Wall slip

Moldex3D is a valuable tool to predict the phenomenon of 'wall slip' during injection molding. It provides comprehensive features that offer a better understanding of how the plastic flows and interacts with mold walls.

Moldex3D accurately simulates the behavior of the melt core in the mold and its interaction with mold surfaces. This simulation helps identify areas where the material is moving too fast by visualizing the flow speed and direction. This could be due to factors such as a high injection speed or low viscosity, which can contribute to slippage on the walls. The same applies to temperature distribution in the mold during injection. If the temperature is not properly controlled, especially if it is too high, the plastic's viscosity can decrease, making it more likely to slide along the mold walls.

Moldex3D optimizes process parameters, such as injection pressure, speed, and mold temperature, by simulating their effects and identifying areas of the mold where slippage is likely to occur. These areas may be in complex zones or transition sections where plastic flow changes rapidly. Once these areas are identified, the mold design can be adjusted. This includes adding grooves or textured surfaces to improve adhesion between the plastic and mold walls, thereby reducing the risk of slippage.

Wall slip can affect the quality of the final product, particularly regarding deformation after cooling. Moldex3D provides detailed insights into this phenomenon by simulating the flow of plastic, temperature distribution, viscosity, and material behavior within the mold.