Specialists in Lacquering Aluminium Coils

airfin®

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airfin-introairfin® is lacquered foil to be used for the production of fins for heat exchangers with a high corrosion resistance.

airfin® is an excellent solution of coating against corrosion of the fin. Epoxy resins based on highly specific to this application, airfin® provides the desired protection in a wide range of colours.

Its advantages are:

  • The polymers with high degree of reticulation aluminum lining prevent aggressive agents come in touch with the metal, they themselves being very resistant to corrosion: the airfin® fins are at least 300% more resistant to corrosion than bare aluminum.
  • Very good finishing, high thermal conductivity, good drawability and low density.
  • Collars height up to 12 mm could be obtained.
  • airfin® finishing have been developed to have highest possible resistance to scratches.
  • Studies performed by specialized independent organisms demonstrate that  airfin® does not favour the growth of micro-organisms.
  • We offer the posibility to incorporote the pre-treatment Alucoat® prelac improving corrosion protection and the adherence of the lacquer over the aluminium surface.

Range of products

  • airfin® 100: is an excellent solution of coating against corrosion of the fin. This product offers the desired protection in a wide range of colour.
  • airfin® 300: Chemical decomposition of many polymers can come catalyzed UV. Ensures their properties airfin® without fear of the aging by UV. The chemical decomposition of many polymers is catalyzed by the UV rays, all their properties unaffected by other side-reactions.
  • airfin® 400: Lacquered foil to be used for the production of fins for heat exchangers with a high corrosion resistance. The polymers with high degree of reticulation aluminum lining prevent aggressive agents come in touch with the metal, they themselves being very resistant to corrosion: the airfin® fins are at least 300% more resistant to corrosion than bare aluminum.
  • airfin® 500: ALL IN ONE. Demand the quality airfin® 500 to strengthen the corrosion resistance and ensure a lengthening of the life of its exchanger. Can adapt to any environment. Moreover  for all range of products an alternative with a pre-treatment coating is available that increases the corrosion resistance of the standard products.

Composition

bobina-airfin-mini

Applications

ALUCOAT supplies its product airfin® in reels of wide until 1.600 mm, with core of steel or carboard up to 500 mm and maximum weight of 6 tonnes. The lacquered aluminim coils airfin® are ideal for developing different applications:

  • Heat exchangers for food industry.
  • Heating and air conditioning systems for buildings.
  • Heat exchangers for cars, ships and airplanes.

Tecnical Data

Product description: Aluminium foil from 100 to 300 μm with epoxy based lacquer, PU based lacquer, or EPPU double layer for both sides.

Coating properties:

PROPERTY METHOD airfin® 100 airfin® 300 airfin® 400 airfin® 500
Nature EPOXY PU PET EPPU
Colors gold, grey, black blue, grey gold, grey gold, black
Wettability  UNE EN 546-4 E E E E
Adherence  ASTM D-3359 O.K. O.K. O.K. O.K.
Bending  ECCA 7 (0 ≤ T BEND ≤ 1) O.K. O.K. O.K. O.K.
Drawing  ECCA T6-ISO 1520  (5mm) O.K. O.K. O.K. O.K.
Curing  Resistance to MEK > 50 d.f. > 50 d.f. > 50 d.f. > 50 d.f.
Heat resistance  200ºC/5 min. O.K. O.K. O.K. O.K.
Solvent resistance TRICHLOROETHYLENE (85ºC/5 min.) Weight loss < 1% PWeight loss < 1% Weight loss < 1% Weight loss < 1%
PERCHLOROETHYLENE (120ºC/30 min.) Weight loss < 1% Weight loss < 1% Weight loss < 1% Weight loss < 1%
Corrosion resistance (Neutral salt spray)  ASTM B117 (NaCl 5%/35ºC) Up to 1000 h (According to specification) Up to 1000 h (According to specification) Up to 1000 h (According to specificationn > 1.000 h.
Kesternich Test Resistance ISO 3231 (0.2 l SO2) Up to 15 cycles (According to specification) Up to 15 cycles (According to specification) Up to 15 cycles (According to specification) > 15 cycles
Humidity test DIN 50017 / 1000 h No modification, no corrosion No modification, no corrosion No modification, no corrosion No modification, no corrosion
U.V. Resistance  ASTM G154 (500 h.;UV-313 4h. 60ºC / Condensation 4h. 40ºC)  – O.K. O.K. O.K.

Recommended alloys: EN AW 8011A, EN AW 8006, EN AW 1100 (according to European Standards (EN 573-3)). Customer can specifiy its needs in order to choose the best thickness, alloy and temper of the metal.

Product Data Sheet: pdf