How to make a plate for screen printing?

There are two methods: direct plate making method and indirect plate making method.

First, the direct plate-making method

Methods: The direct plate-making method is to spread the photosensitive film on the working surface, coat the photosensitive material on the wrist plate base, spread the slender wrist net rack on the film base, then put the photosensitive paste on the net rack, press the photosensitive film with a soft scraper to make it completely dry, take out the plastic plate base, and then stick the photosensitive film on the wrist to make a plate. After the screen is developed and dried, it can be made into a plate.

Process flow: stretching the screen-degreasing-drying-peeling the film base-exposure-development-drying-revision-sealing the screen.

Second, the indirect plate-making method

Methods: The indirect plate-making method is to expose the indirect film, harden it with 1.2% hydrogen peroxide, rinse it with warm water and dry it in the air to make a strippable graphic negative. In plate making, the film surface of graphic negative is attached to a slender screen, and the film is pressed on a wet screen, and the screen can be made by air drying after removing the film base.

Process flow:

1) Stretching net-degreasing-drying

2) indirect film exposure hardening development

1) and 2)—— Bonding —— Blow-drying —— Correction —— Sealing the net.

3) Straight chamber mixed plate-making method

First, use water, alcohol or photosensitive glue to stick the photosensitive glue layer on the screen frame, after hot air drying, remove the film base of the photosensitive glue, and then make plate making and development to make the screen board.

Extended data:

Advantages of screen printing:

(1) is not limited by the size and shape of the substrate.

Generally, printing can only be carried out on a plane, while screen printing can be carried out not only on a plane, but also on shaped objects such as spherical curved surfaces. Anything with a shape can be carried out by screen printing.

(2) Soft layout and low printing pressure

The screen is soft and elastic.

(3) The ink layer has strong coverage.

It can print pure white on all-black paper, with strong stereoscopic effect.

(4) Suitable for all kinds of inks.

(5) Strong optical rotation resistance.

Can make the gloss of printed matter unchanged (temperature and sunshine have no effect). This makes it possible to print some self-adhesive without additional lamination and other processes.

(6) Flexible and diverse printing methods.

(7) The plate making is convenient, the price is cheap and the technology is easy to master.

(8) Strong adhesion

(9) It can be printed by hand or by machine.

(10) is suitable for long-term display, and outdoor advertising is expressive.

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