Designing a high-quality injection molded part requires a coordinated effort between mold designers, part designer, and process engineers. The first step is to optimize the part design for molding. Wall thickness and packing pressure are the focus of this lesson.
Nominal wall thickness of a part is an important part design criterion for achieving uniform process behavior, from filling to packing to cooling. Wall thickness, polymer materials, and process are all inter-connected and each aspect should be understood to achieve the highest part quality possible.
This lesson reviews how to evaluate the polymer material used for simulations, the impact of different wall thickness on filling and packing a part, and how clamp tonnages and volumetric shrinkages are affected by wall thicknesses.