Contact Us
What is Precision Injection Molding

What is Precision Injection Molding

Precision injection moulding refers to an injection moulding method that the dimension repetition accuracy of injection moulded products is very high so that it is difficult to meet the requirements by using general injection moulding machine and conventional injection moulding process.


The concept of precision injection moulding is mainly different from conventional injection moulding. It is based on the rapid development of polymer materials. In the field of instrumentation and electronics, precision plastic parts are used instead of high precision metal parts.


At present, there are two defining indexes for precision injection products, one is the repeat precision of product size, the other is the repeat precision of product quality.

Due to the different nature and processing technology of various materials, the precision of plastic parts can not be equated with that of metal parts.


Precision injection moulding is a comprehensive technology involving raw material performance, formulation, moulding technology, and equipment.


Precision plastic products produced by precision molding companies include DVD digital compact disc, DVD laser head, digital camera parts, computer connectors, light guide plate, aspheric lens, and other precision products. The remarkable characteristics of these products are not only high dimensional accuracy requirements but also high internal quality and product rate requirements.


The mould of the forming product is an important condition to decide whether the product produced by the precision molding company can meet the design requirements of dimensional tolerance. The precision injection machine is the key equipment to ensure that the product is always formed within the required tolerance range and to ensure a very high yield. The highest precision level of plastic products is three grades.


Related News
  • Plastic Injection Mould Runner & Gate Design

    Plastic Injection Mould Runner & Gate Design

    September 23, 2019Design principles for the runner system:1. For the single plastic part and multiple cavities, the balanced runner (except special) should be used, that is, the position of each cavity gate and the siz...view
  • Injection Mold Building Process

    Injection Mold Building Process

    October 28, 20191. Process analysis of plastic products.Before the die design, the designer should fully analyze whether plastic products conform to the principle of injection molding. It is necessary to consult with...view
  • Manufacturing of Dies for Automobile Covering Parts in China

    Manufacturing of Dies for Automobile Covering Parts in China

    October 28, 2019Manufacturing technology of automobile panel die is becoming more and more mature in China, which has changed from extensive development mode mainly relying on scale expansion and quantity increase in...view
  • Injection Moulding Method

    Injection Moulding Method

    April 21, 20201. The vented injection machine used for degassing injection moulding is equipped with an exhaust port in the middle of the barrel, which is also connected to the vacuum system. When the plastic is pl...view
  • How Plastic Injection Works

    How Plastic Injection Works

    April 21, 2020Plastic injection is a method in which a thermoplastic or thermosetting moulding compound is first uniformly plasticized in a heating barrel, and then pushed into the cavity of closed mould by a plung...view
  • Matters Needing Attention During Mold Trial

    Matters Needing Attention During Mold Trial

    April 21, 2020The engineer in charge needs to prepare DFM to check the mold structure in detail. If there is any doubt, it needs to be clarified on the spot. If there is something wrong, it needs to be recorded and...view
Plastic Injection Moulds
Plastic Parts Gallery