Extrusion International 5-2016

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Hall 9, Booth A55
Extrusion International 5/2016 50
KREYENBORG: all for material handling
KREYENBORG Plant Technology GmbH will be presenting
information regarding their wide assortment of efficient
bulk material handling in the plastic-, food- and chemical in-
dustries.
Particular focus this year will be on the range of topics regar-
ding drying and crystallizing, as well as comprehensive soluti-
ons for bulk-material handling processes.
Drying. Continuously. In Minutes Instead of Hours.
The range of applications of the KREYENBORG Infrared Rotary
Dryers IRD is nearly unlimited. The IRD is used for crystallizing
and drying virgin or regrind materials for a series of plastics,
such as ABS, EVA, HDPE, PC, PEEK, PET, PLA, PPS, PTFE, TPE,
and TPU. Through the use of the continuously functioning IRD,
the need for energy-intensive processing using dry air is com-
pletely eliminated, easily resulting in energy savings of an ave-
rage of 30%. The raw material is heated directly with infrared
light that works especially gently, so that the vaporizing moi-
sture is diverted from the core of the material toward the out-
side. The raw material is conveyed evenly through the
machine, and by the rotating of the drum carefully circulated
and evenly heated. This eliminates clumping. The low rotation
speed prevents breaking, abrasion and raising of dust from the
product. Moreover, in a multitude of applications, a retrofitting
of the IRD into existing plants significantly increases plant
throughput, as well increasing the quality of the product.
Through optimal, continuous, and constant pre-drying of the
material, the load is taken off of the extruder.
Drying: KREYENBORG PET-BOOSTER
For the first time, KERYENBORG will present their new PET-
BOOSTER. This continuously operating system dries PET wit-
hin 7-10 minutes. Focus here is specifically on applications in
extrusion of plastic films and fibers with degassing extruders
(twin-screw, planetaryand multi-screw-extruders). Varying le-
vels of input moisture that results in process fluctuations in the
extrusion process (as well as fluctuations in end-product qua-
lity) can be eliminated with the KREYENBORG PET-BOOSTER.
By feeding pre-heated material with a consistent, low input
moisture level, a smaller extruder and vacuum degassing sy-
stem can be used. With existing plants, a quick 30% increase
in throughput can be realized with the installation of the PET-
BOOSTER. A further positive side-benefit: the toxic liquid pre-
cipitate from the vacuum system is reduced by up to 50%. The
investment is thereby amortized in a very short period of time.
Coating of Granulates
A specialty application of the IRD lies in the coating of granu-
lates with powders or liquids. The constant recirculation of the
materials with simultaneous heat input guarantees a very ho-
mogenous moistening and adhesion of the coating medium to
the granulate.
New Product! Pneumatic Conveying Systems
At the K, KREYENBORG will present, for the first time, their
new pneumatic conveying system.
Owing to many years’ experience with the conveying of
poorly- flowing bulk materials, as for example bottle flakes or
film flakes, that still present a challenge, KREYENBORG has in-
corporated hopper loaders into the process. The conveyers are
distinguished by their container geometries that avoid brid-
ging or even have internal bridge-breakers. The containers
come standard with an extremely large outlet. The conveyors
have a compact central filter unit with a large filter area, to
meet the requirements for dusty regrind materials.
The conveying systems can be combined with additional
KREYENBORG components for complete systems and inte-
grated into KREYENBORG PLC-Control. This enlarge KREYEN-
BORG’s turn-key solutions excellence for bulk material
handling.
Mixing. Blending Bulk Materials. Fast, Precise, and Gentle
KREYENBORG mixing- and feeding systems are distinguished
by a very specific focus on the particular bulk material used.
The KREYENBORG Universal Quick Mixer features extremely
precise mixing and homogenizing of bulk materials with limi-
ted flow properties. The KREYENBORG Masterbatch Mixer on
the other hand shows its value through fast and gentle mixing
and homogenizing of sensitive bulk materials.
The KREYENBORG silos, including its fiber- and flake silos, are
used where conventional systems no longer work reliably. Par-
ticularly with storage and discharging of very light bulk mate-
rials in the plastic and food industries, dependable material
handling is essential for the process. Typical bulk density of
0.02 km/dm³ and an edge length of 30 mm are no problem
for KREYENBORG silos.
IRD Infrared Rotary Dryer