Bowed Spreader RollersTo meet the diversified requirements of our prestigious clients, we are engaged in offering Bowed Spreader Rollers that is available in a wide variety of specifications as per the exact requirements of clients. Before dispatching this bow roll at clients end, we examine it on various aspects like durability, sturdiness, corrosion resistance to ensure its flawlessness. We use this Bowed Spreader Rollers in winding & re-winding, textile machines, plastic converting machines, laminating, coating, batching, etc. Further, it is used for removing wrinkles. Clients can purchase it from us at pocket friendly rates.
Bow Roll is called as Bowed Roll, Curve Bar Expander, Bowed Spreader Roll, Spreader Roll, Wrinkle removing Rolls.
The kinds of surfaces the Bowed Spreader rolls are available in include hard chrome and rubber surfaces. It is also provided with PTFE covering for non-sticking applications. Hard chrome surface bow Rolls are utilized in applications where speed is over 300 meters per minute. The more speed, the bigger diameter is utilized for reducing the rpm of the roll. Bow rolls operates at the time when proper lead-in and lead-out distance are achieved, and the roll is kept in appropriate warp angle with web material.
Bow angle adjusting worm-worm wheel gearbox with hand wheel and counter pedestal bearing block is provided with the rolls for making warp angle adjustments. It makes it possible to make adjustments in bow angle at 360 degree warp angle. As the rolls achieves maximum wrinkle removing, it is recommended to stop making adjustments in the bow angle and set the roll on bow locked position. It is suggested to not make any change in the bow setting. An arrow indicates on shaft position and showcases the bowed position of the Roll.
For LDPE, LD, PP or other web materials, Bow Rubber expander roll, Slat Expander Rolls or scroll rolls does not work to remove wrinkles. This Roll is available in diameter 140mm, if the web width is over 1000mm. In case the web tension is not sufficient for driving the roll, additional drive such as sprocket or pulley can be provided as per requirements.
All kinds of Expanders/ Spreaders are provided in Bow angle adjustable type in order to make bow angle adjustments easier for the operator when the machine is in working condition. The roll can be fixed at best bow warp angle achieving maximum slit separating effects, spreading, and wrinkle removing. The roll diameter is dependent on the web materials speed, maximum web width and also the mounting center.
E.G. For 650 mm web width and web speed of less than 50 meters/min, a 90mm bow roll is apt with a 30mm shaft diameter. For web width of 4500mm, speed of 1000mtrs/min requires minimum 160mm diameter roll and 75mm or above shaft diameter. Customers can select the mounting type of the bowed roll. They can select between foot or flange mounting as per specific requirements and applications.
Specifications:- Uniform stress
- Fast line speed
- Bear high pressure
- Corrosion preventive
- Stainless steel, alloy casting and carbon steel are used.
- Technics : Precision Cast
- Surface :Mirror or Satin polished, Galvanized.
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