JP2007313700A - Manufacturing method of waterproof pan - Google Patents

Manufacturing method of waterproof pan Download PDF

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JP2007313700A
JP2007313700A JP2006143659A JP2006143659A JP2007313700A JP 2007313700 A JP2007313700 A JP 2007313700A JP 2006143659 A JP2006143659 A JP 2006143659A JP 2006143659 A JP2006143659 A JP 2006143659A JP 2007313700 A JP2007313700 A JP 2007313700A
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electric heater
frp layer
waterproof pan
layer
frp
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JP4862490B2 (en
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Masahide Kawamura
正英 川村
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a waterproof pan not displacing an electric heater. <P>SOLUTION: When the preform member 19 of the waterproof pan 1 is manufactured, the electric heater 35 is placed on a first FRP layer 20 and a temporarily fastening FRP layer 36 is formed on the electric heater 35 while a reinforcing material 21 is placed on the temporarily fastening FRP layer 36 and a second FRP layer 23 is formed on the reinforcing material 21. Since the electric heater 35 is not moved by the injection force of a resin even in a case that the preform member 19 is covered with external resin layers 24 and 25 by a resin transfer molding (RTM) method by interposing the electric heater 35 between the first and the second FRP layers 20 and 23, the displacement of the electric heater 35 can be prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、浴室、洗面所、洗濯機置き場等に用いられる防水パンの製造方法に関する。   The present invention relates to a method for producing a waterproof pan used in a bathroom, a washroom, a washing machine storage, and the like.

従来、繊維強化プラスチック（ＦＲＰ）の成形技術としては、ハンドレイアップ（ＨＬＵ）成形法やレジン・トランスファー・モールディング（ＲＴＭ）成形法がある（特許文献１）。   Conventionally, as a technique for molding fiber reinforced plastic (FRP), there are a hand lay-up (HLU) molding method and a resin transfer molding (RTM) molding method (Patent Document 1).

そして、浴室等の防水パンをＨＬＵ成形法によりＦＲＰで製造するに際しては、作業者による手作業で繊維に樹脂等を含浸させながら積み重ね成形するとともに、足元暖房用の電熱ヒータを設ける場合には、樹脂等を含浸させた繊維を積み重ねる途中で電熱ヒータを介在させていた（特許文献２）。   And when manufacturing waterproof pans such as bathrooms with FLU by the HLU molding method, while forming by stacking while impregnating the resin etc. into the fibers manually by the operator, when providing an electric heater for foot heating, An electric heater was interposed in the middle of stacking fibers impregnated with resin or the like (Patent Document 2).

また、表裏のＦＲＰシートの間に電熱ヒータを介在させて、プレスにより埋設させることで、浴室等の防水パンを製造するものがある（特許文献３）。   Moreover, there exists a thing which manufactures waterproof pans, such as a bathroom, by interposing an electric heater between the FRP sheets of the front and back, and embedding with a press (patent document 3).

ところで、ＲＴＭ成形法により、防水パンを成形する技術を本出願人が開発している。このＲＴＭ成形法によれば、ＨＬＵ成形法と比べて、作業者による品質のばらつきが無く、製造作業も大幅に効率化するという利点がある。
特開２００６−７０６８４号公報 特開平９−２５６４３７号公報 特開２００２−３９５５８号公報 By the way, the present applicant has developed a technique for forming a waterproof pan by the RTM molding method. According to this RTM molding method, there is an advantage that there is no variation in quality by the operator and that the manufacturing operation is greatly improved in comparison with the HLU molding method.
JP 2006-70684 A Japanese Patent Laid-Open No. 9-256437 JP 2002-39558 A

しかしながら、ＲＴＭ成形法で防水パンを成形する場合には、プリフォーム部材を被覆する外装用樹脂の圧入力で電熱ヒータが移動して、位置ズレが発生しやすいという問題があった。   However, when the waterproof pan is formed by the RTM molding method, there is a problem that the electric heater is moved by the pressure input of the exterior resin that covers the preform member, and the positional deviation is likely to occur.

本発明は、前記問題を解消するためになされたもので、電熱ヒータの位置ズレが発生しない防水パンの製造方法を提供することを目的とするものである。   The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for manufacturing a waterproof pan that does not cause displacement of the electric heater.

前記課題を解決するために、本発明は、プリフォーム用下型に第１のＦＲＰ層を形成し、第１のＦＲＰ層の上に第２のＦＲＰ層を形成することで製造したプリフォーム部材を外装用樹脂層で被覆する防水パンの製造方法であって、第１のＦＲＰ層の上に電熱ヒータを載置し、電熱ヒータの上に第２のＦＲＰ層を形成して、第１のＦＲＰ層と第２のＦＲＰ層との間に電熱ヒータを介在させていることを特徴とする防水パンの製造方法を提供するものである。   In order to solve the above-mentioned problems, the present invention provides a preform member manufactured by forming a first FRP layer on a preform lower mold and forming a second FRP layer on the first FRP layer. Is a waterproof pan manufacturing method in which an electric heater is placed on a first FRP layer, a second FRP layer is formed on the electric heater, An object of the present invention is to provide a method for producing a waterproof pan, characterized in that an electric heater is interposed between the FRP layer and the second FRP layer.

請求項２のように、第１のＦＲＰ層の上に電熱ヒータを載置し、電熱ヒータの上に仮止め用のＦＲＰ層を形成し、仮止め用のＦＲＰ層の上に補強材を載置することが好ましい。   As in claim 2, an electric heater is placed on the first FRP layer, a temporary FRP layer is formed on the electric heater, and a reinforcing material is placed on the temporary FRP layer. It is preferable to place them.

請求項３のように、前記電熱ヒータは、浴室用の防水パンの洗い場となる部分に配置していることが好ましい。   According to a third aspect of the present invention, it is preferable that the electric heater is disposed in a portion that becomes a washing place for a waterproof pan for a bathroom.

請求項４のように、前記プリフォーム部材を外装用樹脂層で被覆する工程は、レジン・トランスファー・モールディング成形法であることが好ましい。   According to a fourth aspect of the present invention, the step of coating the preform member with the exterior resin layer is preferably a resin transfer molding method.

本発明によれば、プリフォーム部材の製造時に、第１のＦＲＰ層と第２のＦＲＰ層との間に電熱ヒータを介在させることで、プリフォーム部材を外装用樹脂層で被覆する場合に、電熱ヒータが移動しないので、位置ズレを未然に防止できるようになる。   According to the present invention, when the preform member is coated with the exterior resin layer by interposing an electric heater between the first FRP layer and the second FRP layer at the time of manufacturing the preform member, Since the electric heater does not move, displacement can be prevented beforehand.

請求項２によれば、第１のＦＲＰ層の上に電熱ヒータを載置し、その上に補強材を載置するので、補強材が断熱材として機能することで、電熱ヒータの熱が第１のＦＲＰ層と表面側の樹脂層とを介して防水パンの表面部分に効率的に伝導されるようになる。   According to the second aspect, since the electric heater is placed on the first FRP layer and the reinforcing material is placed thereon, the reinforcing material functions as a heat insulating material so that the heat of the electric heater is reduced. It is efficiently conducted to the surface portion of the waterproof pan through the one FRP layer and the resin layer on the surface side.

請求項３によれば、浴室用の防水パンの洗い場部分だけを効果的に暖房できるようになる。   According to the third aspect, only the washing area of the waterproof pan for the bathroom can be effectively heated.

請求項４によれば、レジン・トランスファー・モールディング（ＲＴＭ）成形法でプリフォーム部材を外装用樹脂層で被覆する場合であっても、樹脂の圧入力で電熱ヒータが移動しないので、位置ズレを未然に防止できるようになる。   According to the fourth aspect, even when the preform member is covered with the exterior resin layer by the resin transfer molding (RTM) molding method, the electric heater does not move by the resin pressure input. It will be possible to prevent it.

以下、本発明を実施するための最良の形態について、図面を参照しながら詳細に説明する。   Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

図７に示すように、例えば浴室の防水パン１は、浴室内の床材５の上に配置するものであり、洗い場２と浴槽４の置き場３とに区画されている。この防水パン１は、ボルト・ナット等（具体的に図示せず。）で床材５に固定するようになっている。   As shown in FIG. 7, for example, a waterproof pan 1 in a bathroom is arranged on a flooring 5 in a bathroom, and is divided into a washing place 2 and a place 3 for a bathtub 4. The waterproof pan 1 is fixed to the flooring 5 with bolts and nuts (not specifically shown).

図１（ａ）（ｂ）（ｃ）および図２（ａ）は、防水パン１内にインサートモールドするプリフォーム（強化材）部材１９を製造する工程図である。   FIGS. 1A, 1 </ b> B, and 2 </ b> C are process diagrams for manufacturing a preform (reinforcing material) member 19 that is insert-molded into the waterproof pan 1.

図１（ａ）の工程のように、基台９の上のプリフォーム用下型１１の上面（表面）に、スプレー１０によって、ガラス繊維束とバインダーとの混合物を所定厚み（例えば約３〜４ｍｍ）で層状に吹き付けて、第１のＦＲＰ層２０〔図６（ａ）参照〕を形成する。この場合、第１のＦＲＰ層２０をプリフォーム用下型１１の上面に倣わせるために、図１（ｃ）の工程が終了するまで吸引する（矢印ａ参照）。   As shown in FIG. 1A, the mixture of the glass fiber bundle and the binder is applied to the upper surface (surface) of the preform lower mold 11 on the base 9 by a spray 10 with a predetermined thickness (for example, about 3 to 3). 4 mm) to form a first FRP layer 20 (see FIG. 6A). In this case, in order to make the first FRP layer 20 follow the upper surface of the lower mold 11 for preform, suction is performed until the step of FIG. 1C is completed (see arrow a).

そして、図１（ｂ）の工程のように、洗い場２となる部分（図の左側）に対応する第１のＦＲＰ層２０の上に所定厚み（例えば約１ｍｍ）のシート状電熱ヒータ３５を載置して、電熱ヒータ３５の上に、スプレー１０によって、ガラス繊維束とバインダーとの混合物を所定厚み（例えば約１ｍｍ）で層状に吹き付けて、仮止め用のＦＲＰ層３６〔図６（ａ）参照〕を形成する。この仮止め用のＦＲＰ層３６によって、電熱ヒータ３５は、第１のＦＲＰ層２０の所定位置から移動しないように仮止めされるようになる。   1B, a sheet-like electric heater 35 having a predetermined thickness (for example, about 1 mm) is placed on the first FRP layer 20 corresponding to the portion (left side of the drawing) that becomes the washing place 2. The glass fiber bundle and binder mixture is sprayed onto the electric heater 35 in a layer with a predetermined thickness (for example, about 1 mm) by the spray 10 to temporarily fix the FRP layer 36 (FIG. 6A). Reference] is formed. The electric heater 35 is temporarily fixed by the FRP layer 36 for temporary fixing so as not to move from a predetermined position of the first FRP layer 20.

ついで、図１（ｃ）の工程のように、洗い場２側（図の左側）では、電熱ヒータ３５の仮止め用のＦＲＰ層３６の上に、浴槽置き場３側（図の右側）では、第１のＦＲＰ層２０の上に、それぞれ所定厚み（例えば８．５ｍｍ）の補強用合板（補強材）２１を載置するとともに、この各合板２１の上に、所定寸法（例えば４０×４０ｍｍ角）の補強用角材（補強材）２２を所定位置に載置する〔図６（ａ）参照〕。ここで、図５（ｂ）に示したように、合板２１に、電熱ヒータ３５が仮止め用のＦＲＰ層３６とともに嵌り込む凹部２１ａとリード線３７の引き出し用溝部２１ｂとを形成しておけば、電熱ヒータ３５自体に大きな荷重が作用することを抑制することができる。なお、合板２１と角材２２は木製である。   Next, as in the step of FIG. 1C, on the washing place 2 side (left side of the figure), on the FRP layer 36 for temporary fixing of the electric heater 35, on the bathtub storage place 3 side (right side of the figure) A reinforcing plywood (reinforcing material) 21 having a predetermined thickness (for example, 8.5 mm) is placed on one FRP layer 20, and predetermined dimensions (for example, 40 × 40 mm square) are provided on each plywood 21. The reinforcing square member (reinforcing material) 22 is placed at a predetermined position (see FIG. 6A). Here, as shown in FIG. 5B, if the plywood 21 is formed with a recess 21 a into which the electric heater 35 is fitted together with the FRP layer 36 for temporary fixing and a lead-out groove 21 b of the lead wire 37. It is possible to suppress a large load from acting on the electric heater 35 itself. The plywood 21 and the square member 22 are made of wood.

そして、載置した合板２１と角材２２の上から、スプレー１０によって、ガラス繊維束とバインダーとの混合物を所定厚み（例えば約１〜３ｍｍ）で層状に吹き付けて、第２のＦＲＰ層２３〔図６（ａ）参照〕を形成する。   Then, a mixture of a glass fiber bundle and a binder is sprayed in layers with a predetermined thickness (for example, about 1 to 3 mm) by spray 10 from above the placed plywood 21 and square member 22, and the second FRP layer 23 [FIG. 6 (a)].

その後、図２（ａ）の工程のように、第２のＦＲＰ層２３の上にプリフォーム用上型１２を配置して、上下型をクランプした後に、上下型を所定温度（例えば約６０℃）の乾燥炉に所定時間（例えば約４５分）入れる。   Thereafter, as shown in FIG. 2A, the preform upper mold 12 is disposed on the second FRP layer 23, the upper and lower molds are clamped, and then the upper and lower molds are moved to a predetermined temperature (for example, about 60 ° C.). ) In a drying furnace for a predetermined time (for example, about 45 minutes).

所定時間の経過後、上下型を乾燥炉から出し、上下型をアンクランプして、図２（ｂ）（ｃ）のように、完成したプリフォーム部材１９を取り外す。   After a predetermined time has elapsed, the upper and lower molds are taken out of the drying furnace, the upper and lower molds are unclamped, and the completed preform member 19 is removed as shown in FIGS.

図３（ａ）（ｂ）（ｃ）および図４（ａ）（ｂ）（ｃ）は、プリフォーム部材１９をインサートモールドした防水パン１を製造する工程図である。   FIGS. 3A, 3B, 3C and 4A, 4B, and 4C are process diagrams for manufacturing the waterproof pan 1 in which the preform member 19 is insert-molded.

図３（ａ）の工程のように、スプレー１３によって、成形用下型１４の上面（表面）に、ゲルコート〔第１の樹脂（イソ系樹脂）〕を所定厚み（例えば約０．３〜０．５ｍｍ）で層状に吹き付けて、第１の外装用樹脂層２４を形成する〔図６（ａ）参照〕。   As shown in FIG. 3A, the gel coat [first resin (iso-based resin)] is applied to the upper surface (surface) of the molding lower mold 14 by a spray 13 to a predetermined thickness (for example, about 0.3 to 0). 0.5 mm) to form a first exterior resin layer 24 (see FIG. 6A).

図３（ｂ）の工程のように、成形用下型１４を所定温度（例えば約７０℃）の乾燥炉に所定時間（例えば約１０分）入れて、第１の樹脂層２４を硬化させる。   As in the step of FIG. 3B, the lower mold 14 is placed in a drying furnace at a predetermined temperature (for example, about 70 ° C.) for a predetermined time (for example, about 10 minutes), and the first resin layer 24 is cured.

図３（ｃ）の工程のように、成形用下型１４を乾燥炉から出し、硬化した第１の樹脂層２４の上にプリフォーム部材１９を載置する。   As in the step of FIG. 3C, the lower mold 14 is removed from the drying furnace, and the preform member 19 is placed on the cured first resin layer 24.

図４（ａ）の工程のように、プリフォーム部材１９の上の成形用上型１５を配置して、上下型をクランプした後に、樹脂漏れを防止するために、上下型の外周フランジ部を所定圧力（例えば約−０．０８ＭＰａ）で吸引する（矢印ｂ参照）。さらに、樹脂の流動をアシストするために、上下型の内部を所定圧力（例えば約−０．０４ＭＰａ）で吸引する（矢印ｃ参照）。   As shown in FIG. 4A, after the upper mold 15 for molding is placed on the preform member 19 and the upper and lower molds are clamped, the outer peripheral flange portions of the upper and lower molds are formed to prevent resin leakage. Suction is performed at a predetermined pressure (for example, about −0.08 MPa) (see arrow b). Further, in order to assist the flow of the resin, the inside of the upper and lower molds is sucked at a predetermined pressure (for example, about −0.04 MPa) (see arrow c).

図４（ｂ）の工程のように、不飽和ポリエステル樹脂〔第２の樹脂（イソ系樹脂）〕と充填材（例えば炭酸カルシウム ０〜１００ｐｈｒ）との配合物を、硬化剤とともにタンク１６から所定圧力（例えば０．３〜０．５ＭＰａ）でプリフォーム部材１９と成形用上型１５との間の隙間に圧入して、所定厚み（例えば約０．３〜０．５ｍｍ）の第２の外装用樹脂層２５を形成する〔図６（ａ）参照〕。   As in the step of FIG. 4B, a blend of unsaturated polyester resin [second resin (iso-based resin)] and filler (for example, calcium carbonate 0 to 100 phr) is predetermined from tank 16 together with a curing agent. A second exterior having a predetermined thickness (for example, about 0.3 to 0.5 mm) is press-fitted into the gap between the preform member 19 and the molding upper mold 15 with pressure (for example, 0.3 to 0.5 MPa). The resin layer 25 is formed [see FIG. 6 (a)].

図４（ｃ）の工程のように、常温で所定時間（例えば約６０〜９０分）放置して各樹脂を硬化させた後に、図５（ａ）のように、完成した防水パン１を上下型から取り外す。   As shown in FIG. 4C, after each resin is cured by leaving it at room temperature for a predetermined time (for example, about 60 to 90 minutes), the finished waterproof pan 1 is moved up and down as shown in FIG. Remove from mold.

これにより、プリフォーム部材１９は、第１の外装用樹脂層２４と第２の外装用樹脂層２５とで被覆（コーティング）されるようになる。   As a result, the preform member 19 is coated (coated) with the first exterior resin layer 24 and the second exterior resin layer 25.

前記のような防水パン１の製造工程（方法）であれば、レジン・トランスファー・モールディング（ＲＴＭ）成形法で、ＦＲＰ成形品である防水パン１を成形するに際して、プリフォーム部材１９の製造時に、第１のＦＲＰ層２０と第２のＦＲＰ層２３との間に電熱ヒータ３５を介在させることで、プリフォーム部材１９を第１、第２の外装用樹脂層２４，２５で被覆する場合に、第２の外装用樹脂層２５の圧入力で電熱ヒータ３５が移動しないので、位置ズレを未然に防止できるようになる。   If the waterproof pan 1 is a manufacturing process (method) as described above, when forming the waterproof pan 1 which is an FRP molded product by a resin transfer molding (RTM) molding method, When the preform member 19 is covered with the first and second exterior resin layers 24 and 25 by interposing the electric heater 35 between the first FRP layer 20 and the second FRP layer 23, Since the electric heater 35 does not move by the pressure input of the second exterior resin layer 25, it is possible to prevent positional displacement.

また、第１のＦＲＰ層２０の上に電熱ヒータ３５を載置し、その上に合板（補強材）２１を載置するので、合板２１が断熱材として機能することで、電熱ヒータ３５の熱が第１のＦＲＰ層２０と表面側の第１の外装用樹脂層２４とを介して防水パン１の表面部分に効率的に伝導されるようになる。   Moreover, since the electric heater 35 is mounted on the first FRP layer 20 and the plywood (reinforcing material) 21 is mounted thereon, the plywood 21 functions as a heat insulating material, so that the heat of the electric heater 35 is increased. Is efficiently conducted to the surface portion of the waterproof pan 1 through the first FRP layer 20 and the first exterior resin layer 24 on the surface side.

さらに、電熱ヒータ３５は、浴室用の防水パン１であれば、洗い場２となる部分に配置しているから、洗い場２の部分だけを効果的に暖房できるようになる。   Further, if the electric heater 35 is a waterproof pan 1 for a bathroom, the electric heater 35 is arranged in a portion that becomes the washing place 2, so that only the portion of the washing place 2 can be effectively heated.

前記実施形態では、第１のＦＲＰ層２０の上に電熱ヒータ３５を載置し、電熱ヒータ３５の上に仮止め用のＦＲＰ層３６を形成し、仮止め用のＦＲＰ層３６の上に合板２１を載置し、合板２１の上に第２のＦＲＰ層２３を形成することで、プリフォーム部材１９を製造するものであったが、合板（補強材）が無い場合には、図６（ｂ）のように、第１のＦＲＰ層２０の上に電熱ヒータ３５を載置し、電熱ヒータ３５の上に第２のＦＲＰ層２３を形成することで、プリフォーム部材１９を製造することもできる。   In the embodiment, the electric heater 35 is placed on the first FRP layer 20, the temporary fixing FRP layer 36 is formed on the electric heater 35, and the plywood is formed on the temporary fixing FRP layer 36. 21, and the preform member 19 was manufactured by forming the second FRP layer 23 on the plywood 21, but when there is no plywood (reinforcing material), FIG. As shown in b), the preform member 19 may be manufactured by placing the electric heater 35 on the first FRP layer 20 and forming the second FRP layer 23 on the electric heater 35. it can.

前記実施形態では、ＲＴＭ成形法でプリフォーム部材１９を外装用樹脂層２４，２５で被覆するものであったが、ＨＬＵ成形法、その他の成形法であっても、同様にして電熱ヒータ３５の位置ズレを未然に防止することができる。   In the above-described embodiment, the preform member 19 is covered with the exterior resin layers 24 and 25 by the RTM molding method. However, the electric heater 35 is similarly formed by the HLU molding method and other molding methods. Misalignment can be prevented in advance.

（ａ）〜（ｃ）は、本発明の実施形態に係る防水パン内にインサートモールドするプリフォーム部材を製造する工程図である。(A)-(c) is process drawing which manufactures the preform member insert-molded in the waterproofing pan which concerns on embodiment of this invention. （ａ）は、本発明の実施形態に係る防水パン内にインサートモールドするプリフォーム部材を製造する工程図、（ｂ）は、完成したプリフォーム部材の断面図、（ｃ）は、完成したプリフォーム部材の斜視図である。(A) is process drawing which manufactures the preform member insert-molded in the waterproofing pan which concerns on embodiment of this invention, (b) is sectional drawing of the completed preform member, (c) is the completed preform. It is a perspective view of a reforming member. （ａ）〜（ｃ）は、プリフォーム部材をインサートモールドした防水パンを製造する工程図である。(A)-(c) is process drawing which manufactures the waterproofing bread which insert-molded the preform member. （ａ）〜（ｃ）は、プリフォーム部材をインサートモールドした防水パンを製造する工程図である。(A)-(c) is process drawing which manufactures the waterproofing bread which insert-molded the preform member. （ａ）は完成した防水パンの斜視図、（ｂ）は合板と電熱ヒータの斜視図である。(A) is a perspective view of the completed waterproof pan, (b) is a perspective view of a plywood and an electric heater. （ａ）は防水パンの要部断面図、（ｂ）は他の実施形態のプリフォーム部材の要部断面図である。(A) is principal part sectional drawing of a waterproof pan, (b) is principal part sectional drawing of the preform member of other embodiment. 本発明の実施形態に係る防水パンの断面図である。It is sectional drawing of the waterproofing pan which concerns on embodiment of this invention.

符号の説明Explanation of symbols

１ 防水パン
２ 洗い場
１１ プリフォーム用下型
１２ プリフォーム用上型
１４ 成形用下型
１５ 成形用上型
１９ プリフォーム部材
２０ 第１のＦＲＰ層
２１ 合板（補強材）
２２ 角材（補強材）
２３ 第２のＦＲＰ層
２４ 第１の樹脂層
２５ 第２の樹脂層
３５ 電熱ヒータ
３６ 仮止め用ＦＲＰ層 DESCRIPTION OF SYMBOLS 1 Waterproofing pan 2 Washing place 11 Lower mold for preform 12 Upper mold for preform 14 Lower mold for molding 15 Upper mold for molding 19 Preform member 20 First FRP layer 21 Plywood (reinforcing material)
22 Square material (reinforcing material)
23 Second FRP layer 24 First resin layer 25 Second resin layer 35 Electric heater 36 Temporary fixing FRP layer

Claims (4)

プリフォーム用下型に第１のＦＲＰ層を形成し、第１のＦＲＰ層の上に第２のＦＲＰ層を形成することで製造したプリフォーム部材を外装用樹脂層で被覆する防水パンの製造方法であって、
第１のＦＲＰ層の上に電熱ヒータを載置し、電熱ヒータの上に第２のＦＲＰ層を形成して、第１のＦＲＰ層と第２のＦＲＰ層との間に電熱ヒータを介在させていることを特徴とする防水パンの製造方法。 Manufacturing a waterproof pan for coating a preform member manufactured by forming a first FRP layer on a preform lower mold and forming a second FRP layer on the first FRP layer with an exterior resin layer A method,
An electric heater is placed on the first FRP layer, a second FRP layer is formed on the electric heater, and the electric heater is interposed between the first FRP layer and the second FRP layer. A method for producing a waterproof pan, characterized by comprising: 第１のＦＲＰ層の上に電熱ヒータを載置し、電熱ヒータの上に仮止め用のＦＲＰ層を形成し、仮止め用のＦＲＰ層の上に補強材を載置したことを特徴とする請求項１に記載の防水パンの製造方法。   An electric heater is mounted on the first FRP layer, an FRP layer for temporary fixing is formed on the electric heater, and a reinforcing material is mounted on the FRP layer for temporary fixing. The method for producing a waterproof pan according to claim 1. 前記電熱ヒータは、浴室用の防水パンの洗い場となる部分に配置していることを特徴とする請求項１または２に記載の防水パンの製造方法。   The method for manufacturing a waterproof pan according to claim 1, wherein the electric heater is disposed in a portion that serves as a washing place for a waterproof pan for a bathroom. 前記プリフォーム部材を外装用樹脂層で被覆する工程は、レジン・トランスファー・モールディング成形法であることを特徴とする請求項１〜３のいずれか一項に記載の防水パンの製造方法。   The method for producing a waterproof pan according to any one of claims 1 to 3, wherein the step of coating the preform member with an exterior resin layer is a resin transfer molding method.
JP2006143659A 2006-05-24 2006-05-24 Manufacturing method of waterproof pan Expired - Fee Related JP4862490B2 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5032745B1 (en) * 1970-12-30 1975-10-23
JPS63227309A (en) * 1987-03-17 1988-09-21 Inax Corp Molding of preform
JPH03129214A (en) * 1989-10-13 1991-06-03 Matsushita Electric Ind Co Ltd Floor device for heater
JPH044612A (en) * 1990-04-23 1992-01-09 Sony Corp Pattern extraction circuit
JPH0719511A (en) * 1993-06-30 1995-01-20 Matsushita Electric Ind Co Ltd Bathroom unit
JPH09222232A (en) * 1996-02-15 1997-08-26 Toto Ltd Heater device embedded type water-proof floor and its manufacturing method
JP2002039558A (en) * 2000-04-25 2002-02-06 Matsushita Electric Works Ltd Method for manufacturing waterproof floor
JP2002153392A (en) * 2000-11-20 2002-05-28 Emoto Kogyo Kk Floor structure of unit bath

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5032745B1 (en) * 1970-12-30 1975-10-23
JPS63227309A (en) * 1987-03-17 1988-09-21 Inax Corp Molding of preform
JPH03129214A (en) * 1989-10-13 1991-06-03 Matsushita Electric Ind Co Ltd Floor device for heater
JPH044612A (en) * 1990-04-23 1992-01-09 Sony Corp Pattern extraction circuit
JPH0719511A (en) * 1993-06-30 1995-01-20 Matsushita Electric Ind Co Ltd Bathroom unit
JPH09222232A (en) * 1996-02-15 1997-08-26 Toto Ltd Heater device embedded type water-proof floor and its manufacturing method
JP2002039558A (en) * 2000-04-25 2002-02-06 Matsushita Electric Works Ltd Method for manufacturing waterproof floor
JP2002153392A (en) * 2000-11-20 2002-05-28 Emoto Kogyo Kk Floor structure of unit bath

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