JPH094181A - Exterior fitting panel - Google Patents

Abstract

PURPOSE: To provide an exterior panel for architectural use which is formed in a box shape from a composite plate fabricated by joining a metal sheet with each surface of a synthetic resin sheet, with which an enhanced waterproofness is secured. CONSTITUTION: An exterior panel 1 is chiefly composed of a front surface panel part 1a in square shape and side walls 1b, 1b... formed around the part 1a through a bending process. Each edge as a butting part 3 of adjoining side walls 1b, 1b has a swell-out shape in which plastic sheets as a core contact with each other, and the plastic sheets are welded together while a resin material 4 is interposed in an opening between edges directed inward a box.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exterior panel, and more specifically, it is formed into a box by a composite plate obtained by joining metal sheets on both sides of a synthetic resin sheet, and is mainly used as an outer wall of a building. The present invention relates to an exterior panel used for, which further improves waterproofness.

[0002]

2. Description of the Related Art Generally, in a building such as a building, various exterior panels are used from the viewpoint of ease of construction. For example, Japanese Utility Model Laid-Open No. 62-103934 discloses a lightweight exterior panel having a shape shown in FIG. 6 which is composed of a composite plate in which aluminum sheets are joined to both sides of a synthetic resin sheet.

FIG. 6 is an external view showing a conventional exterior panel. In the figure, the exterior panel indicated by reference numeral (91) is a cross section V of a composite plate obtained by joining aluminum sheets to both sides of a synthetic resin sheet. A box body having a rectangular front panel portion (91a) and side walls (91b) formed on the four sides of the square front panel portion (91a) by forming a character-shaped notch and bending the notch inside. The ear (91c) has a structure in which a part of the abutting portion between the adjacent side walls (91b) and (91b) is covered.

The exterior panel (91) includes a support piece (92),
(93) is attached by rivets or the like from the inside of the side wall (91b) and its corner, and the end of the support piece (92) protruding outward of the side wall (91b) is fixed to the wall surface of the building or the foundation steel frame. . Such exterior panels (91)
At the abutting portions of the side walls (91b) and (91b), it is difficult to weld the aluminum on the surface due to the problem of thermal deterioration of the core resin, so by filling the sealing material from the inside of the box, Maintains waterproofness inside the box.

[0005]

However, the sealing material filled in the abutting portions of the side walls (91b) and (91b) has problems such as cracking and peeling due to hardening of itself and vibration of the building. However, it is not always possible to sufficiently maintain the waterproofness of the inside of the panel as a box. Therefore, a panel capable of exhibiting excellent waterproof performance at the abutting portion of each side wall is desired.

The present invention has been made in view of the above circumstances, and an object thereof is an exterior panel formed in a box body by a composite plate in which metal sheets are joined to both surfaces of a synthetic resin sheet. The purpose of the present invention is to provide an exterior panel with further improved waterproofness.

[0007]

In order to solve the above problems, the exterior panel of the present invention is an exterior panel formed in a box by a composite plate formed by joining metal sheets on both sides of a synthetic resin sheet. It is mainly composed of a rectangular front panel part and side walls formed by bending the four peripheral parts thereof, and edges of the adjoining side walls as abutting parts are respectively synthetic resin sheets which are core materials. Are in contact with each other and have a bulging shape, and a resin material is interposed in the opening between these edge portions that are directed to the inside of the box body when they are butted, and the synthetic resin sheets are welded together. It is characterized by being

[0008]

The edges of the adjoining side walls as the abutting portions have a bulging shape in which the synthetic resin sheets abut against each other, and it is difficult for the synthetic resin sheets to dissipate the heat of fusion when welding the synthetic resin sheets. Further enhances the fusion between sheets. Further, the abutting portion of the side wall where the synthetic resin sheets are welded to each other, due to the continuous structure, does not cause cracks and the like, and reliably prevents water from entering.

[0009]

Embodiments of the exterior panel according to the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway perspective view showing the structure of an exterior panel according to the present invention from the back side. FIG.
It is a rear view which shows the arrangement | positioning position of the cut for bending formed in the composite plate which is a base material in manufacture of an exterior panel. FIG. 3 is a view taken along the line III-III in FIG. 2, and is a cross-sectional view showing the cross-sectional shape of the cut and the cross-sectional shape of the edge portion of the side wall to be the butted portion. FIG. 4 is a rear view of the main part of the exterior panel showing the structure of the abutting portions of the adjacent side walls and the welding method thereof. FIG. 5 is a rear view of the main part of the exterior panel showing the welded structure of the abutting portions of the adjacent side walls.

The exterior panel of the present invention is indicated by reference numeral (1) in FIG. Such an exterior panel (1) is a flat box body made of a composite plate in which metal sheets (11) and (11) are bonded to both sides of a synthetic resin sheet (10) as shown in FIG. 1 or 4. Is a so-called architectural panel formed in the above, and is mainly composed of a rectangular front panel portion (1a) and side walls (1b), (1b) ... And each adjacent sidewall (1b),
The edges as the butted portions (3) of (1b) are
The synthetic resin sheets (10), which are core materials, have a bulging shape in which the sheets contact each other, and the resin material (4) is provided in these openings (31) that are directed toward the inside of the box when they are butted. Interposed synthetic resin sheets (10), (10)
The structure is welded to each other.

As the core material of the composite plate forming the exterior panel (1), that is, the synthetic resin sheet (10), specifically, polyolefins such as polyethylene and polypropylene, polyvinyl chloride, polyamide, polycarbonate, polystyrene, Examples thereof include thermoplastic resins such as polyhydroxyl ether and vinyl acetate. Of course, a thermosetting resin may be used. The synthetic resin sheet (10) made of the above material is formed to have a thickness of about 1 to 6 mm. on the other hand,
As the metal sheet (11), a metal such as aluminum, stainless steel, iron, copper, titanium, tin, nickel or various alloys can be used, but usually an aluminum sheet is used. Considering strength, weight and workability, the aluminum sheet has a thickness of about 0.1 to 1.0 mm, usually about 0.3 to 0.5 mm.

Each metal sheet (11) is provided in a state of being sufficiently adhered to the synthetic resin sheet (10) by using an adhesive or the like. As the adhesive, ethylene-acrylic acid copolymer, ethylene-vinyl acetate copolymer, ethylene-
Examples thereof include glycidyl acrylate copolymer, ethylene-maleic anhydride copolymer, unsaturated carboxylic acid of polyolefin (polyethylene, etc.), or graft modified product of its anhydride. The graft ratio of unsaturated carboxylic acid or its anhydride in such a graft modified product is usually 10
^-4 to ^-3 % by weight, and the graft modified product is 1
It can also be used as an adhesive composition in which a hydrocarbon elastomer of up to 30% by weight, for example, ethylene-propylene rubber, polyisobutylene, etc. is blended. The adhesive is
Usually, it is used by laminating it on the surface of the synthetic resin sheet (10) as an adhesive film.
You may mix and use it. When used as an adhesive film, its thickness is usually selected from the range of 10 to 100 μm.

As the composite plate as described above, for example, the product "ALPOLIC" manufactured by Mitsubishi Chemical Corporation can be mentioned. This product is a composite plate in which a metal plate (for example, an aluminum plate) is adhesively bonded to both surfaces of a thermoplastic resin plate (for example, a polyethylene plate), and is widely used in various fields including the building materials field. The above composite plate, the metal sheet is superposed on both sides of the melt-extruded synthetic resin sheet,
Manufactured by passing between rotating rolls.

Front panel portion (1a) and side wall (1b)
Is formed by bending the above composite plate. As shown in FIG. 2, a concrete working method is as follows. First, in a square composite plate as a base material, first, four cuts (1
v), (1v), etc., and then, four square pieces (1c), (1c), ... Formed outside the respective intersections thereof, along the notches (1v), (1v), ... By separating, a square front panel (1a) equivalent part,
Square-shaped side walls (1
b) Die the corresponding part. Then, bending is performed with the cuts (1v), (1v), etc., which are the boundaries between the portion corresponding to the side wall (1b) and the portion corresponding to the front panel portion (1a), set inside.

In the present invention, the notch (1
It is important that v), (1v) ... Have a groove structure of a specific cross-sectional shape, and as a result, as shown in FIG. 4, the abutting portions (3) of adjacent sidewalls (1b), (1b). 2), that is, at the cut edges (1e), (1e) ... Cutting the square small pieces (1c) in FIG. 2, the synthetic resin sheets (10), (10) ... The surface can have a shape suitable for welding.

As shown in FIG. 3, the notch (1v) is an opening angle on the open side (hereinafter, an angle corresponding to 1/2 of the actual opening angle, and a line perpendicular to the bottom of the groove and the notch ( 1
The angle (β) formed by the slope of the open side of v) is shown. ) Is the opening angle on the bottom side (hereinafter, an angle corresponding to ½ of the actual opening angle, which is perpendicular to the bottom of the groove and the cut (1
The angle (α) formed by the slope on the bottom side of v) is shown. ) Is formed in a V-shaped groove having a two-step structure larger than that of FIG. That is, each edge (cutting edge (1
e) and (1e)), the synthetic resin sheet (10) as the core material has a shape that bulges toward the inside of the notch (V-shaped groove) (1v), for example, both of the notch (1v) The ridge portions (O) and (O) are formed on the inclined surface as the inclination switching points, respectively.

The notch (1v) is basically used for bending at a right angle to form the front panel portion (1a) and the side wall (1b). Therefore, the bottom of the notch (1v), which is a V-shaped groove, is usually based on the thickness and material of the metal sheet (11) on the bottom side, and the bendability, that is, the bending radius and the finishing dimensional accuracy are taken into consideration. Is set to a predetermined width (m). The opening angle (α) on the bottom side of the cut (1v) is generally set to an angle at which the cut (1v) can be bent at a right angle, that is, an angle of about 45 °. However, in the exterior panel (1) of the present invention, the opening angle (α) is set to 45 ° or less in consideration of the width (m) of the bottom portion of the cut (1v).

The reason for setting the opening angle (α) as described above is as follows. That is, each adjacent sidewall (1
The edges of b), (1b) ... as abutting portions (3) are formed by cutting the square pieces (1c), (1c) ... It corresponds to the center line (s) in FIG. 3 that divides the cut (1v) into two equal parts. Therefore, at the edges (cut sides (1e) and (1e)) that are symmetrically separated from each other with respect to the center line (s), when they are butted against each other, the synthetic resin sheets (10) and (10) are separated from each other. Above ridge (O), (O)
Width (m) at the bottom of the cut (1v) so that it abuts at
It is necessary that the above-mentioned opening angle (α) is set in consideration of the above.

On the other hand, the opening angle (β) on the open side of the notch (1v) shown in FIG. 3 is for inserting the resin material (4) as a welding material at the abutting portion (3) as shown in FIG. To form the opening (31), the angle is set larger than 45 °. These opening angles (α), (β)
By setting the above, the exterior panel (1) of the present invention, as shown in FIG. 4, has side walls (1b), (1b) which are butted at right angles.
At the abutting portion (3) of
(O) can be brought into contact with the openings (31) at the same time, and the synthetic resin sheets (10), (10) can be formed.
Allows reliable welding of each other. The opening (3
The width of 1) is a width sufficient for inserting the resin material (4), and is, for example, about 1 to 10 mm.

By the way, in the composite plate of the base material shown in FIG.
Specific dimensions of the notch (1v) provided in the shape as shown in FIG. 3 are as follows. The composite plate of the base material has a total thickness (t) of 6.0 mm, the synthetic resin sheet (10) of the core material has a thickness of 5.2 mm of polyethylene, and the metal sheets (11), (11) on both sides thereof ( 11) is aluminum with a thickness of 0.4 mm each. Notch (1
v) is a groove in which the synthetic resin sheet (10) is left with a thickness of 0.2 mm on the inner surface of the metal sheet (11) on the bottom side, and the width (m) of the bottom of the groove is 2.0 mm. , Bottom side opening angle (α) is 37.5 °, open side opening angle (β)
Is set to 60 °. Then, the height from the outer surface of the metal sheet (11) on the bottom side to the ridge (0) is 3.6.
mm.

The resin material (4) is a material corresponding to a welding rod. As the resin material (4), various kinds of thermoplastic resins can be used, but they constitute the core material of the composite plate. It is preferable to use the same type of resin as the synthetic resin sheet (10) because welding can be performed more easily.
The resin material (4) is used in the shape of a round bar or a film. A general method for molding the resin material (4) is to supply resin powder to an extruder-type melt extrusion device, heat and melt it at about 150 ° C., and extrude it from a nozzle or a T-die. Then, by adding carbon to the resin material (4), welding can be performed more favorably. The round bar has a diameter of about 1 to 10 mm, and the film has a thickness of about 1 μm to 5 mm and a width of about 3 to 1 depending on the above-mentioned gap (3).
It is a 0 mm film.

By the way, when a resin which has been activated so that it can be applied is used as the resin material (4), when the outer surface of the exterior panel (1) is applied, the front panel (1a) and the side wall (1b) are applied. ), (1b) ..., and the surface of the resin material (4) slightly protruding to the outside of the abutting portion (3) can be integrally coated, which is aesthetically preferable. As the activation treatment, for example, when polyethylene is used for the core material of the composite plate, HDPE, LDPE, L-
Examples include a method of treating various polyethylene resins such as LDP and VLDP with fluorine or a mixed gas of fluorine and oxygen.

The above-mentioned activation treatment gas is usually used after being diluted with nitrogen to an appropriate concentration, but the ratio of the fluorine-containing gas and the oxygen-containing gas is about 1 to 200 Torr of fluorine when expressed as a partial pressure, It is preferably about 10 to 50 Torr and oxygen is about 0 to 760 Torr. An example of a specific composition of the activation treatment gas is F2: O2: N2 = 27: 490: 2.
43 (Torr). Such processing is performed in the range of -50 to 100.
C., preferably 0 to 50.degree. C., for about 1 minute to 1 week, usually about 10 minutes to 3 hours. The activation treatment can be performed after forming into a round bar or a film, but is usually performed in a powder state before forming.

The exterior panel (1) of the present invention is, after the above-mentioned bending work, as shown in FIG. 4, each side wall (1b), (1b).
In the abutting portion (3), the synthetic resin sheets (10) and (10) are welded to each other by using the above resin material (4). The resin material (4) is inserted into the gap (3) that opens toward the inside of the box body, and is heated to, for example, 200 to 30 by a hot air welding machine called a so-called hot gun.
Melted at 0 ° C.

At this time, the adjacent side walls (1b), (1)
The edge portion as the abutting portion (3) of b) is provided with a bulging shape in which the synthetic resin sheets (10) and (10) are substantially in contact with each other at the ridge portions (O) and (O), and the heat of fusion is Since it is difficult to diffuse, it is possible to further enhance the fusion bonding property between the synthetic resin sheets (10) and (10). As a result, in the butted portion (3), as shown in FIG. 5, there is almost no interface between the butted synthetic resin sheets (10) and (10) and the resin material (4) interposed. A sealing structure in which the core material is integrated can be configured.

Regarding the resin material (4) slightly protruding from the abutting portion (3) to the outside, the side walls (1b), (1)
By appropriately cutting and shaping in accordance with the outer surface of b), it is possible to finish integrally with each side wall (1b).
When a coating film is formed on the surface, for example, a fluorine coating film is suitable from the viewpoint of weather resistance, impact resistance, acid resistance, alkali resistance and the like.

Further, as shown in FIG. 1, the exterior panel (1) of the present invention is provided with a support piece (2) for fixing to the building. In order to prevent electric corrosion, the supporting piece (2) is usually formed of a mold material made of the same material as the metal sheet (11) of the composite plate. Specifically, a support portion that contacts the back surface of the front panel portion (1a), a rising portion that is bent from the support portion and stands upright along the back surface of the side wall (1b), and a folding portion that is folded from the rising portion. Curved side wall (1
It has a locked portion that projects outward from the edge of b). Then, the support piece (2) is arranged on the back surface side of each side wall (1b), and the rising portions are provided with rivets (5),
It is fixed by (5).

When the exterior panels (1) of the present invention are arranged on a wall surface of a building, for example, in a grid pattern, the exterior panels (1) adjacent to each other and the support pieces (2) of the (1) are adjacent to each other as in the conventional case. , (2) are superposed and fixed to the wall surface or the base steel frame with a tex or the like. Then, for example, after inserting a backup gasket into the joint formed between the exterior panels (1), a sealing material such as a silicon-based or porosulfide-based sealing material is placed. As for the joints formed at the corners of each exterior panel (1), after caulking material has been cast in advance, and in addition to the above construction, a sealing material is cast via a backup gasket as appropriate. To process.

As described above, the exterior panel (1) of the present invention constitutes a sealing structure in which the core material is integrated in the abutting portion (3). That is, in the exterior panel (1), the side walls (1b), (1b) abutting portions (3).
Has a continuous structure in which the synthetic resin sheets (10) and (10) are welded to each other, and the synthetic resin sheet (1
Since 0) does not harden like the sealing material, cracks and peeling due to vibration of the building do not occur, and intrusion of water such as rainwater can be reliably prevented. In the present invention, the edge portion of the side wall as the abutting portion may have an appropriate bulging shape of the synthetic resin sheet, such as a curved surface shape or a convex shape.

[0030]

As described above, according to the exterior panel of the present invention, at the abutting portion of each side wall, a sealing structure in which a synthetic resin sheet as a core material is integrated is formed, and cracks and peeling are prevented. Since it does not occur, it can exhibit excellent waterproof performance.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing the structure of an exterior panel according to the present invention from the back side.

FIG. 2 is a rear view showing an arrangement position of a bending notch formed in a composite plate which is a base material in manufacturing an exterior panel.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2, showing the cross-sectional shape of the cut and the cross-sectional shape of the edge portion of the side wall to be the butted portion.

FIG. 4 is a rear view of the main part of the exterior panel, showing the structure of the abutting portions of the adjacent side walls and the welding method thereof.

FIG. 5 is a rear view of the main part of the exterior panel, showing the welded structure of the abutting parts of the adjacent side walls.

FIG. 6 is an external view showing a conventional exterior panel.

[Explanation of symbols]

 1: Exterior panel 1a: Front panel part 1b: Side wall 2: Support piece 3: Butt part 31: Gap 4: Resin material 10: Synthetic resin sheet 11: Metal sheet

Claims (1)

[Claims] 1. An exterior panel formed in a box by a composite plate obtained by joining metal sheets to both sides of a synthetic resin sheet, the square front panel portion and four peripheral portions thereof being formed by bending. Edge portions as abutting portions of the adjacent side walls, each having a bulging shape in which the synthetic resin sheets as the core material abut each other, and of the box body when abutted against each other. An exterior panel having a structure in which a synthetic resin sheet is welded to each other by interposing a resin material in an opening portion between these edge portions facing inward.