Plastistrength® 551

Plastistrength® process aids

Plastistrength® 551 acrylic process aid is a medium molecular weight acrylic process aid. It brings enhanced processability at low use levels to most rigid and flexible vinyl compounds. This acrylic processing aid is recommended for applications like vinyl siding, profiles and calendering.


  • Excellent melt strength to vinyl formulation during processing
  • Even control over fusion at reduced use levels for ease of processing and maximum development of physical properties
  • Extensive weatherability

Geographic availability

North America
South America


  • Building and construction
    • Exterior building products
    • Extrusion
    • Films
    • Injection molding
    • PVC
    • Siding
  • Chemical and plastics industry
    • PVC
  • Consumer goods
    • Film
  • Packaging and Paper
    • Film
    • Film and sheet
    • Flexible packaging
    • Packaging film
    • Rigid packaging


  • Fence, deck and rail extrusion
  • Opaque packaging
  • Opaque sheet film
  • Weatherable molding
  • Window profile extrusion
  • Wood composite molding