MOSCOW (MRC) -- For automotive exterior applications with wide flow paths and exceptionally challenging weathering requirements, thermoplastics elastomer manufacturer Kraiburg TPE (Waldkraiburg/Germany) has developed a new class of compounds within the Thermolast K family: High-flow compounds, as per GV.
Kraiburg TPE carried out flow length tests using a spiral flow test and obtained a flow path up to 30 % longer in comparison to standard materials. For window overmoulding in particular, the internal mould pressure is almost halved.
This allows, together with the lower melt temperature, a 20 % shorter cycle time. The level of force applied in the filling process has been reduced, which allows even thinner panes of glass or laminated panes to be overmoulded. This also significantly reduces the risk of the glass breaking. Even applications with extremely long flow paths such as the encapsulation of a rear window or a roof module can now be realised with a TPS.
As other Thermolast K materials the high flow grades withstand Florida and Kalahari tests, which simulate two- to three-year cycles, without any problems.
As MRC reported earlier, in 2012, Kraiburg TPE launched two new TPE product ranges in Europe. The "Copec" and "For-Tec E" ranges had already been successfully launched in the USA, and the company hoped to replicate that success in Europe. The products, which were designed for use in consumer sectors, have superior haptic and adhesion properties and are resistant to influences such as sweat, alcohol and weather.
MRC