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    METHOD FOR MANUFACTURING FOAMABLE INJECTION MOLDING AND INJECTION DEVICE THEREFOR
    1.
    发明公开
    METHOD FOR MANUFACTURING FOAMABLE INJECTION MOLDING AND INJECTION DEVICE THEREFOR 审中-公开
    制造可发泡注射成型和注射装置的方法

    公开(公告)号：EP2962829A1

    公开(公告)日：2016-01-06

    申请号：EP14756937.0

    申请日：2014-02-20

    申请人： Toyo Seikan Group Holdings, Ltd. ,  Toshiba Machine Engineering Co. Ltd.

    发明人： NAKATANI, Toyohiko ,  ICHIKAWA, Kentarou ,  TANAKA, Hideo ,  SATO, Kazuhito ,  LEVI, Kishbaugh

    IPC分类号： B29C45/00 ,  B29C45/54 ,  B29K105/04

    摘要： A plasticizing process in which a molten resin that has been plasticized and dissolved in a foaming gas is sent to the front end side of a heating cylinder 20 by means of a screw 21 that rotates in a heating cylinder 20, and the screw 21 retreats according as the molten resin accumulates in the front end side of the heating cylinder 20; a transfer process in which the screw 21 is advanced with rotating and transfers the molten resin accumulated in the front end side of the heating cylinder 20 from a plasticizing unit 2 to an injection unit 3, and an injection process in which the molten resin is injected from the injection unit 3 are conducted and repeated to produce a foamable injection molded product. By this method, in injection molding of a foamable injection molded product dissolved in a foaming gas such as an inert gas, plasticization of a raw material resin and impregnation of a plasticized molten resin with a foaming gas in a molding cycle can be improved, whereby productivity can be improved.

    摘要翻译： 通过在加热缸20内旋转的螺杆21将在发泡气体中塑化溶解的熔融树脂送入加热缸20的前端侧的塑化工序，螺杆21按照 当熔融树脂积聚在加热缸20的前端侧时， 转动过程，其中螺杆21随着旋转而前进，并且将积聚在加热缸20的前端侧的熔融树脂从塑化单元2转移到注入单元3;以及注入过程，其中注入熔融树脂 从注射单元3引导并重复以生产可发泡注射成型产品。 通过该方法，在注射成型溶解在惰性气体等发泡气体中的发泡性注塑成型品的情况下，能够提高原料树脂的塑化和成型周期中发泡气体对增塑熔融树脂的含浸， 生产力可以得到提高。