prosessointiaineiden

Prosessointiaineet, also known as processing aids, are substances added to plastics and polymers during manufacturing to improve their processing characteristics. These additives do not fundamentally alter the final properties of the plastic but rather make it easier to shape, mold, or extrude. They work by modifying the flow behavior of the molten polymer, reducing friction, or preventing degradation.

Common types of prosessointiaineet include lubricants, flow modifiers, and mold release agents. Lubricants, such as fatty acids or waxes, reduce friction between polymer chains and between the polymer melt and processing equipment. This can lower processing temperatures and pressures, leading to energy savings and reduced wear on machinery. Flow modifiers, often based on acrylic polymers or waxes, can increase the melt flow rate of a polymer, allowing for faster processing cycles and the production of more complex shapes. Mold release agents facilitate the easy removal of the finished plastic part from the mold, preventing sticking and improving surface finish.

The selection of a specific prosessointiaine depends on the type of polymer being processed, the processing method employed, and the desired outcome. Incorrectly chosen or excessive amounts of processing aids can negatively impact the mechanical properties or appearance of the final product. Therefore, careful formulation and testing are essential. Prosessointiaineet are widely used in various plastic processing industries, including packaging, automotive, and construction.