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Plastic sheets and thermoforming

Calcium Carbonate Masterbatch (CaCO3) for the manufacture of twin wall sheets

Calcium Carbonate Masterbatch (CaCO3) for the manufacture of twin wall sheets

The PLASPER® Calcium Carbonate Masterbatch is a mineral modifier with a high, very fine, treated CaCO3 content that has an excellent dispersion in the final product, indicated for direct addition in the processing of polyolefins. The PLASPER® mineral modifier is designed to increase productivity, reduce energy costs and improve properties of sheet.


Economic saving

  • Reduction in energy consumption
  • Reduction in raw material costs of 3% to 20%, depending on the percentage of PLASPER® used
  • Helps to reduce thickness
  • The PLASPER® concentrates produce a whitish appearance, which saves the use of TiO2
  • Using the PLASPER® CaCO3 MB allows the transformer to have control over their formulations, which allows for more flexibility in the purchase of raw material

Improvements in productivity

  • The CaCO3 increases the thermal conductivity of the minerals, which results in more rapid heating and cooling of the polymer (Fig. 1)
  • Better dimensional stability, increase in production and easier transformation
  • Improves the processability/transformation and the extrusion performance
  • Improves dispersion
  • Improves the impression of the final product

Improves mechanical properties

  • Increases rigidity
  • Increases impact resistance

Environmentally friendly

  • Carbon footprint smaller than the virgin polymer
  • Products are more environmentally friendly and sustainable with the use of PLASPER® CaCO3


  • The application of the PLASPER® Masterbatches does not involve any modification to the production process
  • The most suitable dosing systems are:
    • Gravimetric dosing unit
    • Volumetric dosing unit (the best way is to use the feeder at the neck, between the hopper and the extruder)
    • Centralised mixing stations also give good results
  • Dosing: between 3% and 20%


Our products are available in different types of packaging:

  • 25 kg Sacks
  • 1,250 kg Big-Bags
  • 25 Tn Tanker
Do you want to receive further information?
+34 938 468 369