TrueWeigh Control TWC1-120 pages

TPEX025-1011

EXTRUSION CONTROL
TM

TRUEWEIGH CONTROL TWC1-12

ACCURATE,
PRECISE
EXTRUSION CONTROL
TrueWeighTM Gravimetric Control System allows extrusion processors to put their equipment on “cruise control.” It tracks material
being fed to the extruder and automatically adjusts screw rpm and
the haul-off device to maintain a consistent product output regardless of changes in raw materials, ambient conditions or processing
variables.
The system offers functionality that suits both mono-layer and
co-extrusion applications in film, sheet, extrusion coating, pipe,
profile, tubing and wire & cable extrusion.
TWC Controller

AUTOMATES EXTRUSION CONTROL BY WEIGHT
Varying process conditions, backpressure, material bulk density, and
even operator skill sets can reduce
extruder throughput and affect
productivity and profitability. This
easy-to-use extrusion control system
gives processors complete visibility
and control over throughput and
finished product dimensions.
TrueWeigh coordinates operation of
up to twelve (12) extruders, governing
not only total product throughput and
dimensions, but also the relative
weight of different layers.
Processors realize increased yield
through precise, consistent control over
extruder output and weight per length
to maintain consistent rate and product
thickness. Product quality can be
improved with precise layer-ratio
control in co-extruded film or sheet, and
through better dimensional stability in
tubing, pipe and profile wall thickness.

■

Tightens tolerances, saves material costs
TrueWeigh allows processors to run products at minimum thicknesses (+/- 0.5%
of set point). The extrusion control system synchronizes the extruder(s) and the
haul-off device, optimizing stability of the production process and creating less
start-up scrap by achieving production speeds quicker, and reducing or eliminating
off-spec scrap.

■

Easy-to-use, intuitive touch screen
5.7 inch LCD touch screen controller with full color graphics allows quick and easy
set-up. User-friendly screens are configurable to match each specific extrusion
process type. Simple menu driven touch screens use a Q&A approach to guide the
operator through set-up. The operator can monitor the extrusion control set points,
the haul-off control data, current and past alarm status and complete
management of material inventory data.

■

Quality maintained during transitions
Advanced programming ramps extruder(s) and haul-off drives synchronously. This
allows the system to make smooth transitions from one line output setting to a
new target output while maintaining product quality.

U-1