UV curable ink is a widely used ink type in printing and coating industry, its basic components are pigments, resins and photoinitiators. After printing or coating, the UV curable ink can be quickly cured and dried by the action of UV photoinitiator. Compared with traditional solvent-based inks and water-based inks, UV-curable inks have the advantages of fast drying, bright colors, strong adhesion, etc., and are environmentally friendly without volatile organic compounds (VOC), so they are widely used in the printing and coating industries.
Detection performance
The performance of UV curable inks can be tested and evaluated from different angles. Here are some performance types that may need to be tested and metrics that may need to be recorded:
| performance type | index |
|---|---|
| D | Clarity, color accuracy, gloss, adhesion of printed patterns |
| stability | Ink stability, drying speed, fade resistance |
| Environmental adaptability | Ink adaptability, performance under different temperature, humidity and light conditions |
| light curing effect | Light curing speed, full curing time |
| Packaging tightness | Sealing of ink packaging, storage time after use |
Test Methods
The following are commonly used test methods:
Printing effect test: Use a printing machine or sample printing equipment to print according to standard test methods and requirements, and check and evaluate the printed matter. Aspects such as graphic clarity, color accuracy, gloss and adhesion are typically checked.
Stability test: Put the ink under different environmental conditions in the laboratory, such as high temperature, low temperature, humidity, etc., and observe its performance. It is also possible to test the stability of the ink on different media, such as paper, plastic, metal, etc. Evaluate its drying speed, fade resistance and more.
Environmental adaptability test: Put UV curable ink under different environmental conditions, such as high temperature, low temperature, high humidity, low humidity, etc., and observe its performance. It is also possible to test the suitability of the ink on different media, such as paper, plastic, metal, etc.
Photocuring effect test: Use standard test methods and equipment to test the photocuring effect of the ink, including indicators such as photocuring speed and complete curing time.
Package Leakage Test: Using standard test methods, test ink packaging for airtightness and evaluate its performance during storage time after use.
Before testing, it is necessary to formulate a test plan and test process, clarify test objectives and indicators, select appropriate test equipment and methods, and record test results and data. After the test, it is necessary to analyze and evaluate the test results, propose improvement measures, and continuously optimize and improve
The performance of UV curable inks to meet market and customer needs. At the same time, it is necessary to pay attention to the standardization and consistency of test equipment and test conditions to ensure the accuracy and comparability of test results.
