Advantages:
UV curable varnish is cured by UV irradiation. Compared with traditional hot air drying and low-temperature drying, it is faster, consumes less energy, and is more environmentally friendly. The specific advantages are elaborated from the following five aspects:
Traditional curing methods such as drying and hot air drying require a significant amount of time, which is undoubtedly a major issue for a production line. To complete product manufacturing efficiently, a large amount of time (calculated in hours) is needed solely for the curing process, excluding other procedures.
In contrast, UV curing operates differently. It directly triggers rapid curing through a chemical reaction (calculated in seconds). This process saves a substantial amount of process time, allowing subsequent cutting and packaging to be carried out immediately. Thus, the advantages of UV curing are evident.
Traditional varnishes require a large number of volatile organic solvents to achieve low-viscosity application. Since curing involves drying, this process emits a large amount of harmful gases that pollute the environment. However.
UV curable varnish fundamentally addresses this problem by minimizing or even eliminating the emission of harmful substances at the source. More notably, the drying process of traditional varnishes consumes extremely high energy, while the energy consumption of UV curable varnish is reduced by one-third, realizing a low-carbon process.
Traditional varnishes form films through resin accumulation after solvent evaporation, whereas UV curing forms a three-dimensional network structure via cross-linking film formation. As a result, the finished film layer is denser, with excellent hardness, scratch resistance, and chemical resistance. It can withstand high-frequency scratches outdoors, resist long-term ultraviolet radiation without cracking, and exhibits a significant improvement in glossiness.
UV curing does not require high-temperature drying and has low sensitivity to temperature. More importantly, it can be adapted to different product materials by adjusting various formulations, directly overcoming the limitation of material selectivity in traditional methods. Additionally, it is compatible with multiple application processes. After curing, the film layer remains stable, and despite the fast curing speed, it can be applied uniformly with consistent film thickness.
By adopting ultraviolet curing, UV curable varnish fundamentally solves the problems of high pollution, low efficiency, and weak performance of traditional varnishes. It demonstrates advantages such as broad adaptability and high stability, which is why it is increasingly adopted by more enterprises in numerous fields and gradually becoming the mainstream direction to replace traditional coating technologies.