Kraft Paper Jumbo Rolls Slitting Rewinding Making Machinery

It is an industrial system designed to automatically unwind a large "jumbo" or "master" roll of paper, slit it into multiple narrower widths, and then rewind these strips onto new, smaller cores to create finished, market-ready rolls.

The three key functions in its name describe the entire process:

1. Jumbo Roll Unwinding

2. Slitting

3. Rewinding

   The Workflow Process

   1. Loading: The jumbo roll is loaded onto the unwind stand, and the paper web is threaded through the machine (over guide rolls, through the slitter, and attached to the cores on the rewind shaft).

   2. Setup: The operator inputs the desired finished roll parameters (width, diameter, tension) into the HMI. The slitting knives are positioned accordingly on their shafts.

   3. Start-Up: The machine is started. The unwind brake applies tension, the web guide centers the paper, and the rewind shaft begins rotating.

   4. Running: The paper web is slit into multiple strips. Each strip is guided onto its own core on the rewind shaft. The machine runs at high speed (often 1000+ meters per minute).

   5. Rewinding & Roll Building: The machine winds the paper, constantly managing tension to ensure the finished rolls are hard and uniform, not loose or distorted.

   6. Stopping & Unloading: When the finished rolls reach the pre-set diameter or the jumbo roll is depleted, the machine stops automatically. The rewind shaft is stopped, the rolls are cut, and the shaft with the finished rolls is unloaded for packaging and shipping.

   Applications

   These machines are essential for creating the final products we use every day:

   • Printing & Packaging: Slitting rolls for flexographic and digital printing, creating rolls for packaging machines (e.g., cardboard cores for tapes, labels).

   • Tissue & Hygiene: Converting jumbo rolls of toilet tissue, kitchen towels, and napkins into consumer-sized rolls.

   • Labels & Adhesives: Producing narrow rolls of pressure-sensitive labels, adhesive tapes, and films.

   • Specialty Papers: Converting carbonless paper, photographic paper, and release liners.