JP2003119923A - Composite thermal insulating board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite thermal insulating board having excellent moldability capable of making size in thickness smaller by increasing heat insulation property as a board-like thermal insulating material erected in a wall or the like of a wooden house and easily forming an unevenness or the like for forming a ventiduct ensuring air permeability of a part abutting on a column or a stud or the like. SOLUTION: The composite thermal insulating board 10 capable of laminating a phenol foam 16 excellent in heat insulation property and a polystyrene foam 11 excellent in moldability and making a size in thickness for obtaining the objective heat insulation property smaller.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating board to be installed on a wall of a house or the like, and more particularly to a composite heat insulating board suitable for use in an external heat insulating construction method or an air circulation construction method of a wooden house.

[0002]

2. Description of the Related Art Conventionally, as a heat insulating material (board-like heat insulating material, which may be referred to as "heat insulating board" hereinafter) used for a house exterior heat insulating construction method, some one-shot molded products by mold foam molding are provided. ing. Specifically, for example, a bead method polystyrene foam molded article is provided. 12
As shown in FIG. 13, the heat insulating board 1 has unevenness formed on one surface by molding (specifically, it is formed by the protrusion 2 portion and the portion where the protrusion 2 is not formed), and as shown in FIG. In addition, even if the surface 3 on which the irregularities are formed is brought into contact with a pillar, a stud, a foundation, a girder, etc. in a building (FIG. 13 shows a state in which the heat insulating board 1 is built in a wall,
The contact state with respect to the pillar 4 is shown), and the air permeability can be ensured without airtightly adhering to these pillars, studs, bases, girders, and the like. That is, since the concave and convex portions (portions where the protrusions 2 are not formed) function as the ventilation passages, even if a ventilation gap is not secured in the contact portions due to installation of the ventilation furring strips, etc. There are advantages such as ensuring air permeability. In addition, this bead method polystyrene foam heat insulation board has excellent moldability such as easy formation of the irregularities, and a heat insulation material having a different shape can be easily obtained. In FIG. 13, reference numeral 5 is a wall exterior material, and an air passage 6 for air circulation is formed by a gap secured between the exterior material and the heat insulating board 1.

The heat conductivity of 0.040 w / (m.multidot.m) is often used for the heat insulating board made of the above-mentioned bead method polystyrene foam (polystyrene foam is No. 3).
It is about K). In addition, there are also those having good heat insulation performance and having a thermal conductivity of about 0.034 w / (m · K) (polystyrene foam is a special issue), but they have the drawback of being slightly inferior to extruded products. Since the heat insulation performance of this bead method polystyrene foam insulation board is determined by the raw material beads and its expansion ratio, if one tries to obtain the same performance as an extruded product, the thickness dimension will be increased, and the wall of the building, etc. However, there are problems such as poor fit at the construction position and the need to lengthen members such as nails for fixing penetrations. In addition, there is also a problem that the frame material (the same thickness as the heat insulating material) for housing the sash, the interior window frame material to be installed after the sash is attached, and the like, causes an increase in the size and cost of members near or near the installation position of this heat insulating board. is there.

On the other hand, the heat insulation board of an extrusion molded article which is widely used in the external heat insulation method is formed by extruding a foamed resin material into a flat plate shape (hereinafter referred to as "extrusion type foam heat insulation board" in some cases). Yes).
Many extruded foam insulation materials have excellent heat insulation performance (heat conductivity). Further, since this extruded foam insulation board has no directionality, it has the advantage of being easy to use in construction. However, due to the manufacturing method, it is easy to continuously form a flat-shaped extruded foam insulation board with the desired thickness, but for example, it is necessary to form an irregular shape such as giving unevenness to the surface. Has the drawback of being difficult. Therefore, if this extruded foam insulation board is built into a building and ventilation is ensured at the contact parts for pillars, studs, foundations, girders, etc., it is necessary to secure a gap by installing ventilation vents. However, compared to the above-mentioned heat insulation board made of polystyrene foam using the bead method, there is a drawback that it takes more time and effort for construction.

[0005]

As described above, the heat insulation board made of bead method polystyrene foam which is excellent in moldability is unsatisfactory in heat insulation performance, and the extruded foam insulation board which is excellent in heat insulation performance is inferior in moldability. Therefore, in any case, it is not possible to simultaneously satisfy the two conditions of heat insulation performance and moldability.

The present invention has been made in view of the above-mentioned problems, and it is possible to improve the heat insulating performance without increasing the thickness dimension, and moreover, due to its excellent moldability, the projections for forming the air passages, etc. It is an object of the present invention to provide a composite heat insulation board that can be easily formed.

[0007]

In order to solve the above-mentioned problems, the present invention is a composite heat insulation board constructed on a wall, roof, ceiling or the like of a building, wherein phenol foam and polystyrene foam are laminated, and It is characterized in that protrusions are dispersed and formed on the surface of polystyrene foam.
According to a second aspect of the present invention, in the composite heat insulating board according to the first aspect, the polystyrene foam is bonded and fixed so as to be bonded to one of sheet-like skin materials provided on both surfaces of the phenol foam. It is characterized by According to a third aspect of the invention, in the composite heat insulating board according to the third aspect, the other skin material of the phenol foam is waterproof. The invention according to claim 4 is the composite heat insulating board according to claim 2 or 3, wherein a waterproof layer is formed on the other skin material of the phenol foam.

In the composite heat insulating board of the present invention, excellent heat insulating performance can be obtained due to the heat insulating performance of phenol foam, so that the thickness dimension for obtaining desired heat insulating performance can be reduced. Moreover, on the polystyrene foam side, due to the moldability of the polystyrene foam, it is possible to easily form a protrusion or the like for forming an air passage.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A composite heat insulating board according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 (a),
(B) is a diagram showing a composite heat insulating board 10 (hereinafter sometimes abbreviated as "heat insulating board") of the present embodiment,
(A) is a view (front view) viewed from the side of the polystyrene foam 11, (b) is a side view, FIG. 2 is a cross-sectional view showing a wall 12 constructed using the heat insulating board 10, and FIGS. 3 and 4 are buildings. It is a figure which shows the construction example of the heat insulation board 10 in FIG.
FIG. 5 is a plan sectional view showing a contact state of the wall 12 such as 3 with the constituent members, FIG. 5 is a plan sectional view showing a fixing structure of the heat insulating board 10 to the column 13, and FIG. 6 is a reinforcing piece storage hole 14 formed in the polystyrene foam 11. Sectional view showing the vicinity, FIG.
(A), (b) is a figure showing reinforcement piece 15,
(A) is a perspective view, (b) is a figure which shows another aspect of the rib formed inside the reinforcement piece main-body part.

As shown in FIGS. 1 (a) and 1 (b) -FIG.
The heat insulating board 10 has a schematic configuration in which a plate-shaped phenol foam 16 as a foamed extruded heat insulating material and a plate-shaped polystyrene foam 11 are bonded and fixed and laminated. The polystyrene foam 11 is a one-shot molded product obtained by mold foam molding such as a bead method (here, the bead method is adopted), and is formed in a plate shape. The surface of this polystyrene foam 11 on the side where it is bonded and fixed to the phenol foam 16 (hereinafter "bonding surface 11a") is flat, but the other surface (corresponding to the surface of claim 2). A large number of protrusions 17 are formed in a distributed manner on the contact surface 11b "). This polystyrene foam 11 has excellent moldability, and the above-mentioned protrusion 17 can be easily molded by the shape of the mold at the time of foam molding. Items other than the protrusions 17, for example, the reinforcing piece storage hole 14 (see FIG. 6)
Alternatively, a joint or the like between the heat insulating boards 10 built so as to be adjacent to each other can be easily formed.

Sheet-like skin materials 18a and 18b are provided on both surfaces of the phenol foam 16, and the polystyrene foam 11 has the joining surface 11a bonded to one skin material 18a by an adhesive material. It is stuck and fixed. As the skin materials 18a and 18b, for example, aluminum foil or non-woven fabric is adopted. However, as the other skin material 18b facing the one skin material 18a through the phenol foam 16, the heat insulating board 1 is used.
In view of forming the outer surface of 0, it is preferable to employ a material having a certain strength (tensile strength, etc.) against tearing, tearing, etc. (for example, the above-mentioned aluminum foil, nonwoven fabric, etc.). Further, as will be described later, in an example in which the heat insulating board 10 is used such that the skin material 18b is on the outer surface side of the outer lining method, a waterproof material is used as the skin material 18b, or the skin material 18b is used. The one having the waterproof layer 26 (see FIG. 9) formed thereon is adopted.

There is no particular limitation on the adhesive material for adhering the skin material 18a of the phenol foam 16 and the polystyrene foam 11, and a rubber-based adhesive material is used here.
Also, a vinyl acetate adhesive that adheres while applying a point pressure can be used.

The phenol foam 16 is continuously molded by extrusion molding. FIG. 8 shows an outline of an apparatus for molding the phenol foam 16. That is, the pair of skin materials 18a, 18b are continuously fed from the entrance 19a of the die 19 to the exit 19b in the direction of arrow A in FIG.
A pair of skin materials 18 is formed by injecting the phenol that is pressure-fed from the phenol filling machine 19c into the mold 19 between b and heating and foaming the filled phenol.
A molded product in which foamed phenol is filled between a and 18b is continuously extruded from the outlet 19b of the extrusion die 19. Here, the molded product extruded from the outlet 19b of the extrusion die 19 has the skin material 18 on both sides.
It has a flat plate shape with a and 18b fixed. In the extrusion die 19, while the phenol is inflated, it is filled between the pair of skin materials 18a and 18b, but it is inflated while being pressed by the extrusion die 19 and is filled in every corner of the area between the skin materials 18a and 18b. Thus, the inner surface of the extrusion die 19 is shaped. As the skin materials 18a and 18b, those that can be easily deformed by the pressure applied by the injection and expansion of phenol and can be adhered to the inner surface of the extrusion mold 19 so as to be fitted thereto are adopted. After molding, due to the adhesive force of the phenol itself, the phenol foam 16 and the skin material 1
8a and 18b are firmly bonded and integrated.

Further, in order to foam the phenol filled between the skin materials 18a and 18b, it is usually necessary to heat it to 60 ° C. or higher. Therefore, heat resistance is required for the skin materials 18a and 18b.

The heat insulation performance of the composite heat insulation board 10 can be easily adjusted by adjusting the thickness of the phenol foam 16. In this case, the phenol foam 16 has an advantage that the thickness dimension can be easily adjusted due to the manufacturing method, and the flat phenol foam 16 having the target thickness dimension can be continuously molded. When the composite heat insulating board 10 is built into a wall of a wooden house or the like for construction, the required heat insulating performance differs between a warm region and a cold region. By adjusting the thickness dimension of the composite heat insulation board 10 having appropriate heat insulation performance
Can be provided.

As is well known, phenol foam has excellent heat insulation performance, and the heat insulation performance belongs to the most excellent class of existing building insulation materials. Therefore, in this heat insulating board 10, the total thickness including the phenol foam 16 and the polystyrene foam 11 can be reduced as compared with the heat insulating board formed of only polystyrene foam. The thermal conductivity of phenol foam 16 is 0.019 to 0.020.
w / (m · K), which is commonly used for heat insulation boards made of beaded polystyrene foam and is 0.040.
w / (m · K), with good heat insulation performance 0.034
Since it is about w / (m · K), phenol foam 1
It can be seen that the heat insulation performance of No. 6 is very excellent.

For example, phenol foam 16: thermal conductivity 0.020 w / (m · K), thickness 30 mm polystyrene foam 11: 3. Thermal conductivity 0.040w / (m ・
K) and a thickness of 8 mm (dimension t in FIG. 1 (b), a flat plate portion excluding the protrusion 17), and the total thickness of the heat insulating material portion (phenol foam and polystyrene foam) is equivalent to that of the heat insulating board 10 of 38 mm. If heat insulation performance is to be obtained with a heat insulation board consisting of polystyrene foam (No. 3) only, a thickness dimension of 68 mm is required.

Thus, the heat insulating board 10 according to the present invention.
Then, it is clear that the thickness dimension can be made smaller than that of the heat insulating board made of polystyrene foam only. By reducing the thickness dimension, the workability is improved, the size of the member around and around the working position of the heat insulating board 10 is reduced and the cost is reduced, and the transportation cost is reduced by reducing the dimension when a large number of sheets are stacked. (The number of sheets that can be transported at one time by a truck or the like is increased). For example,
When installing on a wall, it is possible to prevent an increase in wall thickness, and it is necessary to use a size that corresponds to the wall thickness dimension, such as a window sash provided on the wall. It is possible to avoid downsizing, downsizing, and cost reduction. Also, for various components such as building pillars and purlins,
As for the fixing members such as nails that penetrate the insulation board and fix it, it is possible to use inexpensive ones with small size such as length by reducing the thickness of the insulation board. improves.

2 and 3 show a state where the heat insulating board 10 is built in the wall 12 of the building. In the heat insulation board 10, the contact surface 11b of the polystyrene foam 11 is in contact with the pillar 13 and the stud (not shown). This insulation board 10
The air passage 22 is formed by the gap secured between the pillar 13 and the interior material 21 provided on the side facing each other through the stud.
(Hereinafter, it may be called "internal circulation ventilation path 22"). The internal circulation air passage 22 is the underfloor space 20 of the building.
It is in communication with. A surface 23 (hereinafter, “outer surface 23”) on the phenol foam 16 side of the heat insulating board 10 is provided with an exterior material 25 (siding) of the wall 12 via a ventilation path 24 (hereinafter sometimes referred to as “outer ventilation path 24”). Material).

The outside air passage 24 has openings at the upper and lower ends of the wall 12 (the lower opening has a reference numeral 24a), and the outside air directly flows in. As a material for forming the skin material 18b on the outer surface 23 side of the heat insulating board 10, a nonwoven fabric, an aluminum foil, or the like is used, but a material having waterproofness is adopted. Also,
The joint between the heat insulation boards 10 is subjected to waterproof treatment such as blocking with a waterproof tape to prevent water from entering. As the skin material 18b, it is preferable to adopt a material having excellent weather resistance, temperature stability, etc., so as to extend the life of the heat insulating board 10.

FIG. 9 shows an example in which a surface material (hereinafter, the waterproof layer 26 may be referred to as "surface material 26") is laminated as the waterproof layer 26 on the skin material 18b. As the surface material 26,
Here, in addition to the same non-woven fabric and aluminum foil as the skin material 18b, it is a flexible sheet-shaped material made of synthetic resin such as polypropylene, polyethylene, polyvinyl chloride, EVA (ethylene-vinyl acetate copolymer). However, for example, a hard material such as a resin plate or a metal plate such as stainless steel can be used. After the phenol foam 16 is molded, the surface material 26 is adhered to the skin material 18b with an adhesive or the like.
As the skin material 18b, it is necessary to adopt a material that can be easily deformed in consideration of the molding of the phenol foam 16, and there is a restriction on the material that can be used. However, as long as it is the surface material 26 provided separately in the skin material 18b, For example, since the degree of freedom in selecting the material is great, by attaching the surface material 26, it is possible to easily improve waterproofness, durability, weather resistance and the like. Since the waterproof property is ensured by the surface material 26, it is not always necessary to adopt a waterproof material as the skin material 18b.
The range of choices for the 8b material is expanded. In the heat insulating board 10 provided with the waterproof layer 26, a waterproof treatment such as closing a joint between the waterproof layers 26 of the adjacent heat insulating boards 10 with a waterproof tape at the time of installation is performed to prevent water infiltration. The waterproof layer 2
6 is not limited to the sheet-shaped or plate-shaped surface material as described above, and may be a waterproof coating film such as a urethane resin coating film.

As shown in FIG. 3, the heat insulating board 10 is, specifically, a protrusion 1 which is provided on the contact surface 11b side by molding polystyrene foam 11 on the pillar 13 or the stud.
7, the groove-shaped space 27 secured between the protrusions 17 on the contact surface 11b side of the heat insulating board 10 functions as an air passage to ensure air permeability. The effect of preventing decay is obtained. Internal circulation air passage 22
Then, even if a spacer such as a furring strip is not installed, the air passage through which air can flow can be sufficiently secured by the space 27 between the protrusions 17 of the heat insulating board 10. There is also an advantage that the thickness dimension of the wall 12 can be reduced as compared with a case where a spacer such as a furring strip is installed to ensure air permeability.

In the outside air passage 24, the outside air passage 24
Since the outer surface 23 of the heat insulating board 10 facing the front surface is flat, specifically, for example, as shown in FIG. 5, a spacer such as a furring strip 30 installed between the outer surface 23 of the heat insulating board 10 and the exterior material 25 is used. The outside air passage 24 is secured.

FIG. 4 shows the outer surfaces of the pillars 13 and the studs (exterior material 2).
5 side) to the board-shaped intermediate material 28 fixed to
The state which built the heat insulation board 10 is shown by making the whole contact surface 11b contact. Also in this case, as in the case of FIG. 2 and FIG. 3, the outer ventilation path 24 is formed by the gap secured between the outer surface 23 of the heat insulating board 10 and the exterior material 25, and the outer surface 23 is the outer ventilation path. The exterior material 25 is faced via 24. Also in the case of FIG. 4, the protrusion 1 is formed on the contact surface 11b side.
Since the groove-shaped space 27 secured between 7 functions as a ventilation path, the ventilation area of the contact area between the heat insulating board 10 and the intermediate member 28 is ensured, and the effect of preventing decay of the wood part and the like is obtained. can get.

In the heat insulating board 10 illustrated in FIGS. 1 (a) and 1 (b), groove-shaped spaces 27 secured between the protrusions 17 are formed in a mesh shape over the entire contact surface 11b. In addition, since the groove-shaped spaces 27 are communicated with each other, the heat insulating board 10 can be placed on both sides of the pillar 13 regardless of which position of the contact surface 11b is brought into contact with the pillar 13, the stud, or the intermediate member 28. The space 27 can form a ventilation passage that connects the circulation ventilation passages 22 or the inner circulation ventilation passages 22 on both sides of the stud.

However, in the case of the groove-shaped space 27, if the formation pitch is wide, the air permeability is limited to only a part of the contact area with the members such as the pillar 13 and the intermediate member 28 (that is, only the location where the space 27 exists). Therefore, it is preferable to make the formation pitch of the spaces 27 fine. Alternatively, FIG.
As shown in (a) and (b), polystyrene foam 2
9 is formed into a contact surface 29b with a protrusion 29a having a smaller size than the protrusion 17 shown in FIGS. 1 (a) and 1 (b).
By adopting a configuration in which a large number of elements are distributed over the entire side, the air permeability can be evenly secured over the entire contact area for the above-mentioned members such as the pillars 13, and the ventilation layer is formed substantially over the entire contact area. it can.

FIG. 5 is a view showing an example of a fixing structure of the heat insulating board 10 with respect to the members constituting the wall 12, which is a pillar 1
An example of the fixing structure for 3 will be specifically shown. In this fixing structure, first, the nails 31 for temporary fixing are pierced through the heat insulating board 10 from the outer surface 23 side and driven into the columns 13 to temporarily fix the heat insulating boards 10 to the columns 13. Where the insulation board 1
When the nail 31 is driven into 0, the protrusion 17 that abuts on the pillar 13 is penetrated. It should be noted that the position of the protrusion 17 is preferably identified by a display or the like provided on the outer surface 23 of the heat insulating board (the surface of the skin 18b or the surface of the surface 26) by printing or the like.

When the temporary fixing of the heat insulating board 10 with the nails 31 is completed, the furring strip 30 is arranged on the outer surface 23 of the heat insulating board, and the fixing screw 32 which is driven from the furring strip 30 to penetrate the heat insulating board 10 is attached to the pillar 13. Furry edge 3
The heat insulating board 10 is fixed to the pillar 13 via 0. Here, the driving position of the fixing screw 32 is such that the projecting portion 17, which is also in contact with the column 13, is passed through. The installation position of the furring strip 30 with respect to the heat insulating board 23 corresponds to the existing position of the protrusion 30. In the construction of the wall 12, the insulation board 1
After building and fixing 0, the exterior material 25 is constructed. In the construction of the exterior material 25, the furring strips 30 installed at a plurality of locations on the heat insulating board 10 can be used for positioning and fixing the exterior material 25. For example, the exterior material 25 can be easily positioned by bringing the exterior material 25 into contact with the furring strip 30 or a spacer (not shown) fixed to the outer side of the furring strip 30, and the outer ventilation path 24 can be reliably formed. Note that this fixing structure is not limited to fixing to the pillar 13 of the heat insulating board 10, and can be similarly applied to fixing to the above-mentioned intermediate member 28 or other members, for example.

By the way, in this embodiment, the polystyrene foam 11 has a foaming ratio of about 50 times from the viewpoint of heat insulation performance and cost. However, since such polystyrene foam 11 cannot be expected to have hardness, if it is left as it is, the polystyrene foam 11 is prevented by the force with which the fixing screw 32 fixes the furring strip 30.
It is expected that there will be collapse. Especially insulation board 1
In the case of fixing to the studs of 0, it is not possible to secure a wide contact area (area) of the heat insulating board 10 to the member of the wall.
It is expected that crushing will occur more easily. On the other hand, since the phenol foam 16 can secure a certain degree of hardness, the problem of crushing due to the fastening force of the fixing screw 32 can be ignored. In the case of the phenol foam 16, when a material having excellent tensile strength such as a non-woven fabric is used as the skin materials 18a and 18b on both sides, the deformation resistance is secured by the leather materials 18a and 18b dispersing the fastening force to some extent. To be done. In addition, many of the non-woven fabrics and the like that can be adopted here have excellent adhesiveness to the phenol foam 16, and by using such skin materials 18a and 18b, the phenol foam 16 and the skin materials 18a on both sides can be used. 1
As a result of securing the adhesive strength with the 8b, the deformation resistance of the phenol foam 16 is improved, and the crushing by the fixing force of the fixing screw 32 is further difficult to occur.

Therefore, in this heat insulating board 10, as shown in FIG.
As shown in FIG. 6, the reinforcing piece 15 made of a hard material such as metal or hard resin is inserted into the polystyrene foam 11 to prevent the polystyrene foam 11 from being crushed by the fastening force of the fixing screw 32. Specifically, at the position of the protrusion 17 of the polystyrene foam 11, the bonding surface 11
The reinforcing piece 15 is housed in the reinforcing piece housing hole 14 formed by opening to the a side. The reinforcing piece 15 is formed by inserting a cylindrical main body 15a into the reinforcing piece storage hole 14 from the joining surface 11a side of the polystyrene foam 11.
Flange 1 projecting around one axial end of 5a
5b on the joint surface 11a side, the reinforcing piece storage hole 14
By being stored in the shallow counterbore 14a formed around the periphery of the polystyrene foam 11, the polystyrene foam 11 is stored so as not to come out to the contact surface 11b side of the polystyrene foam 11. After this insertion work, the reinforcement piece 15 is prevented from coming out of the reinforcement piece storage hole 14 by joining and fixing the polystyrene foam 11 and the phenol foam 16. Further, since the reinforcing piece 15 does not have a protruding portion toward the joint surface 11a side, it does not hinder the joint fixing of the polystyrene foam 11 and the phenol foam 16.

A cross-shaped rib 15c is provided inside the main body 15a of the reinforcing piece 15 shown in FIG. 7 (a).
The fixing screw 32 is driven by the driving force to generate the rib 15c.
To be pierced by the reinforcing piece body portion 15a. In addition, the reinforcing piece 15A shown in FIG.
As described above, it is also possible to employ a structure in which small projecting ribs 15d are provided so as to project at four locations evenly in the circumferential direction of the inner surface of the main body 15a. In the reinforcing piece 15A, the rib 15d penetrates the main body portion 15a and the member of the wall 12 (the above-mentioned pillar 1).
It is possible to further stabilize the directionality of the fixing screw 32 that is driven into (3 etc.).

As shown in FIG. 1A, in this heat insulating board 10, the reinforcing piece 15 is made of polystyrene foam 1.
The heat insulating board 10 can be firmly fixed to the member of the wall 12 by being dispersedly installed at a plurality of positions in the plane direction of 1 and driving the fixing screws 32 by appropriately using these reinforcing pieces 15. In addition, as illustrated in FIG. 4, when the heat insulating board 10 is fixed by being bonded to the intermediate material 28, the fixing screw 32 driven from the furring strip 30 is passed through the heat insulating board 10 to form the intermediate material 28. The heat insulation board 10 can be fixed by making it bite, but for more reliable fixation, the fixing screw 32 penetrates the intermediate member 28 and the pillar 1
It is preferable to reach 3 and the studs and let them bite.

In a polystyrene foam having excellent heat insulation performance, the hardness becomes low depending on its expansion ratio,
Although the heat insulating board made of polystyrene foam is easily deformed and has some inconveniences when it is transported to the built-in position, the heat insulating board 10 has phenol foam 16 and polystyrene foam which can secure a certain degree of strength as described above. Since 11 and 11 are joined and fixed, the shape is stable, and there is an advantage that workability can be improved. Further, since the phenol foam 16 exhibits not only the heat insulation performance but also the sound insulation performance, the building in which the heat insulation board 10 is used for the wall 12, the ceiling, the floor, etc., has a comfortable sound insulation property. Can be improved.

(Another Embodiment) FIG. 11 shows a wall 12A which is constructed by installing the heat insulating board 10 in the opposite direction to that shown in FIGS. That is, in this wall 12A, the surface of the heat insulation board 10 on the phenol foam 16 side (the skin material 1
8b) is brought into contact with the pillars 13 and the studs, and the surface (contact surface 11b) on the polystyrene foam 11 side is directed to the outside to form the protrusion 17
The exterior member 25 is brought into contact with the exterior member 25, and the space between the protrusions 17 secures the outside ventilation passage 24A between the exterior member 25 and the exterior member 25. No internal circulation vents are formed. In this case, the joint between the polystyrene foams 11 of the adjacent heat insulating boards 10 is waterproofed with a waterproof tape or the like. Also, phenol foam 1
It is preferable that the skin material 18a located at the boundary between 6 and the polystyrene foam 11 functions as a waterproof layer.
Although not shown, as a fixing structure of the heat insulating board 10 to the pillar 13, for example, the heat insulating board 10 is directly driven into a reinforcing piece embedded in the polystyrene foam 11.
It is possible to adopt a configuration in which the fixing part screw that penetrates through reaches the column 13 and bites into it. In this case, a counterbore portion for accommodating the head of the fixing screw is formed at the end of the reinforcing piece on the polystyrene foam 11 surface side so that the driven fixing screw does not protrude to the surface of the polystyrene foam 11 side. Is preferred. In addition, a slight gap is secured between the protrusion 17 of the polystyrene foam 11 and the exterior material 25, and the furring strip is arranged on the protrusion 17 using this gap,
It is also possible to perform fixing with the same configuration as that shown in FIG. That is, the fixing screw driven from the furring strip arranged on the protrusion 17 penetrates the heat insulating board 10 to reach the pillar 13 and bite into the pillar 13. However, the furring strip is installed at a position corresponding to the reinforcing piece embedded in the polystyrene foam 11, and the fixing screw is passed through the reinforcing piece. The exterior material 25 is brought into contact with the furring strip.

The present invention is not limited to the above-mentioned embodiment, but, for example, the outer shape of the entire heat insulating board, the shape of the protrusion on the contact surface side of the polystyrene foam, the fixing structure for the wall member, etc. are appropriately changed. It goes without saying that it is possible.
The heat insulating board according to claim 1 is not limited to a structure in which a phenol foam and a polystyrene foam molded in a plate shape are laminated by joining and fixing, for example, a polystyrene foam directly formed on one side of the phenol foam molded in a plate shape. It is also possible to adopt a configuration in which the components are formed by foaming and are integrated. In this case, by providing a skin material having excellent adhesiveness with the polystyrene foam on one side of the phenol foam, the adhesive strength of the polystyrene foam can be ensured and the step of joining with the adhesive material or the like can be omitted. The application of this insulation board is not limited to the wall of a wooden house, for example,
It may be a ceiling, a roof, a floor or the like. Also in the case of application to a ceiling, a roof and a floor, the heat insulating board may be fixed to the ceiling member, the roof member and the floor member by the same fixing structure as illustrated in FIG.

[0036]

As described above, according to the composite heat insulating board of the present invention, the excellent heat insulating performance can be secured by the phenol foam having the excellent heat insulating performance, and the total thickness including polystyrene foam can be reduced. . Moreover,
Since a protrusion can be easily formed on one side by using polystyrene foam with excellent moldability, a ventilation passage for ensuring the ventilation of the part that abuts the member of the building on which the composite heat insulating board is constructed, etc. It has an excellent effect that can be easily realized.

[Brief description of drawings]

1A and 1B are views showing a composite heat insulating board of the present embodiment, wherein FIG. 1A is a polystyrene foam 1;
The figure seen from the 1 side (front view), (b) is a side view.

FIG. 2 is a view showing an example of construction of a heat insulating board in a building, and is a cross-sectional view showing a wall constructed using the heat insulating board of FIG.

FIG. 3 is a diagram showing an example of construction of a heat insulating board in a building, and is a plan sectional view showing a contact state of the heat insulating board with respect to a pillar.

FIG. 4 is a view showing a construction example of a heat insulating board in a building, and is a plan sectional view showing a contact state of the heat insulating board with respect to an intermediate material of a wall.

FIG. 5 is a plan sectional view showing a fixing structure of a heat insulating board to a pillar.

FIG. 6 is a cross-sectional view showing the vicinity of a reinforcing piece storage hole formed in polystyrene foam.

7 (a) and 7 (b) are views showing a reinforcing piece, FIG. 7 (a) is a perspective view, and FIG. 7 (b) is a view showing another aspect of ribs formed inside the reinforcing piece main body portion. .

FIG. 8 is an overall view showing an outline of an apparatus for extrusion-molding phenol foam.

FIG. 9 is a cross-sectional view showing a structure in which a surface material is attached to a skin material on the outer surface side of a heat insulating board.

10A and 10B are views showing a heat insulating board using polystyrene foam provided with projecting projections, wherein FIG. 10A is a perspective view and FIG. 10B is an exploded perspective view.

FIG. 11 is a plan cross-sectional view showing another example of a wall constructed by incorporating the heat insulating board of the present invention.

FIG. 12 is a perspective view showing a heat insulating board formed only of a conventional polystyrene foam.

FIG. 13 is a plan sectional view showing a state where the heat insulating board of FIG. 12 is in contact with a pillar of a building.

[Explanation of symbols]

10 ... Composite heat insulation board, 11 ... Polystyrene foam,
11b ... Surface (contact surface), 12 ... Wall, 12A ... Wall, 16
... phenol foam, 17 ... protrusions, 18a, 18b ...
Skin material, 24 ... Outside air passage, 24A ... Outside ventilation passage, 26 ... Waterproof layer (surface material), 27 ... Space, 29 ... Polystyrene foam, 29a ... Projection, 29b ... Surface (contact surface).

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Osamu Tsuji             Fukubi, 1-23-3 Oi, Shinagawa-ku, Tokyo             Bill Air Cycle Home System Stock Association             In-house (72) Inventor Kenjiro Yoshida             Fukubi, 1-23-3 Oi, Shinagawa-ku, Tokyo             Bill Air Cycle Home System Stock Association             In-house F-term (reference) 2E001 DA01 DD01 FA03 FA14 FA16                       GA17 GA22 GA24 GA28 GA42                       HB04 HD02 HD09 LA01 LA04                       LA12

Claims (4)

[Claims] 1. A composite heat insulating board to be applied to a wall, roof, ceiling, etc. of a building, wherein phenol foam and polystyrene foam are laminated, and protrusions are dispersedly formed on the surface of the polystyrene foam. Characterized composite heat insulation board. 2. The composite heat insulation board according to claim 1, wherein the polystyrene foam is bonded and fixed so as to be bonded to one of the sheet-like skin materials provided on both surfaces of the phenol foam. . 3. The composite heat insulating board according to claim 2, wherein the other skin material of the phenol foam is waterproof. 4. The composite heat insulating board according to claim 2 or 3, wherein a waterproof layer is formed on the other skin material of the phenol foam.