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Vacurema technology: Difference between revisions

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'''* Food contact compliant decontamination'''
'''* Food contact compliant decontamination'''
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  
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.  
for the end products produced.  
'''* IV stability through vacuum treatment'''
'''* 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.   
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
 
'''* Melting under vacuum'''
 
The patented pre-treatment at raised temperature and in high  
The patented pre-treatment at raised temperature and in high  
vacuum before the extrusion process removes moisture and  
vacuum before the extrusion process removes moisture and  
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a stable process environment. This prevents any hydrolytic and  
a stable process environment. This prevents any hydrolytic and  
oxidative decomposition of the melt in the extruder.
oxidative decomposition of the melt in the extruder.
'''Low thermal stress'''
 
* '''Low thermal stress'''
 
The very short extruder screw without additional extruder  
The very short extruder screw without additional extruder  
degassing reduces the thermal stress on the material through  
degassing reduces the thermal stress on the material through  
minimised dwell time.  
minimised dwell time.
'''Large area ultrafine melt filtration'''
* '''Large area ultrafine melt filtration'''
 
EREMA filter systems have very large active filter surfaces. This  
EREMA filter systems have very large active filter surfaces. This  
enables filtration with up to 32 μm fineness at low pressure.  
enables filtration with up to 32 μm fineness at low pressure.  
The result is highly clean pellets.
The result is highly clean pellets.
* '''Compact design'''
* '''Compact design'''
Thanks to their compact design, VACUREMA
 
®
Thanks to their compact design, VACUREMA  systems require much less space than other systems.  
  systems require  
 
much less space than other systems.
* '''Minimum production costs with ecoSAVE'''
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  
Electricity accounts for 38
% of the costs of bottle-to-bottle  
recycling. Thanks to integrated ecoSAVE
®
technology,  
VACUREMA
®
systems stand out through the lowest production  
costs of all systems on the market.
costs of all systems on the market.
Smart Start principle
* '''Smart Start principle'''
The plant‘s software-based process control system gives you  
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.
extremely easy and reliable operation and premium user-friend
* '''Turnkey solutions'''
-
Erema delivers turnkey systems with support from one contact for the entire recycling process: sorting – washing – decontamination – extrusion – quality control – end product.
liness 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
We deliver you turnkey systems with competent support from  
one contact for the entire recycling process: sorting – washing  
– decontamination – extrusion – quality control – end product.
   
   
=== Three application fields ===
=== Three application fields ===


Bottle-to-Bottle
'''Bottle-to-Bottle'''
rPET pellets which not only fulfil but exceed all current minimum requirements with regard to direct food contact for PET packaging solutions: that is the end product in bottle-to-bottle recycling with VACUREMA Prime technology. This high-end PET extrusion system features two crystallisation dryers operating in batch mode. A compact, space-saving all-in-one solution which achieves IV increases and a remarkable cleaning effect. As the user you are flexible at all times and can react quickly to current market requirements: whether it‘s decontaminated, pre-dried and crystallised rPET flakes or high-quality, melt-filtered rPET pellets – products produced using VACUREMA Prime technology fulfil the respective criteria of the FDA, EFSA and many major brand owners.  
rPET pellets which not only fulfil but exceed all current minimum requirements with regard to direct food contact for PET packaging solutions: that is the end product in bottle-to-bottle recycling with VACUREMA Prime technology. This high-end PET extrusion system features two crystallisation dryers operating in batch mode. A compact, space-saving all-in-one solution which achieves IV increases and a remarkable cleaning effect. As the user you are flexible at all times and can react quickly to current market requirements: whether it‘s decontaminated, pre-dried and crystallised rPET flakes or high-quality, melt-filtered rPET pellets – products produced using VACUREMA Prime technology fulfil the respective criteria of the FDA, EFSA and many major brand owners. If IV values of > 0.9 dl/g or very high throughputs (> 2500 kg/h) are required, EREMA can offer VACUREMA technology also in combination with an SSP solution from Polymetrix.
If IV values of > 0.9 dl/g or very high throughputs (> 2500 kg/h)  
are required, EREMA can offer VACUREMA technology also in combination with an SSP solution from Polymetrix.  
 
Approved for direct food contact
Operating mode 1 
100
% rPET pellets
Operating mode 2 
100
% rPET flakes
Operating mode 3
100
% rPET flakes
and rPET pellets
(simultaneous)
Bühler Thermal Processes AG
a former Bühler Group Company
Brand
Owner
appr
O
ved
Technical benefits
Minimum thermal stress and
minimum discoloration
thanks to
single energy input, preheated
material and shortened extruder
length
Batch operation
– guaranteed,
adjustable dwell times for every
single flake in the two crystallisation
dryers ensure maximum cleaning
efficiency
Highly efficient decontamination
fulfils and also far exceeds all
well-known minimum purity
requirements for direct food
contact already after the batch
process
FDA approved
(EFSA approval
requested via customers and
obtained), certification from major
brand owners
Large area ultrafine melt filtration
Stable PET melt processing
with
IV increase of up to 6 to 10
%
AA (acetaldehyde) content in
pellets less than 1 ppm –
possible
in combination with optional pellet
flusher (no flusher required in the
case of pre-drying before preform
production)
Possible to process flakes from
cooking oil bottles
How it works
Two parallel vacuum crystallisation dryers
are each filled
with amorphous, washed PET flakes via a vacuum lock. The
crystallisation dryers operate in what is referred to as batch
mode. The exceptionally high level of purity of the rPET that is
produced is achieved by an
exactly defined and guaranteed
minimum treatment time for every single thin-walled
PET flake
in high vacuum and at high temperature.
Purity and IV requirements placed on the end product
(rPET pellets) can be adapted individually by selecting
appropriate batch times.
The two identical crystallisation dryers are placed
immediately upstream of a continuous VACUREMA
®
Basic extrusion system.
Economic benefits
rPET pellets identical in
consistency and appearance to
virgin material,
choice of
amorphous or crystalline
Low production costs
through
specific energy consumption of
0.32 to 0.36 kWh/kg
Total production costs for rPET
from PET flake only approx.
0.10 euros per kg of finished
BTB pellets
Compact, space-saving design
(feeding system not shown)
Feeding
(discontinuous)
PET Flake
PET Flake
Vacuum lock
Vacuum lock
Vacuum pump
Vacuum
pre-treatment
unit
(discontinuous)
Vacuum reactor,
continuous
operation
VACUREMA
®
Basic
extrusion
system
32
μ
m high-performance filter
with large active filter area
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