DOCTOR BLADES

WHY A 1st CLASS BLADE

 

METALLURGICAL STRUCTURE & CARBIDE DISPERSION

 

Uniform & slow blade wear depend on:

 

  • Pure chemical composition

  • Small sizes of carbides

  • High density (no porosity)

  • Lack of non-metallic inclusions

  • Fine carbide dispersion through steel section

  • Undifferentiated metallurgical structure

 

 

 

Tip Designs of CBG Doctor Blades In The Philippines

The Doctor Blade meters the amount of liquid ink of a rotogravure or flexographic printing machine by wiping the cylinder surface of excess ink while the printing cylinder rotates.

A rotogravure printing press typically has 8 to 10 printing units or stations. Each of which has its own printing cylinder and doctor blade. The doctor blade material is typically special carbon steel heat treated for wear resistance. The printing cylinder bearing the image to be printed is made of a steel core that is copper plated. The cylinder is etched with microscopic cells shaped like inverted pyramids that form the image. After engraving, the copper is hard-chrome plated for wear resistance. The doctor blade steel material hardness should allow the doctor blade to wear out first before the expensive cylinder. Doctor blades may last from a few hours to several days. Many factors affect the service life of doctor blades. The ink type & color, the cylinder surface affect doctor blade service life. Doctor blade angles and pressures on the cylinder and even cylinder life affects the life span of the doctor blade and the cylinder.

  • MIRROR-LIKE finishing of edge surface

  • EXTREME SMOOTHNESS of the edge

  • SUPERIOR  ink doctoring

  • AVAILABLE under any profile (WING, SC, TMC, N)

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