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    • 5. 发明授权
    • Process for injection molding objects having at least two different
layers
    • 具有至少两个不同层的注射成型物体的方法
    • US5656215A
    • 1997-08-12
    • US425109
    • 1995-04-20
    • Helmut EckardtHermann PlankHarald Bleier
    • Helmut EckardtHermann PlankHarald Bleier
    • B29C37/00B29C45/14B29C45/16B29C45/17
    • B29C45/1704B29C37/0032B29C45/14778B29C45/1642B29C2037/0035B29C2045/1715B29C45/1635B29K2101/10Y10S425/812
    • A process for the injection molding of objects having an outer layer of enamel and an inter layer of a plastic material is disclosed. According to the process, a liquid enamel is used. This enamel is injected by an enamel-injection apparatus through an enamel-injection die. A plastic melt passes through an injection unit into the cavity. According to the invention, the liquid enamel is injected into the flow path of the melt in the region before the cavity, before the melt is injected, so that the melt is encased by enamel before it is distributed in the cavity. Variations are also disclosed. For example, the form can be filled with enamel and the excess enamel drained. Then, the melted plastic material is introduced into the injection molding form. Also, the form can filled and then the capacity of the form increased to accommodate the melted plastic material. In any case, it is possible to use liquid enamels to enamel injection molded parts in the tool or form. Furthermore, the inventive process makes possible a rapid and therefore economical mode of operation.
    • 公开了一种用于注射成型具有釉质外层和塑料材料层的物体的方法。 根据该方法,使用液体搪瓷。 该釉质通过搪瓷注射装置通过搪瓷注射模具注射。 塑料熔体通过注射单元进入空腔。 根据本发明,在注射熔体之前,将液体搪瓷注入到腔体之前的区域内的熔体的流动路径中,使得熔体在其被分配在空腔中之前被搪瓷包住。 还公开了变化。 例如,表面可以填充珐琅质并排出多余的珐琅质。 然后,将熔融的塑料材料引入注射成型形式。 此外,可以填充形式,然后增加形式的容量以适应熔融的塑料材料。 在任何情况下,可以使用液体搪瓷以工具或形式搪瓷注塑部件。 此外,本发明的方法使得可以快速且因此经济的操作模式。