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Wire & Cable ASIA – March/April 2009 69
Revil cable compounds
Founded in the ’70s, Lamplast now manufactures 35,000 tons per year of
cable compounds and is the tenth largest compounder in Europe. The product
range for cables includes Revil GE–HFFR sheathing compounds for high
extrusion speed, smooth surface and good flexibility for a wide range of LOI
(30-45%).
The following high performance grades have recently been introduced:
Revil GE 1130: excellent tensile and tear properties [LOI = 30%; •
tear strength = 18 N/mm; 12.5 MPa / 320%]
Revil GE 47: superior flame retardancy [LOI = 47%; 10.0 MPa / 145%] •
Revil–HFFR and non-FR bedding compounds: high extrusion speed, •
low adhesion to PVC/XLPE, tandem/two pass, for a wide range of LOI
(30-60%)
Lamplast’s range also includes Syntegum, PP filled and reinforced •
compounds for injection moulding of technical parts
Lamplast sas – Italy Fax: +39 0362 852409
Email: Website:
Feeder reduces colour
consumption in extrusion
The Maguire® MGF series gravimetric device for feeding colourant into extrusion
equipment enables wire and cable manufacturers to reduce colour consumption,
increase control over product quality, and document colour usage for each
production run. The MGF feeder is a low-cost gravimetric feeder, costing no
more than widely used volumetric feeders but designed to provide a much higher
degree of accuracy.
The MGF feeder accurately
monitors the loss in weight of
colourant in the hopper as the
material is fed into the extruder
by an auger. The only component
mounted on the load cell is
the hopper, and this is readily
removable from the device, as
are the auger, the auger tube,
the motor, and the load cell
bracket. As a result, there is fast
and easy access to components
for cleanout or servicing.
Volumetric feeders do not
monitor the weight of colourant
as it is fed to the extruder, and
thus generate no data about how
much of the material is actually
consumed from moment to
moment. Because a gravimetric
system generates a wealth of data on colour consumption, it adjusts colour
metering far more accurately to account for process variations.
The key to adjusting for process variations is Maguire’s Loss-in-Weight software
in the feeder control. This proprietary system scans data on colour consumption
every half-second and automatically adjusts dispensing when a predetermined
amount of accumulated error is detected. By responding exclusively to
accumulated error over a given period of time, Maguire’s proprietary software
focuses on real changes in throughput, not transitory or anomalous changes
caused by vibration, clumping, or surges. Thus the system provides real-time
control and absolutely smooth metering consistency.
Maguire Products Asia – Singapore Maguire China – China
Fax: +65 6744 3370 Fax: +86 21 588 23420
Email: Email:
Website:
Gravimetric feeder from Maguire ❍ ❍