Hennecke GmbH - machines and plants for polyurethane processing
FiberFlex - shot-to-shot filler variation Polyol/filler batches have a very short life - any change in ambient conditions (e.g. air humidity) will result in altered shrinkage behaviour. Variations of this type can be reliably controlled with our FiberFlex technology. FiberFlex also allows you to produce test samples with differing fibre contents without having to prepare a new batch each time.

 

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Process principle
In the FiberFlex process, a second unfilled (or low-filler) polyol is fed to the mixhead in addition to the polyol/ glass-fibre mix, using an additional metering piston. By changing the ratio between these two compo-nents, it is possible to vary the glass content between shots.


More flexibility and productivity
The FiberFlex process allows you to produce moulded parts with different filler contents at various foaming stations from a single batch. So, there is no need to prepare a new polyol/filler batch. Whether it's fenders, bumpers or side skirts - PU moulded parts of different filler contents can now be manufactured concurrently on the same production line, with obvious flexibility and productivity benefits.





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Wide-spread use
Following the initial implementa-tion of FiberFlex with four foaming stations, the benefits of the new technology are now used by other companies, too. The RIMDOMAT FiberFlex system shown here comprises three foaming stati-ons and is used for making bumpers and side skirts. It has been in operation since October 2001.


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FiberFlex system
FiberFlex comprises the following main components:
an additional metering piston for the second (unfilled or low-filler) polyol
supplementary control and feed units at each foaming station
a 500-litre work tank for the se-cond polyol (including insulation, temperature-control device and a pump refilling control)
hardware and software upgrade of the machine control system

 

 

 

 

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   Hennecke GmbH
   Polyurethane Technology
   Birlinghovener Straße 30
   D-53757 Sankt Augustin
   Telefon (+49) 22 41/3 39-0
   Telefax (+49) 22 41/3 39-20 4