datasheet winder series W4000 cast - SML

WINDING TECHNOLOGY
SERIES W4000 CAST
www.sml.at
ex
100 %
Turret winder for stretch wrap film
Series W4000 stretch fi lm winders are available in
differing versions for a variety of fi lm dimensions. A
single turret is used for 4-up widths, while a double
turret is employed for 8-up and 10-up variations.
This allows the processing of one side of the fi lm in
the upper turret and the other side in the lower turret.
Lastly, for 6-up widths, either a single turret with
centre support is utilised, or a double turret.
The winders operate exclusively on 3-inch shafts with
roll diameters of up to 400mm and combine central
winding with a contact mode. Series W4000 winders
are extremely robust with strong side walls and heavy
reinforcement profi les across the entire width for
smooth high-speed operation. They are designed
for maximum mechanical speeds of 725 m/min or
1,000 m/min.
During operation, the fi lm is fed to the winder from an
oscillating frame and enters the cutter stand from
above before passing through a two-roller S-wrap,
which separates line and winding tension. Following
edge and bleed trimming in the cutting station, which
consists of a special 3-roller unit, depending on its
width, the fi lm is transported to either one or two
turrets. Each turret has an individual tension measuring
roller, while an ultra-light, carbon fi bre contact roller
ensures sensitive winding. Carbon fi bre is also used for
trusion
the winding shafts of the two winding stations in the
turret and a sophisticated electronic shaft vibration
control prevents critical shaft speeds.
When indexing, the winder operates a swivelling,
stationary knife with electrostatic lay-on. In order to
remove the rolls from the winder on a trolley, the winding
shafts are swung out at an angle of roughly 30˚ with the
help of a supporting arm. A cycle time of 60 seconds
is ensured by the fi tting of each turret with a separate
magazine and a corresponding trolley with integrated
core feeding device.
Series W4000 winders have large 15-inch TFT colour
operating screens. A PLC offers individually adjustable
winding taper curves for various products. Moreover,
error diagnosis tools and a modem connection enable
the line operators to carry out unproblematic servicing
and trouble-shooting.
SML MASCHINENGESELLSCHAFT MBH BUNDESSTRASSE 1A A-4860 LENZING AUSTRIA - EUROPE PHONE: +43 7672 912 0 FAX: +43 7672 912 9 EMAIL: SML@SML.AT

We reserve the right to technical modifi cations. Printed 10/2010.
WINDING TECHNOLOGY
SERIES W4000 WINDERS CAST
product
confi guration
www.sml.at
Application stretch wrap fi lm
typical machine rolls on 3-inch cores
Thickness range 8 - 50µm
Maximum net fi lm width 4-up single turret (x times 500mm)
6-up single turret with center support or double turret
8-up and 10-up double turret
Maximum mechanical 725 m/min or 1000 m/min
line speed
Winding mode central winding in contact mode with winding shafts
Winding tension 15 - 100 N/m
Contact roll pressure 50 - 500 N/m
Roll start up device electrostatic lay-on
Maximum mechanical 400mm
roll diameter
SERIES W4000
SERIES W4000
Cross-cutting device swivelling knife
Cycle time 60 sec
Core feeding manual or automatic
Roll handling manual or with automatic trolley
SML MASCHINENGESELLSCHAFT MBH BUNDESSTRASSE 1A A-4860 LENZING AUSTRIA - EUROPE PHONE: +43 7672 912 0 FAX: +43 7672 912 9 EMAIL: SML@SML.AT
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