To shorten a molding time by a thermoplastic resin.SOLUTION: A method for producing a hollow resin molding includes: an arrangement step of arranging a molded cover C in a shape corresponding to the mold of a mold 12 inside of the mold 12; an introduction step of introducing a plurality of parisons (thermoplastic resins) that can be fused to the cover C so as to face the cover C, into the mold 12; a molding step of blowing air into the inside of the parison, and bringing the parison into contact with the cover C to fuse the parison to the cover C; and a cooling step of cooling and curing the cover C and the parison in a state in which the mold 12 is closed, in the arrangement step, in the cover C, at least a part of the periphery in a portion where the parisons overlap each other, a portion exists in which the parisons are exposed so as to be brought into direct contact with the mold 12.SELECTED DRAWING: Figure 3
【課題】熱可塑性樹脂による成形時間を短縮することを課題とする。【解決手段】金型12の内部に、金型12の型に対応する形状に成形済みのカバーCを配置する配置工程と、カバーCと対向するように、カバーCと溶着可能なパリソン(熱可塑性樹脂)が、金型12内に複数導入される導入工程と、パリソンの内部にエアを吹き込み、パリソンとカバーCとを接触させることで、パリソンとカバーCとを融着する成形工程と、金型12が閉じられた状態でカバーC及びパリソンを冷却硬化させる冷却工程と、を有し、配置工程において、カバーCは、パリソンが重なり合う箇所の少なくとも一部の周囲において、パリソンが金型12に直接接触するよう露出している部分が存在することを特徴とする。【選択図】図3
METHOD FOR PRODUCING HOLLOW RESIN MOLDING AND FUEL TANK
中空の樹脂成形体の製造方法及び燃料タンク
2019-08-22
Patent
Electronic Resource
Japanese
PROCESS FOR PRODUCING HOLLOW RESIN-MOLDED ARTICLE, AND FUEL TANK
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