Most of industrial shaped plastic parts are made by moulding production. Before injection molding production, we need to do a lot of preparation work to ensure that injection molding production could be successful and smoothly.

One: Preparation of plastic materials

1: Confirm the plastic material number/type according to the product drawing or customers’ requirements and place order to material suppliers in order to get the resin timely before production time;

2: If you need to use color master-batch or toner, you need to confirm the color master-batch or toner number and mixing ratio too;

3: Confirm the drying temperature and drying time of the plastic material according to the material properties and product requirements and dry the material with enough time.

4: Confirm again whether the material in the barrel is correct or not before start-up;

Two: Plastic injection mold preparation

1: Confirm the project number of the plastic injection mold and move it to production waiting area in factory;

2: Check whether the plastic injection mold has special structures needing paying more attention on, such as inserts, cores, sliders and so on;

3: Check whether the location ring, hot runner fitting and the appearance of the mold cavity & core inserts (no rust, no damage and so on); 

4: Check the diameter and length of the water pipe, clamping plate, the length of the clamping plate bolt and other related components.

5: Check whether the nozzle of the mold matches the nozzle of the machine or not.

Three: Preparation of injection molding machine

 1: Check if the plastic injection mold can be correctly installed on the injection molding machine. The checking points includes the maximum clamping force of the machine, the size of the mold, the thickness of the mold, the sliding function and blow device, etc.;

2: Whether the ejector bar of the injection molding machine match the mold;

3: Check if the injection machine’s screw has been cleaned or not;

4: Check the mold temperature machine, mechanical arm, automatic mixer, and automatic suction machine to see if they can work well as normal and check whether the technical arm is designed to match this mold for injection molding production;

5: Check and confirm the product drawings / approved samples produced and understand important dimensions to make sure the moulded products are correct;

6: Preparation of other related tools for injection molding.