RUBBER

THE NEW FRONTIERS FOR RUBBER

Continuous systems: constant quality and energy saving

The use of co-rotating twin-screw extruders allows us to propose continuous systems in the production process of rubber compounding. A valid and cheaper alternative to the batch process.

Simplicity, complete automation, reproducibility, energy saving. The compounding continuous process proposed by MARIS offers many advantages.

Constant quality and reproducibility - The main strength of the use of the continuous system is the constancy and material quality reproducibility. The extruder, also thanks to the gravimetric feeders which constantly feed it, grants the process stability, as shown in the example, allowing interventions to correct eventual differences and improving then the product additional value.

High energy saving – An important aspect is linked to the energy consumption. These values, depending on the type of processed compound, are 50 to 70% lower with respect to the batch systems.

The know-how strength

The continuous systems that we provide offer a viable solution to batch system problems. In fact, our company know-how allows to:

- increase the range of materials which can be processed

- optimise the feeding technology for all blend components and their introduction sequence

- obtain very high dispersion levels thanks to optimising screw profiles and process parameters

- define the process layout according to the different products that are required, thanks to the modular and flexible extruder systems.

The continuous process has just one need: the main ingredient, the rubber (generally in bales form) has to be free flowing through its grinding in a mill, obtaining a sizing that can be fed into the extruder.

We propose two types of continuous processes:

Two-stages

with two extruders, which allows a greater production flexibility. With the first extruder a rubber, fillers and plasticizers masterbatch is produced, that is granulated and fed together with the vulcanizing agents into the second extruder.

One-step

which offers economic advantages, both in terms of starting investment and space, energy consumptions (a 70% saving compared to traditional systems) and process simplicity.