Small Spiral Paper Tube Core Making Machine

What is a Spiral Paper Tube Making Machine?

It is an industrial machine that produces long, cylindrical tubes and cores by continuously winding multiple layers of paper (or other materials) in a spiral (helical) pattern around a central rod called a mandrel. This method creates an exceptionally strong and seamless tube.

How It Works: The Step-by-Step Process

The entire process is continuous and automated. The core principle is that paper is fed at an angle to a rotating mandrel.

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

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

3. Spiral Winding (The Key Step):

   • The glued paper strips are fed onto a rotating steel mandrel. The diameter of this mandrel defines the inner diameter of the tube.

   • Because the paper is fed at a precise angle (e.g., 45-85 degrees), it wraps around the mandrel in a spiral.

   • The glued edge of one strip bonds securely to the adjacent strip, creating a strong "lock-seam." Multiple layers are built up to achieve the desired wall thickness and strength.

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

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

Key Components of a Paper Tube Making Machine

Regardless of type, most machines share these core components:

1. Unwind Stand: Holds the large rolls of paper (parent reels), often with automatic tension control.

2. Paper Guidance System: A series of rollers that direct the paper to the winding head.

3. Gluing System: Applies a precise amount of adhesive (PVA, hot melt, etc.) to the paper. This is critical for tube integrity.

4. Winding Head & Mandrel: The core of the machine where the tube is formed. The mandrel defines the inner diameter (ID) of the tube.

5. Cutting Unit: Cuts the continuous tube to the required length. Can be a rotary cutter, flying saw, or guillotine.

6. Control System (PLC & HMI): The computerized brain for setting length, speed, glue amount, and monitoring production.

7. Drying & Ejection System: A conveyor that allows the adhesive to cure before the tubes are collected.

Applications of Paper Tubes and Cores

The products from these machines are essential in numerous industries:

• Packaging: Tubes for shipping posters, documents, textiles, and food products (e.g., chip tubes).

• Industrial Cores: The central core for winding paper, plastic film, foil, labels, textiles, and carpet.

• Construction: Sonotube®-style concrete column forms.

• Consumer Goods: Cores for paper towels, toilet paper, and wrapping paper.

• Specialty Products: Tubes for fireworks, electrical insulation, and medical applications.