Stainless Steel Fiber Sintered Felt Market 2026

basic information

Demand for Polymer Melt Filtration of Stainless Steel Fiber Sintered Felt One of the main demands for stainless steel fiber sintered felt is polymer melt filtration in chemical fiber, film, and resin processing. In high-viscosity molten resins, foreign substances such as gels, carbides, and unmelted particles can affect product quality and the stability of spinning and extrusion processes. Stainless steel fiber sintered felt, with its three-dimensional deep filtration structure, is more capable of retaining contaminants internally compared to wire mesh materials that capture particles on the surface, thus ensuring longer filtration cycles. In fact, by 2026, products with filtration accuracy ranging from 0.5 to 200 μm will be available using sintered fiber felt made of 316L for polymer melt filters.

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Applications/Examples of results

Design and High Precision of Pore Structure in Stainless Steel Fiber Sintered Felt In stainless steel fiber sintered felt, the design of filtration performance combining fiber diameter, thickness, stacking density, and pore diameter distribution is crucial. Products are classified into high-precision types with ultra-fine fibers, medium-precision general-purpose types, and high-flow types with coarse fibers, with thicknesses differentiated into 0.3–0.5mm, 0.5–1.0mm, and over 1.0mm. In recent years, there has been a shift from a uniform pore structure to a gradient structure that combines coarse and dense layers. FUJI FILTER has also developed a multilayer structure that combines coarse fiber layers and fine fiber layers, achieving both filtration precision and contamination retention.