Product Overview
High-Speed Center-Drive Slitting Equipment converts wide parent rolls into multiple finished rolls through controlled unwinding, web guiding, longitudinal slitting and center-driven rewinding. The center-drive winding system regulates torque as the finished-roll diameter increases, supporting controlled winding conditions throughout the production cycle.
The equipment can be configured for plastic films, paper, aluminum foil and laminated webs according to material thickness, parent-roll size, finished-roll dimensions and required winding hardness.
Material Compatibility
PET, BOPP, PE and CPP films can be processed with web tension matched to thickness, stiffness and elongation.
Paper and aluminum foil require controlled tension and suitable knife settings to maintain stable feeding and clean slit edges.
Laminated structures require coordinated tension and winding settings according to layer construction, total thickness and finished-roll requirements.
Center-Drive Rewinding
Direct Torque
The rewind drive applies controlled torque through the winding shaft. The torque setting changes with roll diameter and material behavior.
Taper Tension
Tension can be reduced through the winding cycle to suit the material and target roll structure.
Roll Hardness
Winding torque, web tension and contact pressure are adjusted together to establish the required finished-roll hardness.
Key Selection Criteria
Working Width
The working width should accommodate the parent-roll width, finished-roll layout and required edge trim.
Slit Width
Minimum slit width depends on material thickness, knife arrangement, core dimensions and finished-roll diameter. The slit layout should be confirmed before selecting the knife system.
Roll Diameter
Maximum unwind and rewind diameters determine parent-roll capacity, finished-roll size and material handling requirements.
Core Size
3-inch and 6-inch cores are common configurations. Core diameter and core length should match the finished-roll specification.
Production Advantages
Speed Control
Servo-controlled unwinding, web movement and rewinding coordinate the material path during continuous production.
Winding Consistency
Center-drive rewinding adjusts winding torque as roll diameter changes, supporting controlled roll density and edge alignment.
Slitting Flexibility
Razor and shear knife arrangements can be selected according to material type, thickness and required slit-edge condition.
Typical Applications
Flexible Packaging
Converts packaging films and laminated webs into narrower rolls for subsequent printing, laminating or packaging operations.
Film Converting
Suitable for PET, BOPP, PE, CPP and related films requiring defined finished widths and controlled winding.
Paper and Foil Processing
Used for paper and aluminum foil where web tension, slit position and finished-roll geometry require controlled processing.
Label and Industrial Materials
Suitable for narrow-width roll production where repeatable slit positioning and finished-roll formation are part of the process specification.
Technical Specifications
|
Parameter |
Reference Specification |
|
Maximum Working Width |
1,300 mm |
|
Maximum Unwind Diameter |
1,000 mm |
|
Maximum Rewind Diameter |
600 mm |
|
Maximum Mechanical Speed |
400 m/min |
|
Minimum Slit Width |
80 mm |
|
Unwind Core |
3 / 6 in |
|
Rewind Core |
3 in |
|
Slitting Methods |
Razor / Shear |
|
Web Thickness |
10–200 μm |
|
Slitting Accuracy |
±0.10 mm |
Tension and Web Control
Unwinding
Unwind tension is regulated as the parent-roll diameter decreases, maintaining controlled web entry into the slitting section.
Web Guiding
Edge or center guiding corrects lateral web movement before slitting and helps maintain the specified slit position.
Rewinding
Rewind torque and tension are adjusted according to material properties, roll diameter and required finished-roll hardness.
Finished-Roll Quality
Edge Alignment
Accurate knife positioning and controlled web tracking maintain the specified slit locations across the production width.
Roll Formation
Winding parameters are matched to material behavior to establish a stable finished-roll structure.
Repeatability
Production settings for speed, tension and winding can be recorded and reused for the same material and slit layout.
Configuration Options
Knife System
Razor or shear systems can be selected according to material type, thickness and required edge condition.
Shaft Arrangement
Rewind shaft dimensions are matched to core size, finished-roll diameter, roll width and winding load.
Automation Level
Web guiding, tension control, positioning and roll-handling functions can be configured according to the required production sequence.
Procurement Checklist
Before confirming the machine configuration, prepare:
• Parent-roll width and maximum diameter
• Material type and thickness range
• Maximum parent-roll weight
• Finished-roll widths
• Minimum slit width
• Finished-roll diameter
• Core diameter and core length
• Required production speed
• Slitting method
• Target roll hardness
These values define the required working width, unwind capacity, knife arrangement, tension range and rewind configuration.
FAQ
Q: What materials can this machine process?
A: Typical materials include plastic films, paper, aluminum foil and laminated webs. Configuration is determined by material thickness, web behavior and finished-roll requirements.
Q: What is the role of center-drive rewinding?
A: The center-drive system controls winding torque through the rewind shaft and adjusts the winding condition as finished-roll diameter increases.
Q: Can the minimum slit width be customized?
A: Yes. The achievable slit width depends on material properties, knife arrangement, core dimensions and finished-roll requirements.
Q: What information is needed for machine selection?
A: Parent-roll width and diameter, material type, thickness, finished-roll widths, core size, roll diameter and target speed provide the main configuration data.
Q: Can different slitting methods be used?
A: Yes. Razor and shear slitting can be selected according to material structure, thickness and required slit-edge condition.
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