In the film processing industry, the precision and efficiency of the slitting process directly impact the final product quality and production costs. As a core tool in the industrial slitting industry, the tungsten steel three-hole cutter, with its unique structural design, excellent material properties, and wide applicability, has become a key piece of equipment in the film slitting process.
Core Technical Advantages of the Tungsten Steel Three-Hole Cutters
The tungsten steel three-hole cutter is made of nano-scale ultrafine tungsten-cobalt alloy and is manufactured through precision processes such as hot isostatic pressing and high-temperature sintering. Its unique three-hole design not only optimizes the blade’s load-bearing structure but also significantly improves cutting stability by reducing friction and thermal expansion. Compared to traditional single-hole blades, the three-hole structure reduces stress concentration by over 30%. Combined with the double-sided cutting edge, the blade maintains a cutting accuracy of 0.01mm even at high speeds, making it particularly suitable for thin film materials requiring extremely high cut smoothness.
In terms of durability, the tungsten steel three-hole cutter boasts a lifespan over 100 times that of ordinary steel blades. Taking BOPP film slitting as an example, after 1000 hours of continuous operation, the blade wear is only 0.02mm, while comparable steel blades show wear exceeding 0.5mm. This long-lasting wear resistance significantly reduces the frequency of machine downtime for blade changes, increasing production efficiency by over 40%.
Technical Compatibility Analysis for Applicable Film Materials
- Plastic Films
For slitting plastic films such as PET, PP, and PE, the tungsten steel three-hole cutter achieves stretch-free and indentation-free precision slitting through edge polishing (Ra ≤ 0.1μm) and dynamic balancing (G2.5 grade). For example, in lithium battery separator slitting, its 0.5μm cutting accuracy ensures a stable separator porosity within the 40%-60% range, meeting the stringent safety requirements of power batteries.
- Functional Films
For specialty films such as pearlescent, aluminized, and optical films, the tungsten carbide three-hole blade utilizes a special coating technology to achieve a cutting edge hardness exceeding HV3200, effectively resisting chemical corrosion from additives. When slitting BOPP pearlescent film, this blade can withstand temperatures up to 120°C, while maintaining a burr height of less than 0.005mm, fully meeting the aesthetic requirements of high-end packaging materials.
- Composite Materials
For slitting materials such as aluminum-plastic composite film and paper-plastic composite film, the tungsten carbide three-hole blade utilizes a three-hole positioning system to achieve simultaneous cutting of multiple layers, keeping the cut misalignment within ±0.03mm. For example, with aluminum-plastic composite film for pharmaceutical packaging, its 0.1mm cutting accuracy ensures the integrity of the heat-seal layer and the aluminum foil layer, improving product sealing by two orders of magnitude.
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