Product Overview
Dual-Turret Web Slitting Equipment converts wide parent rolls into multiple finished rolls through controlled unwinding, web guiding, longitudinal slitting and turret rewinding. Two turret winding positions support continuous roll cycles, with the next winding position prepared while the current rolls are completed.
The machine configuration is based on material type, thickness, parent-roll dimensions, finished-roll format, core size, slit layout, roll weight, winding tension and required production speed.
Dual-Turret Rewinding
Two winding positions allow the machine to alternate between active and prepared rewind shafts. This supports a continuous production sequence when finished rolls reach the specified diameter.
The turret movement coordinates roll completion, web transfer and the next winding position. Changeover settings are matched to the material and finished-roll format.
Rewind tension, contact pressure and shaft configuration influence roll density, edge alignment and finished-roll geometry. These settings are established according to material structure and roll dimensions.
Slitting Configuration
Shear Slitting
Shear knives provide controlled cutting for paper, film, laminate and other compatible web materials. Knife geometry and pressure are selected according to substrate thickness and structure.
Razor Slitting
Razor slitting is suitable for compatible thin and flexible webs where the required edge condition can be achieved with this cutting method.
Slit Layout
Knife positions are arranged according to finished-roll widths, trim allowance and core spacing. The total slit arrangement is matched to the available working width.
Web Tension Control
Unwind Control
Unwind tension changes as the parent-roll diameter decreases. Controlled tension maintains stable web movement through the guiding and slitting sections.
Rewind Control
Rewind tension is adjusted according to material thickness, roll diameter and winding structure. The setting affects roll hardness and winding consistency.
Web Guiding
Web guiding controls lateral web position before and after slitting. Accurate guiding helps maintain finished-roll alignment across multiple lanes.
Key Advantages
Shorter Changeover
The dual-turret arrangement prepares the next winding position during the current winding cycle, reducing the time required between finished-roll sets.
Continuous Production
The winding sequence can continue with limited interruption when the finished-roll format and material are suitable for automatic changeover.
Consistent Roll Geometry
Controlled tension, guiding and winding conditions help maintain repeatable roll diameter, edge position and winding density.
Flexible Roll Formats
Core diameter, slit width, finished-roll diameter and winding arrangement can be configured around the required production format.
Material Applications
Plastic Film
Suitable configurations can process compatible PE, PP, PET and other flexible film structures according to thickness and winding requirements.
Paper and Labelstock
The web path and cutting arrangement can be matched to paper grades, coated materials and labelstock structures.
Aluminum Foil
Thin foil requires controlled web tension and stable guiding to maintain material position during longitudinal slitting.
Laminated Webs
Slitting and winding conditions are selected according to laminate thickness, layer structure and required finished-roll format.
Typical Technical Parameters
|
Parameter |
Reference Configuration |
|
Turret Structure |
Dual-turret |
|
Winding Positions |
4 shafts |
|
Working Width |
1,300–1,800 mm |
|
Maximum Line Speed |
800 m/min |
|
Parent Roll Diameter |
Up to 1,200 mm |
|
Finished Roll Diameter |
Up to 600 mm |
|
Material Thickness |
12–200 μm |
|
Unwind Core Diameter |
76 / 152 mm |
|
Rewind Core Diameter |
76 / 152 mm |
|
Minimum Slit Width |
30 mm |
|
Slitting Methods |
Razor / shear |
|
Control System |
PLC + HMI |
|
Drive System |
Servo |
Production Configuration
Material Data
Material type, thickness, coating, laminate structure and web strength determine the required slitting method, tension range and web-handling conditions.
Roll Data
Parent-roll width, diameter and weight are matched with finished-roll width, diameter, core size and lane arrangement to establish the unwind and rewind configuration.
Process Data
Target speed, slit quantity, winding tension, changeover method and production volume determine the required machine configuration and automation functions.
Quality Control
Mechanical Inspection
Critical assemblies are checked for dimensional accuracy, alignment and operating condition during machine assembly.
Running Test
The web path is checked through unwinding, guiding, slitting, turret movement and rewinding sequences before shipment.
Finished-Roll Check
Finished rolls are checked for diameter, edge alignment, winding condition and slit consistency against the specified production format.
Application Fit
This equipment is suited to converting lines that process wide parent rolls into multiple finished rolls and require repeatable winding conditions with frequent roll changes. The dual-turret configuration is particularly relevant to continuous production where finished-roll removal and the following winding cycle need to be coordinated.
Configuration for Your Material
Machine selection starts with the actual production specification. Material type, thickness, parent-roll width and diameter, finished-roll width and diameter, core size, roll weight, target speed and slit layout determine the suitable unwind capacity, slitting arrangement, tension control and turret configuration.
FAQ
Q: What materials can the machine process?
A: The machine can be configured for compatible plastic films, paper, labelstock, aluminum foil and laminated webs. Material thickness and mechanical properties determine the suitable slitting and winding setup.
Q: What is the function of the dual-turret structure?
A: The dual-turret structure provides two winding positions, allowing the next roll set to be prepared while the current winding cycle is completed.
Q: How is the slit width determined?
A: Knife positions are arranged according to finished-roll width, trim allowance, core spacing and total working width.
Q: What information is needed for machine selection?
A: The main data includes material type, thickness, parent-roll dimensions, finished-roll dimensions, core diameter, roll weight, target speed and slit layout.
Q: Can different finished-roll formats be processed?
A: Yes. The winding arrangement can be configured for different core diameters, finished-roll widths, roll diameters and slit combinations within the specified machine range.
Q: How is the final machine configuration confirmed?
A: The final configuration is established from the actual material and roll specifications. These parameters define the web path, tension range, slitting arrangement and winding configuration.
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