Automatic Paperboard Tubes Manufacturing Plant Cost

What is a Spiral Paper Tube Making Machine?

A spiral paper tube making machine is an industrial machine designed to produce long, cylindrical tubes and cores by winding multiple layers of paper (or other web materials) in a spiral fashion around a mandrel. This is the primary method for creating the cardboard tubes found in products like paper towel rolls, shipping containers for posters, and the industrial cores for fabrics, films, and foils.

How Does It Work? (The Spiral Winding Principle)

The process is continuous and can be broken down into several key stages:

1. Unwinding: Multiple rolls of paper (called "slitter reels") are mounted on an unwinding stand. The paper can be kraft paper, laminated paper, specialty papers, or even non-wovens, depending on the required strength and application.

2. Gluing: As the paper webs are fed into the machine, they pass through a precision gluing system. A glue applicator applies a continuous, thin layer of adhesive (typically PVA or hot melt) along the edge of each paper strip.

3. Spiral Winding (The Core Process): The glued paper strips are fed onto a rotating steel mandrel. Because the paper is fed at an angle to the rotating mandrel, it winds around it in a spiral pattern. The overlapping, glued edges of each paper strip bond the layers together, creating a incredibly strong, seamless tube.

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

5. Drying & Ejection: The freshly cut tubes are then conveyed through a drying section to allow the adhesive to fully cure. Finally, they are ejected from the machine, ready for packaging or further processing (e.g., printing, grooving, capping).

Key Components of the Machine

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

• Paper Guidance System: A series of rollers and guides that direct the paper strips to the winding head at the precise angle.

• Gluing Unit: A critical component that applies a consistent bead of glue. Can be a wheel applicator, nozzle system, or extrusion system.

• Winding Head / Mandrel: The heart of the machine. The mandrel is a solid, polished steel bar around which the tube is formed. Its diameter determines the inner diameter (ID) of the tube.

• Cutting Mechanism: Cuts the tube to length. Can be a rotary cutter for high speeds or a reciprocating saw for heavier walls.

• Control System: A PLC (Programmable Logic Controller) and HMI (Human-Machine Interface) that allows the operator to set parameters like tube length, production speed, and glue amount.

• Drying Conveyor: A conveyor system that holds the tubes while the adhesive sets, preventing deformation.

Types of Tubes Produced

These machines are highly versatile and can produce a wide range of tubes and cores:

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

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

• Consumer Product Tubes: The cores for paper towels, toilet paper, and wrapping paper.

• Concrete Column Molds: Heavy-duty, wax-impregnated tubes used in construction for forming round concrete pillars.

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