Community Research and Development Information Service - CORDIS


Final report on Contract No 7210-PR/117, 1 July 1998 to 31 December 2001.

The goal of this project was to develop new multiplayer coil coatings which are superior to the currently available products by combining conventional and novel coatings and application techniques. Improved mechanical properties and durability can be achieved by the development of high-quality three-layer-thick film coatings. Depending on the position of the additional intermediate organic layer, it will serve as a corrosion inhibitor, a barrier for gases, vapours or chemicals, or as a top- or clear coat for excellent weatherability and mechanical durability.

Several UV-and EB-curable formulations and hot melt systems were tested and their curing response analysed. The best systems were selected for final testing. Both HDG and Galfan substrates were used. Three UV- and one EB-curable midcoats and white and black polyester topcoats were applied on chromate-free and chromate-containing polyester primers.

Although all targets for mechanical properties were not met, a clear improvement compared to the reference systems was observed in the overall performance. Also, the corrosion protection was enhanced, especially in the case of scribe down to zinc. Galfan generally had a considerably better performance than conventional zinc coating. The improved corrosion behaviour of the multiplayer systems was also evident on the basis of the EIS results. The selected systems did not show any interference with the performance of the topcoat in QUV testing.

Additional information

Authors: FAGERHOLM H, Rautaruukki Steel, Hämeenlinna (FI);RANTA-ESKOLA A, Rautaruukki Steel, Hämeenlinna (FI);HAUTALA M, Rautaruukki Steel, Hämeenlinna (FI);FILHAUT C, Thyssen Krupp Stahl, Dortmund (DE);SUNDELL P-E, SSAB Tunnplåt, Borlänge (SE);FERREIRA M, Instituto Superior Técnico, Lisbon (PT)
Bibliographic Reference: EUR 20508 EN (2002), pp.145. Euro: 22.00
Availability: EUR-OP reference: KI-NA-20508-EN-C Available from EUR-OP sales agents URL:
ISBN: ISBN: 92-894-4487-8
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