The reasons for color deviation of UV flexo ink in printing non-woven fabrics can be summarized into multiple aspects. The following is a detailed analysis of these reasons:
1、 Ink problem
Ink quality: The quality of UV flexographic ink directly affects the printing effect. If the ink has poor color stability, uneven color concentration, or contains impurities, it may lead to color deviation in printed materials.
Ink mixing: When mixing ink, if the mixing ratio of various colors of ink is not accurate, or if errors occur during the mixing process, it will result in the final printed color not matching expectations.
Ink expiration: UV flexographic ink has a certain shelf life, and the color stability and performance of expired ink will decrease, making it prone to color deviation during use.
2、 Equipment issues
Nozzle state: The nozzle state of the UV flexographic printer directly affects the ink spraying effect. If the nozzle is clogged, worn, or improperly adjusted, it can cause uneven ink spraying, resulting in color deviation.
Equipment accuracy: The printing accuracy and stability of the equipment are also important factors affecting color deviation. If the accuracy or stability of the equipment is not high, it will result in the inability to ensure color consistency during the printing process.
3、 Substrate issue
Characteristics of non-woven fabric: As a special printing substrate, the surface characteristics, ink absorption, color background, and other factors of non-woven fabric can affect the adhesion and drying effect of ink, thereby affecting the printing color.
Substrate consistency: Non woven fabrics from different batches or manufacturers may have differences in color, texture, and other aspects, which can also lead to color deviation in printing.
4、 Environmental factors
Temperature and humidity: The temperature and humidity in the printing workshop have an impact on the drying speed and color stability of ink. If temperature and humidity are not properly controlled, it can lead to poor ink drying or color changes.
Lighting conditions: When observing the color of printed materials, different lighting conditions can also lead to visual differences in color. Therefore, when evaluating color deviation, it is necessary to ensure that it is done under the same lighting conditions.
5、 Operational issues
Parameter setting: During the printing process, improper parameter settings of the equipment (such as speed, pressure, temperature, etc.) can affect the transfer and drying effect of ink, leading to color deviation.
Color management: Lack of an effective color management system or poor implementation can also lead to color deviation. For example, no standard color samples were used for comparison, and equipment was not calibrated regularly.
6、 Other factors
Software issue: Improper settings of image processing software or RIP software may also result in color deviation. For example, incorrect color management settings, insufficient image resolution, etc.
Human factors such as the skill level, experience, and sense of responsibility of operators can also affect color deviation. For example, improper operation, careless observation, etc. can all lead to color deviation.
The reasons for color deviation of UV flexographic ink when printing non-woven fabrics are multifaceted. To solve this problem, it is necessary to conduct comprehensive analysis and improvement from multiple aspects such as ink quality, equipment status, substrate characteristics, environmental conditions, and operating standards.
If the problem persists, please contact StarColor: eva@starcolor-ink.com