知搜-全球专利检索

  1. 登录
  2. 注册
发明公开
CN109676885A 塑胶前壳、液晶电视和塑胶前壳的制造方法 无效 - 驳回

塑胶前壳、液晶电视和塑胶前壳的制造方法
摘要：
本发明公开了一种塑胶前壳、液晶电视和塑胶前壳的制造方法，其中所述塑胶前壳包括以下重量份的原料：30～50重量份的聚碳酸酯；30～50重量份的ABS；10～20重量份的滑石粉。所述塑胶前壳的制造方法，包括以下步骤：步骤一、将30～50重量份的聚碳酸酯、30～50重量份的ABS和10～20重量份的滑石粉混合，得到复合材料，对注塑系统和注塑模具进行预处理，将所述复合材料干燥后加入到注塑系统内，使所述复合材料完全熔融；步骤二、将已合模的模具定模表面温度加热至125～140℃，并将熔融状态的所述复合材料分段注射到所述模具的型腔内并保压；步骤三、冷却成型20～30s，取出所述模具中的产品。所述复合材料在熔融填充的过程中对模块的损伤程度较小，能有效解决面壳模具拖伤的问题。
摘要（英）：

The invention discloses a plastic front case, an LCD TV and a manufacturing method for plastic front case. Specifically, the plastic front case is prepared from, by weight, 30-50 parts of polycarbonate, 30-50 parts of ABS, and 10-20 parts of talcum powder. The method includes the steps that (1), the 30-50 parts of polycarbonate, the 30-50 parts of ABS, and the 10-20 parts of talcum powder are mixed to obtain a composite material, an injection molding system and an injecting mold are pre-treated, and the composite material is added into the injecting system after drying and then fully melted; (2), the surface of a fixed half of a molded mold-set is heated to be at the temperature of 125 DEG C to 140 DEG C, and the composite material staying in molten status is injected into the shaping cavity of the mold at constant pressure; and (3), the product is taken out from the mold after cooling and shaping for 20 to 30 seconds. Damage to the molding block is small in the process of the meltingand filling of the composite material, and thus the problem of damage to the case face caused by dragging is solved effectively.

0/0