JP3183686U - Thermal insulation board for houses - Google Patents

Thermal insulation board for houses Download PDF

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JP3183686U
JP3183686U JP2013001395U JP2013001395U JP3183686U JP 3183686 U JP3183686 U JP 3183686U JP 2013001395 U JP2013001395 U JP 2013001395U JP 2013001395 U JP2013001395 U JP 2013001395U JP 3183686 U JP3183686 U JP 3183686U
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heat insulating
insulating plate
polystyrene
groove
house
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典利 西山
義彦 神田
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JSP Corp
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Abstract

【課題】屋根、天井、床または壁の角材間に圧挿して施行する際、その施工性が良好であると共に、破損が生じ難いポリスチレン系樹脂押出発泡体からなる住宅用断熱板を提案すること。
【解決手段】
住宅の屋根、天井、床または壁の角材間に配設される長尺の略直方体形状のポリスチレン系樹脂押出発泡体からなる住宅用断熱板であって、該断熱板1の側面1aが、下端が上端よりも内方に位置する傾斜面であると共に、該断熱板1の上面の側端部1c付近に、側端部に並行して延びる溝2が形成され、該溝2の最深部2aの断面形状がU型に形成されている住宅用断熱板とした。
【選択図】図2
[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

本考案は、住宅の屋根、天井、床または壁の角材間に配設される住宅用断熱板、特にポリスチレン系樹脂押出発泡体(以下、単に「押出発泡体」と言う場合もある。)からなる住宅用断熱板(以下、単に「断熱板」と言う場合もある。)に関するものである。   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).

従来、断熱性を向上させる目的で、住宅の屋根、天井、床または壁の角材間に、断熱材を配設することがなされている。このような断熱材として、ポリスチレン系樹脂押出発泡体は、優れた断熱性および機械的強度を有することから、長尺の板状に成形されたものが、住宅用断熱板として広く使用されている。この場合において、配設した断熱板は、その両側面が角材の側面に密着していることが、断熱性を向上させる上において重要となる。
ここで、例えば床の場合、断熱板を配設する根太と根太との間の寸法は、多少の狂いが生じることがあるため、所定寸法に形成された断熱板を取付ける際、隙間無く配設することができず、施工現場での詰め物調整、カット調整等を余儀なくされる場合があり、施行性を低下させていた。このことは、屋根、天井または壁に断熱板を配設する場合にも、同様に生じる課題であった。
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.

そこで、断熱板の板面に長手方向に延びる溝を形成し、該溝によって角材間の寸法誤差を吸収させ、断熱板を隙間なく角材間に配設する技術が提案されている(例えば、特許文献1)。   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).

実開昭64−24207号公報Japanese Utility Model Publication No. 64-24207

しかしながら、特許文献1等に記載された従来の断熱板にあっては、図7(a)に示したように、該断熱板の角材間への挿入の容易性等を考慮して側面が傾斜面であるために、施行時において横からの力が過度に加わると、図7(b)に示したように該溝の最深部の角部に応力が集中しやすく、角部を起点として割れが発生すると言う課題があった。   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.

本考案は、上述した背景技術が有する課題に鑑みなされたものであって、その目的は、屋根、天井、床または壁の角材間に圧挿して施行する際、その施工性が良好であると共に、割れ等の破損が生じ難い、ポリスチレン系樹脂押出発泡体からなる住宅用断熱板を提案することにある。   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.

上記した課題を解決するため、本考案は、次の〔1〕〜〔8〕に記載の住宅用断熱板とした。
〔1〕住宅の屋根、天井、床または壁の角材間に配設される長尺の略直方体形状のポリスチレン系樹脂押出発泡体からなる住宅用断熱板であって、角材間に配設される際に角材と接する側の該断熱板の側面が、下端が上端よりも内方に位置する傾斜面であり、該断熱板の上面の前記側面上端に位置する側端部付近に、該側端部に並行して延びる溝が形成され、該溝の最深部の断面形状がU型に形成されていることを特徴とする、住宅用断熱板。
〔2〕上記溝の最深部のU型形状の半径が、溝の幅の1/2〜1倍の長さに形成されていることを特徴とする、上記〔1〕に記載の住宅用断熱板。
〔3〕上記断熱板の上面の溝の形成部から側端部までの部分が、側端部が溝の形成部よりも下方に位置する傾斜面であり、上記傾斜された側面と該傾斜された上面との会合部が、略直角に形成されていることを特徴とする、上記〔1〕または〔2〕に記載の住宅用断熱板。
〔4〕上記ポリスチレン系樹脂押出発泡体の基材樹脂が、ポリスチレンと、ポリスチレン以外の熱可塑性樹脂との混合物であることを特徴とする、上記〔1〕〜〔3〕のいずれかに記載の住宅用断熱板。
〔5〕上記ポリスチレン以外の熱可塑性樹脂が、スピログリコール変性ポリエチレンテレフタレート、1,4−シクロヘキサンジメタノール変性ポリエチレンテレフタレート及びネオペンチルグリコール変性ポリエチレンテレフタレートから選択される1以上のポリエステル樹脂であり、混合物中のポリエステル樹脂の混合割合がポリスチレン100重量部に対して5〜100重量部であることを特徴とする、上記〔4〕に記載の住宅用断熱板。
〔6〕上記ポリスチレン以外の熱可塑性樹脂が、スチレン−メタクリル酸メチル共重合体及び/又はポリメタクリル酸メチルであり、混合物中のメタクリル酸メチル成分が4〜45重量%であることを特徴とする、上記〔4〕に記載の住宅用断熱板。
〔7〕上記ポリスチレン系樹脂押出発泡体が、グラファイト、カーボンブラック、酸化チタン、酸化アルミニウム、酸化亜鉛及び硫酸バリウムから選択される1以上の無機粒子を基材樹脂100重量部に対して0.3重量部以上含有していることを特徴とする、上記〔1〕〜〔6〕のいずれかに記載の住宅用断熱板。
〔8〕上記ポリスチレン系樹脂押出発泡体の平均気泡径が、0.05〜0.30mmであることを特徴とする、上記〔1〕〜〔7〕のいずれかに記載の住宅用断熱板。
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.

上記した本考案に係る住宅用断熱板によれば、角材間の寸法誤差を吸収させるために形成した溝の最深部の断面形状がU型に形成されているため、断熱板の側面が下方ほど内方に傾斜されていても、施行時において横からの力が過度に加わった場合において応力集中が起き難く、割れ等の破損が生じ難いものとなるので、角材間への挿入作業が容易となり、施工性が良好なものとなる。   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.

本考案に係る住宅用断熱板の一実施形態を示した斜視図である。It is the perspective view which showed one Embodiment of the heat insulation board for houses which concerns on this invention. 図1に示した住宅用断熱板の正面図である。It is a front view of the heat insulating board for houses shown in FIG. 図1に示した住宅用断熱板の部分拡大正面図である。It is the elements on larger scale of the heat insulating board for houses shown in FIG. 図1に示した住宅用断熱板を大引きの上の根太間に挿入する状態を示した概念的斜視図である。It is the conceptual perspective view which showed the state which inserts the heat insulating board for houses shown in FIG. 図1に示した住宅用断熱板を大引きの上の根太間に挿入した後の状態を示した部分拡大正面図である。It is the elements on larger scale which showed the state after inserting the heat insulating board for houses shown in FIG. 試験体に形成した溝部分の拡大図であって、(a)は最深部がU型の実施例品の溝、(b)は最深部が角型の比較例品の溝を示した図である。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. 従来の住宅用断熱板の溝部分の拡大図であって、(a)は横からの力が加わる前の状態を示し、(b)は横からの力が加わり、割れが発生した状態をそれぞれ示した図である。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.

以下、上記した本考案に係る住宅用断熱板の実施形態を、図面に基づいて詳細に説明する。   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.

本考案に係る住宅用断熱板は、ポリスチレン系樹脂押出発泡体からなり、該ポリスチレン系樹脂押出発泡体からなる住宅用断熱板1は、図示した実施形態においては、下面の幅263mm、長さ1820mm、厚さ50mmの長尺の略直方体形状に形成されている。   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.

上記住宅用断熱板1には、図1および図2に示したように、上面1bの長手方向の両側面1a,1aの上端に位置する側端部1c,1c付近に、該側端部1cに並行して長手方向に延びる溝2,2がそれぞれ形成され、該溝2の最深部2aの断面形状は、U型に形成されている。   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.

具体的には、上記溝2は、側端部1cから水平方向にそれぞれ15mm離れた位置に、側端部1cに並行して断熱板の長手方向全長にわたって、断熱板の厚み方向に深さ33mm、幅4mmで形成され、最深部2aのU型形状の半径は、溝2の幅の1/2倍の長さである2mmで形成されている。なお、溝2の最深部2aのU型形状の半径は、溝2の幅の1/2〜1倍の長さに形成されていれば、応力集中の起き難いものとなるので、その範囲内で形成されていればよい。特には、溝2の幅の1/2〜2/3倍の長さの半径で、最深部2aのU型形状が形成されていることが好ましい。   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.

また、住宅用断熱板1の両側面1a,1aは、それぞれ下端が上端よりも内方に位置する傾斜面として形成されている。また、上記溝2,2のそれぞれの上端2b,2bから側端部1c,1cまでのそれぞれの上面1b’,1b’は、上端2bよりも側端部1cが下方に位置する傾斜面としてそれぞれ形成されており、上記傾斜された側面1a,1aと傾斜された上面1b’,1b’とのそれぞれの会合部(側端部)1c,1cは、略直角に形成されていることが好ましい。   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.

具体的には、図示した実施形態においては、側面1aは、鉛直方向(断熱板の厚み方向)に対して図3に示した角度αが8度でその下端が内方に位置する傾斜面であり、側端部1c付近の上面1b’は、水平方向に対して図3に示した角度βが8度で側端部1cが下方に位置する傾斜面であり、両傾斜面1a,1b’の会合部(側端部)1cは、直角に形成されている。   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.

更に、図示した実施形態の住宅用断熱板1においては、その下面1dに側端部1eと並行して長手方向に延びる2本のスリット3,3が形成されている。このスリット3は、該断熱板1を挿入する角材間、例えば根太間の間隔に合わせて断熱板1をカットするために用いるもので、一方のスリット3は、下面1dの一方の側端部1e’から72mmの位置、他方のスリット3は、下面1dの他方の側端部1e”から80mmの位置に、断熱板の側端部1eと並行して長手方向全長にわたって、断熱板の厚み方向に深さ17mm、幅1mmでそれぞれ形成されている。   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.

上記のように構成された本考案に係る住宅用断熱板1は、次のようにして使用される。   The residential heat insulating plate 1 according to the present invention configured as described above is used as follows.

図4は、本考案に係る住宅用断熱板1を、大引きの上の根太間に挿入する状態を示した概念的斜視図であって、図中、11は束石、12は束石の上に置かれた床束、13は床束間に差し渡された大引き、14は大引き上に設置された根太である。そして根太14,14の間に、本考案に係る住宅用断熱板1が挿入配置され、その上方に図示しない床材が張られ、床が完成する。   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.

根太14,14の間の間隔は、260mmとされ、その間に上記した幅263mmの住宅用断熱板1が挿入配置される。その挿入に際しては、図4に示したように、根太14,14間に、断熱板1を上方から押し込み、根太14の側端14aに断熱板1の側面1aを合わせる。断熱板1の押し込みは、その側面1aが下端が内方に位置する傾斜面であるため、容易に行うことができる。   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.

また、断熱板1の幅は、根太14,14の間の間隔より僅かに大きく設計されているため、押し込みによって側方から圧縮力が作用し、図5に示したように、溝2が押し潰されて溝の上端付近の隙間がなくなると共に、傾斜した側面1aが鉛直方向に起ち、傾斜した上面1b’が水平方向に寝ることとなるため、断熱板1と根太14との間および上方に張られた図示しない床材との間に隙間が生じないものとなり、良好な断熱性能が得られる。   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.

この際、断熱板1を配設する根太14,14の間の間隔に、多少の誤差がある場合においても、上記溝2が形成された断熱板1は、その寸法誤差を該溝2の部分で吸収することができ、無理なく挿入配置することができる。また、本考案に係る断熱板1は、上記寸法誤差を吸収させるために形成した溝2の最深部2aが、U型に形成されているため、施行時において横からの力が過度に加わった場合においても、又は断熱板を構成する押出発泡体の機械的強度が多少弱い場合であっても、応力集中が起き難く、割れ等の破損が生じ難いものとなる。さらに、本考案に係る断熱板1によれば、側面1aがその下端が内方に位置する傾斜面であるため、上記したように角材間への挿入作業が容易となる。   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.

上記した本考案に係る住宅用断熱板1は、ポリスチレン系樹脂押出発泡体からなるものである。
上記押出発泡体を構成する基材樹脂は、ポリスチレン系樹脂を主成分とする。ポリスチレン系樹脂としては、ポリスチレンやスチレンを主成分とするスチレン−アクリル酸共重合体、スチレン−メタクリル酸共重合体、スチレン−無水マレイン酸共重合体、スチレン−メタクリル酸メチル共重合体、スチレン−アクリロニトリル共重合体、スチレン−メチルスチレン共重合体等が挙げられる。上記スチレン系共重合体におけるスチレン単位成分含有量は50モル%以上が好ましく、より好ましくは80モル%以上である。なお、ポリスチレン系樹脂を主成分とするとは、該基材樹脂がポリスチレン系樹脂を50重量%以上含むことを意味する。
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.

断熱板の断熱性や耐熱性を向上させるという観点などから、ポリスチレンと、ポリスチレン以外の熱可塑性樹脂との混合物をポリスチレン系樹脂押出発泡体の基材樹脂とすることができる。このような押出発泡体は、ポリスチレンのみを基材樹脂とする一般的な押出発泡体よりも機械的強度が低下しやすく、断熱板として用いた場合に溝部から割れが生じやすくなる。しかしながら、上記混合物を基材樹脂とする押出発泡体からなる断熱板であっても、本考案のごとく溝の形状を特定のものとすることにより、製造時や輸送時、施工時に割れを効果的に防止することができる。   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.

特に、断熱板の高い断熱性を長期に亘り維持するためには、ポリスチレンと、スピログリコール変性ポリエチレンテレフタレート(以下、ポリエチレンテレフタレートを「PET」とも言う。)、1,4−シクロヘキサンジメタノール変性PETやネオペンチルグリコール変性PETなどの非晶性又は低結晶性の変性PETとの混合物をポリスチレン系樹脂押出発泡体の基材樹脂とすることが好ましい。この場合の上記変性PETの混合割合は、ポリスチレン100重量部に対し、5〜100重量部であることが好ましく、より好ましくは5〜50重量部、さらに好ましくは5〜30重量部である。なお、上記変性とは、PET中のグリコール成分として、上記スピログリコールなどの他のグリコール成分をエチレングリコール成分と共に共重合させることを意味する。   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.

上記非晶性または低結晶性のポリエステル樹脂は、JIS K7122(1987)に記載の「一定の熱処理を行った後、融解熱を測定する場合」(試験片の状態調節における加熱速度と冷却速度は、いずれも10℃/分とする。)を採用し、熱流束示差走査熱量測定装置を使用し、加熱速度10℃/分で得られるDSC曲線に基づくポリエステル系樹脂の融解に伴う吸熱ピーク熱量が、5J/g未満(0を含む。)の条件を満足するものである。   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.

また、断熱板の高い断熱性を長期に亘り維持するためには、ポリスチレンと、スチレン−メタクリル酸メチル共重合体やポリメタクリル酸メチルなどのアクリル樹脂との混合物をポリスチレン系樹脂押出発泡体の基材樹脂とすることもできる。この場合、混合樹脂中にメタクリル酸メチル成分が4〜45重量%となるようにアクリル樹脂を配合することが好ましく、10〜30重量%となるようにアクリル樹脂を配合することがより好ましい。   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%.

また、断熱板の高い断熱性を長期に亘り維持するという観点から、ポリスチレン系樹脂押出発泡体に、グラファイト、カーボンブラック、酸化チタン、酸化亜鉛、酸化アルミニウムや硫酸バリウムなどの無機粒子を配合することができる。無機粒子の含有量は、ポリスチレン系樹脂押出発泡板を構成する基材樹脂100重量部に対して0.3重量部以上とすることが好ましく、より好ましくは0.5〜12重量部である。これらの無機粒子の中でも、特に断熱性を向上させる効果が高いことから、グラファイトと酸化チタンとを併用することが好ましく、基材樹脂100重量部に対してグラファイトの含有量を0.3〜5重量部とし、酸化チタンの含有量を2重量部以上とすると共に、グラファイトの含有量に対する酸化チタンの含有量の比を2以上とすることが好ましい。このような押出発泡体は、上記無機粒子を含まない一般的な押出発泡体よりも機械的強度が低下しやすく、断熱板として用いた場合に溝部から割れが生じやすくなる。しかしながら、上記混合物を基材樹脂とする押出発泡体からなる断熱板であっても、本考案のごとく溝の形状を特定のものとすることにより、製造時や輸送時、施工時に割れを効果的に防止することができる。   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.

上記したようなポリスチレン系樹脂押出発泡体からなる本考案に係る住宅用断熱板1の見掛け密度は、0.020〜0.050g/cm3であることが好ましい。これは、見掛け密度が0.020g/cm3に満たない発泡成形体である場合には、断熱板1の圧縮強度等の機械的強度が低く、一方、0.050g/cm3を越える発泡成形体である場合には、断熱性や軽量性の点から好ましくない。上記の観点から、本考案に係る住宅用断熱板1の見掛け密度は、0.025〜0.040g/cm3であることがより好ましい。なお、上記見掛け密度は、断熱板1の重量とその体積により算出する値を採用する。 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.

また、上記したようなポリスチレン系樹脂押出発泡体からなる本考案に係る住宅用断熱板1は、平均気泡径が0.05〜0.8mmであることが好ましく、0.06〜0.3mmであることがさらに好ましい。これは、平均気泡径が上記範囲内にあることにより、上記見掛け密度範囲の構成と相俟って、より一層高い断熱性を有するものとなり、また、施工時の割れをより効果的に抑制することができる。なお、平均気泡径は、押出発泡体の厚み方向の平均気泡径であり、幅方向垂直断面の顕微鏡拡大写真を得、該写真上において厚み方向に直線を引き、その直線と交差する気泡の数を計測し、直線の長さを計数された気泡の数で割ることによって求めた値を採用する。   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.

以上、本考案に係る断熱材の実施形態を説明したが、本考案は、何ら既述の実施形態に限定されるものではなく、実用新案登録請求の範囲に記載した本考案の技術的思想の範囲内において、種々の変形および変更が可能であることは当然である。   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.

ポリスチレン72重量部と、メタクリル酸メチル成分含有量60重量%のスチレン−メタクリル酸メチル共重合体A18重量部、メタクリル酸メチル成分含有量20重量%のスチレン−メタクリル酸メチル共重合体B10重量部との混合物(混合物中のメタクリル酸メチル成分の含有量が13重量%)を基材樹脂とし、該基材樹脂100重量部に対して0.5重量部のグラファイトと3重量部の酸化チタンとを含む厚み50mm、見掛け密度0.035g/cm3、平均気泡径0.20mmのポリスチレン系樹脂押出発泡体を、下面の幅263mm、長さ1820mm、厚さ50mmの長尺の略直方体形状に切削加工した。このとき押出発泡体の両側面は、下端が内方に位置する傾斜面(鉛直方向に対して8度傾斜)、側端部付近の上面は、側端部が下方に位置する傾斜面(水平方向に対して8度傾斜)とし、両傾斜面の会合部は直角とした。 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.

さらに、上記ポリスチレン系樹脂押出発泡体に対し、先端の刃が丸型に形成された刃物(丸のこ)を使用し、図6(a)に示した最深部の断面形状がU型の溝を形成した(実施例品)。この溝は、側端部から水平方向に15mm離れた位置に、側端部に並行して厚み方向に深さ33mm、幅4mmで、最深部のU型形状の半径は、溝の幅の1/2倍の長さである2mmのものであった。
また、比較のため、上記ポリスチレン系樹脂押出発泡体に対し、先端の刃が従来通りの角型の刃物(丸のこ)を使用し、図6(b)に示した最深部が角型の溝を形成した(比較例品)。この溝は、側端部から水平方向に15mm離れた位置に、側端部に並行して厚み方向に深さ33mm、幅4mmで、最深部が直角の角型のものであった。
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.

上記実施例品及び比較例品それぞれ5個に対し、強度試験を実施した。
試験方法は、試験体を溝が水平になるように固定し、溝内に挿入配置した板状冶具を上方に引っ張り、その際の、破断時の引張強度を測定することにより行った。
その測定結果を、表1に示す。
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.

Figure 0003183686
Figure 0003183686

上記の表に示すように、実施例品は、比較例品に対して約40%の強度向上がみられ、溝の最深部をU型とすることにより、割れ改善効果があることが確認された。   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.

上記した本考案に係る住宅用断熱板は、施工性が良好であると共に、割れ等の破損が生じ難いものとなるため、住宅の屋根、天井、床または壁の角材間に配設する断熱材として、広く利用することができる。   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.

1 住宅用断熱板
1a 断熱板の側面
1b 断熱板の上面
1b’ 断熱板の傾斜された上面
1c 会合部(側端部)
1d 下面
1e,1e’,1e” 側端部
2 溝
2a 溝の最深部
2b 溝の上端
3 スリット
11 束石
12 床束
13 大引き
14 根太
14a 根太の側端
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)

住宅の屋根、天井、床または壁の角材間に配設される長尺の略直方体形状のポリスチレン系樹脂押出発泡体からなる住宅用断熱板であって、角材間に配設される際に角材と接する側の該断熱板の側面が、下端が上端よりも内方に位置する傾斜面であり、該断熱板の上面の前記側面上端に位置する側端部付近に、該側端部に並行して延びる溝が形成され、該溝の最深部の断面形状がU型に形成されていることを特徴とする、住宅用断熱板。   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. 上記溝の最深部のU型形状の半径が、溝の幅の1/2〜1倍の長さに形成されていることを特徴とする、請求項1に記載の住宅用断熱板。   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. 上記断熱板の上面の溝の形成部から側端部までの部分が、側端部が溝の形成部よりも下方に位置する傾斜面であり、上記傾斜された側面と該傾斜された上面との会合部が、略直角に形成されていることを特徴とする、請求項1または2に記載の住宅用断熱板。   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. 上記ポリスチレン系樹脂押出発泡体の基材樹脂が、ポリスチレンと、ポリスチレン以外の熱可塑性樹脂との混合物であることを特徴とする、請求項1〜3のいずれかに記載の住宅用断熱板。   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. 上記ポリスチレン以外の熱可塑性樹脂が、スピログリコール変性ポリエチレンテレフタレート、1,4−シクロヘキサンジメタノール変性ポリエチレンテレフタレート及びネオペンチルグリコール変性ポリエチレンテレフタレートから選択される1以上のポリエステル樹脂であり、混合物中のポリエステル樹脂の混合割合がポリスチレン100重量部に対して5〜100重量部であることを特徴とする、請求項4に記載の住宅用断熱板。   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. 上記ポリスチレン以外の熱可塑性樹脂が、スチレン−メタクリル酸メチル共重合体及び/又はポリメタクリル酸メチルであり、混合物中のメタクリル酸メチル成分が4〜45重量%であることを特徴とする、請求項4に記載の住宅用断熱板。   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. 上記ポリスチレン系樹脂押出発泡体が、グラファイト、カーボンブラック、酸化チタン、酸化アルミニウム、酸化亜鉛及び硫酸バリウムから選択される1以上の無機粒子を基材樹脂100重量部に対して0.3重量部以上含有していることを特徴とする、請求項1〜6のいずれかに記載の住宅用断熱板。   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. 上記ポリスチレン系樹脂押出発泡体の平均気泡径が、0.05〜0.30mmであることを特徴とする、請求項1〜7のいずれかに記載の住宅用断熱板。
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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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015021377A (en) * 2013-07-24 2015-02-02 ダウ化工株式会社 Building insulation material and insulation construction method using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015021377A (en) * 2013-07-24 2015-02-02 ダウ化工株式会社 Building insulation material and insulation construction method using the same

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