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what are foam cup made of?

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Anonymous

12y ago
Updated: 5/22/2022

foam cups

Foam Cups Are Made From The Same Stuff Foam Coolers Are Made From

Foam Cups are actually made of something called Expanded Polystyrene (EPS), the same material we use at LoBoy to make our Foam Coolers. EPS is an amazing, space-age wonder of environmentally friendly science (if you don't throw it away, it is RECYCLABLE!!!) - a rigid closed cell plastic foam resin made from Polystyrene derived from crude oil. EPS is Polystyrene Foam that uses Pentane gas (C5H12) as a blowing agent. During the material production process called "Polymerization" the polystyrene resin granules impregnated with the blowing agent.

The EPS production process begins by pre-expanding the EPS bead. Expansion with steam will increase bead volume 40 - 50 times, depending on the required final density. Next, an aluminum mold is filled with expanded bead and heated with steam until they fuse together. The part is cooled with vacuum and ejected from the mold. The molds themselves vary from foam cups to foam coolers to wall insulation to material for tough, longer-lasting highway construction.

You can find videos online that show the manufacturing process, just as you can find videos and information on how to recycle any old, used, or scrap EPS foam you may have.

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Trisha Bode

Lvl 10
3y ago

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