The printing plate is one of the important raw materials for the production of carton and carton, and its characteristics not only affect the printing production efficiency, but also directly affect the printing quality of the product. Due to the different structure and characteristics of the printing plate, its printing quality and cost are also significantly different. Then, according to the actual production conditions of the printing plant, the characteristics of the product and the characteristics of the printing plate, selecting the appropriate printing plate for printing is an important measure to improve the production efficiency of the carton and product quality. Types and characteristics of carton printing plates Carton printing plates are divided into metal and non-metallic types. Commonly used processes mainly involve gravure printing, flexographic printing and offset printing. Due to the different characteristics of printing plates, their printing effects and production costs are also different. Gravure plate characteristics The gravure products have thick and uniform ink layers, rich print layers, strong texture, and fast ink drying speed. In addition, they also have the advantages of fast printing speed, relatively stable printing ink color and quality, low printing color difference and high durability. If it is used in packaging products such as electronics, medicine, food and cigarettes with especially large printing volume, it can better reduce production costs. PS version features PS plate is currently the main printing plate of pre-printed carton. Its plate-making art is simple and fast. The plate-mounting operation is very convenient. It can print solid lines, lines, and fine-textured plates. It has good printing reproduction effect and printing price. Relatively cheap, widely used in printing carton tissue and carton packaging products. Characteristics of rubber printing plate Rubber printing plate is a common printing plate for flexographic printing art. Its soft material is widely used in direct printing of corrugated cardboard. When using a rubber printing plate, attention should be paid to its printing suitability, such as considering the ink affinity, ink transferability, coverage and reproducibility of rubber. Use water-based ink for printing, natural rubber printing plate is better than synthetic rubber printing plate; butyl rubber printing plate is more suitable for using solvent-based ink; nitrile rubber printing plate should try to avoid using solvent-based ink to prevent the printing plate from being Solvent corrosion damage. The rubber printing plate can not only print the substrate with rough surface, but also print on the harder material, and has higher printing resistance. However, it has the disadvantage of being easily deformed, so it is not suitable for printing high-precision products. Characteristics of photosensitive resin plate There are two types of photosensitive resin plates: liquid and solid. Among them, the liquid photosensitive resin plate is formed on the molding device, and the liquid photosensitive resin is plated to the required thickness. It has the characteristics of no pollution to the environment, low cost, high production efficiency, etc. It is more suitable for monochrome prints mainly based on text and lines and prints with low quality requirements. In the case of solid resin plates, a photosensitive plate is pre-coated by a printing plate manufacturer on a substrate such as a thin metal plate or polyester sheet to make a printing plate with a uniform thickness. The printing plate has better latitude, can reproduce finer high-gloss dot levels, and its expansion rate is much smaller than that of rubber printing plates and liquid photosensitive resin plates, so it is more suitable for making textured plates and line plates. However, the price of the solid photosensitive resin plate is relatively expensive, and the production cost is relatively high, so it is more suitable for packaging products with large printing volume. Reasonable purchase of carton printing plate For carton printing companies, the durability, printing quality and price of printing plates are all important factors related to the printing quality and production cost of carton products. So, how to fully consider these factors to make a reasonable purchase is an important issue facing the procurement management of carton printing enterprises. There are certain differences in the characteristics, quality and price of various printing plates on the market. Due to the differences in production conditions and processes, manufacturers of various types of printing plates also have differences in the quality of printing plates. Therefore, you should pay attention to this control when purchasing. When you try and use the printing plates of various manufacturers, you should make production records, such as the characteristics of the printed parts, the model of the machine used, the manufacturer of the printing plate, the printing volume and printing. The quality status is carefully recorded in order to analyze and summarize the characteristics and use effects of the printing plates of different manufacturers, and lay a reliable foundation for accurate evaluation and selection of printing plates. In addition, we must pay attention to the selection of suitable art for printing according to the characteristics of the product and the conditions of the printing plant. Because the three arts of gravure printing, flexographic printing and offset printing can print carton products, but the printing quality and production cost are different. Therefore, it is necessary to comprehensively consider according to the characteristics of the product, quantity and other factors, and choose the appropriate printing plate for printing, so that product quality and production cost can be better taken into account. Generally speaking, all large and medium-sized packaging and printing plants with gravure printing, flexographic printing and offset printing have large carton products with large printing volume, large area, strict color and printing quality requirements and relatively fixed layout. Optional gravure printing plate can be selected for printing; for products printed directly on corrugated cardboard, materials with rough printing surface, simple layout, partial text or patterns that need to be changed frequently or products that require multiple reprints, rubber plates can be purchased for printing ; Printed anilox plate, line plate, area is not large, the number of prints is about 30,000 prints at a time, products that can be frequently reprinted and facial paper that are frequently changed in local layout, resin plates can be purchased for printing; fine products, The printing area with a large graphic printing area and each batch of facial tissue products with variable printing volume can be printed with PS plate, which is not only conducive to ensuring the printing quality, but also improving the economic benefits. Reasonable selection of printing plate suppliers is crucial to the production of cartons and product quality. So how to choose suppliers reasonably? The author believes that the purchase control of the printing plate should be carried out on the basis of ensuring quality, and the price is relatively suitable, so that the printing quality and production cost can be better taken into account, so that the production and operation of the enterprise can get Benign development. Therefore, when choosing a plate supplier, you should pay attention to master the following control principles and control methods. 1. The quality of the printing plate should be good, the adaptability should be wide, and the price should be reasonable, which can meet the requirements of printing quality, and better reduce the production cost to enhance the competitiveness of the enterprise. 2. For large-volume, relatively fixed products, we should consider purchasing plates produced by large manufacturers as much as possible. Because printing plate manufacturers with large production scale and capability have better equipment performance, quality control and testing conditions in the production process, and the quality of the printing plate is relatively stable. 3. To record each batch of plates purchased and stored in the warehouse to maintain traceability. The production workshop should also pay attention to making records when using it to provide a scientific basis for data analysis and provide effective information for accurate evaluation and selection of qualified suppliers. The content of the record shall include the type of printing machine, paper type, specification and basis weight, surface gloss of the substrate, ink type, printing area and printing pressure. Special attention should be paid to arranging printing plates of two or more brands under the same printing conditions to test the quality of various printing plates. 4. It is necessary to control the inventory of the purchased plates. Rubber printing plates, photosensitive resin plates or PS plates are stored for too long and are prone to deterioration. Therefore, according to the shelf life and production status of the printing plate, grasp the appropriate inventory and master the first-first-use control principles to prevent The printing quality is affected by the deterioration of the printing plate. 5. To choose stable and reliable suppliers and implement fixed-point procurement. Production art practice is the best measure to check the reliability of the supplier and its printing plate. Therefore, when determining the supplier, it is necessary to pay attention to adopting the "comparison of goods" procurement method. Specifically, it is necessary to analyze and summarize the production and use and art test situation, make a scientific argument, and then determine the supplier to implement fixed-point procurement. In order to ensure the stability of product quality, it is best not to easily change suppliers. Even if some quality problems occur occasionally in the use of the printing plate, they should be treated correctly. The problem should be viewed in two in a scientific manner and through scientific analysis. , Communicate with suppliers in a timely manner, prompting them to continuously improve the quality of the printing plate. 6. Eliminate unqualified suppliers with frequent problems. In the process of printing production, if it is found that the printing plates are continuous and frequent, which affects the normal production and printing quality, we should consider taking out measures to stop purchasing the printing plates of unqualified suppliers to ensure the printing quality. In summary, the printing plate is an important raw material for carton printing, a medium for copying manuscripts, and a source of printing quality. Its importance is self-evident. In a sense, choosing a good supplier means choosing a printing plate with relatively stable quality. Only when a good printing plate is selected can the printing quality be reliably guaranteed. The price of a good printing plate is relatively high, which has almost become the law of the market. However, from a scientific, reasonable and economic point of view, it is not necessary for all products to use good printing plates in order to obtain good production results. For printing some ordinary products, the number is small, the layout is simple and the quality requirements are not For higher carton products, you can consider purchasing a printing plate that is relatively cheap. In this way, the durability of the printing plate and the printing quality are not a problem, and the production cost can be better taken into account. The author believes that this is also desirable. PVC Crossbody Bag,Round Handbag,Barrel Shoulder Bag,Brown Crossbody Handbag Dongguan Jinying Handbags Co.,Ltd , https://www.jinyingbeautybag.com
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