Rubber Cover Expander Roll Banana Roll Wrinkle Removing Bow For Converting Machine
Product Overview
The expander roll, also known as Spreader Roll, Bowed Roll, Curve Bar Expander, Banana Roll, Camber Roll, or Wrinkle Removing Roll, is designed to eliminate wrinkles in various industrial applications. Most expander rolls are driven by web tension without requiring additional power.
Applications
Widely used in textile processing machines, plastic converting machines, paper industries, manufacturing, processing, printing, laminating, coating, batching, winding, and re-winding operations.
Technical Specifications
| Parameter |
Specification |
| Diameter |
100-1000mm |
| Working Speed |
Up to 3000m/min |
| Shell Material |
Chrome, Rubber Cover, Stainless Steel |
| Optional Features |
Stainless steel bearing housing |
| Primary Function |
Spreading sheet material to eliminate wrinkles |
Working Principle
The key difference between a standard straight roller and an expander roller lies in the axis curvature. The arc-shaped axis creates tension across the material width, preventing wrinkles during processing. As material contacts the curved roller surface, edges move outward, creating uniform tension perpendicular to the roller surface.
Material Options
Hard Chrome: Delivers high torque capacity, excellent sealing, free rotation, and leak-proof operation.
Rubber Cover: Provides superior abrasion resistance and extended service life. Features unique end structures to prevent cover expansion/contraction.
Key Features
- Bearing ring internal structure for durability
- Low swing torque design with bearings installed in rubber sleeves
- Smooth rubber surface that won't damage materials
- Adjustable roller face angle for precise control
- High temperature resistance, abrasion proof, anti-adhesive properties
- Maximum operating speed: 2000m/min
- Multiple surface treatments available (sand-blasting, chrome plating, grooving)
- Compatible with cutter machines, re-reeling machines, coating machines, and paper machines
About Huatao Group
Founded in 2008, Huatao Group is a leading manufacturer of industrial rollers with over 15 years of experience. We specialize in rollers for:
- Paper Industry: Forming rollers, vacuum couch rollers, press rollers, dryer cylinders, and more
- Plastic & Rubber Industry: Chill rollers, stretching rollers, treatment rollers, and coating drums
- Nonwoven Fabric Industry: Guide rollers, embossing rollers, and cooling rollers
Our products are exported to 96+ countries, backed by our commitment to innovation, reliability, and customer satisfaction. We understand unique customer requirements and match them with superior quality solutions from our network of specialized manufacturers.
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