[today's hot spot] China's anti dumping investigation on Japan's PMMA?! Details determine success or failure. As a very important part of the printing process, the process of plate making determines the quality and beauty of printed matter in detail. Good plate making makes the printed matter look comfortable and difficult to find problems; bad plate making will make the printed matter look awkward, and the details are not up to standard. If your printed matter looks strange, and there are many problems in details, 80% of them are in the plate making process. Comply with the plate making process requirements, you can make your print more perfect. This paper will introduce the process requirements of plate making.
Plate making process requirements 1. Product classification: product classification should be clear, such as books and periodicals, calendar, cigarette bag, three side sealing bag, middle sealing bag, middle sealing folding bag, fusing sealing bag, rolling film, label and covering film. 2. Font line: the text should not be less than 1.5mm. Try to use equal line characters. Small text lines should not be multi-color hollow out or overprint. The line width in embossing is greater than or equal to 0.15 mm, and that in overprint is not less than 0.3 mm. 3. Size: cross line indicating the size range. Clear the size and position of the cursor. 4. Transition color and light network: the minimum proportion of transition color shall not be less than 10%, and the length of transition color shall be considered to be uniform transition without obvious grid connection. Spot color should be used for light screen with 20% or less, so as to ensure uniform ink color and no loss of dot. 5. When the characters and the background color are the same color, the net gap between the background color and the character color should be widened to more than 50%, so that the characters can be easily read. 6. Problems such as imprinting, overprint and pallet should be explained clearly. 7. The full version background color should be bleeding 1-2mm, its function is to protect the finished product in cutting, so that the background color completely covers the part to be expressed. 8. The requirements for deepening engraving of line version or separate carving of hierarchical lines shall be indicated. 9. Increasing requirements of unit length and plate cylinder diameter: Based on the factors of ink drying and overprint during printing process, the substrate material will produce tensile deformation under the joint action of drying temperature and tension. Under a certain tension, the base film is elongated, and after removing the tension, it will obviously shrink back. Therefore, the unit length can be pre adjusted according to material shrinkage and process characteristics of our factory and customers. For example: pet-0.1%, bopp-0.3%, pa-0.6%. However, there are many exceptions, such as the size of extruded composite film will become longer and the customer only allows negative deviation, which needs to be adjusted according to the specific situation. As the substrate material elongates in the longitudinal direction during the printing process, the diameter of the printing plate cylinder increases by color according to a certain proportion, so as to make up for the change of the length direction of the printing material and achieve the purpose of accurate overprint. The wood industry uses the plate cylinder diameter increment of 0.3 mm, that is, the first color of the same set of plate cylinder diameter is the set value, and from the second color, it increases by the same amount.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.