Plastic Recycling Machines: Sorting (Part 2)

Plastic Recycling Machines: Sorting (Part 2)

In our previous article about plastic recycling machines we already explained several machines for sorting and separating different plastics and waste materials. We talked about the tire debeader, bale breaker, label separator, sorting table and color sorting machine. Today we continue with some more separation and sorting machines.

Magnetic Separator

Often plastic and rubber waste can contain steel parts that were integrated in the original product or that were mixed during the waste collection process. The steel parts can not only degrade the quality of the recycled product but also damage machines that were not intended to process steel parts. A magnetic belt running above a conveyor belt can pick out all these steel parts and collect them in a container for disposal.

Metal Detector

Despite many efforts to clear the plastic waste from metal contaminants by means of automatic or manual sorting, there still can end up some metal parts in the material flow at the entrance of the recycling line. To ensure high quality recycled plastic and protect the machines from damages, a metal detector can be installed at the beginning to stop the input flow when a metal part is detected so it can be removed before any damage or quality issue occurs.

Non-Ferrous Metal Separator

Plastic products can often contain metal parts like aluminum, messing or copper locks or joints. In addition, could aluminum cans have found their way in between plastic bottles waste. These metal contaminants can have bad influence on the quality of recycled plastic or rubber. To remove these metal parts from the plastic or rubber waste, a special technique is used that creates an electro-magnetic field that expulses conductive objects and collects them in a separate container.

Vibrating Sieve

A vibrating sieve separates particles based on their size. This can be particles of the same material to ensure a certain particle size or it can be to separate dust and fibers from the actual product. The perforation of the sieve decides the size of the particles that can pass though. The vibration of the screen takes care of a smooth flow of material and a qualitative separation of the smaller particles.

Metal-Plastic Separator

Certain products contain equal amounts of metals and plastic. This is the case with electric cables for example where the aluminum or copper core is completely covered in rubber and plastic. These plastic and metal fractions are bound so closely together that the only way to separate them is to cut the product into tiny particles. After cutting the particles can be separated based on their different mechanical characteristics. This separation is realized with an inclined vibrating screen that uses the natural frequency to guide the metal and plastic parts into different directions.

Plastic Recycling Machines: Sorting (Part 1)

Plastic Recycling Machines: Sorting (Part 1)

One of the main tasks in recycling waste material is to separate the different fractions or remove contaminating materials from the valuable main part. We have several solutions available to separate different plastics or metals from plastic and rubber.

Tire Debeader

Especially useful for a semi-automatic tire recycling line is the tire debeader. There are different techniques available to remove the steel bead from the tire before starting the actual recycling process. By removing the bead on forehand, investment money can be saved for more expensive machines to crumble and separate the steel from the rubber. This method is especially economical for lower capacities.

Bale Breaker

In many cases, waste material is pre-sorted and tied up in bales. To start recycling the material these bales have to be opened so the material can be treated separately. The bale breaker breaks the straps around the bales and loosens the objects contained in the bales. This makes it possible to wash off dust effectively and sort out contaminating materials such as metals before starting the actual recycling process.

Label Separator

When dealing with hard plastic objects like bottles or containers that contain labels, there can always be some label material left even after intensive washing and sorting. The label separator working with air is an efficient way to remove the remaining labels from the recycled material and to improve the purity of the recycled material.

Sorting Table

At the sorting table, the waste material passes by on a belt conveyor while workers on fixed positions analyze the waste and pick out foreign materials. Collection bins or discharge holes are fixed on each position to easily remove the sorted out contaminants from the sorting platform.

Color Sorting

For high-end customers with strict requirements to the quality of the recycled material our color-sorting machine is indispensable. The color sorting machine works with optical color recognition and sorts out the particles with a different color. It can be used to separate differently colored materials or to sort out remaining contaminants to increase the purity level of the recycled material.