Esa Red

The only Atex certified, explosion-proof elastomer in the world

  • E.S.A. System | products | Rossini s.p.a.
    E.S.A. System
  • ATEX certified | products | Rossini s.p.a.
    ATEX certified
  • max temp 150°C | products | Rossini s.p.a.
    max temp 150°C
  • explosion prevention | products | Rossini s.p.a.
    explosion prevention
  • ionising remove | products | Rossini s.p.a.
    ionising remove
  • PTB Norm compliant | products | Rossini s.p.a.
    PTB Norm compliant
  • antistatic sleeve | products | Rossini s.p.a.
    antistatic sleeve
  • Speedwell System | products | Rossini s.p.a.
    Speedwell System
  • hardness range 75-90 | products | Rossini s.p.a.
    hardness range 75-90

Elastomer designed for printing impression rollers with electrostatic assist (ESA) for printing on plastic film and paper. Esa Red eliminates the ionization effect typical of traditional black rubber compounds with carbon black. The only product certified in compliance with the ATEX Ex II 2G IIA T4 standard for use in Zone 1 issued as a non-flammable elastomer. The volumetric resistance, dynamic resistance and insulation values of ESA Red comply with the electrostatic assist system installed on the printing press and the type of application (Direct Charge, Top Loading and/or Side-Loading).

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

Colour
Red
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
75 - 90 Shore A
Maximum resistance to pressure
15 [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
150 °C / 302 °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
Alcohol - Acetates max 30% - Water - Ozone