JP7203543B2 - drywall material - Google Patents

Description

The present invention relates to a drywall material forming the interior or exterior of a building or structure.

In general, a large number of wall materials are on the market, in which a metal plate material is processed by roll forming, press forming, or the like, unevenness is formed on the decorative surface, and a core material is formed between the metal plate material and the back surface material. (See Patent Documents 1 to 3, for example).

JP-A-11-240294 JP-A-2002-235423 JP 2009-167775 A

Patent Document 1 relates to an "embossed metal plate", which is designed to maintain the flatness of the flat portions at both ends of the metal plate even when the metal plate is passed between embossing rolls and the vertical and horizontal groove joints are deeply embossed. be. Patent Document 2 relates to a "wall material", in which a substantially parallel uneven striped pattern in at least four directions is formed on the surface of the convex region, and the color tone and color density change according to the change in the position of the light source and the change in the viewing direction. Various variations are described. Furthermore, Patent Document 3 relates to "embossed metal exterior wall material", in which partition planes with different oblique plane positions are alternately formed on decorative surfaces adjacent to each other in the longitudinal direction. This is a sandwich panel in which a core material (insulating material) made of synthetic resin foam is formed between backing materials.

The backing materials shown in Patent Documents 1 to 3 are laminated sheets made of one kind of hard aluminum foil, aluminum vapor-deposited kraft paper, aluminum kraft paper, aluminum tancalc paper, and the like. However, the hard aluminum foil is thin, and voids (bubbles) and wrinkles of the synthetic resin foam used as the core material are conspicuous, which impairs the appearance. In addition, aluminum-deposited kraft paper and aluminum kraft paper did not have enough strength to suppress the shape change of the product. Furthermore, aluminum tank calcium paper had issues with strength and price.

In order to solve such drawbacks, the present invention forms a core material between the metal surface material and the back material, and forms a male-female connection structure at the upper and lower ends of the metal surface material. In the drywall material, the backing material is a sheet-like material laminated in the order of a polyethylene layer, an aluminum foil layer, a polyethylene layer, a kraft paper layer, a polyethylene layer, an aluminum foil layer, and a polyethylene layer from the back side of the drywall material , The polyethylene comprising the polyethylene layer is a low density polyethylene and additionally a polyethylene copolymer of acrylic acid and maleic acid is added to provide a drywall material.

According to the drywall material according to the present invention, (1) the mechanical strength of the drywall material is improved, and deformation can be prevented. (2) Deformation of drywall materials over time can be prevented. (3) The wind resistance strength of the drywall material is improved. There are other features and effects.

1 is a cross-sectional view showing a representative example of a drywall material according to the present invention; FIG. 1 is a partially enlarged cross-sectional view showing a representative example of a drywall material according to the present invention; FIG. FIG. 3 is a cross-sectional view showing a construction state of the drywall material according to the present invention; FIG. 2 is an enlarged cross-sectional view showing an enlarged cross-section of the backing material of the drywall material according to the present invention; FIG. 4 is a partially enlarged cross-sectional view showing a cross-sectional portion of the backing material of the drywall material according to the present invention;

An embodiment of the drywall material according to the present invention will be described in detail below with reference to the drawings. That is, as shown in FIGS. 1, 2(a), 2(b), and 3, the drywall material P is formed by sandwiching a core material 3 made of synthetic resin foam, for example, between a metal surface material 1 and a back material 2. It is drywall material P. Also, FIG. 3 is a cross-sectional view showing the construction state, where α is the wall base (including the existing wall at the time of repair), β is the fixture, and γ is the connecting part.

The metal surface material 1 is a thin metal plate, such as iron, aluminum, copper, stainless steel, titanium, aluminum/zinc alloy plated steel plate, galvalume steel plate, enamel steel plate, clad steel plate, laminated steel plate (vinyl chloride steel plate, etc.), sandwich steel plate (vibration damping steel plate) etc.), vinyl chloride resin, polycarbonate resin, etc. (including, of course, colored plates coated with these resins in various tones) are embossed roll-molded or press-molded.

Further, the back surface material 2 is a sheet material made of aluminum sand kraft paper.

The backing material 2 has a cross section as shown in FIGS. 4 and 5, and from the indoor side (the back side of the drywall material P), there are a polyethylene layer A, an aluminum foil layer B, a polyethylene layer A, a kraft paper layer C, and a polyethylene layer. A, an aluminum foil layer B, and a polyethylene layer A are laminated in this order.

Looking at the specific layer thicknesses and basis weights of paper (basis per square meter), from the indoor side, polyethylene layer A (15 microns), aluminum foil layer B (7 microns), polyethylene layer A (15 microns), kraft A sheet of aluminum sand kraft paper in which a paper layer C (75 g/m2), a polyethylene layer A (15 microns), an aluminum foil layer B (7 microns), and a polyethylene layer A (15 microns) are laminated in this order. .

The aluminum foil layer B includes soft aluminum foil and hard aluminum foil.

Inorganic paper (calcium carbonate, aluminum hydroxide ceramic) is used instead of the kraft paper layer C, and its basis weight (weight per square meter) is 100 to 150 g/m2.

The allowable range for the thickness of each layer and the basis weight of the paper (weight per square meter) is polyethylene layer A (15 to 50 microns), aluminum foil layer B (6.5 to 200 microns), kraft paper layer C (50 to 120 g/m2).

The continuous heat resistant temperature of high density polyethylene is 121 degrees, the continuous heat resistant temperature of medium density polyethylene is 105 to 121 degrees, and the continuous heat resistant temperature of low density polyethylene is 82 to 100 degrees. Among these, heat-resistant polyethylene is low to medium density polyethylene.

Considering the adhesion with the urethane foam that serves as the core material 3, the polyethylene layer A is low density polyethylene, and in order to avoid the influence of the catalyst in the urethane that serves as the core material 3, a polyethylene copolymer of acrylic acid and maleic acid is added to polyethylene. is added to about 1%. If the addition amount is increased more than this, a problem arises in adhesion to urethane.

The back surface material 2 has a structure in which the kraft paper layer C is sandwiched between the aluminum foil layers B, and the water resistance, stretch resistance, and deformation prevention of the aluminum foil layer B prevent deformation of the drywall material P due to changes over time. It is possible to improve the wind pressure resistance strength of P.

The core material 3 is made of a synthetic resin foam such as phenol foam, polyurethane foam, polyisocyanurate foam, vinyl chloride foam, polyethylene foam, polystyrene foam, urea foam, etc. The metal surface material 1 or the back material 2, and heated to react, foam, and harden to integrally form the metal surface material 1 and the back material 2. As shown in FIG. In the core material 3, various flame retardants such as lightweight aggregate (perlite grains, glass beads, gypsum slag, talc stone, shirasu balloon, aluminum hydroxide, etc.), fibrous materials (glass wool, rock wool, carbon fiber, Graphite, etc.) can be mixed to improve fire resistance and fire resistance.

In the drywall material P, the engagement piece 10 is connected to the engagement groove 16, the engagement piece 14 is connected to the engagement groove 11, and the fixing surface 15 is fixed to the wall base α by a fixture β such as a nail. As a result, as shown in FIG. 3, it is connected and fixed in multiple stages from the base toward the eaves.

As an example of the overall shape of the drywall material P, as shown in FIGS. 1, 2(a) and 2(b), a core material is provided between a metal surface material 1 and a back material 2 which are long thin metal plates. 3 are sandwiched to form a male connecting portion 4 formed at the lower end in the width direction and a female connecting portion 5 formed at the upper end. It is formed.

In more detail, the male connecting portion 4 has a lower wall 7 with the lower end of the decorative surface 6 bent toward the back side, an upper surface 7a with the tip of the lower wall 7 extending upward, and a lower wall 7 at the lower end of the decorative surface 6. It is formed of a protruding piece 9 consisting of the upper surface 7a, an engaging piece 10 extending downward from the tip of the upper surface 7a, and an engaging groove 11 consisting of the upper surface 7a and the engaging piece 10. As shown in FIG.

The female joint 5 has an upper wall 8 formed by bending the upper end of the decorative surface 6 toward the back side, a joint bottom surface 8a formed by bending the tip of the upper wall 8 upward, and projecting upward between the upper wall 8 and the joint bottom surface 8a. a lower surface 13 formed by bending the tip of the joint bottom surface 8a downward to the back side; a fitting piece 14 consisting of the joint bottom surface 8a and the lower surface 13; and a fixing surface 15 projecting by bending the tip of the lower surface 13 upward and a fitting groove 16 formed from the lower surface 13 and the fixing surface 15 . Note that Q is a packing formed for strengthening waterproofness and airtightness.

α wall substrate β fixture γ joint A polyethylene layer B aluminum foil layer C kraft paper layer Q packing 1 metal surface material 2 back material 3 core material 4 male joint 5 female joint 6 decorative surface 7 lower wall 7a Upper surface 8 Upper wall 8a Joint bottom surface 9 Protruding piece 10 Engaging piece 11 Engaging groove 12 Step 13 Lower surface 14 Fitting piece 15 Fixing surface 16 Fitting groove

Claims (1)

A horizontally elongated drywall material in which a core material is formed between a metal surface material and a back material, and a male-female connection structure is formed at the upper and lower ends of the metal surface material, and the back material is the back surface of the drywall material. A sheet-like material in which a polyethylene layer, an aluminum foil layer, a polyethylene layer, a kraft paper layer, a polyethylene layer, an aluminum foil layer, and a polyethylene layer are laminated in this order from the side, and the polyethylene constituting the polyethylene layer is low-density polyethylene. A drywall material characterized by the addition of a polyethylene copolymer of acrylic acid and maleic acid .

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