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The concentrates contain between 70-85% of fine, treated CaCO3 that combines different types of resins.
Benefits:
- a 3-20% cost saving in raw materials, depending on the precentage of concentrate used
- better bubble stability, increased production efficiency and easier transformation
- increased impact and tear resistance
- improved the barrier effect against humidity and oxygen
- modifies the surface for improving the anti-blocking effect, printibility and weldability
Increased productivity:
- CaCO3 increases the thermal conductivity of the extruded product, providing faster heating and cooling of the polymer
- improved extrusion processability/transformation and performance
- improved manipulation and transformation
- significant increase in line speed and reduced processing times
Improvement in physical properties:
- improved impact resistance
- increased stiffness and tear resistance
- improved film sealing
- increased the barrier against humidity and oxygen
- improved printing
- provides anti-blocking effect
Usage recommendations:
- applying CaCO3 does not require modification in the production process
- the MB concetrates produce an off-white appearance in films without pigmentation, which decreases the content of TiO2
- coloured films may appear with lighter colour. This is fixed by reformulating the colour masterbatch, without increasing the addition rate
The ideal feed systems are:
- gravimetric feeder
- volumetric feeder
- centralised mixing stations also work well