Form: On the flat screen printing fabric, the appearance of the partial flower shape becomes lighter. When the students are alive, the overall pattern of the screen pattern is of color and color, the pattern is missing, and the flower shape is colorless.
Reasons: The density of the manuscript film is not enough; the process of flat screen plate making is not proper; the quality of the printing paste is not good.
Solution:
At the end of the film is currently using computer production. The higher the pattern density of the artwork to the black density, the better the shading effect. If the darkness is not enough, the shading effect is poor, and the UV light is easily transmitted, which can cause plugging. The fog of the shading film is low. If the fog is high, the ultraviolet light is blocked, and the exposure time needs to be extended. Finished, this can easily lead to over-exposure and cause plugging.
Flat screen plate development and curing operation process will lead to plug network. During development, it is necessary to consider that the UV light is transmitted from the printing surface of the screen to the squeegee. The printing surface is fully illuminated and can be washed with a relatively large amount of water. The degree of light cross-linking of the squeegee is smaller than that of the printing surface. Tender, rinse with a slurry of slurry that is free of pressure and rinse to prevent residual slurry from clogging the mesh. Before curing, double exposure is required to fully sensitize the adhesive layer and then coat the curing agent.
When printing, the used slurry contains impurities or undissolved particles to block the mesh so that the color paste cannot be scraped out of the mesh during printing, so the slurry should be filtered to remove impurities before use. Adhesives for the coating should be selected with good quality adhesives and good thickeners. The conjunctiva should not be too fast when printing.
Reasons: The density of the manuscript film is not enough; the process of flat screen plate making is not proper; the quality of the printing paste is not good.
Solution:
At the end of the film is currently using computer production. The higher the pattern density of the artwork to the black density, the better the shading effect. If the darkness is not enough, the shading effect is poor, and the UV light is easily transmitted, which can cause plugging. The fog of the shading film is low. If the fog is high, the ultraviolet light is blocked, and the exposure time needs to be extended. Finished, this can easily lead to over-exposure and cause plugging.
Flat screen plate development and curing operation process will lead to plug network. During development, it is necessary to consider that the UV light is transmitted from the printing surface of the screen to the squeegee. The printing surface is fully illuminated and can be washed with a relatively large amount of water. The degree of light cross-linking of the squeegee is smaller than that of the printing surface. Tender, rinse with a slurry of slurry that is free of pressure and rinse to prevent residual slurry from clogging the mesh. Before curing, double exposure is required to fully sensitize the adhesive layer and then coat the curing agent.
When printing, the used slurry contains impurities or undissolved particles to block the mesh so that the color paste cannot be scraped out of the mesh during printing, so the slurry should be filtered to remove impurities before use. Adhesives for the coating should be selected with good quality adhesives and good thickeners. The conjunctiva should not be too fast when printing.
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