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Polymer Injection Moulding

Benefits of Real-Time Monitoring:

• In-line Quality Control
• Reduce waste and reject rate
• Increase production yield
• Reduce cycle time

Why Ultrasound?

• See through the barrel, the mould or the die
• Sensitivity to both material properties and processing conditions
• Non-destructive (no alteration of the materials)
• Non-invasive (no interference with the process)
• Real-time monitoring
• Robust (no complex or moving parts)
• Easy operation and maintenance
• Cost effective
• Capable of monitoring from feed hopper to exit

How does it work?

• Pulses of low power ultrasound (less than 0.1 Watt = non-destructive) can be propagated through the polymer melt
• Sound velocity, attenuation, reflection coefficient and scattered signals are measured in real time and dependent on molecular, chemical and physical properties of the material
• Any change in the material properties and process parameters may be linked with the variations of the ultrasonic properties