Quartz is a mineral, exists naturally in clusters and does not form huge stone blocks like granite, marble or other types of natural stone. This means that it needs to be converted into another form, such as engineered quartz stone, to make it usable in such application.
Engineered quartz stone composed of crushed quartz mineral, unsaturated polyester, pigments and additives. There are major brand names for engineered quartz available on the market such as: Caesarstone®, Samsung, Silestone, Hanstone, etc.
The manufacturing process begins with selection of raw quartz materials. They are crushed and blend into the ratio of 93% quartz and 3% of polyester resin and other additives. Because of its main composition of quartz, quartz stone is generally harder than granite.
strong>The mixture is compacted into slabs by a vacuum and vibration process at extremely high pressure. This process minimizes porosity and reduces water absorption. The slabs are then cured in a kiln at a temperature of 85 degree for a period of 30 minutes to attain the essential properties of resistance to stain and impact. The curing process may be accelerated by using ovens or steam. When curing is completed, the slabs are gauged, calibrated, polished and prepared for packing.