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Oscillating mixer for processing ether/ester
A QFM system comes with either a stationary mixer for ether
applications or an oscillating mixer for ether/ester production. Hennecke's
portal solution that is based on the use of two mixers has been a successful
option in those cases where production is frequently changed from ester to
ether processing and vice versa. The advantage of such a portal is that
the machine does not have to be reconfigured when production is switched
and no unwanted foreign raw-materials will contaminate the new production.
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See full-size image
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Fall-plate system ensures optimised
density and hardness distribution
On fall-plate systems, the PU mixture only has to rise by one
third because the other two thirds of the foaming process take place downwards,
which reduces the mixture's friction with the side walls. This fall-plate system
plus the flat topper that will be described below ensure that the produced blocks will have almost
rectangular cross-sections and an excellent density and hardness distribution.
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Excellent raw-material yield
Flexible ether-based slabstock made on a Hennecke system with integrated
flat
topper has the following key features:
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better material yield than conventional
domed-block processes |
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blocks with optimised rectangular cross-sections
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higher material yield because hard
and thick outer crust is made into useable foam |
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improved density and hardness distribution |
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thin and smooth surfaces on all block sides |
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Controllable
foam properties
The open-cell PU material's properties,
such as load-bearing capacity, cell structure, elasticity,
expansion, density and permeability can be adjusted
at high precision and reproducibility on the basis
of differentiated machine settings and formulations.
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Customised automation
QFM systems have a network by which all
data processing and control levels are interlinked. Tangible advantages are:
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process-integrated control,
monitoring and data management
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fast on-the-fly formulation and machine
parameter changes |
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short transitional foam pieces when colours and
formulations are changed |
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accurately reproducible production parameters |
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great process reliability
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elimination of production line adjustment
errors caused by operators
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fewer human resources needed |
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NovaFlex® - environmental
protection to the point of perfection
QFM systems come as an option
with Hennecke's patented NovaFlex® system. This
is a technology that allows manufacturers to make
low-density slabstock (< 20 kg/m³) without
using typical blowing agents, such as CFCs or
methylene chloride because NovaFlex® production
is based on naturally-occurring CO2
as a physical blowing agent instead.
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High-quality film and sheeting
material
Hennecke's equipment ensures
that slabstock can be easily further processed
into high-grade sheeting of any thickness.
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Top performance
Given a total mixture output
of 500 l/min, any foam system can be continuously
made into high-grade slabstock of any length,
at widths of up to 2400 mm and heights of up to
1500 mm (depending on density).
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See full-size image
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Layout
| 1] |
3-paper
system |
| 2] |
Mixture dispensing
plate |
| 3] |
Stirrer mixer |
| 4] |
Calibration device
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| 5] |
Fall-plate system
(continuously variable) |
| 6] |
Flat-topper |
| 7] |
Curing section
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| 8] |
Metering system
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See full-size image
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Space
requirements
| 1] |
Polyol
and isocyanate tank farm |
| 2] |
Tanks for additives
and colour components |
| 3] |
Metering units |
| 4] |
3-paper system
|
| 5] |
Process and control
centre |
| 6] |
Top paper guide
platform |
| 7] |
Machine portal
with stirrer mixer |
| 8] |
Main operator platform |
| 9] |
Fall-plate section
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| 10] |
Flat-topper |
| 11] |
Machine conveyor
with extraction duct |
| 12] |
Side paper removal
station |
| 13] |
Downstream plate
conveyor with extraction tunnel |
| 14] |
Top paper removal
station |
| 15] |
Roller conveyor |
| 16] |
Bottom paper removal
station |
| 17] |
Block cutter |
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