Calcium carbonate plays an important role in the paper industry. It can be used as a filler, coating pigment, and functional additive to enhance paper properties, reduce production costs, and impart special functionalities to paper. With continuous advancements in papermaking technology, the application prospects of calcium carbonate in the paper industry are expanding. Its primary applications in the paper industry include the following:

1. Filler

Calcium carbonate is one of the most commonly used fillers in the paper industry. It fills the gaps between paper fibers, increasing paper density and smoothness.

The addition of calcium carbonate improves the whiteness, opacity, and gloss of paper, enhancing its printability.

Since its cost is lower than other fillers (such as kaolin), using calcium carbonate as a filler also helps reduce papermaking costs.

2. Coating Pigment

Calcium carbonate is used as a component in paper coatings to improve surface properties and enhance print quality.

Coatings containing calcium carbonate create a smoother paper surface and increase ink absorbency, thereby enhancing print clarity and color saturation.

Calcium carbonate coatings also improve the abrasion resistance and water resistance of paper, extending its lifespan.

3. Functional Additive

In the production of certain specialty papers, calcium carbonate can be used as a functional additive, such as a flame retardant or anti-static agent.

The addition of calcium carbonate imparts special properties to paper, such as flame resistance and anti-static effects, meeting the needs of different application fields.

4. Application Fields

Calcium carbonate is widely used in the production of various types of paper, including:

• Printing Paper: Writing paper, newsprint, magazine paper, etc.

• Packaging Paper: Cardboard, corrugated board, kraft paper, etc.

• Household Paper: Toilet paper, facial tissue, etc.

• Specialty Paper: Flame-retardant paper, anti-static paper, etc.

Recommended Product: Light Calcium Carbonate