METAL DECORATION BY DECORAL® TECHNOLOGY SUPERDURABLE WOOD GRAIN

Alessandro Canevarolo

Bologna, 19 maggio 2011

Wood Grain - Comparative test

Sublimation Process (Heat transfer)on coated metal surface

Wood Effect

200°C

Aluminum

Powder coating layer

Sublimatic ink support

Sublimatic ink (dyes)

Sublimation Process (Heat Transfer)

Phisical process by which some substances at given temperature move directly from solid to gas status.

Aluminium

Powder coating layer

Sublimatic ink substrate

Printed Sublimatic ink (dyes)

Used Raw Materials

- Polyurethane Powder Coating

- Heat Transfer Film (printed with sublimatic Ink)

High print definition

Sublimation Process Advantage

Sublimation Process Advantage

Suitable to be applied to different shapes

Wood Grain Comparative tests

Wood Grain on Superdurable PUR Powder

Wood Grain on Standard PUR Powder

vs

Series DS 04XX S & Series DS 07XX S

New formulation of powder coating including:

- special resins

- special combination of UV inibhitors

Superdurable Polyurethane Powder

- Powder coating, carried out in compliance with TDS temperature and time (20'@ 200°C)

Samples Preparation

- Decoration according to sublimatic film TDS (peak temperature 200°C)

Powder Coating + Decoral Process

- A1, B1, �, N1 serie made by Superdurable powdercoating (green line)

Obtained Samples

- A2, B2, �, N2 serie made by Standard powdercoating (red line)

Two series of samples

Tests

Accelerated Weathering Test � AWT

- Decoral Laboratory- Controlled and repeatable- simulation of some natural exposure factor- 3000 hours duration

Natural Exposure Test � NET

- South Florida (AWSG)- Real enviroment- Unpredictable test- 12 months exposure

ISO 11304

- irradiation, 550 ± 20 W / m 2 (290-800 nm)- black panel temperature, 65 ± 5 ° C- wet cycle 18 minutes- dry cycle 102 minutes.

Accelerated Weathering Test

Decoral Laboratory

Accelerated Weathering Test

Evaluated Parameter

every 100 hours until 3000 hours

- Residual gloss % (60° angle, ISO 2813)

- Colour Variation (ΔE CIELAB, ISO 7724/3)

AWT � Residual Gloss%

Remarks: 3000 hours are 3 times minimum required by international specification

AWT � Residual Gloss%

Remarks: 3000 hours are 3 times minimum required by international specification

- Residual gloss % of Superdurable wood grain > 80% @ 3000 Hours

Superdurable serie (DS 07XX S)

- Residual gloss % of Standard wood grain > 50% @ 1000 Hours

AWT � Colour Variation

Remarks: 3000 hours are 3 times minimum required by international specification

AWT � Colour Variation

Remarks: 3000 hours are 3 times minimum required by international specification

- ΔE of Superdurable wood grain < 2 @ 3000 Hours (all pattern!)

Superdurable series (DS 07XX S)

- ΔE of Standard wood grain < 2 @ 1000 Hours

AWT � Tested Samples � 3000 h

Remarks: 3000 hours are 3 times minimum required by international specification

TestedSamples

D1(superdurable wood grain)

D2(standard wood grain)

AWT � Tested Samples � 3000 h

Remarks: 3000 hours are 3 times minimum required by international specification

TestedSamples

I1(superdurable wood grain)

I2(standard wood grain)

Natural Exposure Test

ATLAS

Weathering Service Site

ISO 2813

- - south Florida site- - 12 months exposure - facing south - tilt angle 5° - open backing

Natural Exposure Test � 12 months

Evaluated Parameters

(after 12 months exposure & cleaning process)

- Residual gloss % (60° angle, ISO 2813)

- Colour Variation (ΔE CIELAB, ISO 7724/3)

NET � Residual Gloss%

NET � Residual Gloss%

- Residual gloss % of Superdurable wood grain > 90% after 12 monthsexposure

- Residual gloss % of Standard wood grain > 50% after 12 monthsexposure

NET � Colour Variation

NET � Colour Variation

- ΔE of Superdurable wood grain < 2 after 12 months exposure (allpattern!)

NET � Exposed Samples � 12 months

Unexposedpart

D1(superdurable wood grain)

D2(standard wood grain)

NET � Exposed Samples � 12 months

Unexposedpart

I1(superdurable wood grain)

I2(standard wood grain)

Conclusions

- Excellent results are linked to a new formulation experience

- Superdurable series (DS 04XX S & DS 07XX S) levels up the weathering resistance

- Performance improvement for a wide rangeof finishing (different wood grain)

Future

- Expand the exisiting market for heat-transfer technology

- Open new fields of application

- Complying with more strict requirements

www.decoral-system.com

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