winder series W900 calendering0 pages

e x trusion
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WINDING TECHNOLOGY
SERIES W900 CALENDERING

Series W900 winders
For rigid lm roll stock to be sold off the line, SML
recommends the winder series W900. Built for
frequent roll change, they are operated with a central
drive for gap winding mode and can be used with
both 3-inch and 6-inch pneumatic winding shafts.
Optionally, the SML’s series W900 can be tted with
friction shafts and dual direction winding. SML’s
turret winder series W900 work with an accumulator
up front to allow for manual start-up of the new roll
while the web is stopped.
This concept makes the winder series W900 easy and
safe to operate. The edge trimming and slitting station
is placed between the accumulator and the winder.
Guide rollers or mechanical guides redirect the trims to
the edge trim granulator, situated next to the extrusion
line. The lm enters the winder through a take-off that
includes the cross-cutting device.
Once the required roll length or outside diameter is
reached and the new, prepared core is in position,
the cross cut is actuated automatically, and the
accumulator takes in the lm produced. For sensitive
lms, the cross cut can also be done manually by the
operator.

From the take-off a set length of lm is released so the
operator can manually attach the lm to the new core
in place. The shaft is then accelerated, and the lm,
stored in the accumulator, is released. At the
same time, the photocell controlled gap winding roller
arrangement is lowered to its working position, and
the winder is back in operation.
Depending on customer requirements, different
accumulators are available:
•

The driven accumulator working from bottom to top
position, where movement and web tension are
generated by a servomotor. This system is suitable
for gauges as low as 150µm and line speeds up to
70 m/min.
• With gravity accumulator working from top to
bottom position where web tension is generated by
gravity. This system is available with limited width
and winding speed.

www.sml.at
SML MASCHINENGESELLSCHAFT MBH

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BUNDESSTRASSE 1A

A-4860 LENZING

AUSTRIA - EUROPE

PHONE: +43 7672 912 0

FAX: +43 7672 912 9

EMAIL: SML@SML.AT

21.10.2010 11:19:44 Uhr