Mold design is a start of success molding processing; an optimum mold design is aim for the best molding performance.

To achieve a good mold design, you need to take elements into consideration as below:

• The most optimum mold cavities layout.
• Proper mold base size and guiding way.
• Provide reasonable injection mold flow and filling performance.
• Use reasonable shrinkage factors ,especially parts in long length).
• Study the part design in 2D, the tolerance required determine the way you design and machine it greatly.
• Adequate cooling layout.
• Proper ejection distance, de-molding way.
• Minimum injection molding cycle time and as less as possible secondary works such as de-gating, drilling.
• Appropriate gating location, welding line position accepted by the customer.
• Minimum clamp force requirements, as less as possible injection pressure requirements. (the injection molding machine required smaller, the injection molding cost lower)
• Adequate venting as well as reliable sealing to avoid flash occurs.
• Minimum scrap rate (most important factor to influence the real cost of injection molding process).
• Proper selected steel and heat treatment, just fit the demands of the customer ( otherwise it would be called “over-designed”).
• Watch out the particular features such as sliders, lifters, make sure all the mechanisms designed perform well
• Study the part design in 2D, the tolerance required determine the way you design and machine it greatly
• Minimum clamp force requirements, as less as possible injection pressure requirements. (the injection molding machine required smaller, the injection molding cost lower).

A lot of defects occur frequently can be minimized by good mold design:

• Flash
• Sink mark
• Surface defects
• Short-shot
• Unbalance filling
• Many other common defects

A good mold design can reduce the manufacturing cost as well as shorten the delivery time, it also increases mold quality, productivity and provides best performance stability.