PROBLEM TO BE SOLVED: To provide a method for producing a resin fuel tank easily controlling wall thickness of a tank wall part, suppressing a swelling amount due to fuel of a resin layer composing the tank wall part, and also having good welding quality.SOLUTION: Inside resin layers 62A, 62B and outside resin layers 66A, 66B are subjected to injection molding on the insides and the outsides of films 60A, 60B having fuel permeation resistant barrier layers. The expensive barrier layers are formed with films 60A, 60B to make them thin, and thereby are reduced in production cost of the fuel tank. Also, the outside resin layers 66A, 66B are formed so as to make the inside resin layers 62A, 62B thin and thereby a swelling amount due to fuel can be suppressed. Further, the inside resin layers 62A, 62B are formed and thereby welding quality of junction parts 64A, 64B becomes higher.SELECTED DRAWING: Figure 12

    【課題】タンク壁部の肉厚の制御が容易で、タンク壁部を構成する樹脂層の燃料による膨潤量を抑制すると共に、溶着品質が良好な樹脂製燃料タンクの製造方法を提供する。【解決手段】耐燃料透過性のバリア層を有するフィルム60A、60Bの内側と外側にそれぞれ内側樹脂層62A、62B、外側樹脂層66A、66Bを射出成形している。高価なバリア層をフィルム60A、60Bで供給しているため薄くでき、燃料タンクの製造コストを低減することができる。また、外側樹脂層66A、66Bを設けたため、内側樹脂層62A、62Bを薄くすることができ、燃料による膨潤量を抑制することができる。さらに内側樹脂層62A、62Bが形成されているため、接合部64A、64Bの溶着品質が良好となる。【選択図】図12


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    Title :

    METHOD FOR PRODUCING RESIN FUEL TANK


    Additional title:

    樹脂製燃料タンクの製造方法


    Contributors:

    Publication date :

    2017-02-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF



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