Grades & Properties

Reference material on MFI, melt flow, tensile strength, impact, heat deflection, and other key grade specs.

A close view of a plastic part emerging from an injection molding machine.

Polypropylene MFI Selection for Injection Molding

Selecting the correct melt flow index range depends on part complexity, gate design, and cooling requirements. This guide explains how to match MFI values to injection

Oct 9, 2026 · 6 min read