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TECHNICAL GUIDE

What Is MFI?

Melt Flow Index measures how easily molten plastic flows under specified conditions.

Melt Flow Index (MFI) Testing

Why Is It Important?

MFI influences:

  • Processing speed
  • Surface finish
  • Product consistency
  • Mould filling performance

Low MFI vs High MFI

Low MFI High MFI
Higher strength Easier flow
Harder processing Faster mould filling

Choosing the Right MFI

The ideal MFI depends on the product and manufacturing process.

FAQ

Not necessarily. The correct MFI depends on the application.