The sample shows the different effects of the additive with specific machine parameters.
Grafe Advanced Polymers of Germany has developed a process aid additive, nicknamed ‘flow improver’ to make more efficient use of resources and boost profitability.
Through the positive effect that the additive has on crystallisation properties, temperatures and cycle times can be substantially reduced, Grafe claims.
The group states that reductions in machine temperature of around 30% are possible, which naturally cuts direct energy costs. In addition, less external heat is generated, which improves working conditions around the machine. Grafe is saying that this is a benefit because it means that the machine can be re-started more quickly after down-time or set-up. The accelerated crystallisation ensures faster cooling of the component and so permits cycle time to be optimised.
The additive masterbatch can be used on all current machines and is suitable for injection moulding, extrusion, and blow moulding. It is added during the process, generally at a rate of about 3-5%. It can also be combined with dyes in a masterbatch. The product can be tailored to meet the specification of the end product.
Lower energy consumption and faster cycles have a direct influence on the cost structure and contribution margin for packaging applications. Grafe believes that the resulting unit cost optimisation allows producers to adjust their price policy individually to meet the requirements of the market, adding a competitive advantage.