Printing process design points
Product quality should be * production, not * inspection. With advanced printing equipment, high-quality raw materials, and good-quality operators, we must also have appropriate process design and strict process control. A stamped iron product, which is painted from the front or printed with white paint, or coated with white paint, painted with color, or painted on the back, requires a variety of materials and baking times. It requires a variety of equipment and people. Multi-machine collaboration. Any one (one set) process quality is critical, and the previous process is no better. If it cannot meet the process requirements of the post process, it will not be possible to complete the production smoothly. Any errors in any one step will affect the quality of the final product. . This requires us to have an overall plan for the entire printing process before production to ensure that the entire printing production process is in a controlled state, so that production can be smoothly carried out and product quality can be guaranteed.
In reality, many companies often have no uniform process management and lack of communication between workshops and processes. Prepress and printing, printing, and postpress processing are often out of touch. Even if there are good designs, the printed results are not satisfactory. ; Printed well, but it is difficult to postpress. Therefore, to improve the printing quality, it is necessary to start from the process design. The following points should be noted when designing the printing process.
1. Enterprises should attach importance to the role of process design in the management of print quality. To establish relevant process design and management departments, allocate necessary personnel and resources, and assign corresponding powers. At present, China's small and medium-sized printed iron companies do not have specialized technical management departments. There is a lack of communication between the business department and the production department. In order to receive orders, the design time unilaterally pursues special effects to cater to customers. Although orders are obtained, the production process of the company is difficult to cooperate with or even cannot produce normally. Often customers are satisfied with the design and are disappointed with printing the finished product. An important cause of product quality problems is the graphic design process is not standardized, in fact, these can be avoided by only a little attention before printing. Therefore, companies should pay attention to process design, according to the different orders, combined with the actual plant, to carry out the necessary process planning before printing, and for the special requirements of the product should also organize the relevant process managers, technical experts for research, further Define the process requirements and quality standards, and define the guidance documents for each process to determine what to do, how to do it, and to what extent, to avoid the blindness of the work, to ensure that all process guidelines are put in place so that production can be coordinated and smoothly carried out.
2. Process design should establish a global concept The characteristics of multi-process prints mean that the printing process is also a systematic project. It is necessary to comprehensively consider the process requirements from prepress to printing to postpress processing. In the design of the process, they can adjust each other and avoid weaknesses, which will undoubtedly play a multiplier role. If the monochromatic ink is thickly printed but overprinting accuracy is not high, multi-color machine overprinting accuracy is high but multi-color overprinting is easy to stick dirty. The layout design and even the production arrangement can be considered for this, which has great influence on the operation and printing quality.
3. The process design must have the awareness that the process is for the next process. The “cost reversal†is highly respected because it is very effective in cost control. Similarly, the printing process control should also be “process reversalâ€. Printing and copying is an interconnection process based on manuscripts, plate making, and printing. After receiving a printing order, it is necessary not only to understand the use of the product, the object of application, and the use environment, but also to consider various problems that can be encountered in the printing process, and how to adapt to the operation of the next process and improve efficiency. All should be predictable. Therefore, the process design must fully consider the possibility and economy of the post-process construction, which is crucial to the smooth progress of the entire production and product quality. Raw materials are an important factor affecting product quality. Today, the quality of home-made printed materials has greatly improved. However, one question that cannot be ignored is whether or not it can be used “in accordance with the material applicationâ€. It is based on the technical requirements of printing products and equipment performance to select suitable raw materials, or print products based on existing materials, which also largely determines the quality of products. It is necessary to establish the consciousness of the process for the sake of the next process, and to set production and order by production, to achieve "in accordance with the use of materials," raw materials and products, processes and equipment, including the use of conditions, etc., in order to make the best use of, reduce Improve product quality due to material induced problems.
4. The relevant technical basis should be mastered. The process design is based not only on the theory of print reproduction science, but also on the strict development of process management, material and technical test data, and standardized data on technical process operations. Therefore, the following aspects should be noted.
(1) The process designer must devote himself to the process design and management work, fully grasp the production process of the whole printing process and the practical experience of the main technical links, including the cultivation of artistic accomplishments.
(2) The determination of the process plan must be based on the stable, reliable and repeatable standardized data in the entire production process, and it can be appropriately adjusted upwards, which is conducive to the continuous improvement of the quality level.
(3) For unforeseen or unstable factors to be tested in advance, there are corresponding preventive measures, so that the final program will not be sparse.
(4) Process design and management personnel should in-depth production of the first line at any time, on-site tracking of product production and quality control to verify whether the process documentation is scientific, accurate, inappropriate feedback and correction in a timely manner, and continue to summarize.
Strengthen the monitoring of the printing process
To strengthen the monitoring of the printing process is to improve the execution of the process plan, so that the established process plan can be implemented.
1. A sound management system and serious process discipline must have corresponding assessment methods and rewards and penalties. Each product must have a corresponding process tracking card and quality tracking card. Each process and machine platform must strictly comply with the proofs and process requirements. Standard construction, and standardize daily operations, such as plate making exposure, developing test every day, printing iron machine Taiwan to do a good job, "Siqin, Sanping, two small" (diligent ink fountain, diligently wash the blanket, look at the layout surface moisture, Qin inspection print , Drum level, ink roller level, water roller level, plate surface water, small contact surface pressure).
2. Establish a learning-oriented enterprise and constantly improve the overall quality of employees. Enterprises must establish an effective learning system, regularly organize various forms of education and training, encourage employees to learn, and strive to create an atmosphere suitable for employees to learn and communicate. Training and motivation are linked; at the same time, we must also pay attention to fostering the teamwork spirit and rigorous work style of employees.
3. Strengthen the process control and quality management at the production site Do a good job of “three checksâ€, especially the tracking and monitoring of key products and key processes, and check whether the process data and quality indicators meet the standards at any time. This is not appropriate for process documents and production processes. Where to respond and correct in a timely manner.
4. Continual improvement of process level The appropriateness and optimization of the process are relative. With the change of production conditions and technological level of the enterprise, appropriate processes may become unsuitable. Therefore, it is necessary to continuously improve and perfect the existing process. It is necessary to actively promote or further promote activities such as ISO9000 quality system certification and TQM to improve the efficiency and effectiveness of the continuous improvement process, so that the technological level of the enterprise will spiral upward and the quality of products will continue to increase, which will also increase the competitiveness of the market.
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