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    • 8. 发明授权
    • Co-injection moulding
    • 共注塑
    • US09205582B2
    • 2015-12-08
    • US13634512
    • 2011-03-14
    • Geoffrey YorkEsak Shabudin
    • Geoffrey YorkEsak Shabudin
    • B29C45/16B29C45/00B65D85/804B29C33/42
    • B29C45/0046B29C33/42B29C45/1603B29C45/164B29C45/1642B29C2045/1614B29C2045/1648B29K2101/12B29K2995/0067B29L2031/7132B65D85/8043B65D85/8046
    • The present invention relates to advancements in injection molding and in particular to a method and apparatus for co-injection molding articles of complex non symmetrical geometry. The method forms a multilayer injection molded article comprising an outer skin of a first material and a central core of a second material which is encapsulated by the outer skin. The first and second materials are injected in a single stream into a cavity of an injection mold, with the second material encased within the first material. The flow of the stream is controlled by means of flow paths within the mold cavity such that both the first and second materials are present in at least one first area of the mold cavity and that only the first material is present in at least one second area of the mold cavity. The flow paths include at least one primary flow path in the first mold cavity area which divides into at least two secondary flow paths. The resistance of a first of the secondary flow paths in the at least one first mold cavity area is reduced relative to that of a second of the two secondary flow paths, which is in the at least the second mold cavity area.
    • 本发明涉及注射成型的进展,特别涉及用于共注射成型复杂非对称几何形状的制品的方法和装置。 该方法形成多层注射成型制品,其包括第一材料的外皮和由外皮包封的第二材料的中心芯。 将第一和第二材料以单一流注射到注射模具的空腔中,其中第二材料包封在第一材料内。 流的流动通过模腔内的流动路径来控制,使得第一和第二材料都存在于模腔的至少一个第一区域中,并且仅第一材料存在于至少一个第二区域 的模腔。 流动路径包括在第一模腔区域中的至少一个主流动路径,其分成至少两个二次流动路径。 至少一个第一模腔区域中的第一二次流路的阻力相对于位于至少第二模腔区域中的两个二次流路中的第二流路的阻力减小。