JP2000192605A - Panel for construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recycle a foamed material while ensuring the strength of the foamed material. SOLUTION: In the panel 1 for construction installed between the frameworks 11 of a wooden building and constituted while containing a foamed material 3 and a stud 4, the foamed material 3 can be recycled by using polystyrene as the forming material of the foamed material 3. The strength of the foamed material 3 is ensured by setting the expansion ratio of the foamed material 3 at 30-70 times.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building panel.

[0002]

2. Description of the Related Art For example, in the case of a wall of a wooden house in which an interior material and an exterior material are attached to a frame, various insulating materials are provided in a space formed by the interior material and the exterior material in order to improve heat insulation. It is common practice to place building panels. That is,
Architectural panels are typically used mounted between adjacent wooden columns.

As shown in FIG. 17, this type of architectural panel 50 is provided with a face member 51 constituting an outer surface thereof. One stud 52 extending along the longitudinal direction of the panel is joined to a central portion on one side of the face material 51. Further, a foam material 53 having a heat insulating function is joined to the face of the face material 51 on which the studs 52 are provided. This foam material 53
Is molded by filling a synthetic resin such as polyurethane into a mold (not shown) provided around the face material 51.

[0004]

However, in the conventional building panel 50, when the polyurethane foam 53 is incinerated by dismantling a wooden house or the like, a toxic gas such as cyan gas is generated. Therefore, as a method of disposing the foam material 53, a method of burying it in a landfill or the like has been adopted. In any case, there is a problem that the foam material 53 cannot be recycled because the foam material 53 is not used repeatedly but is disposed of once and disposable.

The present invention has been made to solve the above problems, and a first object of the present invention is to provide a building panel capable of recycling a foam material. Another object of the present invention is to provide an architectural panel capable of securing the strength of a foam material even if the material of the foam material is changed to a recyclable material.

[0006]

According to a first aspect of the present invention, there is provided an architectural panel provided between a frame of a wooden house and including a foaming material and a reinforcing member, wherein the foaming material is formed. The gist is that the material is polystyrene and the expansion ratio of the foamed material is set to 30 to 70 times.

According to a second aspect of the present invention, in the building panel according to the first aspect, the magnification is set to 35 to 60 times. According to a third aspect of the present invention, in the building panel according to the first or second aspect, the air bubbles contained in the foam material are independent.

According to a fourth aspect of the present invention, there is provided an architectural panel provided between a frame of a wooden house and including a foam material and a reinforcing member, wherein the foam material is formed in a molecular structure. It is a gist of the present invention that a foaming ratio of the foamed material is set to 30 to 70 times while a polymer containing no nitrogen is used.

Next, the operation of the present invention will be described.
According to the first aspect of the present invention, since the material for forming the foamed material is made of polystyrene, the foamed material can be recycled. Therefore, when disposing of the foam material due to the dismantling of the wooden house, the foam material is not disposable at one time. Further, since the expansion ratio of the foam material is set to 30 to 70 times, the thermal conductivity can be reduced and the strength of the foam material can be secured.

According to the second aspect of the present invention, since the expansion ratio of the foam material is set to 35 to 60 times, the balance between the thermal conductivity and the strength of the foam material becomes suitable. According to the third aspect of the present invention, since the bubbles contained in the foam material are independent, an appropriate plastic deformation is caused by pressing. For this reason, it becomes easy to assemble the building panel to the frame. In addition, when the building panel is used, for example, for heat insulation, the heat insulating property is improved as compared with the case where the building panels are open cells. Further, when the building panel is used for sound insulation, the sound insulation is improved.

According to the fourth aspect of the present invention, even if the foamed material is incinerated when the wooden house is dismantled or the like, the material for forming the foamed material is made of a polymer containing no nitrogen. Poor gas generation. Therefore, it can be made environmentally friendly. Further, since the expansion ratio of the foam material is set to 30 to 70 times, the thermal conductivity can be reduced and the strength of the foam material can be ensured.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the building panel of the present invention is embodied as a building panel for a wooden house will be described below with reference to the drawings.

FIG. 1 is a front view of a building panel 1 as viewed from the indoor side of a wooden house. FIG. 2 is a plan sectional view of the building panel 1. As shown in FIGS. 1 and 2, the building panel 1
Is basically composed of a face material 2, a foam material 3, a stud 4, and the like.

The face material 2 constitutes the outer surface of the building panel 1 and has an outer dimension slightly larger than that of the foam material 3. The face material 2 is made of plywood (wood). One wooden stud 4 extending along the longitudinal direction of the panel is joined to the center of one side surface of the face material 2. A foam material 3 having a heat insulating function is adhered to the face of the face material 2 on which the studs 4 are provided. The foam material 3
In other words, two studs 4 extend along the panel longitudinal direction.
It is divided into two. The foam material 3 plays a main part when the building panel 1 exhibits a heat insulating effect.

When assembling the building panel 1, the installation space K (see FIG. 4) surrounded by the columns 12 constituting the frame 11 of the wooden house and the horizontal members 13 such as beams and bases.
Then, the foam material 3 is fitted therein. In addition,
The width of the foam material 3 is formed to be slightly smaller than the width between the columns 12 so that the building panel 1 can be easily fitted into the frame 11. However, the gap between the foam material 3 and the column 12 is determined to be 5 mm or less according to the standard.

On the indoor side surface S2 opposite to the outdoor side surface S1 with respect to the face material 2 of the foam material 3, two thin portions 5 for passing electric wiring provided in a wooden house are recessed. Each thin portion 5 extends along the longitudinal direction of the stud 4, and is formed on both left and right edges of the building panel 1. That is, each thin portion 5 is formed at a position farthest from the stud 4 in the width direction of the hot wall panel 1. Then, the surface corresponding to the indoor side of the thin portion 5 and the left and right end surfaces S4, S6 of the foam material 3
The surfaces corresponding to are open. In this embodiment, the ratio of the width of the thin portion 5 to the width of the foam material 3 is set to 10 to 80%.

In the foam material 3, the portion other than the thin portion 5 is a thick portion 6 which is thicker than the thin portion 5. That is, in the foam material 3, the region between the thin portion 5 and the stud 4 and the regions at the upper and lower ends of the foam material 3 are all thick portions 6. As a result, portions that contact the left and right side surfaces of the stud 4 are thick portions 6. In this embodiment, the ratio of the thickness of the thin portion 5 to the thickness of the thick portion 6 is 2
It is set to 5 to 50%.

The indoor side surface S2 of the foam material 3 protrudes more indoor side than the indoor side surface S12 opposite to the outdoor side surface S11 with respect to the face material 2 of the stud 4. Then, in a state where the building panel 1 is fitted in the installation space K in the frame 11,
The stud 4 has an indoor side surface S2 disposed closer to the indoor side than the pillar 12 and the horizontal member 13. Therefore, when the building panel 1 is fitted, the indoor side surface S2 of the foam material 3 is located closer to the indoor side than the columns 12 and the horizontal members 13.

In this embodiment, the indoor side surface S2 of the foam material 3 is 1 to 3 m from the indoor side surface S12 of the stud 4.
m is overhanging. More preferably, it is 1 mm to 2 mm. And the interior material which comprises a wooden house is pressed against the indoor side surface S2 of the foam material 3,
The indoor side surface S2 of the foam material 3 and the indoor side surface S12 of the stud 4 are flush.

As shown in FIGS. 1 to 4, four upper and lower end surfaces S3 and S5 and left and right end surfaces S4 and S6 of the foam material 3 are
Each is composed of a vertical surface 3a and an inclined surface 3b. Each vertical surface 3 a is orthogonal to the outdoor side surface S <b> 1 with respect to the face material 2 of the foam material 3. Also, the vertical surface 3a
Is formed by a predetermined thickness from the outdoor side surface S1 of the foam material 3 to the indoor side surface S2. The cross-sectional area of the foam material 3 corresponding to the vertical surface 3a is equal in the thickness direction of the foam material 3.

On the other hand, the inclined surface 3 b is formed by the remaining thickness of the foam material 3. And the cross-sectional area of the foam material 3 corresponding to the inclined surface 3b becomes smaller toward the indoor side surface S2 of the foam material 3. In addition, each of the inclined surfaces 3b is visible from the indoor side surface S2 side opposite to the outdoor side surface S1.
Therefore, the area of the outdoor side surface S1 is larger than the area of the indoor side surface S2.

When the building panel 1 is fitted in the installation space K of the frame 11, the inclined surface 3 b is located closer to the indoor side than the columns 12 and the horizontal members 13. The angle θ between each vertical surface 3a and each inclined surface 3b is generally preferably 1 ° to 30 °,
More preferably, it is 3 ° to 20 °, and in particular, 5 °
It is preferable that the angle is from 10 to 10 °.

The material for forming the foam 3 is a polymer containing no nitrogen in its molecular structure. In this embodiment, the material for forming the foam material 3 is a CN bond (carbon / nitrogen bond).
Uses a polystyrene foam without any. The reason for choosing the polystyrene foam is as follows. First, polystyrene foam can be recycled many times instead of being thrown away once when disposing of the foam material 3 by dismantling a house or the like.
Second, because polystyrene foam has fine and independent pores (discontinuous pores) inside, it causes moderate plastic deformation when pressed. Not only that, but also excellent heat insulation.

The expansion ratio of the foam material 3 is set in the range of 30 to 70 times. The reason for setting the magnification in this range is as follows. That is, when the expansion ratio is lower than 30 times, the number of air bubbles contained in the foamed material 3 is reduced, so that a large amount of polystyrene as a forming material is required. Therefore, the foam material 3
This is because the material cost of the material increases. Further, when the expansion ratio is higher than 70 times, there is an advantage that the thermal conductivity increases as the number of bubbles increases. However, this is because the strength of the entire foam material 3 is reduced. Therefore, the thermal conductivity and strength of the foam material 3 are well balanced. The expansion ratio of the foam material 3 is preferably in the range of 35 to 65 times,
It is even more preferable to stay within the range of 60 times.

As shown in FIGS. 1 and 4, positioning portions 7 a and 7 b are provided at the upper and lower ends of the stud 4 along the longitudinal direction of the stud 4. Therefore, the positioning portions 7a,
Reference numerals 7b protrude outward from upper and lower end surfaces S3 and S5 of the foam material 3, respectively. The positioning portion 7 a is provided on the center line of the foam material 3. Such positioning part 7
a and 7b are made of the same material (wooden) as the horizontal member 13 constituting the shaft assembly 11.

The horizontal member 13 constituting the frame 11 of the wooden house
Has a pair of engaging portions 8 corresponding to the positioning portions 7a and 7b.
a, 8b are recessed. Each of the engaging portions 8a and 8b is formed at a central portion of each of the transverse members 13. Each of the engaging portions 8a and 8b extends along the mounting direction of the building panel 1 with respect to the shaft set 11, respectively. And
When assembling the building panel 1 to the shaft assembly 11, the positioning portions 7a and 7b are engaged with the upper and lower engaging portions 8a and 8b.

The above-mentioned building panel 1 can be manufactured, for example, through the following procedure. First, the stud 4 is joined to one side surface of the prepared face material 2 using an adhesive or the like. Next, the face material 2 is set on a mold having a concave portion corresponding to the shape of the foam material 3 to be formed, with the stud 4 facing downward. Then, a pressing force is applied to the molding die and the face material 2 from above and below by a pair of jigs.
In this state, after the starting material and the foaming material are injected into the internal space defined by the face material 2 and the mold, heat is applied to foam them. After the foam material 3 is sufficiently hardened by cooling, the face material 2 is removed from the mold. Then, on the face material 2,
A foam material 3 having a desired shape is formed, whereby the building panel 1 is completed.

Next, a method for constructing the building panel 1 of the present embodiment will be described. Fig. 5 shows the construction panel 1
FIG. 6 shows a state before assembling the building panel 1.
Is shown in a state assembled to the shaft assembly 11. As shown in the figure, the foam material 3 of the building panel 1 created as described above
Into the installation space K surrounded by the columns 12 and the horizontal members 13. At this time, the engaging portions 8 formed on the horizontal members 13
The upper and lower positioning portions 7a, 7 of the building panel 1 are provided at a, 8b.
b is engaged. As a result, the building panel 1 is fitted while being guided, so that the center between the columns 12 constituting the frame 11 naturally coincides with the center of the foam material 3. As a result, the gap between the foam material 3 and the column 12 is kept within the range of the standard size (5 mm or less).

When the foam material 3 is fitted, the engaging portion 8
The positioning portions 7a and 7b slide with respect to a and 8b. However, the positioning portions 7a and 7b and the horizontal member 1
Since both Nos. 3 are made of wood, their friction coefficients are relatively small. For this reason, the positioning portions 7a, 7b are
Since the foam material 3 moves smoothly in the inside b, the foam material 3 is smoothly fitted. The installation of the building panel 1 fitted as described above is performed by driving a nail (not shown) or the like into the peripheral portion of the face material 2.

Further, inclined surfaces 3b are formed on the upper and lower end surfaces S3 and S5 and the left and right end surfaces S4 and S6 of the foam material 3. Therefore, the area of the indoor side surface S <b> 2 of the foam material 3 is significantly smaller than the projected area of the installation space K in the frame 11. Therefore, when the foam material 3 is fitted, the indoor side surface S2 side of the foam material 3 smoothly enters the installation space K.

After the building panel 1 is attached, the pillar 1
2 is attached with an interior material (see FIG. 6) 15 of a wooden house.
Then, the indoor side surface S2 of the foam material 3 is pressed by the interior material 15, and the foam material 3 is deformed by plastic deformation of the foam material 3.
The indoor side surface S2 of the stud 4 is flush with the indoor side surface S12 of the stud 4. As a result, the indoor side surface S2 of the foam material 3 is pressed against the back surface of the interior material 15, no gap is formed between the interior material 15 and the foam material 3, and dew condensation occurs between the interior material 15 and the foam material 3. Will not occur.

At the same time, the inclined surface 3b is crushed and lost by the plastic deformation of the foam material 3. Therefore, there is no gap due to the inclined surface 3b between the end surfaces S3 to S6 of the foam material 3 and the columns 12 and the horizontal members 13 forming the frame 11. However, there is a slight gap (5 mm or less) within the standard range due to the vertical surface 3a. As a result, no dew condensation occurs between the foam material 3 and the columns 12 and the horizontal members 13. Then, after the interior material 15 is assembled, the exterior material (see FIG. 6) 16 of the wooden house is arranged so that the face material 2 cannot be seen from the outside of the wooden house, and the exterior material 16 is attached to the shaft assembly 11.
Attach to

Therefore, according to this embodiment, the following effects can be obtained. (1) Since the material for forming the foam material 3 is made of polystyrene, the foam material 3 can be recycled. Therefore,
For example, unlike a polyurethane, there is no need to dispose of it in a landfill, and it can be environmentally friendly. Further, since polystyrene is a polymer containing no nitrogen, it is possible to prevent the generation of toxic gas such as cyan gas even if the foamed material 3 is incinerated after being recycled many times.

(2) Since the expansion ratio of the foam material 3 is set in the range of 30 to 70 times, the expansion ratio of the foam material 3 is set in an appropriate range. Can be prevented from decreasing. In addition, the amount of the material (polystyrene) used can be kept within a suitable range, and a rise in the manufacturing cost of the building panel 1 due to the material cost can be prevented.

(3) Since the bubbles contained in the foam material 3 are independent, the foam material 3 undergoes an appropriate plastic deformation when pressed. For this reason, even if it slightly projects from the indoor side surface S2 of the foam material 3 and the indoor side surface S12 of the stud 4,
When the architectural panel 1 is attached to the vehicle, both surfaces S2 and S12 can be easily made flush. Therefore, the workability of assembling the building panel is improved. Moreover, since the foam material 3 is an independent cell, the heat insulation of the building panel can be improved as compared with the continuous cell.

(4) A thin portion 5 is formed on the indoor side surface S 2 of the foam material 3, and the thin portion 5 is formed at a position away from the stud 4. Then, between the thin portion 5 and the stud 4, a thick portion 6 in contact with the stud 4 is formed. For this reason, the bonding area between the foam material 3 and the stud 4 can be increased. Therefore, the forming material (polystyrene) of the foam material 3 is
Even if the adhesiveness to the stud 4 is poor, it is possible to prevent the foam material 3 from peeling off from the stud 4.

(5) The thin portion 5 of the foam material 3 is formed not at the most part of the foam material 3 but at the portion farthest from the stud 4. Therefore, even if the forming material (polystyrene) of the foam material 3 is relatively weak, it is possible to prevent the strength of the entire building panel 1 from decreasing.

(6) Part of the foam material 3 corresponding to the indoor side of the wooden house is the indoor side surface S12 of the stud 4 corresponding to the indoor side.
And slightly overhang. Therefore, the foam material 3 is plastically deformed by attaching the interior material 15 in a state where the foam material 3 is attached to the frame 11. Due to this deformation, the indoor side surface S2 of the foam material 3 and the back surface of the interior material 15 can be pressed against each other. Therefore, the heat insulating effect can be reliably obtained, and the occurrence of dew condensation between the foam material 3 and the interior material 15 can be prevented.

(7) A vertical surface 3a perpendicular to the outdoor side surface S1 of the foam material 3 is provided on the end surfaces S3 to S6 of the foam material 3.
And the indoor side surface S2 of the foam material 3 adjacent to the vertical surface 3a
An inclined surface 3b that is visible from the side is formed. For this reason, there is an advantage that the work of fitting the heat insulating wall panel 1 becomes relatively easy. At the same time, the positioning portions 7a and 7b of the building panel 1 can be easily fitted into the engaging portions 8a and 8b of the shaft assembly 11.

(8) Positioning portions 7 are provided at the upper and lower ends of the stud 4.
a, 7b are protruded, and the positioning portions 7a, 7b
Can be engaged with the engaging portions 8a and 8b provided on the shaft set 11 side. For this reason, it is possible to quickly and easily align the center of the building panel 1 accurately with the center between the columns 12 constituting the frame 11. Therefore, foam 3 and pillar 1
2 can be kept within the standard.

(9) By fitting the foam material 3 into the installation space K of the frame 11 and assembling the interior material 15 with the frame 11, the inclined surface 3b of the foam material 3 is eliminated. Therefore, since only the vertical portion 3a exists between the end surfaces S3 to S6 of the foam material 3 and the columns 12 and the horizontal members 13 forming the frame 11,
No large gap is formed by the inclined portion 3b. As a result, it is possible to prevent dew condensation from occurring between the foam material 3 and the columns 12 and the horizontal members 13.

The embodiment of the present invention may be modified as follows. -As a material for forming the foam material 3, other phenol resin, silicone resin, urea resin or the like having no CN bond can be used other than the polystyrene foam.

In addition to using the building panel on the wall of the house, the building panel may be provided on a floor, a field, a ceiling, or the like. In particular, when used on a ceiling, as shown in FIGS. 7 and 8, a building panel 1 from which the face material 2 is omitted is used. Further, when the face material 2 is omitted, the inclined surface 3b of the foam material 3 may be provided not on the indoor side but on the outdoor side. or,
In particular, when used on a floor or a field, a rectangular frame 20 is provided along the edge of the foam material 3 as shown in FIG. When the frame 20 is provided on the building panel 1,
The positioning portions 7a and 7b provided on the stud 4 are omitted. Alternatively, the positioning portions 7a and 7b may be provided at both upper and lower ends of the frame body 20 so as to protrude.

In addition to the arrangement shown in FIG. 13, as shown in FIG. 14, positioning portions 7a and 7b may be protrudingly provided at the upper and lower central portions of the frame body 20 on the extension of the stud 4. -As shown in Fig. 15, it is also possible to use braces 21 instead of the studs 4. In this case, the positioning portions 7a and 7b can be protruded from both ends of the bracing 21 along the vertical direction.

In addition to the braces 21 shown in FIG.
May be changed to a rectangular strut 21 as shown in FIG. In this case, both ends of the bracing 21 may be protruded from the upper and lower end surfaces S3, S5 and the left and right end surfaces S4, S6 of the foam material 3, and the protruding portions may be used as the positioning portions 7a, 7b. The shaft set 1 corresponding to the positioning portions 7a, 7b
The engaging portions 8a and 8b may be formed on the one pillar 12 and the horizontal member 13, respectively.

As shown in FIG. 9, the cross section of the stud 4 may be formed in an I shape. Further, as shown in FIG. 10, both side surfaces of the stud 4 may be formed in a zigzag shape. Further, FIG.
As shown in FIG. 1, through holes 4a may be formed in the stud 4 at predetermined intervals along its longitudinal direction. And the through hole 4a
May be filled with the foam material 3. As described above, according to the building panel 1 shown in FIGS. 9 to 11, the adhesiveness of the foam material 3 to the stud 4 can be improved.

As shown in FIG. 12, the indoor side surface S2 of the foam material 3 and the joint surface S12 of the stud 4 may be flush. -A plurality of studs 4 or braces 21 may be provided. With this configuration, the strength of the entire building panel 1 can be further improved.

In addition to using the building panel 1 for heat insulation, it is also possible to use it for sound insulation. In this case, since the foam material 3 has closed cells, the sound insulation effect is enhanced.

9 instead of the inclined surface 3b of the foam material 3
As shown in FIG. 12, a round surface 3c that is visible from the indoor side surface S2 side of the foam material 3 may be formed. Next, in addition to the technical ideas described in the claims, technical ideas grasped by the above-described embodiments are listed below together with their effects.

(1) In any one of claims 1 and 2, the expansion ratio is set to 40 to 50 times. According to this configuration, the balance between the thermal conductivity and the strength of the foam material is further improved.

(2) In claim 4, the material for forming the foamed material is a polymer having no CN bond (carbon / nitrogen bond). (3) In claim 4, the polymer has a benzene ring in the molecular structure.

(4) In any one of claims 1 to 4, and (1) to (3), a thin portion is provided on the indoor side surface of the foam material, and the thin portion is formed at a position away from the reinforcing member. Then, a thick portion was provided between the thin portion and the reinforcing member.

According to this configuration, it is possible to prevent the foam material from peeling off from the reinforcing member. In addition, it is possible to prevent the strength of the entire building panel from decreasing.

[0054]

According to the first aspect of the present invention, the foam material can be recycled. At the same time, the strength of the foam material can be ensured even if the material of the foam material is changed to a recyclable material.

According to the second aspect of the present invention, a good balance between the thermal conductivity and the strength of the foam material is obtained. According to the invention of claim 3, for example, when a building panel is used for heat insulation, heat insulation can be improved, and when a building panel is used for sound insulation, sound insulation can be improved. be able to.

According to the fourth aspect of the present invention, generation of toxic gas can be prevented even when incinerated. At the same time, the strength of the foam material can be ensured.

[Brief description of the drawings]

FIG. 1 is a view of an architectural panel according to an embodiment as viewed from an indoor side.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged plan sectional view showing a part of a building panel.

FIG. 4 is an exploded perspective view showing a frame and a foam material.

FIG. 5 is a cross-sectional view before a building panel is fitted to a frame.

FIG. 6 is a cross-sectional view after the building panel has been fitted into the frame.

FIG. 7 is a view of a building panel according to another embodiment, in which face materials are omitted.

FIG. 8 is a sectional view taken along line BB of FIG. 7;

FIG. 9 is a plan sectional view of a building panel in which the shape of a stud has been changed.

FIG. 10 is a plan sectional view of a building panel having a shape different from that of the stud shown in FIG. 9;

FIG. 11 is a plan sectional view of a building panel having a different shape from the studs shown in FIGS. 9 and 10;

FIG. 12 is a plan sectional view of a building panel in which a foam material and a stud have the same side surface.

FIG. 13 is a diagram of an architectural panel in which a frame is provided in a foam material.

FIG. 14 is a front view of a building panel of a type different from that of FIG. 13;

FIG. 15 is a diagram of a building panel using bracing instead of studs.

FIG. 16 is a view of a type of building panel different from FIG. 15;

FIG. 17 is a perspective view of a building panel showing a conventional technique.

[Explanation of symbols]

 3 ... foam material, 4 ... stud (reinforcing member), 11 ... shaft set.

Claims (4)

[Claims] 1. An architectural panel provided between a frame of a wooden house and including a foam material and a reinforcing member, wherein the foam material is made of polystyrene,
An architectural panel, wherein the expansion ratio of the foam material is set to 30 to 70 times. 2. The building panel according to claim 1, wherein the expansion ratio is set to 35 to 60 times. 3. The building panel according to claim 1, wherein bubbles contained in the foam material are independent. 4. An architectural panel provided between a frame of a wooden house and including a foam material and a reinforcing member, wherein the foam material is converted into a polymer containing no nitrogen in a molecular structure. And the expansion ratio of the foamed material is 30 to
An architectural panel characterized by a setting of 70 times.