Edition 64 (October-December, 2021)

Interview • 2
System for fill quantity measurement
– How is the ARL-45F configured?
The ARL-45F is supplied with
desiccant via a 200l drum. The
height-adjustable frame clamp and
two movable units are essential
components. These moveable units
contain a desiccant supply tank, a
drilling unit, the desiccant transport
with filling opening and a closing unit.
– How does processing of the frame
work?
The desiccant is conveyed from the
200l drum into the supply tanks. The
operator inserts a corner of the frame
into the clamp and starts the automatic
process by pressing a foot pedal. The
two drills are brought into position
and drill a filling hole on the back of
the profile. The two legs of the spacer
frame are filled with desiccant and the
two drilled holes are sealed with butyl.
Then the clamp releases the frame
again and the operator removes it from
the filling machine.
The ARL-45F drills the filling
openings on the back of the profile
and thus offers the possibility of
filling rectangles and shapes of all
conventional spacer materials. Filling
at the back of the frame guarantees
a stable process, even with delicate
plastic materials. The modern control
system and smooth operation make
working with this machine incredibly
easy.
– What are the special features of
the LiSEC ARL-45F?
The ARL-45F particularly
impresses with the optional automatic
measurement of the amount of
desiccant. With conventional
desiccant filling systems, spacer frames
are filled until no more material flow is
registered and it is therefore assumed
that at least two legs are completely
filled. Even simpler systems only fill
for a preset time without ensuring
that a material flow is occurring at
all. All these simple systems have one
crucial problem in common: if the
material flow comes to a halt due to
a blockage, the spacer frame will not
be sufficiently filled with adsorption
material. The problem here is that the
residual moisture contained in the air
gap cannot be reliably absorbed by the
insufficient amount of desiccant and
the insulating glass units runs the risk
of misting or becoming cloudy from the
inside.
In comparison, the ARL-45F
ensures that there is sufficient
desiccant in the frame. This volumetric
measurement system is based on a
precise filling level detection in the
desiccant supply tanks and guarantees
a precise recording of the adsorption
material filled. Consumption costs
can be further minimised by the
optimisation of consumption in spacer
production or by precise metering of
the desiccant amount that is adapted
to the size of the frame.
– How exactly does this automatic
filling work?
So that the measured values
obtained can be compared with the
calculated amount for the currently
Glass Bulletin | October - December, 2021 55