Sisäsekoittimiin

Sisäsekoittimiin is a Finnish term that translates to "internal mixers" or "internal kneaders." These are specialized industrial machines used for mixing and processing a wide variety of materials, particularly rubber, plastics, and other polymers. The primary function of an internal mixer is to homogenize, plasticize, and compound raw materials with additives to achieve specific properties in the final product.

The core of an internal mixer consists of a mixing chamber and two rotors that rotate in opposite directions. These rotors have specific shapes, such as tangential or intermeshing, which are designed to effectively shear and mix the material. As the rotors turn, they create a powerful kneading and tearing action that breaks down lumps, disperses fillers and other ingredients, and generates heat through friction, which is crucial for the vulcanization process of rubber.

Internal mixers are favored for their efficiency and ability to process large batches of material in a closed system. This controlled environment helps maintain consistent mixing quality, prevents material loss, and reduces exposure to hazardous fumes or dust. They are essential in industries manufacturing tires, hoses, belts, seals, and various molded rubber and plastic components. The design and operational parameters of an internal mixer can be adjusted to suit the specific rheological properties of the materials being processed and the desired outcome of the mixing cycle.