Resumen de Minerals in plastic
With the world's population expected to reach around nine billion by 2050, the size of the plastic packaging consumer base is projected to grow for at least the next 40 years. Reports agency Research and Markets figures indicate that the global plastic packaging industry grew by a compound annual growth rate (CAGR) of around 7.2% between 2001 and 2010, making it the fastest growing segment in packaging. Meanwhile, figures from research group Smithers Pira indicate that rigid and flexible plastics will experience the highest growth, at around 4% of all plastics materials in 2016.
Calcium carbonate is one of the most commonly used filler minerals in plastics. When its particle size is controlled, it can be used to increase strength and stiffness. Precipitated calcium carbonate (PCC) is a functional additive in plastics, which increases impact strength in rigid PVC resin systems. Its uses include window profiles, fencing, siding, thermoforming, calendared stock and foamed PVC. It is also used in unsaturated polyester for thickening and gloss production. Ground calcium carbonate (GCC) and ground dolomite are used for resin extension and economy.
