Manufacturing paper Cylinder Tubes consists of some critical stages, which are very important in determining the quality and strength of the final product.
How Do Paper Tubes Come About?
Step 1. Raw Materials Preparation:
First in the manufacturing process comes the preparation of raw materials. Manufactured rolls of kraft papers are prepared, inspected in terms of quality, and made ready for the processing treatment. Normally, papers go through pre-processing to ensure they possess the specific minimum strength and durability.
Step 2 – Cutting the Paper:
Kraft paper rolls are passed through a slitting machine that cuts the sheets into strips of narrower width, and these become the layers of the tube. The width varies with the thickness and diameter desired in the finished tube.
Step 3: Glue Applying:
The adhesive treatment of kraft paper strips is very important in both the type and quantity used, as this determines the strength of bonding between the layers.
Step 4. Folding the Paper:
Such coated webs are spirally wound onto a cylindrical rod whereby the paper is shaped as a tube. Such spiral winding commonly called convolute winding is effected by a rotating mandrel and feeding the strips of paper at an angle onto it. The angle of feed and tension of paper is controlled in such a way so as to ensure the spirals are consistent and strong.
Step 5. Cut to Size:
When the desired thickness is attained, the continuous tube is then cut to the desired length by either a saw or a rotary cutter, whichever works best considering the thickness and diameter of the tube.
Step 6. Curing and drying: All these tubes are then cured and dried. The process allows the adhesives to set properly and the layers to bond properly together, giving strength to the tube. Step 7: Finishing Touches: The tubes finally undergo any finishing operations, which include trimming, sanding, and sometimes coating or lining. These finishes give the tube a smooth edge, even dimensions, and any other properties the tube will need for its intended use.