Automatic Spiral Paper Tube Roll Making Converting Equipment

How It Works?

The "spiral" in the name refers to the method of production. The machine winds multiple strips of paper (or other web materials) around a stationary mandrel at a precise angle, creating a continuous, strong, and seamless tube.

Here is a breakdown of the process:

1. Unwinding: Multiple rolls of paper (called "slitter reels") are mounted on an unwinding stand. The paper can be kraft, laminated, specialty, or even non-woven material.

2. Gluing: Each paper strip passes through a precision gluing system, which applies a thin bead of adhesive (like PVA or hot melt) along one edge.

3. Spiral Winding (The Key Step): The glued paper strips are fed onto a rotating steel mandrel. Because the paper is fed at an angle, it winds around the mandrel in a spiral pattern. The glued edge of one strip bonds to the adjacent strip, creating a strong lock-seam. Multiple layers are built up for thickness and strength.

4. Cutting: As the continuous tube emerges from the winding head, a synchronized cutting system (a rotary cutter or flying saw) cuts it into pre-set lengths.

5. Drying & Ejection: The cut tubes are conveyed through a drying section to cure the adhesive. They are then ejected, ready for packaging or further processing (like printing, grooving, or capping).

Key Components of the Machine

• Unwind Stand: Holds the parent paper reels, often with tension control.

• Paper Guidance System: Rollers and guides that direct the paper at the precise angle.

• Gluing Unit: A critical component for applying consistent adhesive.

• Winding Head & Mandrel: The heart of the machine. The mandrel's diameter determines the tube's inner diameter (ID).

• Cutting Mechanism: Cuts the tube to length at high speed.

• Control System (PLC & HMI): The brain of the machine, allowing operators to set length, speed, and glue amount.

• Drying Conveyor: Transports and holds tubes while the adhesive sets.

What Are These Tubes Used For? (Applications)

Spiral wound tubes are incredibly versatile and are used in:

• Industrial Cores: For winding textiles, plastic films, foil, laminates, and paper.

• Packaging Tubes: For shipping posters, documents, maps, and fragile items.

• Consumer Products: The cores inside paper towels, toilet paper, and wrapping paper.

• Construction: Heavy-duty, wax-impregnated tubes used as concrete column forms.

• Specialty Tubes: For fireworks, electrical insulation, and storage.