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.
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References
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Blong, T.J. and D. Duchesne.1989. "Effects of Antiblock/Processing Aid Combinations on LLDPE Blown Film Extrusion", J Plas. Film. & Shtg., 5:308.
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Johnson, B.V. and J.M. Kunde.1988. "The Influence of Polyolefin Additives on the Performance of Fluorocarbon Elastomer Processing Aids", SPE ANTEC '88 Conference Proceedings, XXXIV:1425.
