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UBT - flexible ether and ester based PU slabstock production
To date, Hennecke has built more than 100 UBT lines. These
are machines that meet every demand on economic efficiency, product quality,
manufacturing flexibility, and environmental compatibility.
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Oscillating mixer for
ether/ester processing
A UBT system comes with either a stationary mixer for ether
appli-
cations or an oscillating mixer for ether/ester
production. Hennecke's portal solution 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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Density and hardness distribution
In the UBT process the polyurethane mix is applied to
an inclined dispensing plate from where it flows towards the machine
conveyor. It begins to rise at the start of the conveyor.
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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
UBT 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
UBT lines 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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See full-size image
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Layout
| 1] |
3-paper system
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| 2] |
Mixture dispensing plate |
| 3] |
Stationary stirrer mixer |
| 4] |
Calibration device
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| 5] |
Flat-topper
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| 6] |
Curing section
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| 7]
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Metering system
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See full-size image
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Space requirements
| 1] |
Polyol and isocyanate
tank farms |
| 2] |
Tanks for additional components |
| 3] |
Metering units |
| 4] |
Control cabinets
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| 5] |
Top paper guide platform
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| 6] |
Machine portal with stirrer mixer
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| 7]
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Flat-topper
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| 8] |
3-paper system |
| 9] |
Operator platform |
| 10] |
Machine conveyor with extraction duct |
| 11] |
Side paper removal station |
| 12] |
Downstream conveyor with extraction duct |
| 13] |
Top paper removal station |
| 14] |
Bottom paper removal station |
| 15] |
Roller conveyor |
| 16] |
Block cutter |
| 17]
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Transport system
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