Film, plastic bottles, packagings etc. are to be found in our consuming and economic goods every day . A very important precondition for the further treatment of these synthetics towards raw material and recources processing for the production of recyclables and secondary raw materials is the unmix as well as the cleanness of these plastics.
Our sorting plants separate this plastics scrap and fractionate it into potential recyclables by means of mechanical and automatical sorting technologies. The Ballistic Separator for example has become a DSD’s core unit of modern sorting plants due to it’s huge versatility of application.
The positioning of the STADLER Ballistic Separator in the pre-selection for instance enables the division of the material stream into a “flat-light” and a “rolling-heavy” fraction at the outset of the whole process. The progressive optimization of sorting plants with regard to the classification of polymers strongly profits by the use of ballistic separators before near-infrared treatment.
All plastic bottles and hollow bodies sorted out are further treated on a following processing plant for bottles. The material is being washed and grinded. By sink-float separation, which is a wet process based on the varying specific weights of the different synthetics to make a further quality control. Finally the dried mill material is to be regrinded once more.
The high degree of purity of the “rolling-heavy” fraction, being produced with the ballistic separator, offers an almost fully automatic sorting of the polymers by optical detection techniques.
Clean PET bottles are valuable raw materials, which can be easily merchandised for further production of high quality products.
In a Plastic sorting and light packaging Recovery process there are some simple process depending on material composition
One; The bags with the light packagins are opened
in a bag opener. Afterwards all troubling substances are taken out. A downstream
ballistic separator fractionates the materials according to their form.
By magnetic and eddy-current technology as
well as air separators and optical identification
all potential recyclables are sorted into PET, PE, PP, PVC, brick, Fe, Alu, paper and cardboard.
At the end of the sorting process the different
materials are pressed into bales and thus
prepared for the recycling.
Two; Automatical treatment of the light packagings by auger fillers, ballistic separators, ferrous and non-ferrous and air separators as well as optical identification discharging all troubling materials
at the same time. Particularly in the aera of PET separation a very high purity and recoverability can be obtained due to the differentiation of colours.
Furthermore various film fractions with different sizes as well as a PE/PP mix are being produced
as potential recyclables.
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