The papermaking industry is a complex and sophisticated production process. From the preparation of raw materials to the final forming and processing of paper, various types of rollers are required to achieve this. Each roller has its specific functions and roles, which are crucial to ensuring the quality and production efficiency of paper.

This article will introduce in detail the different types of rollers required in the papermaking industry and their specific functions.

Which rollers are needed in the papermaking industry?

The 9 major rollers needed in the papermaking industry:

1. Felt Roll,

2. Forming Roll,

3. Press Roll,

4. Dryer Cylinder,

5. Coating Roll,

6. Rubber Roll,

7. Guide Roll,

8. Chrome Plated Roll,

9. Reeling Roll.

1. Felt Roll:

The Felt Roll is a roller used to support and guide the felt in the papermaking machine. The felt plays a role in transferring and dehydrating in the papermaking process, and the Felt Roll ensures that the felt runs in the correct position and tension.

Functions of Felt Roll:

● Support and guide: The Felt Roll supports and guides the felt so that it runs smoothly in the papermaking machine.

● Transfer pulp: Through the Felt Roll, the pulp is evenly distributed on the felt, which helps to form uniform paper.

2. Forming Roll:

The Forming Roll is a roller used to support the forming mesh in the papermaking process. The forming mesh is an important part of pulp forming, and the Forming Roll plays a role of support and transmission.

Functions of Forming Roll:

● Support the forming mesh: The Forming Roll supports the forming mesh to ensure that the pulp can be evenly distributed on the forming mesh.

● Provide transmission power: The Forming Roll provides power through the transmission device to make the forming mesh run at an appropriate speed.

3. Press Roll:

The press roll is a roller used to remove moisture from paper. By applying pressure, the moisture in the paper is squeezed out to improve the dryness and compactness of the paper.

Press Roll Function:

● Dehydration: The press roll applies pressure to squeeze out the moisture in the paper and improve the dryness of the paper.

● Enhance compactness: Through the pressing process, the fibers of the paper are more tightly combined, improving the strength and quality of the paper.

4. Dryer Cylinder:

The dryer cylinder is a roller used to dry paper. It is usually heated to a high temperature and evaporates the moisture in the paper through contact heat transfer, thereby drying the paper.

Dryer Cylinder Function:

● Drying paper: The dryer cylinder evaporates the moisture in the paper through high-temperature contact to achieve the purpose of drying.

● Shape the paper: The dryer cylinder can also help shape the paper during the drying process to achieve the required flatness and size.

5. Coating Roll:

Coating Roll is used to evenly coat the coating on the surface of paper, giving the paper specific functions and properties, such as increasing gloss, smoothness and printing adaptability.

Function of Coating Roll:

● Uniform coating: Coating Roll ensures that the coating is evenly distributed on the surface of paper, improving the surface quality of paper.

● Imparting specific properties: Through the coating process, the paper has higher gloss, smoothness and better printing adaptability.

6. Rubber Roll:

Rubber Roll is used for gluing, sizing and printing in the papermaking process. Its soft surface can evenly coat the glue or ink on the surface of paper.

Function of Rubber Roll:

● Gluing and sizing: Rubber Roll is used to evenly coat glue or sizing on the surface of paper to improve the strength and water resistance of paper.

● Printing: During the printing process, rubber roller is used to evenly transfer ink to the surface of paper to ensure printing quality.

7. Guide Roll:

Guide Roll is used to adjust and control the running direction and position of paper or felt cloth to ensure that the paper maintains the correct path and tension during the production process.

Guide Roll Function:

● Adjust direction: The guide roller can fine-tune the running direction of paper or felt cloth to prevent deviation.

● Control tension: The tension of paper or felt cloth is controlled by the guide roller to ensure its smooth operation.

8. Chrome Plated Roll:

Chrome Plated Roll is mainly used for embossing and matting processes in the papermaking process. Its surface is hard chrome treated with high hardness and high finish.

Chrome Plated Roll Function:

● Embossing: Chrome Plated Roll is used to press specific patterns or textures on the surface of paper to increase the decorative effect of paper.

● Matting: Chrome Plated Roll is used for matting treatment to change the surface of paper from bright to matte, reduce reflection, and improve reading comfort.

9. Reeling Roll:

Reeling Roll is used to roll the finished paper into a roll for subsequent storage, transportation and processing. The quality of the reeling roll directly affects the neatness and tightness of the paper roll.

Function of Reeling Roll:

● Rolling into paper roll: The reeling roll rolls the paper into a roll for easy storage and transportation.

● Ensure tightness: Ensure the tightness and neatness of the paper roll by controlling the reeling speed and tension.

The papermaking industry is a complex production process that requires the use of multiple types of rollers to complete different processes. Each roller has its specific function and role, from felt rollers, forming rollers, pressing rollers to drying rollers, coating rollers, rubber rollers, deviation adjustment rollers, chrome-plated rollers and reeling rollers, which together constitute the core equipment of the papermaking process. These rollers play a vital role in the forming, drying, coating, embossing and reeling of paper, which not only improves the quality and production efficiency of paper, but also ensures the stability and consistency of the process.

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