Polymer Processing Aid commonly known as PPA is a Fluoro Polymer based processing additive designed to give benefits in extrusion or blow moulding process. PPA is targeted for reduction in surface defects like lower gel formation, elimination of die build up and a substantial reduction in melt fracture besides other benefits of increase in output and reduction in energy consumption.

Benefits:
Use of appropriate PPA -
Reduces Die Build Up (DBU) efficiently. Decreases the stress       level and reduces die swell in polymer by migrating to the       surface of the polymer melt.
Reduces the surface energy of the die wall resulting in
flawless production.
Eliminates melt fracture.
Improves HDPE Blow Moulding Applications like:

     Reducing melt pressure and improving gloss.
     Lowering processing temperature resulting in better melt          strength retention.
     Energy Savings.