NRC1600 Paper Roll Slitting Rewinding Machine

NRC1600 Paper Roll Slitting Rewinding Machine: Overview & Specifications

This machine is designed for converting large master rolls of paper (like kraft, tissue, label, or other types) into narrower, finished rolls. The "NRC" designation often stands for something like "New Rewinding Center" or is simply a model series code from the manufacturer.

Interpreted Key Specifications (Based on the Model Number):

• Maximum Unwinding/Winding Width: 1600 mm (63 inches). This is the primary feature indicated by the model number.

• Typical Max Roll Diameter: Machines in this class often handle unwind diameters up to 1000-1600 mm (40" - 60") and rewind diameters up to 600-1000 mm (24" - 40").

• Slitting Method: Likely configurable as either Razor Cut or Shear Cut.

• Rewinding System: Most commonly a Center-Surface Rewinding system for excellent tension control and hard rolls.

• Shaftless Unwind: Modern machines like this almost certainly feature a pneumatic shaftless unwind stand for easy loading of heavy master rolls.

• Control System: A PLC + HMI (Touch Screen) for easy operation, parameter setting, and fault diagnosis.

Typical Features and Components

A machine like the NRC1600 would be equipped with the following features for efficiency and quality:

1. Shaftless Unwind Stand with Brake: Allows one person to load a large master roll without physical shafts, using pneumatic arms. The brake provides back-tension.

2. Automatic Web Guide System: Crucial for a 1600mm wide web. It ensures the paper edge is perfectly aligned before slitting, preventing waste and misaligned rolls.

3. Slitting Unit:

   • Shear Cut System: Uses upper and lower circular blades for a clean, dust-free cut. Ideal for high-speed operation and sensitive materials.

   • Razor Cut System: A cost-effective option where a razor blade cuts against a rubber-covered roller.

4. Spreader Bars: Used after slitting to separate the strips and ensure they wind tightly and evenly onto the cores.

5. Center-Surface Rewind Shaft: The preferred method. It uses a central shaft to drive the cores while supported by a drum, allowing for very high tension and extremely hard, dense finished rolls.

6. AC Motor Drives & Tension Control: Provides precise control over the machine speed and web tension, which is the key to producing high-quality rolls.

7. Pneumatic Core Loading & Ejection: Makes it easier and faster to load empty cores and unload the finished, heavy rolls.

8. Safety Guards: Full-length, interlocked safety guards are essential to protect operators.

Who Uses This Machine? (Target Industries)

A 1600mm wide machine is a mid-to-large size converter suitable for:

• Paper Converting Mills: Producing rolls for flexographic printing, packaging, and industrial use.

• Label Stock Manufacturers: Slitting pressure-sensitive label materials.

• Packaging Material Producers: Creating rolls for bag-making machines (e.g., kraft paper shopping bags, cement bags).

• Non-Woven Fabric Converters: For materials used in hygiene, medical, and industrial products.

Key Advantages of a Machine like the NRC1600

• High Efficiency: Capable of high operating speeds (e.g., 300-500 m/min), significantly increasing output.

• Excellent Roll Quality: The center-surface rewinding system produces hard, tidy rolls without telescoping, which is critical for downstream automated processes.

• Precision Slitting: Clean, accurate edges minimize dust and waste.

• User-Friendly: The PLC control system allows for storing recipes for different jobs, making changeovers quick and simple.

• Durability: Built with robust components to handle continuous industrial use.