Different methods of polystyrene recycling are used in different industries. In general, polystyrenes are produced by a variety of molding methods. This substance will remain in the environment for more than 500 years if not recycled properly! Therefore, polystyrenes should be recycled after using; But recycling polystyrenes is expensive! Polystyrenes contain many chemicals and are harmful to human health. This material is used to produce various plastics and after recycling, it is converted into various shapes. In this PETROPROVIDERS article, join us to show you Different methods of polystyrene recycling.

Introduction Different methods of polystyrene recycling

There are a variety of ways to recycle polystyrene; Polystyrene is easy to recycle, but it costs a lot to recycle. It should be noted that large industries around the world use a variety of methods for polystyrene recycling. We show you these methods below:

Melting polystyrene is the first method of polystyrene recycling

Melting polystyrene

Melting polystyrene

Polystyrenes melt at high temperatures; To melt polystyrene, they are placed in special ovens and the oven temperature is raised. Polystyrene loses it’s steady state and melts; The molten polystyrene is then poured into molds. The reason polystyrene melts is that the polystyrene beads inside the mold are tightly bonded together.

Polystyrenes are made from petroleum derivatives; This material is also used to fuel refineries. There are other uses for polystyrene that we are familiar with; For example, polystyrenes are used to make durable plastics and medical devices.

In addition, polystyrenes become recycled sheets after recycling. These panels are insulated against light and moisture and are used in buildings. One of the most important insulations in buildings is the floor and ceiling insulation of buildings that use EPS, XPS, and HIPS polystyrene.

By recycling polystyrenes, the old material melts and a new product is produced. For example, large construction marketing companies crush polystyrene blocks and use them in buildings to improve cement concrete. Recycling polystyrene destroys the original shape of the material; So it can be produced in other forms and reused.

Melting and molding of polystyrenes

In this method, polystyrenes are melted and poured into special molds. These molds then convert the polystyrene material to the desired shape and cool it. Then new polystyrene is produced!

Recycling polystyrene reduces the cost of purchasing raw materials; In global industries, recycled polystyrene is used to make paintings, benches, and home appliances. It should be noted that the cost of recycling polystyrene is high; So it is better to recycle polystyrenes in bulk.

Polystyrene recycling reduces environmental pollution. This also reduces damage to the ozone layer and open water. We know that polystyrene contaminants are very diverse; Therefore, it is better to do polystyrene recycling methods well.

How to recycle polystyrene carton packages

One of the most widely used polystyrenes is polystyrene cartons; It is used for food packaging, home appliance packaging, sports equipment packaging, and medical equipment packaging. Recycling polystyrene cartons can reduce environmental pollution.

On average, about 27% of cartons are recycled; About 73% of cartons enter the environment. Polystyrene cartons are durable and do not crumble easily; These cartons must be melted and recycled at very high temperatures. Therefore, the cost of recycling polystyrene cartons is very high!

Extrusion methods of extruded polystyrene and expanded polystyrene

Recycling of XPS and EPS polystyrenes produces new polystyrene materials. These two grades of polystyrene are used in various industries; It should be noted that XPS is the most dangerous polystyrene! So it is better to recycle XPS with modern methods and in bulk.

One of the most important recycled goods is plastic waste. These materials are made of extruded and expanded polystyrene and pollute the environment. Worldwide, recycling plastic waste is one of the most difficult processes in environmental care; Because polystyrene is used all over the world and a lot of plastic waste is produced daily.

Modern devices are used for optimal recycling of EPS and XPS polystyrenes. These devices can recycle polystyrene blocks and sheets and convert them into a variety of shapes. These devices are very difficult to buy! Because modern recycling machines are commonly used in global industries.

Why should we recycle polystyrene?

How to recycle polystyrene

How to recycle polystyrene

Polystyrenes melt at temperatures above 100 degrees. These materials are produced all over the world and used by people. Upon entering the environment, polystyrenes pollute the environment, especially running water. Every year, a lot of plastic waste is generated and discharged into natural water sources.

Polystyrene recycling reduces pollution of running water, seas, forests, and the environment. This increases the applications of polystyrene and reduces the cost of purchasing raw materials. But why is polystyrene recycling so rare around the world?

The most important reason for not recycling polystyrenes is the high cost of recycling! There are several methods for polystyrene recycling; These methods increase the efficiency of polystyrenes. It should be noted that the use of recycling methods should be done en masse. For this reason, investors should financially support polystyrene recycling companies.

Financing polystyrene recycling increases the recycling of these polymers from 30 kg to 400 kg per month! This reduces environmental pollution and reuses made polystyrene. With the advancement of science, new and less expensive methods for recycling polymers will be known.

Summary of Different methods of polystyrene recycling

In this article, we showed you the different methods of recycling polystyrene and its importance. Polystyrenes are used in various industries and are used to produce durable plastics. Polystyrenes contain many chemicals and are harmful to human health. This material is used to produce various plastics and after recycling, it is converted into various shapes.

Polystyrenes are produced by various molding methods. This substance will remain in the environment for more than 500 years if not recycled properly! Therefore, polystyrenes should be recycled after using; But recycling polystyrenes is expensive!

There are a variety of ways to recycle polystyrene. One of the most widely used polystyrenes is polystyrene cartons. These cartons are used worldwide for food packaging, home appliance packaging, medical device packaging, and industrial parts packaging. Recycling polystyrene cartons is very difficult! Because it costs a lot and should be done in bulk.

What do you think about polystyrene recycling? Is recycling these polymers a good way to reuse them? Will the methods of recycling polystyrenes improve with the advancement of science? You can ask your questions in the comments section of our experts.


Are polystyrenes recycled?

Yes! Polystyrenes are recycled in different ways, But recycling polystyrene is expensive.

What is the most dangerous polystyrene for recycling?

The most dangerous grade of polystyrene is extruded polystyrene or XPS. This polystyrene is used in various industries, but it is very harmful to human and animal health.

Why is polystyrene recycling only 27%?

Because polystyrenes are produced all over the world and produce a lot of waste. Recycling all polystyrene is difficult and costly.

Can HIPS and GPPS polystyrenes be recycled?

Yes! Usually, all polystyrene grades are recycled; But recycling polystyrene is expensive.