How Is Stainless Steel Wire Mesh for Paper Making Machine

As a critical dewatering component, stainless steel wire mesh plays a pivotal role in the papermaking process—it not only facilitates the formation of pulp fibers and the dewatering of the paper sheet but also serves a supportive function during the paper’s conveyance. Consequently, selecting high-quality stainless steel mesh is essential for ensuring the quality of the finished paper product and your manufacturing efficiency.

Why Stainless Steel Wire Mesh

Production by the high-quality stainless steel, stainless steel wire mesh screen has a superior characteristic like tensile strength, flexural strength, abrasion resistance, elasticity, non-toxicity, and chemical resistance. Thanks to stainless steel mesh’s exceptionally long service life, coupled with its ability to help minimize downtime and paper waste, the mesh effectively enhances your Return on Investment (ROI).

The Role of Stainless Steel Wire Mesh

Usually, the stainless steel wire mesh is used in the forming section of the paper machine, where it performs critical functions such as separating pulp fibers, dewatering, and sheet formation.

• Pulp Fiber Screening — Stainless steel fabric with its precision-engineered mesh aperture design can guarantee the effective removal of pulp impurities and the paper strength while rendering the paper surface flatter and smoother.
• Dewatering Function — During the forming stage, preliminary dewatering is achieved through the stainless steel wire mesh to remove excess moisture; this process directly influences the paper’s moisture content and thickness.
• Enhanced Production Efficiency — Stainless steel wire mesh increases pulp throughput and dewatering efficiency, thereby shortening the paper production cycle at the source and boosting paper sheet overall productivity.

Characteristics of Stainless Steel Wire Mesh

Different from traditional forming fabrics manufactured by PET and PA, which are highly susceptible to deformation at high temperatures, prone to aging in strong acidic or alkaline environments, and easily fractured. Stainless steel wire mesh can withstand high temperatures of 180–200°C, is resistant to hydrolysis and aging, is rust-resistant, and can withstand harsh environments such as strong acids and bases. So the stainless steel fabric can fit more paper making scenes.

Stainless steel wire mesh also possesses exceptional tensile strength properties. Typically, the wire diameter of stainless steel wire ranges from 0.02 mm to 2 mm; when manufactured using specialized weaving processes, its tensile strength can reach upwards of 800 N/mm² (in compliance with ISO 9044 standards).

Moreover, the stainless steel wire mesh also exhibits excellent compressive characteristics and excellent filtration performance with its fine stainless steel wires for filtering minute particles. Thus, stainless steel fabric is well-suited for filtration, screening, and other processes within the papermaking industry, especially on high-speed paper machines.

Choose The Most Suitable Stainless Steel Wire Mesh

Selecting the appropriate, high-quality stainless steel wire mesh is the first step toward the success of your papermaking process. Here, Sun Hong presents several key factors to assist you in making the best possible choice.

Mesh Count

In applications involving stainless steel wire mesh, the mesh count exerts a significant influence. Therefore, selecting the appropriate stainless steel wire screen helps enhance dewatering efficiency, pulp distribution uniformity, sheet flatness, and the overall quality of the papermaking process in the forming section.

The precision and uniformity of the stainless steel wire mesh’s pore size determine the smoothness, thickness, and uniformity of the paper. If the pore size of the mesh is excessively large or uneven, the pulp cannot be distributed uniformly, which ultimately results in a rough paper surface and may even lead to uneven thickness.

Below, Sun Hong shows some commonly used stainless steel wire mesh counts for your reference. Usually, the lower the mesh count, the larger the mesh openings, and the better the water filtration performance.

• Coarse Paper, Kraft Paper, and Industrial Paper — 40 to 50 mesh stainless steel wire fabric
• Papermaking and Printing Paper — 60 to 70 mesh stainless steel mesh
• Typewriting Paper — 90 to 100 mesh stainless steel papermaking wire mesh

Weaving Type

Stainless steel wire meshes are classified into four types: plain weave (single warp), twill weave (double warp), satin weave (triple warp), and leno weave.

Among these, plain weave is the most fundamental and traditional weaving technique employed in the production of stainless steel wire mesh. Its underlying principle involves the warp and weft wires interlacing in an alternating “one-up, one-down” pattern, thereby ensuring a flat surface and a compact structure. This design endows plain-weave stainless steel wire fabric with exceptional structural stability, enabling it to withstand significant compressive and tensile forces.

• Plain Weave Stainless Steel Mesh — Most papers (printing paper, typewriting paper)
• Twill Weave Stainless Steel Wire Mesh — Ultra-thin papers (cigarette paper, capacitor paper)
• Dutch Weave Stainless Steel Fabric — Pulp board and cardboard

Materials

The primary materials used in the manufacture of stainless steel mesh include 304, 304L, 306, and 306L stainless steel. Depending on the specific material selected, the performance of the stainless steel fabric across various characteristics will vary.

• 304 stainless steel mesh exhibits excellent corrosion resistance under standard papermaking conditions.
• 316 stainless steel wire mesh offers superior corrosion and heat resistance, making it suitable for high-speed papermaking operations or environments involving more demanding chemical conditions.