The inner wall treatment of industrial paper tube is a key link to ensure its performance. The application scenarios of different industries have different but equally stringent requirements for the inner wall state, which are directly related to the functionality and durability of paper tubes.
For industrial paper tubes used to wrap thin materials such as film and paper, the smoothness of the inner wall is the primary consideration. If there are burrs or protrusions on the inner wall, the surface of the material may be scratched during the winding and unwinding process, resulting in defects or even scrapping of the product. Therefore, the inner wall of this type of paper tube needs to be finely polished to ensure a delicate and smooth touch and avoid any rough spots that may damage the winding. At the same time, the smooth treatment of the inner wall can also reduce the friction resistance between the material and the paper tube, making the winding and unwinding process smoother and reducing the risk of material stretching and deformation, especially for tension-sensitive film materials. This treatment is particularly important.
In scenarios involving liquid or paste delivery, the sealing and corrosion resistance of the inner wall of industrial paper tubes become core requirements. In order to prevent leakage of the medium, the inner wall usually needs to be specially coated. The selected coating material must have good compatibility with the conveying medium, and will not cause chemical reactions due to contact, resulting in coating shedding or medium contamination. For example, the inner wall coating of paper tubes used to convey food sauces must meet food contact safety standards, and must not only have the ability to block liquid penetration, but also ensure that no harmful substances are released during use. In addition, the uniformity of the coating is also crucial. Any missing coating may become a hidden danger of leakage, so the thickness and coverage of the coating need to be strictly controlled during the treatment process.
For industrial paper tubes that need to withstand a certain pressure, the structural strength treatment of the inner wall cannot be ignored. This type of paper tube is mostly used for packaging or supporting heavy objects. If there are local weak points on the inner wall, it may collapse or deform under pressure, affecting the overall load-bearing capacity. Therefore, the inner wall treatment will focus on enhancing its structural stability, and may form a uniform force structure through a special bonding method of multiple layers of paper to ensure that the force can be evenly dispersed when under pressure to avoid excessive local stress. At the same time, the bonding strength between the inner wall and the outer wall must also be guaranteed to prevent delamination during the stress process, which will cause the paper tube to fail.
The inner wall of industrial paper tubes used in some special environments must also have moisture-proof and moth-proof properties. In a humid environment, paper tubes are prone to absorb moisture, causing expansion and deformation, affecting their dimensional stability. Therefore, the inner wall may be treated with moisture-proof treatment, and the moisture intrusion path may be blocked by applying moisture-proof agents or using moisture-proof paper materials. For paper tubes that store items that are susceptible to insect infestation, such as clothing and textiles, the inner wall needs to be treated with moth-proof treatment. Using safe moth-proof agents, it can effectively resist the erosion of insects and protect the integrity of internal items without affecting the stored items.
For industrial paper tubes used for electronic component packaging, the inner wall treatment must also consider anti-static requirements. Electronic components are extremely sensitive to static electricity. If the inner wall of the paper tube carries static electricity, it may absorb dust in the air, pollute the components, and even cause static discharge to damage the components. Therefore, the inner wall of this type of paper tube will be treated with anti-static treatment. By adding special anti-static agents, the inner wall will have a certain conductive property, which will release static electricity in time and avoid the accumulation of static electricity from causing harm to electronic components.
The special requirements for the inner wall treatment of industrial paper tubes are essentially to enable paper tubes to adapt to different usage scenarios and meet various functional requirements. Each treatment method requires precise control to ensure that the treatment effect is stable and reliable. Both physical and chemical properties must be highly matched with the requirements of the application scenario. Only in this way can the role of industrial paper tubes in various industries be fully utilized to ensure the smooth progress of related production and use links.
