Solvent-free photosensitive adhesive stripping method

Screening method for solvent resistance type photosensitive adhesive

When the printing is completed, various ink stains on the screen screen can be used directly with a hole-opening agent, preferably with a solvent such as industrial-grade cyclohexanone, and continuously scrubbed on the surface of the scraper and the printing surface, especially the scraper surface. Until clean.

Ink on the screen can not be directly removed after the film removal, because the screen plate still exists solvent and other components, must be removed again, available 5 ~ 10% sodium hydroxide solution, and then use industrial detergent or screen cleaning The agent is washed in the sink until the screen plate is clean without any solvent components.

Stripping is a particularly important process. Take a few drops of the stripping solution on both sides of the screen plate, evenly apply, and slowly remove the adhesive layer until it is clear and then spray it with a high pressure water jet.

Sometimes, there are unclear characters and images on the screen screen, which cannot be removed by the stripping solution. This is due to the fine ink and stain left in the screen mesh. At this time, it can be directly wiped off with solvents, such as cyclohexanone, pore formers, etc. The text and images on the screen plate will be slowly dissolved by the solvent, but the screen plate is still not as clear as new. At this time, the detergent or toothpaste will be wiped gently on the surface of the scraper and the printing surface, and some cyclohexanone and solvents will be placed on the screen until the characters and images on the screen plate disappear. The reason for this is that cyclohexanone can dissolve and eliminate impurities, remove tiny inks and stains from the mesh, and the particles of the decontamination powder are relatively fine. The screen mesh below 300 mesh can pass smoothly, and the mesh can be All the residues are brought together. Then rinse with a high pressure water gun, and finally neutralized with glacial acetic acid, washed and dried.

More than 300 mesh screen, solvent-resistant photosensitive adhesive stripping

More than 300 mesh, solvent-resistant photosensitive adhesive film regeneration:

It is much more difficult to remove high-mesh screens with a mesh size of 300 mesh or more than low-mesh screens. The higher the mesh number, the harder it is to remove the plates. High-mesh screen meshes have small meshes, and the wire diameters are very fine. The decontamination pastes are relatively coarse and the meshes of high-mesh meshes cannot pass. It is easy to block the mesh, damage the mesh, etc., so the number of meshes is high. Screen version of the general use of DX grinding paste. Grinding paste particles are very fine, cleaning and decontamination function is good, use the grinding paste to make the screen cleaner and cleaner. Grinding paste price is slightly expensive, usually the following 300 mesh screen generally use decontamination powder, but the high mesh number mesh must use grinding paste. The high-mesh screens have the same method of removing the film as the number of coarse meshes. A particularly important aspect is that after the printing is completed, the ink on the screen must be removed. It is best to release the ink immediately. The longer it takes, the more difficult it is to remove the printing. The final cleaning is done with a grind.

Zhou Yuruo

Reprinted from: Active Web Forum