In addition to paper, composite materials are the most commonly used printed materials in industrial or cultural business design. They can be applied to the manufacture of various daily necessities or high-tech products. The added value is much higher than that of paper. It is the printing industry and the design industry. Pursue new options for innovation and competitiveness enhancement. However, there are many types of composite materials, and how to master the printing suitability and achieve the exquisite and beautiful effect has become the most desired answer in the industry. Therefore, on the afternoon of November 26th, at the Yanping Branch of the Promotion Center of the Chinese Culture University, hosted by the Industrial Bureau and the Technology Department of the Ministry of Economic Affairs, Taiwan Manroland Co., Ltd., New Micron Co., Ltd., China Printing Society, China Printing Technology Co-sponsored by the Society, sponsored by the Printing and Communication Xingcai Cultural and Educational Foundation, and the Printing Industry Technology Research Center, the "Perspective Composite Materials Printing Technology Seminar" was held, attracting more than 150 industry participants. The meeting was chaired by Professor Li Xingwei of the Chinese Printing Society. Chairman Lu of the Printing and Research Center and publisher Chen Zhengxiong of the printer magazine were invited to give a speech. During the meeting, General Manager Chen Liqiang of Taiwan Manroland Co., Ltd. was invited to analyze the "Development Trend of Composite Material Printing", Professor Xu Piming of the Plastic Precision Processing Center of the Far East Institute of Technology gave a lecture on "Composite Processing and Forming", and Manager Zhang Hongzhang of New Micron Co., Ltd. gave a lecture on "Composite Introduction of Material Printing Ink ", Wu Wenhe, the director of Shanshui Color Printing Co., Ltd. gave a lecture on" Composite Material Printing Practice ". Analyze one by one from the characteristics of composite materials, ink selection, and printing practices to solve the industry's myths about composite materials applications and printing practices, and then boldly pursue innovation in product design to welcome the era of high profits. The speakers explained the know-how of printing various composite materials through a variety of real products, which caused a lively discussion among the participants. The following is a summary of the content of the speakers of this seminar: Speaker of "Development Trends of Composite Materials Printing" Chen Liqiang, general manager of Taiwan Manroland, said that in the printing of composite materials, the printing of plastic materials is the mainstay. For example PVC, HDPE, PP, PET, ABS & PC. The printability, heat resistance, and thermal stretch of various materials are different. The requirements for post-processing environment are also different. These practical operational capabilities require industry research and development efforts to achieve. In addition, ultraviolet UV drying printing is also a rapidly developing market. For example, the United States grows by 10% each year, and Europe by 5 to 10% each year. Even Japan, which has a low economic cycle, has grown by 4%. There are also many companies that have put into production in Taiwan. In addition to ultraviolet drying, equipment suppliers also have different applications for infrared and electron beam drying. These drying methods are also helpful for the printing of composite materials. General Manager Chen also emphasized that in the electronics and IT industries, there is no shortage of industrial printed materials with multiple composite materials and multiple processes. For example, product casings, windows, key structures, and even production labels, batch numbers and other logo stickers, these are high-value-added printed products that are worth the industry's efforts to develop. Printers must enlarge their business scope. They should not only focus on lithographic printing or cultural paper printing. They must extensively use the comprehensive process capabilities of lithographic, screen resin, and gravure printing, and even add digital printing functions. To highlight the differences in products. The printed materials should also be developed towards high-cost plastic special paper or composite materials. More research and development should be done in this industry to pursue high value-added production capabilities, seek to avoid simple price-cutting competition, and develop a broader business survival opportunity . Dr. Xu Piming's lecture at the Far East Institute of Technology focused on "composite processing and molding", which is relatively unfamiliar to the general printing industry, to enable on-site printing practitioners to understand how plastic products are made to master the printing industry can cut into the part of production. Dr. Xu began to introduce the three major areas of plastic processing methods: extrusion molding, injection molding, and hot compression molding, and more closely introduced the indispensable daily life of pipes, plastic bags, vacuum molded products, and bottle blowing. Composite material production process. Composite materials are not only used in the manufacture of daily necessities, but also in the production of parts for high-tech products. Dr. Xu introduced the injection molding technology (IMD) and plastic injection molding technology that are of most interest to the printing industry. Professor Xu's explanation opened the eyes of those who were engaged in special printing industry, and also solved the industry's myths about plastic printing. The main function of injection molding is to squeeze the molten plastic into the mold cavity under high pressure. After the plastic cools, the mold is opened to take out the finished product. In order to improve the quality of products in the injection molding process, many new technology levels have been derived, such as gas-assisted injection, injection compression molding, rapid injection molding, co-injection molding, and Overmolding. At present, there are more than 20 mature technologies. Traditional plastic processing technology has gradually failed to meet the needs of the new era. The rise of light, thin and short consumer electronic information products and environmental awareness has made the proportion of advanced plastic processing technology gradually increase, which has affected the financial turmoil in Asia. According to the survey data, only the optoelectronics industry and greenist products continue to grow; advanced plastic processing technology is the most urgently needed technology in the industry. In the traditional plastic processing industry, In-mold-decoration (IMD) mode Interior injection, gas-assisted injection, injection compression molding, rapid injection molding, co-injection molding and Overmolding all have their technical levels and application fields, which will greatly improve product quality in the future. Among them, IMD injection processing technology can best show the appearance-oriented characteristics of 3C (Computer, Communication, and Consumer Electronics) industry. The advantages of In-mold decoration (IMD) injection molding are as follows: (1) Wear-resistant and scratch-resistant product appearance (2) Variety of color variations, can print more than four different colors (3) High color contrast, and plastic products can transmit light (4) High color density (5) Good EMI / RFI shielding Due to the advantages of IMD, it is suitable for plastic products of 3C and auto parts, especially the currently popular mobile phone shells and instrument panels inside automobiles. Advanced manufacturers in the world such as Bayer of Germany, DuPont of the United States, and Sumitomo of Japan are all developing this process. Due to the pursuit of speed and automation in production systems, today's plastic processing machines and molds have been developed towards the overall automation of electromechanical integration. That is to integrate the original processing methods, so that plastic products can meet the accuracy requirements and rapid automated mass production. Among them, the development of injection processing technology is the most advanced. It not only makes plastic products replace other materials, but also reduces the cost of automated production. The domestic 3C industry is booming, and the application of IMD injection processing has attracted widespread interest. At present, IMD processing is disadvantageous in production efficiency and automation due to its high production failure rate. The bad reason is that the ink printed on the film undergoes secondary processing (including HPF, Die-Cutting, Injection Molding) and the quality is unstable. The research found that the melting point of the ink is 135 ℃, and the physical properties of the dry ink are fragile. Therefore, during the processing of HPF and Die-Cutting, when the film is strongly bent, the ink at the bend breaks, causing light to pass through here. In addition, because the melting point of the ink is 135 ° C, and the processing temperature of the injected PC material is 290 to 300 ° C, when the ink meets the high-pressure and high-temperature PC material, the ink will dissolve and the ink will shift, thus making the printing look Blurred. To overcome the defects caused by injection, it is necessary to improve the mold design and injection processing technology. Zhang Hongzhang, manager of R & D Division of New Micron Co., Ltd., introduced the ink system of composite materials. Among them, solvent-based inks are the main ones. Manager Zhang said that the choice of ink must first be considered the adhesion of the ink, attached to the material, because the composite material must eventually be followed, if the adhesion of the ink is insufficient, when the layers are laminated Variations may occur, so its adhesion is more important. As for the choice of materials, in addition to experience or theory, it is usually necessary to try it out to be clear. As for the choice of printing method, you must first understand the characteristics of the layout, and their design concepts are different, for example: gravure and relief printing look similar, but the most basic ink consistency is very different: screen and lithography The inks are thicker, while the gravure inks are more watery. In addition, the nature of the content must also be considered. For example, assuming that the packaged item is part of food, it must be considered whether the ink will variate at high temperature and high pressure. Finally, we must also consider the final processing method. We must first look at the characteristics of the interlayer material before selecting it. If we need to store it for a long time, we must also consider the shelf life of its packaging to ensure the freshness of the contents. In addition, the requirements of resistance must pay special attention to the properties of optical rotation resistance, weather resistance, solvent resistance and high temperature resistance according to the nature of the content. The packaging materials used in the past are relatively simple. Nowadays, the packaging materials meet the needs of many markets, so many composite material bonding technologies have emerged at the historic moment, and the composite materials are combined into new materials based on their characteristics. Coupled with the maturity of today's printing technology and the requirements for color, the ink has also progressed, and the current trend will be toward the development of nano pigments. On the topic of "Composite Printing Practice", Wu Wen, the director of the landscape printing company, which is famous in composite printing, was invited to give a keynote speech. Director Wu introduced the composite materials commonly used by lithographic printers, including stickers, metal film-mounted cardboard, and plastics. Generally, the printing of composite materials can be divided into printing after compounding or compounding after printing. There are different processes according to different needs. The matters that should be paid attention to in the printing process of composite materials include: planning, design, plate making, materials, printing, processing, packaging and transportation. There are several key points in plate making, material inspection and printing that must be paid special attention to: 1. Plate making: (1) According to the work instructions, a positive or negative image is printed out on a single plate (generally the most positive image is printed on paper), but there are many changes in composite materials, and different materials have different outputs (dot shape, line number, angle, etc.). 2. Material inspection: The qualification of the material has a huge impact on the subsequent process, so it has to be noted that the benefit of preparing in advance is greater than the remedy afterwards. The inspection items are as follows: (1) If the size and specification are different from the work order, please contact and deal with relevant personnel immediately. 3. Printing: The quality of a printed piece is very important and must be taken seriously. There are several important points to pay special attention to in the printing of composite materials: (1) It is not easy to control the color consistency of the entire batch of prints (the size of the material can be placed on the printing guide to assist the color control). (2) It is required to remember the printing color sequence and ink brand used in each batch of printing, and leave a sample of each printing (multiple printing), such as four-color printing, four-color plus double white, etc. (3) The first article inspection, color matching, comparison of standard sample size, ink adhesion and abrasion test should be done during printing. (4) Standardized control of printing conditions: control of PH value, conductivity and impurities of water bath. Director Wu finally said that Taiwan ’s printing industry is a small business, and each process is mostly independent (division of labor). Cross-industry cooperation and integration (merger) will be the best weapon for future competition. At present, the biggest bottleneck of the cooperative relationship is that the two parties fail to open their hearts and do real exchanges. They often want to get everything from each other, but they want to keep one hand. I hope to take the opportunity of the seminar for everyone to share knowledge exchanges and jointly open up new business opportunities for Taiwan's printing industry. pull out sofa bed,Sofa Beds,single sofa bed,double sofa bed Guangzhou LoPhiDa Co.Ltd , https://www.gdwidinlsa.com
Taiwan is particularly interested in this technology due to the developed 3C industry; IMD injection processing steps are as follows: (1) Film multi-color printing (Printed Film)? Printing process is to print multi-color ink on 2D-film? (2) 3D High Pressure Forming (HPF). HPF uses high-pressure air to shape the above 2D-film into a mold 3D-film? (3) Die Cut to Trim Film, which is cut with stamping equipment Cut excess film material for 3D-film modeling? (4) After 3D-film modeling is manually placed in the mold, it is then processed for injection molding (Insert Molding).
(2) Due to the printing and stretching problems, sometimes the plate-making must be used as a subsidy method, the most commonly used is the trapping method (the local printing pattern is slightly retracted or enlarged.
(3) The printing color sequence must be clearly marked, especially for transparent materials (due to the printing of white ink).
(2) The material up to the factor (more than 40mN / m is qualified) inspection, there are two common methods of treatment that do not meet the standard: Corona (electric shock treatment) or Primer (coating a layer of media-chemical agent) to make the surface meet the printing requirements.
(3) Whether the cutting is neat and smooth, if it is bad, it will cause trouble during printing and unstable quality.
Perspective on composite material printing technology seminar triggered a warm response