How to prevent kraft paper box from deformation or loss of strength in high humidity environment?
Publish Time: 2025-04-01
In the packaging industry, kraft paper box is popular for its strong and durable, environmentally friendly and recyclable characteristics. However, in a high humidity environment, kraft paper box is easy to absorb moisture, resulting in deformation, loss of strength, and even affecting the quality and safety of the internal products. In order to ensure the stability and durability of kraft paper box in a high humidity environment, the following are some effective preventive measures.
First of all, choosing the right kraft paper material is the basis. High-quality kraft paper has high moisture resistance and strength, and can resist the influence of moisture to a certain extent. When choosing materials, you can consider kraft paper with special waterproof treatment. The surface of these papers is specially treated to effectively prevent moisture penetration. In addition, synthetic paper is also a good choice. It combines the beauty of natural paper and the waterproof performance of plastic, and can maintain good physical properties in a high humidity environment.
Secondly, optimizing the structural design of kraft paper box is also the key to preventing deformation and loss of strength. By increasing the thickness of the paper box and strengthening the flute structure, the compression and bending resistance of the paper box can be improved, and the risk of deformation in a humid environment can be reduced. Reasonable setting of reinforcing ribs and creases can help disperse external pressure and keep the shape of the carton stable. At the same time, ensuring that the carton is well sealed can effectively prevent external moisture from invading.
In the production process, it is also crucial to use appropriate processing technology. Laminating or glazing the kraft paper box can form a protective film on the surface of the carton to prevent moisture penetration. At the same time, use high-quality glue for bonding to ensure that the various parts of the carton are firmly connected to avoid structural loosening caused by moisture. In addition, the temperature and humidity should be strictly controlled during the production process to reduce the hygroscopicity and expansion of the paper.
In the storage and transportation links, a series of measures are also needed to prevent the kraft paper box from deforming or losing strength. First of all, the warehouse should be kept dry and ventilated to avoid long-term exposure of the carton to humid air. Dehumidifiers can be used or desiccant can be placed to reduce the humidity in the warehouse. During transportation, rain and moisture-proof measures should be taken, such as using waterproof packaging materials or covering with tarpaulins, to ensure that the carton is not affected by moisture during transportation.
Finally, for kraft paper boxes that have deformed or lost strength, they should be handled in time. Slight deformation can be restored by adjusting the placement or using supports. For severely deformed cartons, new packaging materials need to be replaced to ensure product safety and quality.
By selecting appropriate materials, optimizing structural design, adopting appropriate processing technology, strengthening control of storage and transportation links, and timely handling of deformed cartons, kraft paper boxes can be effectively prevented from deforming or losing strength in high humidity environments. These measures not only help improve the stability and durability of packaging, but also reduce production costs and reduce resource waste.
