Moisture resistance is key to ensuring the quality of the film. The blueo tempered film packaging box's design incorporates a multi-layered protection system through material selection, structural optimization, and process innovation. Traditional paper packaging, due to its high moisture absorption, is prone to deformation, edge warping, and even mold. However, targeted improvements have significantly enhanced the blueo tempered film packaging box's moisture resistance.
In terms of material selection, the blueo tempered film packaging box prioritizes high-weight base paper. This type of paper has a high fiber density and minimal strength loss after moisture absorption, thus reducing structural deformation caused by humidity fluctuations. Some products also apply a hydrophobic coating to the base paper, creating a dense, waterproof layer on the surface to slow moisture penetration. For example, impregnation with wax or resin-based moisture-proofing agents can significantly reduce the moisture permeability of the paper, providing basic protection for the film. Composite materials are also commonly used, such as combining plastic film and aluminum foil with a paper substrate to create a packaging structure that is both moisture-resistant and environmentally friendly.
In terms of structural design, the blueo tempered film packaging box utilizes multiple layers of protection and sealing to enhance moisture resistance. The inner layer typically utilizes a moisture-proof liner, such as asphalt paper, kraft paper, or plastic film, directly wrapped around the film to isolate moisture. The outer layer utilizes a tightly folded structure or snap-on design to minimize gaps and prevent external moisture intrusion. Some packaging boxes also utilize heat-pressing technology or sealing strips at the seams to ensure overall sealing. For example, a lid-style packaging box effectively blocks moisture through the tight fit of the upper and lower lids, combined with an internal moisture-proof layer. A drawer-style design, on the other hand, utilizes a sealed sliding track to minimize moisture ingress during opening.
Process innovation is another key factor in enhancing moisture resistance. Blueo tempered film packaging boxes strictly control moisture content during production. The base paper is preheated before production and is promptly dehumidified and dissipated after production to prevent condensation from forming during cardboard stacking. The glue formula has also been optimized, with the addition of a moisture-proofing additive to reduce the amount of glue applied. A low-temperature, quick-drying adhesive is used to shorten drying time and minimize the risk of moisture absorption. Furthermore, the application of a spot printing process reduces ink coverage of paper fibers, preserving more air permeable pores and helping maintain a dry environment inside the box.
Additional moisture-proofing measures further enhance the protective effect. Some blueo tempered film packaging boxes contain desiccants, such as silica gel or montmorillonite, which absorb residual moisture through physical adsorption, extending the shelf life of the film. These desiccants are typically enclosed in breathable pouches and placed on the bottom or side of the box. This prevents access to the film while providing continuous moisture protection. This "active + passive" protection approach provides dual protection for the film.
Moisture-proof management during storage and transportation is also crucial. Blueo tempered film packaging boxes should be stored in a dry and ventilated environment. Warehouse humidity should be kept within a reasonable range, and industrial dehumidifiers or desiccant should be installed regularly. Cardboard should be stacked on raised pads to prevent moisture from accumulating on the floor. Stacking should be done in a "well" pattern or in a staggered, rotating pattern to ensure proper ventilation. During transportation, vans are preferred. If using a convertible, cover with multiple layers of tarpaulin and secure it to prevent rain.
The moisture-proof performance of the blueo tempered film packaging box is achieved through multi-dimensional optimization of materials, structure, process, and management. From the application of high-weight base paper and hydrophobic coating, to the multi-layer sealing structure and desiccant auxiliary protection, to the meticulous control of production and warehousing, every step is centered around "blocking moisture and protecting the film." This systematic moisture-proof design not only enhances the practicality of the packaging box, but also ensures the stable quality of the tempered film during transportation and storage, providing consumers with a reliable user experience.
