Extrusion International 1-2017

13 / 36

13 Extrusion International 1/2017
New 800 Series Hybrid extrusion tooling
Guill announces the introduction of a new version of its
popular 800 series, known as 800 Series Hybrid. In some ex-
trusion applications that utilize crossheads and inlines, layers
of the exact same material are applied multiple times, using
a single die. This method is used to reduce the propensity
for errors caused by gels breaking through a thin wall, weld
lines, inconsistent wall thickness, plus material and process
variations. Additional errors include difficult-to-process ma-
terials and demanding applications where there is zero fault
tolerance.
Seeking to design the next generation multi-layer die to over-
come these challenges, the engineers at Guill looked for a way
to incorporate this technology into an updated version of the
800 Series. This led to the creation of the 800 Series Hybrid.
The inherent benefits of the 800 Series are retained, including
compact design, low residence time and a common deflector
bore that eliminates tolerance stack up. The challenge was to
create a hybrid design that incorporates the benefits of layer
overlapping, while reducing unnecessary complexity andmak-
ing the technology more cost-affordable for customers. This
was achieved by overlapping layers in each semi-deflector, us-
ing a single cone. The highly efficient design of the 800 Series
Hybrid reduces cost and size, as opposed to other methods of
overlapping layers.
Essential benefits of the 800 Series Hybrid include eliminating
weld lines inmaterials through patented overlapping technol-
ogy, producing a more consistent finished product; reduced
sensitivity to changes in viscosity; reduced sensitivity to chang-
es in line speed; myriad material and multi-layer application
possibilities; works in all tubing and jacketing applications
with a wide range of materials; low residence time; compact
design and a low tolerance stack-up error factor, all resulting
in improved concentricity.
The 800 Series Hybrid extrusion tool greatly reduces stagna-
tion, because overlapping layers are more inherently bal-
anced than single layers and also because each semi-deflector
is “tuned to flush.” Conventional deflectors must simultane-
ously achieve a balance between flushing, balancing and
eliminating the weld line. There is less difference between the
slowest moving material and the fastest moving material in
the deflector channels, thus making the viscosity more consis-
tent in the deflector.
CONEXTRU GmbH | Klosterstraße 19, A-3011 Tullnerbach | |
You need a new tool
for your new
pipe product?
Ɣ TXLFN DQG DW ORZ FRVW ±
VSHFLDOO\ PDGH IRU
\RXU UHTXHVW
Ɣ LQ PRQR RU PXOWL OD\HU
or for coating in your
FXUUHQW SLSH SURGXFWLRQ
CONEXTRU ENGINEERING FOR EXTRUSION
<RX ZDQW WR PRGLI\ \RXU H[LVWLQJ WRROV WR PXOWLOD\HU DQG
IRU LQWHUQDO SLSH FRROLQJ WR PDNH D QHZ SURGXFW"
Then CONEXTRU GmbH LV WKH SDUWQHU IRU \RX ±
WKH PRVW H[SHULHQFHG FRPSDQ\ LQ SLSH WRRO GHVLJQ
The development of new tools for pipes is our
profession and passion – for more than 25 years.