JP2012016666A - Method for manufacturing septic tank - Google Patents

Method for manufacturing septic tank Download PDF

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Publication number
JP2012016666A
JP2012016666A JP2010155934A JP2010155934A JP2012016666A JP 2012016666 A JP2012016666 A JP 2012016666A JP 2010155934 A JP2010155934 A JP 2010155934A JP 2010155934 A JP2010155934 A JP 2010155934A JP 2012016666 A JP2012016666 A JP 2012016666A
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septic tank
adhesive
treatment
primer
manufacturing
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JP5617391B2 (en
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Kiminori Araki
公範 荒木
Junji Ishizuka
順司 石塚
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/208—Off-grid powered water treatment

Abstract

PROBLEM TO BE SOLVED: To provide a method for easily and safely manufacturing a septic tank made of fiber-reinforced resin having excellent adhesion strength.SOLUTION: The method for manufacturing a septic tank includes steps of:molding a plurality of components made of a fiber reinforced resin using the SMC (sheet molding compound) method; applying an isocyanate-based primer to an adhesion surface of the components to be dried; applying a urethane resin-based adhesive onto the dried primer; and adhering and fixing the components via the adhesion surfaces to which the adhesive is applied. The isocyanate-based primer is applied after the adhesion surfaces of the components are subjected to corona treatment, ITRO treatment, or flame treatment. The adhesion surfaces of an upper tank 4 and a lower tank 5 constituting the body 1 of the septic tank, are subjected to corona treatment, ITRO treatment, or flame treatment in advance, and then the primer and the adhesive are applied thereto.

Description

本発明は浄化槽の製造方法に関し、更に詳しくは、接着強度が良好な繊維強化樹脂製の浄化槽を容易かつ安全に製造することができる浄化槽の製造方法に関する。   The present invention relates to a method for manufacturing a septic tank, and more particularly to a method for manufacturing a septic tank that can easily and safely manufacture a septic tank made of fiber reinforced resin having good adhesive strength.

一般に、生活排水を処理する浄化槽は、樹脂と繊維とからなるシートを型内で成形するＳＭＣ法（Sheet Molding Compound）により製作された複数の部品を、接着して組み立てることで製造される（例えば、特許文献１を参照）。   Generally, a septic tank for treating domestic wastewater is manufactured by bonding and assembling a plurality of parts manufactured by the SMC method (Sheet Molding Compound) in which a sheet made of resin and fiber is molded in a mold (for example, , See Patent Document 1).

この接着工程においては、耐水性及び接着強度の観点から、接着面にプライマーを塗布して乾燥させた後に接着剤を塗布するようにしているが、接着強度を向上させるために、あらかじめ接着面をバフがけすることが行われている。   In this bonding process, from the viewpoint of water resistance and adhesive strength, the primer is applied to the adhesive surface and then dried, and then the adhesive is applied. Buffing is done.

しかし、このバフがけ作業は人手により行わなければならないため、非常に手間がかかるという問題があった。また、バフがけ時に発生する粉塵が、人体や環境へ悪影響を与える可能性も懸念されていた。   However, since this buffing work has to be performed manually, there is a problem that it takes much time. In addition, there is a concern that dust generated during buffing may adversely affect the human body and the environment.

そのため、それらの問題を解決できるような浄化槽の製造方法が求められている。   Therefore, there is a demand for a method for producing a septic tank that can solve these problems.

特開平１１−２０７３７０号公報JP-A-11-207370

本発明の目的は、接着強度が良好な繊維強化樹脂製の浄化槽を、容易かつ安全に製造することができる浄化槽の製造方法を提供することにある。   The objective of this invention is providing the manufacturing method of the septic tank which can manufacture easily the septic tank made from a fiber reinforced resin with favorable adhesive strength.

上記の目的を達成する本発明の浄化槽の製造方法は、ＳＭＣ法により繊維強化樹脂製の部品を複数成形し、前記部品の接着面にイソシアネート系のプライマーを塗布した後に乾燥させ、前記乾燥したプライマーの上からウレタン樹脂系の接着剤を塗布し、前記接着剤が塗布された接着面を介して前記複数の部品同士を接着固定する工程を有する浄化槽の製造方法において、前記部品の接着面を、コロナ処理、イトロ処理又はフレーム処理した後に、前記イソシアネート系のプライマーを塗布することを特徴とするものである。   The method for producing a septic tank according to the present invention that achieves the above object comprises molding a plurality of fiber reinforced resin parts by the SMC method, applying an isocyanate primer on the adhesive surface of the part, drying the primer, and then drying the dried primer. In the manufacturing method of the septic tank, which has a step of applying and fixing a urethane resin-based adhesive from above, and bonding and fixing the plurality of components through an adhesive surface to which the adhesive is applied, The isocyanate primer is applied after corona treatment, itro treatment or flame treatment.

本発明の浄化槽の製造方法によれば、繊維強化樹脂製の部品の接着面をコロナ処理、イトロ処理又はフレーム処理した後に、イソシアネート系のプライマー及びウレタン樹脂系の接着剤を塗布してから部品同士を接着するようにしたので、それらの表面改質処理によって接着面の濡れ性が向上して接着剤との親和性が高くなるため、良好な接着強度を得ることができる。また、接着面をあらかじめバフがけする必要がないため、浄化槽を容易かつ安全に製造することができる。   According to the method for producing a septic tank of the present invention, after the corona treatment, itro treatment or flame treatment of the adhesion surface of the fiber reinforced resin parts, the isocyanate primer and the urethane resin adhesive are applied to each other. Since the surface modification treatment improves the wettability of the adhesive surface and increases the affinity with the adhesive, good adhesive strength can be obtained. Moreover, since it is not necessary to buff the adhesive surface in advance, the septic tank can be manufactured easily and safely.

本発明の浄化槽の製造方法により製造した浄化槽の斜視図である。It is a perspective view of the septic tank manufactured with the manufacturing method of the septic tank of this invention. 図１の浄化槽における接着部分の拡大断面図である。It is an expanded sectional view of the adhesion part in the septic tank of FIG.

以下に、本発明の実施の形態について、図面を参照して説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１は、本発明の実施形態からなる浄化槽の製造方法により製造した浄化槽の例を示す。   FIG. 1 shows an example of a septic tank manufactured by a septic tank manufacturing method according to an embodiment of the present invention.

この浄化槽は、中空の略直方体形状の槽本体１からなり、その内部は隔壁によって、ろ床室、ろ過室や消毒室などに区画されている。一方の側面に取り付けられた流入管２を通じて流入した生活排水は、それらの処理室を順に経るうちに含有する有機物が分解、除去され、消毒された後に他方の側面に取り付けられた放流管（図示せず）から下水道などへ放出される。また、それら処理室のメンテナンスのため、上部槽の上面にはマンホール口３が形成されている。   The septic tank is composed of a hollow tank body 1 having a substantially rectangular parallelepiped shape, and the inside thereof is partitioned by a partition wall into a filter bed chamber, a filtration chamber, a disinfection chamber, and the like. The domestic wastewater flowing in through the inflow pipe 2 attached to one side is decomposed, removed and disinfected after passing through the treatment chambers in order, and then the discharge pipe attached to the other side (Fig. (Not shown) to the sewer. For maintenance of these processing chambers, a manhole port 3 is formed on the upper surface of the upper tank.

浄化槽の槽本体１は、上槽４と下槽５とを、図２に示すように、互いに接着により水密にフランジ接合することで構成される。それら上槽４及び下槽５は、ＳＭＣ法（Sheet Molding Compound）により製作された繊維強化樹脂から形成されている。この繊維強化樹脂の種類としては、ガラス繊維に不飽和ポリエステル樹脂を含浸したものなどが例示される。また、接着方法としては、耐水性及び接着強度の観点から、接着面６、７にイソシアネート系のプライマーを塗布して乾燥させた後に、ウレタン樹脂系の接着剤を塗布する方法が採られる。イソシアネート系のプライマーとしては、２官能以上のイソシアネートを含むものが挙げられ、バインダーとしてウレタン樹脂やアクリル樹脂を配合してもよい。また、ウレタン樹脂系の接着剤としては、末端ＭＤＩ（ジフェニルメタンジイソシアナート）のウレタンプレポリマーと、カーボンブラックとを含むものが例示される。   As shown in FIG. 2, the tank body 1 of the septic tank is constituted by water-tightly flange-bonding the upper tank 4 and the lower tank 5 together by bonding. The upper tank 4 and the lower tank 5 are formed of a fiber reinforced resin manufactured by an SMC method (Sheet Molding Compound). Examples of the fiber reinforced resin include glass fiber impregnated with unsaturated polyester resin. Further, as a bonding method, from the viewpoint of water resistance and bonding strength, a method of applying a urethane resin-based adhesive after applying an isocyanate primer on the bonding surfaces 6 and 7 and drying it is employed. Examples of the isocyanate-based primer include those containing a bifunctional or higher isocyanate, and a urethane resin or an acrylic resin may be blended as a binder. Examples of the urethane resin adhesive include those containing terminal MDI (diphenylmethane diisocyanate) urethane prepolymer and carbon black.

このような浄化槽において、上槽４及び下槽５の接着面６、７は、あらかじめコロナ処理されている。ここでコロナ処理とは、処理基材にコロナ放電を照射する表面改質方法である。   In such a septic tank, the adhesive surfaces 6 and 7 of the upper tank 4 and the lower tank 5 are previously corona-treated. Here, the corona treatment is a surface modification method in which a treated substrate is irradiated with corona discharge.

このように、接着面６、７をあらかじめコロナ処理することにより、接着面の濡れ性が著しく向上し、プライマーや接着剤との親和性が高くなるので、接着強度を良好なものとすることができる。また、接着面６、７をあらかじめバフがけする必要がないため、浄化槽を容易かつ安全に製造することができる。   Thus, pre-corona treatment of the adhesive surfaces 6 and 7 significantly improves the wettability of the adhesive surface and increases the affinity with the primer and the adhesive, thereby improving the adhesive strength. it can. Moreover, since it is not necessary to buff the adhesive surfaces 6 and 7 in advance, the septic tank can be manufactured easily and safely.

なお、上述したコロナ処理の代わりに、接着面６、７をあらかじめイトロ処理又はフレーム処理するようにしてもよい。   Note that instead of the above-described corona treatment, the adhesive surfaces 6 and 7 may be subjected to an intro treatment or a frame treatment in advance.

ここでイトロ処理とは、特許４４０８８７９号公報に記載されているように、フレームバーナーによる酸化炎を介して接着面６、７の表面にナノレベルの酸化ケイ素膜を形成する表面改質方法である。   Here, the itro treatment is a surface modification method in which a nano-level silicon oxide film is formed on the surfaces of the adhesion surfaces 6 and 7 through an oxidation flame by a frame burner as described in Japanese Patent No. 4408879. .

また、フレーム処理とは、接着面６、７にフレームプラズマを照射して、表面に極性基を生成する表面改質方法である。   The flame treatment is a surface modification method in which the adhesion surfaces 6 and 7 are irradiated with flame plasma to generate polar groups on the surface.

これらの表面改質処理をあらかじめ接着面６、７に対して行うことにより、接着面とプライマーや接着剤との親和性が高くなるので、コロナ処理の場合と同等の効果を奏することができる。   By performing these surface modification treatments on the adhesive surfaces 6 and 7 in advance, the affinity between the adhesive surface and the primer or adhesive is increased, so that the same effect as in the case of corona treatment can be achieved.

なお、上記の実施形態は上下別々に製造された部品を接着するようにしているが、左右別々に製造された部品を接着する場合にも適用できることは言うまでもない。   In addition, although said embodiment adhere | attaches the components manufactured separately on the upper and lower sides, it cannot be overemphasized that it is applicable also when adhering the components manufactured separately on right and left.

１ 槽本体
２ 流入管
３ マンホール口
４ 上槽
５ 下槽
６、７ 接着面 1 Tank body 2 Inflow pipe 3 Manhole port 4 Upper tank 5 Lower tank 6, 7 Bonding surface

Claims (2)

ＳＭＣ法により繊維強化樹脂製の部品を複数成形し、前記部品の接着面にイソシアネート系のプライマーを塗布した後に乾燥させ、前記乾燥したプライマーの上からウレタン樹脂系の接着剤を塗布し、前記接着剤が塗布された接着面を介して前記複数の部品同士を接着固定する工程を有する浄化槽の製造方法において、
前記部品の接着面を、コロナ処理、イトロ処理又はフレーム処理した後に、前記イソシアネート系のプライマーを塗布することを特徴とする浄化槽の製造方法。 A plurality of fiber reinforced resin parts are molded by the SMC method, an isocyanate primer is applied to the adhesive surface of the part, and then dried, and a urethane resin adhesive is applied on the dried primer, and the adhesion is performed. In the manufacturing method of the septic tank which has the process of adhering and fixing the plurality of parts through the adhesive surface to which the agent is applied,
A method for producing a septic tank, wherein the isocyanate primer is applied after corona treatment, itro treatment or flame treatment is applied to the adhesive surface of the component. 前記繊維強化樹脂が、ガラス繊維に不飽和ポリエステル樹脂を含浸してなるものである請求項１に記載の浄化槽の製造方法。   The method for producing a septic tank according to claim 1, wherein the fiber reinforced resin is obtained by impregnating a glass fiber with an unsaturated polyester resin.
JP2010155934A 2010-07-08 2010-07-08 Septic tank manufacturing method Expired - Fee Related JP5617391B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014065017A (en) * 2012-09-27 2014-04-17 Daiei Sangyo Kk Septic tank
JP2017039234A (en) * 2015-08-18 2017-02-23 トヨタ自動車株式会社 Joined body, method for manufacturing joined body, and structure for vehicle
CN111620263A (en) * 2020-06-22 2020-09-04 合肥米弘智能科技有限公司 Environment-friendly glass fiber reinforced plastic septic tank transfer system and septic tank transfer process
CN113119477A (en) * 2021-03-22 2021-07-16 劲旅环境科技股份有限公司 Welding tool and welding method thereof

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014065017A (en) * 2012-09-27 2014-04-17 Daiei Sangyo Kk Septic tank
JP2017039234A (en) * 2015-08-18 2017-02-23 トヨタ自動車株式会社 Joined body, method for manufacturing joined body, and structure for vehicle
CN111620263A (en) * 2020-06-22 2020-09-04 合肥米弘智能科技有限公司 Environment-friendly glass fiber reinforced plastic septic tank transfer system and septic tank transfer process
CN113119477A (en) * 2021-03-22 2021-07-16 劲旅环境科技股份有限公司 Welding tool and welding method thereof

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