What is Polystyrene Foam?
Home » News » What is Polystyrene Foam?

People produce polystyrene foam from styrene, it is a kind of plastic with the features of lightweight, moisture-resistant. Polystyrene is also remarkably buoyant because it is composed of more than 90 percent air. People are very familiar with this material in the nowadays, sometimes, we commonly mistaken it for something else.

Styrofoam™ is the trademarked name for extruded polystyrene foam, an invention of the Dow chemical Company that has been in production for more than 50 years. Nearly anyone who has purchased coffee “to go” has heard the container being referred to as a Styrofoam™ cup. However, this material has never been used to make disposable coffee cups. For that matter, it’s never been used to make portable picnic coolers either, another misconception. These products are actually made from expanded polystyrene foam (EPS) in the form of beads, commonly known as packaging “peanuts.”
Unlike disposable cups and picnic coolers, which are notably white in color, products made from ps foam sheet extrusion line are typically blue. It is used to make insulation wrap for residential homes, commercial buildings, and plumbing systems. It is also used in road construction as an insulation layer under pavement to deter the formation of cracks and potholes that occur from seasonal freezing and thawing of the soil beneath.
Polystyrene foam is also made into materials used in craft projects. In fact, florists are familiar with the distinctive crackling sound made when cutting Styrofoam™ or inserting floral stems into it. It is also used to fashion architectural models and as backing for framed photographs and prints. While other forms of polystyrene foam are blue in color, the foam made for craft purposes is either green or white.
In terms of environmental impact and hazards to human health, polystyrene foam manufacturing is regarded by the U.S. Environmental Protection Agency as the fifth major producer of hazardous waste. Aside from posing an occupational health risk due to exposure to styrene during processing, there are concerns over polystyrene foam production contributing to poor air quality. This is due to hydrocarbons escaping during manufacturing and reacting with oxides in the air, which forms a pollutant known as troposphere ozone.
In addition, many recycling companies will not accept products made from polystyrene foam left on the curb, presumably because the market for reclaiming this material is limited. For these and other reasons, polystyrene foam is banned in some regions, such as Portland, Oregon, and Orange County in California.

In the nowadays world, it is still very popular in a lot of countries. People are using the PS foam sheet for flooring, meat, foam egg boxes, etc. This ps foam sheet was extruded by the PS foam sheet extruder. Usually we produce the polystyrene foam sheet with the pe foam sheet extrusion line, and then we produce the products we need with the automatic vacuum forming and cutting line. Tongyi company is a professional company who produce these kinds of foam extrusion machines with more than 20 years experience.