Injection Molding Resin: Olefins

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Thermoplastic olefins, also known as TPOs or olefinic thermoplastic elastomers, are a group of polymer-blend materials. Generally, TPOs consist of a mix of a thermoplastic (such as polypropylene, polyethylene, etc.), an elastomer or rubber (such as EPDM, EPR, etc.), and some sort of filler (ranging from talc to carbon fiber to metal oxy sulfate). Because there are so many possible formulations, olefins are a very versatile group of thermoplastics that find use in countless applications.

Properties of TPOs and Olefins

Because their chemical compositions can vary so greatly, the properties of thermoplastic olefins can vary greatly, as well. However, most olefin materials exhibit some or all of the following:

  • High stiffness
  • High impact resistance
  • Excellent dimensional stability
  • Low coefficient of thermal expansion
  • Good flexibility
  • Excellent weather resistance
  • Good tear strength
  • UV resistant
  • Lightweight

Are Thermoplastic Olefins Right for Your Project?

At Stack Plastics, we’ve been producing injection molded olefin parts for over 20 years. Our team has the experience and the expertise to deliver molded TPO parts in even the most complex shapes, and can help you determine which of these materials is the best fit for your unique application.

Contact Stack Plastics

To learn more about olefin materials, or to get started on your injection molding project, contact Stack Plastics today.