JP5404749B2 - Manufacturing method of fireproof double-layer pipe - Google Patents
Manufacturing method of fireproof double-layer pipe Download PDFInfo
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本発明は、合成樹脂製の内管と、その外周に設置されたモルタル製外管から構成される耐火二層管の製造方法に関するものである。 The present invention relates to a method for producing a refractory double-layer pipe comprising a synthetic resin inner pipe and a mortar outer pipe installed on the outer periphery thereof.
従来から、ビルや集合住宅には、合成樹脂製の内管の外周にモルタル製外管をスライド可能な状態で設置した耐火二層管が排水のために使用されている。この耐火二層管は、外管がモルタル製で、耐火・断熱性を有しているために、火災発生時に、合成樹脂製の内管を伝わって火災が延焼することを防止することができる。しかしながら、合成樹脂製の内管内を排水が流れると、排水音が耐火二層管から漏れるという問題点があり、排水音の問題を解決し、更に、より一層の耐火・断熱性を付与するために、合成樹脂製の内管と、モルタル製の外管の間に、断熱層、防音層、吸音層等を設けた構成の耐火二層管が種々提案されている。 Conventionally, in buildings and apartment houses, a fireproof double-layer pipe in which a mortar outer pipe is slidable on the outer periphery of a synthetic resin inner pipe is used for drainage. This fire-resistant double-layer pipe is made of mortar and has fire resistance and heat insulation properties, so it is possible to prevent the fire from spreading through the inner pipe made of synthetic resin in the event of a fire. . However, when drainage flows through the inner pipe made of synthetic resin, there is a problem that the drainage sound leaks from the fireproof two-layer pipe, in order to solve the problem of drainage sound and to provide further fire resistance and heat insulation. In addition, various fireproof two-layer pipes having a structure in which a heat insulating layer, a soundproof layer, a sound absorbing layer, and the like are provided between an inner pipe made of synthetic resin and an outer pipe made of mortar have been proposed.
例えば、特許文献１には、排水が内部を流れる、樹脂材料で形成された内管と、該内管を被覆する耐火管からなるモルタル、セメントの無機質材料で形成された外管と、を有し、前記内管の外側には、フェルトで形成された吸音層が、及び該吸音層の外側には、ゴム系材料にアスファルト系材料を加えて形成された遮音層が設けられ、内管と外管との間に、前記吸音層と遮音層との２層からなる防音層が設けられたことを特徴とする排水時の管振動防止機能を有する建築設備の排水用防音管材が開示されている。 For example, Patent Document 1 has an inner pipe made of a resin material through which drainage flows, and a mortar made of a refractory pipe covering the inner pipe, and an outer pipe made of a cement inorganic material. A sound absorbing layer formed of felt is provided outside the inner tube, and a sound insulating layer formed by adding an asphalt material to a rubber-based material is provided outside the sound absorbing layer. Disclosed is a soundproofing pipe for drainage of building equipment having a function of preventing pipe vibration during drainage, wherein a soundproofing layer comprising two layers of the sound absorbing layer and the sound insulating layer is provided between the outer pipe and the outer pipe. Yes.
また、特許文献２には、耐火二層管を構成する合成樹脂製の内管の外周に装着される繊維混入モルタル製の外管を、未硬化の繊維混入モルタルからなるモルタルシートと遮音性を有する樹脂シートを重ねた重層シートを中空円筒状に巻き、該樹脂シートの外面と内面がモルタルシートで覆われた中空円筒状の外管で構成したことを特徴とする耐火二層管用遮音形外管（請求項１）；上記樹脂シートの外面及び内面に、上記モルタルシートとの接合を可能にする接合加工を施したことを特徴とする請求項１に記載の耐火二層管用遮音形外管（請求項２）；上記樹脂シートの巻き込み方向の長さは、上記外管を少なくとも一周する長さを有し、上記モルタルシートの巻き込み方向の長さは、該樹脂シートの巻き込み方向の長さよりも長く、その巻き込み方向の前後に樹脂シートの前後端部をモルタルに埋没させるための封入代を備えたことを特徴とする請求項１に記載の耐火二層管用遮音形外管（請求項３）；未硬化の繊維混入モルタルからなるモルタルシート上に遮音性を有する樹脂シートを重ねて重層シートを形成し、この重層シートを、該樹脂シートの外面と内面が該モルタルシートにより覆われるような円筒軸に巻き付け、円筒状の重層シートを乾燥硬化させ、該円筒軸を抜き出して上記外管を製造することを特徴とする耐火二層管用遮音形外管の製造方法（請求項４）；上記重層シートの巻き付け開始側のモルタルシートに、上記円筒軸を少なくとも一周する長さの巻き付け代を設け、上記樹脂シート側の面を内側にして該開始側端部から該円筒軸に巻き付けすることを特徴とする請求項４に記載の耐火二層管用遮音形外管の製造方法（請求項５）が開示されている。 Patent Document 2 discloses that a fiber-mixed mortar outer tube mounted on the outer periphery of a synthetic resin-made inner tube constituting a fireproof double-layered tube has a sound insulation and a mortar sheet made of uncured fiber-mixed mortar. A soundproof double-layered pipe for a fire-resistant double-layer pipe, characterized in that it is composed of a hollow cylindrical outer tube in which a multilayer sheet with a plurality of resin sheets stacked is wound into a hollow cylindrical shape and the outer surface and inner surface of the resin sheet are covered with a mortar sheet Pipe (Claim 1); The outer surface and the inner surface of the resin sheet are subjected to a joining process that enables joining with the mortar sheet. (Claim 2); The length in the winding direction of the resin sheet has a length that makes at least one round of the outer tube, and the length in the winding direction of the mortar sheet is longer than the length in the winding direction of the resin sheet. Too long The sound insulation type outer pipe for fireproof double-layer pipes according to claim 1, further comprising a sealing allowance for burying the front and rear ends of the resin sheet in the mortar before and after the filling direction (Claim 3); A layered sheet is formed by stacking a sound-insulating resin sheet on a mortar sheet made of fiber-mixed mortar, and this layered sheet is wound around a cylindrical shaft so that the outer surface and inner surface of the resin sheet are covered by the mortar sheet A method for producing a sound-insulated outer tube for a fire-resistant double-layer tube, wherein the cylindrical tube is dried and cured, and the cylindrical shaft is extracted to produce the outer tube (Claim 4); The start side mortar sheet is provided with a winding allowance of a length that makes at least one round of the cylindrical shaft, and is wound around the cylindrical shaft from the start side end portion with the surface on the resin sheet side inward. Method for producing a refractory bilayer pipe sound insulation form outside tube according to claim 4 (claim 5) is disclosed.
ここで、耐火二層管どうしを接続・施工する際には、合成樹脂製の内管を接続するための接続部材を設置するため、内管の長さよりも断熱・吸音層及び外管の長さを短くする必要がある。しかしながら、特許文献１に開示されているような排水用防音管材では、外管と防音層とが一体化されているわけではないから、施工において切断加工する際、外管と内管とをスライドさせると、防音層も移動してしまうので、施工しにくいという問題がある。
また、特許文献２に開示されているような耐火二層管用遮音形外管は、内管と外管がスライド可能な状態で構成されているため、施工性は良好であるが、外管は、樹脂シートとその両面に積層されたモルタルシートとからなる少なくとも三層から構成されており、モルタル製外管として所定の強度を得るためには、各モルタル層の厚さを厚くする必要があり、単層のモルタルシートから構成される外管に比して質量が重くなるという問題点がある。
Here, when connecting and constructing the fireproof two-layer pipes, the length of the heat insulation / sound absorbing layer and the outer pipe is longer than the length of the inner pipe because a connecting member for connecting the inner pipe made of synthetic resin is installed. It is necessary to shorten the length. However, in the soundproofing pipe material for drainage as disclosed in Patent Document 1, since the outer pipe and the soundproofing layer are not integrated, when cutting in construction, the outer pipe and the inner pipe are slid. If it does, since a soundproof layer will also move, there exists a problem that it is difficult to construct.
Moreover, since the sound insulation type outer pipe for fireproof double-layer pipes disclosed in Patent Document 2 is configured in such a manner that the inner pipe and the outer pipe are slidable, the workability is good. It is composed of at least three layers consisting of a resin sheet and a mortar sheet laminated on both sides thereof. In order to obtain a predetermined strength as a mortar outer tube, it is necessary to increase the thickness of each mortar layer. There is a problem that the mass becomes heavier than that of an outer tube made of a single layer mortar sheet.
従って、本発明の目的は、充分な耐火・断熱性並びに吸音性を有し、且つ良好な施工性を有する耐火二層管の製造方法を提供することにある。 Accordingly, an object of the present invention is to provide a method for producing a fire-resistant double-layer pipe having sufficient fire resistance / heat insulation properties and sound absorption properties and good workability.
即ち、本発明の耐火二層管の製造方法は、合成樹脂製の内管と、該内管の外周に、長さ方向にスライド可能な状態で設置されたモルタル製外管より構成された耐火二層管の製造方法において、内管の外周に、外表面に金属フィルムが張り付けられている断熱・吸音管を通し、次に、金属フィルムの外周面に接着剤を塗布した後、内管及び断熱・吸音管を予め作製されたモルタル製外管に挿入することにより、モルタル製外管の内周に、断熱・吸音管を固定することを特徴とする。 That is, the method for producing a fire-resistant double-layer pipe according to the present invention comprises a fire-resistant construction comprising an inner pipe made of synthetic resin and a mortar outer pipe installed on the outer periphery of the inner pipe so as to be slidable in the length direction. In the method of manufacturing a two-layer tube, a heat insulating / sound absorption tube having a metal film attached to the outer surface is passed through the outer periphery of the inner tube, and then an adhesive is applied to the outer peripheral surface of the metal film. The heat insulation / sound absorption tube is fixed to the inner periphery of the mortar outer tube by inserting the heat insulation / sound absorption tube into a mortar outer tube prepared in advance.
また、本発明の耐火二層管の製造方法は、接着剤が変成シリーン樹脂系、エポキシ樹脂系、ウレタン樹脂系または酢酸ビニル系であることを特徴とする。 Moreover, the manufacturing method of the fireproof two-layer pipe of the present invention is characterized in that the adhesive is a modified silicone resin type, an epoxy resin type, a urethane resin type or a vinyl acetate type.
更に、本発明の耐火二層管の製造方法は、断熱・吸音管が無機繊維またはポリエステル繊維から構成されることを特徴とする。 Furthermore, the method for manufacturing a fireproof double-layered pipe according to the present invention is characterized in that the heat insulating and sound absorbing pipe is made of inorganic fiber or polyester fiber.
また、本発明の耐火二層管の製造方法は、金属フィルムは、アルミニウム箔であることを特徴とする。 Moreover, the manufacturing method of the fireproof two-layer pipe | tube of this invention is characterized by a metal film being aluminum foil.
本発明の製造方法によれば、耐火・吸音層とモルタル製の外管が一体となっており、耐火・吸音層と外管が、合成樹脂製の内管とがスライド可能な構成を有する耐火二層管を得ることができ、得られた耐火二層管は、充分な耐火・断熱性並びに吸音性を有し、且つ良好な施工性を有するという効果を奏するものである。 According to the manufacturing method of the present invention, the fireproof / sound absorbing layer and the outer tube made of mortar are integrated, and the fireproof / sound absorbing layer and the outer tube are configured to be slidable with the inner tube made of synthetic resin. A two-layer pipe can be obtained, and the obtained fire-resistant two-layer pipe has sufficient fire resistance / heat insulation properties and sound absorption properties, and has an effect of having good workability.
本発明の耐火二層管の製造方法は、合成樹脂製の内管と、該内管の外周に、長さ方向にスライド可能な状態で設置されたモルタル製外管より構成される耐火二層管の製造方法において、合成樹脂製の内管の外周に、外表面に金属フィルムが張付けられている断熱・吸音管を通し、次に、金属フィルムの外周面に接着剤を塗布した後、前記内管及び断熱・吸音管を予め作製されたモルタル製外管に挿入することにより、モルタル製外管の内周に、断熱・吸音管を固定することを構成上の特徴とするものである。 The method for producing a fire-resistant double-layer pipe according to the present invention comprises a synthetic resin-made inner pipe, and a refractory double-layer composed of a mortar outer pipe installed on the outer periphery of the inner pipe so as to be slidable in the length direction. In the tube manufacturing method, the outer periphery of the inner tube made of synthetic resin is passed through a heat insulating and sound absorbing tube having a metal film attached to the outer surface, and then the adhesive is applied to the outer peripheral surface of the metal film. The heat insulation / sound absorption tube is fixed to the inner periphery of the mortar outer tube by inserting the inner tube and the heat insulation / sound absorption tube into a mortar outer tube prepared in advance.
本発明において、モルタル製外管の製造方法は、特に限定されるものではなく、例えば従来公知の方法を用いて製造することができる。なお、モルタル製外管の厚さは、外管に必要とされる強度と耐火性等を勘案して適宜選択することができる。モルタル製外管の厚さは、５〜１５ｍｍ、通常６〜７．５ｍｍの範囲内である。 In the present invention, the method for producing the outer tube made of mortar is not particularly limited, and for example, it can be produced using a conventionally known method. The thickness of the mortar outer tube can be appropriately selected in consideration of the strength and fire resistance required for the outer tube. The thickness of the mortar outer tube is in the range of 5 to 15 mm, usually 6 to 7.5 mm.
また、本発明において、内管を構成する合成樹脂管は、特に限定されるものではなく、通常建築設備の排水管として使用されている材質であればよく、例えば塩化ビニル管、耐熱性硬質塩化ビニル管、リサイクル発泡三層硬質塩化ビニル管等を用いることができる。 In the present invention, the synthetic resin pipe constituting the inner pipe is not particularly limited as long as it is a material normally used as a drain pipe for building equipment, such as a vinyl chloride pipe, a heat-resistant hard chloride. A vinyl pipe, a recycled foamed three-layer hard vinyl chloride pipe, or the like can be used.
更に、本発明において、断熱・吸音管を構成する断熱・吸音材料は、断熱性、吸音性及び弾力性を有する材質であれば特に限定されるものではないが、無機繊維例えばロックウール、グラスウール等のフェルトまたはマット、またはポリエステル繊維のマットから構成されるものが好ましい。ここで、断熱・吸音管としてグラスウールを使用する場合、そのかさ密度は、１０〜９６ｋｇ／ｍ３、好ましくは２４〜３２ｋｇ／ｍ３の範囲内である。また、ロックウールを使用する場合、そのかさ密度は、２５〜３００ｋｇ／ｍ３、好ましくは４０〜２００ｋｇ／ｍ３の範囲内である。更に、ポリエステル繊維のマットを使用する場合、そのかさ密度は、１０〜９６ｋｇ／ｍ３、好ましくは２４〜３２ｋｇ／ｍ３の範囲内である。ここで、かさ密度が上記上限を超えると、材料が硬くなり、円筒状に成形することが難しいために好ましくなく、また、上記下限未満となると、内管の質量による変形や、耐火二層管を施工する際にスライドさせる時の強度が不足するために好ましくない。また、断熱・吸音材料の厚さは、５〜５０ｍｍ、好ましくは１０〜３０ｍｍの範囲内である。ここで、厚さが５０ｍｍを超えると、厚さが増すにつれて耐火二層管の断面積が大きくなり過ぎたり、モルタル製外管の質量が大きくなり過ぎるために好ましくなく、また、厚さが５ｍｍ未満であると、充分な断熱・吸音効果が得られないために好ましくない。 Furthermore, in the present invention, the heat insulating / sound absorbing material constituting the heat insulating / sound absorbing tube is not particularly limited as long as it is a material having heat insulating properties, sound absorbing properties and elasticity, but inorganic fibers such as rock wool, glass wool, etc. It is preferable to use a felt or mat of polyester or a mat of polyester fiber. Here, when glass wool is used as the heat insulating / sound absorbing tube, the bulk density thereof is in the range of 10 to 96 kg / m 3 , preferably 24 to 32 kg / m 3 . Moreover, when using rock wool, the bulk density is 25-300 kg / m < 3 >, Preferably it exists in the range of 40-200 kg / m < 3 >. Further, when a polyester fiber mat is used, its bulk density is in the range of 10 to 96 kg / m 3 , preferably 24 to 32 kg / m 3 . Here, when the bulk density exceeds the above upper limit, the material becomes hard and is not preferable because it is difficult to form a cylindrical shape. When the bulk density is less than the above lower limit, deformation due to the mass of the inner tube or fire-resistant double-layer pipe This is not preferable because the strength when sliding is insufficient. The thickness of the heat insulating / sound absorbing material is in the range of 5 to 50 mm, preferably 10 to 30 mm. Here, if the thickness exceeds 50 mm, the cross-sectional area of the refractory double-layer tube becomes too large as the thickness increases, or the mass of the mortar outer tube becomes too large, and the thickness is 5 mm. If it is less than 1, it is not preferable because sufficient heat insulation / sound absorption effect cannot be obtained.
なお、本発明において、少なくとも断熱・吸音管のモルタル製外管と接する面、即ち、外表面に金属フィルムを張り付けることが好ましい。金属フィルムとしては、例えばアルミニウム箔等を用いることができる。また、断熱・吸音管の内表面にも金属フィルムを張り付けると、スライド性を向上させることができる。 In the present invention, it is preferable to attach a metal film to at least the surface of the heat insulating / sound absorbing tube contacting the mortar outer tube, that is, the outer surface. For example, an aluminum foil or the like can be used as the metal film. Further, when a metal film is attached to the inner surface of the heat insulating / sound absorbing tube, the slidability can be improved.
本発明は、まず、断熱・吸音管に内管を挿入した後、断熱・吸音管に張り付けられている金属フィルムの外周面に接着剤を塗布し、前記内管を挿入したまま断熱・吸音管を予め作製されたモルタル製外管に挿入することにより、モルタル製外管の内周に、断熱・吸音管を固定するものである。なお、接着剤としては、変成シリコーン樹脂系、エポキシ樹脂系、ウレタン樹脂系、酢酸ビニル系等が好適である。 The present invention firstly inserts an inner tube into a heat insulating / sound absorbing tube, then applies an adhesive to the outer peripheral surface of a metal film attached to the heat insulating / sound absorbing tube, and the heat insulating / sound absorbing tube remains inserted. Is inserted into a mortar outer pipe prepared in advance, thereby fixing the heat insulating and sound absorbing pipe to the inner periphery of the mortar outer pipe. As the adhesive, a modified silicone resin system, an epoxy resin system, a urethane resin system, a vinyl acetate system and the like are suitable.
上述のようにして得られた耐火二層管は、断熱・吸音管とモルタル製外管が固定されており、断熱・吸音管と内管とはスライド可能な構成とすることができ、良好な施工性を付与することができる。 The fireproof double-layered tube obtained as described above has a heat insulating / sound absorbing tube and an outer tube made of mortar fixed, and the heat insulating / sound absorbing tube and the inner tube can be configured to be slidable. Workability can be imparted.
以下に実施例を挙げて本発明の耐火二層管の製造方法を更に説明する。
実施例
両面にアルミニウム箔が張り付けられた、かさ密度：２４ｋｇ／ｍ３で、厚さ：２５ｍｍのグラスウールマットを用い、外径：１８３ｍｍ、内径：１１４ｍｍ、長さ２０００ｍｍの断熱・吸音管を作製した。
次に、外径：１１４ｍｍ、内径：１００ｍｍ、長さ：２１００ｍｍの塩化ビニル製の内管を、断熱・吸音管に挿入した。
これとは別に、モルタル製外管の製造装置としてフローオン式抄造装置を使用し、金属製芯管（外径：１６６．３ｍｍ）を抄造装置のエンドレスフェルトに当接して配置する。次いで、エンドレスフェルトを稼動し、モルタル製外管を形成するための原料として、セメント７２質量％、充填材として炭酸カルシウム９質量％及びパーライト８質量％、繊維原料としてけい酸マグネシウム質無機繊維（石綿を除く）６質量％及び木質パルプ５質量％を使用し、前記原料に水を加えて混合した原料スラリー（固形分濃度：１０質量％）をエンドレスフェルト上面上に供給し、エンドレスフェルト下面側から吸引脱水してモルタルフィルムを形成し、抄造装置のエンドレスフェルトに当接して配置された金属製芯管（外径：１６６．３ｍｍ）に所定の厚さとなるまで巻き取り、７０℃で１．５時間一次養生した後、金属製芯管を抜き取り、更に、自然養生で２週間乾燥して外径：１８３ｍｍ、内径：１６８ｍｍ、長さ：２０００ｍｍのモルタル製外管を作製した。
次に、断熱、吸音管の外周面側のアルミニウム箔上に、変成シリコーン樹脂系接着剤を塗布した後、内管が挿入された断熱・吸音管をモルタル製外管に挿入して、モルタル製外管の内周面に断熱・吸音管を接着することにより耐火二層管を得た。
得られた耐火二層管は、モルタル製外管と、内管とがスライド可能な状態となっており、良好な施工性を有するものであった。
The method for producing a fireproof double-layered tube of the present invention will be further described with reference to the following examples.
Example A heat insulation / sound absorption tube having an outer diameter of 183 mm, an inner diameter of 114 mm, and a length of 2000 mm was prepared using a glass wool mat with a bulk density of 24 kg / m 3 and a thickness of 25 kg, with aluminum foil attached to both sides. .
Next, an inner tube made of vinyl chloride having an outer diameter of 114 mm, an inner diameter of 100 mm, and a length of 2100 mm was inserted into the heat insulating and sound absorbing tube.
Separately, a flow-on papermaking apparatus is used as a mortar outer pipe manufacturing apparatus, and a metal core pipe (outer diameter: 166.3 mm) is disposed in contact with the endless felt of the papermaking apparatus. Next, the endless felt is operated, and the raw material for forming the outer tube made of mortar is 72% by mass of cement, 9% by mass of calcium carbonate and 8% by mass of pearlite as filler, and magnesium silicate inorganic fiber (asbestos) as the fiber raw material. 6% by mass) and 5% by mass of wood pulp, and a raw material slurry (solid content concentration: 10% by mass) prepared by adding water to the raw material and mixing it is supplied onto the upper surface of the endless felt, and from the lower surface side of the endless felt A mortar film is formed by suction dehydration, wound up on a metal core tube (outer diameter: 166.3 mm) placed in contact with the endless felt of the paper making apparatus until a predetermined thickness is obtained, and is 1.5 at 70 ° C. After the primary curing for a period of time, the metal core tube is taken out and further dried by natural curing for 2 weeks, outer diameter: 183 mm, inner diameter: 168 mm, length: 20 To prepare a 0mm of mortar made outer tube.
Next, after applying a modified silicone resin adhesive on the aluminum foil on the outer peripheral surface side of the heat insulating and sound absorbing tube, the heat insulating and sound absorbing tube with the inner tube inserted is inserted into the mortar outer tube, A heat-resistant and sound-absorbing tube was bonded to the inner peripheral surface of the outer tube to obtain a fireproof double-layer tube.
The obtained fireproof two-layer pipe was in a state in which the mortar outer pipe and the inner pipe were slidable, and had good workability.
本発明の耐火二層管は、ビルや集合住宅の排水管として好適に使用することができる。 The fireproof two-layer pipe of the present invention can be suitably used as a drain pipe for buildings and apartment houses.
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| JP2011253708A JP5404749B2 (en) | 2011-11-21 | 2011-11-21 | Manufacturing method of fireproof double-layer pipe |
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| JP2007091528A Division JP4970110B2 (en) | 2007-03-30 | 2007-03-30 | Manufacturing method of fireproof double-layer pipe |
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| JP2001074191A (en) * | 1999-09-03 | 2001-03-23 | Asano Slate Co Ltd | Fireproofing three-layer pipe |
| JP4537173B2 (en) * | 2004-09-16 | 2010-09-01 | フネンアクロス株式会社 | Sound insulation type outer tube for fireproof two-layer tube and its manufacturing method |
| JP4463073B2 (en) * | 2004-09-22 | 2010-05-12 | フネンアクロス株式会社 | Refractory double-layer pipe |
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