スロット付きカミソリ刃

What do Slotted Razor Blades Mean?

“Slotted Razor Blades” are a type of industrial cutting blade characterized by their thin profile, extremely sharp cutting edge, and the presence of one or more elongated slots (often kidney-shaped or oval) along their body. These slots are primarily designed for secure and precise mounting onto specialized holders or machinery, allowing for accurate positioning and preventing rotation or slippage during high-speed slitting operations. While sharing the sharpness characteristics of traditional razor blades, Slotted Razor Blades are engineered for demanding industrial applications, particularly the slitting of thin materials such as films, foils, tapes, labels, and textiles. A common and highly effective material for these blades is tungsten carbide, which provides exceptional hardness and wear resistance for prolonged cutting life. Slotted Razor Blades are also sometimes referred to as “kidney slot blades,” “oval slot slitting knives,” “carbide slitting razor blades,” “thin film slitting blades,” or “precision slitting blades,” depending on the specific application and material being cut.

Uses and Applications of Slotted Razor Blades

Slotted Razor Blades are widely used in industries requiring precise slitting of thin, flexible materials:

• Film and Foil Converting: Precisely slitting plastic films (e.g., packaging films, BOPP, PET), aluminum foil, and laminates into narrow widths for various applications.
• Adhesive Tape Manufacturing: Slitting wide rolls of adhesive tapes, including pressure-sensitive tapes and specialty tapes, into specific widths.
• Label and Tag Manufacturing: High-speed slitting of label stock and tag materials into individual labels or multiple lanes.
• 繊維産業： Slitting lightweight fabrics, non-wovens, and technical textiles into narrow strips for various manufacturing processes.
• Medical Device Manufacturing: Cutting thin films and specialized materials used in medical packaging and device components.
• 包装産業： Slitting flexible packaging films for individual product wrapping or bag making.
• Battery Manufacturing: Precision slitting of thin separator films and foils used in battery production.
• Printing and Graphics: Slitting paper, film, and vinyl in finishing processes.

The use of Slotted Razor Blades, especially those made from tungsten carbide, ensures clean, burr-free cuts at high speeds, contributing to increased productivity and reduced material waste.

Common Materials for Slotted Razor Blades

While various materials can be used, Slotted Razor Blades for demanding industrial slitting, particularly of thin films and foils, are commonly manufactured from:

• Tungsten Carbide (WC): This is a prevalent material due to its exceptional hardness (significantly higher than steel), excellent wear resistance, and ability to maintain an extremely sharp cutting edge for extended periods. Tungsten carbide blades are ideal for high-speed slitting and processing abrasive materials, offering a long lifespan and consistent cutting performance.

Other materials that may be used depending on the specific application include:

• Stainless Steel (various grades): Offers good corrosion resistance and can be sharpened to a fine edge, suitable for some less demanding slitting tasks.
• 高炭素鋼: Can achieve high sharpness but may lack the wear resistance of tungsten carbide for continuous industrial use and may be more susceptible to corrosion. Often used with coatings.

The choice of material depends on factors such as the type and thickness of the material being slit, the required cutting speed, the desired blade lifespan, and the cost considerations. Tungsten carbide is often preferred for its superior performance in high-production environments.

Common Shapes and Features of Slotted Razor Blades

Slotted Razor Blades are primarily characterized by their thin, rectangular or trapezoidal shape and the presence of one or more mounting slots. Common shapes and features include:

• Rectangular Blades with Slots: A simple rectangular blade body with one or more elongated slots (typically kidney-shaped or oval) for mounting.
• Trapezoidal Blades with Slots: A trapezoidal blade body, offering a slightly different cutting angle, also featuring mounting slots.
• Single or Multiple Slots: Blades can have one or multiple slots depending on the required mounting stability and the design of the blade holder. Multiple slots provide more secure fastening.
• Precision Ground Edges: The cutting edge is meticulously ground to an extremely sharp angle to ensure clean and precise slitting of thin materials without tearing or snagging.
• Various Edge Angles: The angle of the cutting edge can be varied to optimize performance for different types of films, foils, and tapes.
• Polished Surfaces: The blade surfaces are often highly polished to reduce friction and prevent material buildup during slitting.
• Tolerances: スロット付きカミソリ刃 are manufactured to very tight tolerances to ensure consistent performance and accurate slitting widths.

The dimensions (length, width, thickness) and the size and placement of the slots are critical and are designed to match specific industrial slitting machinery. The thin profile of the blade minimizes material displacement during cutting.

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