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    • 5. 发明授权
    • Method of forming synthetic resin formed articles
    • 形成合成树脂成型制品的方法
    • US5972278A
    • 1999-10-26
    • US19335
    • 1993-02-18
    • Keizo ItoTakashi KatoShoji SakaidaHikaru Ando
    • Keizo ItoTakashi KatoShoji SakaidaHikaru Ando
    • B29C31/04B29C43/18B29C51/00B29C51/08B29C70/68B29C70/78B29C45/14B29C51/10
    • B29C43/183B29C70/683B29C70/78B29C2791/006B29C2791/007B29C2793/00B29C31/04B29C51/00B29C51/082
    • A method of forming a synthetic resin formed article having a double-layer structure of a base portion and a covering portion which covers an outer periphery of the base portion and which has an inwardly curved portion for covering an end portion of the base portion. The method includes the steps of forming a sheet-like material into a predetermined shape by the vacuum forming to obtain a preliminary covering portion; trimming an end portion of the preliminary covering portion obtained in the previous step to obtain the covering portion of the formed article; setting the covering portion of the formed article on one of a pair of dies which constitute a press-type forming die with the curved portion of the covering portion being supported by a slide core located at a forefront position; setting a molten resin which is forming material of the base portion into a gap between the one die and the other die in a state in which the covering portion of the formed article is being set on the one die; clamping the press-type forming die in a state wherein the slide core is in contact with the other die at the forefront position immediately after or in synchronism with the molten resin setting step and causing the molten resin to set to form it; and opening the forming die and then removing the formed article obtained in the clamping step from the press-type forming die.
    • 一种形成具有基部的双层结构的合成树脂成形体的方法和覆盖基部的外周的覆盖部,并且具有用于覆盖基部的端部的向内弯曲部的方法。 该方法包括以下步骤:通过真空成型形成预定形状的片状材料以获得初步覆盖部分; 修剪前一步骤中获得的预备覆盖部分的端部以获得成形制品的覆盖部分; 将成形品的覆盖部分设置在构成压制成形模的一对模具中的一个上,其中覆盖部分的弯曲部分由位于最前位置的滑动芯支撑; 将形成所述成形体的覆盖部的状态下的将所述基部的材料形成的熔融树脂设定在所述一个模具和所述另一个模具的间隙中; 夹紧压制成型模具,其中在与熔融树脂固化步骤之后或与熔融树脂固化步骤同步的情况下,滑芯在最前位置处与另一个模具接触并使熔融树脂形成; 并打开成型模具,然后从压制成型模具中取出在夹紧步骤中获得的成型制品。