What is the reason for the insufficient strength of the products produced by injection molding?

In the injection molding production, what is the reason for the insufficient strength of the products produced? Let’s take a look!

1. If the temperature of the material is too high, overheating of the melt will cause decomposition and brittleness, and proper cooling is required.plastic injection molding,

2. When the temperature is too low, it will cause poor plasticization. Increase the temperature and high pressure of the material to improve the quality of plasticization

3. When the mold temperature is too low or the plastic is not sufficiently dried, it is necessary to increase the mold temperature to fully dry the plastic.

4. If the amount of release agent is too much, the strength of the plastic will be insufficient to a certain extent, so control the use of release agent or not use release agent as much as possible.

5. When the rubber part is too thin locally, it is necessary to increase the thin wall thickness or increase the reinforcing rib.

6. The use of nozzle material will affect the strength of the produced product to a certain extent. Therefore, the use of nozzle material must be reduced or the nozzle material must not be used as much as possible.

7. If the nozzle aperture or gate size is too small, it will also affect the strength of the product. Therefore, it is necessary to increase the nozzle aperture or increase the gate size.

8. In the injection molding of glass fiber reinforced plastics, if the gate is too small, the gate size must be increased to prevent the glass fiber from being shortened due to shearing.

 

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