Talc Anti-Blocks for Maximized Lldpe Blown Film Performance

Evaluations were made of anti-blocking agents with two linear low density polyethylene (LLDPE) films. Diatomaceous earth (D-E) was com pared to untreated talc and coated talc regarding effectiveness as an anti-block agent and their interaction with fluorocarbon elastomer processing aids (PPA). Data showed that treated talc was slightly more effective in providing anti- block properties than the D-E. Although both talcs required higher levels of PPA than D-E to prevent melt fracture, the same levels were required of a modified PPA with treated talc as the regular PPA with D-E.