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PET recycling considerations

What is important when it comes to PET recycling is product quality and the recycling costs per tonne of PET.

In terms of product quality, particular attention must be paid to ensure that the recyclate produced is safe for use in the food industry. This means removing any contamination from the post-consumer material and manufacturing a product as a new article.

The so-called "decontamination" of the recyclate is carried out mechanically by means of filtration and physically through degassing. Whereas pure filtration is an easy problem to solve, when it comes to the decontamination of volatile and non-volatile components, the degassing capability of the extrusion system and/or the downstream or upstream SSP must be taken into consideration.

The necessary decontamination capability is demonstrated via FDA Approval or via testing specific to drinks producers.

Manufacturing costs take several factors into account, for example line availability, maintenance costs, cleaning work and operating costs. Within the past few years, strong competition has arisen between R-PET (recycled PET from drinks bottles) and virgin PET (new material). High demand has resulted in high market prices for the most important raw material of post-consumer bottles. Due to the rising costs of PET flakes compared with virgin PET prices, manufacturing costs are key to the economic efficiency of PET recycling.
Our objective is to create a highly efficient and economical system, combining individual technologies to form a holistic concept.