Polypropylene (PP) Plastic

PP is tough, but flexible and resistant to chemicals. In addition, PP’s high melting point makes it ideal for hot-filled liquids. The most common use for PP in thermoforming is in the production of food packaging.

Characteristics:

  • Clarity – mostly colored opaque or translucent
  • Strength – very soft and resilient (zero cracking)
  • Versatility – tough and flexible
  • Barrier to moisture
  • Resistance to chemicals, grease, oil, and heat
  • Long heat cycle
  • Some shrink issues
  • Very high yield

Common Forms:

  • Microwave-safe plastic
  • Margarine tubs
  • Medicine bottles
  • Yogurt containers