High-Precision Rewinder Slitting Knives | Top Blades & Bottom Anvil Knives for Paper, Film & Foil
$37.98
Achieve high-speed, dust-free material separation with Panda Carbide’s Premium Rewinder Slitting Knives and Bottom Anvil Blades. Engineered for the demanding dual-shaft and multi-shaft slitter rewinder machines used across the flexible packaging, commercial printing, and paper conversion industries, our shear slitting systems deliver mathematically synchronized cutting precision.
Our slitting configuration features an engineered combination of high-toughness Top Circular Knives and ultra-wear-resistant Bottom/Anvil Knives (Solid or Carbide-Tipped). By pairing complementary metallurgical properties, Panda Carbide reduces cutting edge friction, extends service intervals, and provides clean, burr-free slits on delicate films and high-density papers alike.
1. Technical Specifications & Mechanical Tolerances
To prevent dynamic vibration and axial runout at extreme conversion velocities, all slitting tools are ground to sub-micron industrial standards:
Outer Diameter (OD) Capacity: Customizable from Φ 50 mm to Φ 300 mm to match leading overseas slitter rewinder hubs.
Surface Polish Flank: Lapped down to Ra ≤ 0.05 μm for micro-smooth shearing interactions.
2. Strategic Material Processing Recommendations
Panda Carbide's shear slitting systems are meticulously ground to handle a vast spectrum of advanced flexible substrates and web matrices:
Paper Processing: Coated art paper, kraft linerboard, tissue paper, newspaper stock, and self-adhesive label laminates.
Plastic Films & Polymers: BOPP, PET, PVC, PE, LDPE, stretch wrap, and optical multi-layer films.
Metal Foils & Composites: Aluminum foil, copper foil, battery separator films, and laminated barrier foils.
3. Advanced Technical Solutions & Shearing Calibration Tips
Q: Why does the HSS top blade and carbide bottom knife combination maximize rewinding efficiency?
Hard-on-hard tool interaction (carbide against carbide) can lead to micro-chipping due to lack of elasticity. By running an elastic, razor-sharp HSS top blade against an ultra-hard, non-deforming tungsten carbide bottom anvil knife, the system cushions high-frequency mechanical shockwaves. This structural pairing preserves edge geometry, reduces paper dust by up to $85\%$, and ensures a clean slit profile without ragged edges.
Shear Slitting Setup Guidelines:
Overlap Depth: Maintain a minimal vertical blade overlap (typically 0.5 mm to 1.0 mm ) to avoid excessive side pressure and unnecessary friction-induced heat.
Side Pressure (Canted Angle): Calibrate the micro-spring pneumatic pressure of the top knife holder to ensure the minimum force required for clean separation is applied against the carbide bottom anvil wall. This protects the mirror flank finish.
4. OEM Machine Hub Compatibility
Our metric and imperial rewinder circular tools are manufactured to integrate directly into leading global slitting and finishing equipment lines, including:
Kampf, Jagenberg, and Goebel Slitter Rewinders
ASHE Converting Machinery, Catbridge, and Titan Systems
High-speed flexographic and rotogravure printing machine slitting sections
⚠️ Core Unique Selling Proposition (USP): Advanced Thermal Sinking Technology
The primary failure mode of conventional multi-groove bottom knives is the thermal loosening and catastrophic detachment of the carbide ring under high-speed frictional heat.
Panda Carbide resolves this bottleneck via our proprietary Precision Thermal Sinking & Interference Bonding Technology. By calculating strict thermodynamic expansion coefficients, the ultra-hard tungsten carbide outer cutting ring is shrink-fitted onto the steel core under precise temperature controls. This molecularly secure mechanical lock guarantees that the carbide rim will never wobble, loosen, or detach, even under continuous high-speed rewinding operations exceeding 1200 m/min.
