Anti-Slip Masterbatch

Description

Polyolefin films tend to adhere to themselves and metal surfaces due to their high coefficient of friction (COF). For processing ease, films need a COF near 0.2. Slip additives can modify the surface properties of a film and thus lower the friction between film layers and other surfaces. To be effective the slip needs to migrate out of the polymer to the surface and therefore it must have a degree of incompatibility with the polymer. Fatty acid amides are often used as slip additives. During processing, they are solubilized in the amorphous melt, but as the polymer cools and crystallizes the fatty acid amide is “squeezed” out forming a lubricating layer at the polymer surface. The addition of a slip additive can prevent film sticking and pulling helping to increase throughput.