What are the Different Uses for Polystyrene Beads?

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  • Written By: B. Turner
  • Edited By: W. Everett
  • Last Modified Date: 06 December 2018
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Polystyrene is a type of plastic made from petroleum by-products. It is formed from hydrocarbon molecules, which take the shape of tiny foam particles after heating and processing. These foam particles, or beads, are large enough to be visible to the eye, yet small and lightweight enough to be used in a wide variety of applications. While many people associate polystyrene beads with beanbag filler, they are also used to make products ranging from building insulation to packaging materials. Outside of manufacturing, they are also widely used to control mosquitoes and other pests.

One of the most common uses for polystyrene beads is as a filler material in consumer goods. These beads are used in most beanbag chairs, as well as small foot bags, pet beds, and pillows or cushions. They also serve as a popular filler material for stuffed animals and other toys. When used as a filler material, the beads are poured into an outer shell or casing without the use of any resins or adhesives.


Polystyrene beads may serve as wall cavity insulation in homes and building. They are particularly effective when installed in existing walls, where it may be impractical to add traditional fiberglass blankets. Installers cut a small hole in the drywall or plaster, then inject the polystyrene into the wall using an air blower. The beads fill up all the available space and easily fit around pipes, wires, and other obstructions. Polystyrene insulation helps to improve comfort and energy efficiency in a building, which helps to keep energy costs low and preserve fossil fuels.

Loose beads are also used to slow the growth of mosquito populations, which helps to control diseases like malaria. These beads are poured into septic tanks or latrine pits to interrupt the respiration patterns of mosquito larvae. The layer of floating polystyrene also prevents adult mosquitoes from exiting these breeding grounds. Unlike alternate materials, polystyrene beads remain on the surface of the water until they are washed away. They may also be use in wet or spongy soil, or simply around planting beds.

The beads may be molded together to form expanded polystyrene foam (EPS). This foam serves as a popular packaging material, while small foam peanuts can be used to cushion objects during shipping. Beads can also be pressed into thin sheets of foam, which are used to insulate walls, roofs, or even refrigeration units.


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Post 2

@Sara007 - You can easily make pillows out of the polystyrene foam beads if you have enough of them. You seal them inside the pillow and a liner should keep your pets and children from being exposed to the material. Now, if you want to recycle the shipping supplies you are going to have to call your local recycling depot and ask if they take it.

In our city we have two recycling facilities and only one will take polystyrene because it is so difficult to recycle. Basically it gets melted down into smaller blocks and sold as a fuel source. Unfortunately a lot of cities just toss polystyrene into the landfill to save on recycling costs.

Post 1

My family and I have been doing quite a bit of online shopping and are overwhelmed by the number of packing peanuts, packing foam and plastic beads that we are now stuck with. Is this stuff recyclable or should we figure out something to use it for? I really hate the idea of just throwing it in the trash because it is so bulky.

My one friend recommended we make some pillows out of the material, but I am not sure if polystyrene is a safe material to have around my kids and pets. I would prefer to just get rid of it if possible, but I hate the idea of making more pollution with the packing materials were stuck with.

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