What Is a Back-to-Back Slitting Machine?
1. What Is a Back-to-Back Slitting Machine?
A back-to-back slitting machine (also called center surface winding slitter) is an industrial equipment designed to cut large rolls of flexible materials into narrow, uniform rolls. Its unique “back-to-back” rewinding structure uses dual shafts to wind slit materials simultaneously, ensuring tight, neat rolls—even for ultra-narrow widths (as small as 10mm).
The ZM-KB-900 is a high-performance back-to-back slitter built for precision and efficiency. It handles materials like kraft paper, BOPP, PET, PE, and PVC, with a maximum working width of 900mm. Unlike vertical slitters, its horizontal design prioritizes stability for narrow slitting tasks, making it ideal for high-volume production where consistency is critical.
2. Key Components of the ZM-KB-900
The ZM-KB-900’s reliability comes from its premium components. Here’s a detailed breakdown:
|
Component |
Function |
|
Unwinding Mechanism |
Holds large raw material rolls (max diameter 800mm) with magnetic powder brake for stable tension (100N.M). Manual vertical/horizontal adjustment fixes uneven rolls. |
|
Photoelectric Deviation Correction System |
2 photoelectric eyes + 4 linear guides adjust material alignment with ±0.3mm precision, avoiding edge misalignment. |
|
Slitting Unit |
Tungsten carbide disc blades for sharp, long-lasting cuts; gear-matched upper/lower shafts ensure precise width adjustment (10mm min slitting width). |
|
Back-to-Back Rewinding Section |
Dual 3-inch air expansion shafts (Φ76mm) wind slit materials simultaneously; pressure arms balance internal/external pressure for neat rolls (max diameter 600mm). |
|
Control Panel |
PLC (Wenzhou Dingfeng) + Huichuan touchscreen with automatic tension control, length counting, and preset stop functions—simple to operate. |
|
Waste Removal System |
0.75kw high-pressure blower automatically discharges slitting waste, keeping the workspace clean. |
|
Transmission System |
5.5KW motor (Shanghai Suchuan) + inverter (Shenzhen Zhenxuan) for smooth speed adjustment (0-180m/min). |
![What Is a Back-to-Back Slitting Machine? 1]()
3. How Does the ZM-KB-900 Work?
The machine follows a simple 5-step process to deliver precise narrow-width rolls:
- Load Raw Material: Place a large roll on the unwinding section. The air expansion shaft locks it securely, and manual adjustment fixes any roll unevenness.
- Align & Tension: The deviation correction system keeps the material on track. Magnetic powder brake controls unwinding tension to prevent stretching or wrinkling.
- Slit to Width: The tungsten carbide blades cut the material into your desired narrow widths (10mm-900mm). Gear-matched shafts ensure clean, straight cuts.
- Back-to-Back Rewinding: Dual air expansion shafts wind the slit materials simultaneously. Pressure arms balance pressure, creating tight, uniform rolls.
- Remove Waste & Rolls: The blower discharges waste automatically. One-key deflation releases the finished rolls for easy removal.
4. Core Selling Points of the ZM-KB-900
- Ultra-Narrow Slitting: Cuts down to 10mm width—perfect for adhesive tape, narrow packaging strips, or small-label materials.
- High Precision: ±0.3mm deviation correction and ±0.5mm slitting accuracy ensure consistent roll widths, no uneven edges.
- Efficient Rewinding: Back-to-back dual shafts double rewinding efficiency, handling high-volume orders quickly (180m/min max speed).
- Stable Tension Control: PLC-controlled magnetic powder clutch/brake maintains steady tension, reducing material waste and wrinkles.
- Durable Design: Tungsten carbide blades and 30mm steel main plate resist wear, ensuring long-term reliability.
- Easy Operation: Intuitive touchscreen lets you set parameters in minutes—no complex training needed.
5. Ideal Uses & Industries for the ZM-KB-900
This machine excels at narrow-width slitting, making it perfect for:
- Packaging Industry: Slit kraft paper, PE/PVC films for food packaging, gift boxes, or daily chemical product packaging.
- Adhesive Tape Industry: Process BOPP film substrates into narrow rolls for tape production.
- Printing Industry: Trim printed BOPP/PET films or label base materials into precise widths.
- Paper Product Industry: Cut coated paper, composite paper for small bags or box inserts.
- Plastic Processing Industry: Slit polypropylene, PVC sheets into narrow rolls for further production.
6. FAQ
Q1: What materials can the ZM-KB-900 handle?
It works with kraft paper, BOPP, PET, PE, PVC, composite paper, and pearlized films—ideal for materials that require narrow-width slitting.
Q2: How fast can it run?
It reaches a maximum speed of 180m/min, making it suitable for high-volume production.
Q3: Is it hard to adjust for different slitting widths?
No—rotate the handwheel to adjust the blades, and save frequently used widths in the PLC for quick switching.
Q4: What power supply does it need?
It uses 3-phase 380V/50Hz power with a total power of 6.5kw—compatible with standard industrial electrical systems.
7. Conclusion
The ZM-KB-900 back-to-back slitting machine is a game-changer for businesses needing precise, efficient narrow-width slitting. Its ultra-narrow cutting capability, high precision, and back-to-back rewinding make it stand out in packaging, adhesive tape, and printing industries. Whether you’re producing small-label materials or narrow packaging strips, this machine delivers consistent, high-quality results with minimal effort.
8. Explore More & Shop the ZM-KB-900
- Shop the Machine: Invest in the ZM-KB-900 Back-to-Back Slitting Machine for narrow-width production.
- Related Guide: Read [How to Maintain Tungsten Carbide Blades for Slitting Machines] to extend blade life.
- Compare Models: Check out [ZM-KB-900 vs ZM-LS9-1300: Which Slitter Fits Your Needs?] for choose tips.
- Accessories: Stock up on [ZM-KB-900 Replacement Blades] and [Air Expansion Shafts] for uninterrupted production.
- Use Case: Learn how an adhesive tape factory boosted efficiency with the ZM-KB-900 in [Case Study: Narrow Slitting Transforms Production].
