Sealing ink is a special type of ink used in the packaging industry, and its basic components are pigments, resins, additives and soluble solvents. Sealing ink can form a sealing layer after printing, which can effectively protect the items in the package, improve the packaging's moisturizing, anti-oxidation, moisture-proof, and deodorizing properties, and extend the shelf life of the items. Sealing ink has the characteristics of good sealing, printability, heat resistance, chemical resistance, etc., so it is widely used in the packaging industry.
The performance of sealing 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 |
|---|---|
| Sealing performance | Sealability, moisture resistance, oxidation resistance, moisture retention, and deodorization of packaging |
| D | Clarity, color accuracy, gloss, adhesion of printed patterns |
| Packaging material adaptability | The adaptability of ink in different materials and different temperatures |
| Packaging Durability | Durability, heat resistance, chemical resistance of packaging under different conditions |
| packaging cost | Packaging material usage, printing speed, ink cost |
The following are commonly used test methods:
Sealing performance test: apply sealing ink to packaging materials, and carry out sealing performance test, including tests of moisture resistance, oxidation resistance, moisture retention, deodorization and other indicators.
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.
Packaging material adaptability test: Apply sealing ink to different packaging materials and test its adaptability under different temperature conditions.
Packaging Durability Test: Put the packaging under different conditions, such as high temperature, low temperature, humidity, chemicals, etc., to test its durability, heat resistance and chemical resistance.
Packaging cost test: record the usage of packaging materials and printing speed, calculate the cost of ink, etc.
After the test, it is necessary to analyze and evaluate the test results, propose improvement measures, continuously optimize and improve the performance of the sealing ink, reduce costs, and increase production efficiency.