With the help of injection molds to produce some parts or objects, part of the product shape, quality unqualified situation, which is often a class of problems in the injection molding production process. So what factors may lead to injection molding finished product is not very good? Below to come together on the causal factors to understand the problem.

Injection molding finished product shape or quality defects, may be related to the following factors:

1, physical factors.

After injection molding of the finished product of its internal air bubbles exist, more than that with the mold inside the air into the mold cavity melt related. In addition, the barrel itself exists within the water vapor or bubbles, etc., may also enter the finished product at any time, inducing cost quality defects.

Most of the injection molded products in the early stages of production, will first form a layer of hard shell, and then according to the cooling of the mold to carry out the later injection molding. For some of the thicker wall area parts, its parts will have a strong adhesion for a long time, while the outer skin has a relatively strong resistance to shrinkage. The result is that the internal melt is constantly pulled outward, while the cost of the internal gap.

2, abnormal processing parameters.

Keep the pressure too low, too short a time or mold wall temperature is too low, etc., may also induce the emergence of abnormal finished products.

Injection molding is actually one of the more commonly used in many mold processing, compared to the general molds, which can produce more types of product forms, to better meet the requirements of different manufacturers for the shape of the finished product. Therefore, for a producer or manufacturer, in the purchase of injection mold before, to understand more about its production products, to see whether it can meet their own requirements.