Vacurema technology: Difference between revisions

In this process, food contact compliant decontamination takes place before the extrusion process. The patented pre-treatment of PET flakes at raised temperature and in high vacuum before the extrusion process removes moisture and migration materials from the feedstock very effectively and in a stable process environment. Thanks to the vacuum treatment, stable IV values can be achieved even in the case of varying moisture levels and different IV values in the input material.  

Input materials with up to 1.5% moisture can be processed, no expensive pre-drying is necessary- Extruder degassing is not required either, meaning that a short extruder screw can be used and the thermal stress on the material is reduced as a result.  

Depending on the end application the system processes PET bottle flakes, ground amorphous skeleton waste/edge trim and virgin material (also in mixtures), i.e. bulk densities of 250 to 850kg/m³.

Thanks to the patented pre-treatment of PET flakes, IV increase and decontamination are fast, reliable and energy-saving. This means that FDA quality (among other things) can be ensured for the end products produced.  

Surface to volume ratio for flakes is 2.5 times higher than for pellets

''IV stability through vacuum treatment''

Despite varying moisture levels and different IV values in the input material, stable IV values are achieved through the patented pre-treatment method. This means, therefore, that input materials with higher material moisture levels can also be recycled.   

''Melting under vacuum''

The patented pre-treatment at raised temperature and in high vacuum before the extrusion process removes moisture and migration materials from the feedstock in a stable process environment. This prevents any hydrolytic and oxidative decomposition of the melt in the extruder.

''Low thermal stress''

The very short extruder screw without additional extruder degassing reduces the thermal stress on the material through minimized dwell time.

   

''Large area ultrafine melt filtration''

The filter systems have very large active filter surfaces. This enables filtration with up to 32μm fineness at low pressure. The result is highly clean pellets.

''Minimum production costs with ecoSAVE''

Electricity accounts for 38% of the costs of bottle-to-bottle recycling. Thanks to integrated ecoSAVE technology, the lowest production costs of all systems on the market.

''Smart Start principle''

The plant‘s software-based process control system gives you extremely easy and reliable operation and premium user-friendliness including automatic start-up at the press of a button, fully automatic continuous operation, permanent monitoring for direct food contact (FCC) and the storage of all relevant process parameters.

''Turnkey solutions''

   

=== Three application fields ===