Light fastness refers to the performance of UV flexo printing ink that its color does not fade under the action of sunlight. To master the lightfastness of various UV flexo inks, you must first understand the lightfastness level of each UV flexo ink, which is divided according to the BWS international standard. The BWS consists of 8 levels, from the lowest level 1 to the highest level 8. All UV flexo inks must be tested for lightfastness in a specific laboratory. To ensure that the printed matter can maintain bright colors for a long time.

UV flexographic ink is an environmentally friendly ink that uses ultraviolet light curing technology. It does not produce volatile organic compounds (VOC) during the printing process and is environmentally friendly. It also has the advantages of fast curing, high printing quality, bright colors, and strong adhesion.

UV flexo printing is a type of flexographic printing that uses ultraviolet (UV) light to cure the ink.

Flexographic printing is a type of letterpress printing that uses a flexographic printing plate and transfers ink through an anilox roller.

Flexographic UV inks are mainly composed of prepolymers, reactive diluents, photoinitiators and sensitizers, pigments, and additives. According to the requirements of different printing materials, these components are reasonably coordinated to make the flexo UV ink achieve the best performance.