Polypropylene (PP)

Polypropylene (PP)

Polypropylene is one of the least expensive and lightest thermoplastics on the market today. It offers ease of processing with excellent chemical resistance and good mechanical properties. Polypropylene maintains a high stiffness and good strength even in relatively high temperatures. There are a tremendous amount of end-use applications for PP because of the ability to tailor grades with specific molecular properties and additives during its manufacturing process.

Common Uses:

  • Consumer products: Buckets, bowls, bottle crates, toys, washing machine drums, pipes, battery case bottles, bottle caps and films for packaging such as cigarette packets, stationery, loudspeakers
  • Automotive industry: Bumpers, general mechanical parts
  • Industrial uses; Fibers for carpeting and artificial sports surfaces, laboratory equipment
  • Textile industry: "Under Armour" thermal underwear, ropes

Physical Properties:

  • Specific Gravity - 0.91 g/cm
  • Tensile Strength - 4700 psi
  • Flexural Strength - 6000 psi
  • Impact Strength - 1.0 ft.-lb/in

General Properties:

  • High Stiffness
  • Good chemical resistance
  • Good strength
  • Heat resistant
  • Abrasion resistant
  • Fatigue resistant
  • Good gloss


  • Injection Molding
  • Extrusion

Call Project Engineering at (713)643-6577 or ask an engineer