JP3183686U - Thermal insulation board for houses - Google Patents

Abstract

[PROBLEMS] To propose a heat insulating plate for a house made of a polystyrene resin extruded foam which has good workability when pressed between square members of a roof, a ceiling, a floor or a wall, and is hardly damaged. .
[Solution]
A heat insulating plate for a house made of a long, substantially rectangular parallelepiped polystyrene resin foam disposed between square members of a roof, a ceiling, a floor, or a wall of a house, wherein a side surface 1a of the heat insulating plate 1 has a lower end. Is an inclined surface located inward of the upper end, and a groove 2 extending in parallel with the side end portion is formed in the vicinity of the side end portion 1c of the upper surface of the heat insulating plate 1, and the deepest portion 2a of the groove 2 is formed. It was set as the heat insulation board for houses in which the cross-sectional shape was formed in the U shape.
[Selection] Figure 2

Description

  The present invention is based on a heat insulating plate for a house, particularly a polystyrene resin extruded foam (hereinafter also simply referred to as “extruded foam”), which is disposed between square members of a roof, ceiling, floor or wall of a house. It is related with the heat insulating board for house (it may only be called a "heat insulating board" hereafter).

2. Description of the Related Art Conventionally, for the purpose of improving heat insulation, a heat insulating material is provided between square members of a roof, a ceiling, a floor, or a wall of a house. As such a heat insulating material, a polystyrene-based resin extruded foam has excellent heat insulating properties and mechanical strength, so that it is widely used as a heat insulating plate for a house because it is molded into a long plate shape. . In this case, it is important for improving the heat insulating property that the both side surfaces of the disposed heat insulating plate are in close contact with the side surfaces of the square members.
Here, for example, in the case of a floor, the size between the joists that install the heat insulating plate may be slightly out of order, so when installing the heat insulating plate formed to a predetermined size, it is arranged without a gap. In some cases, the padding adjustment and the cut adjustment at the construction site are forced to be performed, and the effectiveness is reduced. This is also a problem that occurs in the same manner when a heat insulating plate is provided on the roof, ceiling, or wall.

  Accordingly, a technique has been proposed in which a groove extending in the longitudinal direction is formed on the plate surface of the heat insulating plate, a dimensional error between the square members is absorbed by the groove, and the heat insulating plate is disposed between the square members without a gap (for example, a patent). Reference 1).

Japanese Utility Model Publication No. 64-24207

  However, in the conventional heat insulating plate described in Patent Document 1 and the like, as shown in FIG. 7A, the side surface is inclined in consideration of the ease of insertion of the heat insulating plate between the square members. If the force from the side is excessively applied at the time of enforcement because of the surface, stress tends to concentrate at the corner of the deepest part of the groove as shown in FIG. 7 (b), and cracks start from the corner. There was a problem that occurred.

  The present invention has been made in view of the problems of the background art described above, and its purpose is that when the work is performed by press-fitting between square members of a roof, a ceiling, a floor, or a wall, its workability is good. Another object of the present invention is to propose a residential heat insulating plate made of a polystyrene resin extruded foam, which is less prone to breakage such as cracking.

In order to solve the above-described problems, the present invention provides a residential heat insulating plate described in the following [1] to [8].
[1] A residential heat insulating plate made of a polystyrene resin extruded foam having a substantially rectangular parallelepiped shape and disposed between square members of a roof, ceiling, floor or wall of a house, and disposed between the square members. In this case, the side surface of the heat insulating plate on the side in contact with the square member is an inclined surface whose lower end is located inward of the upper end, A residential heat insulating plate, characterized in that a groove extending in parallel with the portion is formed, and the cross-sectional shape of the deepest portion of the groove is formed in a U shape.
[2] The heat insulation for a house according to the above [1], wherein the U-shaped radius of the deepest part of the groove is formed to be 1/2 to 1 times the width of the groove. Board.
[3] The portion from the groove forming portion to the side end portion on the upper surface of the heat insulating plate is an inclined surface in which the side end portion is located below the groove forming portion, and the inclined side surface and the inclined surface are inclined. The heat insulating plate for a house according to the above [1] or [2], wherein the meeting portion with the upper surface is formed at a substantially right angle.
[4] The base resin of the polystyrene resin extruded foam is a mixture of polystyrene and a thermoplastic resin other than polystyrene, characterized in that it is any one of [1] to [3] above Thermal insulation board for houses.
[5] The thermoplastic resin other than polystyrene is one or more polyester resins selected from spiro glycol-modified polyethylene terephthalate, 1,4-cyclohexanedimethanol-modified polyethylene terephthalate and neopentyl glycol-modified polyethylene terephthalate, The mixing ratio of the polyester resin is 5 to 100 parts by weight with respect to 100 parts by weight of polystyrene.
[6] The thermoplastic resin other than the polystyrene is a styrene-methyl methacrylate copolymer and / or polymethyl methacrylate, and the methyl methacrylate component in the mixture is 4 to 45% by weight. The heat insulation board for houses according to [4] above.
[7] The polystyrene resin extruded foam contains 0.3 or more of one or more inorganic particles selected from graphite, carbon black, titanium oxide, aluminum oxide, zinc oxide and barium sulfate with respect to 100 parts by weight of the base resin. The heat insulating board for houses according to any one of the above [1] to [6], characterized by containing at least parts by weight.
[8] The residential heat insulating plate according to any one of [1] to [7], wherein an average cell diameter of the extruded polystyrene-based resin is 0.05 to 0.30 mm.

  According to the above-described heat insulating board for a house according to the present invention, since the cross-sectional shape of the deepest part of the groove formed to absorb the dimensional error between the square members is formed in a U shape, the side surface of the heat insulating board is closer to the bottom. Even if it is tilted inward, stress concentration does not easily occur when side force is excessively applied at the time of enforcement, and breakage such as cracking is unlikely to occur, making it easy to insert between square members. The workability will be good.

It is the perspective view which showed one Embodiment of the heat insulation board for houses which concerns on this invention. It is a front view of the heat insulating board for houses shown in FIG. It is the elements on larger scale of the heat insulating board for houses shown in FIG. It is the conceptual perspective view which showed the state which inserts the heat insulating board for houses shown in FIG. It is the elements on larger scale which showed the state after inserting the heat insulating board for houses shown in FIG. It is the enlarged view of the groove part formed in the test body, (a) is the figure which showed the groove | channel of the example goods whose deepest part is a U type, (b) is the figure which showed the groove | channel of the comparative example goods whose deepest part is a square shape. is there. It is an enlarged view of the groove part of the conventional heat insulation board for houses, (a) shows the state before the force from the side is applied, (b) shows the state where the force from the side is applied and the crack occurs. FIG.

  Hereinafter, an embodiment of a heat insulating board for a house concerning the above-mentioned present invention is described in detail based on a drawing.

  The heat insulating plate for a house according to the present invention is made of a polystyrene resin extruded foam, and the heat insulating plate 1 for a house made of the polystyrene resin extruded foam has a lower surface width of 263 mm and a length of 1820 mm in the illustrated embodiment. The long, substantially rectangular parallelepiped shape having a thickness of 50 mm is formed.

  As shown in FIGS. 1 and 2, the residential heat insulating plate 1 has the side end portion 1 c near the side end portions 1 c and 1 c located at the upper ends of both side surfaces 1 a and 1 a in the longitudinal direction of the upper surface 1 b. The grooves 2 and 2 extending in the longitudinal direction are formed in parallel with each other, and the cross-sectional shape of the deepest portion 2a of the groove 2 is formed in a U shape.

  Specifically, the groove 2 has a depth of 33 mm in the thickness direction of the heat insulating plate over the entire length in the longitudinal direction of the heat insulating plate in parallel with the side end portion 1 c at positions 15 mm apart from the side end portion 1 c in the horizontal direction. The U-shaped radius of the deepest portion 2a is 2 mm, which is ½ times the width of the groove 2. Note that if the U-shaped radius of the deepest portion 2a of the groove 2 is formed to be 1/2 to 1 times as long as the width of the groove 2, stress concentration is unlikely to occur. What is necessary is just to be formed. In particular, it is preferable that the U-shaped shape of the deepest portion 2a is formed with a radius that is 1/2 to 2/3 times the width of the groove 2.

  Moreover, both the side surfaces 1a and 1a of the heat insulation board 1 for houses are each formed as an inclined surface in which a lower end is located inward rather than an upper end. The upper surfaces 1b 'and 1b' from the upper ends 2b and 2b of the grooves 2 and 2 to the side end portions 1c and 1c are inclined surfaces with the side end portions 1c positioned below the upper end 2b. The formed meeting portions (side end portions) 1c and 1c of the inclined side surfaces 1a and 1a and the inclined upper surfaces 1b ′ and 1b ′ are preferably formed at substantially right angles.

  Specifically, in the illustrated embodiment, the side surface 1a is an inclined surface whose angle α shown in FIG. 3 is 8 degrees with respect to the vertical direction (thickness direction of the heat insulating plate) and whose lower end is located inward. The upper surface 1b ′ in the vicinity of the side end 1c is an inclined surface in which the angle β shown in FIG. 3 is 8 degrees with respect to the horizontal direction and the side end 1c is positioned below, and both the inclined surfaces 1a, 1b ′ The meeting part (side end part) 1c is formed at a right angle.

  Further, in the residential heat insulating plate 1 of the illustrated embodiment, two slits 3, 3 extending in the longitudinal direction in parallel with the side end portion 1e are formed on the lower surface 1d. The slit 3 is used to cut the heat insulating plate 1 in accordance with the interval between the square members into which the heat insulating plate 1 is inserted, for example, between joists. One slit 3 is one side end 1e of the lower surface 1d. 72 mm from the other side, the other slit 3 is located at a position 80 mm from the other side end 1 e ″ of the lower surface 1 d in the thickness direction of the heat insulating plate over the entire length in the longitudinal direction in parallel with the side end 1 e of the heat insulating plate. Each of them is formed with a depth of 17 mm and a width of 1 mm.

  The residential heat insulating plate 1 according to the present invention configured as described above is used as follows.

  FIG. 4 is a conceptual perspective view showing a state in which the heat insulating board 1 for a house according to the present invention is inserted between joists on a large pull, in which 11 is a bunch stone, 12 is a bunch stone A floor bundle placed above, 13 is a large pull placed between the floor bundles, and 14 is a joist installed on the large pull. And the heat insulating board 1 for houses which concerns on this invention is inserted and arrange | positioned between the joists 14, 14, the flooring which is not shown in figure is stretched above it, and a floor is completed.

  The interval between the joists 14, 14 is 260 mm, and the above-described heat insulating plate 1 for a house having a width of 263 mm is inserted and disposed therebetween. In the insertion, as shown in FIG. 4, the heat insulating plate 1 is pushed between the joists 14 and 14 from above, and the side surface 1 a of the heat insulating plate 1 is aligned with the side end 14 a of the joists 14. The heat insulating plate 1 can be pushed in easily because the side surface 1a is an inclined surface with the lower end positioned inward.

  Further, since the width of the heat insulating plate 1 is designed to be slightly larger than the interval between the joists 14, 14, the compressive force acts from the side by pushing, and the groove 2 is pushed as shown in FIG. Since it is crushed and there is no gap near the upper end of the groove, the inclined side surface 1a rises in the vertical direction, and the inclined upper surface 1b 'lies in the horizontal direction, so that it is between and above the heat insulating plate 1 and the joists 14. A gap is not generated between the stretched floor material (not shown), and good heat insulating performance can be obtained.

  At this time, even if there is a slight error in the distance between the joists 14 and 14 where the heat insulating plate 1 is disposed, the heat insulating plate 1 in which the groove 2 is formed has its dimensional error in the portion of the groove 2. Can be absorbed, and can be inserted and arranged without difficulty. Moreover, since the deepest part 2a of the groove | channel 2 formed in order to absorb the said dimensional error was formed in the heat insulation board 1 which concerns on this invention in the U shape, the force from the side was added excessively at the time of enforcement. Even in the case, or even when the extruded foam constituting the heat insulating plate is somewhat weak in mechanical strength, stress concentration hardly occurs, and breakage such as cracks hardly occurs. Furthermore, according to the heat insulating plate 1 according to the present invention, since the side surface 1a is an inclined surface whose lower end is located inward, the insertion work between the square members is facilitated as described above.

The above-mentioned heat insulating board 1 for a house according to the present invention is made of a polystyrene resin extruded foam.
The base resin constituting the extruded foam has a polystyrene resin as a main component. Examples of polystyrene resins include styrene-acrylic acid copolymer, styrene-methacrylic acid copolymer, styrene-maleic anhydride copolymer, styrene-methyl methacrylate copolymer, styrene Examples include acrylonitrile copolymer and styrene-methylstyrene copolymer. The styrene unit component content in the styrene copolymer is preferably 50 mol% or more, more preferably 80 mol% or more. In addition, having a polystyrene resin as a main component means that the base resin contains 50% by weight or more of a polystyrene resin.

  From the viewpoint of improving the heat insulation and heat resistance of the heat insulating plate, a mixture of polystyrene and a thermoplastic resin other than polystyrene can be used as the base resin of the polystyrene resin extruded foam. Such an extruded foam is likely to have lower mechanical strength than a general extruded foam having only polystyrene as a base resin, and cracks are likely to be generated from the groove when used as a heat insulating plate. However, even in the case of a heat insulating plate made of an extruded foam using the above mixture as a base resin, cracks are effective at the time of production, transportation, and construction by making the shape of the groove specific as in the present invention. Can be prevented.

  In particular, in order to maintain the high heat insulating property of the heat insulating plate over a long period of time, polystyrene, spiroglycol-modified polyethylene terephthalate (hereinafter, also referred to as “polyethylene terephthalate”), 1,4-cyclohexanedimethanol-modified PET, It is preferable to use a mixture of non-crystalline or low-crystalline modified PET such as neopentyl glycol-modified PET as a base resin for polystyrene resin extruded foam. In this case, the mixing ratio of the modified PET is preferably 5 to 100 parts by weight, more preferably 5 to 50 parts by weight, and further preferably 5 to 30 parts by weight with respect to 100 parts by weight of polystyrene. In addition, the said modification | denaturation means copolymerizing other glycol components, such as the said spiroglycol, with an ethylene glycol component as a glycol component in PET.

  The non-crystalline or low-crystalline polyester resin described in JIS K7122 (1987) is “when the heat of fusion is measured after performing a certain heat treatment” (the heating rate and cooling rate in adjusting the condition of the test piece are The endothermic peak calorific value associated with the melting of the polyester resin based on the DSC curve obtained at a heating rate of 10 ° C./min using a heat flux differential scanning calorimeter is adopted. The condition of less than 5 J / g (including 0) is satisfied.

  In addition, in order to maintain the high heat insulating property of the heat insulating plate over a long period of time, a mixture of polystyrene and an acrylic resin such as styrene-methyl methacrylate copolymer or polymethyl methacrylate is used as a base of the polystyrene resin extruded foam. It can also be a resin material. In this case, it is preferable to mix | blend an acrylic resin so that a methyl methacrylate component may be 4-45 weight% in mixed resin, and it is more preferable to mix | blend an acrylic resin so that it may become 10-30 weight%.

  In addition, blending inorganic particles such as graphite, carbon black, titanium oxide, zinc oxide, aluminum oxide and barium sulfate with polystyrene resin extruded foam from the viewpoint of maintaining the high thermal insulation of the heat insulating plate over a long period of time. Can do. The content of the inorganic particles is preferably 0.3 parts by weight or more, more preferably 0.5 to 12 parts by weight with respect to 100 parts by weight of the base resin constituting the polystyrene resin extruded foam plate. Among these inorganic particles, since the effect of improving heat insulation is particularly high, it is preferable to use graphite and titanium oxide in combination, and the graphite content is 0.3 to 5 with respect to 100 parts by weight of the base resin. Preferably, the content of titanium oxide is 2 parts by weight or more, and the ratio of the content of titanium oxide to the content of graphite is 2 or more. Such an extruded foam is likely to have lower mechanical strength than a general extruded foam that does not contain the inorganic particles, and cracks are likely to be generated from the groove when used as a heat insulating plate. However, even in the case of a heat insulating plate made of an extruded foam using the above mixture as a base resin, cracks are effective at the time of production, transportation, and construction by making the shape of the groove specific as in the present invention. Can be prevented.

It is preferable that the apparent density of the residential heat insulating plate 1 according to the present invention made of the polystyrene-based resin extruded foam as described above is 0.020 to 0.050 g / cm ³ . This is because when the apparent density is foamed molded less than 0.020 g / cm ^3, the mechanical strength of the compressive strength and the like of the insulating plate 1 is lowered, whereas, foam molding exceeding 0.050 g / cm ³ When it is a body, it is unpreferable from the point of heat insulation or lightweight. From the above viewpoint, the apparent density of the heat insulating board 1 for a house according to the present invention is more preferably 0.025 to 0.040 g / cm ³ . In addition, the value calculated by the weight of the heat insulation board 1 and its volume is employ | adopted for the said apparent density.

  Moreover, it is preferable that the heat insulation board 1 for houses which consists of a polystyrene-type resin extrusion foam as mentioned above which concerns on this invention has an average bubble diameter of 0.05-0.8 mm, and is 0.06-0.3 mm. More preferably it is. This is because the average bubble diameter is within the above range, and in combination with the configuration of the apparent density range, it has higher heat insulation properties, and more effectively suppresses cracking during construction. be able to. The average cell diameter is the average cell diameter in the thickness direction of the extruded foam. Obtain a magnified micrograph of the vertical cross section in the width direction, draw a straight line in the thickness direction on the photo, and the number of cells intersecting the straight line. And the value obtained by dividing the length of the straight line by the number of counted bubbles is adopted.

  As mentioned above, although the embodiment of the heat insulating material according to the present invention has been described, the present invention is not limited to the embodiment described above, and the technical idea of the present invention described in the claims of the utility model registration is not limited. It goes without saying that various modifications and changes can be made within the scope.

72 parts by weight of polystyrene, 18 parts by weight of styrene-methyl methacrylate copolymer A having a methyl methacrylate component content of 60% by weight, and 10 parts by weight of styrene-methyl methacrylate copolymer B having a methyl methacrylate component content of 20% by weight A base resin, and 0.5 parts by weight of graphite and 3 parts by weight of titanium oxide with respect to 100 parts by weight of the base resin. A polystyrene resin extruded foam having a thickness of 50 mm, an apparent density of 0.035 g / cm ³ and an average cell diameter of 0.20 mm is cut into a long, substantially rectangular parallelepiped shape having a width of 263 mm, a length of 1820 mm, and a thickness of 50 mm. did. At this time, both side surfaces of the extruded foam are inclined surfaces whose lower ends are located inward (inclined 8 degrees with respect to the vertical direction), and the upper surfaces in the vicinity of the side ends are inclined surfaces whose horizontal ends are located downward (horizontal And the meeting part of both inclined surfaces was a right angle.

Furthermore, a cutting tool (round saw) having a rounded tip is used for the polystyrene resin extruded foam, and the cross-sectional shape of the deepest part shown in FIG. 6 (a) is a U-shaped groove. (Example product). This groove has a depth of 33 mm in the thickness direction and a width of 4 mm in parallel with the side edge at a position 15 mm away from the side edge in the horizontal direction, and the U-shaped radius of the deepest part is 1 of the width of the groove. / 2 mm which is twice as long.
In addition, for comparison, with respect to the above-mentioned polystyrene resin extruded foam, a conventional blade with a square blade (round saw) is used, and the deepest portion shown in FIG. Grooves were formed (comparative product). The groove was a rectangular shape having a depth of 33 mm in the thickness direction, a width of 4 mm, and a deepest portion at a right angle at a position 15 mm away from the side end portion in the horizontal direction.

A strength test was carried out on five of each of the above-mentioned example products and comparative example products.
The test method was performed by fixing the test body so that the groove was horizontal, pulling the plate-shaped jig inserted and arranged in the groove upward, and measuring the tensile strength at the time of breaking.
The measurement results are shown in Table 1.

  As shown in the above table, the example product showed an improvement in strength of about 40% compared to the comparative product, and it was confirmed that the deepest part of the groove had a U-shaped improvement effect. It was.

  The above-described heat insulating board for a house according to the present invention has good workability and is less likely to break such as cracks. Therefore, the heat insulating material disposed between the roof, ceiling, floor or wall squares of the house. Can be widely used.

DESCRIPTION OF SYMBOLS 1 Residential heat insulation board 1a Side surface of heat insulation board 1b Upper surface of heat insulation board 1b 'Top surface inclined of heat insulation board 1c Meeting part (side edge part)
1d bottom surface 1e, 1e ', 1e "side end 2 groove 2a deepest part of groove 2b upper end of groove 3 slit 11 bundling stone 12 floor bundle 13 large draw 14 joist 14a side end of joist

Claims (8)

  A heat insulating plate for a house made of extruded polystyrene foam having a substantially rectangular parallelepiped shape and disposed between square members of a roof, a ceiling, a floor, or a wall of a house. The side surface of the heat insulating plate on the side in contact with the upper surface is an inclined surface whose lower end is located inward of the upper end, and is parallel to the side end portion in the vicinity of the side end portion positioned at the upper end of the side surface of the upper surface of the heat insulating plate. A heat insulating plate for a house, characterized in that a groove extending in the shape of the groove is formed, and the cross-sectional shape of the deepest portion of the groove is formed in a U shape.   The heat insulating plate for a house according to claim 1, wherein a radius of the U-shape at the deepest part of the groove is formed to be 1/2 to 1 times the width of the groove.   The portion from the groove forming portion to the side end portion on the upper surface of the heat insulating plate is an inclined surface whose side end portion is located below the groove forming portion, and the inclined side surface and the inclined upper surface The heat insulating plate for a house according to claim 1, wherein the meeting portion is formed at a substantially right angle.   The heat insulation board for houses according to any one of claims 1 to 3, wherein the base resin of the polystyrene resin extruded foam is a mixture of polystyrene and a thermoplastic resin other than polystyrene.   The thermoplastic resin other than the polystyrene is one or more polyester resins selected from spiro glycol-modified polyethylene terephthalate, 1,4-cyclohexanedimethanol-modified polyethylene terephthalate, and neopentyl glycol-modified polyethylene terephthalate, and the polyester resin in the mixture The heat insulation board for houses according to claim 4, wherein the mixing ratio is 5 to 100 parts by weight with respect to 100 parts by weight of polystyrene.   The thermoplastic resin other than polystyrene is a styrene-methyl methacrylate copolymer and / or polymethyl methacrylate, and the methyl methacrylate component in the mixture is 4 to 45% by weight. 4. The heat insulation board for houses according to 4.   The polystyrene-based resin extruded foam is 0.3 parts by weight or more based on 100 parts by weight of the base resin with one or more inorganic particles selected from graphite, carbon black, titanium oxide, aluminum oxide, zinc oxide, and barium sulfate. It contains, The heat insulating board for houses in any one of Claims 1-6 characterized by the above-mentioned. The heat insulation board for houses according to any one of claims 1 to 7, wherein an average cell diameter of the polystyrene resin extruded foam is 0.05 to 0.30 mm.

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