Ningbo Inno Pharmchem Co., Ltd. is dedicated to supplying essential chemical and mineral products that enhance various industrial processes. Among these, calcium carbonate (CaCO3) plays a significant role in the paper industry, contributing to both product quality and manufacturing efficiency.

In papermaking, calcium carbonate is primarily used as a filler and coating pigment. Its fine particle size and high brightness make it an excellent material for improving the optical properties of paper. When added to the pulp, it acts as a filler, increasing the paper's opacity and brightness. This allows manufacturers to reduce the amount of expensive wood pulp used, leading to significant cost savings. The high expansibility of calcium carbonate also means that a smaller quantity can achieve a desired level of opacity and bulk, further contributing to economic efficiency in the papermaking process.

Beyond its role as a cost-saving filler, calcium carbonate also enhances the surface characteristics of paper. It contributes to improved gloss and smoothness, which are critical for high-quality printing papers and specialty grades. The controlled addition of calcium carbonate can also influence the paper's ink holdout and printability, ensuring sharper, clearer images and text. Precipitated calcium carbonate (PCC), in particular, can be tailored to specific particle sizes and shapes to optimize these properties, offering greater control over the final paper product.

The pH-neutral nature of calcium carbonate also makes it a preferred choice for archival paper, as it helps to prevent the degradation that can occur in acidic paper products over time. This ensures the longevity and stability of important documents and publications.

Ningbo Inno Pharmchem Co., Ltd. supplies high-quality calcium carbonate suitable for various papermaking applications. Our products are designed to help manufacturers achieve superior paper quality, improve production efficiency, and reduce overall costs. By integrating our calcium carbonate into their processes, paper mills can produce brighter, smoother, and more durable paper products that meet the demands of today's market.