Glass Screen Printing Machine

As a material for architectural decoration, glass has the advantages of being flat and transparent and easy to scrub. The pattern of glass after screen printing is exquisite and beautiful, and it can be colorless or colored. It is more popular for building decoration and substantially meets people’s aesthetic needs. People use screen printing to print images directly onto the glass surface. Screen printing could also be used to make preservatives, etc., on parts of the glass surface, so that they are not affected by etching or sanding. It is also possible to directly print special inks to create an engraving or matte effect. You can see screen-printed glass everywhere of your life, such as display windows, building partitions, building exteriors, car windshields, glass bottles and more. At the same time, they are also widely used in furniture decoration and game tools, as well as in countless decorations and artistic creations.

Glass is an amorphous inorganic material that softens as the temperature increases, it will deform and when heated to the softening temperature. During the colored glass screen printing, each color requires a separate film design. After decorating the ink screen on the glass, sometimes they need to heat and sinter the ink to “burn” the ink onto the glass to fix the image and get a colorful decorative pattern. However, the sintering temperature must be lower than the softening temperature of the glass to be printed to make sure that the glass will not be deformed. Generally, the sintering temperature for the glass glazes should be lower than 520 ° C, usually between 480 ° C to 520 ° C.

Combine glass screen printing with other processing methods, you will get better artistic effects. For example, etching, ice patterned, frosting, and defogging, etc could achieve by glass surface process and accomplish a variety of artistic effects and practical functions.

The production process of embossed glass is to print the cosolvent on the glass surface first, then sprinkle the glass particles and fuse the then by 500 ° C – 590 ° C high-temperature sintering, to obtain empaistic glass.

The silkscreen etching process is to screen print the anticorrosion material on the glass surface in the designed pattern to form a resist membrane. The portion out of the resist membrane is exposed to be etched, and the etching is performed by hydrofluoric acid.

The production method of frosted glass by screen printing is as follows — screen printing the pattern on the glass surface with a refractory agent. After high-temperature baking, the area out of the screen printed refractory pattern will melt and become transparent, and the printed part will form a special frosted image.

Electric heat defogging glass also realizes by screen printing. To prevent the condensation of water vapor on the window glass, screen print the electrically conductive ink in lines on the glass, and fix them by heating. When the window is foggy, the lines generate heat through the current, increase the temperature of the glass surface, and remove the water vapor.

The glass screen printing application will continue developing and expanding its appeal in glass decoration. In addition to its suitability for substrates of various glass materials, another important reason is screen printing could meet glass substrates in different sizes and weights. Moreover, due to the absolute superiority of screen printing in ultra-large format image printing, it has strengthened its leading position in the development of the entire glass printing industry. In particular, in recent years, the demand for large-format flat glass printing has risen sharply.

Glass screen printing machine can be said that all glass processing can not be separated from glass screen printing machine if it is to be screen printed. If divided into the following, it can be 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.

Pattern or line hair
The screen printing machine has too many silk screen printing, and the screen stencil is loosened; the distance between the loose screen and the substrate changes; the angle between the squeegee and the substrate is not correct, or the force is uneven; the consistency of the printing material is too thin or too dry; The substrate surface of the reworked workpiece is cleaned and the screen is dried after the solvent is applied.

Line distortion
The printing material is too thin, and the printing force is too strong; the printing material is unevenly adjusted (the solvent in the printing material is unevenly dispersed); the solvent or the cleaning agent on the net mold is not dried, or the surface is cleaned when the workpiece is reworked. The agent is not dry or dirty; after the first scratching, the printing net sealing force is too large, so that a small amount of printing material is extruded into the mesh; the speed of the moving (moving) of the printing plate in the printing is too large within the effective area of the printing substrate. , pause or repeat printing, etc.; the fineness of the printed material does not match the selected mesh number.

There is pitting printing material is too sticky, and has impurities, plugging holes; or the printing material is too sticky, insufficient printing power;
The surface of the substrate is not clean and oily; the printing material is too sticky, the dirt on the net mold is not removed, the particles of the printing material are large, the mesh of the high mesh is not passed; the drying speed of the silk screen is too fast, the screen printing workplace is exhausted; The printing material failed to seal the net in time to produce a netting; the unevenness of the printing was uneven, or large or small; the surface of the substrate was uneven.

Pattern line edge burrs, notches, cams, etc.
When the printing material is prepared, the maturity period is not enough. The residual bubbles in the printing material are not running clean. The air bubbles are stained on the substrate after the silk screen printing. The surface of the printing substrate is not clean, the dust is affected, the printing force is improper, the light is uneven or the printing is performed. The force is insufficient; the printed matter on the substrate is not dry, and the storage place is caused by dust; under the proper conditions of printing, the distance between the screen and the substrate is too large; the pre-press screen cleaning is not complete.