Do 8 things well, don't worry about the production cost control of gravure printing
For a long time, gravure has been criticized for problems such as VOC emissions. And how to find the best balance between environmental protection and cost saving control is also an important issue that has always existed in the industry. 1. Print layout design In the process of printing layout design, try our best to present the highest quality printing effect with the simplest and most reasonable design. have to be aware of is: 1. For color-coded marks, slitting marks, bag-making marks, dot signal bars, etc., try to use smaller sizes and reasonable colors to reduce the process loss of substrates; 2. Reduce the use of spot color plates and spot color inks and replace spot colors with primary colors to save printing plates and inks; 3. Reduce the number of colors, optimize layout design, and reduce the overlapping rate of printing area. Second, the production and use of printing plates In the printing plate making process, try to use the filmless electronic engraving process to reduce the use of corrosion process; in the storage and use of the printing plate, pay attention to protecting the printing plate and improve the printing plate's durability. The printing durability is not only related to the quality of the chrome plating of the printing plate, but also greatly affected by the operation method. Good operating habits can significantly improve the printing resistance of the printing plate. When the printing plate is worn after a certain amount of printing is completed, the printing plate should be promptly dechromated and replated. Do not wait for the copper to be exposed before taking measures to avoid scrapping the printing plate. The scrapped plates should be returned to the plate-making factory for recycling. 3. Viscosity control and use of ink The viscosity of the ink directly affects the consistency of the hue of the printed product. If not properly controlled, it may cause a large amount of printing waste and loss of raw materials. Therefore, the ink viscosity should be reasonably controlled during the gravure printing process. Generally, an automatic viscosity control device can be used to control the viscosity of the ink, or a method of conveying solvent to the ink, capping the ink tray, ink barrel, solvent barrel, and piping the solvent to compensate for the effect of solvent volatilization on the viscosity of the ink. For spot color inks, energy-curable inks, and expensive special inks, ink tanks with a smaller volume should be used to reduce the amount of remaining ink; the ink tanks should be wrapped with waste film to reduce the amount of cleaning work on the ink tray during ink replacement and Solvent loss; the used ink tank should be cleaned to minimize ink residue. Fourth, the deployment of spot color ink When mixing spot color inks, in addition to recording the ratio of each color ink, an appropriate amount of ink samples should also be taken. When printing again, you can first mix the ink according to the proportion, and then use the ink scraper to scrape the sample, and compare it with the ink sample repeatedly until the appearance color of the two is not different before printing on the machine. This can solve the effect of ink color difference between different batches on the consistency of the hue of the printed product. Conditional gravure printing companies can also use computer color matching and distribution systems to improve the accuracy of ink color matching and minimize the remaining old ink in the ink library. V. Selection and use of scrapers The scraper is an important part of the gravure printing equipment. During the high-speed operation of the equipment, the scraper will inevitably be worn. Therefore, the scraper needs to be replaced after completing a certain amount of printing or replacing the printing plate. In order to reduce the number of squeegee replacements and save costs, measures such as reducing the squeegee angle and pressure, increasing the thickness, smoothness and hardness of the chrome layer of the printing plate, fully filtering the ink, keeping the substrate and the printing unit clean, etc. In addition, the used scraper can be reused after polishing or used in the field full-color printing group such as white plate; for long-version jobs or jobs with more difficult printing, a coating scraper can be used to maintain the same color Performance, reduce the incidence of printing failure, or use a combined scraper to improve the printing quality of the shallow mesh part, while saving the amount of the scraper, reducing the number of scraper replacements, and reducing the cost of the scraper. Six, the use of materials In order to reduce the waste of the printing material roll caused by the registration chase car during the printing start phase, the printing plate should be adjusted to the appropriate position to reduce the initial error of the plate, or the scrap or degraded materials should be used to adjust the car; precise control of the printing tension and other parameters , To achieve high-precision printing of printed substrates; when automatic feeding without stopping, make preparations for new material rolls in advance. When a large registration error occurs, switch to the automatic registration system after manual adjustment to avoid registration errors. And caused a lot of waste. In addition, it is necessary to do a good job to identify the bad printed materials, reduce the strength of the rewinding inspection work, and reduce the waste of materials in the post-printing process; make process records so as to achieve rapid registration when publishing again, improve production efficiency and yield . 7. Environmental Control of Gravure Printing Workshop Environmental factors in the gravure workshop include temperature, humidity, cleanliness, etc. Improving the environment of the gravure workshop has a great effect on improving the quality of printing and reducing printing failures. For example, under ambient temperature is too high or dry conditions, in order to ensure the effect of shallow screen printing, slow drying solvents have to be added, which will increase the drying load and the hidden danger of solvent residues. In this regard, the humidification system should be used in the dry season to effectively reduce static electricity and improve the effect of shallow screen printing. In addition, the clean production environment can prevent the film from adsorbing dust, which is helpful to reduce printing failures such as knife lines. 8. Waste recycling 1. The remaining ink in the ink tray and the ink tray should be sealed and sealed in time; the waste ink can be adjusted to black ink or other special color ink for reuse. The remaining ink that cannot be reused can recover the solvent in it. 2. The waste plastic film can be used for shunting or slitting for protective packaging of plastic pipes, doors and windows and other building materials. 3. The rags are graded and used to minimize the use of waste rags after cleaning the printing plates, platen rollers, guide rollers, ink tanks, and ink trays. 4. Separately collect various wastes generated in the printing process, recycle and reuse the film, paper, aluminum foil, carton, paper tube, baffle, ink barrel and other items, and waste cloth, sand net, sand paper, etc. Collected uniformly by the garbage collection station, and processed into resources or sanitary landfill. Small Gym Bag,Gym Bag For Men,Gym Backpack,Gym Bag Women Ningbo Fineweather International Trade Co., Ltd. , https://www.fwsbag.com