1. How to dissolve the release powder?
The release powder dissolves slowly in water and cannot be dissolved at one time. The correct method of dissolution should be water multiple times, first dissolve a part of the decantation, then add fresh water, stir and dissolve, then pour it out, so that it can be divided into 4-5 times, and it can completely dissolve completely.
2. Dissolving release powder, with or without solvent, speed up the dissolution rate?
When the stripping powder is dissolved, a small amount of acid can be added, and 1-2 ML per kg of water can effectively accelerate the dissolution rate.
3. Is latex toxic? Photosensitive powder?
Latex is a basically non-toxic colloid, and the photosensitive powder is also non-toxic, but it cannot be imported.
4. Is it fast or slow?
The speed of coating the photosensitive adhesive should not be too slow, the glue can easily leak to the ink surface, and it can easily cause uneven glue, too fast speed, easy to produce pinholes. The emulsion should be coated at a suitable coating speed. Medium uniform coating is generally used.
5. Can you brush with a brush?
Brush can not be used to brush sensitized plastic, one brushing is uneven, and the second is the surface of the brush is not smooth. Can only be hard, preferably coated with stainless steel gluing.
6. How to apply the screen below 100 mesh?
Screens coated with coarse mesh, such as screens of 30 mesh and 50 mesh, often have many pinholes. To compensate for the fact that the number of coarse meshes is difficult to apply, one is that the photosensitive adhesive is thicker and the first coating is used. The printing surface should be scraped back and forth several times to make the screen fully wetted, and then the ink surface should be evenly glued. After drying, on the printing surface, it should be applied 2-3 times in a row, and the speed should be slightly faster.
7. How many lines can be reached in screen printing?
Generally can reach 80 lines, up to 100 lines, from the print definition, 80 lines and 65 lines of visual effects are better, the number of lines is high, the network is easy to paste.
8. How to control the stretch netting screen
Such as making red, blue, yellow, black, four sets of color plus screen, stretch angle can be 0 degrees, 4 degrees, 0 degrees, 12 degrees.
9. Screen printing, how to prevent the occurrence of moiré?
First, we must choose a uniform weaving screen, some visually uneven screen can not be used for screen printing, and the other according to the angle of the screen, generally do not produce moire.