防伪瓶盖注射模设计阿城继电器厂（黑龙江阿城１５０３０２）王伟成赵国君王艳华１塑件结构分析防伪瓶盖具体结构如图１所示，选用ＰＰ料注射成型，外表面要求光洁、平整。由于内表面有螺纹，而且下端有一圈牙型与瓶盖小面积接触，只能旋入，若旋出则与上部脱离，起防伪作... Anti-counterfeiting caps injection mold design Acheng Relay Factory (Acheng 150302, Heilongjiang) Wang Weicheng Zhao Guojun Wang Yanhua 1 plastic structure analysis The specific structure of anti-counterfeiting cap shown in Figure 1, the choice of injection molding PP material, the outer surface requires smooth, smooth . As the inner surface of the thread, and the lower end of a ring with a small tooth-cap contact area, can only be screwed in, if the screw out of the upper part of the ...