surface of such an interior building material by a simple means that can be put into practical use in an interior building material such as gypsum board that does not have a magnet. It can be modified, which makes it possible to form a stopper with a magnet as a substitute for a picture stud, a wall surface on which a magnet sheet can be used, etc., and for interior use that realizes good workability that can be easily cut with a cutter knife or the like. It is to provide building materials.

The above object is achieved by the following invention. That is, in the present invention, a plurality of plate-shaped magnetic materials have a portion in which adjacent magnetic materials are in contact with each other on at least a part of the front surface or the back surface of the plate-shaped base material to which a magnet is not attached. Provided are interior building materials characterized in that they are arranged and fixed to each other, or adjacent magnetic materials are arranged and fixed through a gap having a narrow portion.

Preferred forms of the interior building material of the present invention include the following. The adjacent magnetic materials are arranged so as to be in contact with each other, and the plurality of plate-shaped magnetic materials are fixed in a state of being lined up without a gap; the narrow portion of the gap is 0.05 to 5.0 mm. The narrow portion of the gap is within the range of 0.10 to 1.0 mm; the plurality of plate-shaped magnetic materials have the same shape, and the shape is the same. Must be of any shape selected from the group consisting of squares, rectangles, trapezoids, triangles, circles and ellipses; the four sides of the square, the two sides of the rectangle, the trapezoid or at least one side of the triangle, or the said. 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; the gap consists only of the narrow portion, and the narrow portion is linear; At least one of the plurality of plate-shaped magnetic materials is a plate-shaped magnetic material having through holes; at least one of the plurality of plate-shaped magnetic materials is chamfered on the outer periphery thereof. Having a part; the part where the plate-shaped magnetic material is arranged stands up so that the interior building material is vertical, the diameter of the magnet part is 17 mmφ, and the attractive force to a 1 mm thick iron plate is strong. One 3.5N disk-shaped magnet has an attractive force that prevents the plain paper from falling when a sheet of A4 plain paper is held in the portion where the plate-shaped magnetic material is arranged. The base material is a plate-shaped member made of gypsum, and has a structure in which a plurality of plate-shaped magnetic materials are arranged and a paper sheet is further attached. That; the thickness of the plate-shaped magnetic material is 0.1 to 1.0 mm; the thickness of the plate-shaped magnetic material is 0.2 to 0.8 mm; the plurality of plates. Either of the magnetic materials of the above is either an iron plate or a steel plate whose both sides or one side is rust-proofed; its thickness is 9.5 to 10.0 mm; its thickness is It is 12.5 to 13.0 mm;

According to the present invention, an interior building material such as gypsum board, which has a simple structure but does not have a magnet on its surface, has a magnet attached to its surface by a simple means that can be put into practical use. It provides highly convenient interior building materials that have been modified to. According to the present invention, with the above configuration, plain paper or the like can be used on the surface of building materials for interiors by using a stopper with a magnet as a substitute for a thumbtack, a magnet sheet, etc. A highly convenient interior building material that exhibits sufficient magnet attraction to hold the magnet, 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, the cutter knife can be easily inserted between adjacent plate-shaped magnetic materials while being the highly convenient interior building material described above, whereby it is appropriate. It is an object of the present invention to provide an interior building material which can be easily cut to 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 building material for interior of this invention. It is a schematic diagram which shows another example of the building material for interior of this invention. It is a schematic diagram which shows another example of the building material for interior of this invention. It is a schematic diagram which shows another example of the building material for interior of this invention. It is a schematic diagram which shows another example of the building material for interior of this invention. It is a schematic diagram which shows another example of the building material for interior of this invention. It is a schematic diagram which shows another example of the building material for interior of this invention. It is a schematic diagram which shows another example of the building material for interior of this invention. It is a schematic diagram which shows another example of the building material for interior of this invention. It is a schematic diagram which shows another example of the building material for interior of this invention. It is a schematic diagram explaining the method of measuring the attraction force to the 1 mm iron plate of the magnet used when evaluating the attraction force to the magnet of the building material for interior 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.

As a result of diligent studies to solve the above-mentioned problems of the prior art, the present inventors modify a plate-shaped base material such as gypsum board which does not have a magnet so that a magnet is attached to the surface thereof. All of the conventional methods deteriorate the workability and design of the base material and lack industrial usability, and it was recognized that this point is the biggest technical problem in the prior art. As a result of examination based on such recognition, 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 front surface. In addition, adjacent magnetic materials are brought into contact with each other and fixed in a state where a plurality of plate-shaped magnetic materials are arranged side by side without a gap, or a plurality of adjacent plate-shaped magnetic materials are at least narrowed. The present invention has been made by finding that by arranging and fixing the magnet through a gap having a portion, it is possible to solve the problems of the prior art and to make it highly convenient and excellent in workability.

That is, when the interior building material of the present invention is provided with a gap by fixing a plurality of plate-shaped magnetic materials in a state of being arranged side by side without a gap, or by arranging and fixing a plurality of plate-shaped magnetic materials side by side through a gap having a narrow portion. Of course, even if the plate-shaped magnetic materials are lined up without gaps, the adjacent plate-shaped magnetic materials are separated from each other, so a cutter knife is placed between the plate-shaped magnetic materials. It was found that the blade can be easily inserted, and that the same workability as before the modification can be ensured.

According to the study by the present inventors, for example, a plurality of galvanized steel sheets, which are the plate-shaped magnetic materials shown in 2, are gapped on the gypsum board, which is the plate-shaped base material shown in FIG. Surprisingly, even when the interior building material 10 is fixed in a state where it is not arranged side by side, the above-mentioned interior building material 10 is slightly flexed so that the side to which the plurality of galvanized steel plates are fixed is convex. If not, 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 structure can be easily cut by the cutter knife. Further, as shown in FIG. 2, when the adjacent plate-shaped magnetic materials 2 are arranged and fixed side by side through a gap having a narrow portion shown in 3, this gap is formed. In addition, even a cutter knife blade or a blade of a utility knife thicker than the cutter knife blade can be easily inserted, and the base material can be easily cut with this blade. In the embodiment shown in FIG. 2, the gap having the narrow portion 3 formed by arranging the plurality of plate-shaped magnetic materials 2 on the base material 1 can be freely cut 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 in recognition of the portion to be the position. In this way, it becomes 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, a width in which the blade of a utility knife or the like can be easily inserted into the narrow portion 3 without bending the interior building material as described above. .. As a specific size of the narrow portion 3 when a gap is provided, the shortest distance between adjacent magnetic materials (narrow portion 3) may be within the range of 0.05 to 5.0 mm. Further, it may be narrower, such as within the range of 0.10 to 1.0 mm. Further, the position where the gap is provided may be arbitrarily determined in consideration of convenience when cutting and using the interior building material.

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

All of the conventional building materials for interiors using metal plates use large-area metal plates, which has been a cause of poor workability. On the other hand, in the present invention, for example, a gypsum board, which is a building material for an interior of 3 shaku x 6 shaku, is used as a base material 1, and as shown in FIG. The plate-shaped magnetic materials 3 are brought into contact with each other or are arranged and fixed in an orderly manner through a narrow gap to form an interior building material 10. With such a configuration, it is solved that the workability caused by using the above-mentioned large-area metal plate is deteriorated, and the remarkable effect of the present invention can be obtained. It should be noted that FIGS. 1 and 2 are schematic views, and are expressed by emphasizing the contact portion and the gap. The same applies to the other figures.

With the above configuration, the interior building material 10 of the present invention shown in FIG. 1 or FIG. 2 has a portion where the blade of a cutter knife can be easily inserted between the adjacent plate-shaped magnetic materials 2. It has a structure that can be cut with a cutter knife or the like and is divided into approximately 30 cm intervals. As a result, the interior building material of the present invention is magnetic without using a safety ruler or the like by using a partition (contact portion or gap) in which the blade of the cutter knife can be easily inserted and cut. The material serves as a guide, and the gypsum board, which is the base material 1, can be easily cut to a width (length) of, for example, 30 cm, 60 cm, 90 cm, etc. with 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 the effective utilization of resources is excellent and the economy is excellent. Not limited to the above, for example, if a square of approximately 10 cm square or a plate-shaped magnetic material of approximately 15 cm square is used, the building material for interior decoration of the present invention is 10 cm, 15 cm, 20 cm, 40 cm, 45 cm, 50 cm, and the like. 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 shapes of the plurality of plate-shaped magnetic materials 2 constituting the interior building material 10 of the present invention are not limited to the squares shown in FIGS. 1 and 2, and are, for example, rectangular (see FIGS. 3 and 4) and trapezoidal (not shown). , Circle (see FIG. 5), ellipse (not shown), 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 a combination of the above-mentioned figures may be used. For example, considering that it may be necessary to provide a through hole in an interior building material in interior work, the base material is largely exposed in a region formed by being 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.

Further, in the interior building material 10 of the present invention, in the examples given 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 arranged in 90% or more, more preferably 95% of the area of the front surface or the back surface of the base material 1. However, it is not always necessary to arrange them in this way. For example, as shown in FIGS. 11 and 12, it is sufficient to arrange the magnets in a range where it is considered that the convenience is improved by attaching a magnet to the surface of the interior building material. Further, in consideration of its workability, as shown in FIGS. 8 to 10, a plurality of plate-shaped magnetic materials 2 are arranged only in the portion where the building material which is the base material 1 is likely to be cut and used. It is also a preferred embodiment of the present invention to dispose a large-area plate-shaped magnetic material 2 in a portion having a structure that is not likely to be cut and used.

What is important in the present invention is that a plurality of plate-shaped magnetic materials are arranged side by side rather than a range in which a plurality of plate-shaped magnetic materials are arranged, and if necessary during construction, adjacent magnetic materials are placed next to each other. A blade such as a utility knife can be easily inserted between them, 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). That is, as a result of such a configuration, it can be easily and efficiently made into an interior building material having a size as required. Therefore, when an interior wall is formed, a magnet is attached to the surface of the formed wall. It is possible to provide products with excellent convenience, workability, and economy that can be made highly convenient, and at the same time, workability is not impaired and the amount of scraps generated can be reduced. Become.

A more preferable form of an interior building material having a structure in which a blade such as a cutter knife can be easily inserted between adjacent magnetic materials, which is an object of the present invention, is at least one of a plurality of plate-shaped magnetic materials 2. In addition, if necessary, it is possible to use a material having a chamfered portion on its outer edge (outer circumference). In such a form, 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 for interior building materials that are fixed in a state, blades such as cutter knives can be more easily inserted between adjacent plate-shaped magnetic materials. Further, if a chamfered portion is provided on the outer edge (outer circumference) of the magnetic material 2, even if a sheet-like material such as wallpaper is attached to the surface of the interior building material of the present invention, it is adjacent to the magnetic material 2. A blade such as a utility knife can be easily inserted between the matching plate-shaped magnetic materials, making it easier to cut.

The method of fixing the plurality of plate-shaped magnetic materials constituting the interior building material of the present invention on the base material may be any conventionally known method. For example, the magnetic material may be attached to the base material with an adhesive or fastened to the base material with double-sided tape. The adhesive is not particularly limited, and for example, an organic adhesive such as a vinegar-based adhesive or an epoxy-based adhesive, or an inorganic adhesive such as an alkali metal silicate-based 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 that has been surface-treated. The surface treatment of the surface-treated steel sheet may be any treatment as long as the magnet can be attached to the surface of the interior building material when the interior building material of the present invention is constructed. For example, alloys such as galvanized steel sheets (galvanized steel sheets) and other single metal plated steel sheets (single metal plated steel sheets) and hot-dip 55% aluminum-zinc alloy plated steel sheets (galvanized steel sheets (registered trademark)). Examples thereof include galvanized steel sheets (alloy-plated steel sheets). In the examples described later, a case where a galvanized steel sheet is arranged is shown as a typical example thereof, but of course, 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). With this configuration, nails and screws can be driven into the through holes during or after the construction of the interior building material of the present invention, 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 the interior building material of the present invention in which a plate-shaped magnetic material is fixedly provided on the base material surface is fastened, a through hole is provided in the plate-shaped magnetic material. If so, by using this through hole, it can be easily fastened with a screw or the like using a general-purpose power tool, and the surface condition after fastening with a screw or the like is flat and good. become. On the other hand, if the plate-shaped magnetic material is not provided with through holes, the interior building material of the present invention should be fastened with screws or the like using a general-purpose power tool, although it depends on the thickness of the magnetic material. Then, the surface of the magnetic material is not a little bulged (protruding convexly toward the surface side), so that when the surface is finished with wallpaper or the like, a problem in appearance may occur 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, the size of the through hole is preferably such that the screw head and the nail head can be accommodated, for example, about 10 to 20 mmφ. The position where the through holes are provided and the number of through holes are not particularly limited, and the improvement of workability, convenience, and design, which can be obtained by providing the through holes in the interior building material of the present invention, can be improved. It may be decided appropriately in consideration of it. Further, by treating the through hole portion using a putty material containing a magnetic material and a resin or the like, the through hole in which the screw head or the nail head is housed can be smoothly treated.

A preferred form of the interior building material of the present invention is 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. Can be mentioned. With this configuration, it is possible to paint without primer treatment, or to apply wallpaper with ordinary wallpaper paste. The material of the sheet used above is not limited to paper, and may be any material. Suitable ones include, for example, a material for wallpaper that is easily glued, and a material that can obtain surface characteristics to which a paint can be directly applied.

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

Considering various situations that occur when the inner wall surface is formed, the interior building material of the present invention can exhibit at least an attractive force that can fix A4 paper with one magnet, as described above. Is preferable. More specifically, the portion where the plate-shaped magnetic material constituting the interior building material of the present invention is arranged stands vertically so that the interior building material has a diameter of 17 mmφ and the magnet portion has a diameter of 17 mmφ. When one disk-shaped magnet having an attractive force of 3.5 N on a 1 mm-thick iron plate holds one sheet of A4 plain paper in the portion where the plate-shaped magnetic material is arranged, the plain paper It is desired that the magnet has an attractive force that does not drop. It was measured as shown in FIG. 13 that the disk-shaped magnet having a diameter of 17 mmφ used in the above test had an attractive force of 3.5 N on 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 mmφ was placed on an iron plate 3 having a thickness of 1 mm, and the magnet 5 with a hook was held and pulled up under the condition of a test speed of 3 mm / sec to read the maximum strength. Is.

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

Therefore, it is preferable to use gypsum board as the base material constituting the interior building material of the present invention. The gypsum board is not limited to a general-purpose board, and examples thereof include a waterproof board with improved waterproofness and a reinforced gypsum board with further enhanced fire resistance. In addition, examples of the base material constituting the interior building material include a board made of rock wool and a board made of glass fiber. According to the study by the present inventors, a plurality of plate-shaped magnetic materials are arranged on one surface of the gypsum board in a state where adjacent magnetic materials are in close contact with each other, or adjacent to each other. Regardless of the form of the interior building material of the present invention in which matching magnetic materials are arranged through gaps, a blade such as a cutter knife can be easily inserted between adjacent plate-shaped magnetic materials. By making a cut in 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 the existing gypsum board as the base material, it is possible to realize a product with highly convenientness without impairing the high workability of the gypsum board.

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

[Example 1]
In the interior building material of this example, a gypsum plate-like member (gypsum board) having a thickness of 12.5 mm, a length of 1820 mm and a width of 901 mm was used as a base material. Further, as a plate-shaped magnetic material, 18 sheets of 30 cm square square zinc steel sheets having a thickness of 0.5 mm were prepared. Then, as shown in FIG. 2, 18 zinc steel plates 2 are placed on the surface of the gypsum board which is the base material 1, and the adjacent zinc steel plates are formed in 3 horizontal × 6 vertical with a predetermined gap. Arranged so that they are lined up in an orderly manner. Specifically, the three horizontal sheets are arranged through a gap consisting of a linear narrow portion 3 having a width of 0.5 mm, and the six vertical sheets are each composed of a linear narrow portion 3 having a width of 0.4 mm. A zinc steel plate was arranged over the entire surface of the base material so as to be arranged through a gap to obtain an interior building material of this embodiment. A vinyl acetate adhesive was used as a means for fixing the galvanized steel sheet. In FIG. 2, the gap is exaggerated from the actual size for the sake of clarity.

When the obtained plate-shaped interior building material 10 was visually and tactilely observed, the surface on the side where the zinc steel plates were arranged side by side had an extremely narrow gap between the adjacent zinc steel plates, so that the surface was different from the conventional gypsum board. The appearance gave the same impression, and the feeling of touching with the hands was flat as in the conventional one, including the surface on the side where the galvanized steel sheet was arranged.

In addition, the attractive force of the magnet on the surface on the side where the galvanized steel sheets are arranged side by side was confirmed by the following method. That is, the interior building material is erected so as to be vertical, and one magnet having a magnet portion diameter of 17 mmφ and an attractive force to the 1 mm thick iron plate of 3.5 N is thick on the surface on the galvanized steel plate side. A4 paper having a size of 0.09 mm and a mass of 64 g / m ^{2 was held.} As a result, it was possible to hold 5 sheets without falling.

The blade of a utility knife can be easily inserted into the gap portion of the interior building material obtained above, which is formed by adjacent galvanized steel sheets and is composed of a linear narrow portion 3 having a width of 0.5 mm or a width of 0.4 mm. 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 of 30 cm (length) or a width of 60 cm (length) without using a tape measure.

[Example 2]
In the interior building material of this example, a gypsum plate-like member (gypsum board) having a thickness of 12.5 mm, a length of 1800 mm and a width of 900 mm was used as the base material 1. Then, 18 sheets of 30 cm square zinc steel plates similar to those used in Example 1 were used, and adjacent zinc steel plates were arranged in a state of contact with each other, and as shown in FIG. 1, plate-like magnetism Similar to Example 1 except that the materials are fixed in a state of being lined up on the surface of the base material 1 with 3 horizontal × 6 vertical, and for the plate-shaped interior of this embodiment. Obtained building materials. As a result, in the same manner as in Example 1, an appearance giving the same impression as the conventional gypsum board, also felt touched by hand, the conventional, including the surface on which the zinc steel plate is arranged and Similarly, a flat building material was obtained. Then, the surface on which the zinc steel plate are arranged side by side, the suction force by the magnet, as in the case of Example 1, was able to hold 5 sheets of A4 paper with a magnet.

The interior building material obtained above can be bent convexly toward the side where the galvanized steel sheets are lined up, so that the blade of the cutter knife can be easily inserted into the portion where the adjacent galvanized steel sheets and the galvanized steel sheets are in contact with each other. As a result, the plate-shaped member made of gypsum, which is the base material, could be easily cut. Further, the cut piece could be easily made into a member having a width of 30 cm (length) or a width of 60 cm (length) without using a tape measure.

[Example 3]
In the interior building material of this embodiment, a gypsum plate-like member having a thickness of 12.5 mm, a length of 1820 mm, and a width of 910 mm, which satisfies the size of the gypsum board defined by the JIS standard, was used as the base material 1. .. Further, as a plate-shaped magnetic material, 18 sheets of 30.3 cm square zinc steel sheets having a thickness of 0.5 mm were prepared. Then, as shown in FIG. 2, 18 zinc steel plates were arranged so that adjacent zinc steel plates were arranged in an orderly manner with 3 horizontal × 6 vertical through a predetermined gap. Specifically, the three horizontal sheets are arranged through a gap consisting of a linear narrow portion 3 having a width of 0.5 mm, and the six vertical sheets are each composed of a linear narrow portion 3 having a width of 0.4 mm. A zinc steel plate was arranged over the entire surface of the base material 1 so as to be arranged through a gap to obtain an interior building material of this embodiment.

When the plate-shaped interior building material obtained above was visually and tactilely observed, the side surface on which the galvanized steel sheets were arranged side by side had gaps between adjacent galvanized steel sheets as in the building material of Example 1. Since it is extremely narrow, it has an appearance that gives the same impression as a conventional gypsum board, and the feeling of touching it by hand is flat as well as the conventional one including the surface on the side where the galvanized steel sheet is arranged. Then, when the suction force of the surface on which the zinc steel plate are arranged side by side, was confirmed using a magnet with a specific attraction force described above, as in Example 1, the A4 paper in the magnet 5 I was able to hold one sheet.

The blade of a utility knife can be easily inserted into the gap portion of the interior building material obtained above, which is formed by adjacent galvanized steel sheets and is composed of a linear narrow portion 3 having a width of 0.5 mm or a width of 0.4 mm. 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 of about 30 cm (length) or a width of about 60 cm (length) without using a tape measure.

1: Base material 2: Plate-shaped magnetic material 3: Narrow gap 4: Iron plate 5: Magnet with hook with attractive force of 3.5N 10: Interior building material

Claims (13)

A plurality of plate-shaped magnetic materials are arranged on at least a part of the front surface or the back surface of a plate-shaped base material without a gypsum magnet so that adjacent magnetic materials have a portion in contact with each other. have been, for interiors building material side the magnetic material is fixed, characterized in that the bent such that convex. 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 of being arranged side by side without a gap. Claim 1 in which the plurality of plate-shaped magnetic materials have the same shape, and the shape is any one selected from the group consisting of a square, a rectangle, a trapezoid, a triangle, a circle, and an ellipse. Or the building material for interior according to 2. Claim that the diameter of the four sides of the square, the two sides of the rectangle, the trapezoid or at least one side of the triangle, or the circle, or at least the major or minor axis of the ellipse is 10 cm to 35 cm. Interior building material according to 3. The interior building material according to any one of claims 1 to 4 , wherein at least one of the plurality of plate-shaped magnetic materials is a plate-shaped magnetic material having through holes. The interior building material according to any one of claims 1 to 5 , wherein 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 stands up so that the interior building material is vertical, the diameter of the magnet portion is 17 mmφ, and the attractive force to a 1 mm thick iron plate is 3.5 N. Claim 1 has an attractive force that prevents the plain paper from falling when one A4 plain paper is held in a portion where the plate-shaped magnetic material is arranged by one disk-shaped magnet. The interior building material according to any one of 6 to 6. Before SL plurality of plate-like interior building materials according to any one of claims 1 to 7, the magnetic material is a further structure sheet is stuck paper on which is located. The interior building material according to any one of claims 1 to 8 , 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 9 , wherein the plate-shaped magnetic material has a thickness of 0.2 to 0.8 mm. The interior according to any one of claims 1 to 10 , wherein any of the plurality of plate-shaped magnetic materials is either an iron plate or a steel plate having rust-preventive treatment applied to both sides or one surface thereof. Building materials. The interior building material according to any one of claims 1 to 11, which has a thickness of 9.5 to 10.0 mm. The interior building material according to any one of claims 1 to 11, which has a thickness of 12.5 to 13.0 mm.

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