You are here

High surface quality RTM for immediate painting

News International-French

6 Mar 2014

JEC Europe 2014 - KraussMaffei has now succeeded in producing composite components with a surface quality suitable for immediate painting in a fully automated process.

Until now, composites have been very rarely used for exterior components in vehicle production, as the required post-treatment of the surface for subsequent painting was too time-consuming and had to be performed manually. With the strong support of Henkel and further partners, KraussMaffei – a manufacturer of machines for plastics manufacturing and processing – has now succeeded in producing composite components with a surface quality suitable for immediate painting in a fully automated process. This has become possible thanks to the development of Loctite Max 3, a 3-component polyurethane-based matrix resin system from Henkel that contains not only the resin and hardener but also a high-performance internal release agent matched to a self-releasing polyurethane lacquer from Ruehl Puromer GmbH.

This polyurethane-based matrix resin technology is characterized by significantly faster curing compared to the epoxy resins usually used for the RTM (resin transfer moulding) process. Due to its low viscosity, the resin penetrates the fibre material more easily and with less disruption, giving rise to shorter injection and curing times and thus short cycle times in series production.

With the internal release agent ensuring easy detachment of the component from its mould, the resulting surface is of such high quality to allow immediate painting and bonding. This accelerates the production process and allows the mass manufacturing of automotive exterior components.

More information: www.henkel.com
Booth: F17