What are the process points of silk screen printing on PET matte silver paper?

The process points of silk screen printing on PET matte silver paper involve many aspects, including material selection, plate effect production, printing process control and post-processing. Here's a breakdown of these points:

First, material selection

1.PET matte silver paper: PET (polyethylene terephthalate) material is very suitable as a matte silver label substrate because of its high strength, water resistance and good tensile and tear resistance. The matte silver effect is usually achieved by applying a coating containing a special paint such as matte powder to the PET surface.

2.Screen printing ink: Choosing a screen printing ink suitable for PET matte silver paper is crucial. The ink should have good compatibility and adhesion with the matte silver coating to ensure the clarity and durability of the printed pattern.

3.Screen: Screen printing screen is a key component in the screen printing process. The production of the screen requires precise control of the size and distribution of the mesh to ensure that the ink can be evenly and finely transferred to the PET matte silver paper.

Second, version effect production

1.Screen plate production: Screen plate production includes coating photosensitive adhesive, exposure, development and other steps. The production process needs to strictly control the exposure time and development conditions to ensure that the graphic and non-graphic parts of the screen version are clear.

2.Graphic design: In graphic design, the characteristics of PET matte silver paper and the limitations of the screen printing process should be taken into account. The design pattern should be concise and clear to avoid too complex details leading to poor printing effect.

Third, printing process control

1.Printing gap: A proper gap must be maintained between the plate and the PET matte silver paper so that the ink can be evenly transferred during printing. Too large or too small a gap will affect the printing quality.

2.Scraping pressure: The pressure applied by the scraping knife to the printing plate should be moderate. Excessive pressure may lead to the bending of the ink scraper, the definition of the picture decreased; Too little pressure may lead to inadequate ink transfer.

3.Scraping Angle and moving speed: The scraping Angle and moving speed formed by the ink scraper and the layout should be kept constant to ensure that the depth of the printed text is uniform.

4.Ink viscosity: The viscosity of the ink has a great impact on the printing quality. High viscosity may lead to difficulty in ink transfer; Too low a viscosity may result in blurred or enlarged images.

Fourth, post-processing

1.Curing: After printing is complete, it is usually necessary to dry or heat PET matte silver paper to cure the ink coating and improve durability and water resistance.

2.Cutting: Cut or die cut the printed label as required to meet the requirements of the specific application scenario.

3.Quality inspection: Check the appearance of the printed PET dumb silver paper label to ensure that the ink is uniform, the silver coating is complete, and there are no defects and stains.

In summary, the process points of silk screen printing on PET matte silver paper involve many aspects such as material selection, plate effect production, printing process control and post-processing. In actual operation, these factors need to be considered comprehensively to ensure that high-quality PET matte silver paper labels are printed.