How does the melt flow index of WPC affect bench manufacturing processes?

The melt flow index (MFI) of wood-plastic composites (WPC) plays a critical role in bench manufacturing processes, influencing both production efficiency and product quality. MFI measures the viscosity and flowability of molten WPC, which directly impacts extrusion, molding, and shaping during manufacturing.

A higher MFI indicates lower viscosity, allowing the material to flow more easily through molds and dies. This can enhance production speed but may reduce mechanical strength due to shorter polymer chains. Conversely, a lower MFI results in thicker, slower-flowing material, requiring higher processing temperatures and pressures, which can increase energy consumption and tool wear.

Optimizing the MFI ensures consistent material behavior, reduces defects like warping or voids, and improves the final product's durability. Manufacturers must balance MFI with other properties to achieve efficient bench manufacturing while maintaining structural integrity in WPC-based products.