- The glass screen printing machine is divided by use. It can be said that all glass processing cannot be separated from the Hot Air Stenter Machine if it is to be screen printed. If roughly divided into: automotive glass screen printing machine, engineering glass screen printing machine, furniture glass screen printing machine, home appliance glass screen printing machine and advertising glass screen printing machine.
- Patterns or lines are flowery
Hot Air Stenter Machine screen printing is too many, caused by the slack of the screen template; loose positioning, the distance between the screen and the substrate changes; the angle between the squeegee and the substrate is incorrect, or the force is uneven; the thickness of the printing material is too thin or too dry ; After cleaning the printing surface of the reworked workpiece, the solvent will not be able to dry out and screen printing.
- Distorted lines
The printing material is mixed too thinly, and the scraping is too strong; the printing material is unevenly adjusted (the solvent in the printing material is unevenly dispersed); the solvent or cleaning agent on the screen mold is not dry after the screen is wiped, or the surface of the workpiece is cleaned when rework The agent is not dry or clean; after the first squeegee, the sealing force of the printing material is too large, so that a small amount of printing material is squeezed out of the mesh; the squeegee movement (moving) speed during printing is too different in the effective area of the substrate , Pause or repeat printing, etc.; the fineness of the printed material does not match the number of screen meshes selected.
- There are pits, the printed material is too sticky, and there are impurities, blocked holes; or the printed material is too sticky, and the scraping force is insufficient;
The surface of the substrate is not clean and oily; the printing material is too sticky, there is dirt on the screen mold that has not been removed, the printing material has large particles, and the high-mesh screen cannot pass; the screen printing drying speed is too fast, and the screen printing workplace is exhausted; fast drying The printing material has not been sealed in time, resulting in netting; uneven force during scraping, large or small; uneven surface of the substrate, etc.
- Pattern line edge burrs, gaps, cams, etc.
The maturity period is not enough when the printing material is mixed, the residual bubbles in the printing material are not cleaned, and the bubbles are stuck on the substrate after screen printing; the surface of the substrate is not clean, dust and other influences, improper force during printing, unevenness or scratching , Insufficient strength; the printing material on the substrate is not dry, and the storage place is caused by dust; the distance between the screen and the substrate is too large under the proper conditions of the printing material;
When we encounter these problems, we should carefully analyze the reasons that affect the quality of the Hot Air Stenter Machine screen printing products according to the above points, and solve the causes. As for the quality problems that occur in non-scratch printing operations, such as web stretch problems, Optimal distance issues, screen printing template production issues, Flat Screen Printing Machine Factory workpiece surface treatment issues, and printing material selection, etc. will affect the quality of silk screen printing. These are all places we should pay attention to.