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Common Quality Issues of Two-color Mold Injection Molding Parts

The dual color injection mold technology is widely used in various fields due to its unique advantages, such as flexible design, high production efficiency, and stable product quality. However, like any manufacturing process, injection molded two-color mold products also face some common quality issues. This article will reveal these questions for you

1,Common quality issues with two-color mold products

1. Deformation

Deformation is one of the common problems in two-color mold products. This may be due to the large temperature difference between the front and rear molds, insufficient grip force of the rear mold, or strong adhesion of the front mold. Finished product deformation not only affects aesthetics, but may also affect the functionality and service life of the product.

2.Overflow glue

Overflow is another common problem, mainly manifested as excess resin overflowing from the mold during the mold opening process. This may be due to insufficient preloading, poor molding conditions, or improper material selection. Excessive glue not only affects the appearance quality of the product, but may also cause damage to the mold.

3.Cracking

Cracking is one of the more serious problems in injection molded two-color mold products. It may be caused by material shrinkage, improper temperature control, unreasonable filling speed and pressure settings, and other reasons. Cracked products not only lose their practical value, but may also pose safety hazards to users.

4.Different color points

Heterochromatic dots refer to impurities that appear on the surface of a product that are different from its natural color. This may be due to impure raw materials, mixed impurities, or mold contamination. The presence of color spots seriously affects the appearance quality of products and reduces their market competitiveness.

5.Collapse pit

Pit collapse is caused by local surface subsidence of the product due to material shrinkage. This may be due to improper molding conditions, unreasonable mold design, or inappropriate material selection. Collapse not only affects the appearance quality of the product, but may also affect its performance.