Extrusionsgranulering

Extrusionsgranulering is a manufacturing process used to produce granular materials with a uniform size and shape. In this method, a melt or paste is forced through a die with multiple small openings, creating long strands or spaghetti-like extrudates. These extrudates are then cut or broken into smaller pieces to form granules. The process is commonly employed in the production of pharmaceuticals, fertilizers, detergents, and some food products.

The primary advantage of extrusionsgranulering is its ability to control the particle size and distribution of the final product. By adjusting factors such as the die design, extrusion pressure, and cutting mechanism, manufacturers can achieve precise granule specifications. This uniformity is crucial for applications requiring consistent flowability, compressibility, and dissolution rates. Furthermore, the process can often be performed at lower temperatures compared to other granulation methods, which is beneficial for heat-sensitive materials.

The equipment used in extrusionsgranulering typically includes an extruder, a die plate, and a cutting device. The extruder pushes the material through the die. The die plate contains numerous holes of a specific diameter. The cutting device, which can be a rotating knife or a breaking mechanism, severs the extruded strands into granules of the desired length. The resulting granules can then undergo further processing, such as drying or coating, depending on the end application. This method offers a reliable way to create well-defined particles for a variety of industrial uses.