TPE not only has the high elasticity of vulcanized rubber, aging resistance, oil resistance and other excellent properties, but also has the characteristics of ordinary plastics processing convenience, processing methods are widely available, it can be produced through the injection molding, extrusion and other processing methods.TPE raw materials in the injection molding process there will be a variety of defects in the process, then we should be how to avoid these defects it?

Avoid TPE raw materials in the injection molding process to form defects in the following ways:

1. mold opening speed is too fast, due to large deformation of drawing, should slow down the mold opening speed.

2. the mechanical properties of the product is significantly reduced, the appearance of poor quality. The aging phenomenon can be suppressed to a certain extent by cooperating with heat-resistant and weather-resistant stabilizers and adding ultraviolet absorber and light stabilizer.

3. Choose suitable mold release agents and lubricants and apply them appropriately to avoid the appearance of silver wire on the product surface due to improper use.

4. the injection pressure should be appropriately reduced and the size of runners and gates should be increased to avoid excessive injection pressure and small runners and gates, which will produce silver wires when the material passes through due to excessive shear force.

5. When forming thick-walled products with high-viscosity materials, surface wrinkling defects generally occur at the end of the runner. For this defect, the solution is to increase the melt temperature and injection speed.

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