PROCESSING AID

Better and simpler processing with CONSTAB Masterbatches

Blown and cast films made from m-LLDPE (metallocene catalyst) require the addition of a processing aid. Although only very little amounts of such agents are added they have a pronounced effect on the quality of the film as well as the available production time of the extruder.

Shark skin, or more academic melt fracture, is a physical phenomenon while extruding LLDPE: a slip-stick effect at the dies exit creates a regular mechanical pattern on the surface of the film. Processing aid effectively help to eliminate this disturbing surface defect.

Also the accumulation of die deposit is suppressed drastically so that the production intervalls are much longer before a production stop is necessary to clean the extruder.

 

 

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