2015 Archive

Pollution Culprit EPS Foam can be Turned into Resources

As is known to all, EPS foam is a kind of light petroleum based plastic materials, which are generally used to transport services, and disposable containers, and disposable foam lunch boxes, foam molding products. Polystyrene foam is considered as the main cause of beach and ocean pollution by many environmental groups.

polystyrene foam

However, China Light Industry Information Center, senior engineer Tang Sai Zhen thinks , according to the domestic and foreign many years practical experience and research results show that the EPS foam plastic tableware is not the "white pollution" of the culprit, it is harmless, health and safety. It can be recycled from the resources, energy, application, health performance, recycling and degradation of performance and price, etc., in addition to raw materials is not from renewable resources, with the use of hard degradation, the other is better than all kinds of disposable tableware, that is, the best price is all kinds of disposable tableware. 


From the life cycle assessment of disposable tableware, EPS foam plastic tableware is in line with the 3R (reduction, recycling, reuse) principle of green environmentally friendly products. Therefore, in the current alternative product technology, economic problems have not yet been fully resolved, the application, health performance is still a lot of problems and the market has a greater demand, EPS foam plastic food packaging is undoubtedly the first choice of disposable food packaging products.
At present, the global annual production of waste polystyrene (EPS) foam is 5800000 tons, of which China's annual production is about 1800000 tons, in addition to a small number of developed countries, other countries of the EPS foam material has not been effectively recycled.

According to incomplete statistics, at present the Nordic countries and Japan EPS foam recycling rate is 72%, South Korea EPS foam recycling rate is 64%, while the rest of the country and the region of EPS foam recycling rate is only 10-30%. In China, due to the recovery mechanism is still not perfect, resulting in 70% to be buried or burned, only about 30% of recovery and utilization of waste polystyrene material, most have not been effective recovery and utilization, resulting in serious environmental pollution. Severe resource crisis and environmental pollution, we are forced to increase resource recycling and reuse, and going green development path.

At present, the method of melting the waste polystyrene foam is to break it, and then melt it into another material particle, and then add the corresponding auxiliary agent. 


For the recovery and reuse methods in general practice is to first go through a crusher foam will be broken, melting, brace, cutting and shaping, but in the production of making the plastic particles will of raw materials do not crush thoroughly, melting temperature control is not uniform, also cannot avoid raw materials mixed some impurities, this has led to low production efficiency, at the same time, because of the presence of impurities can cause damage to the equipment. Styrofoam recycling resources, production methods, involving the processing of recycled particles in the field, through the selection of raw materials, air drying, crushing, the first time in addition to miscellaneous, melting, extrusion molding, two times in addition to miscellaneous, cooling, cutting, quality inspection, packaging storage.

waste styrofoam

Polystyrene foam is one of the most widely used in the world. Because of its good water resistance, insulation, insulation, low moisture absorption and strong seismic intensity, and its quality is light, strong, easy forming, low price and so on, it is widely used in the fields of packaging, moisture, waterproof, heat insulation, shock absorption, decoration, catering, etc..