Milliken Chemical says its development work can expand applications for polypropylene blown film.
Milliken's Millad 3988 clarifying agent is key to the PP film developments. The Spartanburg, S.C., firm said the additive not only boosts film clarity, but it also improves process stability, previously a stumbling block for PP blown film.
The company said that blown film traditionally has been dominated by polyethylene but Milliken's clarifying agent allows production of PP blown film on the same equipment. Since clarified PP blown film has high visual appeal, its use in co-extruded film can eliminate the need for a laminated layer, according to Milliken. Other benefits possible with PP blown film include stiffness and better moisture barrier.
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