* Compounding and pressure build-up optimized in two independent steps
Mixing on the XINDA Kneader and pressure build-up in the discharge unit are separated to enable the efficient optimization of both steps. This compounding system allows mixing at low pressure and temperature as well as optimized pelletizing, while maintaining temperature control at all times.
* Uniform, moderate shear rates
Uniformly moderate shear rates allow controlled mixing in the compounder at lower temperatures while imparting only the required shear for the task at hand. The narrow shear rate distribution compared to alternative systems ensures uniform shear histories for every individual particle. This results in high quality compounding with reduced energy input.
* High filler loadings
Filler loadings of up to 90% are possible with the compounder technology owing to partitioning into two or three feeder openings, the use of feed-in vessels such as side-feed screws, separate gravimetric feeding of filler, removal of trapped air by back venting, and excellent conveying efficiency. The moderate shear rates allow perfect handling of the highest viscosities at such high loadings.
* Intensive mixing at low specific energy input
XINDA multiple-flight compounders of the latest generation achieve better mixing at 15-40% lower overall specific energy input.This is because of an increased number of mixing cycles according to the needs of each individual process section. The energy for melting and mixing is provided almost entirely mechanically and optimally dissipated according to the imparted shear rates.
* Precise temperature control
The Kneader within the silane cable compounding technology and system permits precise temperature control owing to controlled energy input and uniform, moderate shear rates, along with precise temperature monitoring by thermocouples mounted at relevant positions along the barrel in hollow-bored kneading pins surrounded by polymer.