The causes of screen printing failures are many, involving many factors such as screen printing plates, screen printing plates, screen printing inks, screen printing equipment, screen printing materials, and operating technology.

Screen printing failures are caused by a single cause, but more often the result of the intricate cross-effects of various causes. This is the operator's special attention when determining the cause of the failure and taking corresponding countermeasures.

 First, paste.

Paste printing is also called blocking, which refers to the phenomenon that the screen printing plate can not transfer the ink to the substrate during printing. The appearance of this phenomenon will affect the print quality, and in severe cases, normal printing cannot be performed. After the scumming failure occurs, you can scrub with a suitable solvent according to the nature of the ink on the plate.

Second, the edges of the ink film are uneven.

In screen printing products, a common problem is jagged burrs on the edges of the printed ink film. There are many reasons for the burrs, but the main reason is the quality of the screen printing version. When the edges are found to be uneven, when the screen is remade, the light source is used to check under the light without installation.

Third, the printing position is not allowed.

Even if there are no problems with screen size, printing machine, etc., the shape of the printing material is inconsistent, the material shrinks too much and is inconsistent, etc. will cause the printing position to be inaccurate. Plastics or materials that require high temperature after printing should be baked at an appropriate temperature to allow the material to shrink before working.

Fourth, the printing plate leaks ink.

If dust is mixed on the substrate and the ink, and printing is performed without treatment, the plate film will be damaged due to the pressure of the blade, and pinholes will be caused due to insufficient exposure during plate making, which will cause the plate film to leak ink. At this time, you can use tape or the like to attach from the back of the plate for emergency treatment. If this operation is not very rapid, the ink on the plate will be dried, and the entire plate must be wiped with a solvent. Wiping the plate is also the cause of the plate film peeling, so avoid it. In addition, the portion where the ink of the plate leaks and stays often occurs, so it is better to strengthen this portion when making a plate.