Because the screen printing application range is very wide, so the screen printing ink requirements are more strict. Therefore, in order to meet the different requirements of printing ink products, screen printing ink to do the following aspects of the test.

(1) Adhesion test to determine the degree of adhesion of ink on different materials.

The flexibility test through the druj test ink and substrate material attachment firmness.

The rubbing resistance is mainly on the printing surface of cloth, paper, film and other materials for strong operation test, in order to check the degree of adhesion and firmness of ink printing materials.

(4) abrasion-resistant cotton printing surface after sunlight exposure, the cotton cloth for a certain number of friction, inspection of cotton cloth pollution degree.

Weather resistance also includes light resistance. Weather resistance is usually placed outside the printing material, wind and sun, rain and other tests, to test the color change of printing pigment, fading degree and printing ink film decomposition, color change degree.

⑥ Heat resistance, cold resistance because some printed matter to be used at different temperatures. So some printing after printing through high temperature processing, some printing after printing is to go through low temperature processing. Through heat resistance and cold resistance test to test the degree of ink at different temperatures.

The heat resistance test is usually on the printing surface of the unit area, adding a certain amount of warm water for a certain time, to test the degree of water pollution. In particular, observe the degree to which the pigment in the ink dissolves in water to determine whether the ink is suitable for printing such as edible utensils and toys.

Oil resistance oil resistance refers to the adaptability of grease, mechanical oil, which is different from solvent resistance.