Blade / Cutter / Knife

21C produces and supplies various industrial cutters such as Vertical Blade, Wheel Cutter, Trimming Blade, and Lens Cutter & Knife used in MLCC.

Blade / Cutter / Knife

21C produces and supplies various industrial cutters such as Vertical Blade, Wheel Cutter, Trimming Blade, and Lens Cutter & Knife used in MLCC.
We hold patents for blade manufacturing and have Cutter’s Edge calibration technology using Femto-second Laser, implementing the sharpest and longest-lived Edge.
It manages the flawless edge without chipping of Cutting Edge through automated inspection equipment, and manages it at the highest level in terms of illumination and integrity of cutting part.

APPLICATION

MLCC
Vertical Blade		 MLCC
Wheel Cutter		 MLCC
Trimming Blade		 Camera Module Lens Cutter Cutter for Secondary Batteries Cutter for Film

Blade processing

Femto-Second IR Laser

+

Top-Hat Module
(Flat Top Laser Beam)

  • Nano(10⁻⁹) Second IR Laser → Femto(10⁻¹⁵) Second Green Laser
  • Gaussian beam → Flat Top Laser Beam

FEMTOSECOND LASER BLADE processing

Ultra-short laser precision processing technology

FEMTOSECOND LASER BLADE Durability

Femtosecond Laser Edge Calibration Technology

[Zoom in on the blade]

[Perspective view of part A]

[B-B SECTION]

[Perspective view of part A]

[B-B SECTION]
BEFORE AFTER
  • Local Laser Ablation (Key Technology)
  • Blade Edge Tracking (Key Technology)

[Perspective view of part A]

[B-B SECTION]
BEFORE

[Perspective view of part A]

[B-B SECTION]
AFTER
  • Local Laser Ablation (Key Technology)
  • Blade Edge Tracking (Key Technology)

BLADE ELID grinding technique

ELID Grinding Technique (blade)

  • EL-BLADE Characteristics
  • Materials : Tungsten Carbide, Zirconia etc.
  • Blade Thickness(t1) : 100 ㎛
  • Blade Edge Thickness(t2) : Below 0.2 ㎛
  • Blade Edge Linearity : Below 5 ㎛
  • Blade Edge Symmetry : Below 3 ㎛
  • Blade Edge Roughness : Ra 0.02 ㎛
  • Angle(θ) Accuracy : ±0.3°

EL-BLADE Cutting Quality

  • Increase the surface illumination of VACUUM PLATE and BLADE
  • Burr that occurs during grinding is reduced
  • Automation of manual dressing operations

MLCC Cutting BLADE

Vertical Blade Cutting Blade(Double Step)
T W L
Requirement specification Requirement specification 444 ~ 224
T TO W WA L θ
0.4 0.1 ~ 0.03 22.4 4.39 ~ 3.32 230 ~ 100 ±18°
Raw Material : Tungsten Carbide.
Application : For cutting ceramic and electrodes sheet when MLCC manufactured.		 Raw Material : Tungsten Carbide.
Application : MLCC & Ceramic Condenser.
Vertical Blade
T W L
Requirement specification Requirement specification 444 ~ 224
Raw Material : Tungsten Carbide.
Application : For cutting ceramic and electrodes sheet when MLCC manufactured.
Cutting Blade(Double Step)
T TO W WA L θ
0.4 0.1 ~ 0.03 22.4 4.39 ~ 3.32 230 ~ 100 ±18°
Raw Material : Tungsten Carbide.
Application : MLCC & Ceramic Condenser.
  • Less than 5㎛ of straightness & parallelism on the cutting edge(Common)

WHEEL CUTTER for MLCC production process

Wheel Cutter Development of roller non-contact cutting method

Raw Material : Tungsten Carbide.
Application : For cutting ceramic and electrodes sheet when MLCC manufactured.

T D
2.0~0.3 60~38
  • Less than 10㎛ of concentricity(Common)
  • Less than 3㎛ of straightness & parallelism on the cutting edge(Common)
  • Wheel Cutter Increased life expectancy due to reduced load (non-contact): 15 to 20 times
  • Improve quality by preventing sheet cutting and reducing foreign substances (preventing chipping)
  • Wheel Cutter, adjustable up and down position
  • Improve productivity by controlling tension in real time according to air pressure (No need for setting time)
  • Reduce maintenance costs (no tension change)
Wheel Cutter
Raw Material : Tungsten Carbide.
Application : For cutting ceramic and electrodes sheet when MLCC manufactured.

T D
2.0~0.3 60~38
  • Less than 10㎛ of concentricity(Common)
  • Less than 3㎛ of straightness & parallelism on the cutting edge(Common)
Development of roller non-contact cutting method
  • Wheel Cutter Increased life expectancy due to reduced load (non-contact): 15 to 20 times
  • Improve quality by preventing sheet cutting and reducing foreign substances (preventing chipping)
  • Wheel Cutter, adjustable up and down position
  • Improve productivity by controlling tension in real time according to air pressure (No need for setting time)
  • Reduce maintenance costs (no tension change)

Scribing Wheel

Material : PCD(Poly Crystal Diamond)
(Sub-micron particle : 0.5um)

O/D Φ1.8mm ~ Φ3.1mm
I/D Φ0.8mm
Angle 90° ~ 150°
Pitch Quantity 3ea ~ 850ea
Pitch
SPEC.		 DEPTH 1.5㎛ ~ 15㎛
WIDTH 3.5㎛ ~ 45㎛

Precision Knife

Vertical Blade & U-Blade
Application : For cutting ceramic and electrodes sheet when MLCC manufactured

Raw Material : Tungsten Carbide.

T W L
Requirement specification Requirement specification 444 ~ 224
T Requirement specification
W Requirement specification
L 444 ~ 224
  • Less than 5㎛ of straightness & parallelism on the cutting edge

Raw Material : Tungsten Carbide.
Application : MLCC & Ceramic Condenser.

T TO W WA L θ
0.4 ~ 0.25 0.1 ~ 0.03 22.4 4.39 ~ 3.32 230 ~ 100 ±18°
T 0.4 ~ 0.25
TO 0.1 ~ 0.03
W 22.4
WA 4.39 ~ 3.32
L 230 ~ 100
θ ±18°

Raw Material : Tungsten Carbide.
Application : MLCC & Ceramic Condenser.

T W L θ
2.0 ~ 0.1 24 ~ 19 440 ~ 100 40° ~ 7°
  • Less than 5㎛ of straightness & parallelism on the cutting edge

Wheel Cutter & Ring Knife

Wheel Cutter & Ring Knife
Application : For cutting ceramic and electrodes sheet when MLCC manufactured

Raw Material : Tungsten Carbide.
Application : For cutting ceramic and electrodes sheet when MLCC manufactured.

T D
2.0 ~ 0.3 60 ~ 38
  • Less than 10㎛ of concentricity
  • Less than 3㎛ of straightness & parallelism on the cutting edge

Raw Material : Tungsten Carbide.
Application : Films, Paper & The others.

T d D θ
4 ~ 0.2 160 ~ 80 260 ~ 100 90° ~ 4°
  • Less than 10㎛ of concentricity
  • Less than 3㎛ of parallelism on the cutting edge

Lens Cutter & Knife

Lens Cutter & Knife
Application : Camera Lens Cutting

Raw Material : Tungsten Carbide.
Application : The gate area for Plastic lens.

T d D θ
4 ~ 0.2 160 ~ 80 260 ~ 100 90° ~ 4°
  • Less than 5㎛ of straightness & parallelism on the cutting edge

Blade / Cutter / Knife

21century Technology system

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