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Rheometrical die heads

Analyze rheometric properties of polymer melts to precisely describe flow behavior.

Your advantages

  • Practice-oriented plastification under processing conditions
  • Continuous operation
  • Multifunctionality: processing and measuring
  • Uniform plastification, gels, surface gloss
  • Color dispersion and color check
  • Transparency and formation of streaks
  • Swelling and contraction behavior
  • Segregation of individual recipe components of a compound
  • Output per unit of time

Practice-oriented plastification under processing conditions

All slot capillary dies are highly polished and have a coating against corrosion and abrasion.

A precise description of the flow processes within polymer processing machines implies exact knowledge of the rheological characteristics of polymer melts, in particular of their viscosity behaviour within a wide, practice-oriented range of shear rates.

The Brabender capillary rheometer system, consisting of a laboratory extruder with a suitable drive unit, a rheometric capillary die head, and a high-precision melt pump covers a practice-oriented range of shear rates and allows reliable statements about the material behaviour during different processing stages. The advantages compared to conventional high-pressure capillary rheometers are evident:

The program of measuring die heads is completed by several special measuring die heads:

  • 2- and 3-stage slot capillary die heads
    for the determination of shear and elongational viscosity to assess the flow behavior of the melt
  • Garvey die head (ASTM D 2230)
    special measuring die for testing elastomers
  • Swelltest die head