Screen making process

Abstract

The production process of printing screen includes the following steps: firstly, applying the photosensitive resist on the screen plate, and making screen, making semi-finished product screen undergo the processes of exposure end washing with water, and making the photosensitive resist on the semi-finished product screen undergo the process of solidification treatment. In the process of making screen the additive medium can be directly spray-coated on the screen plate by means of screen-making machine, so that said ivnented screen plate has no joint seam, and can raise printing and dyeing quality.

Description

technical field [0001] The invention relates to a method for printing and screen printing nets. Background technique [0002] In the existing printing and dyeing and screen printing net-making processes, film is used as a medium to make printing screens. That is, first use a laser imaging machine as an image-generating device to print the pattern of the electronic document on the photosensitive film; and evenly coat a layer of light-sensitive photosensitive glue on the printing screen (rotary screen or flat screen) After drying at low temperature, cover the developed film on the net; after exposure, soak it in water and clean it. The film acts as a light-blocking medium, blocking light in the patterned areas. Since the photosensitive adhesive not covered by the film pattern will be firmly bonded to the printing screen after being irradiated by light, and the photosensitive adhesive covered by the film pattern will be easily washed away by water...

AI Technical Summary

Problems solved by technology

[0003] The obvious disadvantage of this process of making a rotary screen with film as a medium is that there is a seam at the beginning and end of the film when covering the film; this seam will leave a heavy gap on the finished screen. trace

This has a great impact on the quality of the final finished web

Especially when making fine patterns such as cloud patterns, it is almost impossible to repair the seam marks in the subsequent process, resulting in a decline in printing and dyeing quality

In addition, there will be a little gap between the film and the screen when it is covered, and this gap will cause the loss of fine dots due to the refraction of light during exposure.

It will also affect the quality of the network

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