JP2002347152A - Building material made of foamed synthetic resin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building material made of a foamed synthetic resin, which has an extremely low linear coefficient of expansion and excellent mechanical strength, makes a nail and a screw hard to pull out while making the nail and screw easy to drive, and dispenses with labor for disposal. SOLUTION: This building material, which is constituted by extruding the foamed synthetic resin, has a cross section formed in an approximately symmetrical shape. A highly foamed area 4 is formed in a central part of the building material, and a low foamed area 5 is formed in an outer circumferential part thereof. Glass-fiber wire rods 2, in which a glass fiber bundle is impregnated with a thermoplastic resin, are fixedly attached for internal mounting in positions, where the area 5 formed in the outer circumferential part is located and which are made substantially symmetrical in a width direction of the cross section, along a lengthwise direction of the building material, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foamed synthetic resin building material which is fixed to a building frame with nails or screws and used as a rim or a tile bar.

[0002]

2. Description of the Related Art As a building material in place of natural wood used for a rim or a roof tile, a synthetic building material obtained by extruding a foamed synthetic resin such as PS (polystyrene) is known. Conventionally, such synthetic building materials have been used as decorative materials for buildings such as houses.
For example, it is used for skirting boards and ceiling rims. In particular, since the molded product by the extrusion molding described above can be molded in any cross-sectional shape, there is no loss due to sawing and cutting work found in wood, and not only can materials be saved, but also light weight. Therefore, it is attracting attention as an advantageous building material because it is easy to transport.

[0003] However, the above-mentioned conventional synthetic building materials mainly composed of foamed synthetic resin have a higher linear expansion coefficient and a lower strength than natural wood, so that gaps are generated at seams due to expansion and contraction due to a change in temperature. Since it is easy to bend or break and has a low density due to foaming, there is a problem that nails and screws that are driven in are easily pulled out, and its use has been limited.

[0004] In recent years, the use of synthetic building materials for buildings has been more desired because of the depletion of natural resources and the like. In order to further promote the use of such synthetic building materials, the above-mentioned problems have been solved. It needs to be resolved.

[0005] Therefore, as shown in FIG. 5, the applicant applied a foamed synthetic resin building material 20 in which a reinforcing material made of a metal strip 12 was installed in the extrusion direction of a synthetic building material made of a foamed synthetic resin 21.
(Japanese Patent Application No. 2000-274929). According to the foamed synthetic resin building material 20, the linear expansion coefficient can be suppressed to a certain extent and the strength can be secured by the reinforcing material including the metal band plate 22, and the nails and screws 23 can be secured.
However, since it is driven into the skeleton 24 after penetrating the metal strip 22, it is fixed and held to the foam synthetic resin building material 20 by the metal strip 22, thereby eliminating the problem of detachment.

However, even a building material made of a foamed synthetic resin in which a reinforcing material made of the above-described metal strip is installed cannot sufficiently suppress the coefficient of linear expansion. It takes power to drive the screw. Further, when disposing of the foam synthetic resin building material, it is necessary to separate the foam synthetic resin and the metal strip, so that there is also a problem that the disposal is troublesome.

[0007]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to make use of the above-mentioned advantages of the conventional foamed synthetic resin building material, but to make up for its disadvantages, and in particular, its linear expansion coefficient is very small and its mechanical strength is low. Another object of the present invention is to provide a foamed synthetic resin building material which is easy to be driven by nails and screws, but hard to pull out, and has little trouble in disposal.

[0008]

In order to solve the above-mentioned problems, a foamed synthetic resin building material according to the present invention is a long synthetic resin made of a foamed synthetic resin for fixing to a building frame with nails or screws. A building material, wherein the cross section of the synthetic building material has a substantially bilaterally symmetrical cross-sectional shape in the width direction, and a high foaming region is formed at a center portion thereof and a low foaming region is formed at an outer peripheral portion thereof. A glass fiber wire obtained by impregnating a glass fiber bundle with a thermoplastic resin in a low foaming region formed on the outer peripheral portion and at a position substantially bilaterally symmetrical in the width direction of the cross section; Characterized by being fixed along the length direction of the interior.

Here, the term "fastening" as used in the present invention means that the glass fiber wire and the synthetic building material, that is, the foamed synthetic resin are prevented from being mutually displaced during thermal expansion or the like.

[0010] In the foamed synthetic resin building material, it is preferable that the glass fiber wire is provided at least in two places in the height direction of the cross section, and the building frame of the building is provided on both sides in the width direction of the cross section. By fixing a side edge that abuts against the frame of the building between the two side edges and providing a fixing portion that is provided for nailing and screwing along the length direction of the synthetic building material. A channel may be formed between the side edge portion and the fixing portion.

It is preferable that a concave groove is formed at a position where the nail or screw is to be driven in along the extrusion direction of the synthetic building material, and a stop for the glass fiber wire to the synthetic building material made of the foamed synthetic resin. It is preferable that the attachment be performed with an adhesive because the attachment is more firm.

[0012]

1 to 4 exemplify an embodiment of a foamed synthetic resin building material 1 according to the present invention by a sectional shape. When these foamed synthetic resin building materials 1 are extruded while foaming a synthetic resin such as, for example, PS (polystyrene) at a predetermined magnification, for example, PP is added to the glass fiber bundle.
This is obtained by simultaneously extruding a glass fiber wire 2 impregnated with a thermoplastic resin such as (polypropylene) while adhering to the foamed synthetic resin with an adhesive 3.

At this time, a low-foaming region 4 is formed in the outer peripheral portion by cooling the outer peripheral portion in which the glass fiber wire 2 is provided to suppress foaming. As a result, a low-density high-foaming region 5 is formed at the center of the cross section, and a high-density low-foaming region 4 is formed at the outer periphery thereof. It is possible to obtain the foamed synthetic resin building material 1 which is firmly fixed to the resin with the adhesive 3 and which is installed along the extrusion direction of the foamed synthetic resin, that is, along the length direction.

In the embodiment, the glass fiber bundle 2
Is fixed to the synthetic building material, that is, the foamed synthetic resin with the adhesive 3, but the present invention is not limited to the adhesive 3, and it is sufficient that the glass fiber wire 2 and the synthetic building material can be relatively prevented from being relatively displaced. .

According to such a foamed synthetic resin building material 1, since the high-density low-foaming region 5 is formed in the outer peripheral portion of the cross section, mechanical strength against bending and compression can be ensured. The glass fiber wire 2 whose coefficient of linear expansion is much smaller than that of the foamed synthetic resin is fixed to the foamed synthetic resin in the low foaming area 5 with an adhesive 3 along the length direction of the building material, and the interior is mounted. Therefore, the linear expansion of the foamed synthetic resin due to heat is suppressed by the glass fiber wire 2. Furthermore,
There is no need to separate metals when disposing, and there is no trouble.

FIG. 1 shows a construction material 1 made of a foamed synthetic resin according to the present invention.
1 is a cross-sectional view showing a first embodiment of the present invention, and a building material 1 made of a foamed synthetic resin of this embodiment is suitably used mainly as a tile bar on a roof of a building.

The foam synthetic resin building material 1 of this embodiment has a substantially rectangular cross section symmetrical with respect to a center line m in the width direction, and a high foaming region 4 is formed at the center thereof. A low foaming region 5 is formed on the outer peripheral portion. In the low foaming area 5, at each position symmetrical with respect to the center line m, the glass fiber wire 2 is placed along the extrusion direction of the building material, that is, in the length direction, and the foamed synthetic resin of the low foaming area 5 is formed. And the interior is secured with an adhesive 3, and two pairs of such glass fiber wires 2 are embedded in the height direction of the cross section.

As described above, since the glass fiber wire 2 has a rectangular cross section symmetrical with respect to the center line m and is installed at a position symmetrical with respect to the center line, linear expansion can be suppressed. Of course, it is possible to prevent deformation such as bending of a building material due to a difference in expansion and contraction caused by the presence or absence of the glass fiber wire 2. Further, since two pairs of the glass fiber wires 2 are provided in the height direction, it is possible to more reliably suppress the linear expansion and prevent deformation such as bending and warping.

In this embodiment, one pair of the glass fiber wires 2 is provided in the width direction and two pairs of the glass fiber wires are provided in the height direction.
The number and position of the pairs can be appropriately changed within the range of the low foaming region 5.

Further, on the upper side of the cross section, there is formed a concave groove 6 indicating a position where a nail or a screw is to be driven along the extrusion direction of the building material. Driving into the building frame. Therefore, the nail or screw can be driven into an appropriate position, and at this time, the driven nail or screw penetrates the low foaming region 5 at two places in the upper and lower parts. There is no worry about falling off being held at 5.

FIG. 2 shows a foam synthetic resin building material 1 according to the present invention.
FIG. 2 is a cross-sectional view showing a second embodiment of the present invention, which is suitably used mainly as a roof tile like the first embodiment of FIG.

In addition to the construction of the first embodiment, the foamed synthetic resin building material 1 of this embodiment has side edges that abut against the skeleton on both sides in the width direction of a surface facing the skeleton of the building at the time of hitting. 7 is protruded along the longitudinal direction of the building material, and has the same height as the side edges 7 on the center line m between the both side edges 7 and is in contact with the frame to nail or screw. Fixed part 8 used for punching
However, it is similarly protruded along the length direction of the building material. As a result, two flow paths 9 are formed between the both side edge portions 7 and the fixing portion 8 so that dew or rainwater can flow or air can flow, and mold and corrosion are caused. Damage to the building can be prevented. In addition, a concave groove 6 for driving nails or screws is provided along the length direction of the building material on the center line m corresponding to the fixing portion 8 on the surface of the building material opposite to the frame. .

FIG. 3 shows a foamed synthetic resin building material 1 according to the present invention.
FIG. 9 is a cross-sectional view showing a third embodiment of the present invention, which is suitably used mainly as a rim or a climbing ridge.

The foamed synthetic resin building material 1 of this embodiment has, in addition to the structure of the first embodiment, side edges that come into contact with the frame at the widthwise both sides of the surface facing the frame when the building is struck. 7 are protruded along the length direction of the building material, and the side edge portions 7 are provided at two places between the side edge portions 7 and sandwiching the center line m.
A fixing portion 8 having the same height as that of the fixing member 8 and being used for nailing or screwing while being in contact with the above-mentioned skeleton is similarly protruded along the length direction of the building material. As a result, three flow paths 9 are formed between the side edge portions 7 and the fixing portion 8 so that dew or rainwater can flow or air can flow, and mold generation, corrosion, etc. Can prevent damage to the building.

A groove 6 for driving a nail or a screw is provided along the length of the building material at a position corresponding to each of the fixing portions 8 on the surface of the building material opposite to the frame. I have. In addition, the glass fiber wire 2 is also provided at two places above and below the low foaming area 5 on the center line m, thereby suppressing linear expansion of the building material caused by heat and preventing deformation such as bending and warping. It can be assured.

FIG. 4 shows a foamed synthetic resin building material 1 according to the present invention.
FIG. 13 is a cross-sectional view showing a fourth embodiment of the present invention, which is suitably used mainly as a waistline, a ridge retainer, and a rain retainer.

The foamed synthetic resin building material 1 of the present embodiment has a plate-like, generally rectangular cross section with a wide width, and is provided at the center of the surface in contact with the building frame and the opposite side thereof in the longitudinal direction of the building material. By forming each of the groove portions 10 along the width direction, the groove portions 10 have a substantially symmetric cross-sectional shape in the width direction and the height direction. And
In the low foaming region 5 formed on the outer periphery of the cross section, between the groove 10 and both side portions in the width direction of the cross section, two pairs of glass fiber wires 2 are symmetrically positioned with respect to the center line m.
And a pair of such glass fiber wires 2 are respectively provided in the low foaming regions 5 formed on the surface side of the cross section which is in contact with the skeleton and on the opposite surface side.

The groove 10 on the side of the surface in contact with the skeleton in this embodiment has the same function as the flow path 9 of the second and third embodiments, and the surface on the opposite side. By forming a similar groove 10 so as to have a symmetrical cross-sectional shape also in the height direction, it is possible to more reliably prevent deformation such as bending or warpage of the building material caused by heat.

[0029]

According to the foamed synthetic resin building material according to the present invention, a low foaming region having a higher density than a central high foaming region is formed on the outer peripheral portion of the cross section of the synthetic building material made of the foamed synthetic resin. Since it is formed, sufficient mechanical strength can be ensured, and nails and screws can be easily driven in, and the driven nails and screws do not fall off while being held in the low foaming region. .

Further, since the glass fiber wire having a linear expansion coefficient smaller than that of the metal strip is fixedly mounted along the length direction of the synthetic building material, the linear expansion of the thermoplastic resin is reduced. The glass fiber wire is restrained by the glass fiber wire having a very small rate, and can more effectively suppress the linear expansion of the building material as compared with the case where a metal strip is internally provided as in the related art. Because it is housed in a high-density low-foaming area, the fastening to the foamed synthetic resin becomes stronger, the relative displacement between the two is less likely to occur, and the effect of suppressing the linear expansion is more reliable. can do. In addition, there is no need to separate metals when discarding, and there is no trouble.

Further, the cross-sectional shape is made substantially symmetrical, and the glass fiber wire is provided at a position which is substantially symmetrical in the cross section of the synthetic building material. The bending of the synthetic building material due to the difference in expansion and contraction can be prevented.

At this time, by deforming the synthetic building material such as bending or warping, it is possible to more effectively prevent the synthetic building material from being bent at least at two or more locations in the height direction of the cross section. In addition, at both ends of the above-mentioned cross section, side edges that abut against the building skeleton, and fixing portions that are abutted against the building skeleton and provided for nailing and screwing between the two side edges are provided so as to protrude therefrom. In the meantime, since a flow path through which air flows or through which dew or rainwater flows is formed, damage to the building due to generation of mold, corrosion, and the like can be prevented.

Further, by forming a concave groove at a position where the nail or screw should be driven, the nail or screw can be driven at an appropriate position.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a foam synthetic resin building material according to the present invention.

FIG. 2 is a sectional view showing a second embodiment of a foam synthetic resin building material according to the present invention.

FIG. 3 is a sectional view showing a third embodiment of a foamed synthetic resin building material according to the present invention.

FIG. 4 is a sectional view showing a fourth embodiment of a foamed synthetic resin building material according to the present invention.

FIG. 5 is a sectional view showing a conventional foam synthetic resin building material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building material made of synthetic resin foam 2 Glass fiber wire 3 Adhesive 4 High foaming area 5 Low foaming area 6 Concave groove 7 Side edge 8 Fixed part 9 Flow path 10 Groove

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Claims (5)

[Claims] (1) for fixing to a building frame with nails or screws,
A long synthetic building material made of a foamed synthetic resin, wherein the cross section of the synthetic building material has a substantially bilaterally symmetrical cross-sectional shape in a width direction thereof, and a high foaming region is provided at a center portion thereof, and an outer peripheral portion is provided. Each of the glass fiber bundles is impregnated with a thermoplastic resin in a low foaming region formed in the outer peripheral portion and at a position substantially bilaterally symmetric in the width direction of the cross section. A building material made of a foamed synthetic resin, wherein the glass fiber wire obtained is fixed along the length direction of the synthetic building material and is installed. 2. A foam synthetic resin building material according to claim 1, wherein said glass fiber wire is provided in at least two places in the height direction of said cross section. 3. A building material made of a synthetic resin foam according to claim 1 or 2, wherein a side edge contacting the skeleton of the building is provided on both sides in the width direction of the cross section, and the skeleton of the building is provided between the two side edges. The fixing portion provided for nailing and screwing in contact with the projection is formed along the length direction of the synthetic building material to form a flow path between the side edge portion and the fixing portion. A building material made of synthetic resin foam. 4. A foam synthetic resin building material according to claim 1, wherein a groove is formed at a position where the nail or screw is to be driven in along a length direction of the synthetic building material. The foamed synthetic resin building material according to claim 4, wherein: 5. The foamed synthetic resin building material according to claim 1, wherein the glass fiber wire is fastened with an adhesive along a length direction of the synthetic building material and is internally provided. Building materials made of foamed synthetic resin.