(1)成型制品塑料制品的形状是由模具中与塑料接触的所有模块迭合一起形成的。一般塑料制品的形状分为以下三种情况之一或是它们的结合：普通实用形状;艺术形状;工程(功能)形状。模具设计人员必须明白，塑料制品的设计者不一定熟悉模具制造和模塑过程的复杂情况。制品设计方面的某些简单要求可能会造成模具制造和模塑中的困难，通常，制品结构上的微小改变，会大大地简化模具或改善模塑状况。
(1) the shape of the plastic products of the molded products is formed by the superposition of all modules in the mold which contact with the plastic. The shape of general plastic products can be divided into one of the following three situations or their combination: general practical shape; artistic shape; Engineering (functional) shape. Mold designers must understand that plastic product designers are not necessarily familiar with the complexity of mold manufacturing and molding processes. Some simple requirements in product design may cause difficulties in mold manufacturing and molding. Usually, small changes in product structure will greatly simplify the mold or improve the molding condition.
(2)塑料从注射机到型腔的输送以下的讨论适合于整个浇注系统，根据塑料熔体在浇注系统中的状态，分成冷流道和热流道系统两大类。
(2) the following discussion about the transportation of plastic from the injection machine to the mold cavity is suitable for the whole pouring system. According to the status of plastic melt in the pouring system, it can be divided into two categories: cold runner system and hot runner system.