ISO 294-1:2017规定了热塑性材料注射成型试样时应遵循的一般原则，并给出了制备两种用于获取参考数据的试样的模具设计细节，即ISO 20753中规定的A1型和B1型试样，并为建立可再现的成型条件提供了依据。其目的是对模塑过程的主要参数提供一致的描述，并在报告模塑条件时建立统一的实践。 试样可复制制备所需的特殊条件因使用的每种材料而异，并在相关材料的国际标准中给出，或由相关方商定。 注:丙烯腈/丁二烯/苯乙烯（ABS）、苯乙烯/丁二烯（SB）和聚甲基丙烯酸甲酯（PMMA）的实验室间试验表明，模具设计是试样可重复制备的一个重要因素。

ISO 294-1:2017 specifies the general principles to be followed when injection moulding test specimens of thermoplastic materials and gives details of mould designs for preparing two types of specimen for use in acquiring reference data, i.e. type A1 and type B1 test specimens as specified in ISO 20753, and provides a basis for establishing reproducible moulding conditions. Its purpose is to provide consistent descriptions of the main parameters of the moulding process and to establish a uniform practice in reporting moulding conditions. The particular conditions required for the reproducible preparation of test specimens will vary for each material used and are given in the International Standard for the relevant material or are to be agreed upon between the interested parties. NOTE Interlaboratory tests with acrylonitrile/butadiene/styrene (ABS), styrene/butadiene (SB) and poly(methyl methacrylate) (PMMA) have shown that mould design is an important factor in the reproducible preparation of test specimens.