Stainless Steel Wire Mesh for Cylinder Mould

How a Stainless Steel Wire Mesh Works in Cylinder Mould Paper Machine

Pulp passes through the headbox and is evenly deposited on the surface of the rotating cylinder mould and stainless steel wire mesh. Due to suction and gravity, negative pressure is generated within the mesh, allowing white water to flow through the mesh holes and into the cylinder mould before being discharged. Pulp fibers are trapped on the mesh surface, forming wet paper. As the cylinder mould rotates, the wet paper enters the nip between the press felt and the mesh, where it is squeezed and further dehydrated, densifying the fiber structure. After dehydration, the wet paper enters the press and dryer sections, where the stainless steel wire mesh is rinsed with high-pressure water and circulated.

The mesh count (number of openings per inch) of the stainless steel wire mesh is particularly important in this process. Generally, 60-70 mesh is used for newsprint and printing paper, while 90-100 mesh is used for thinner paper such as typing paper. The smaller the mesh count of the stainless steel wire mesh, the larger the mesh size and the better the water filtration performance, but the fiber retention and surface smoothness of the paper will vary.

Stainless Steel Wire Mesh Selection

Stainless steel wire mesh is a key consumable in cylinder mould paper machines, primarily due to its material properties.
Common stainless steel wire mesh materials include 304 and 316. 304 is sufficient for most common environments. For highly corrosive production environments, such as those involving waste pulp or specialized paper grades, 316 stainless steel wire mesh may be considered.

Sun Hong Stainless Steel Wire Mesh Structure

The performance of stainless steel wire mesh depends not only on the material, but also on its weave structure, which directly impacts dewatering efficiency and paper quality. In addition to the common plain weave, stainless steel wire mesh also comes in double weave and flat top weave styles. Most paper types (printing and typing paper) use a plain weave, while very thin paper types (cigarette paper, capacitor paper) use a double weave. Paddle or board paper can use a flat top weave.

Features of Stainless Steel Wire Mesh

• Excellent corrosion resistance: Stainless steel wire mesh is made of materials such as 304 and 316, which can effectively resist the erosion of water and chemicals in paper making production and maintain stable performance.
• High wear resistance: It can withstand the continuous friction and contact between pulp fibers and paper machine mesh components, significantly extending the service life and reducing the downtime and cost caused by frequent replacement.
• High fatigue strength: It meets the continuous tension and mechanical stress during paper machine operation, is not prone to relaxation and deformation, and ensures production stability.
• Precise and uniform mesh: Sun Hong stainless steel wire mesh weaving technology ensures extremely high mesh accuracy and consistency, which not only ensures the dryness and fiber distribution of paper sheets, but also the uniformity of paper sheets, especially for toilet paper, which requires good softness and feel.
• Smooth paper sheet peeling: The stainless steel wire mesh surface is smooth and has no joints and knots, making it easier for wet paper to transfer from the mesh surface, reducing the risk of sticking to the mesh and breaking.