Green ESA PU

Coating for printing impression rollers with electrostatic assistance

  • E.S.A. System
    E.S.A. System
  • hardness range 80-95
    hardness range 80-95
  • max load 50 [Kg/cm]
    max load 50 [Kg/cm]
  • max temp 90°C
    max temp 90°C
  • PTB Norm compliant
    PTB Norm compliant
  • Speedwell System
    Speedwell System

Technopolymer to coat printing impression rollers for ESA printing. Indicated for printing on high grammage paper, cardboard and fake wood (high mechanical load and resistance to abrasion) with water, alcohol or max 30% acetate base inks.

Rubber-coated roller with steel core and/or Speedwell sleeve with conductive or non-conductive fibreglass conical base. Electrolast PU coating ground to measurement.

Colour
Black
Rubber-coated roller - Min/Max diameter
35 - 550 [mm] // 1.373 - 21.569"
Rubber-coated roller - Min/Max length including pins
150 - 5.000 [mm] // 5.882 - 196.078"
Speedwell Sleeve - Min/Max diameter
80 - 450 [mm] // 3.137 - 17.647"
Speedwell Sleeve - Min/Max length - Tolerance UNI:ISO 2768T1m
350 - 3500 [mm] // 13.725" - 137.255"
Coating thickness
10 - 35 [mm] // 0.392 - 1.373"
Min coating thickness to guarantee after grinding
8 [mm] // 0.315" - Grinding value at a minimum must be supplied by the client based on the possible adjustment of the printing press
Surface hardness - Tolerance +/-3 Shore A
80 - 95 Shore A
Maximum resistance to pressure
50 [Kg/cm]
Electrical resistance
Rollers and Speedwell Sleeves are designed and built according to technical specifications released by the manufacturers of ESA systems and the type of application of the electrostatic charge (Top Loading - Side Loading - Direct Charge)
Compressed air for sleeve assembly
12 - 20 [bar] // 174 - 290 PSI Minimum capacity: 700 [l//min] with air input having a free passage with D => 8[mm]
Maximum temperature resistance
90 °C / 194 °F
Working tolerance
External finishing with precision grinding (Ra=0.8) with T.I.R. < 0.03 mm] when measured on a mandrel with T.I.R. <= 0.005 [mm]
Resistance to chemicals
Gasolines - Water - Isocyanate - Ozone
Cleaning Procedure
Use gasoline or with a blend of 80% Ethyl alcool and 20% ethyl Acetate. Dry the surface before stocking.