The selection of plastic parts mainly depends on the type of plastic, such as (thermoplastic or thermosetting), the initial shape and the shape and specification of the product. Generally, pressing die and transfer molding are used to make injection molded parts, and injection molding can also be used. Laminations, dies, and thermoforming enable plastics to form on a flat surface. The above methods can be processed with rubber. In addition, there are also castings with liquid enterprises or polymers as raw materials. Among these methods, extrusion and injection molding are the most common and basic molding methods

The manufacturer of precision plastic injection molding introduces the reasons for the deformation of injection molded parts:

1. The bending is caused by the excessive internal stress of the injection molded part

2, mold filling is moderate and slow

3, the plastic in the mold core is insufficient

4. The plastic temperature is too low or inconsistent

5. The injection molded part is overheated when ejecting

6. Insufficient cooling, actuation and inconsistent mold temperature

7, the structure of the injection molded part is unqualified

Remedies for plastic injection molding manufacturers:

1. Reduce injection pressure

2. Lower the lead screw forward time

3. Lifting cycle (especially cooling time). When the warm water (38 ° C) is never immediately invaded from the inside of the mold (especially the thicker injection parts), the injection parts slowly cool down

4. Increase injection rate

5. Raise the plastic temperature

6. Use cooling equipment

7. Properly increase the cooling time or improve the cooling conditions to ensure that the dynamic and fixed mold temperatures are consistent as far as possible

8. Improve the structure of plastic parts according to the actual situation when production allows