Weld Mark Problems and Solutions in Game Controller Injection Molds

In the injection molding production process of game controllers, weld marks are a common defect, usually caused by convection generated by the plastic during the flow process. This weld mark is formed when the front part of the molten resin from different directions cools down and fails to completely fuse at the joint. Although weld marks mainly affect the appearance and may have a negative impact on painting and electroplating, in some cases, especially when fiber-reinforced resins are used, it may seriously affect the strength of the product.

Improvement measures

To solve the weld mark problem, the following measures can be considered:

1. Adjust molding conditions: By increasing the resin temperature, mold temperature, injection pressure and speed, the fluidity of the resin can be improved, thereby reducing the occurrence of weld marks.

2. Add venting grooves: Setting venting grooves or ejection rods in places where weld marks are easy to form can help gas discharge and improve resin flow and bonding quality.

3. Reduce the use of release agents: Minimizing the use of release agents can improve the fluidity of the resin in the mold and help reduce the risk of weld marks.

4. Set process flash: By setting process flash, use it as the location of weld mark generation, cut it off and remove it after molding, so as to eliminate defects.

5. Position adjustment and surface treatment: If the weld mark only affects the appearance, you can try to change the injection gate position to change the location of the weld mark. At the same time, treat the weld mark area to a dark glossy surface, etc., and modify it to improve the appearance.

As a Game controller injection molding manufacturer, understanding and effectively dealing with the problem of weld marks is crucial to ensure the appearance and performance of the product. By optimizing the process and design, we can improve the quality of the final product.