Because of the diversity and complexity of plastic products of plastic parts used, different design procedures can be used without stopping as follows:
  1.before the design of plastic parts, plastic parts to understand in detail the functions, environmental conditions, load conditions, to understand the impact of each component and the link between the plastic parts function. Plastic parts function as accurately and in detail, limiting factors to design more comprehensive consideration of plastic parts, plastic parts design can better meet the requirements.
  2.for some special properties of plastic parts should have, such as optical transparency, heat resistance, flame resistance, impact resistance, corrosion resistance, should understand clearly, which can narrow the range of material selection.
  3.Many of the plastic varieties, properties of different varieties of plastic, should be determined according to the use of plastic parts and cost requirements and plastic properties. When the choice must be carefully understood, comprehensive measure. And the performance of the plastic piece functional requirements related to: hardness, impact strength, bending strength, chemical resistance, weather resistance, elongation, thermal bending degree, electrical properties, yield and damage is tensile strength etc.. Design and engineering related performance: the proportional limit, fatigue, fracture stress, Poisson's ratio, thermal expansion coefficient, friction factor, die shrinkage rate.
  4.making the preliminary design scheme, mainly from the load considering plastic parts of the shape, size, wall thickness, rib and the position of the hole, in addition, also need to consider the design and manufacture of plastic parts in injection molding, mold problems, after comprehensive consideration of these issues, may make the preliminary design of the product, then according to this design, sketch drawing products.
  5.sample. According to the requirement of preliminary design, mold design and processing, according to the varieties of plastic and forming method of the selected manufacturing plastic samples, also can use other simple manufacturing method of sample.
  6.sample test. The samples were all kinds of simulation test and practical test conditions, manufacturing and test samples tend to be performed many times. If the preliminary design with several design schemes, for this several schemes by testing samples, in order to achieve the optimal scheme
  7.drawing regular product pattern. On the basis of experiments, considering the performance, plastic products, technology and economy, in order to select the best design products, plastic products design, drawing regular pattern, the pattern must be indicated on the plastic brand.
  8.preparation of all technical documents, including plastic product design specifications and technical conditions.