JP2017160692A - Wall-covering material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wall-covering material capable of securing strength while using a plate-like material of a thin thickness, and capable of also restraining strain of an image reflected in the wall-covering material even when stuck to a backing material having a step difference part.SOLUTION: A wall-covering material 10 of the present embodiment includes a fragile glass plate 12 and a plate-like resin material 16 provided via a design layer 14 on one surface of the glass plate 12, and is premised on the wall-covering material of 0.5 mm-3.2 mm in a thickness of the glass plate 12, of 2 mm-8 mm in a thickness of a resin material 16 and of 400kPa or less in 25% compressive stress of resin of the resin material 16. The wall-covering material 10 of the present embodiment aims at 20% or more in a step difference absorption coefficient.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wall covering material.

  A wall covering material (laminated body) in which a design layer is laminated on the back surface of a transparent glass plate is known as a surface decorative material fixed to a base material of an inner wall of a building (for example, Patent Document 1). The design layer of the wall covering material is formed by applying a paint containing a pigment or the like on the back surface of the transparent glass plate, and since it is in close contact with the transparent glass plate, the design layer is visually recognized through the transparent glass plate. It can produce a sense of quality. For example, in a building, a high-quality inner wall can be realized by fixing the design layer side of the wall covering material to a base material such as a gypsum board or plywood.

  On the other hand, in Patent Document 2, a plurality of building wall coverings (corresponding to wall coverings) provided with a base and a spray-coated body formed on the base are constructed in a state where they are joined vertically and horizontally. The construction method of the building stuck on the outer wall surface (equivalent to a base material) of the thing is disclosed. Moreover, in the construction method of patent document 2, it is disclosed that it is preferable to stick the building wall covering to the outer wall surface of a building using an adhesive.

JP 2014-76625 A JP 2000-96801 A

  The sticking method disclosed in Patent Document 2 is generally called a mirror method, and is attached to a base material by spotting an adhesive on the base material.

  By the way, in the mirror method, there is a problem that the workability deteriorates because the wall covering becomes heavy as the thickness of the wall covering increases. However, since the rigidity of the wall covering material becomes small, there is a problem that it becomes difficult to attach the wall covering material flatly to the base material. Moreover, it was also confirmed that the following problems occur when a thin wall covering material is attached to a base material of a platy material such as a plaster board or plywood.

  That is, when the base material is constituted by the above plate-like material, a putty is applied along the joint to fill a gap generated at the joint between the plate-like materials, but the putty is a flat portion of the base material. It protrudes from and remains as a stepped portion. Since the conventional wall covering material having a small thickness is difficult to absorb the stepped portion, the flatness of the wall covering material is deteriorated. That is, a part of the wall covering material adhered to the step portion is deformed into a ridge (equivalent to “warping”) by the transfer of the step portion, so that the flatness of the wall covering material is deteriorated. . When the wall covering is made of glass or glossy resin, the image reflected on the deformed portion of the ridge is distorted, so that the appearance of the wall covering is deteriorated.

  As described above, conventional wall coverings have a problem that if the thickness is reduced in order to improve workability, the flatness deteriorates or the step portion of the base material cannot be absorbed and deformed into a convex shape. did.

  In the above example, the glass wall covering material has been described. However, the same problem occurs not only with the glass wall covering material but also with other brittle material.

  The present invention has been made in view of the above circumstances, and it is possible to ensure strength while using a thin plate-like material, and even when it is attached to a base material having a stepped portion, it is a wall covering material. An object of the present invention is to provide a wall covering material that can suppress distortion of an image reflected on the wall.

  In order to achieve the object of the present invention, the present invention has a brittle plate material having design properties, and a plate-like resin material provided on one surface of the plate material. The thickness is 0.5 mm or more and 3.2 mm or less, the thickness of the resin material is 2 mm or more and 8 mm or less, the 25% compression stress of the resin of the resin material is 400 kPa or less, and the step absorption calculated by the following test method A wall covering having a rate of 20% or more is provided.

〔Test method〕
A base model body having a flat part and a step part provided in the flat part, the height of the flat part being not less than 0.5 mm and not more than 1.0 mm, and the width of the belt is 5 mm. Prepare a rectangular wall covering with a side of 300 mm, place the resin material side of the wall covering across the flat part and the step part of the base model body, and sandwich the step part. The wall covering material and the base model body are sandwiched by the sandwiching member at a position 50 mm apart on both sides with a compressive stress of 10% or less of the resin. The opposite surface is the A surface, the surface of the wall material placed on the stepped portion of the base model body is the B surface, and the wall covering material placed on the flat portion of the base model body The surface on the plate-like material side of the edge is the C surface, the height from the A surface to the B surface is H1, the height from the A surface to the C surface is H2, The height from the flat portion of the model body to the stepped portion when the H3, is step absorption rate calculated by the following equation (1) is 20% or more.

  [1- (H1-H2) / H3] × 100 (1)

  Here, even if it is a thin plate-shaped light weight material, the intensity | strength as a wall covering material is acquired by integrating with a plate-shaped resin material. By using such a wall covering material, the workability is improved and the wall covering material can be flatly attached to the base material. Based on this knowledge, the present invention provides a thin plate-like material by regulating the thickness of the plate-like material to 0.5 mm or more and 3.2 mm or less and the thickness of the resin material to 2 mm or more and 8 mm or less. We secured the strength of the wall covering while using it.

  On the other hand, when the wall covering material is attached to the base material, a part of the plate-like material is transferred to the step portion of the base material and deformed into a ridge. As a result of examining the distortion of the image reflected on the deformed portion of the ridge, if the step absorption rate calculated by equation (1) is 20% or more, the distortion of the image reflected on the wall covering is suppressed. It was confirmed by experiment that it was possible. And, as a result of examining the 25% compressive stress of the resin of the resin material based on the viewpoint of suppressing the distortion of the image reflected in the wall covering, if it is 400 kPa or less, in the wall covering of the above thickness size, It was confirmed that the distortion of the image reflected on the wall covering can be suppressed, and that the wall covering can be provided with no external discomfort.

  In the equation (1), the value calculated by (H1−H2) / H3 indicates the deformation rate of the wall covering material with respect to the stepped portion. By subtracting the deformation rate from 1, the step absorption rate is calculated. The step absorption rate is a suitable value for evaluating the distortion of the image reflected on the wall covering material.

  According to the wall covering material of the present invention, strength can be ensured while using a thin plate-like material, and even when it is attached to a base material having a stepped portion, it is reflected in the wall covering material. Image distortion can be suppressed.

The figure which showed the cross section of the wall covering material of embodiment typically A perspective view showing a testing machine for calculating the step absorption rate (A) is a plan view of the test body, (B) is a side view of the test body, and (C) is an enlarged view of part D of (B). List showing the step absorption rate of test result 1 in 24 wall coverings In the test result 1, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 5mm, and the height of the protruding item | line part of wall covering In the test result 1, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 4mm, and the height of the protruding part of wall covering In the test result 1, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 3mm, and the height of the convex part of a wall covering In the test result 1, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 2mm, and the height of the protruding item | line part of wall covering Table showing the step absorption rate of test result 2 for 24 wall coverings In the test result 2, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 5mm, and the height of the protruding part of wall covering In the test result 2, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 4mm, and the height of the protruding part of wall covering In test result 2, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 3mm, and the height of the protruding part of wall covering In the test result 2, the graph which showed the relationship between 25% compressive stress with respect to the resin material of thickness 2mm, and the height of the protruding item | line part of wall covering material List showing the step absorption rate of test result 3 for 24 wall coverings In the test result 3, the graph which showed the relationship between 25% compressive stress with respect to the resin material of thickness 5mm, and the height of the protruding item | line part of wall covering In the test result 3, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 4mm, and the height of the protruding part of wall covering In the test result 3, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 3mm, and the height of the protruding part of wall covering In the test result 3, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 2mm, and the height of the protruding item | line part of wall covering List showing the step absorption rate of test result 4 for 24 wall coverings In the test result 4, the graph which showed the relationship between 25% compressive stress with respect to the resin material of thickness 5mm, and the height of the protruding part of wall covering In the test result 4, the graph which showed the relationship between 25% compressive stress with respect to the resin material of thickness 4mm, and the height of the protruding item | line part of wall covering In the test result 4, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 3mm, and the height of the protruding part of wall covering In the test result 4, the graph which showed the relationship between the 25% compressive stress with respect to the resin material of thickness 2mm, and the height of the protruding item | line part of wall covering (A) is a top view schematically showing the contents of a visible light transmittance test of a resin material, and (B) is a side view of (A). Table showing the evaluation results of the visible light transmittance test (A) is an enlarged side view of a parting material having a protrusion, and (B) is an enlarged perspective view in which the parting material is provided on a wall covering material. Enlarged side view showing other forms of parting material

  Hereinafter, embodiments of the wall covering material of the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments, and various modifications and substitutions can be made to the following embodiments within the scope of the present invention.

[Wall covering 10]
FIG. 1 is a cross-sectional view schematically showing a wall covering 10 according to the embodiment.

  The wall covering material 10 is adhered to the surface of the base material constituting the wall surface of the building with an adhesive. Examples of the base material include platy materials such as gypsum board and plywood. The wall covering 10 can also be applied to various uses such as building materials such as walls and ceilings and storage furniture.

  The wall covering 10 includes a transparent glass plate 12 that is a brittle plate-like material, and a plate-like resin material 16 that is provided on one surface of the glass plate 12 via a design layer 14. The glass plate 12 is provided with a design property by the design layer 14. The resin material 16 is bonded to the design layer 14 with an adhesive described later.

  With the above configuration, the glass plate 12 of the wall covering 10 is reinforced by the resin material 16 and thus is difficult to break. Further, even when the glass plate 12 is broken, the glass plate 12 is bonded to the resin material 16, so that scattering of glass pieces can be prevented. Furthermore, even if an impact is applied to the glass plate 12, the resin material 16 absorbs the impact, so that the impact resistance is also improved. Thereby, the wall covering material 10 of embodiment has high safety | security. Moreover, since the design layer 14 is provided on one surface of the glass plate 12 as in the case of the conventional wall covering material, it is possible to produce a high-quality aesthetic appearance.

  In addition, in embodiment, although the glass plate 12 is illustrated as a plate-shaped material of the wall covering material 10, it is not limited to this. For example, a brittle plate made of a hard resin such as melamine, acrylic, or polycarbonate may be applied, or a brittle plate such as ceramic or stone may be applied.

<Glass plate 12>
The glass type of the glass plate 12 is not particularly limited, and examples thereof include soda lime glass, alkali-free glass, aluminosilicate glass, and the like. The thickness of the glass plate 12 is defined as 0.5 mm or more and 3.2 mm or less in order to improve the workability of the wall covering 10.

  In general, a glass plate has a large specific gravity, and a glass plate applied as a wall covering has a large area, and thus becomes a heavy object. For this reason, the construction of the wall covering on the base material is not easy because several workers need to construct it. Therefore, in the embodiment, since the strength as the wall covering material 10 is secured by bonding the resin material 16 to the glass plate 12, the thickness of the glass plate 12 can be reduced. That is, the thickness of the glass plate used as the wall covering material is conventionally 4 mm or more, but in the embodiment, the thickness of the glass plate 12 is regulated to 0.5 mm or more and 3.2 mm or less. Further, based on the thickness of the resin material 16 and the 25% compressive stress, the thickness of the glass plate 12 can be regulated to 1.5 mm or more and 3.2 mm or less, and 0.5 mm or more and 1.5 mm or less. It can also be defined as less than.

  The glass plate 12 can be manufactured by a known method. That is, it is manufactured by cutting glass formed into a ribbon shape by a float method, a fusion method, a downdraw method, a roll-out method or the like. The glass plate 12 may be a glass plate strengthened by a chemical strengthening process such as an ion exchange method or a physical strengthening process such as an air cooling strengthening method.

  Further, the visible light transmittance (determined according to JIS R3106) of the glass plate 12 is preferably 60% or more, and more preferably 70% or more. Furthermore, since a texture is provided on the surface of the glass plate 12, the surface of the glass plate 12 may be subjected to a texture treatment by post-processing such as frost processing.

<Design layer 14>
A design layer 14 is provided between the glass plate 12 and the resin material 16. The glass plate 12 is provided with a design layer 14 having a design property interposed between the glass plate 12 and the resin material 16. The design layer 14 is preferably in close contact with the glass plate 12. Thereby, the wall covering 10 when looking at the design layer 14 through the glass plate 12 is increased in a sense of depth and luxury, and is excellent in aesthetics. The design layer 14 may be formed by applying a paint containing a color pigment to the surface of the glass plate 12 and drying and curing. Examples of the paint include acrylic resin paints. Acrylic resin-based paints have high adhesion and are excellent in weather resistance and corrosion resistance. Moreover, it is preferable at the point that a finish is beautiful. The design layer 14 is not particularly limited as long as it can provide design properties. For example, the design layer 14 may be a melamine resin-based paint or an epoxy resin-based paint, and the color pigments may have various colors.

  Although it does not specifically limit as a coating method of a coating material, For example, a roll coat method, a spray coat method, a dip coat method, a flow coat method, a screen printing method, a spin coat method etc. are mentioned.

  Moreover, you may affix not the coating material but the design layer 14 shape | molded by the sheet form to the glass plate 12 with an adhesive agent. In this case, the design layer 14 formed into a sheet shape may be a single color, or may be formed with a natural stone-like or brick-like pattern.

<Resin material 16>
The resin material 16 is specified to have a thickness of 2 mm or more and 8 mm or less in order to reinforce the glass plate 12 and to absorb a step of the band-shaped step portion of the base material, which will be described later, and the resin of the resin material 16 25% compressive stress of 400 kPa or less. It is preferable that the thickness of the resin material 16 is 8 mm or less, because the thickness of the resin material 16 is equal to the thickness of the conventional glass decorative plate, and therefore, the work on the wall surface does not require special work as in the conventional case. Moreover, it is more preferable that it is 5 mm or less.

  The resin material 16 is attached to the design layer 14 with an adhesive or a pressure-sensitive adhesive (hereinafter referred to as an adhesive including the pressure-sensitive adhesive). The adhesive may be applied to the entire surface of the resin material 16 or a part thereof. It is advantageous to apply the adhesive to the entire surface because the glass plate 12 is difficult to break. Further, an adhesive may be applied to the design layer 14 of the glass plate 12. As the adhesive, a general architectural sealant can be used, and examples thereof include a modified silicone sealant, an acrylic adhesive, and a synthetic rubber adhesive. The adhesive may be in the form of a sheet such as a double-sided tape. Moreover, it is suitable as a building material that an adhesive agent selects material and the application quantity so that nonflammability may become high.

  The size of the resin material 16 may be a size that covers the entire surface of one side of the glass plate 12, or may be a size having a size of about 80% or more with respect to the surface area of the one side of the glass plate 12.

  The Shore A hardness of the resin material 16 is preferably 10 or more and 60 or less. Shore A hardness refers to the measured value of a durometer (Asker Rubber Hardness Tester A type manufactured by Asker). If the Shore A hardness is 10 or more, the wall covering 10 can be supported with sufficient rigidity, so that the workability of the wall covering 10 is improved. The Shore A hardness of the resin material 16 is preferably 20 or more, more preferably 30 or more. Further, if the Shore A hardness is 60 or less, it has a sufficient impact absorption property, and therefore, it is preferable because the glass plate 12 is hardly broken even if it receives a strong impact.

  The resin material 16 is preferably a foamed polyethylene resin, a foamed urethane resin, or a foamed rubber having light weight and appropriate flexibility. Since these resins are flame retardant, they can be certified as non-combustible materials as building materials.

  Moreover, the designability of the wall covering 10 is maintained by setting the visible light transmittance of the resin material 16 to 10% or less. The visible light transmittance of the resin material 16 is preferably 10% or less based on the visible light transmittance test shown in FIGS. 24A and 24B and the visible light transmittance test result shown in FIG. Is based. Details of the visible light transmittance test of FIGS. 24A and 24B and the visible light transmittance test result of FIG. 25 will be described later in the specification.

  FIG. 26A is an enlarged side view of a parting material 34 having a protrusion 32. FIG. 26B is an enlarged perspective view in which a parting material 34 having a substantially L shape in side view is provided at the edge of the wall covering 10.

  As shown in FIG. 26, the wall covering material 10 may include a parting material 34 having a protrusion 32. Since the 25% compressive stress of the resin of the resin material 16 is regulated to 400 kPa or less, the projecting portion 32 of the parting material 34 is replaced with the surface 16A on the inner wall side of the building of the resin material 16 as shown in FIG. And the parting material 34 can be mounted and fixed to the wall covering material 10 by being sandwiched in the interface with the base material 36 of the inner wall of the building. Moreover, the shape of the parting material 34 is not limited to the shape of FIG. 26 (A), For example, the shape of the side surface 38A may be flat like another form of the parting material 38 shown in FIG. The parting materials 34 and 38 are preferably made of resin, and are preferably insert-molded with an aluminum foil.

[Flatness confirmation test of wall covering 10]
As described above, the strength of the wall covering material 10 can be obtained by integrating the thin glass glass 12 with the resin material 16. By using such a wall covering 10, the workability is improved and the wall covering 10 can be flatly attached to the base material. In the embodiment based on this knowledge, the thickness of the glass plate 12 is specified to be 0.5 mm or more and 3.2 mm or less, and the thickness of the resin material 16 is specified to be 2 mm or more and 8 mm or less. The strength as the wall covering 10 was secured while using the thin glass plate 12.

  On the other hand, when the wall covering material 10 is attached to the base material, a part of the wall covering material 10 is transferred to the step portion of the base material and deformed into a ridge. As a result of examining the distortion of the image reflected on the wall covering, which occurs in the deformed portion of the ridge, if the step absorption rate described later is 20% or more, the distortion of the image reflected on the wall covering is suppressed. It was confirmed by experiments that It was confirmed by experiments that the step absorption rate is more preferably 30% or more. As a result of examining the 25% compressive stress of the resin of the resin material 16 based on the viewpoint of suppressing the distortion of the image reflected on the wall covering material, the wall covering material 10 having the above-mentioned thickness size is 400 kPa or less. In the experiment, it was confirmed by experiments that the distortion of the image reflected on the wall covering material can be suppressed.

  The wall covering material 10 of the embodiment includes a brittle glass plate 12 and a plate-like resin material 16 provided on one surface of the glass plate 12 via a design layer 14. The thickness of the glass plate 12 Is 0.5 mm or more and 3.2 mm or less, the thickness of the resin material 16 is 2 mm or more and 8 mm or less, and 25% compressive stress of the resin of the resin material 16 is assumed to be a wall covering material of 400 kPa or less. And the wall covering material 10 of embodiment targets the thing whose level | step difference absorption rate calculated by the following flatness confirmation test is 20% or more. Thereby, according to the wall covering material 10 of the embodiment, the strength can be ensured while using the thin glass plate 12, and the wall covering 10 can be used even when it is attached to the base material having the stepped portion. The distortion of the image reflected on the material can be suppressed.

<Test body 20>
2 is a perspective view showing a test body 20 used in the flatness confirmation test, FIG. 3A is a plan view of the test body 20, FIG. 3B is a side view of the test body 20, and FIG. 3 (C) is an enlarged view of a D portion indicated by a circle in FIG. 3 (B).

  In the flatness confirmation test, the wall covering 10 was brought into close contact with the gypsum board 22 which is a base model body assuming an actual base material by four clips (clamping members) 24, and the flatness of the wall covering 10 was confirmed. .

  The gypsum board 22 has a thickness of 12.5 mm, and the flat portion 22A is provided with a protruding step portion 22B. The step portion 22B is a central portion of the flat portion 22A, and is provided in parallel along the two opposite sides E and F of the gypsum board 22. Four clips 24 are arranged on both sides of the step portion 22B. Further, the stepped portion 22B has a height (H3) from the flat portion 22A of 0.5 mm and a width of 5 mm. Another gypsum board 22 having a stepped portion 22B having a height (H3) from the flat portion 22A of 1.0 mm and a width of 5 mm is also prepared. In the flatness confirmation test of the present case, an acrylic plate having a width of 5 mm and a height (H3) of 0.5 mm and 1.0 mm is used as the step portion 22B, and this acrylic plate is used as the flat portion 22A. By placing or bonding, the stepped portion 22B was formed on the flat portion 22A.

  The wall covering 10 is a rectangular body having a side of 300 mm and has the configuration shown in FIG. The gypsum board 22 is also preferably a rectangular body having a side of 300 mm.

  On the other hand, two clips 24 are arranged on each of the two opposite sides G and J of the plaster board 22, and the compression deformation of the resin material 16 when the wall covering 10 is brought into close contact with the plaster board 22 is 10%. The clamping force is defined as follows. This is based on the fact that the compression deformation rate of the resin material 16 generated when the wall covering 10 is brought into close contact with the actual base material is 10% or less. Moreover, the width of the clip 24 is 50 mm, and the positions spaced by 50 mm from both sides of the stepped portion 22B are sandwiched.

  As described above, in the flatness confirmation test of the present case, it is assumed that the height of the step portion generated in the actual base material is not less than 0.5 mm and not more than 1.0 mm, and the width is assumed to be 5 mm. It was a test. In the flatness confirmation test of the present case, the distortion of the image of the wall covering 10 caused by the warpage of the wall covering 10 caused by the step portion 22B is visually evaluated.

<Test method>
The resin material 16 side of the wall covering 10 is placed across the flat portion 22A and the step portion 22B of the gypsum board 22. Next, the wall covering material 10 and the gypsum board 22 are sandwiched between the clips 24 at a position spaced by 50 mm on both sides of the stepped portion 22B with a compressive stress of 10% or less of the resin of the resin material 16. Thereby, the wall covering 10 and the stepped portion 22B are relatively pressed, and a part of the wall covering 10 placed on the stepped portion 22B is deformed into a ridge along the stepped portion 22B.

  At this time, the surface opposite to the surface on which the wall covering material 10 of the plaster board 22 is placed (the surface on the flat portion 22A side) is the A surface, and the wall covering 10 placed on the step portion 22B of the plaster board 22 is used. The surface on the glass plate 12 side is the B surface, the surface on the glass plate 12 side of the edge of the wall covering 10 placed on the flat portion 22A of the gypsum board 22 is the C surface, and from the A surface to the B surface The value calculated by the following equation (1) when the height is H1, the height from the A surface to the C surface is H2, and the height from the flat portion 22A to the step portion 22B of the gypsum board 22 is H3. Is obtained as the step absorption rate.

[1- (H1-H2) / H3] × 100 (1)
In the test method of this case, the A surface, which is the back surface 22C of the gypsum board 22, was set as the reference position. Further, the detection point of the height H1 is the point C shown in FIG. Moreover, the detection point of height H2 is A point and B point, and the average value of A point and B point was prescribed | regulated as height H2. Further, the point A is set at a coordinate position 10 mm away from the corner K where the two orthogonal sides E and G of the wall covering 10 intersect each other. Similarly, the point B is set at a coordinate position 10 mm away from the corner M where the two orthogonal sides F and G of the wall covering 10 intersect each other.

  The level difference absorption rate of the above equation (1) will be described. The value calculated by (H1−H2) / H3 indicates the overall deformation rate of the wall covering 10 due to the level difference portion 22B. By subtracting the deformation rate from 1, the step absorption rate is calculated. The step absorption rate is a suitable value for evaluating the distortion of the image reflected on the wall covering 10. The inventor of the present invention repeats diligent experiments, and if the step absorption rate calculated by the expression (1) is 20% or more, the distortion of the image can be suppressed, and the wall that does not give an uncomfortable appearance. Confirmed that the equipment can be provided. In FIG. 3C, the subtraction value of H1-H2 is indicated by a symbol t for convenience.

<Test result 1>
Table 1 shown in FIG. 4 is a resin material having a thickness of 5 mm, 4 mm, and a resin material having a 25% compressive stress of 50 kPa, 110 kPa, 130 kPa, 200 kPa, 275 kPa, 475 kPa using a glass plate having a thickness of 0.7 mm. It is the table | surface which showed the level | step difference absorption factor of a total of 24 wall covering materials with which the resin material of 3 mm and 2 mm was equipped. In Table 1, the step absorption rate when the height (H3) of the step portion 22B is set to 0.5 mm and 1.0 mm is shown for each of the 24 wall coverings. The resin material deformation rate shown in Table 1 is not the deformation rate of the entire wall covering, but only the resin material when the height (H3) of the stepped portion 22B is set to 0.5 mm and 1.0 mm. The deformation rate is shown.

  Here, the thickness 0.7 mm of the glass plate is a nominal thickness defined in Japanese Industrial Standard (JIS R 3202: 2011) and has a tolerance of ± 0.2 mm. That is, a glass plate having a thickness of 0.7 mm refers to a glass plate having a thickness of 0.5 mm or more and 0.9 mm or less.

  5 to 8 show the relationship between the resin 25% compression stress (horizontal axis) and the height of the ridges of the wall covering (vertical axis (H1-H2)) in the table of FIG. It is the graph shown for every thickness from which the resin material differs.

  That is, FIG. 5, FIG. 6, FIG. 7, and FIG. 8 use a resin material having a thickness of 5 mm, 4 mm, 3 mm, and 2 mm on a glass plate having a thickness of 0.7 mm. It is the graph which showed the relationship between 25% compressive stress (kPa) and the height (mm) of the convex part of a glass plate.

  Moreover, the line A in FIGS. 5 to 8 is a linear visualization of the data (◇ mark) obtained when the height (H3) of the step portion is set to 0.5 mm. A line B in FIG. 8 is a linear visualization of data (□ mark) obtained when the height (H3) of the stepped portion is set to 1.0 mm. These lines A and B are regression lines by the least square method.

As an example, referring to a wall covering material having a resin material with a 25% compressive stress of 50 kPa and a thickness of 5 mm described in the top row of Table 1, the step absorption rate when the height of the step portion is 0.5 mm is
H1 = 19.223
H2 = (19.233 + 19.196) /2≈19.215
H3 = 0.5
So
[1- (19.223-19.215) /0.5)] × 100≈98%
It becomes.

Further, referring to the wall covering material having a resin material with a 25% compressive stress of 200 kPa and a thickness of 2 mm in Table 1, the step absorption rate when the height of the step portion is 0.5 mm is
H1 = 16.171
H2 = (15.767 + 15.795) /2=15.781
H3 = 0.5
So
[1- (16.171-15.781) /0.5)] × 100 = 22%
It becomes.

  According to the test result 1 for a glass plate having a thickness of 0.5 mm or more and 0.9 mm or less, if the resin 25% compressive stress is 200 kPa or less, the thickness of the resin material is 2 mm or more. However, it was confirmed by experiments that a step absorption rate of 20% or more can be obtained.

  Also confirmed is a wall covering with a 25% compressive stress of 275 kPa, a resin material thickness of 5 mm, and a step absorption rate of 20% when the height of the step is 1.0 mm. did. In addition, a wall covering with a 25% compressive stress of 275 kPa, a resin material thickness of 4 mm, and a step absorption rate of 22% when the height of the step is 0.5 mm is confirmed. did.

<Test result 2>
Table 2 shown in FIG. 9 is a resin material having a thickness of 5 mm, 4 mm, and a resin material having a 25% compressive stress of 50 kPa, 110 kPa, 130 kPa, 200 kPa, 275 kPa, and 475 kPa using a glass plate having a thickness of 1.1 mm. It is the table | surface which showed the level | step difference absorption factor of a total of 24 wall covering materials with which the resin material of 3 mm and 2 mm was equipped. In FIG. 9, the step absorption rate when the height (H3) of the step portion 22B is set to 0.5 mm and 1.0 mm is shown for each of the 24 wall coverings.

  Further, the thickness of the glass plate 1.7 mm is a nominal thickness defined in Japanese Industrial Standard (JIS R 3202: 2011), and has a tolerance of ± 0.2 mm. That is, a glass plate having a thickness of 1.1 mm refers to a glass plate having a thickness of 0.9 mm to 1.3 mm.

  10 to 13 show the relationship between the resin 25% compressive stress (horizontal axis) and the height of the ridges of the wall covering (vertical axis (H1-H2)) in the table of FIG. It is the graph shown for every thickness from which the resin material differs.

  That is, FIG. 10, FIG. 11, FIG. 12, and FIG. 13 use a resin material having a thickness of 5 mm, 4 mm, 3 mm, and 2 mm on a glass plate having a thickness of 1.1 mm. It is the graph which showed the relationship between 25% compressive stress (kPa) and the height (mm) of the convex part of a glass plate. A line A in FIGS. 10 to 13 is a linear visualization of the data (◇ mark) obtained when the height (H3) of the step portion is set to 0.5 mm. A line B in FIG. 13 is a linear visualization of data (□ mark) obtained when the height (H3) of the step portion is set to 1.0 mm. These lines A and B are regression lines by the least square method.

  According to the test result 2 for a glass plate having a thickness of 0.9 mm or more and 1.3 mm or less, if the 25% compression stress is 200 kPa or less, even if the thickness of the resin material is 2 mm or more, 20% It was confirmed by experiment that the above step absorption rate can be obtained.

  Also confirmed is a wall covering that has a 25% compressive stress of 275 kPa, a resin material thickness of 5 mm, and a step absorption rate of 33% when the height of the step is 0.5 mm. did. Also confirmed is a wall covering that has a 25% compressive stress of 275 kPa, a resin material thickness of 4 mm, and a step absorption rate of 30% when the height of the step is 0.5 mm. did. Also confirmed is a wall covering with a 25% compressive stress of 275 kPa and a resin material thickness of 4 mm, and a step absorption rate of 23% when the height of the step is 1.0 mm. did. Also confirmed is a wall covering with a 25% compressive stress of 275 kPa and a resin material thickness of 3 mm, and a step absorption rate of 25% when the height of the step is 0.5 mm. did. Furthermore, a wall covering having a 25% compressive stress of 275 kPa and a resin material thickness of 3 mm and having a step height of 1.0 mm was also confirmed. .

<Test result 3>
Table 3 shown in FIG. 14 uses a glass plate having a thickness of 2.0 mm, and is a resin material having 25% compressive stress of 50 kPa, 110 kPa, 130 kPa, 200 kPa, 275 kPa, and 475 kPa, and each having a thickness of 5 mm, 4 mm, It is the table | surface which showed the level | step difference absorption factor of a total of 24 wall covering materials with which the resin material of 3 mm and 2 mm was equipped. In FIG. 14, the step absorption rate when the height (H3) of the step portion 22B is set to 0.5 mm and 1.0 mm is shown for each of the 24 wall coverings.

  Further, the thickness of the glass plate of 2.0 mm is a nominal thickness defined in Japanese Industrial Standard (JIS R 3202: 2011) and has a tolerance of ± 0.2 mm. That is, the glass plate having a thickness of 2.0 mm refers to a glass plate having a thickness of 1.8 mm to 2.2 mm.

  FIGS. 15 to 18 show the relationship between the 25% compression stress (horizontal axis) of the resin of the resin material and the height (vertical axis (H1-H2)) of the protruding portion of the wall covering in the list of FIG. It is the graph shown for every thickness from which the resin material differs.

  That is, FIG. 15, FIG. 16, FIG. 17, and FIG. 18 use a resin material of 5 mm, 4 mm, 3 mm, and 2 mm in thickness of a glass plate of 2.0 mm, respectively, in a total of 6 wall coverings, It is the graph which showed the relationship between 25% compressive stress (kPa) and the height (mm) of the convex part of a glass plate. A line A in FIGS. 15 to 18 is a linear visualization of the data (◇ mark) obtained when the height (H3) of the step portion is set to 0.5 mm. Line B in FIG. 18 is a linear visualization of the data (□ mark) obtained when the height (H3) of the step portion is set to 1.0 mm. These lines A and B are regression lines by the least square method.

  According to Test Result 3 for a glass plate having a thickness of 1.8 mm to 2.2 mm, if the resin 25% compressive stress is 275 kPa or less, the thickness of the resin material is 3 mm or more. However, it was confirmed by experiments that a step absorption rate of 20% or more can be obtained.

<Test result 4>
Table 4 shown in FIG. 19 is a resin material having a thickness of 5 mm, 4 mm, and a resin material having a 25% compressive stress of 50 kPa, 110 kPa, 130 kPa, 200 kPa, 275 kPa, and 475 kPa using a glass plate having a thickness of 3.0 mm. It is the table | surface which showed the level | step difference absorption factor of a total of 24 wall covering materials with which the resin material of 3 mm and 2 mm was equipped. Further, in FIG. 19, the step absorption rate when the height (H3) of the step portion 22B is set to 0.5 mm and 1.0 mm is shown for every 24 wall coverings.

  Further, the thickness of the glass plate of 3.0 mm is a nominal thickness defined in Japanese Industrial Standard (JIS R 3202: 2011), and has a tolerance of ± 0.2 mm. That is, a glass plate having a thickness of 3.0 mm refers to a glass plate having a thickness of 2.8 mm or more and 3.2 mm or less.

  20 to 23 show the relationship between the resin 25% compressive stress (horizontal axis) and the height of the ridges of the wall covering (vertical axis (H1-H2)) in the table of FIG. It is the graph shown for every thickness from which the resin material differs.

  That is, FIG. 20, FIG. 21, FIG. 22 and FIG. 23 use a resin material having a thickness of 5 mm, 4 mm, 3 mm, and 2 mm on a glass plate having a thickness of 3.0 mm. It is the graph which showed the relationship between 25% compressive stress (kPa) and the height (mm) of the convex part of a glass plate. Also, line A in FIGS. 20 to 23 is a linear visualization of the data (◇ mark) obtained when the height (H3) of the step portion is set to 0.5 mm. A line B in FIG. 23 is a linear visualization of data (□ mark) obtained when the height (H3) of the stepped portion is set to 1.0 mm. These lines A and B are regression lines by the least square method.

  According to the test result 4 for a glass plate having a thickness of 2.8 mm or more and 3.2 mm or less, if the 25% compressive stress is 475 kPa or less, even if the thickness of the resin material is 4 mm or more, 20% It was confirmed by experiment that the above step absorption rate can be obtained.

  Also confirmed is a wall covering that has a 25% compressive stress of 475 kPa, a resin material thickness of 3 mm, and a step absorption rate of 25% when the height of the step is 0.5 mm. did.

<Summary>
Although it is clear from the test results 1 to 4, since the rigidity of the glass plate increases as the thickness of the glass plate increases, the deformation rate of the entire wall covering calculated by (H1-H2) / H3 is high. There was a tendency for the step absorption rate to increase and to decrease. In other words, as the thickness of the glass plate decreases, the rigidity of the glass plate decreases, so that the deformation rate of the wall covering calculated by (H1-H2) / H3 increases, and the step absorption rate decreases. It has been found.

  On the other hand, in the resin material, as the 25% compressive stress increases, the hardness of the resin material increases, so that the step absorption rate tends to decrease. In other words, it has been found that, in the resin material, as the 25% compressive stress decreases, the flexibility of the resin material increases, so that the step absorption rate increases.

  In addition, as a resin material of the test body 20, a resin having 25% compressive stress of 275 kPa and 475 kPa is used, and a resin material having a compressive stress therebetween is not used, but it is considered from lines A and B in FIG. It was also found that 400 kPa can be defined as the upper limit value of 25% compressive stress at which the step absorption rate satisfies 20% or more.

  Furthermore, based on the test results 1 to 4, the thickness of the glass plate is 0.5 mm or more and less than 3.2 mm, the thickness of the resin material is 2 mm or more and 5 mm or less, and the 25% compression stress of the resin resin is 200 kPa. The following wall covering was found to be a preferred embodiment.

  Further, based on the test results 2 to 4, the thickness of the glass plate is 0.9 mm or more and 3.2 mm or less, the thickness of the resin material is 2 mm or more and 5 mm or less, and the resin 25% compressive stress is 200 kPa. The following wall covering was found to be a preferred embodiment. This is the form of the wall covering when the step absorption rate is set to 30% or more. As described above, if the step absorption rate is 30% or more, it is based on the fact that the distortion of the image reflected on the wall covering can be further suppressed.

  Further, based on the test results 2 to 4, the thickness of the glass plate is 0.9 mm or more and 3.2 mm or less, the thickness of the resin material is 3 mm or more and 5 mm or less, and the resin 25% compressive stress is 300 kPa. The following wall covering was found to be a preferred embodiment.

[Visible light transmittance of resin material 16]
In the conventional mirror method, there is a gap between the glass plate that is the wall covering and the wall surface, and the shadow of the adhesive is raised by the light transmitted through the glass plate, the glass edge, and the light transmitted through the gap. It can happen. In addition, when the design layer applied to the surface of the glass plate or pasted with a film has transparency, a phenomenon may occur in which the adhesive portion is exposed to a different color due to the influence of the reflective color tone of the adhesive.

  Here, since the resin material 16 of the wall covering material of the embodiment is affixed to the entire glass surface of the glass plate 12 and is a homogeneous material, the above phenomenon does not occur.

  However, if there is a gap in the wall surface or if a hole for inserting the wiring cord is provided in the wall surface, the light from the light source disposed on the back side of the wall surface is transmitted through the gap or hole to the resin material 16. The above phenomenon may occur.

  Therefore, in order to prevent the above-described phenomenon due to the gaps or holes in the wall surface, the visible light transmittance of the resin material 16 is defined by the visible light transmittance test shown in FIGS.

[Visible light transmittance test]
FIG. 24A is a top view schematically showing the contents of the visible light transmittance test of the resin material 16, and FIG. 24B is a side view of FIG. FIG. 25 is a table showing the evaluation results of the visible light transmittance test.

  As shown in FIG. 24, in the visible light transmittance test of this case, a glass plate having a visible light transmittance of 5% is used as the glass plate 12 of the wall covering 10, and visible light is transmitted to the back surface (design layer side) of the glass plate 12. A resin material 16 having an adjusted rate was attached to the entire surface, and illumination was applied through a gap 28 having a width of 10 mm formed on the base material 26 to evaluate the influence of light leakage on the design layer.

  Nineteen (No. 1 to No. 19) wall coverings 10 were manufactured as test samples, and the visible light transmittance of the resin member 16 of these wall coverings 10 was in the range of 0.8% to 26.3%. Adjusted. Further, a fluorescent lamp 30 of day white 40 W was used as the illuminator, and the gap 28 was illuminated from a position 30 cm away from the back side of the base material 26.

〔Evaluation results〕
Evaluation was divided into A, B, and C for evaluation. The A evaluation is “no light leakage can be confirmed”, the B evaluation is “no light leakage can be confirmed unless carefully checked”, and the C evaluation is “the light leakage can be confirmed”. did.

  As a result, as shown in FIG. 25, when the resin material 16 having a visible light transmittance of 10% or less is used, light leakage can be prevented even when light leaks from the back surface of the base material 26. . Thereby, the designability of the wall covering 10 can be maintained.

  DESCRIPTION OF SYMBOLS 10 ... Wall covering, 12 ... Glass plate, 14 ... Design layer, 16 ... Resin material, 20 ... Test body, 22 ... Gypsum board, 22A ... Flat part, 22B ... Step part, 24 ... Clip, 26 ... Base material, 28 ... Gap, 30 ... Fluorescent lamp, 32 ... Projection, 34 ... Parting material, 36 ... Base material, 38 ... Parting material, 38A ... Side

Claims (7)

A brittle plate-like material having design properties, and a plate-like resin material provided on one surface of the plate-like material,
The thickness of the plate-like material is 0.5 mm or more and 3.2 mm or less,
The resin material has a thickness of 2 mm or more and 8 mm or less,
25% compression stress of the resin of the resin material is 400 kPa or less,
A wall covering material having a step absorption rate calculated by the following test method of 20% or more.
〔Test method〕
A ground model having a flat portion and a step portion provided in the flat portion, the height of the flat portion being not less than 0.5 mm and not more than 1.0 mm, and a width of 5 mm. Prepare the body and prepare the rectangular wall covering material with a side of 300 mm,
The resin material side of the wall covering material is placed across the flat portion and the step portion of the base model body, and at a position spaced by 50 mm on both sides across the step portion. The wall covering material and the base model body are sandwiched by a sandwiching member with a compressive stress of 10% or less,
At this time,
A surface opposite to the surface on which the wall covering material of the base model body is placed is an A surface,
The surface on the plate-like material side of the wall covering material placed on the step portion of the base model body is a B surface,
The surface on the plate-like material side of the edge of the wall covering material placed on the flat part of the base model body is a C surface,
The height from the A surface to the B surface is H1,
The height from the A plane to the C plane is H2,
When the height from the flat portion to the step portion of the base model body is H3, the step absorption rate calculated by the following equation (1) is 20% or more.
[1- (H1-H2) / H3] × 100 (1) The thickness of the plate-like material is 0.5 mm or more and less than 3.2 mm,
The thickness of the resin material is 2 mm or more and 5 mm or less,
25% compressive stress of the resin of the resin material is 200 kPa or less,
The wall covering material according to claim 1. The thickness of the plate-like material is 0.9 mm or more and 3.2 mm or less,
The thickness of the resin material is 2 mm or more and 5 mm or less,
25% compressive stress of the resin of the resin material is 200 kPa or less,
The step absorption rate is 30% or more,
The wall covering material according to claim 1. The thickness of the plate-like material is 0.9 mm or more and 3.2 mm or less,
The resin material has a thickness of 3 mm or more and 5 mm or less,
25% compressive stress of the resin of the resin material is 300 kPa or less,
The wall covering material according to claim 1.   The wall covering material according to any one of claims 1 to 4, wherein a visible light transmittance of the resin material is 10% or less.   The wall covering material includes a parting material having a projecting part, and the projecting part of the parting material is sandwiched between an inner wall side surface of the building of the resin material and an interface of a base material of the inner wall of the building. The wall covering material according to any one of claims 1 to 5.   The wall material according to any one of claims 1 to 6, wherein the plate-like material is provided by a design layer having the design property interposed between the plate material and the resin material.

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