Paper Industry
Calcium carbonate has revolutionized the paper industry as both a filler and coating pigment. Micron Plus provides ultra-fine GCC grades that deliver exceptional brightness, improved printability, and significant cost savings through effective fiber and pigment substitution.
In paper coating applications, calcium carbonate is used to produce a whiter, brighter sheet with superior surface characteristics. In paper filling applications, GCC improves whiteness while reducing costs by replacing expensive fiber and pigments. The chemical properties of calcium carbonate also contribute to the production of non-acidic paper, which offers greater archival stability.
Ground calcium carbonate is generally recognized as having the best potential as an economic filler-for-fiber substitution, while also providing advantages in high strength, easier drainage, and improved machine productivity.
Applications & Recommended Grades:
| Application | Recommended Grades | Key Benefits |
|---|---|---|
| Paper Fillers | M5, M8 | Fiber substitution, high strength, easier drainage, increased productivity |
| Coating Pigments | M5, M8 | High brightness, low binder demand, better runnability, excellent printability, desired gloss |
Why Calcium Carbonate in Paper?
As a Filler:
- Replaces expensive fiber and pigments, reducing raw material costs
- Increases sheet whiteness and brightness
- Improves opacity and light scattering
- Enhances drainage and productivity on the paper machine
- Produces non-acidic (alkaline) paper for improved longevity
As a Coating Pigment:
- Achieves high brightness and superior gloss
- Reduces binder demand, lowering coating costs
- Improves runnability on the coater
- Delivers excellent printability and ink holdout
- Provides smooth, uniform surface finish