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BOWED SPREADER ROLL |
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Bow Roll is
also known as Spreader Roll, Bowed Roll, Curve bar Expander, Banana Roll, Camber Roll, Wrinkle removing Rolls, Bow Rolls are available in rubber surface, hard chrome surface and also Teflon covering for non-sticking applications. Hard chrome surface bow Rolls are used where speed is more than 300 meters minutes. If the speed is more, the bigger diameter is used to reduce the rpm of the roll. Bow roll works only when there is proper lead-in and lead-out distance and kept the roll in proper warp angle with web material. To do such warp angle adjusting all rolls are supplied with bow angle adjusting worm-worm wheel gearbox with hand wheel and counter pedestal bearing block. By use of this it is possible to adjust the bow angle at 360 degree warp angle. When the Roll get maximum wrinkle removing, stop the bow angle adjusting and put the roll on bow locked position. Do not do any change in the bow setting bow warp angle with web materials is set. On shaft bow position indicated an arrow showing the bowed position of the Roll.
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Rubber sleeve covered |
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Metal expander with hard chrome plated surface for high speed application |
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Teflon sleeve for non-sticking application |
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Bowed Spreader Roll with
pedestal mounting |
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Bowed Spreader Roll with
pedestal mounting
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Bowed Spreader Roll with foot
mounting
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Bowed Spreader Roll |
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Bow Rolls are known as
Banana Rolls, Spreader
Rolls, Curve rubber
expander, useful for
removing of wrinkles, slack
edges, spreading and slit
separation. Most of the
Expander Rolls are driven by
web tension itself without
any extra drive. Used in
Textile processing machines,
Plastic converting machines,
Paper Industries, in
manufacturing, processing,
printing, laminating,
coating, Batching, Winding
and Re-Winding.
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Metal is used for before
high-speed Paper slitter
re-winders for wrinkle
removing and after slitting
to separate slits. This type
of Roll having heavy weights
and paper tension itself not
sufficient to drive the Roll
so extra pulley is provided
to drive the metal Expander
Roll.
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Teflon Expander is
particularly used before size
press where wet working and
extra drive is required for to
get roll rotate. Teflon rubber
bow roll having application
where sticking of substance on
roll is problem. |
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All type of Expanders is
available in Bow angle
adjustable type so one can
adjust the bow angle when
the machine is in working
condition. Fix the Roll at
best bow warp angle it gets
maximum spreading, wrinkle
removing or slit separating
effects. The diameter of the
Roll depends on speed of web
materials and maximum web
width and also the mounting
center.
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For 650 mm web width and web
speed of less than 50
meters/min a bow roll of
90mm is sufficient with a
shaft diameter of 30mm. For
4500mm web width,
1000mtrs/min speed requires
minimum diameter of 160mm
roll and shaft diameter of
75mm or above. Bowed Roll is
available in foot or flange
mounting as per specific
requirements
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Static Eliminator
| Ink
Circulating Pump |
Anilox Rollers |
Cooling Rollers |
Air Expanding Shaft
| Air Chucks |
Quick Locks |
Safety Chucks |
Cloth Guider |
Tyre Cord Aligner |
Web Aligner
| Turn Bar Systems
| Surface Winder
| Conveyor Tracker
| Tension Control Brake
| Bow roll |
Aluminium Roll |
S.S. Roll
| Metal Expander
Roll
| Polyband Expander
| Curve Bar Expander
| Slat Expander
| Scroll Roll |
Banana Roll |
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