Ekolak E/P semi gloss

semi-gloss (E/P-01-3-xxxxx),
semi-matt (E/P-01-4-xxxxx),
matt (E/P-01-5-xxxxx), and
Ekolak coatings with average mechanical properties (E/P-04-1-xxxxx)

General information:

  • Base: binding on the basis of saturated polyester resins and epoxy resin, specially selected according to their good chemical resistance and the resistance to discolouring (becoming yellowish) in the stoving process.
  • Colour shade: according to RAL-card or according to the sample.
  • Packaging: 25 kg cartons or big-bags of 500 kg.

Powder properties:

  • Density (DIN 55 990/3): 1,2 to 1,7 g/cm3, depending upon the shade.
  • Yield: 9,8 to 13,8 m2/kg at coat thickness of 60 µm, depending on the shade.
  • Granulation (DIN 55 990/2, vacuum sieve): remainings at the 40 µm sieve......40-55 %.
  • Method of application:  traditional CORONA procedure, negative voltage 30-100 kV, possible supply of powder adequate for TRIBO system of application.
  • Stoving conditions: 190 °C/10 min, object temperature for matt, semi-matt and semi-gloss quality, and 180 °C/10 min for E/P-04-1-xxxxx.
  • Storage time: 12 months at the temperature below 25 °C.

Mechanical and technological features of the Epoxy/Polyester Ekolak:

To determine its mechanical properties the Ekolak was applied to the 0,6 mm thick cold-rolled metal sheet degreased with acetone, and stoved in the oven at the temperature of 190 °C for 10 min, i.e. it was submitted to the conditions, required for the particular type of the Ekolak.

  • Coat thickness: 55-80 µm
  • Gloss (DIN 67 530, ISO 2813): 10-90% at the angle of 60°
  • Hardness on Bucholz scale (DIN 53 153): minimum 91
  • T-bend: minimum T3-OK/OK
  • Impact test (DIN 55 669): direct: minimum 50 cm x kg
                                               indirect: minimum 50 cm x kg
  • Adhesion (DIN 53 151): Gt 0

Chemical resistance and resistance to household stains:

Plates with applied Ekolak coating were exposed to the reactive agent for 48 hours, then cleaned. The surface of the coating was scrutinized according to the modifications.

Reactive agent Modification
HCl 10 % Coating unchanged
H2S Coating unchanged
Ethanol Coating unchanged
Ammonia 10 % Coating unchanged
NaOH 10% Coating unchanged
Wine acid 5 % Coating unchanged
Lactic acid 5 % Coating unchanged
Hydrogen peroxide Coating unchanged
Car petrol Coating unchanged
Aceton Coating softened, peels off the surface
Vegetables oil Coating unchanged
Red wine Coating unchanged
Sodium 5 % solution Coating unchanged
Coffee Coating unchanged
Cleaning agent – Cet Coating unchanged
Detergent 10 % solution Coating unchanged

 

These instructions are the result of years of research and testing in our laboratories. We may not assume responsibility for the results of your work due to the different methods of work and application of different materials. We reserve the right to any alterations and improvements we may find appropriate.