New antiblocking agents for high clarity polymer films

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  • SPHERILEX® 60 AB was developed for blown and cast film produced from polyolefins and polyesters.
  • SPHERILEX® 30 AB is specially designed for very thin films such as biaxially oriented film applications.

Evonik has introduced two new grades of precipitated silica for use as antiblocking agents: SPHERILEX® 60 AB and SPHERILEX® 30 AB.


Antiblocking agents are essential additives in the production of plastic films. These additives help facilitate film winding operations and improve the handling properties of films during subsequent pro¬cessing.

Both SPHERILEX® grades are produced using a new, patented manufacturing process that simultaneously allows spherical particle shape, controlled particle size, and narrow particle size distribution to be achieved. SPHERILEX® 60 AB was developed for standard films based on PE and PP, whereas SPHERILEX® 30 AB is specially designed for very thin films such as biaxially oriented films.

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