The hottest tomorrow of China's packaging and prin

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"Tomorrow" of China's packaging and printing industry (Part 1)

traditional printing and CTP

at present, there are nearly 21000 packaging and printing enterprises in China. The total output value of the industry in 2002 was about 75billion yuan. The vast majority of these enterprises are small and medium-sized enterprises, which are mainly traditional printing. Due to the technology, equipment, capital, customer base and other reasons of these enterprises, they temporarily rely on traditional printing. Because in the traditional printing and printing, the printing control strip is used, and there is a printing ladder. You can judge the printing situation and the photosensitive performance of the plate from the number of printing grids of the ladder, the percentage and resolution of the equipment point where the small Jinan experimental machine is used for intensity experiments, until you control the printing quality. Compared with these enterprises, they have more mature technology and experience, so traditional printing is still the basis for these enterprises to promote technology

ctp technology has been applied in recent years. In April, 1994, Creole's first CTP (green laser) equipment was put into use. By the drupa printing Expo in 1995, Creole had launched a thermal CTP plate making machine; At the same time, Ke has been widely used in many fields. Companies such as Da have successively developed thermal CTP plates. In a few years, a physicist at Cornell University, CTP technology has been widely used and developed in the United States, Europe, Japan and other countries and regions. After the reform and opening up, China has purchased more than 60 CTP equipment (excluding Hong Kong, Macao and Taiwan) due to its thirst for new technology. For example, printing enterprises such as Jielong, Qiuyu and Zhonghua in Shanghai and coal aviation color printing in Xi'an have introduced CTP, which is in good use and has achieved good economic benefits. The reason why CTP technology develops so rapidly is mainly because CTP technology has the following advantages:

printing enterprises that save the use of imagesetters use CT to control the punch to rise P at a uniform speed, and then no longer use film (including output film and intermediate film), which is a relatively large expenditure. At the same time, CTP also simplifies the process and reduces the possibility of errors

save time. Since the glue sign is no longer used, there is no need to make up and save time

high efficiency after CTP plate making, the preparation time is shorter and the working capacity is increased. Therefore, for those printing enterprises that have been able to output full-length films, it is relatively easy to adopt CTP, and obtain high returns while reducing labor intensity

high quality. The quality of prints has been greatly improved by using computer to make plates directly. Because many instabilities of traditional printing have disappeared, there is no need to worry about inaccurate overprint, film scratch, dust on the rubber surface, etc

in addition, CTP thermal version provides the point of abnormal tax profit and exposure tolerance, which greatly avoids the underexposure or overexposure of printing plates

although CTP technology has adverse factors such as large investment, plate materials, technology and management for many packaging and printing enterprises, under the condition of market economy, the ultimate goal of enterprises is to make profits. With more and more low-cost CTP systems put on the market, the application of CTP (including digital printing) will have a great development in 2003 or the next few years

In recent years, with the development of market economy, especially the rapid rise and development of food, beverage, cigarette, medicine, health care products, cosmetics, daily chemical industry, small household appliances, hardware, clothing, toys and other industries, as well as the expansion of foreign trade after China's accession to the WTO, people's living standards are improving day by day, Higher and higher requirements are put forward for packaging and printing products, and the grade of packaging is also constantly upgrading. Therefore, in recent years, from packaging and printing materials to printing technology are constantly changing to meet people's physiological and psychological needs, such as the application of UV sanding ink, the application of gold and silver cardboard, laser anti-counterfeiting materials, etc. At the same time, in order to achieve the selection of packaging printing materials, we also apply the combination of various printing technologies, such as: glue, silk screen printing, concave, silk screen printing, flexible, silk, concave printing, glue, concave, flexible printing, plus equipped with bronzing, embossing, die cutting, gold printing, silver printing, pearlescent, fluorescent, field printing, matte printing, water-based glazing, UV glazing, anti-counterfeiting printing, anti metal etching printing and other printing technologies, In order to meet the needs of the rapid development of today's packaging and printing industry. In the comprehensive application of these packaging and printing technologies, one of the best applied units in China is probably Zhejiang Meinong Printing Co., Ltd. they have made good use of offset printing, gravure printing and silk screen printing on cigarette packets, which has brought the quality and grade of cigarette packaging to a new level. At the same time, they have also achieved good economic benefits. The output value in 2002 was significantly higher than that in 2001, reaching as much as 350million

improve quality, reduce costs, and increase benefits

with the development of China's market economy, the expansion of foreign trade, and the increasing improvement of people's living standards, higher and higher requirements are put forward for packaging and printing products, which not only requires the continuous improvement of printing quality, but also price has become the legal code of competition due to the fierce competition among China's packaging and printing enterprises; For example, the price of drugs has been continuously reduced under the state regulation, which is beneficial to the common people. In addition, this year, the state has expressly prohibited beer bottles from using strapping packaging, which has brought good news to the production of color box packaging enterprises, but there are also problems in the price. In this situation, which requires both good printing quality and continuous reduction in price, all packaging and printing enterprises will cross the sea -- each shows its magic power. However, no matter how powerful the magic power is, it is nothing more than strengthening management, adopting new technologies and processes, improving efficiency and reducing costs. One of the best ways for the color box industry is to use preprint

pre printing, as the name suggests, is to pre print the required patterns before making corrugated board. The method of using preprint to produce color corrugated boxes is to use a large gravure printing machine to print on the web paper. The printed web paper is used as the corrugated paper production line on the surface paper of the carton to make the corrugated box board, and then the die-cutting machine is used to cut it into boxes. Namely: gravure printing paper (WEB) - corrugated board production line - Computer longitudinal cutting - computer transverse cutting - die cutting

the traditional method of producing color corrugated boxes is: first, offset printing is used on the single sheet of paper on the carton, then the printed paper is bonded with the corrugated paper by the veneer machine, and then molded into various box shapes. Therefore, compared with the traditional production method of color cartons, preprint has the following advantages: (to be continued)

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