JP6020873B2 - Flooring - Google Patents

Description

  The present invention relates to a floor material laid in a place where a person walks.

  A striped steel plate (checker plate) is known as a metal floor material laid on a place where a person walks, for example, a platform of a road or a station, a floor surface or a passage of a building. Such a striped steel sheet is manufactured by pressing a steel sheet to form protrusions or hot rolling (see, for example, Patent Document 1).

JP 2000-254711 A

By the way, conventional metal floors such as striped steel plates and floors laid with floor materials such as porcelain tiles with a smooth surface are not effective in suppressing slipping, especially when wet due to rain. There was a problem that it was easy.
Then, an object of this invention is to provide the flooring which is hard to slip.

In order to achieve the above-described object, the flooring of the present invention is a flooring in which a mesh-like groove is formed by etching on the surface of a metal plate, and the maximum length of the convex region that is convex with respect to the groove is, 10 mm or less, an etching surface is formed on the surface of the groove, an etching surface is not formed on the upper surface of the convex region corresponding to the surface of the metal plate, and the convex region is In a plan view, the length of one side is a square shape of 3 mm .

  According to such a flooring, the edge portion of the convex portion formed by etching is moderate as compared with the case where the convex portion is formed by pressing a metal plate or hot rolling. A corner is formed. And in the flooring of this invention, since this corner becomes a catch, compared with the conventional flooring, a slip can be suppressed. Moreover, since the groove | channel is formed in mesh shape, even if a person approachs with respect to a flooring from which direction, slip can be suppressed.

  In the floor material described above, the width of the groove is preferably smaller than the interval between adjacent grooves. According to this, since the area of the region of the metal plate where the groove is formed, that is, the region corroded by etching can be reduced, the flooring can be manufactured easily and in a relatively short time. In addition, since the corrosion time (etching time) can be shortened, an appropriate angle can be left at the edge of the convex portion.

In here, the maximum length of the convex region, among the protruding area shall be referred to the length of the longest portion. For example, when the convex region is substantially square, the maximum length is a diagonal length, and when the convex region is substantially equilateral triangle, the maximum length is one side. Further, when the convex region is substantially circular, the maximum length is a diameter, and when the convex region is substantially elliptical, the maximum length is the length of the major axis.

Moreover, in each of the floor materials described above, the depth of the groove is preferably 0.07 to 0.27 mm. Moreover, in each above-mentioned flooring, the said groove | channel can be set as the structure which is a grid | lattice form, for example. Further, in each of the above-mentioned flooring materials, it is desirable that the slip resistance coefficient in a wet state measured according to the slidability test of JIS A1454 is 0.67 or more.

  According to the present invention, since an appropriate angle formed at the edge portion of the convex portion becomes a catch, slipping can be suppressed as compared with a conventional flooring material.

It is the perspective view (a) and enlarged perspective view (b) which show the use condition of the flooring which concerns on one Embodiment. It is the top view (a) and sectional drawing (b) of a flooring. It is explanatory drawing (a)-(d) of the manufacturing method of a flooring. It is a top view (a)-(d) of the flooring concerning a modification.

Next, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate.
As shown to Fig.1 (a), the flooring 1 which concerns on embodiment is mainly used by laying in order in the place where a person walks. As shown in FIG. 1B, the flooring 1 is formed by forming a mesh-like groove 20 by etching on the surface (upper surface) of a stainless steel plate 10 as an example of a metal plate. It has a plurality of convex regions (convex portions 30) to be convex surfaces.

  The stainless steel plate 10 is formed in a tile shape having a rectangular shape in plan view. In the present invention, the vertical and horizontal dimensions of the stainless steel plate 10 are not particularly limited, and may be, for example, 300 mm × 300 mm, 304 mm × 350 mm, 609 mm × 650 mm, 1000 mm × 350 mm, 1219 mm × 350 mm, 4000 mm × 1000 mm, and the like.

  The thickness T of the stainless steel plate 10 (see FIG. 2B) is not particularly limited as long as it can secure the strength of the flooring 1 even when a groove 20 having a depth D described later is formed. However, it is desirable that it is 1-5 mm, for example. Incidentally, in this embodiment, the thickness T of the stainless steel plate 10 is about 1.5 mm.

  In the present invention, the material (chemical composition) of the stainless steel plate 10 is not particularly limited as long as the groove 20 can be formed by etching as will be described later. For example, SUS304 or the like can be used.

  As shown in FIGS. 2A and 2B, in this embodiment, the grooves 20 are formed in a lattice shape along the vertical and horizontal edges of the stainless steel plate 10. Thereby, even if a pedestrian approaches from any one of the up-down direction, the left-right direction, and the diagonal direction of Fig.2 (a), a slip can be suppressed reliably. The grooves 20 are connected to each other and formed up to the end of the stainless steel plate 10.

  The width W of the groove 20 is smaller than the interval S between adjacent grooves 20 in the vertical direction or the horizontal direction. More specifically, the width W of the groove 20 is desirably 1 to 10 mm. Incidentally, in this embodiment, the width W of the groove 20 is about 1 mm, and the interval S between adjacent grooves 20 is about 3 mm.

  By making the width W of the groove 20 smaller than the interval S, the region of the surface of the stainless steel plate 10 where the groove 20 is formed (the area of the region corroded by etching) can be reduced. Is easy and relatively short. In addition, since the corrosion time (etching time) can be shortened, an appropriate corner can be left on the edge portion 31 of the convex portion 30 as described later.

The depth D (depth of the deepest portion) of the groove 20 can be appropriately set depending on the use of the flooring 1. The depth D of the groove 20 is sufficient to be about 0.07 to 0.27 mm when used for general walking surfaces such as roads, sidewalks, station platforms, building floors and passages. It is. Moreover, when using it for the floor of a comparatively slippery environment, such as a cooking place using oil, it is good also as 0.22 mm or more, for example, 0.32 mm. Incidentally, in this embodiment, the depth D of the groove 20 is about 0.27 mm.

  In the flooring 1, the slip suppression effect can be adjusted by appropriately setting the depth D and width W of the grooves 20, the interval S between adjacent grooves 20, and the shape formed by the grooves 20. . Moreover, the shape which the groove | channel 20 makes can also obtain the effect which improves aesthetics.

  In the present embodiment, the convex portion 30 has a substantially square shape in plan view. At the edge portion 31 of the convex portion 30, an appropriate angle having a substantially right-angle shape in cross section is formed by etching.

  The length of one side of the convex portion 30 is substantially equal to the interval S between the adjacent grooves 20 (approximately 3 mm in this embodiment). Therefore, the maximum length L of the convex portion 30 (the length of the diagonal line) is approximately 4.2 mm. As for the maximum length of the convex part 30, it is desirable that it is 10 mm or less. More specifically, the maximum length of the convex portion 30 is about 5.7 to 10 mm (approximately equivalent to the length of one side of the convex portion 30) when used for a general walking surface such as a road or a sidewalk. 4-7 mm) is sufficient. Moreover, when using it for the floor of a relatively slippery environment, such as a cooking place, it is good also as less than 5.7 mm.

  In the flooring 1, since the edge part 31 in which an appropriate angle | corner was formed becomes a catch, it becomes possible to suppress slip | sliding reliably not only in the dry state but especially in the wet state. Supplementally, in the flooring 1, when it gets wet, water enters the groove 20, so that it is difficult to accumulate on the surface of the flooring 1. More specifically, since the grooves 20 are connected to each other and are formed up to the end of the stainless steel plate 10, the water that has entered the grooves 20 can be drained. Accordingly, the effect of the edge portion 31 can be effectively obtained even in a wet state.

  In addition, in order to suppress slipping on the surface (upper surface) of the convex portion 30, the surface of the convex portion 30 may be a rough surface, or one or a plurality of concave portions may be formed on the surface of the convex portion 30 by etching. Good. Further, by appropriately setting the width W and the depth D of the groove 20, the drainage effect of the groove 20 that is connected to each other and formed to the end of the stainless steel plate 10 can be enhanced.

  The flooring 1 described above can be suitably used in places where people walk, specifically on roads and sidewalks, station platforms, floors and passages of buildings, steps on stairs, vehicles, and the like. it can. In addition, since it is difficult to slip even when wet, it can be suitably used for a floor of a kitchen, a washing place of a bath, the bottom of a bathtub, a poolside, and the like. Further, since the flooring 1 is formed in a tile shape, it can be laid by pasting directly on an existing floor surface, for example, a slippery porcelain tile floor. Furthermore, the flooring 1 made of the stainless steel plate 10 can be used as a lid for a side groove, an expansion joint for a walking surface, a slope for eliminating a step laid at the entrance of a building, or the like by processing appropriately. .

Next, the outline of the manufacturing method of the flooring 1 according to the embodiment will be described.
First, as shown in FIG. 3A, a mask 40 is formed on the surface 11 of the stainless steel plate 10 on a surface to be a convex region (convex portion 30) by a known method, for example, silk printing (mask). Forming step).

  Next, as shown in FIG. 3B, the stainless steel plate 10 with the mask 40 formed on the surface 11 is immersed in an etching solution. Thereby, as shown in FIG.3 (c), the recessed part (groove 20) can be formed in the part in which the mask 40 is not formed among the surfaces 11 of the stainless steel plate 10 (recessed part formation process).

  In this step, the etching solution is not particularly limited as long as it can etch the stainless steel plate 10. For example, an aqueous solution containing iron (III) chloride can be used. Moreover, after the stainless steel plate 10 is immersed in the etching solution, the etching solution may be stirred or the reaction vessel may be shaken. Thereby, since the surface 11 (part in which the groove | channel 20 is formed) of the stainless steel plate 10 will always touch fresh etching liquid, the reactivity (productivity of the flooring 1) can be improved.

  The depth D of the groove 20 can be adjusted mainly by changing the time during which the stainless steel plate 10 is immersed in the etching solution (etching processing time), the concentration of the etching solution, and the like. Further, it is desirable that the etching processing temperature be substantially constant.

  After performing the etching process for a predetermined time, the stainless steel plate 10 is taken out from the etching solution, and as shown in FIG. 3D, the mask 40 is removed from the surface 11 of the stainless steel plate 10 by a known method (mask removal process). . Thereby, the flooring 1 can be manufactured. In addition, the flooring 1 may be manufactured by forming the groove 20 after the stainless steel plate 10 is previously set to predetermined vertical and horizontal dimensions, or may be cut to a predetermined vertical and horizontal dimension after the flooring 1 is manufactured. Good.

  In the flooring 1 manufactured as described above, an appropriate corner having a substantially right-angle cross-sectional view is formed on the edge portion 31 of the convex portion 30 by the etching process. Therefore, the flooring 1 is able to suppress slippage even when the flooring 1 is wet as well as the edge 31 of the convex portion 30 in the dry state. Further, by forming the groove 20 by etching, the flooring 1 having the groove 20 having a small width W can be manufactured relatively easily.

  Incidentally, when a convex part is formed by a method of pressing a stainless steel plate or hot rolling, the edge part of the convex part becomes a curved surface, and therefore, a high slip like the flooring 1 of the present invention. The suppression effect cannot be obtained. Moreover, it is not easy to form a groove having a small width in press working or hot rolling.

  In the manufacturing method described above, a step of roughing the surface 11 of the stainless steel plate 10 may be added before forming the mask 40 (before the mask forming step), if necessary. According to this, the surface of the convex part 30 of the flooring 1 can be made difficult to slip.

  Further, after removing the mask 40 (after the mask removing step), a step of coloring the groove 20 and the surface of the convex portion 30 may be added. Specifically, for example, when coloring in the groove 20, first, a primer (primer) is applied to the uneven surface of the flooring 1, then a paint is applied to the uneven surface to which the primer is applied, and then dried. It can be realized by scraping the paint and primer on the surface of the convex portion 30.

  According to this, the effect which attracts attention to the flooring 1 and the effect which improves the beauty | look of the flooring 1 more can be acquired. Further, by putting a color in the groove 20, it becomes possible to adjust (finely adjust) the depth D of the groove 20, that is, the slip suppression effect. Furthermore, since the shape of the edge part 31 of the convex part 30 changes a little by putting a color in the groove | channel 20, it becomes possible to adjust a slip suppression effect also by this.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of this invention.

  In the embodiment, each groove 20 is formed in a lattice shape along the vertical and horizontal edges of the stainless steel plate 10, but the present invention is not limited to this, for example, as shown in FIG. Each groove 20 may be formed in a lattice shape extending in a direction inclined approximately 45 degrees with respect to the vertical and horizontal edges of the stainless steel plate 10.

  In the said embodiment, although the convex part 30 had comprised planar view substantially square shape, this invention is not limited to this. For example, as shown in FIG. 4B, the convex portion 30 may have a substantially regular triangular shape, or as shown in FIG. 4C, the convex portion 30 has a substantially regular hexagonal shape. Alternatively, as shown in FIG. 4D, the convex portion 30 may have a substantially circular shape. Further, although not shown, the convex portion may have a substantially rectangular shape, a substantially oval shape, or a substantially oval shape. In addition, the planar shape of a convex part can be easily changed by changing the shape of the mask formed in the surface of a stainless steel plate (metal plate) in the manufacturing process of a flooring.

  In the embodiment and the embodiment shown in FIG. 4, the mesh shape of the grooves is a regular shape, but the present invention is not limited to this. That is, the mesh shape of the groove may be an irregular shape.

  Although the manufacturing method of the flooring 1 described in the embodiment includes a mask formation step, a recess formation step, and a mask removal step, the present invention is not limited to this. For example, the mask removal step is performed. It may be omitted. Incidentally, when the mask is colored, the surface of the convex portion can be colored without adding a new step by omitting the mask removing step (leaving the mask).

  In the said embodiment, although the stainless plate 10 was employ | adopted as a metal plate, this invention is not limited to this, For example, you may employ | adopt an aluminum plate, a copper plate, a brass plate, a steel plate, etc. In addition, the specific method of etching process, etching liquid, etc. will not be specifically limited if a mesh-like groove | channel can be formed in the employ | adopted metal plate. Incidentally, when an aluminum plate is adopted as the metal plate, anodizing may be performed as necessary after forming a mesh-like groove by etching.

  Next, examples where the effects of the present invention have been confirmed will be described.

[Test 1]
First, the effect of this invention was confirmed regarding the depth of a groove | channel. Specifically, for the flooring material (test piece) according to the present invention in which the groove depth was 0.07 mm or 0.27 mm, the slip property was evaluated by the following conditions and test method. The results are shown in Table 1.

<Specimen>
Material: SUS304
Dimensions: 150mm x 300mm x 3mm
Convex part: 3 mm × 3 mm square shape (maximum length: 4.2 mm)
Groove width: 1mm
Groove depth: 0.07 mm, 0.27 mm (one each)
Remarks: The test piece was allowed to stand for 24 hours or more in a test chamber having a temperature of 20 ± 2 ° C. and a relative humidity of 65 ± 10%, and then subjected to the test.

<Test method>
JIS A1454 (Polymer-based tension flooring test method) 6.14 The test was carried out in accordance with a slip property test. The test conditions are as follows.
1. Sliding piece: Hard rubber sheet; hardness (A type) 78, thickness 5 mm
2. Surface state of test piece: Dry state; Cleaned and dried state.
Wet state: State in which tap water is sprinkled at a rate of 400 g / m ² .
3. Direction of specimen: Length direction of specimen.
4). Formula for calculating slip resistance coefficient: C.I. S. R = Pmax / W
C. S. R: slip resistance coefficient
Pmax: Maximum tensile load [N]
W: Vertical load (785N)

  As shown in Table 1, the floor material used in this test has a slip resistance coefficient of 1.04 in the dry state and 0.85 in the wet state when the groove depth is 0.07 mm. When the thickness was 0.27 mm, the slip resistance coefficient was 1.08 in the dry state and 0.85 in the wet state. This is the lower limit of the floor slip resistance coefficient prescribed by the ordinance of the prefecture, for example, even in a wet state (in the case of Tokyo, the part walking with lower legs is 0.4, walking with bare feet) The part greatly exceeds 0.45). Therefore, it can be said that the flooring of the present invention is sufficiently slippery not only in a dry state but also in a wet state. Further, the floor material used in this test has a small difference between the slip resistance coefficient in the dry state and the slip resistance coefficient in the wet state, which is about 0.2.

  In addition, the floor material used for the main test with the maximum length of the convex part of 4.2 mm has a slip resistance coefficient that is too large, so it is particularly suitable for the floor of the kitchen, the washing place of the bath, the bottom of the bathtub, and the pool side. It is desirable to use it.

[Test 2]
Next, the effect of this invention was confirmed regarding the maximum length of a convex part. Specifically, for the flooring (test piece) according to the present invention in which the maximum length of the convex portion was 5.7 mm or 10.0 mm, the slip property was evaluated by the same test method as in Test 1 described above. The results are shown in Table 2 (in addition, the result of the maximum length of 4.2 mm is the result of the test 1 described above).

<Specimen>
Material: SUS304
Dimensions: 150mm x 300mm x 3mm
Maximum length of convex part: 5.7 mm (square shape of 4 mm × 4 mm)
10.0mm (7mm x 7mm square shape)
(One for each)
Groove width: 1mm
Groove depth: 0.07 mm
Remarks: The test piece was allowed to stand for 24 hours or more in a test chamber having a temperature of 20 ± 2 ° C. and a relative humidity of 65 ± 10%, and then subjected to the test.

  As shown in Table 2, the flooring material used in this test had a slip resistance coefficient of 0.70 in the dry state and 0.000 in the wet state in both cases where the maximum length was 5.7 mm and 10.0 mm. 67. This is about 1.5 times the lower limit (for example, 0.4 to 0.45) of the floor slip resistance coefficient defined by the above-mentioned regulations even in a wet state. Therefore, in the flooring of the present invention, if the maximum length of the convex portion is about 5.7 to 10 mm (the length of one side of the square-shaped convex portion is 4 to 7 mm), it is of course a wet state in a dry state. However, it can be used suitably for general walking surfaces such as roads, sidewalks, station platforms, building floors and passages, stair treads, and vehicle steps. It can be said.

  In addition, the floor material used in this test has a particularly small difference between the slip resistance coefficient in the dry state and the slip resistance coefficient in the wet state, which is 0.03. Even if it is wet, there is little risk of slipping or tripping.

  Although not shown in Table 2, when the maximum length of the convex portion is 14.1 mm (10 mm × 10 mm square shape), the slip resistance coefficient in the dry state is a value indicating that the slip resistance is not sufficiently slippery. However, the slip resistance coefficient in the wet state was a value indicating that the slip suppression effect was small as compared with the other cases shown in Table 2. However, even such a flooring can be used satisfactorily as a non-wetting walking surface, for example, a floor surface or a passage in a room (inside a building).

DESCRIPTION OF SYMBOLS 1 Flooring material 10 Stainless steel plate 11 Surface 20 Groove 30 Convex part 31 Edge part D Depth L Maximum length S Interval W Width

Claims (5)

It is a flooring in which mesh-like grooves are formed by etching on the surface of a metal plate,
The maximum length of the convex region that is convex with respect to the groove is 10 mm or less,
An etching surface is formed on the surface of the groove, and no etching surface is formed on the upper surface of the convex region corresponding to the surface of the metal plate ,
The convex region has a square shape having a side length of 3 mm in plan view .   The flooring according to claim 1, wherein a width of the groove is smaller than an interval between adjacent grooves.   The depth of the said groove | channel is 0.07-0.27 mm, The flooring of Claim 1 or Claim 2 characterized by the above-mentioned.   The flooring according to any one of claims 1 to 3, wherein the groove has a lattice shape.   The flooring material according to any one of claims 1 to 4, wherein a slip resistance coefficient in a wet state measured according to a slidability test of JIS A1454 is 0.67 or more.

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