antiblokkausjarrutusjärjestelmät

Antiblokking is a chemical additive used in plastics manufacturing. Its primary function is to prevent plastic films or sheets from sticking together during processing and storage. This sticking, often referred to as blocking, can occur due to surface friction, heat, or pressure. Antiblokking agents work by creating a thin, microscopic layer on the surface of the plastic. This layer is typically composed of fine inorganic particles, such as silica, talc, or calcium carbonate. These particles act as physical separators, reducing the contact area between adjacent plastic surfaces.

The effectiveness of an antiblokking agent depends on several factors, including the particle size, shape, and concentration. Smaller particles generally provide better antiblocking performance but can also lead to increased haze in transparent plastics. Larger particles may be more prone to settling or migration. The concentration of the antiblokking agent must be carefully controlled; too little may not provide adequate protection, while too much can negatively impact the plastic's optical properties or mechanical strength.

Antiblokking agents are widely used in various plastic applications, including food packaging films, industrial bags, and agricultural films. They are crucial for ensuring that these products can be easily handled, opened, and processed without damage. The choice of antiblokking agent is often tailored to the specific polymer type and the intended application, considering factors like regulatory compliance (especially for food contact materials) and desired surface finish.