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Get Your Foam Questions Answered

Posted by Jodi A. on 7/11/2017 to Planes
You may have seen the different types of foam in an airplane listing and asked yourself, "What is the difference between EPP, EPO, and EPS foam?" Be confused no more! We're here to answer all of your foam questions.

What is EPP foam?

EPP stands for Expanded Polypropylene. This foam is very durable and is used in most light planes. When you press your finger into the foam, the dent soon disappears. This means that if you have a bumpy landing, your plane will generally be alright. The foam is excellent under compression conditions, but tears more easily under tension. However, EPP foam parkflyers and lightweight planes are great performers and are perfect for most pilots.We have a fantastic selection of parkflyer plane kits made from EPP foam, which come pre-painted. 

What is EPO foam?

EPO stands for Expanded PolyOlefin. This foam is even more durable than EPP. However, because of its density, EPO is heavier and not usually used in parkflyers. The most common application for EPP foam is in jets because the foam can withstand some pretty hefty impacts at lower speeds, although we do not recommend testing its limits on the field.

What is EPS foam?

Commonly known by its trademark name Styrofoam, EPS stands for Expanded PolyStyrene. It's brittle and difficult to glue back together, as opposed to the EPP and EPO foams. It is lightweight, and may be used in microplanes. Early Chinese models often used EPS. However, this foam is falling out of application due to the better performance of EPP and EPO foams.

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