JPH0784641B2 - Decorative panel building material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to walls, pillars, ceilings, floors, doors, handrails inside and outside a building,
Decorative panel made of stainless steel used for covering and decorating the surface of freshly-worn ones or the like and having a beautiful color tone without scratches [Prior Art] Colored stainless steel sheet as a building material panel for construction Processed products are popular. This is a panel material in which a colored coating of various colors is applied to at least one surface of a stainless steel plate with or without an uneven pattern. This colored panel material is used for walls, pillars, ceilings in various buildings and urban structures.
It is applied to the surface of floors, doors, railings, railings or the like to give them aesthetics and durability.

This stainless steel decorative panel can be made in any size, but usually a decorative panel with a smaller surface area than the large surface of the material to be deposited is used. That is, the intended material surface is decorated by adhering a number of small unitized decorative panels adjacent to the large material surface. In order to facilitate the pasting work, it is usual to form a short bent piece along each side of each decorative panel. This bent piece consists of a short side piece bent almost at right angles from the decorative surface to the back side, and the tip edge of this side piece is bent at an angle of about 90 degrees so that it is parallel to the decorative surface again. It usually consists of an overhanging piece.
Then, on the surface of the material to be adhered, the overhanging piece of one decorative panel and the overhanging piece of the other decorative panel are overlapped, and this overlapping part is applied to the material surface by using locking means such as tacking. Install the decorative panel. Therefore, the decorative panel made of stainless steel should have a part that is bent at about 90 degrees on its side to facilitate the installation work on the material surface and ensure the stability of the installation work. is necessary.

In the conventional stainless steel decorative panel that has been subjected to such a bending process, a colored coating film is formed on the surface of the stainless steel plate by chemical conversion treatment or painting treatment, or various plating layers are formed, and It was subjected to such a bending process.

[Object of the Invention]

An object of the present invention is to provide a stainless steel decorative panel whose color does not change with time and is less likely to be scratched than any conventionally known stainless steel decorative panel whose surface is subjected to chemical conversion treatment, painting treatment or plating treatment. To do.

More specifically, it is an object of the present invention to have a color according to the designer's request, and whatever the color is, the color thereof does not change with time as compared to any conventionally known decorative panel made of stainless steel and has a flaw. It is to provide a decorative panel made of stainless steel that is resistant to semi-permanent use, which can prevent the deterioration of quality and the occurrence of rust in the above-mentioned bent portion as well as being difficult to attach.

[Summary of Invention]

According to the present invention, the base material is made of a stainless steel plate, at least one surface of the base material stainless steel plate is coated with a colored coat, and the total thickness of the base material and the colored coat is integrated with a bending angle of 90 degrees or more. Walls, columns, ceilings, floors inside and outside the building, which have bent parts that have been bent in a horizontal direction on the sides,
In a decorative panel used for decorating the surface of a door, a handrail, a railing, or the like, the coating of the colored coat contains 30 to 60 at.% Of titanium, 3
0 to 60 at.% Aluminum and N (at.%) / [Ti
(At.%) + Al (at.%)] In the range of 0.6 to 1.0, the thickness substantially consisting of nitrogen is 5 μm or less, preferably 0.1 μm.
It is a thin layer having a thickness of 3 μm or less, and this thin layer film is coated on the surface of the stainless steel plate base material by a sputtering method (sputter ion plating process), and a nitride of titanium and aluminum is contained in the film. The present invention provides a decorative panel building material, which is characterized in that it is integrally formed.

Further, in the present invention, the coating of the colored coat is 30 to 60 at.% Titanium, 30 to 60 at.% Aluminum, N (at.%) / [T
i (at.%) + Al (at.%)] ratio of nitrogen in the range of 0.6 to 1.0, and C (at.%) / [Ti (at.%) + Al (at.
%)] Ratio of 0.25 or less, the thickness of the actual thickness is 5μ
m or less, preferably 0.1 μm or more and 3 μm or less. This thin layer coating is formed on the surface of the stainless steel plate base material by a sputtering method, and the carbonitride of titanium and aluminum is The present invention provides a decorative panel building material characterized by being integrally formed in a film.

In the decorative panel according to the present invention, the coating of the colored coat deposited on the surface of the stainless steel plate is substantially composed of three elements of titanium, aluminum and nitrogen, and the nitrogen content in the above range depends on the difference in the nitrogen content. The color tone is different. That is, various color tones are provided by specifying the nitrogen content in the range. The decorative panel of the present invention has a red line, a brown line,
It has all beautiful colors such as green, blue, purple and golden colors. The addition of carbon to the color coat can add an additional black tint to the color obtained by determining the nitrogen content. The decorative panel according to the present invention is not the interference color (that is, the color tone is different depending on the thickness of the film) as in the case where the conventional color coat of the chemical conversion film or the coating film is applied, but the color coat itself is It has a natural color, and if the thickness of the colored coat is 0.1 μm or more, the color tone does not substantially change due to the change in the thickness.

[Detailed Description of the Invention]

The decorative panel building material of the present invention is formed by forming a colored coat substantially consisting of three elements of titanium, aluminum and nitrogen on the surface of a stainless steel substrate by using a sputtering method, and then bending it at 90 degrees or more with this colored coat. It is a panel in which a bent portion is formed in a side portion by processing an angle. Sputtering is carried out by a known technique, but when using Ti-Al alloy as a target,
It was found that by adjusting the N ₂ gas concentration in the atmosphere, it is possible to apply a colored coat with the intended color tone. For example, the target is a Ti-Al alloy (for example, 50 at.% Ti-50 at.% Al alloy) created by hot pressing, and the atmosphere inside the apparatus is N ₂ and Ar, and in some cases, C _n H _m gas. As the atmosphere of the added mixed gas, 10 ^-2 〜
While maintaining a reduced pressure of -10 ^-4 Torr., The target voltage is kept at -150 V to -520 V, and particles ejected from the target are deposited on the steel plate surface of the base material. At that time, N ₂ gas, and further C _n H _m gas are introduced into the device at a predetermined flow rate while operating the vacuum device so as to maintain a predetermined reduced pressure. It was found that a dry coating film of various colors can be formed on the surface of the base steel sheet by control. When a Ti-Al alloy is used as the target and the atmosphere of Ar and N ₂ gas is maintained, it is only necessary to adjust the N ₂ gas concentration to achieve various types such as red, brown, green, blue and purple systems. You can freely adjust to things. The use of Ti-Al alloy target, Ar, when in the case to keep the atmosphere of N ₂ and C _n H _m gas adjusts the N ₂ gas concentration and the C _n H _m gas concentration, a further slug to each color of the It can be adjusted to a tinged color. These colors and tones are the same as those used in limited fields such as wristwatch exteriors, spectacle frames, and accessories, and are the golden color of titanium nitride dry coating film or aluminum nitride only dry coating film. The metal color system (metal color like stainless steel) is almost different.

The color coat of the dry coating film according to the present invention comprises:
When the atmosphere gas is N ₂ and Ar, at least titanium and aluminum nitrides are present in the film as a single body with the three elements of titanium, aluminum and nitrogen as essential components. The dry coating film formed by mixing C _n H _m gas contains titanium, aluminum, nitrogen and carbon as the essential components, and titanium and aluminum carbonitrides are completely integrated in the film. Is what you are doing. Then, different colors are emitted depending on the amount ratio of titanium nitride and aluminum nitride, the amount of compound nitrogen, and the amount and morphology of carbonitrides of titanium and aluminum, which are completely integrated in the dry coating film.

The colored coat comprising the dry coating film according to the present invention has a composition range of elements constituting the dry coat of 30 to 60 at.
% Titanium, 30-60 at.% Aluminum, N (at.
%) / [Ti (at.%) + Al (at.%)] In the range of 0.6 to 1.0, and in some cases C (at.%) / [Ti (a.
t.%) + Al (at.%)] is carbon of 0.25 or less.
It was found that the dry coating film itself can be formed outside this range, but it is not possible to stably obtain a color with a design property required for a decorative panel. It is speculated that this is because some of the nitrides or carbonitrides forming the colored coat locally form compounds having a special composition ratio.

The decorative panel building material of the present invention has at least one bent portion integrally bent at a bending angle of 90 degrees or more at the side portion. It is desirable to have a colored coat on the surface of the bent piece as well, as the bent piece may also be part of the decoration. Therefore, it is necessary to bend the steel sheet at a bending angle of 90 degrees or more in the portion where the colored coat exists. When a crack that penetrates the front and back of the colored coat is generated in the colored coat during the bending process, the colored coat may be partially peeled off at the corner portion or rust may be generated on the substrate through the crack. Therefore, cracks that reduce the product value of the decorative panel should not occur in the colored coat during this 90-degree bending process. The colored coat comprising the dry coating film according to the present invention has a thickness of 5
μm or less, preferably 4 μm or less, more preferably 3
It was found that when the thickness is less than μm, cracks causing the above problems do not occur in the colored coat during 90 ° bending. However, if the thickness is less than 0.05 μm, the effect of imparting color is weak, so a thickness of 0.05 μm or more is required. From this meaning, the thickness of the colored coat of the decorative panel of the present invention is 0.05.
-5 μm, preferably 0.05-4 μm, more preferably 0.1
The range is preferably to 3 μm.

As the stainless steel plate of the base material, any stainless steel plate can be used regardless of the steel type. Since the base material of the decorative panel according to the present invention is made of stainless steel plate, it can be used semi-permanently. In particular, even if the back surface that is hidden from view in use is a surface without a colored coat, the surface is made of stainless steel, so the corrosion resistance is maintained. In addition, the surface of stainless steel sheet is much more beautiful and the surface quality is better than that of ordinary steel sheet. For this reason, when the surface of this stainless steel plate is provided with the colored coat according to the present invention, it is very beautifully finished. A product having a beautiful surface is obtained by applying the colored coat of the present invention to the surface of a stainless steel plate that is mirror-finished or hairline-finished. A decorative panel on which the surface of a stainless steel plate is provided with a desired uneven pattern by etching or the like and then the colored coat according to the present invention is applied becomes a patterned decorative panel. And the adhesion between the stainless steel and the colored coat according to the present invention is very good, and even if the uneven portion is bent 90 degrees, if the thickness of the colored coat is 3 μm or less, the adhesion is impaired at that portion. Virtually nothing happens.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[Preferred embodiment of the invention]

FIG. 1 shows one unit of a decorative panel building material according to the present invention which is suitable for decorating a relatively large surface of a material such as a wall or a ceiling, and the surface on the visible side is provided with a colored coat. ing. As shown in the figure, the decorative panel building material of this example has a base surface 1 having a wide rectangular surface, and short side pieces 2a to 2d (between each side of the square base surface 1 and bent at right angles to the back side). 2b and 2d are hidden in the figure) and each of the side pieces 2a to 2d is bent outward at a right angle and has a short width extending piece 3a to 3d having a surface parallel to the base surface 1. ing. Base surface 1, side pieces 2a to 2d and protruding pieces 3a to 3d
All have the same thickness and they all consist of a titanium and aluminum nitride according to the invention, optionally a carbon steel coated with a dry-coated thin film of stainless steel sheet with a thickness of 5 μm or less. ing. In the illustrated example, the colored coat is applied to the upper surface of the figure, and not to the back surface.

FIG. 2 shows an example of a usage state in which a wall surface is decorated with the decorative panel building material of FIG. As shown in the figure, the panel building material 5 of the present invention having the same size is installed vertically and horizontally adjacent to each other along the wall surface to cover a large wall surface. At that time, a wall base material 6 is installed and adjacent panel building materials 5 are joined at the position of the base material 6. More specifically, the wall base material 6 is horizontally stretched over the portion where the lower edge or the upper edge of each panel building material 5 is located, and each panel building material 5 is fixed to the wall base material 6.

FIG. 3 shows a fixed state of the decorative panel building material 5. Upper and lower projecting pieces of each decorative panel building material 5 are positioned on a bar-shaped base material 6 which is horizontally fixed at a predetermined position with respect to the wall material 7. An example of the fixed state at this position is shown in an enlarged scale in Fig. 4. As shown in this figure,
The overhanging piece 3a of one panel and the overhanging piece 3b of the other panel are overlapped on the base material 6, and this overlapped portion is fixed by driving tapping screws 8. At that time, one side piece 2a and the other side piece 2b are different in length by a length corresponding to the thickness of the panel so that the base surface 1 of each panel is aligned with the same plane. The groove formed by the one side piece 2a, the other side piece 2b and the overhanging piece 3b forms one pattern on the decorative surface, and the caulking 9 is attached to this groove if necessary. FIG. 5 shows an example in which, instead of the caulking in FIG. 4, a channel 10 having the same colored coat as the base surface 1 is fitted in the groove. in this case,
When the side pieces 2a, 2b are bent at an angle of slightly more than 90 degrees with respect to the base surface 1, it is possible to form a groove with a widened bottom that can prevent the channel 10 from slipping off.

FIG. 6 shows a side piece 2a similar to that shown in the previous example on one side.
An example of a decorative panel building material according to the present invention which has a protruding portion 3a and a bent portion of another shape on the other side facing the protruding portion 3a, which has four 90 degree bending processes along the side. Is shown. That is, on the other side, a side piece bent 90 degrees from the base surface 1 to the back side at a right angle.
11b, an inner bent piece 12b bent inward from the side piece 11b along the base surface 1 by 90 degrees, and an inner bent piece 12b to the side piece 11b.
The second side piece 13b is bent 90 degrees in the same direction as b, and the projecting piece 14b is bent 90 degrees in the same direction as the base surface 1 from the second side piece 13b. Overhang piece 14b is side piece 11b
The gap between the overhanging piece 14b and the inward bending piece 12b is equal to or slightly larger than the panel thickness. The decorative panel building material configured in this manner can be easily attached when it is attached to a wall or a ceiling without substantially forming a groove between panels as in the previous example. That is, as shown in FIG. 6, the projecting piece 14b is fixed to the base plate 15 with screws 16. Since the overhanging piece 14b extends more outward than the side piece 11b, it suffices to fix the overhanging portion with a screw.
Then, the overhanging piece 3a of the other panel is inserted into the gap between the overhanging piece 14b of the one panel and the inwardly bent piece 12b which are screwed (inserted in the direction of the arrow in FIG. 6). By this insertion, the side piece 11b of one panel and the side piece 2a of the other panel can be joined together without a gap.

As can be seen from the above examples, the decorative panel building materials for decorating flat surfaces such as walls and ceilings of the present invention have 90
Has been bent. The outer surface including the bent portion is provided with a colored coating of the dry coating film according to the present invention.

7 to 8 show the steel frame 17 of I-type steel as the decorative panel building material of the present invention.
An example coated with 18 is shown. Also in this case, the 90-degree bent portions 19a and 19b similar to those described above are formed on the sides.
In the 90-degree bent portions 19a and 19b, side pieces and overhanging pieces similar to those described in FIGS. 4 to 5 are formed.

FIG. 9 shows an example in which a concrete column 20 whose cross section is in the direction is covered with four curved decorative panel building materials 21 of the same shape according to the present invention, and FIG. 10 shows the column 20 of four same shape of the present invention. An example of covering with the flat decorative panel building material 22 and the same four corner decorative panel building materials 23 of the present invention will be described. All of these decorative panel building materials 21, 22 and 23 have 9
It will be understood that it has 0 degree bends and these 90 degree bends are formed with side pieces and overhangs similar to those described in Figures 4-5. .

FIG. 11 shows the above-mentioned that the decorative panel building material of the present invention has.
This is an enlarged view of the 90-degree bent portion. In FIG. 11, 25 is a stainless steel plate base material, and 26 is a colored dry coat according to the present invention. When a plate having a colored dry coat 26 applied to one side of a stainless steel plate base material 25 is bent 90 degrees, the outer bent portion where the colored dry coat 26 serves as the outer corner is located at the B portion, and the inner bent portion serving as the inner corner. Is shown in part C, and these parts are shown in enlarged form in FIGS. 12 and 13, respectively. Since the tensile stress acts on the colored dry coat 26 at the portion B of the outer bending, minute cracks 27 are easily formed as shown in FIG. 12, and the compressive stress acts on the colored dry coat 26 at the portion C of the inner bending. As shown in Fig. 13, a peeling phenomenon similar to the minute chick 28 is likely to occur on the surface.

The present inventors conducted a large number of 90-degree outer bending and inner bending tests of the decorative panel building material according to the present invention using a punch and a die. As a result, when the surface of the colored dry coat was covered with a vinyl sheet and bent 90 degrees with a curvature of 3 mm, the thickness
If the thickness of the colored dry coat formed on the surface of 1.5 mm SUS304 steel was 3 μm or less, neither cracks nor peeling that penetrates to the SUS304 steel substrate occurred in the colored dry coat. A large number of colored dry coat peeling tests and corrosion resistance tests using adhesive tape were performed on the inner and outer bends. If no cracks that would lead to a SUS304 steel substrate were found, the coated products were treated. It was also found that the results showed comparable results to the same bent part of a colored coat with good ductility such as a chemical conversion product.

Hereinafter, typical examples of decorative panel building materials according to the present invention manufactured by the present inventors will be described.

Ordinary SUS304 stainless steel plate (thickness: 1.5 mm, 300 mm x 30
Bright annealing finished product with an area of 0 mm) is degreased and washed, and the length is 2880 mm x height 1130 mm x width 182 mm
It is set in a sputtering device with the internal volume of 50% Ti-50% Al alloy as the target,
While maintaining the vacuum at 10 ^-4 Torr., Ar was changed at a constant flow rate of 240 ml / min and N ₂ gas was changed in the range of 20 to 200 ml / min. A dry coating film having a thickness of μm was formed on the surface of the stainless steel plate. In addition to the above example, C _n H _m gas was added at 25 ml / mi.
An example of adding at a flow rate of n was also performed.

The color tone of the obtained dry coating film of the building material was measured by using the SM-4 color corrector manufactured by Suga Test Instruments Co., Ltd., and the relationship between the N ₂ flow rate and the color tone was measured by the Hunter color difference display method L, a, Of the b indications, the characteristic plots of a and b were used (L value: 50-60), and the results shown in FIG. 14 were obtained. Color measurement is 300 mm ×
It was done by randomly selecting 10 points on an area of 300 mm. The color difference F in 10-point color measurement was within ± 0.5.

As is apparent from Fig. 14, various color tones such as bronze, red, blue, and green are obtained, which are closely related to the N ₂ gas flow rate. A black color was obtained when C _n H _m gas was added. In addition to further fine tune the flow rate of N ₂ gas is also above typical example, was produced a large number of building materials, just adjusting the N ₂ gas flow rate (more N ₂ gas flow rate and C _n H _m gas flow rate adjustment I was able to produce most types of tones.

Four sides of each of the obtained colored panels were bent 90 degrees with a radius of curvature of 3 mm into a shape as shown in FIG. No cracks that would lead to the substrate were generated in both the inner bent portion and the outer bent portion. Further, the obtained decorative panel building material was subjected to a high temperature discoloration test, an abrasion resistance test and a fingerprint resistance test.

From the results of the high temperature discoloration test, the bronze color showed the best results, and no discoloration occurred even after continuous heating at 500 ° C for 20 hours in the atmosphere. The worst grade is the black one,
Even so, it did not discolor when continuously heated to 500 ° C for 1 hour,
The color is slightly dull when heated for 20 hours. Others showed intermediate results.

Abrasion resistance test was carried out using a # 400 and # 500 sandpaper containing SiC particles on the base surface of a decorative panel building material under a load of 200 gf.
It was evaluated by rubbing it 00 times. In all cases, no visible flaw was found in any decorative panel building material. However, the blue one looked slightly more flawed than the black and brown ones, but it was not clear.

In the fingerprint resistance test, five fingers were pressed against the surface of each sample to evaluate the visibility of the fingerprints. As a result, there was no difference in the visibility of the fingerprints due to the difference in color between the building materials of different colors. There wasn't. Fingerprints were easily removed with a dry cloth. It was also found that fingerprints were less noticeable on the hairline finish of SUS304 steel with the colored dry coat than on the mirror finish with the colored dry coat.

[Brief description of drawings]

FIG. 1 is a perspective view showing a typical shape of a decorative panel building material of the present invention, FIG. 2 is a perspective view showing an example of forming a decorative wall by the decorative panel building material of FIG. 1, and FIG. FIG. 4 is an enlarged view showing a partial cross section of the decorative wall of FIG. 4, FIG. 4 is an enlarged view of part A of FIG. 3, FIG. 5 is a sectional view similar to FIG. FIG. 6 is a partial sectional view showing another example of joining the decorative panel building material according to the present invention, FIG. 7 is a perspective view showing an example of forming a decorative column using the decorative panel building material according to the present invention, and FIG. Fig. 9 is a cross-sectional view of the decorative column shown in Fig. 9, Fig. 9 is a schematic sectional view showing another example of forming a decorative column using the decorative panel building material according to the present invention, and Fig. 10 is decoration using the decorative panel building material according to the present invention. 11 is a schematic cross-sectional view showing still another example of the structure, FIG. 11 is an enlarged cross-sectional view of a bent piece portion of the decorative panel building material of the present invention, FIG. 12 is an enlarged cross-sectional view of the B part of FIG. 11, FIG. 13 is an enlarged cross-sectional view of the C part of FIG. 11, and FIG. 14 is a sputtering apparatus for applying the colored coat of the present invention by the sputtering method. It is a figure which shows the relationship between the flow rate of nitrogen gas and hydrocarbon gas to introduce | transduce, and the coloring of the coloring coat obtained. 1 ... Base surface of decorative panel building material of the present invention, 2 ... Side piece of decorative panel building material of the present invention, 3 ... Overhanging piece of decorative panel building material of the present invention, 5 ... Decorative panel building material of the present invention, 25 …… Stainless steel sheet base material, 26 …… Colored dry coat.

Claims (8)

[Claims] 1. A substrate comprises a stainless steel plate, at least one surface of which is coated with a colored coat, and the total thickness of the substrate and the colored coat is 90.
For covering and decorating the surfaces of walls, pillars, ceilings, floors, doors, handrails, hangers or the like, which have a bent part integrally bent with a bending angle of more than 40 degrees In the decorative panel used, the coating of the colored coat is 30 to 60 at.% Titanium, 30 to 6
0 at.% Aluminum, and N (at.%) / [Ti (at.
%) + Al (at.%)] Is a thin layer having a thickness of 5 μm or less substantially consisting of nitrogen in the range of 0.6 to 1.0, and this thin layer coating is formed on the surface of the stainless steel plate base material by a sputtering method. A decorative panel building material, characterized in that the nitride of titanium and aluminum is formed integrally in the film. 2. The decorative panel according to claim 1, wherein the film of the colored coat is a thin layer having a thickness of 0.1 μm or more and 3 μm or less. 3. The decorative panel building material according to claim 1, wherein the film of the colored coat is formed on the surface of a stainless steel plate having an uneven pattern. 4. The decorative panel building material according to claim 1, wherein the film of the colored coat is formed on a mirror-finished surface of a stainless steel plate. 5. The base material is made of a stainless steel plate, at least one surface of the base material stainless steel plate is coated with a colored coat, and the total thickness of the base material and the colored coat is 90.
For covering and decorating the surfaces of walls, pillars, ceilings, floors, doors, handrails, hangers or the like, which have a bent part integrally bent with a bending angle of more than 40 degrees In the decorative panel used, the coating of the colored coat is 30 to 60 at.% Titanium, 30 to 6
0 at.% Aluminum, N (at.%) / [Ti (at.%) + Al
(At.%)] In the range of 0.6 to 1.0, and C (a
t.%) / [Ti (at.%) + Al (at.%)] is a thin layer with a thickness of 5 μm or less that is made of carbon with a ratio of 0.25 or less. A decorative panel building material, wherein the surface of the stainless steel base material is coated, and carbonitrides of titanium and aluminum are naturally formed in the coating. 6. The decorative panel building material according to claim 5, wherein the film of the colored coat is a thin layer having a thickness of 0.1 μm or more and 3 μm or less. 7. The decorative panel building material according to claim 5, wherein the film of the colored coat is formed on the surface of a stainless steel plate having an uneven pattern. 8. The decorative panel building material according to claim 5, wherein the film of the colored coat is formed on a mirror-finished surface of a stainless steel plate.