Posts Tagged ‘Styrofoam recycling’

Facts about Styrofoam and Styrofoam Recycling

Posted 25 Feb 2013 — by Marketing
Category Application

Facts about Styrofoam and Styrofoam RecyclingStyrofoam has many benefits, including insulating quality that helps keep food warm. It is also of light weight, has high durability and strength, making it an excellent packaging material.

Styrofoam is made from petroleum. And in its production process, a carcinogenic chemical known as benzene is used. Due to the presence of benzene in Styrofoam, it is inevitable that food in direct contact with the Styrofoam food packaging would be affected. This has been one of the main reasons why over 20 cities in the United States have banned the use of Styrofoam.

Moreover, Styrofoam is hardly biodegradable. In the absence of a suitable solvent, Styrofoam can last almost forever. When ingested by animals, it often blocks their digestive tracts, causes starvation, and ultimately death. As such, it is important to dispose of Styrofoam carefully.

Styrofoam is often space-consuming. Only about five percent of Styrofoam package is polystyrene, the rest is air. It is estimated that by volume, it takes much as much as thirty percent of landfills worldwide. This situation adds on to the problem of disposing Styrofoam.

The process of Styrofoam recycling involves feeding the collected Styrofoam through conveyor belts into a shredding machine.

The shredded Styrofoam is then transfered to a plastic extruder where the foam is exposed to heat and pressure to melt the Styrofoam. Subsequently, the melted Styrofoam passes out through a small outlet at the end of the extruder and solidifies into a continuous form. This form of Styrofoam can then be easily transported to the required factories for remolding (again using heat and pressure) into its new Styrofoam products.

Styrofoam recycling process

Posted 12 Jul 2012 — by Marketing
Category Application

Styrofoam Recycling | Hasswell TechnologyStyrofoam is composed of almost single material, and therefore the sorting of it is easy and the compaction to reduce its volume by heat, solvent and /or physical compression is practicable. Thus Styrofoam has excellent properties for recycling. The recycling technology of Styrofoam also has been developed remarkably in order to achieve lower costs and higher quality.

Sorting and collection of Styrofoam are easy, because it is composed of almost single material. In order to solve Styrofoam’s weak point in recycling of its bulkiness, the compaction process to reduce the volume is practiced using heat or solvent, or by physical compression. The compacted ingot (a lump of polystyrene) finds its good market and is reused as a recycled raw material effectively.

In addition, the recycling technology of Styrofoam has been developed remarkably in order to achieve the lower cost and the higher quality. And above all, the raw material beads (recycled beads) is recycled from Styrofoam waste and further reused as cushioned packaging for household appliances, etc. This process is called “beads to beads” or “EPS to EPS”, where the recycling loop is perfectly closed, and has become practicable more extensively.

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