Chemical Fiber Cutting Blades

Precision blades for chemical fiber cutting, built for smooth operation and consistent cut quality.

Customized sizes are available, according to your drawing or sample.

Fully Custom
Expedited Production Processing

Chemical fiber cutting blades are precision consumables engineered for the high-speed severing of synthetic filament tows and staple fibers. These blades are specified by procurement engineers and maintenance supervisors overseeing polyester, nylon, acrylic, and polypropylene production lines. The primary technical hook is material selection: tungsten carbide grades deliver a hardness of HRC 62-64 for maximum edge retention in abrasive media, while high-speed steel (HSS) variants offer a balance of toughness and regrindability. Dimensional configurations typically include rectangular blades at 110 x 24 x 1.0 mm or 175 x 33 x 1.2 mm, with full customization accepted from customer drawings or OEM part numbers.

Tungsten Carbide Substrate
Blades are manufactured from micro-grain tungsten carbide, achieving a hardness of HRC 62-64. This substrate provides a wear life 3-5 times longer than conventional tool steel when cutting abrasive materials such as TiO2-delustered polyester.
Vacuum Heat Treatment for HSS
High-speed steel variants undergo vacuum heat treatment to a typical hardness of HRC 62-64, ensuring uniform grain structure and minimal distortion across the blade length, which is critical for maintaining a consistent cutting gap.
Precision Ground Cutting Edge
The cutting edge is finished with a precision grinding process, achieving a surface roughness of Ra ≤ 0.2 µm on the bevel. This minimizes fiber adhesion and reduces the force required for a clean cut.
Custom Dimensional Configurations
Standard sizes include 110 x 24 x 1.0 mm and 175 x 33 x 1.2 mm. Non-standard lengths, widths, thicknesses, and mounting hole patterns are produced to exact customer specifications, including reverse engineering from a sample blade.
Tight Parallelism and Flatness Tolerances
Blades are held to a flatness tolerance of 0.005 mm and a parallelism tolerance of 0.002 mm between the two faces. This ensures uniform clamping pressure across the blade and eliminates vibration at high cutting speeds.

Take a Closer Look

Polyester Staple Fiber Production
Nylon and Polypropylene Filament Cutting
Acrylic Fiber Processing
Specialty and High-Tenacity Fiber Lines

Polyester Staple Fiber Production
Used in staple fiber cutters to convert continuous filament tow into cut lengths of 32 mm to 102 mm. The blade's edge stability directly impacts the quality of the cut end and the generation of micro-dust.
Nylon and Polypropylene Filament Cutting
Installed in rotary and guillotine cutters for nylon 6, nylon 66, and polypropylene tow. The blade's non-stick surface finish prevents molten polymer buildup during high-throughput operations.
Acrylic Fiber Processing
Applied in cutting systems for acrylic tow, where the blade's corrosion resistance and sharpness are critical for processing fibers that are prone to fibrillation.
Specialty and High-Tenacity Fiber Lines
Suitable for cutting aramid, carbon fiber precursor, and other high-modulus fibers. Tungsten carbide blades are specified here for their ability to withstand the high shear forces without edge chipping.

Product discription

Chemical Fiber Cutting Blades are specialized blades designed for precisely cutting synthetic fibers used in the textile and manufacturing industries. Made from high-quality materials like tungsten carbide or ceramic, these blades offer excellent durability, sharpness, and resistance to wear. They are ideal for applications such as cutting polyester, nylon, and other chemical fibers, ensuring smooth and accurate cuts while maintaining high production efficiency.

Cutting tools for fabric material trimming

Technical Parameters

product name	industrial blades
size（Support customization）	110x24x1.0mm
size（Support customization）	175x33x1.2mm
HRC	62-64
Material	Tungsten carbide cutting blade
Features	High hardness, wear-resistant and durable
Outer packaging	cardboard box/wooden box

Technical Specifications

Dimensions	Standard: 110 x 24 x 1.0 mm, 175 x 33 x 1.2 mm. Custom range: Length 50-500 mm, Width 10-100 mm, Thickness 0.5-5.0 mm.
Materials	Tungsten Carbide (micro-grain), High-Speed Steel (M2, SKH51), D2 (Cr12MoV)
Hardness	Tungsten Carbide: HRC 62-64; HSS: HRC 62-64; D2: HRC 58-62
Tolerances	Thickness: ±0.01 mm; Length/Width: ±0.05 mm; Flatness: 0.005 mm; Parallelism: 0.002 mm
Surface Finish	Cutting edge bevel: Ra ≤ 0.2 µm; Blade faces: Ra ≤ 0.4 µm
Customisation	Custom dimensions, mounting hole patterns, edge angles, and material grades per customer drawing, sample, or OEM part number.

Why Choose Yishi

YISHI Machinery manufactures chemical fiber cutting blades in-house, controlling the full process from material selection to final inspection. Our vacuum heat treatment furnaces and precision grinding centers are calibrated for the specific tolerances required by high-speed fiber cutting lines. We maintain traceability on every blade lot, linking it to the raw material certificate and process parameters. For replacement blades, we can match your existing OEM part number or reverse engineer from a worn sample, ensuring a drop-in fit without modifying your cutter setup. Expedited production is available for urgent line-down situations.

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Frequently Asked Questions

What is the typical service life difference between tungsten carbide and HSS blades?

In abrasive applications, such as cutting TiO2-delustered polyester, tungsten carbide blades typically last 3-5 times longer than HSS blades between regrinds. However, HSS blades are less brittle and can be reground more times over their total lifespan. The choice depends on the specific fiber type and the presence of abrasive additives.
Can you manufacture blades to fit a specific OEM cutter model?

Yes. We manufacture replacement blades for common OEM cutter models from manufacturers like Fleissner, Neumag, and DM&E. Provide the OEM part number or a dimensional drawing, and we will produce a blade that matches the original specification for a drop-in fit.
What edge angle is recommended for cutting polyester staple fiber?

A typical edge angle for polyester staple fiber is between 18 and 22 degrees. The exact angle can be optimized based on the fiber denier and tow density. Our engineering team can recommend an angle based on your process parameters or match the angle on your current blade sample.
What is the standard lead time for a custom blade order?

Standard lead time for custom chemical fiber cutting blades is 15-20 working days from drawing approval. For urgent requirements, an expedited production service is available that can reduce lead time to 7-10 working days, subject to material availability and current production load.
How should these blades be stored to prevent edge damage?

Blades should be stored in their original VCI-protected packaging in a dry, temperature-controlled environment. Individual blade separators are used to prevent edge-to-edge contact. Avoid any storage condition that exposes the blades to humidity or corrosive atmospheres, which can cause micro-pitting on the cutting edge.