How to judge the compatibility of an ink and BOPP synthetic paper?

To determine the compatibility of an ink and BOPP synthetic paper, we can mainly investigate the following aspects:

First, the physical and chemical properties of ink

1.Surface tension: The surface tension of the ink should match the surface tension of the BOPP synthetic paper to ensure that the ink can fully moisten and adhere to the surface of the synthetic paper. In general, the surface tension of the ink should be slightly lower than or equal to the surface tension of the synthetic paper.

2.Viscosity: The viscosity of the ink should be moderate, neither too thick to make it difficult to print, nor too thin to lead to poor printing effect. Proper viscosity helps the ink transfer evenly during the printing process and firmly adhere to the synthetic paper.

3.Drying performance: The ink should have good drying performance and be able to dry quickly after printing to avoid adhesion or contamination of subsequent processing equipment. For BOPP synthetic paper, due to its smooth surface, the drying speed of the ink may be affected, so special attention needs to be paid to the drying performance of the ink.

Second, printability test

1.Adhesion test: The adhesive fastness of the ink on the BOPP synthetic paper is evaluated by tape testing and other methods. The specific operation is to print the ink on the synthetic paper, and use a pressure sensitive adhesive tape with large adhesion force to stick to the ink after drying and quickly tear, and observe whether the ink falls off from the synthetic paper. If the ink stripping phenomenon is serious, it means that the compatibility of ink and synthetic paper is poor.

2.Printing effect evaluation: Observe the printing effect of ink on BOPP synthetic paper, including color brightness, gloss, clarity, etc. If the printing effect is not ideal, such as dim color, poor gloss, blurred handwriting, etc., it may be a sign of poor compatibility between ink and synthetic paper.

Third, practical application test

The stability and consistency of printing ink on BOPP synthetic paper were observed by small batch trial production in actual production environment. The compatibility of ink and synthetic paper and the feasibility of printing process can be evaluated more comprehensively through practical application tests.

Fourth, professional testing and certification

If conditions permit, the ink sample can be sent to a professional testing organization for testing and certification. More accurate ink performance parameters and compatibility evaluation results can be obtained through professional testing, providing strong support for production.

In summary, to judge the compatibility of an ink and BOPP synthetic paper, it is necessary to consider the physical and chemical properties of the ink, printable suitability test, practical application test and professional testing and certification. In actual operation, appropriate test methods and evaluation standards can be selected according to the specific situation.