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The Coating

 

“High performance non ferrous Aluminum Substrate is one thing. However applying the ultimate in multi-layer PVDF top coat systems with the most advanced EUROPEAN equipment is another…….”

 

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Aluminium Pre-treatment followed by a high build “Protec” Primer Coating.

EURAMAX based in the Netherland operate under strict EU omission standards. These standards have removed the use of chromate in the pre treatment process, instead water-based pre treatment solutions are used. A “Protec high build Primer” coating is applied after pretreatment to the Aluminium surface. The 10 micron “Protec” primer coat is used in aggressive environments before applying multilayer colour coatings in PVDF. The high build primer coat ensures maximum undercoat protective strength.

Mulit layer PVDF top coats are then applied to the primer coating, these are also environmentally friendly utilizing organic pigments instead of heavy metal for the colouring. These pigments are of high quality ensuring maximum colour retention combined with the PVDF binder for elasticity and formation provides superior longevity beyond alternative systems.

 

The “PVDF Architectural Paint” Coating Advantage

Polyvinylidene Fluoride coating (PVDF) is a pure thermoplastic Fluoropolymer that is non-reactive and possesses multiple coating benefits. Light weight with low thermal conductivity, PVDF is unaffected by most chemicals and solvents with strong resistance to acids, heat and weathering even in harsh environments. These qualities make PVDF coatings the strongest choice amongst paint solutions. Multi layer PVDF top coats applied to the primer coating are also environmentally friendly utilizing organic pigments instead of heavy metal within the colour. These pigments are of high quality ensuring maximum colour retention.

When combined with the PVDF binder elasticity and formation benefits provides superior longevity beyond alternative paint types.

PVDF vs POLYESTER (PDF)

 

Controlling Gloss levels with the use of “Lumiflon”

Lumiflon when used is an additional clear Fluoropolymer coating that can be specified to help maintain excellent appearance in gloss and colour retention. Providing outstanding dirt and scratch resistance with increased paint hardness, Lumiflon coatings can be “tuned” to provide gloss levels between 10g.u – 90g.u. The addition of Lumiflon also aids ease of cleaning and graffiti removal. (Please contact Ambro Metals Ltd for removal recommendations)

 

Multi Layer PVDF Paint Coating Technology

EURAMAX endorse the use of  the “Protec” high build primer followed by multi layer top coats. This is in reflection New Zealand’s geographical position and harsh environmental factors. 3-4 layer top coat technology in superior PVDF architectural paint coating is not a process older paint lines can accomplish easily. Multi layer PVDF paint coatings on Aluminium substrates increase a finishes life span reflected by strong warranties. EURAMAX stocked finishes are 3Layer PVDF with nominal film thickness of 45All of the above contribute to making EURAMAX pre coated Aluminium a superior architectural choice for all projects within N.Z. and the pacific.

 

Coating PAINT CONSTRUCTION

Coil Coating Diagram (ecca)

EURAMAX Finishing Standards

Finishing

Pre-treatment Front side Reverse side



		

Alkaline degreasing Conversion layer Conversion layer

Requirements of the painted surface Paintsystem Thickness Colour

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EN 13523-1 EN 13523-22

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EuraBuild 3-layer PVDF (Lum) PROTEC Depending actual color According to order Visual o.k.

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Colourmeasurement

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Gloss

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Pencil hardness Adhesion Adhesion & Impact Initial T-bend MEK resistance

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EN 13523-3

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EN 13523-2

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EN 13523-4 ETM1-053 ETM1-059 EN 13523-7 EN 13523-11

Non Metallic: DE(cmc) £ 1 (Compared to standard) According to order Tolerances on Gloss: < 05  GU.  =>  +/- 2 06 – 12   GU. =>  +/- 3 13 – 20   GU. =>  +/- 4 21 – 60   GU. =>  +/- 7 61 – 80   GU. =>  +/- 8 > 80   GU. =>  >80 GU. ³ HB £ GT1 £ GT1 T £ 1,5 > 100 double rubs

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Aesthetical properties Aesthetical view

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ETM1-109

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Smooth surface, free from contamination, according to Class B3

Reverse side Quality Thickness Code Requirements of the painted surface Colour

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Pencil hardness Adhesion Adhesion & Impact MEK resistance

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EN 13523-1

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EN 13523-22 EN 13523-4 EN 13523-6 EN 13523-6 EN 13523-11

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Backcoat (suitable for foaming and glueing) 10 µm (tolerances according EN1396) 00A0610

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Grey Visual o.k. ³ F £ GT1 £ GT1 > 25 double rubs

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ORDERING PARAMETERS FOR UNIQUE FINISHES

EuraBuild

EuraDesign

AnoMax

EuraMica

Jeweler Range

EuraZinc PRO(inland)

EuraTex(inland)

Mirror Range (interior)

AluNatur (interior)

AluDesign

Description

Uni & metallic colours

(Custom) décor finishes

Anodising colours

Sparkling mica finishes

Precious metal finishes

Weathering Zinc finishes

Textured finishes

Aluminium mirror finishes

(Semi-) transparent finishes

Digital design coating

MOQ

450m²

450m²

450m²

450m²

450m²

450m²

450m²

500m²

450m²

50m²

Thickness

0.3 – 2.0 mm

0.3 – 1.0 mm

0.3 – 2.0 mm

0.3 – 2.0 mm

0.3 – 2.0 mm

0.3 – 2.0 mm

0.3 – 1.5 mm

0.4 – 1.0 mm

0.5 – 1.5 mm

0.4 – 1.0 mm

Width

≤ 1600 mm

≤ 1600 mm

≤ 1600 mm

≤ 1600 mm

≤ 1600 mm

≤ 1600 mm

≤ 1600 mm

 1250 mm

≤ 1600 mm

≤ 2630 mm

Gloss

10 – 90 gloss units  (matt—high gloss)

0 – 90 gloss units  (full matt—high gloss)

10 – 30 gloss units  (matt—satin)

10 – 90 gloss units  (matt—high gloss)

10 – 90 gloss units  (matt—high gloss)

0 gloss units (ultra matt)

0 – 10 gloss units  (full matt)

10 – 90 gloss units  (matt—high gloss)

90 gloss units  (high gloss)

90 gloss units  (high gloss)

THE SUBSTRATE

 

EURAMAX pre painted Aluminium is the preferred choice over pre-painted steel products.

Aluminium is a non-ferrous highly corrosion resistant metal. It does not contain iron which makes alternative substrates like steel prone to rusting especially in harsh environments. Aluminium provides exceptional formability which widens the range of Architectural roofing and cladding profile choices. Along with it’s light weight advantage, up to a third in weight compared to other metals, it also provides excellent fatigue strength less and is less susceptible to warping, cracking and rusting. Aluminium has unique thermal advantages which promotes energy efficiency by maintaining a buildings ambient temperature through solar reflectance.

Made up of up to 90% recycled matter with a low melting point for coil production, Aluminum is prized as a highly sustainable and energy efficient architectural solution. 

Aluminium Chemical Composition

EURAMAX use a range of Architectural Aluminium alloys under their advanced top coat systems contributing to the superior look and performance that a EURAMAX project provides.

Alloy SI Fe Cu Mn Mg Cr Zn Ti Other each Others total Alu
3004 0.30 0.70 0.25 1.00 - 1.50 0.80 - 1.30 - - 0.25 - - 0.05 0.15 Remainder
3005 0.60 0.70 0.30 1.00 - 1.50 0.20 - 0.60 0.10 0.25 0.10 0.05 0.15 Remainder
5005 0.30 0.70 0.20 0.20 0.50 - 1.10 0.10 0.25 - - 0.05 0.15 Remainder
5052 0.25 0.40 0.10 0.10 2.20 - 2.80 0.15 - 0.35 0.10 - - 0.05 0.15 Remainder
5754 0.40 0.40 0.10 0.50 2.60 - 3.60 0.30 0.20 0.15 0.05 0.15 Remainder

EURAMAX Aluminium Substrate Test Standards

Substrate
Substrate/TemperChemical composition Aluminium according specification options listed below => "Remark Substrate"According to EN 573/3
Mechanical propertiesR m [Mpa]Rp0.2 [Mpa]A50 [%] EN 10002 After PaintingAccording EN1396According EN1396According EN1396
ThicknessTolerances EN 485/4 Thickness according to orderTolerances according EN485/4
WidthTolerances EN 485/4 Width > 800 mm.: -0,5/+2,0 mm.Width £ 800 mm.: -0,5/+0,5 mm.
FlatnessEdge wavesCentre bucklesCamber EN 485/4 According to EN 485/4d £ 6 mm. maximum d/f £ 1%d £ 6 mm. maximum d/f £ 1%max. 4 mm per 12 m (lateral bow)

Available gauge and coil widths

EURAMAX can supply pre-coated coil from 0.30mm up to 2.0mm in thickness with maximum coil width from narrow up to 2600mm wide for any project specific requirements.

 

Please view out ex stock range for available coil widths and thicknesses held at Ambro Metals.

 

External Fixing Recommendation for Aluminium Profiles—(NZ Code of Practise) “PDF”

 

Thermal expansion Coefficient

– Melting point of Aluminium: 660.3°C

– Aluminium | 0.023 (mm/m°C)

 

Theoretical Thermal Movement (mm) = ∝ x ΔT x L

Where ∝ = thermal expansion coefficient, mm/mºC

ΔT = (max temp) – (min temp) = expected temperature range, ºC

L = roof sheet length, m

Example – Light colour, insulated, steel roof, sheet length 12m

Theoretical Thermal Movement = 0.023 x (60-(-15))x12 = 12.42mm

Geographical location

In New Zealand there are areas where local conditions create an increased likelihood of corrosion. Special consideration should be given to material selection in these areas. They include:

  • 1. Geothermal Areas Hydrogen sulphide associated with geothermal activity creates a corrosive environment. Variations in natural activity or draw-off from steam bores plus the effects of weather conditions make the high risk areas hard to define.
  • 2. West Coast, South Island In this area, smoke from the coal burning fires may cause high concentrations of Sulphur dioxide in the air. The combination of this and the high rainfall for the region creates an aggressive situation which must be considered when choosing the appropriate substrate, Aluminium being the optimal choice. The effects of a severe coastal environment aggravate the situation. This area combines the most severe features of both industrial and coastal environments.
  • 3. Internal Environments Some commercial or agricultural applications may create internal environments in which the build-up of pollutants or fumes is a potential source of corrosion. Similarly a corrosive environment can develop within sheds used for intensive animal farming. Please consult Ambro Metals for further details.
  • 4. Industrial Environments close to corrosive industrial emissions and subject to heavy fallout from them. Please consult Ambro Metals for further details.