From printing quality, blade material, hardness, thickness to tip type, guide you to select the most suitable ink doctor blade, saving money and hassle.
1️⃣ Check printing precision
- Fine dots → choose thin edge, high hardness blade (e.g. 0.15mm, HRC 52-56)
- Solid color blocks → choose thick back, medium hardness (e.g. 0.20mm, HRC 48-52)
2️⃣ Select tip shape
- General printing → rounded tip (durable, less wear on plate)
- High definition → beveled/thin tip (clean ink scraping, slightly faster wear)
3️⃣ Determine material and hardness
- Ordinary ink → carbon steel blade (cost-effective)
- Corrosive ink → stainless steel or coated blade (rust-proof and durable)
- Hardness is not always higher: too hard damages plate, too soft leaves ink
4️⃣ Match thickness
- Thin plate / fine lines → 0.10-0.15mm
- General packaging printing → 0.20mm
- Long runs or rough substrates → 0.25-0.30mm
💡 Customer tip: Test with samples first, record wear and print quality, then buy in bulk for best results.