What are anti-blocking agents?

What Is an Anti-Blocking Agent? Anti-blocking agents, as the name suggests, reduces the blocking force. These agents provide a microscopic, rough barrier that minimizes the contact between adjacent plastic film surfaces.

What is blocking plastic?

Causes of blocking include residual solvents, plasticizers, and static which can promote adhesion between flexible packaging materials. ASTM D3354 quantifies the degree of blocking (unwanted adhesion) between layers of plastic film. It is not intended to measure susceptibility to blocking.

What are slip agents?

Slip additives are used to reduce friction between films and between film and converting equipment, which improves movement through extrusion lines and downstream packaging operations and enhances processing or end applications.

What type of compounds act as anti-blocking additives?

Anti-blocking additives reduce blocking at the surface of polymer films and other plastic articles to allow easier processing and handling. Traditional inorganic anti-blocking additives, such as silica or talc, work by reducing polymer to polymer contact and micro-roughening of the surface.

What are antiblock agents and what do they do?

What are Antiblock Agents? Antiblock agents, also referred to as anti-slip agents, assist in minimizing surfaces from interacting with one another either through adhesion or other forces. These materials form barriers between surface layers and modify frictional properties of the surface.

Why are antiblock additives used in film production?

The blocking between adjacent layers results in increased friction (resistance to motion), and the addition of an antiblock generally contributes to a reduction in the film-to-film coefficient of friction (COF). COF is a measure of the relative difficulty with which one surface will slide over an adjoining surface.

How are anti-slip agents used in polymers?

Adding antiblock agents / anti-slip agents resolve this by forming barriers between surface layers and modifying frictional properties of the surface. Uncover the role of antiblock agents in polymers, their types and get tips to select the right antiblock agent for elastomers, films and rubbers. What are Antiblock Agents? What are Antiblock Agents?

How are organic antiblocks used in everyday life?

Organic Organic antiblocks are migratory in nature and are thought to crystallize on the film surface, forming interfering layers between the adjacent film layers. Organic antiblocks are of interest in high clarity films and “release” applications (e.g. for rubber bales or sticky food items).