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Plastic & Composite Blades

Fiberglass (FR)

Fiberglass composite blades.

A composite material made from fiberglass for flexo doctor and containment blades on ceramic anilox rolls and abrasive inks. FR provides longer life than carbon steel metal blades with good metering quality. FR is best used with ceramic anilox rolls with <500 LPI screens.

FR is available in 20 mil thicknesses with a SLR (Seal Relief 15°) bevel.

Fiberglass Plus (FRS)

Fiberglass plug composite blade.

A composite material made from fine weave fiberglass for flexo doctor and containment blades on ceramic anilox rolls and abrasive inks. FRS provides all the features of FR and improved metering quality approaching that of metal blades. FRS can be used with any ceramic anilox.

FRS is available in 14 and 20 mil thicknesses with a SLR (Seal Relief 15°) bevel.

Graphite (GR)

Graphite composite blade.

A composite fiberglass material with added graphite lubricant to extend blade life. For flexo doctor and containment blades on larger ceramic anilox rolls, long runs, and abrasive inks. GR is commonly used for higher-end graphics in corrugated applications.

GR is available in 20, 25, and 35 mil thicknesses with a SLR (Seal Relief 15°) bevel.

Mylar (MY)

Mylar composite blade.

MY is a good choice for flexo containment blade applications since it can reduce back doctoring and allow debris to pass by the blade instead of trapping the debris behind the blade like metal blades can. To further allow debris to pass by the blade, use a blade width that is 1/16” to 1/8” wider than the doctoring blade.

MY is available in 7.5 and 14 mil thicknesses with an UNH (Unhoned) edge.

Celanex (PBT)

Celanex composite blade.

PBT is another good choice for flexo containment blade applications when you need a blade that is a little stiffer than MY.

PBT has similar characteristics to MY and is available in a 20 mil thickness with an UNH (Unhoned) edge.

Delrin (DE)

Delrin composite blade.

DE can be used in flexo doctor and containment applications that require moderate metering quality. DE provides longer life than carbon steel metal blades and can reduce cut hazards associated with metal blades in chambered applications.

DE is available in 30, 50, and 62 mil thicknesses with UNH (Unhoned), STD (Standard 20°), and SLR (Seal Relief 10°) bevels.

Delrin Plus (DET)

Delrin plus composite blade.

DET can be used in flexo doctor and containment and some gravure applications that require moderate metering quality. DET has all the properties of the DE material with added lubrication for long runs and abrasive inks.

DET is available in 30 and 35 mil thicknesses with UNH (Unhoned), STD (Standard 20°), and SLR (Seal Relief 10°) bevels.

Nylon Plus (NY)

Nylon plus composite blade.

NY can be used in special gravure applications that don’t require the wipe quality of a metal blade. The lubricant in NY can help extend the life of chrome cylinders.

NY is available in 62 and 90 mil thicknesses with UNH (Unhoned) and STD (Standard 55°) bevels.

UHMW (PE)

UHMW composite blade.

PE can be used in corrugated and flexo doctoring applications that have coarse anilox rolls and don’t require the wipe quality of a metal blade as well as flexo containment blades. Since PE material is soft, use with caution because there is a risk of particle embedment that could lead to roll damage.

PE is available in 15, 30, 50, 62, 80, and 90 mil thicknesses with UNH (Unhoned), STD (Standard 45°), and S30 (Standard 30°) bevels.

Edge Shapes

Standard (STD)

Composite blade standard edge shape.

A plastic beveled edge shape with a nominal 20° - 55° bevel angle depending on material. Provides good tip support and wiping characteristics.

Seal Relief (SLR)

Composite blade seal relief edge shape.

A plastic or composite material beveled edge shape with a nominal 10° to 15° bevel angle, depending on material. Long bevel profile to help reduce ink leakage past the flexo chamber end seals.

Unhoned (UNH)

Composite blade unhoned edge shape.

An unhoned plastic blade has a square edge and is typically used for flexo chamber containment blade applications and limited use as flexo doctor blades on low line screen corrugated anilox rolls.

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