The use of minerals in paper production has long been known, kaolin and clay are the main raw materials used as fillers in paper production but the cost is high while calcium carbonate is abundant in nature. , the cost is lower but the whiteness is higher, in paper environment is usually acidic environment, using calcium carbonate changes into neutral environment becomes a good alkaline environment for paper production.
Because of its wide application, today calcium carbonate is the most important filler and coating agent in the papermaking process. Fillers and calcium carbonate coatings will have a higher whiteness, giving the paper more opacity, gloss and good printability at competitive prices.
Calcium carbonate can be used in very large quantities, the amount of wood material can be reduced without affecting the durability of paper. Paper machines can operate at higher speeds and finish dry paper faster, these improvements save energy costs.
CALCIUM CARBONATE AS A FILLER IN PAPER:
Calcium carbonate is used as filler in writing paper, printing paper or packaging paper and cardboard, fillers in paper have advantages over non-filler types as follows: paper produced with a smooth surface, high brightness, luster, higher gloss and improved printing ability.
CALCIUM CARBONATE AS A COATING AGENT IN PAPER:
Coated means increasing the surface quality of paper and rigid paper, the large-scale coating process under the fiber structure layers will leave a uniform paper surface for better printing process.
Other Related Applications
Calcium carbonate provides the main and necessary source of calcium oxide to produce ceramics, calcium oxide melts at a temperature 1.050oC, help enhances mechanicaland chemical durability of glassess and reduce shrinkage from firing process.
Choose the right kind of calcium carbonate (top cut control), customers can achieve cost reduction by allowing higher calcium carbonate fillers which do not affect the production process as well as the final product
This is a traditional application for all products of poultry food; it is seen as not only the ingredients but also as additives.
Being a product in nature, calcium carbonate is applied to process the environment
The minerals used in paper production has been known for a long time, kaolin and clay are the main materials used as fillers in paper production, but high costs meanwhile calcium carbonate are available in the nature, the price is low, the whitness is higher, the production environment is acid, the use of calcium carbonate makes changes into neutral and alkaline environment that is good for manufacturing papers
Calcium carbonate is one of the main ingredients in glass along with silica and sodium carbonate.