NRC Auto Spiral Paper Tube Core Making Machine

Paper Core Tube Making Machine:

This machine produces cylindrical structures by winding multiple layers of paper onto a mandrel with adhesive. The final product's name depends on its application:

• Paper Core: When used as a central structure for winding materials (e.g., plastic film, textiles).

• Paper Tube: When used for protection, packaging, or as a product itself (e.g., mailing tubes, concrete forms).

How It Works: The Spiral Winding Process

The machine performs a continuous, automated process:

1. Unwinding: Multiple rolls of paper (kraft, recycled, etc.) are fed into the machine.

2. Gluing: Each paper strip passes through a precision system that applies a uniform layer of adhesive.

3. Winding: The glued paper is spirally wound around a rotating steel mandrel, which sets the tube's inner diameter. The layers bond to form a strong, continuous tube.

4. Cutting: A high-speed "flying" saw cuts the tube to precise lengths without stopping production.

5. Ejection & Drying: Cut tubes are ejected onto a conveyor, often passing through a drying tunnel to cure the adhesive quickly.

   Key Machine Components

   • Unwind Stands: Holds the large paper rolls.

   • Gluing System: Applies adhesive consistently.

   • Mandrel: The central shaft that defines the tube's inner diameter.

   • Winding Head: Wraps and presses the paper onto the mandrel.

   • Flying Cut-off Saw: Cuts tubes to length at high speed.

   • PLC Control Panel: The computerized brain for controlling speed, length, and glue.

   • Drying System: (Optional) Speeds up the curing process.

   Final Products and Their Applications

   Industrial Cores (Winding Applications):

   • Packaging: Cores for stretch wrap, plastic bags, foil, and flexible packaging.

   • Textiles: Cores for yarns and fabrics (yardage tubes).

   • Paper & Printing: Cores for newsprint and other large paper rolls.

   • Converting: Cores for adhesive tapes, labels, and non-wovens.

   Paper Tubes (Packaging & Structural Applications):

   • Shipping & Mailing: Tubes for posters, documents, and artwork.

   • Construction: Concrete column forms (sonotubes).

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

   • Product Packaging: Tubes for chips, coffee, wine, and cosmetics.