In the measuring extruder / Extrusiograph®, the sample material is plastified under practice-oriented conditions and extruded through the die head. All measuring values such as torque, melt temperature, melt pressure are recorded continuously and represented in the form of tables and diagrams parallel to the current test.
The extrudate is tested for various criteria:
- Uniform plastification, gloss, gels
- Color dispersion and color matching
- Transparency and formation of streaks, e.g. with transparent materials
- Swelling and contraction behaviour
- Segregation of individual recipe components of a compound at the die and/or at the screw`s tip (e.g. titanium dioxide)
- Output per unit of time, etc
Besides, subsequent mechanical material tests can be run with the extruded specimens.The Brabender® measuring extruders and Extrusiograph® can be mounted very quickly and easily to the drive unit. The torque is transmitted electronically which protects both the drive unit and the measuring extruders and Extrusiograph® from damage due to
overload.