As one of the indispensable materials in the printing industry, the printing plate is not expensive, but it is also a key link for enterprises to reduce production costs, shorten the production cycle, and improve economic efficiency. It must be controlled in production. Possible ways to extend its useful life. So what's the solution?
The first thing to know is the correct exposure time. The film of the printing plate used by us is generally of the photo-decomposition type. If the exposure is excessive, the graphic elements will be affected and the service life will be reduced. Under normal circumstances, four-color color separation requires 3% of small outlets, and 98% of outlets are free from paste. Lines and texts are clear and cannot be removed.
Second, we must strictly control the plate developer concentration and development time. If the concentration is too large or for a long time, the film surface of the graphic part may be affected, the concentration is small or the time is short, the development is not thorough, the blank part is easy to get dirty, and the service life of the printing plate will be reduced. Therefore, when the developer is formulated, it must be strictly in accordance with the requirements of the manufacturer, and at the same time, the protective glue must be wiped.
Once again, the useful life of the plate can be extended by baking the plate. After suitable baking of the printing plate, the adhesive film can improve the adhesion, enhance the abrasion resistance and corrosion resistance, and thus greatly prolong the service life. However, baking must be good baking temperature and baking time, generally 200 ~ 220 °C, 10 ~ 15 minutes or so is appropriate, but also according to the temperature of the printing plate film to flexibly grasp. If the baking time is too long and the temperature is too high, the photosensitive resin film of the printing plate will be baked, or the printing plate base will be softened, which will reduce the service life.
Fourth, when printing, we must adjust the pressure of the water and ink roller on the printing plate. We should use proper dampening solution to strictly control the ink-water balance. If the pressure of water and ink roller is too large, the printing plate will be damaged; if the pH value of the fountain solution is too high, the diazo compound in the graphic part of the plate will be dissolved, resulting in incomplete graphics and affecting the printing quality. If the ink is too thick, the small particles of ink, binder, and rubber in the ink will increase the friction of the printing plate, and it will also accelerate the wear of the printing plate; if the plate is too watery, follow the weak acidic water hopper (for The combination of cleaning oil and corrosion also has a corrosive effect on the printing plate.
In addition, transportation, loading and unloading, edition, and revision are strictly carried out in accordance with regulations, careful and meticulous, to avoid damage to the printing plate, which is also to ensure the long service life of the printing plate.
The first thing to know is the correct exposure time. The film of the printing plate used by us is generally of the photo-decomposition type. If the exposure is excessive, the graphic elements will be affected and the service life will be reduced. Under normal circumstances, four-color color separation requires 3% of small outlets, and 98% of outlets are free from paste. Lines and texts are clear and cannot be removed.
Second, we must strictly control the plate developer concentration and development time. If the concentration is too large or for a long time, the film surface of the graphic part may be affected, the concentration is small or the time is short, the development is not thorough, the blank part is easy to get dirty, and the service life of the printing plate will be reduced. Therefore, when the developer is formulated, it must be strictly in accordance with the requirements of the manufacturer, and at the same time, the protective glue must be wiped.
Once again, the useful life of the plate can be extended by baking the plate. After suitable baking of the printing plate, the adhesive film can improve the adhesion, enhance the abrasion resistance and corrosion resistance, and thus greatly prolong the service life. However, baking must be good baking temperature and baking time, generally 200 ~ 220 °C, 10 ~ 15 minutes or so is appropriate, but also according to the temperature of the printing plate film to flexibly grasp. If the baking time is too long and the temperature is too high, the photosensitive resin film of the printing plate will be baked, or the printing plate base will be softened, which will reduce the service life.
Fourth, when printing, we must adjust the pressure of the water and ink roller on the printing plate. We should use proper dampening solution to strictly control the ink-water balance. If the pressure of water and ink roller is too large, the printing plate will be damaged; if the pH value of the fountain solution is too high, the diazo compound in the graphic part of the plate will be dissolved, resulting in incomplete graphics and affecting the printing quality. If the ink is too thick, the small particles of ink, binder, and rubber in the ink will increase the friction of the printing plate, and it will also accelerate the wear of the printing plate; if the plate is too watery, follow the weak acidic water hopper (for The combination of cleaning oil and corrosion also has a corrosive effect on the printing plate.
In addition, transportation, loading and unloading, edition, and revision are strictly carried out in accordance with regulations, careful and meticulous, to avoid damage to the printing plate, which is also to ensure the long service life of the printing plate.
Modern Sofa Legs,Aluminium Furniture Legs,Aluminium Furniture Bed Legs,Metal Cabinet Leg
JOKER UNO LIMITED , https://www.jokeruno.com