At NINGBO INNO PHARMCHEM CO.,LTD., we recognize the intricate processes that transform raw materials into everyday essentials. Paper manufacturing is one such industry where the subtle yet significant impact of specific chemicals can dramatically alter the final product's quality. Among these crucial chemicals is Gum Rosin, a natural resin that plays a vital role in paper sizing.

Paper sizing is a process that imparts resistance to liquid penetration, primarily water and ink, to paper. Without sizing, paper would be highly absorbent, making it unsuitable for printing and writing. Gum Rosin, a key ingredient in traditional and modern paper sizing formulations, works by reacting with alum (aluminum sulfate) to form aluminum resinates. These resinates are then adsorbed onto the cellulose fibers of the paper pulp. When the paper is dried and heated, the resinates melt and form a continuous film, creating a barrier that reduces the paper's absorbency.

The benefits of using rosin for paper sizing are substantial. Firstly, it significantly improves the water resistance of the paper, which is critical for preventing ink feathering and bleed-through during printing. This enhanced water resistance is also important for packaging materials that need to withstand moisture. Secondly, rosin sizing contributes to increased paper strength and improved smoothness. A smoother surface allows for better print quality and a more pleasant tactile experience.

The grade of rosin used can influence the effectiveness of the sizing process. While various grades exist, NINGBO INNO PHARMCHEM CO.,LTD. supplies WW grade Gum Rosin, known for its light color and purity, making it highly suitable for applications where appearance and performance are critical. As a reliable rosin for paper sizing, our product ensures that paper manufacturers can achieve optimal results, producing paper that meets stringent quality standards.

The economic efficiency of using Gum Rosin in paper manufacturing also makes it an attractive option. Its stable quality and favorable price point, coupled with its effectiveness in enhancing paper properties, provide a strong return on investment for paper mills. NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing high-quality, cost-effective solutions for the paper industry, ensuring consistent supply and technical support.

In conclusion, Gum Rosin is an indispensable component in the paper industry, primarily due to its effectiveness in the paper sizing process. Its ability to enhance water resistance, printability, strength, and smoothness makes it a cornerstone chemical for producing high-quality paper products. NINGBO INNO PHARMCHEM CO.,LTD. is proud to be a trusted supplier of premium rosin for paper sizing, contributing to the advancement of paper manufacturing worldwide.