BACKFILLING COMPOUNDS FOR COMPACT MOULDS ALWA MOULD D Our backfilling compounds for compact moulds are suitable for RTM pressure injections and foam moulds: Advantages: • Large volumes of more than 2500 kg can be cast in less than 45 min. • Good castability • Hardly measurable linear shrinkage • High temperature resistance • Demoulding process after approx. 90 min. (after adding the backfilling compound) • Chemical adhesion to polyester or vinylester gelcoat • Immediately after the first mould half has cooled down, the second mould half can be prepared • Copper pipes keep the mould surface on a nearly constant temperature • Post-curing is not necessary ALWA MOULD D backfilling compounds are the fastest system on the market. Foam moulds RTM pressure injections Surfaces of: Epoxy gelcoat (ALWA EPF 10) (fastest surface system) Vinylester gelcoat (ALWA MOULD COAT) Polyester gelcoat (ALWA UP GELCOAT) Metal spray surface layer (zinc) Galvano For example, suitable for: - Polyurethane (PU) foam injection - Resin injection moulds - Reaction injection moulding (RIM) / Structural reaction injection moulding (SRIM) - PU reaction injection moulding - PU integral foam moulds_ ALWA Technische Produkte fur Kunststoffverarbeitung, Modell- und Formbau GmbH

Surfaces of: Polyester gelcoat (ALWA UP GELCOAT) Vinylester gelcoat (ALWA MOULD COAT) ^polishable on high gloss If it is not a visible component, an epoxy gelcoat surface (ALWA EPF 10) can also be used. Specific advantages for RTM pressure injection Approx. 70 - 100 demouldings per release agent layer can be realised by using Frekote 700 NC. PU flexible foam moulds Glass fibre mat reinforced thermoplastics (GMT) and fibre reinforced polymer (FRP) for prototypes and small series Cold and hot pressure moulds up to 130 °C Specific advantages for backfilling Surfaces as required (different gelcoat...