Dow introduces low density liquid silicone rubber

The silicone rubber material’s properties make it a favorable option particularly for food dosing valves, closures, dispensers, seals, gaskets, and food contact applications

Dow has announced the general availability of its first low density liquid silicone rubber (LSR) for injection molding to brand owners and formulators in Europe and North America.

The material’s properties make it a favorable option particularly for food dosing valves, closures, dispensers, seals, gaskets, and food contact applications.

“This innovative material expands Dow’s SILASTIC injection molding LSR portfolio in several key areas. It allows us to help our partners along the value chain fulfill ambitious recycling targets. The innovation at the same time enables attractive gains versus standard LSR and TPE in processing and in-use performance,” said Nathalie Gerard, European Market Manager Consumer Rubber, Dow Consumer Solutions.

In addition to its notable sustainability contribution, SILASTIC 9250-40 LSR extends Dow’s LSR portfolio on key processing and performance characteristics: White, low viscosity liquid silicone rubber helps fabricators improve the processing compared to standard LSR while utilizing established injection-molding machines; and helps brands create better performing closures and dispensers for food contact and other consumer applications.

Thanks to its high resilience, valves made with this lightweight LSR are capable of superior dispensing performance compared to existing solutions, especially for inverted packages and in food applications. SILASTIC 9250-40 LSR is formulated to meet the requirements of the BfR XV recommendation and of FDA 21 CFR 177.2600.

“The launch of this lightweight LSR is strongly aligned with Dow’s strategy to design products for circularity together with its partners in the packaging industry,” said Loriane Parisot, Global TS&D sustainability leader.