JPH07238655A - Building panel - Google Patents

Abstract

PURPOSE:To enhance the weather resistance of a painted surface by laminating at least the pointed surface with a metallic plate serving as a base, a polyolefin resin layer, and urethane crosslinked polyester paint in sequence. CONSTITUTION:A panel A sandwiching a core 3 made of synthetic resin foam between a surface material 1 and a back material 2 is molded, and at least one or more pointed grooves 12 are formed in a pointed surface 11. In the surface material 1, a zinc-coat 5, chromate 6 to be applied for pretreatment, an epoxy primer 7, and a pigment-containing polyolefin resin 8 or the like are sequentially laminated upwards from a metallic plate 4 serving as a base; further, a zinc-coat 5, chromate 6 to be applied for pretreatment, an epoxy primer 7 and modified polyester paint 10 are sequentially laminated downwards from the back of the metallic plate 4, to form the surface material 1. The panel can thus be made excellent in weather resistance, corrosion resistance and pollution resistance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building panel used as a building material, an outer wall material, a roof material, and a partitioning material in a structure, and particularly to weatherability, corrosion resistance, stain resistance, etc. of a decorative surface. The present invention relates to a building panel (hereinafter simply referred to as a panel) that dramatically improves durability.

[0002]

2. Description of the Related Art Conventionally, as a panel having improved weather resistance, corrosion resistance, and stain resistance of a decorative surface, the base of the decorative surface is formed of a fluororesin layer or the surface of a metal plate serving as a base is chlorinated. There are many panels with vinyl layers,
Invented, devised and put on the market. In addition, products having a polyolefin coating film on the decorative surface have been put on the market.

[0003]

However, in the panel having the decorative surface coated with the fluororesin layer, the panel is excellent in weather resistance but inferior in corrosion resistance, and the surface scratches due to wind and rain cause red rust over time. It not only spoils the appearance, but also significantly reduces the airtightness, heat insulation, waterproofing, soundproofing and strength of the entire panel. In addition, a panel whose coated surface is coated with a vinyl chloride layer has excellent corrosion resistance, but has weaknesses in weather resistance, and over time, the panel surface discolors and fades, chalks, and cracks, cracks, and peeling of the coating film occur. However, the aesthetics were significantly impaired.

Further, since both of them are formed of a thin film of about 20 to 30 μ (dry), it is not possible to directly process the coating film to have unevenness, and therefore, the metal plate is embossed after coating the coat. In addition, it is not possible to give a fine-textured decoration, and because the surface is glossy, it does not give a heavy sense of luxury, and since the coat is a thin film, rust is likely to occur from that part even with a few scratches, and the surface When the layer deteriorates, there is a drawback that the stain resistance remarkably decreases. Furthermore, for panels with a polyolefin coating on the decorative surface, 15
Since a coating film of about 0μ was formed, scratches on the coating film did not extend to the base, and it was resistant to corrosion such as red rust.
Since the deterioration due to ultraviolet rays is severe, the color change (color difference) of the coating film is large and the color changes to a whitish color, and there is a problem in weather resistance.

[0005]

In order to eliminate such drawbacks, the present invention uses a surface material formed by laminating a polyolefin resin layer and a polyester resin layer in this order on at least the decorative surface of a base metal plate. Corrosion resistance, weather resistance,
Also, the present invention proposes a panel which has improved stain resistance and can maintain its performance for a long period of time.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment of the panel according to the present invention will be described in detail below with reference to the drawings. That is, FIG. 1 is a perspective view showing a typical example of the panel A, and the panel A has a structure in which a core material 3 is sandwiched between a front surface material 1 and a rear surface material 2.

As shown in a partially enlarged view of FIG. 2, the surface material 1 has a zinc plating 5 of 200 times in order from the surface side of a metal plate 4 having a thickness of 0.20 to 0.80 upward. ~ 3
00 g / m ² thickness, pretreatment coating type chromate 6, epoxy primer 7 3 to 20 μm thick, pigmented polyolefin resin 8 100 to 300 μm thick, urethane crosslinked polyester paint 9 5 to 30 μm thick, and metal plate Zinc plating 5 is 100 to 500 g / m ^{2 in} thickness downward from the back side of 4,
Pretreatment coating type chromate 6 and epoxy primer 7 1
The modified polyester paint 10 is laminated in a thickness of 10 to 10 μm and a thickness of 3 to 20 μm. For example, the metal plate 4 has a thickness of 0.27 mm, and the zinc plating 5 on the front and back surfaces has a thickness of 24 mm.
4g / m ² thick, epoxy primer 7 is 5μ on the surface side
Thickness, 3 μm on the back side, 150 μm for the pigmented polyolefin resin 8 and 15 μm for the urethane crosslinked polyester paint 9.
The thickness of the modified polyester coating 10 on the back side is particularly preferably 5 μm.

The metal plate 4 serves as a substrate for the surface material 1, and is made of steel, stainless steel, aluminum alloy, copper, titanium or the like, or a laminated plate of these. The zinc plating 5 has a rust preventive function, and the pretreatment coating type chromate 6 is for improving the adhesiveness of what is coated on the upper layer. The epoxy primer 7 is for enhancing the adhesiveness of what is applied to the upper layer. Furthermore, since the polyolefin resin 8 with pigment improves the corrosion resistance of the panel A,
Urethane cross-linked polyester paint 9 is the weather resistance of panel A,
In order to improve the strength and abrasion resistance, and to protect the pigment-containing polyolefin resin 8 which is the lower layer from ultraviolet rays which is a weak point, the durability is improved. The modified polyester paint 10 improves the overall strength of the back surface of the surface material 1. After that, the surface of the steel sheet is embossed with a coating and then formed into a predetermined shape by roll forming, pressing or the like. .

More specifically, the pigment-containing polyolefin resin 8 and the urethane cross-linked polyester coating 9 cancel each other's weak points to improve weatherability and corrosion resistance. The pigment-containing polyolefin resin 8 is a urethane cross-linked polyester coating. The thin film of 9 reinforces the weak surface strength to prevent the formation of red rust due to scratches, etc., and dramatically improves the corrosion resistance. The urethane crosslinked polyester paint 9 has a color change over time due to the ultraviolet deterioration of the pigmented polyolefin resin 8. It prevents change and dramatically improves weather resistance.

As shown in FIG. 3, the surface material 1 is a decorative surface 11
And at least one decorative groove 12 is formed on the surface along the longitudinal direction, and is composed of a plurality of decorative pieces 11a and 11b divided by the decorative groove 12, and as shown in FIG. The heights h ₁ and h ₂ are h ₁ ≈
It is assumed to be h ₂ .

Further, the shape of the decorative groove 12 is the decorative surface 1.
1 and θ ₁ intersect with each other, a bottom surface 12b in which the tip of the side surface 12a is bent substantially horizontally, and a sloped surface 12c where the tip of the bottom surface 12b is bent and intersects with the decorative surface 11 at θ ₂ have a substantially vertical cross section. It is formed in an isosceles trapezoidal shape. In particular, the decorative groove 12 is formed so as to prevent the decorative surface 11 from warping, twisting, and peking, and to have a different appearance from the joint portion formed when the male connecting portion 13 and the female connecting portion 14, which will be described later, are connected. Or, it has a very similar shape, and when the panel A is installed, it is useful for making the wall pieces together with the decorative pieces 11a and 11b have a three-dimensional effect. Note that θ ₂ is an obtuse angle in order to prevent rainwater or the like from being stored in the decorative groove 12.

As shown in FIG. 5, the male connecting portion 13 has an inclined piece 15 inclined at an angle θ ₃ corresponding to the angle θ ₂ of the inclined surface 12c of the decorative groove 12 of the decorative surface 11 and its end edge outward. The basement area 17 which is almost horizontal to the
The insertion edge 18 provided at the tip thereof, the engagement groove 19 having the insertion edge 18 as an upper edge, the extension portion 21 in which the lower end 20 of the engagement groove 19 projects outward, and the extension portion 21. It is formed from a tongue piece 22 having a corrugated shape provided at the tip.

More specifically, the inclined piece 15 improves the flow of rainwater, prevents rainwater from being stored in the joints, promotes the three-dimensional effect of the joints, and serves to increase the working width. It is a thing. In addition, the joint basement portion 17 serves as a waterproof base of the joint portion. Furthermore, plug edge 1
On the upper side of 8, a groove portion 23 provided parallel to the longitudinal direction of the panel A and a reinforcing rib (hollow in the figure) 24 provided at the tip thereof are provided in order to prevent the capillary phenomenon and to repel rain.
Although not shown, the core material 3 may be interposed between the upper surface and the lower surface of the insertion edge 18, or the core material 3 may not be interposed as illustrated.

Further, the tongue piece 22 prevents the edge of the extension portion 21 from waving, reinforces the strength of the panel A in the longitudinal direction, and, at the time of construction, the tip of the extension portion 21 looks like a sharp blade. It is intended to prevent injuries and work safety. Further, the tongue piece 22 bites into the back surface of the core material 3 of the upper panel A when the panels A are connected as shown in FIG. 7, and the lower edge 28 of the fitting groove 25 described later is brought into close contact with the insertion edge 18. It is useful for improving the connecting force in the connecting portion, preventing the flow between the inside and the outside of the wall body, improving the sealing property, and greatly improving the packing property and the heat insulating property.

Further, as shown in FIG. 6, the female connecting portion 14 has the other end of the decorative surface 11 on the side surface 12 of the above-mentioned decorative groove 12.
The side wall 26 is bent inward at an angle θ ₄ corresponding to the angle θ _{1 of a,} and the lower edge thereof is bent inward to form an upper edge 27 and an upper edge 2
The tip of 7 is bent outward to form a lower edge 28 with a fitting groove 25 having a substantially U-shaped cross section, and the tip of the lower edge 28 is formed with a tongue piece 22a bent like a hook. As shown in FIG. 7, the lower edge 28 is inserted into the engagement groove 19 when the insertion edge 18 is fitted in the fitting groove 25, and the tongue piece 22 of the lower panel A inserts the lower edge 28. It is in close contact with the inner surface of, and serves to significantly enhance the engagement force and waterproofness of the connecting portion. The tongue piece 22a has a lower edge 28 similar to the tongue piece 22.
It is useful for preventing waviness of the tip of the, facilitating engagement with the engaging groove 19 and improving safety during work.

The backing material 2 covers at least the back surface of the core material 3 to form the panel A as a sandwich structure to improve the mechanical strength of the panel A itself, and at the same time, the non-combustible sheet, the waterproof film, the heat shield sheet, the water absorbing sheet, and the soundproof sheet. , Is useful as a function of a packing material, for example, asbestos paper, kraft paper, asphalt felt, metal foil (Al, Fe,
Pb, Cu), synthetic resin sheet, rubber sheet, cloth sheet, gypsum paper, aluminum hydroxide paper, glass fiber non-woven fabric, etc. 1
Or a laminate of two or more kinds, or a sheet that is waterproofed, flame-retarded, or the like.

The core material 3 fills at least the back surface of the surface material 1 and mainly imparts heat insulation to the panel A, and is a kind of material having a function of adhesiveness, nonflammability, and the like as a secondary. It consists of Specifically, synthetic resin foam, rock wool, glass wool, sheathing panel, gypsum panel,
It consists of one kind of wood wool cement, board, etc., which is discharged from the raw material, molded, cured, self-adhesive, or molded body 1
It consists of seeds. When using the molded body, an adhesive (not shown) is required between the core material 3, the surface material 1 and the back surface material 2.

More specifically, a synthetic resin foam is mainly used as the core material 3. For example, a polyurethane foam resin, a phenol foam resin, a polyisocyanurate foam resin, and a flame retardant material and a flame retardant auxiliary for these. It is made of a material (borax, metaborosoda, antimony trioxide, calcium carbonate, aluminum hydroxide), bentonite, pearlite grains, shirasu balloon or the like added with one or more. Further, the core material 3 expands downward from the extension portion 21, so that it is possible to further enhance heat insulation, fireproofing, and soundproofing.

Here, the dimensional relationship of each part will be described.
That is, in the decorative groove 12 (FIG. 4), the angle between the decorative piece 11a and the side surface 12a is θ ₁ , and the decorative piece 11b and the inclined surface 12 are.
The angle with c is θ ₂ , the height of the side surface 12 a is h ₂ , the decorative groove 3
The opening width of W ₁ , the width of the lower surface 12 b is W ₂ , and the male connecting portion 1
3 (FIG. 5), the angle between the decorative surface 11 and the inclined piece 15 is θ ₃ , the height of the inclined piece 15 is h ₃ , the width from the lower end of the inclined piece 15 to the tip of the insertion edge 18 is W ₃ , and the fitting is performed. The width from the innermost portion of the groove 19 to the tip of the insertion edge 18 is W ₄ , the angle between the decorative surface 11 and the side wall 26 in the female coupling portion 14 (FIG. 6) is θ ₄ , and the height of the side wall 26 is h _4. , From the innermost side of the fitting groove 25 to the side wall 26,
The width to the tip of the lower edge 28 is W ₅ , W ₆ , the connecting portion (Fig. 7)
, Where W ₇ is the joint opening width and W ₈ is the subterranean ground width, θ ₁ ≈ θ ₄ , θ ₂ ≈ θ ₃ , h ₁ ≈ h ₃ , h ₂ ≈ h
₄ , h ₁ ≈h ₂ , W ₁ = W ₇ , W ₂ = W ₈ , W ₃ −W ₅
The relationship is ≈W ₂ ≈W ₈ and W ₄ ≈W ₆ . In the above relationship, the decorative pieces 11a and 11b are horizontal surfaces, and different decorative surfaces composed of the decorative pieces 11a and 11b are alternately formed on the wall body.
In addition, the external appearance of the decorative groove 12 and the joint portion have substantially the same width.

[0020]

[Construction Example] It is assumed that a panel A as shown in FIG. 1 is laterally stretched as shown in FIG. 7 to form a wall body. In addition,
The surface material 1 of the panels A ₁ and A ₂ is 0.2 on the metal plate 4.
7mm thick steel plate, zinc plating 5 on the front and back sides is 244g / m ²
The thickness of the epoxy primer 7 is 5 μm on the front side, 3 μm on the back side, and the polyolefin resin 8 with pigment is 150 μm thick.
The urethane cross-linked polyester paint 9 is formed with a thickness of 15 μm, the modified polyester paint 10 on the back side is formed with a thickness of 5 μm, aluminum kraft paper is used as the backing material 2, and the core material 3 is between the surface material 1 and the back surface material 2. The raw material for polyisocyanurate foam is discharged, reacted, foamed, and then cured and integrated.

Therefore, the extension portion 21 of the n-th panel A ₁ is nailed to the wall base (main wall in the case where the waterproof sheet is not used) α composed of the main columns, studs, waterproof sheets, etc.
Fixed through. Then male coupling portion fitting groove 25 of the panel A ₁ of the n + 1 stage panel A ₂ of the female coupling portion 14 1
3 is inserted into the insertion edge 18 to form a joint as shown in FIG. Further, in order to form the entire wall, the above-mentioned steps may be performed from the base toward the girder. The wall body formed in this manner has excellent connection strength in horizontal joints, waterproofness, does not cause red rust, has no discoloration or fading, and has excellent weather resistance and corrosion resistance. In addition, it is necessary to use a starter (not shown) for the base portion and caulking material, accessories, etc. for portions (not shown) such as projections and corners. Further, this panel A can be used as a vertical stretch.

[0022]

[Other Embodiments] The above description is only one embodiment of the panel A according to the present invention, and it may be formed as shown in FIGS. 8 (a) to 8 (h).

[0023]

As described above, according to the building panel of the present invention, by forming the special polyester resin layer on the polyolefin resin layer as the surface material, weather resistance (prevention of change in color difference), corrosion resistance ( It is a construction panel that has excellent red rust prevention) and stain resistance, and can maintain these performances for a long period of time. Since the decorative surface of the surface material can be embossed with a fine texture, it is a building panel with a deep, high-quality decorative surface. Since the coating layer (synthetic resin layer) of the surface material is thick, the cut surfaces at both ends are extremely safe. There are characteristics and effects.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a building panel according to the present invention.

FIG. 2 is a cross-sectional view showing an enlarged part of the surface material of the building panel according to the present invention.

FIG. 3 is an explanatory view showing a surface material of a building panel according to the present invention.

FIG. 4 is an explanatory view showing a surface material of a building panel according to the present invention.

FIG. 5 is an explanatory view showing a surface material of a building panel according to the present invention.

FIG. 6 is an explanatory view showing a surface material of a building panel according to the present invention.

FIG. 7 is an enlarged view of a joint portion formed by using the building panel according to the present invention.

FIG. 8 is an explanatory diagram showing another embodiment.

[Explanation of symbols]

 A Architectural panel 1 Surface material 2 Back material 3 Core material 4 Metal plate 5 Zinc plating 6 Pretreatment application type chromate 7 Epoxy primer 8 Pigmented polyolefin resin 9 Urethane cross-linked polyester paint 10 Modified polyester paint

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location E04F 13/08 A 9127-2E

Claims (1)

[Claims] 1. A building panel, characterized in that at least a decorative surface is made of a surface material formed by sequentially laminating a metal plate serving as a substrate, a polyolefin resin layer, and a polyester resin layer.