Polymer melt is pressed with a defined volume through a melt filter and the pressure in front of the melt filter is monitored. Particles (contaminations, agglomerates in pigments, etc.) are caught in the filter and the pressure increases in front of the melt filter. The calculation of the pressure filter value (FT), according ISO 23900-5, starts at the end of the test by determining the initial pressure (P start) and the final pressure (P max) divided by the piment weight.

Main applications:

• Testing of pigment or additive dispersion

• Inspection of contamination in virgin and recycled polymers

Advantages:

• Extremely reduced downtime

• Reduction of the staff requirement

• Extremely safe in operation

• Manually operated

• Melt valve for continuous measuring without stopping the extruder

• Melt pump for constant melt flow-rate

• Melt filter preheating

• All design parameters and the evaluation correspond to the

• ISO Standard 23900-5