Tape Jumbo Roll Slitting Rewinding Manufacturer Cost

This machine is the workhorse of the tape converting industry, designed to transform large, economical jumbo rolls (or "mother rolls") of any tape type into saleable, user-friendly smaller rolls.

Core Purpose and Function

The fundamental purpose is Width Conversion and Packaging Preparation. It takes a wide roll of material and:

1. Slits it lengthwise into multiple narrower strips.

2. Rewinds these strips onto individual cores to a specific length or diameter.

3. Produces finished rolls that are ready for labeling and shipping.

Key Components (In-Depth)

1. Unwinding System:

   • Function: To hold and controllably release the jumbo roll.

   • Types:

     • Shafted Unwind: A mechanical shaft is inserted through the core of the jumbo roll.

     • Shaftless Unwind: Uses hydraulic or pneumatic arms to grip the inside of the core. Faster and easier for heavy rolls.

   • Critical Feature: Tension Control. Uses brakes (pneumatic, magnetic powder) or a back-drive motor to maintain consistent tension, preventing snapping or loose rolls.

2. Web Guiding System:

   • Function: Automatically corrects the lateral (side-to-side) position of the material as it enters the slitting unit.

   • Why it's important: Ensures straight, parallel slitting. Without it, the material can drift, causing uneven slit widths and damaged edges.

3. Slitting Mechanism:

   • This is the core of the machine. The method chosen depends on the tape's material and adhesive.

1. Rewinding System:

   • Function: To wind the slit tapes onto new cores.

   • Types:

     • Center Surface Rewind: The cores are driven by contact with a large drum. Excellent for maintaining consistent tension across all strips. Most common for tapes.

     • Center Rewind: The cores are driven directly from the shaft. Requires very precise tension control.

   • Key Feature:

     • Duplex Rewind: Two rewind shafts. While one is winding, the operator unloads finished rolls from the other, allowing for non-stop production. Essential for high-output facilities.

2. Tension Control System:

   • The most critical factor for roll quality. It uses a combination of:

     • Dancer Rollers: A weighted or air-loaded roller that moves up and down to absorb tension variations.

     • Tension Sensors: Load cells that provide real-time feedback to the PLC.

     • PLC & Drives: The brain that adjusts brakes and motor speeds to maintain a set tension.

3. Drive & Control System:

   • AC/DC Motors or Servo Motors: Provide the power for smooth operation.

   • PLC (Programmable Logic Controller): The automated brain.

   • HMI (Human-Machine Interface): The touchscreen where the operator sets parameters like length, speed, tension, and slit widths.

4. Ejection System:

   • Automatically pushes the finished rolls off the shaft once the set length is reached, streamlining the workflow.

Standard Workflow

1. Loading: The jumbo roll is placed on the unwind stand.

2. Threading: The material is guided through the machine, over the dancer, through the slitter, and taped to the cores on the rewind shaft.

3. Programming: The operator inputs the desired roll length, diameter, quantity, and speed on the HMI.

4. Slitting & Rewinding: The machine starts. The jumbo roll is unwound, guided, slit into multiple strips, and rewound onto individual cores.

5. Counting & Termination: The machine counts the length (or measures diameter) and stops at the preset value.

6. Cutting & Tabbing: A cutting mechanism (often a hot knife for adhesive tapes) severs the tape and tucks the end onto the roll.

7. Ejection & Unloading: The finished rolls are ejected and removed for packaging.

Types of Tapes Processed

This machine is versatile and can be configured to handle:

• BOPP Packing Tape

• PVC Electrical Tape

• Masking Tape

• Double-Sided Tape

• Duct Tape

• Filament Tape

• Paper Tape