JPH07217015A - Insulation material used for wooden frame wall construction method - Google Patents

Abstract

(57) [Abstract] [Purpose] When performing heat insulation construction of a wooden frame wall construction method, it is possible to perform heat insulation construction of inner dimensions between various members with one type of width insulation material, material management Provide a heat insulating material that is easy to perform and has excellent workability and heat insulating properties. [Structure] A heat insulating material 1 made of a plate-like soft foam made of a synthetic resin, which is inserted between the timbers of floors or walls of a wooden frame wall construction method, wherein the inner dimensions of the single timbers are A [mm], and When the standard width is B [mm], the width dimension of the heat insulating material is formed to be a [mm], and the length direction of the heat insulating material is at a distance of b [mm] from the end on one side in the width direction of the heat insulating material. A slit P is provided along the width of the heat insulating material, and c
Slit Q along the longitudinal direction of the heat insulating material at a distance of [mm]
And a = A + (0.5 to 15) and b = (A−B /
2) + (0.5-15), c = (AB) + (0.5-
15).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating material used for heat insulating construction of a floor or wall of a building by a wooden frame wall construction method such as a two-by-four house. The present invention relates to a heat insulating material made of a plate-like soft foam.

[0002]

2. Description of the Related Art A building of a wooden frame wall construction method such as a two-by-four house has a cross-sectional size of 2 inches × 4 inches, and the standard cross-sectional size is a fixed size, and either one of the standard size and the length is the standard size. It has a structure in which the building is supported by the entire wall, mainly by using the nailing method, using wood with a cross-sectional length that is an integral multiple. Thermal insulation is performed by inserting a heat insulating material such as glass wool or foam between the woods constituting the floor or wall.

As the heat insulating material made of the above-mentioned foam, for example, JP-B-63-10010, column 1, line 23 to line 2
As described in column 6, line 6, the plate-shaped foam is provided with a protrusion, the end is inclined, the notch for bending is provided at the center in the width direction, and the end is cushioned. Known materials include those to which materials are attached, those in which V-shaped grooves are provided, and back materials are laminated. Further, in the above-mentioned publication, a cut is provided which divides the width dimension of the plate into two parts, which does not reach from the front surface to the back surface of the closed cell foam having a skin layer in which the compression elastic modulus and the bending elastic modulus are specified. Have been disclosed. Also, Japanese Utility Model Publication No. 63-43290 discloses a flexible plate-shaped foam body having a notch for bending at substantially the center and a plurality of notches arranged at the ends in parallel at intervals of 1 cm or less. .

By the way, in the wooden frame wall construction method, the distance between the centers of the timbers (standard distance between the timbers) is constant, but the inner dimension between the timbers is not necessarily constant. For example, in the case of floors, joists do not always use timber with a standard size width (single), but there are also parts that use joists with a double width (double) of the standard size. The dimension is shorter than the inner dimension between the joists in the case of only a single timber. Also in the case of walls, as in the case of floors, the distance between the center of the timber forming the pillar and the center of the adjacent timber is formed constant, but the width between the pillars is different from that of the pillar. There may be studs, and the internal dimensions between the columns of the wall are not always constant, and there are usually several types of inter-column internal dimensions. Therefore, conventionally, in order to install a heat insulating material such as foam or glass wool, a heat insulating material with a certain width dimension is cut into width dimensions according to various inner dimensions at the construction site and used. Construction was performed by preparing several types of heat insulating materials with different width dimensions according to the dimensions.

[0005]

However, the use of a plurality of types of heat insulating materials having different width dimensions has a problem that material management becomes complicated. On the other hand, when only one type of heat insulating material of a certain size is used and the installer processes the heat insulating material into various width dimensions on site, a mere plate-shaped foam body is cut on site to have an accurate width dimension. That is, the efficiency of the construction work is remarkably reduced, and it is actually very difficult to cut the work piece into an accurate size at the site, and the shape becomes inaccurate or the size accuracy is low. Therefore, there is a problem that the adhesion between the square member and the heat insulating material becomes insufficient, and good heat insulating performance cannot be exhibited.

Further, although the foam described in Japanese Utility Model Publication No. 63-43290 has its width dimension adjustable by notching the ends arranged in parallel with a large number of rows at intervals of 1 cm or less,
In the case of a foam body having a large number of cuts in a narrow region near the edge, the following problem occurs. The side with a large number of cuts has a different impact resilience compared to the side without cuts (residual side) because the closed cells of the foam are destroyed and the compression strength is reduced. After pressing between the joists, the flatness of the dents may decrease, or the adhesion of the heat insulating material to the joists may decrease, resulting in insufficient support of the heat insulating material between the joists and There is a problem that the insulation material falls off. As a result, when the floor board is laid from above after installing the heat insulating material,
A gap may be formed between the floor plate and the heat insulating material, which may reduce the heat insulating performance. If a large number of slits are present in the vicinity of the end, cutting error is likely to occur. If the width of the heat insulating material is cut longer than the specified size, it may be cut short, but if it is accidentally cut into the width smaller than the specified size, it becomes unusable. turn into. If a large number of slits are deeply provided from the end surface of the heat insulating material to the inside, the amount of width adjustment increases, but if the number of slits increases, the above-described warping and impact resilience decrease and the physical properties decrease, so There is a limit to providing a slit deep inside and increasing the width adjustment amount, and it is not possible to sufficiently cope with the case where the width adjustment amount is large. The present invention is intended to solve the above-mentioned drawbacks of the prior art, and when performing heat insulation construction of a wooden frame wall construction method,
It is an object of the present invention to provide a heat insulating material having three width dimensions, which can be heat-insulated to various inter-member dimensions, whose material management is easy, and which has excellent workability and heat insulating properties.

[0007]

The heat insulating material used in the wooden frame wall construction method of the present invention is a heat insulating material made of a plate-like soft foam made of synthetic resin that is pressed between the floors or wall squares of the wooden frame wall construction method. And the inner dimension between the single timbers is A [mm],
When the standard width of the single square member is B [mm], the width dimension of the heat insulating material is formed to be a [mm], and the heat insulating material is located at a distance of b [mm] from the end on one side in the width direction of the heat insulating material. A slit P is provided along the longitudinal direction of the heat insulating material, and a slit Q is provided along the longitudinal direction of the heat insulating material at a distance of c [mm] from the other end of the heat insulating material in the width direction, and a = A + (0 .5 to 15) b = (A−B / 2) + (0.5 to 15) c = (A−B) + (0.5 to 15).

In the heat insulating material used in the wooden frame wall construction method described above, it is preferable to provide a slit R between the slit P and the slit Q along the longitudinal direction of the heat insulating material.

Further, it is preferable that the slit R is provided substantially at the center of the heat insulating material in the width direction.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is an external perspective view showing an example of the heat insulating material of the present invention, FIG. 2 is a cross-sectional view in the width direction showing a state in which another example of the heat insulating material of the present invention is pressed between square pieces, and FIG. It is explanatory drawing which shows the usage example of a heat insulating material.

As shown in FIG. 1, the heat insulating material 1 of the wooden construction of the present invention is made of a synthetic resin plate-like soft foam and has a width dimension a.
[Mm] at a distance of b [mm] from one end in the width direction, slits P along the longitudinal direction of the heat insulating material, and c [mm] from the other end in the width direction of the heat insulating material. A slit Q along the longitudinal direction of the heat insulating material is provided in advance at a distance. The foam used for the heat insulating material of the present invention is a foam having substantially closed cells, and the slits P and the slits Q are formed as cuts having no width. The heat insulating material has excellent heat insulating properties whether it is a heat insulating material having a width a before cutting or a width b after cutting. As shown in FIG. 2, the heat insulating material 1 of the present invention is inserted between the squares 2 of the floor or wall and is supported between the squares by the impact resilience of the soft foam material for heat insulation. As for the floor, if necessary, the metal fitting 5 may be attached to the square member to prevent the heat insulating material from being pushed in too much or slipping off.

The width dimension a and the slit P of the heat insulating material of the present invention
The positions (b, c) at which the slits Q and the slits Q are provided are provided at specific positions according to the inner dimension A between the single square pieces 2 and the standard width B of the single square pieces.
The relationship between c and A and B is as follows. a = A + (0.5 to 15) b = (A−B / 2) + (0.5 to 15) c = (A−B) + (0.5 to 15)

That is, the above-mentioned a is 0.5 to 15 mm with respect to the inner dimension A between the single square members 2 as shown in FIG.
The width dimension is formed to be large in the range, and the heat insulating material having the width dimension a is used when being pressed between the single square members 2 in the state as it is.

The above b indicates the distance from one end of the slit P, and the width dimension b [mm] is obtained by cutting the heat insulating material formed as the width dimension a [mm] from the slit P on site. ] The heat insulating material of is obtained. As shown in FIG. 3A, the heat insulating material having the width dimension b is formed such that the width dimension is large within the range of 0.5 to 15 mm with respect to the inner dimension D between the double square member 3 and the single square member 2. Yes, the heat insulating material (1b) having the width dimension b is used when press-fitting between the single square piece 2 and the single-sided square piece 3.

The above c indicates the distance from the other end of the heat insulating material 1 to the slit Q, and the width is obtained by cutting the heat insulating material formed with the width dimension a [mm] from the slit Q on site. A heat insulating material having a dimension c [mm] is obtained. As shown in FIG. 3C, the heat insulating material (1c) having the width dimension c has a large width dimension within the range of 0.5 to 15 mm with respect to the inner dimension E between the double square members 3. The heat insulating material (1c) having the width dimension c is used when press-fitting between the double square members 3 and 3.

The above numerical values of a to c are formed within a range of +0.5 to 15 mm with respect to the internal dimensions A, D, and E between the square bars, but outside this numerical range, a value of less than +0.5. In this case, the adhesion with the wood becomes insufficient, and + 15m
If it exceeds m, the width dimension of each heat insulating material becomes too large with respect to the inner dimension between the square members, and press-fitting becomes difficult, and the workability deteriorates. Thus, the width dimension a is the inner dimension A between the single squares, the width b is the inner dimension D between the double squares and the single squares, and the width c is the inner dimension E between the double squares.
And the slits P,
Just by cutting from Q, the width of the heat insulation material that corresponds to each dimension can be obtained accurately, and the elasticity of the soft foam made of synthetic resin ensures the press-fitting between the squares and ensures the heat insulation material after the construction. By holding it, it is possible to perform the heat insulation construction of the inner dimension between the square members at three locations with one heat insulating material.

FIG. 4 is a plan view showing an example of using the heat insulating material of the present invention on the floor of a two-by-four house. As shown at the bottom in the drawing of FIG. 4, the double square timber 3 and the double square timber 3
Even if the square pieces are arranged according to, the square pieces may be arranged such that there is a portion 4 where the double square pieces are cut in the middle. In such a case, in order to use the heat insulating material 1 of the present invention, the heat insulating material 1a is cut halfway in the longitudinal direction along the slit Q, and the portion corresponding to the cut portion 4 of the double square member 3 is heat insulated. Width a up to the middle of the material
From there, it is used as the width dimension c corresponding to the double square bar 3. More preferable values of the above a, b, and c are as in the following formulas (1) to (3). a = A + (2 to 13) ... (1) b = (A + B / 2) + (2 to 13) ... (2) c = (A−B) + (2 to 13) ... ( 3)

In FIG. 4, the double lumber 3 is located inside (the upper side shown in FIG. 4) of the double lumber in which the portion 4 in which the lumber is cut is formed, and the inner dimension between the lumber is E, The heat insulating material is cut from the slit Q and inserted as the heat insulating material 1c. Next, when the single timber 2 comes inside the double timber 3, it becomes a double timber-single timber and the inner dimension between the timber is D, and the heat insulating material is cut from the slit P to use the heat insulating material 1b. When the single timber 2 comes to the, the single timber-single timber becomes a single timber and the inner dimension between the timbers becomes A, and the heat insulating material is used as it is as the heat insulating material 1a without being cut from the slit.

Although FIG. 4 has been described as an example of the case of being used as the heat insulating material for the floor of the two-by-four house of the present invention, FIG.
As shown in (1), the heat insulating material of the present invention can be used in the same manner as in the case of the wall when used as a wall heat insulating material for a two-by-four house. As shown in FIG. 5, from the end of the wall (for example, the left end in FIG. 5), a double timber 3-
Single timber 2-Single timber 2 ... Double timber 3-
When the timbers are arranged such as the double timbers 3, the heat insulating materials are sequentially arranged from the left end, 1b, 1a ...
..Used like 1c.

In the present invention, the internal dimension A between single squares, the standard width B of single squares, the internal dimension D between double squares and single squares, and the internal dimension E between double squares are all design values. Further, in the present invention, the width direction of the heat insulating material is a direction orthogonal to the square material, and the longitudinal direction of the heat insulating material is a direction along the longitudinal direction of the square material. In the heat insulating material of the present invention, the slits P and Q are formed as notches having a width, and the heat insulating material is not easily separated from the slit in the usual handling, but if the human hand bends and tears the slit, the slits are cut. It is preferable that the cut surface is formed so that it can be easily separated from the cut piece and the cut surface fits the timber. Specifically, a cut is made vertically from one surface of the plate-like soft foam toward the back surface side, and a residual portion is formed so that the cut does not reach the back surface side. The thickness of the remaining portion (the thickness of the heat insulating material-the depth of the slit) may be appropriately adjusted according to the material and thickness of the foam,
Preferably 0.5 to 10 mm, more preferably 1 to 7 mm
To form.

As shown in FIG. 2, the heat insulating material 1 of the present invention may have another slit R between the slit P and the slit Q. The slits R are used to facilitate bending when the heat insulating material is press-fitted between the square members and further facilitate the insertion. Similar to the slits P and Q, the slit R has a linear notch formed from one surface of the plate-like soft foam toward the back surface, and a residual portion is formed so that the notch does not reach the back surface. Is used. In addition, the slit R is not limited to a linear cut as long as it can bend the heat insulating material and assists the insertion between the timbers, and the cross section has a curved shape, an oblique line shape, a polygonal line shape, a shape combining a curved line and a polygonal line,
It can be provided in multiple lines or intermittently. The slit R may be provided between the slit P and the slit Q, but it is preferably provided near the center of the heat insulating material 1 in the width direction.

When the slits R are provided as cuts similar to the slits P and Q, the depth of each slit is formed to the same depth as the slits P and Q described above. The slits may have different depths, in which case the slits P,
It is preferable that Q is formed deep and the slit R is formed shallow. When formed in this way, it is possible to prevent accidental cutting from the slit R when the heat insulating material is cut from the slit P or the slit Q.

The length d and the thickness e of the heat insulating material 1 of the present invention are not particularly limited, but it is preferable that the length d is 900 to 2000 mm and the thickness e is about 20 to 100 mm.

Table 1 below shows a relationship between an example of design dimensions and various dimensions of a preferable heat insulating material according to the dimensions.

[0027]

[Table 1]

The synthetic resin plate-like soft foam used in the present invention is a closed-cell foam, has flexibility, is compressible, and is unlikely to break or break when the foam plate is bent, A material that can be compressed and inserted between square members with a spacing smaller than the width of the heat insulating material, and has the property of having a repulsive elasticity and the end portion of the heat insulating material and the member are in close contact when pressed between the square materials. Is.

The synthetic resin plate-like soft foam is preferably formed by extrusion foam molding or bead foam molding of a polyolefin resin or a polystyrene resin containing a rubber component. In particular, the foamed bead molding is more preferable because a foam having uniform strength can be obtained over the whole. This is because the extruded foamed product is stretched more strongly in the direction (width direction) orthogonal to the extrusion direction (longitudinal direction) during molding, so that the strength near the ends in the width direction is lower than in the longitudinal direction. However, there is a risk that the repulsive force will decrease over time after the heat insulating material is pressed between the square members and the holding between the square members will be insufficient, whereas the bead foam molding has a strong strength due to the directionality. There is no difference and uniform strength is obtained,
This is because the heat insulating material can be reliably held between the square members for a long period of time, and good heat insulating performance can be maintained.

As the base resin of the above-mentioned polyolefin resin, high density polyethylene, medium density polyethylene, low density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, propylene and 4 to 8 carbon atoms are used. Of the copolymer with α-olefin, ethylene-propylene-butene terpolymer, etc., or a mixture of two or more thereof, or a copolymer containing these as the main components, or a mixture. be able to. Of the above-mentioned base resins, the propylene component is 9
A random copolymer having 0 to 99% by weight and an ethylene component of 1 to 10% by weight is preferable. These polyolefin resins may be non-crosslinked or crosslinked. Further, a rubber component such as ethylene-propylene rubber, isoprene rubber or butadiene rubber may be mixed with the polyolefin resin up to about 25% by weight.

As the polystyrene resin containing a rubber component, a base resin containing 0.5 to 20% by weight of a rubber component by blending or copolymerization is used. As the above-mentioned base resin, a polymer having a styrene-based vinyl monomer such as styrene, methylstyrene or dimethylstyrene as a main constituent unit, and further other monomers such as acrylic acid, methacrylic acid or their esters, acrylonitrile, acrylamide , Methacrylnitrile, and a copolymer with maleic anhydride. On the other hand, the rubber component may be a blend of butadiene rubber, ethylene-propylene rubber, styrene-butadiene rubber, polyethylene or the like, or a monomer or oligomer such as butadiene, isoprene or chloroprene that constitutes the above-mentioned base resin (other monomers may also be used. (Including) used by copolymerizing at a predetermined weight ratio.

The above base resin is magnesium hydroxide,
A mixture of 5 to 40% by weight of an inorganic substance such as calcium carbonate, talc, mica or clay may be used, which can improve the quasi-incombustibility and heat resistance important for building materials. Further, it is preferable to add 3 to 15% by weight of a flame retardant such as a bromine compound or a phosphorus compound to the base resin.

To produce a foam by bead foaming,
For example, in a mold for molding, in which foamed particles are produced from a mixture of a base resin containing various additives as required, and the foamed particles are formed into a predetermined shape of a heat insulating material that can be closed but cannot be closed. The foamed particles, which fill the voids between the foamed particles and heat the foamed particles with water vapor at a temperature at which the foamed particles can be fused to each other to cause the particles to fuse to each other, and then to cool them to form the mold Is obtained. If necessary, the expanded particles may be aged under pressure with an inorganic gas or a mixed gas of an inorganic gas and a volatile foaming agent to give a predetermined internal pressure to the particles.

For the production of expanded beads, the following means, for example, are used. After melt-kneading the base resin in an extruder, extruding it into a strand shape, then cooling and then cutting to an appropriate length, or cutting to an appropriate length and then cooling, etc., first to form pelletized resin particles. The resin particles produced are dispersed in a dispersion medium such as water in the presence of a foaming agent in a closed container, and the resin particles are heated to a softening temperature or higher to impregnate the resin particles with the foaming agent. After that, open one end of the container and release the resin particles and water at the same time under a lower pressure atmosphere (usually under atmospheric pressure) while maintaining the pressure inside the container at a pressure equal to or higher than the vapor pressure of the foaming agent. To foam resin particles to produce expanded particles, and in the case of polystyrene resin containing rubber, a)
When the monomer is polymerized in an autoclave, a foaming agent is added to polymerize to form spherical resin particles containing the foaming agent,
The resin particles are taken out of the autoclave in a non-foamed state, and the resin particles are heated by steam or the like to be foamed to obtain pre-expanded particles. B) Monomers are polymerized to obtain spherical resin particles, and then the resin particles are added to the resin particles. After impregnating the foaming agent in the autoclave, the resin particles containing the foaming agent in an unfoamed state are taken out from the autoclave and heated by steam to be foamed to obtain pre-expanded particles, etc., to obtain expanded particles with a higher expansion ratio. In this case, the above-mentioned foaming agent impregnation and the foaming step are repeated a plurality of times (multi-stage foaming). In particular, when a polyolefin resin is used as the base resin, particles having a high expansion ratio can be easily obtained by using the above means. Further, in the case of polystyrene-based resin, expanded particles having a high expansion ratio can be easily obtained even with one-stage expansion. The base resin for producing the expanded beads may be a non-crosslinked one or a crosslinked one as described above, but in the case of producing the expanded beads of a crosslinked polyolefin resin, it is not crosslinked. The above resin particles are produced from the above resin, and the resin particles are appropriately treated to form crosslinked resin particles, which are then foamed to obtain crosslinked resin expanded particles.

Examples of the foaming agent for foaming the resin particles include propane, butane, pentane, hexane, cyclobutane, cyclohexane, trichlorofluoromethane, dichlorodifluoromethane, chlorofluoromethane, trifluoromethane, 1,2,2, 2-tetrafluoroethane, 1-chloro-
Volatile foaming agents such as 1,1-difluoroethane, 1,1-difluoroethane, 1-chloro-1,2,2,2-tetrafluoroethane and inorganic gas-based foaming agents such as nitrogen, carbon dioxide, argon and air Can be used. Among them, an inorganic gas-based foaming agent that does not destroy the ozone layer and is inexpensive is preferable, and one containing nitrogen, air or carbon dioxide as a main component is particularly preferable.
Further, a mixed foaming agent of a volatile foaming agent and an inorganic gas type foaming agent is also preferable from the viewpoint of easy control of the expansion ratio of the resin particles. Further, the amount of the foaming agent used is usually 2 to 50 parts by weight per 100 parts by weight of the resin particles, and when nitrogen or air is used as the foaming agent, the container is used within a pressure range of ^{20 to} 60 kgf / cm ² · G. The amount of the foaming agent used is appropriately selected depending on the relationship between the expansion ratio of the expanded particles to be obtained and the expansion temperature. The dispersion medium for dispersing the resin particles may be one that does not dissolve the resin particles, and examples of such a dispersion medium include water, ethylene glycol, glycerin, methanol, ethanol and the like, but usually water. Is used.

In such means, when the resin particles are dispersed in the dispersion medium and heated to the foaming temperature, an anti-fusion agent can be used to prevent the resin particles from being fused to each other. As the anti-fusing agent, an inorganic type or an organic type can be used as long as it does not dissolve in water or the like and does not melt by heating, but an inorganic type is generally preferable. As the inorganic anti-fusing agent, powders of kaolin, talc, mica, aluminum oxide, titanium oxide, aluminum hydroxide and the like are suitable. Further, anionic surfactants such as sodium dodecylbenzene sulfonate and sodium oleate can be preferably used as a dispersion aid. The fusion preventing agent has an average particle size of 0.001
˜100 μm, especially 0.001 to 30 μm, and the amount of the fusion inhibitor added is usually 0.01 to 10 parts by weight per 100 parts by weight of the resin particles. The surfactant is usually 0.001 to 100 parts by weight of the resin particles.
It is preferable to add 5 parts by weight.

Further, the foaming temperature at which the resin particles and the dispersion medium are discharged from the container under a low-pressure atmosphere for foaming, the type of resin generally used (including whether or not it is crosslinked), the foaming agent Although it differs depending on the type and the amount used, as an example, when non-crosslinked polyolefin resin particles are used as a resin and an inorganic gas type is used as a foaming agent, the melting point of the resin is -5 ° C or higher. Melting point + 15 ° C or less,
In particular, the melting point is preferably -3 ° C or higher and the melting point + 10 ° C or lower. When the crosslinked polyolefin-based resin particles are foamed using an inorganic gas-based foaming agent and / or an organic volatile foaming agent, the melting point before crosslinking and the melting point + 80 ° C are preferable. Furthermore, it is preferable that the temperature rise temperature at the time of heating to the foaming temperature is 1 to 10 ° C./min, particularly 2 to 5 ° C./min. The atmosphere in which the expandable resin particles and the dispersion medium are released from the container may be at a lower pressure than the container, but is usually at atmospheric pressure. In addition, the melting point of the above-mentioned resin is measured by a differential scanning calorimeter,
Heat to 220 ° C at a heating rate of ° C / min, then 10 ° C
It is the temperature at the top of the endothermic peak (inherent peak) in the DSC curve obtained when the temperature is cooled to about 50 ° C. at a cooling rate of / min and the temperature is raised to 220 ° C. at a rate of 10 ° C./min again.

The density of the foam used in the heat insulating material of the present invention is appropriately selected according to the kind of the base resin, etc., but is usually 0.005 to 0.050 g / cm ³ , and more preferably 0. It is 007 to 0.015 g / cm ³ . Within this range, better flexibility, strength and the like can be exhibited. When the density is less than 0.025 g / cm ³ , the resin becomes too flexible and the adhesion to the member is good, but the strength decreases, and particularly when it is less than 0.005 g / cm ³ , the strength deteriorates. On the other hand, when the density is more than 0.050 g / cm ³ , the flexibility is poor and the adhesion is lowered.

The foam used in the present invention, initial compression modulus is formed in 0.1 kg / cm ² or more ~40kg / cm ² or less. Further, when a foam is molded, a skin layer is formed on the outer surface of the foam, and the skin layer provided on the side opposite to the cut functions as a hinge, but a polypropylene resin is used as the base resin of the foam. When used, the polymer itself has excellent hinge properties, so that a skin layer is not particularly required. For example, when a foam molded to be thicker than a predetermined thickness is sliced from the thickness direction to obtain a plurality of foams having a predetermined thickness, a cut surface of the foam does not have a skin layer, but a polypropylene resin foam. In the case of, the hinge function can be obtained even on the surface without the skin layer.

The heat insulating material of the present invention can be obtained by making a slit in a plate-like foam body formed as described above at a predetermined position with a normal cutter or the like to form each slit.

[0041]

As described above, the heat insulating material used in the wooden frame wall construction method of the present invention is made of a plate-like soft foam made of synthetic resin and has a width dimension of a [mm] = A + (0.5 to 15). And b [mm] = from the end on one side in the width direction of the heat insulating material
A slit P is provided along the longitudinal direction of the heat insulating material at a distance of (A−B / 2) + (0.5 to 15), and c [mm] = (A -B) + (0.5 ~
By providing the slits Q along the longitudinal direction of the heat insulating material at the distance of 15), the width dimension b and the width in addition to the heat insulating material of the width dimension a can be obtained only by cutting the heat insulating material of the present invention along each slit. A heat insulating material having a dimension c can be easily obtained. Since these three types of heat insulation materials have width dimensions that accurately correspond to the inner dimensions between the three types of square bars, multiple heat insulation materials with different width dimensions are prepared according to the distance between the square bars, as in the past. You don't have to. Furthermore, since cutting of the heat insulating material may be performed along the slit,
It is possible to easily and accurately cut on site with a hand or a cutter. As a result, a heat insulating material having excellent workability and having a good cross-sectional shape corresponding to each dimension can be obtained, so that the heat insulating material adheres well between the square members and can maintain the excellent heat insulating property for a long period of time. Further, since the slits are provided in the heat insulating material at the minimum necessary amount, there is no problem such as deterioration of heat insulating property due to deterioration of physical properties such as impact resilience between the front and back surfaces of the heat insulating material and deterioration of flatness.

Further, in the above heat insulating material, a slit R is provided between the slit P and the slit Q along the longitudinal direction of the heat insulating material.
In the case where the above is provided, the slit R can be bent to more easily press fit between the square bars or columns.
When the slit R is provided substantially at the center in the width direction of the heat insulating material, the above effect can be reliably obtained even when the slit R is cut from the slit P or the slit Q.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an example of a heat insulating material of the present invention.

FIG. 2 is a cross-sectional view in the width direction showing another example of the heat insulating material of the present invention in a state of being press-fitted between square pieces.

FIG. 3 is an explanatory diagram showing a usage example of the heat insulating material of the present invention.

FIG. 4 is an explanatory diagram when the heat insulating material of the present invention is used as a heat insulating material for a floor of a two-by-four house.

FIG. 5 is an explanatory diagram when the heat insulating material of the present invention is used as a wall heat insulating material for a two-by-four house.

[Explanation of symbols]

1 ... Insulation material 2 ... Single square material 3 ... Double square material P, Q, R ... Slit A ... Inner dimension between single square materials B ... Standard width of single square material a ... Width dimension of the heat insulating material b ... Distance from one end in the width direction of the heat insulating material to the slit P c ... Distance from the other end in the width direction of the heat insulating material to the slit Q

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 25, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0029

[Correction method] Change

[Correction content]

The synthetic resin plate-like soft foam is preferably formed by extrusion foam molding or bead foam molding of a polyolefin resin or a polystyrene resin containing a rubber component. In particular, the foamed bead molding is more preferable because a foam having uniform strength can be obtained over the whole. This extrusion by expanded molded to extrusion direction during molding (longitudinal direction) is from strong <br/> Ku stretched direction (width direction) perpendicular to the said direction, lower than the longitudinal strength in the width direction However, there is a risk that the repulsive force will decrease over time after the heat insulating material is pressed between the square members and the holding between the square members will be insufficient, whereas the bead foam molding has a strong strength due to the directionality. This is because there is no difference and uniform strength is obtained as a whole, and the heat insulating material can be reliably held between the square members for a long period of time to maintain good heat insulating performance.

Claims (3)

[Claims] 1. A heat insulating material made of a plate-like soft foam made of synthetic resin, which is inserted between square timbers of floors or walls of a wooden frame wall construction method, wherein the inner dimensions of the single timbers are A [mm]. When the standard width of the heat insulating material is B [mm], the width dimension of the heat insulating material is a [mm], and the length of the heat insulating material is at a distance of b [mm] from the end on one side in the width direction of the heat insulating material. A slit P is provided along the direction, and a slit Q is provided along the longitudinal direction of the heat insulating material at a distance of c [mm] from the other end of the heat insulating material in the width direction, and a = A + (0.5 ˜15) b = (A−B / 2) + (0.5˜15) c = (A−B) + (0.5˜15) The heat insulating material used for the wooden frame wall construction method. . 2. The heat insulating material used in the wooden frame wall construction method according to claim 1, wherein a slit R is provided between the slit P and the slit Q along the longitudinal direction of the heat insulating material. 3. The heat insulating material used in the wooden frame wall construction method according to claim 2, wherein the slit R is provided substantially at the center of the heat insulating material in the width direction.