EuroWire November 2015

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Feature
Compounds, coverings & extrudingmachinery
November 2015 47
Guill Tool has introduced Series 725, a co-extrusion
crosshead design for tray cable applications. With all
stainless steel construction, Series 725 offers machine
builders and end users many advantages, including the
patented Guill Seal Right system of self-aligning tapered
deflector and body design.
Series 725 was developed by Guill Engineering, in
partnership with a customer, to convert a production line
from a tandem line with two heads a distance apart into a
co-extrusion line with a single head applying both layers
of PVC in a single operation. The efficiency and improved
profit potential from such a configuration is substantial,
according to Guill sources.
Other end user benefits of this new co-extrusion crosshead
include a considerably shorter changeover time (one head
is better than two, in this case), less scrap with a single
head setup, improved product quality from the increased
adhesion between layers, as melt adheres to melt rather
than extrudate, plus the inner layer is not exposed to the
environment, allowing contaminates between the layers.
Additional features of this new crosshead include
multi-port spiral flow, easy disassembly and restart, positive
seals for leak elimination, adaptable to all extruder brands,
maximum thru-core of 1.75" and maximum die ID of 2",
first layer fixed and second adjustable, the patented Guill
Feather Touch concentricity adjustment, vacuum port and
the ability to accept two extruders from the same side via
the heated manifold assembly.
Series 725 is furnished with a tool kit and detailed
operator’s instruction manual.
Guill Tool & Engineering – USA
Website:
Series 725 co-extrusion
crosshead
▲ ▲ Guill Series 725 shown here on portable crosshead stand with integral alignment swing
gates to assist with disassembly and restart…another Guill design for extruders