Polystyrene PS

Polystyrene is an inexpensive commodity plastic. It is commonly used both as transparent and opaque.

Polystyrene as opaque

Why choose?

  • Inexpensive material mainly for indoor use. PS is a commodity plastic.
  • Expectations of the product’s lifespan are low.
  • FDA approved
  • Stiffness. PS has a slightly higher modulus of elasticity than most unfilled plastics. It is nevertheless not suitable for machine design purposes.

Why not choose?

  • Risk of continuous load and stress cracking. Components made of PS often break over time even due to internal stress.
  • Poor chemical resistance.
  • Low service temperature (e.g. temperature inside a car left in the sun might be too much for PS component)
  • Fragile, poor impact resistance (you might see what HIPS has to offer)
  • The rattling sound that is typical to PS (when you tap your finger on it) doesn’t give an impression of high quality.

Typical applications:

  • Toy guns
  • Board games
  • Paper trays
  • Screwdriver sales package
  • Plastic cup
  • CD case

 

PS as transparent

Why choose?

  • Very good and clear transparency
  • The same qualities as opaque

Why not choose?

  • The same weaknesses as opaque

Typical applications:

  • Paper trays
  • Spice packages
  • Screwdriver sales package
  • Plastic cups
  • CD case

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All information on Plasticprop.com is based on the best knowledge and understanding of experienced plastic product designers. Nevertheless, we may be wrong. Do not use this website as your primary or only source of information. Always check and test in practice. Kindly contribute, if you know better. We do not take any responsibility, financial or ethical, for the outcome of your product.