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Metal Doctor Blades

White (CX)

White doctor blade.

The most common carbon steel blade material is high quality steel with economical life and excellent metallurgical properties.  CX has a bright, polished metallic appearance and can be used in all gravure and flexo doctoring and containment applications.

CX is available in 6, 8, and 10 mil thicknesses with RND (Rounded), STD (Standard), and SUP (Superhoned®) bevels.  Other options may be available.

Blue (CB)

Blue doctor blade.

This is CX material with a blue oxide layer that helps to identify the beveled edge. CB can be used everywhere CX is used.

CB is available in 4, 6, 8, 10, 12, 15, 18, and 20 mil thicknesses with UNH (Unhoned), RND (Rounded), STD (Standard), and SUP (Superhoned®) bevels. Not all bevels are available in all thicknesses and other options may be available.

Silver (CSV)

Silver doctor blade.

A carbon steel blade material with enhanced chemical composition to provide a microstructure with more and finer carbides compared to CX material. The result is better wear resistance leading to longer blade life. CSV also has increased levels of chromium which enhances corrosion resistance when used with water based inks. CSV has a bright, polished metallic appearance and can be used in all gravure and flexo doctoring and containment applications.

CSV is available in 8 mil thickness with RND (Rounded), STD (Standard), and SUP (Superhoned®) bevels. Other options may be available.

Stainless (SS)

Stainless doctor blade.

All of the quality properties of CX material with the added corrosion resistance of stainless steel needed for certain applications. SS has a bright, polished metallic appearance and can be used in all gravure and flexo doctoring and containment applications.

SS is available in 6, 8, 10, 12, and 15 mil thicknesses with RND (Rounded), STD (Standard), and SUP (Superhoned®) bevels. Not all bevels are available in all thicknesses and other options may be available.

Gold (QR)

Gold doctor blade.

Special tool steel metallurgy with very long life that is excellent for abrasive inks. QR material can also help reduce roll scoring issues because, as it normally wears, it produces smaller particles then other materials that that can easily be flushed away from the blade instead of getting trapped between the blade and cylinder. QR has a gold metallic appearance and can be used in gravure and flexo doctoring and containment applications with both chrome and ceramic rolls.

QR is available in 6, 8, 10, and 12 mil thicknesses with RND (Rounded), STD (Standard), and SUP (Superhoned®) bevels. Not all bevels are available in all thicknesses.

Laser Gold (QRH)

Laser gold doctor blade.

Our Gold material, QR, with an added laser hardened tip for high wear applications. QRH is proven to last 5 to 10 times longer than CX material and can help reduce spitting problems with UV inks. QRH has a gold metallic appearance with a lightly colored stripe on the working edge and is mainly used in flexo doctoring applications with ceramic anilox rolls. Gravure customers who are running ceramic rolls can also use QRH but this material cannot be used on chrome cylinders.

QRH is available in 6, 8, 10, 12, and 20 mil thicknesses with RND (Rounded) and STD (Standard) bevels. Not all bevels are available in all thicknesses.

White Plus (CXP4)

White plus doctor blade.

White carbon steel material, CX, with a precision low-friction metallic coating for difficult Flexo and Gravure doctoring applications. This material is not recommended to be used in Flexo containment applications. CXP4 is beneficial when running chrome gravure cylinders with minimal engraving since the coating helps to provide lubrication between the blade and cylinder and reduce haze and streaking issues. The coating will also provide corrosion resistance when used with water-based inks.

CXP4 is available in 8 mil thickness with SUS (Superhoned® Plus) bevel.

Gold Plus (QRP4)

Gold plus doctor blade.

Special tool steel metallurgy with very long life, QR, and a precision low-friction metallic coating for difficult Flexo and Gravure applications. This material is not recommended to be used in Flexo containment applications. QRP4 is beneficial when running chrome gravure cylinders with minimal engraving since the coating helps to provide lubrication between the blade and cylinder and reduce haze and streaking issues. The coating will also provide corrosion resistance when used with water-based inks.

QRP4 is available in 6 and 8 mil thicknesses with SUS (Superhoned® Plus) bevel.

Edge Shapes

Standard (STD)

Doctor blade standard edge shape.

A beveled edge shape with a nominal 15° bevel angle.

Some inks or cylinder conditions require the more rigid tip for maximum cylinder clean-up that the Standard bevel provides. The thin initial tip of the Standard bevel will provide quick startups and works well for short run work.

Superhoned® (SUP)

Doctor blade superhoned edge shape.

A beveled edge shape with a nominal 4.5° bevel angle. The long bevel provides effective tip deflection and contact angle control under applied blade loading forces with minimal tip growth as the blade wears

Superhoned® Plus (SUS)

Doctor blade superhoned plus edge shape.

A beveled edge shape with a nominal 2.2° bevel angle. The very long bevel provides the same force control features of the Superhoned® shape with even less tip growth as the blade wears.

Rounded (RND)

Doctor blade rounded edge shape.

A rounded edge blade offers a strong, rigid, precision polished working edge that is not easily damaged at an economical price. The rounded edge shape is suitable for lower screen ceramic anilox rolls (generally <500 lpi), very abrasive inks, or where maximum anilox clean-up is not required. Rounded edge blades are typically not recommended for gravure applications.

Unhoned (UNH)

Doctor blade unhoned edge shape.

An unhoned blade has a square edge and is typically used only for backer blade applications.

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