datasheet high-performance extruders - SML

high-performance extruders
full range of single screw extruders
More than 30 years of manufacturing
single screw extruders have given
SML a wide range of extruders suitable
for nearly all polymers that can be
extruded. While polyolefines have historically
been a strong focus of SML,
many other raw materials are now
commonly processed on our machines:
polyesters, metallocenes, barrier
resins, tie layer materials, styrenics,
TPU and compounds with a high level
of fillers such as CaCO3. Also highperformance
plastics such as fluoropolymers
and polycarbonates run
successfully on our extruders. Our
designers optimize the geometry of
every screw to produce the highest
melt quality and maximum output.
Screw diameters range from 30 to
180 mm. L/D ratios are generally 28
for smaller diameters, 28 or 33 for
SML Maschinengesellschaft mbH
Bundesstrasse 1a
A-4860 Lenzing
Austria - Europe
medium-sized and 33 for large-diameter
extruders. For extruders with
an L/D ratio of 33, vented barrels are
available.
All SML extruders have helical gear
transmissions with the drive situated
parallel to the barrel: a very compact
module. AC drives are a standard feature
for all screw diameters up to
60 mm. For larger screw diameters
(75 up to 180 mm) water-cooled ACmotors
are available optionally.
All SML extruders are equipped with
bimetallic barrels electrical ceramic
heaters and are air-cooled. Feeding
zones are adapted to raw material
processing characteristics. Our high-
performance screws, some of them
with barrier design and exchangeable
mixing elements, are either nitrided
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Fax: +43 7672 912 9
e-mail: sml@sml.at
or manufactured with armored flight
lands to increase service life. Since
the design of the extruder base frame
allows a close arrangement of several
extruders in the case of coextrusion,
adapter pipes are reduced to a minimum
length.
All SML extruders are placed on four
wheels with corresponding tracks to
allow for heat expansion and maintenance,
such as pulling the screw. A cable
track with all supplies at the rear of
the base frame makes this movement
possible. In some cases, for example
in coating lines, our extruders are
mounted into a hanging frame to save
on floor space and minimize vibrations.

high-performance extruders
full range of single screw extruders
www.sml.at
printed 02/2009
We reserve the right to technical modifications.
dimensions in mm power rating venting
barrel
Ø L/D B H1 H2 L
rated drive
power kW*)
heating
wattage kW
30 28 510 698 808 1870 20 8 –
45 28 572 490 955 2530 38 18 –
60 28 600 920 1120 3340 60 28 –
60 33 600 920 1120 3640 60 37 O
75 28 700 920 1120 2775 90 40 –
75 33 800 920 1120 3240 90 49 O
90 28 970 940 1220 3280 132 50 –
90 33 970 940 1220 3730 132 61 O
105 33 1100 940 1305 4545 160 72 O
120 33 1110 940 1305 5000 195 105 O
135 33 1300 1144 1587 5880 250 134 O
150 33 1300 1225 1665 6420 305 171 O
180 33 1380 1225 1665 7410 474 237 O
optional O
*) depending on raw material
H2
B
L
H1
available
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