| Summary: | 碩士 === 逢甲大學 === 工業工程與系統管理學研究所 === 97 === The competition in the current world market has forced the manufacturers to produce products with low cost, high quality and matching the environmental protection demand. Friendly production environment, high quality and high efficiency are crucial factors in printing industry. Ultraviolet (UV) printing can match this demand. The UV dosage energy is the most important factor to print high quality product with high production rate. The larger UV dosage energy, the better the printing quality is. The purpose of this research is to improve the dosage energy by randomized complete block design. Two factors are reflector width and the height between lamp and substrate. The blocking factor is the measuring point (left, center and right) of the input material. The results show that the blocking factor is the most significant factor. It is obviously that the center point is much larger than the other two sides. Besides, the height and the interaction of height and reflector width have minor effect. Finally, the optimal parameter design is to change the distance from 78MM to 76MM and the reflector width remain as initial setting. The dosage energy is improved from 281mJ/cm2 to 306mJ/cm2 after the experiment. Thus, the UV Flexo printing quality is improved.
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