In the modern papermaking industry, cooling roller plays an important role as one of the key equipment. Cooling roller can effectively control the temperature and ensure the stability and quality of the paper production process.

This article will explore the importance of Chill Roller in the papermaking industry, detail its application in key production links, and explain its impact on paper quality and production efficiency.

What is a cooling roller?

A cooling roller is a roller device that reduces the surface temperature by circulating a cooling medium (such as water or refrigerant) inside. It contacts the surface of the paper and quickly transfers heat to the cooling medium, thereby achieving rapid cooling and temperature control of the paper.

Features of cooling roller:

Features of cooling roller:

Cooling roller has the following key features: efficient cooling capacity, durability and corrosion resistance, and high surface finish:

● Efficient cooling capacity: The cooling roller can quickly transfer the heat of the paper to ensure rapid cooling and uniform temperature of the paper.

● Accurate temperature control: The cooling system inside the cooling roller can accurately control the temperature to ensure the temperature of the paper is stable during the cooling process.

● Durability and corrosion resistance: cooling rollers are usually made of high-strength and corrosion-resistant materials, can work stably for a long time, and adapt to the high humidity and acid-base environment in papermaking.

● High surface finish: The surface of the cooling roller is precisely processed with high finish and low friction coefficient, which helps to improve the surface quality of the paper and reduce adhesion.

Why does the papermaking industry need to use Chill Roller?

In the papermaking industry, Chill Roller plays an important role in many key links, mainly used in pulp dewatering and forming, paper coating and drying, paper calendering and finishing.

Pulp dewatering and forming:

The initial stage of papermaking includes pulp preparation, dewatering and forming. During the forming process, the pulp is spread into thin sheets and gradually dehydrated. This process generates a lot of heat, which needs to be cooled quickly to ensure the stability and quality of the paper.

The role of cooling roller in pulp dehydration and forming:

● Pulp dehydration: During pulp dehydration, cooling roller is used to quickly reduce the temperature of pulp, prevent pulp from denaturation or degradation at high temperature, and ensure the physical properties and chemical stability of paper.

● Paper forming: During paper forming, cooling roller is used to provide uniform cooling effect to ensure uniform forming and surface quality of paper. Its efficient cooling capacity can improve the flatness and strength of paper and reduce defects and wrinkles on the surface of paper.

Paper coating and drying:

Coating and drying are indispensable links in the papermaking process. During the coating process, a layer of special materials (such as pigments, adhesives, etc.) is coated on the surface of paper, and then dried. A lot of heat is generated during coating and drying, and timely cooling is required to ensure the uniformity of the coating and the quality of paper.

The role of cooling roller in paper coating and drying:

● Coating cooling: During the coating process, Chill Roller is used to quickly cool the coated paper to prevent the coating material from deteriorating or falling off at high temperature and ensure the adhesion and uniformity of the coating.

● Drying and cooling: During the drying process, the Chill Roller is used to provide a uniform cooling effect to prevent excessive shrinkage or deformation of the paper during high-temperature drying, and to improve the flatness and quality of the paper.

Paper calendering and finishing:

Calendering and finishing are important links in improving the surface quality and appearance of paper during the papermaking process. During the calendering process, the paper is treated with high temperature and high pressure to make its surface smoother and flatter. During the finishing process, the paper undergoes multiple processes to further improve its appearance and performance.

The role of the Chill Roller in the calendering and finishing of paper:

● Calendering and cooling: During the calendering process, the Chill Roller is used to quickly cool the paper after high temperature and high pressure treatment to prevent the paper from deforming or being damaged at high temperature, and to ensure the smoothness and flatness of its surface.

● Finishing cooling: During the finishing process, the Chill Roller is used to provide a uniform cooling effect to ensure the stability and quality of the paper after multiple processes, and to improve the appearance and performance of the paper.