PET calcium carbonate masterbatch

Omya has developed Omya Smartfill in PET to facilitate the production of highly filled calcium carbonate masterbatch for use in PET processing.

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Minimizing PET degradation by using Omya Smartfill in PET in compounding

The presence of moisture and some additives degrades polyethylene terephthalate (PET) during extrusion.

 

For this reason, masterbatch manufacturers have avoided the use of calcium carbonate in PET masterbatches and compounds.

 

Since the launch of Omya Smartfill in PET, it has been possible to take advantage of the unique benefits that calcium carbonate offers polymer processors.

 

These include strengthening the product, reducing costs, increasing opacity and reducing the carbon footprint.

pet masterbatch

An environmentally friendly Omya Smartfill in PET solution for white bottles

White opaque PET bottles are considered more recyclable than white opaque HDPE bottles. However, the high titanium dioxide content in single-layer bottles causes high costs and increased abrasion.

 

Thanks to the functionality of Omya Smartfill in PET, both are improved in PET bottle production and the desired opacity for UHT milk bottles is achieved in the stretch blow molding process (SBM) with Omya Smartfill in PET and the addition of a smaller amount of titanium dioxide.

pet masterbatch

Omya Smartfill in PET for low density white opaque BOPET film

Due to its particle size, Omya Smartfill in PET is an alternative to the more expensive precipitated barium sulfate in low density white opaque BOPET films.

 

Thanks to the lower density of Omya Smartfill in PET and its excellent voiding properties, a significantly lower film density can be achieved in white opaque BOPET films.

pet masterbatch

Improved opacity of white PET masterbatch

Omya Smartfill in PET improves the distribution of titanium dioxide particles in PET and increases opacity.

 

By replacing one part titanium dioxide with two parts Omya Smartfill in PET, coloring costs can be reduced, and the carbon footprint improved.

pet masterbatch

Sustainability and reduced carbon footprint

Omya Smartfill in PET has a significantly lower carbon footprint than PET and titanium dioxide, contributing to an overall reduction in the carbon footprint of the bottle.

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Benefits

  • Less PET degradation during compounding
  • Lower costs for white PET masterbatch production
  • Production and product advantages with SBM and BOPET

Talk to an Expert

If you would like some advice about how Omya calcium carbonate can support you in masterbatch production, you can speak to our expert team.

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