HELIBAR®
Single screw extruders



HELIBAR®
EXTRUDEX is presenting it's revolutionary HELIBAR® single screw extruder system, basing on an extruder barrel with a heliconally grooved feeding section and an axial or also heliconally grooved plastification cylinder in combination with an especially designed barrier type screw with shearing an mixing sections.

Compared with conventional single screw extruder concepts with smooth cylinder the Helibar® system offers impressive advantages in terms of:
specific throughput
capability of pressure build up
melt-temperatures
homogenization
cooling capacity
processing of wall-sliding thermoplastics
abrasive wear
residence time of the melt in the processing unit
efficiency and economy



HELIBAR® - an innovative single-screw extruder with improved plastification and throughput


The HELIBAR® advantages in brief:
Optimized pressure build up and material conveying
additional force feeding through the grooves
therefore higher specific throughput


Pressure build up characteristics
lower partial pressure along barrel and screw
less wear
higher pressure stability
higher pressure possible


Lower pressure in the solid's channel
lower abrasive wear in the solid's channel
required cooling reduced


Processing of "wall-sliding" thermoplastics improved
force feeding through the grooves prevents wall sliding


Shorter residence time due to high throughput and low volume in the processing unit


Plastification and mixing optimized
additional separation of the melt flow in the grooves
improved plastification due to better heat transfer between cylinder and solids's surface
additional separation of the melt flow in the grooves
shaving of the solid's or the pre-melt surface
increase of the heat transfering surface


Better control of the melt-temperature
surface / volume relation is better with smaller extruders


Improved efficiency
lower cooling capacity needed
lower specific mechanical energy consumption


Much smaller and more compact machines can be used in comparison to conventional state of the art extruders.




Pressure along the barrel: At the same operating pressure the HELIBAR®-System is characterized by a much lower pressure level along the processing unit compared to an extruder with smooth barrel.


Fields of application for the HELIBAR® principle:
high performance processes in pipe, profile, cable, sheet, blown film extrusion
blow molding applications (Over 150 extrusion units are in duty for this purpose during a period of 3 years!)
injection molding processes
effective processing of wall sliding thermoplastics
wherever compact machine design is necessary
processing of sensitive or reactive materials at low temperatures
processing of powders alternative to pellets


Alternative to conventional machines, with equal output:
improvement of process characteristics and quality
more compact machine design
more economical processes
more careful material treatment


equal product quality:
higher throughput, at lower melt-temperature
more economic processes


HELIBAR® is a registered trademark of EXTRUDEX Kunststoffmaschinen GmbH.
The HELIBAR® design is patented.


Literature:

E. Grünschloß: HELIBAR ® – A new style Single Screw Extruder with improved Plastification and Output Power.
Download pdf-file

E. Grünschloß: A Powerful Universal Plasticating System for Single-screw-extruders and Injection-moulding Machines
Download pdf-file




Many thanks for the sponsoring of our prototyp trials with your material: Borealis AG, Borealis A/S (PE,PP); BASF AG (PS); DSM Deutschland GmbH (PE); Dow Deutschland Inc. (PE); Ticona GmbH (GUR); Elastogran GmbH (TPU); EMS-Chemie AG (PA); Granulat 2000 Kunststoff Compound GmbH (Soft PVC); Röhm GmbH (PMMA, PC); Kraiburg TPE GmbH (TPE)


All data subject to change without notice in accordance with technical modifications!