Cardboard tubes are cylinder-shaped components that are made from wood pulp that has been fabricated into an assortment of cardboard, including paper-adhesive composites, kraft paper, paperboard, and fiberboard. There is a wide range of functions that utilize cardboard tubes to some extent. Cardboard tubes are often made by wrapping a ribbon of cardboard around a mandrel in a designated set of dimensions.
Cardboard tubes can be manufactured to fit numerous items. Depending on the desired level of protection, the structure of cardboard tubes can be made with varying levels of thickness and strength. Cardboard tubes can be found as shipping tubes or mailing tubes, and can be used for things that can be rolled up into a cylindrical shape, such as a document, poster, paper, or piece of artwork. Postal tubes can be made from high quality kraft paper are capable of enduring stress and pressure that comes with the transit and transportation processes. Kraft tubes are very resilient, and are a recommended type of tube for shipping and packaging applications.
Cardboard tubes have numerous other uses, including paper cores that provide structural fortitude for items such as toilet paper, paper towels, rolls of fabric, electrical wires, coin banks, caulking tubes for construction purposes, grease cartridges used extensively for mechanical and automotive applications, and finally, paper cans that are used for packaging merchandise such as costmetics and foods. Contractors and construction businesses use heavy-duty cardboard tubes called Sonotubes in forming concrete pillars. Read More…
The majority of cardboard tubes are spiral-wound, and they can be strengthened with additional adhesive materials. The first step involves cutting large sheets of paper or cardboard into thin ribbons which are given an adhesive coating and then wrapped at an angle around a mandrel configured into the designated shape. Multiple layers can be added in this step, depending on the tube’s desired level of fortitude. All paper tubes are measured and labeled according to their interior dimensions.
In order to ensure structural integrity, paper tubes are generally no longer than 48 inches (approx. 122 cm) in length, despite the variety of the types of tubes available. Waterproof and water resistant cardboard is necessary for certain heavy-duty applications. Therefore, additional adhesives and interior waterproof sealing layers can be added in the fabricating process.
The mixture of resin and wood pulp is formed, cured, and may undergo additional curing within an oven. During the heat treatment process, the pulp melds with the adhesives in order to strengthen the final product, which is more durable and resilient to humidity and other forms of weather. These attributes are important in transportation and storage, in which products are at an additional risk of damage from moisture.
Thicker cardboard is highly recommended for storage, mailing, and transporting fragile items. Mailing tubes are thus designed to shield products from denting, bumping, or breaking while in transit. It is also crucial to choose the correct size in order to minimize how much the products move around while inside the tube. Both of the shipping tube’s ends are sealed with a plastic plug for postal and transportation purposes, especially for scientific or medical products, or confidential documents.
Both ends may be sealed, or they may fold in and close. The interior dimensions are measured in order to formally classify the tube. The thickness of the tube’s wall and the closing spaces at either end are analyzed as well. Tubes used for mailing and shipping are stronger than other types of containers, including boxes. The cylindrical shape of the tube enables it to contain items which are preferably not folded, such as artwork, maps, posters, and blueprints.
Cardboard tubes can vary greatly in terms of size, industry, and function. Tubes can also be coated with customizable decorative foil or paper. Logos and other product information can be printed on the outside of the tube, which can be found on food processing items. Different colors, designs, and patterns can be printed for the purposes of gift packaging or holiday-themed postal tubes.
Paper tubes are commonly fabricated from recycled paper, and tubes made with durable material can be reused. This makes them a cost-effective alternative to other materials such as metal, glass, plastic, or wood. Furthermore, cardboard is easier to cut, purchase, and dispose of, compared to most other materials. In terms of strength-to-weight ratio, cardboard is often times favored over plastic and metal because of its light weight and durability. Heavy-duty cardboard tubes are much less prone to denting and breakage, making this type of cardboard ideal for high-impact mailing and shipping applications.
One important thing to keep in mind is that cardboard is porous. Therefore, for applications such as food processing or electrical wiring, a layer of non-porous material may have to be added in order to protect the tube’s contents from additional and potentially hazardous moisture. Aside from this minor disadvantage, cardboard tubes are flexible, strong, and can be easily reused and recycled. Therefore, numerous industries and applications can rely on cardboard tubes for their day-to-day functions.