Economic recycling of PVC window profile sections and old windows

The hamos WRS window recycling plant is specially designed for the economic recycling of PVC window profile sections and PVC waste windows and consists of a combination of hamos EKS electrostatic plastic separators and opto-electronic color sorting devices.

hamos EKS electrostatic separators are used to separate practically all seals (rubber, soft PVC, etc.) from shredded and dedusted PVC window sections. To further increase the purity and/or improve the degree of whiteness, opto-electronic color sorters are installed downstream.

Through the combined use of these two processes, PVC purities of over 99.99 % can be achieved.

Requirements for your material

In order to achieve an optimum separation result, the PVC window regrind to be separated should be as follows:

  • PVC regrind with impurities like rubber, nylon, flexible PVC etc.
  • Particle size 2 to 8 mm
  • Dedusted material
  • Completely digested material
  • Trockenes Material (ideale Oberflächenfeuchte < 0,8 %)
  • Material not treated with antistatic agents

You are not sure whether your material is suitable for electrostatic separation? After consultation, send us a material sample of approx. 20 kg with which we can test the separability of your material in our pilot plant.

We show you which purities and throughputs we achieve with your material. Based on these separation results, you will receive our test report. We will then be happy to offer you the optimum system for your application.

You will be amazed at the added value you can achieve with your material once it has been separated into unmixed fractions.

Operating principle

Step I: Electrostatic separation
In the hamos EKS, the granulated and dedusted mixture of PVC and rubber is tribo-electrically charged in a special charging unit, with PVC particles being negatively charged and rubber and foreign plastics positively charged. The plastics are then separated in a high-voltage field. A special electrode design is used to additionally separate some of the impurities from metal, glass, wood, PE films, etc. that may be contained in the material.
Step II: Color sorting
In order to increase the product purity of the PVC fraction, an opto-electronic SEA PIXEL color sorting system is subsequently used. The material to be sorted is inspected from all sides by a camera system. If a false-colored particle is detected, it is blown out by a fast-switching pressure valve.

Your advantages

  • Dry separation process
  • PVC purities up to over 99.99
  • Low PVC loss
  • Improvement of the whiteness of the product
  • Separation independent of specific gravity
  • Separation of additional impurities from non-plastics such as wood, metal, glass, etc.
  • Proven system combination
  • Fast amortization
  • High throughputs
  • Low energy consumption
  • Low personnel deployment


For example, if you

  • Production waste of PVC window profiles
  • Profile sections
  • PVC old windows
  • PVC doors
  • Roller shutter armor
  • etc.

recycle, the hamos WRS system is ideal for separating unwanted contaminants such as rubber seals, nylon and other foreign plastics.

Professionals work with professionals

After 21 years of operation, our experience with the hamos WRS window recycling plant is very positive. The plant is an important part of our process. It helps us to achieve our targets. It guarantees the highest quality required for the PVC and thus increases the overall performance of our process. The hamos plant is indispensable and "closes our recycling loop."

- Bodo Streubel, Operations Manager of Dekura Bad Schmiedeberg

We are very satisfied with the standard hamos GmbH has achieved. Previously, it was not possible to sort PVC from profile sections and production remnants fully automatically to this high standard of quality and purity. This development has helped us to completely close the material loop in window profile production. A new world-class standard was born.

- Jörg Ipfling, Manager Recycling Technology Window Solutions at Rehau

The electrostatic recycling systems of HAMOS make a very important contribution to the recycling process of PVC windows due to their good separation performance.

- ppa. S. Lengnick, Production Management, VEKA Umwelttechnik GmbH

The separation systems supplied by hamos are an essential part of ensuring the highest quality of products supplied by Metal-Plast to the market. By using hamos solutions we have increased the processing capacity of our plant and the products manufactured by Metal-Plast are of the highest quality.

- Grzegorz Jasiński, Chairman of the Board


For more information, please download our product brochure.

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