Current situation, development trend and technolog

The current situation, development trend and technological innovation of China's water-based ink industry (I)

Abstract: This paper introduces the structure, main components and environmental protection problems of water-based ink, analyzes the current situation, development trend and technological innovation of China's water-based ink industry, and summarizes the application prospect and market outlook of water-based ink in printing

(Abstract :This article Introduced the water-base printing ink structure, the essential component and the environmental protection question, and analyzed the water-base printing ink industry present situation, and the technological innovation in china , simultaneously it has made the outline to the market forecast.)

key words: water-based ink, current situation, trend, technological innovation, application, outlook

users can easily distinguish it. 0 Introduction

water-based ink is abbreviated as water-based ink. The main difference between water-based ink and oil-based ink is the difference in solvent. Water-based ink uses water (45%~50%) as solvent, with extremely low VOC content and little environmental pollution; Oil based inks use organic solvents (toluene, xylene, industrial alcohol, etc.) as solvents to reduce weight and improve collision safety. In the flexible packaging industry, because solvent based inks are mainly volatile and dry, the lower the boiling point of the solvent, the more volatile it is and release toxic gases to pollute the environment. There are also residual toxic substances on the surface after printing, while the solvents used in water-based inks are water and ethanol excluded from the VOC list, which can greatly reduce VOC emissions

the ink structure is mainly composed of inorganic (organic) toner, rosin (acrylic acid) resin acid, additives (defoamer, dispersant, leveling agent, stabilizer) and water. The structure is relatively simple, the investment equipment is small, and the profit margin is relatively high. Therefore, there are many domestic manufacturers at present, but the product quality is uneven. There are only 50 manufacturers producing carton ink in a certain scale all over the country. Carton ink types mainly include ordinary ink (rosin resin), high-grade ink (acrylic resin) and medium-grade ink (some rosin resin and some acrylic resin). Because the resins used in high-grade ink are all acrylic resins, high-grade ink has the fastest drying speed, the highest water resistance, the best wear resistance, the highest ink color stability, high brightness, strong coloring power, and does not corrode the plate, but its cost and technical content are high. Many ink factories take high-grade ink as the economic pillar

in recent years, China has also made some regulations on food packaging. The status of "green" printing is constantly improving in China. At present, the water-based ink in flexible packaging ranks first among other printing inks with 35% consumption

at the ink conference held in Hangzhou in April, 2005, many experts proposed to improve the environmental protection and hygiene of ink, and suggested to strengthen the control index of heavy metals in the ink industry standard. March, 2005 Tested parameters: change the standard test parameters of the experimental machine to experimental torque and corner. In July, the odor problem of potato chip plastic flexible packaging of a company in Lanzhou once again aroused people's attention to environmental friendly ink

with the improvement of people's awareness of environmental protection, the urgent need for "green" printing materials is growing. Therefore, how to reduce the environmental pollution of ink and how to improve technological innovation have become the most important development direction of ink industry, and finally make new contributions to the development of China's ink industry. Therefore, this article wants to give readers a current situation of ink industry and understand the application prospect of environmental protection ink

1 current situation of China's water-based ink industry

China's ink industrialization has developed rapidly. The output continues to grow, the variety of products continues to increase, the quality continues to improve, and the grade continues to improve; The proportion of medium and high-end products is constantly expanding, and the quality of some products has approached or reached the level of similar foreign products. According to the statistics of the National Bureau of statistics, China's ink output in 2005 was 302300 tons, an increase of 17.20% from 257900 tons in 2004; In 2005, the sales revenue of ink products in China was 11597.29 million yuan, an increase of 25.6% from 9236.59 million yuan last year. The data shows that the ink market in China is developing very rapidly

however, due to the continuous rise of raw material prices and energy costs, the profit margin of the ink industry continues to decline, and the domestic market competition is increasingly fierce. At the same time, the environmental protection of ink has also become a matter of concern

1.1 review of the development of water-based inks

as early as the 1960s, people began the research and application of water-based inks. Due to the requirements of environmental protection and the shortage of petroleum raw materials, some developed countries gradually restrict the use of petroleum products to manufacture printing inks. Therefore, people began to study non organic solvent based inks, which made great progress and development of water-based inks. At first, dextrin, shellac, casein, sodium lignate and other substances were mainly used as the connecting materials of water-based inks, and the prepared water-based inks were mainly used for the printing of some low-end products

in the late 1960s, with the development of material science, the synthesis technology of rosin and maleic acid modified resin succeeded, replacing casein, shellac and other materials, and became the main material of water-based ink, which could basically meet the printing needs at that time. However, these primary products still have some disadvantages, such as poor gloss, poor water resistance, poor adhesion, easy foaming, poor storage stability, etc. Later, the water-based inks produced at this stage were called the first generation products

in the 1970s, due to the oil crisis, the raw materials for printing ink were once again in great tension. At the same time, developed countries legislated to control air quality, restrict the emission of organic volatile compounds (VOC) into the atmosphere, and restrict the content of heavy metals and residual solvents in packaging and printing products with strict sanitary conditions such as food, beverages and drugs. Ink researchers in various countries continue to conduct in-depth research and produce solution styrene? Acrylic copolymer resin is the second generation of water-based ink. This product makes up for the poor water resistance and storage stability of the first generation of water-based inks, but it still lags behind solvent based inks in gloss and printability. Therefore, based on the second generation of water-based inks, the ink R & D personnel introduced acrylic monomers to polymerize with styrene, and developed a polymer lotion resin with core-shell structure and shape structure. This series of resins has greatly improved the gloss and dryness of ink, promoted the development of water-based ink, and continuously widened the competitive field of water-based ink with solvent based ink. Water based ink has entered a new development period

China's water-based ink was first introduced from Singapore, and the second generation of water-based ink was developed after years of use. The third generation of water-based inks are imported directly into China. The high-grade ink we use now can be said to be the fourth generation product. First, it was successfully developed and put into production by Tianjin ink factory, which is characterized by self-developed resin or direct use of imported resin for production. At present, China's water-based ink technology is much more mature than before. The four-color ink, dot, overprint and high-speed carton water-based ink produced now can basically meet the requirements of most carton factories. The fourth generation of water-based inks have low cost and good quality compared with imported inks, and are deeply trusted by customers

at the end of 2003, Wuhan Institute of modern industrial technology developed a series of water-based inks, which are non-toxic, non irritating odor, non corrosive, non flammable, non explosive, and safe to use. The new ink series can be widely used in the printing of gold and silver cardboard, coated paper, whiteboard, corrugated paper, self-adhesive paper, cartons, paper packaging bags, books and magazines, etc. At the beginning of 2004, Shanghai Meide Fine Chemical Co., Ltd. launched the latest all water-based low-temperature thermosetting ink. The formaldehyde content of this product is below 15ppm, which meets the environmental requirements of textile printing and dyeing in Japan and Germany. MD? 1002 all water-based low-temperature thermosetting ink has great hiding power, fine texture, can pass more than 250 meshes of silk, not blocked, easy to operate, and the ink color can be mixed at will. The ink has no smell and belongs to high-quality environmental protection products. In the past, thermosetting inks had to be baked at high temperature, which often caused fabric discoloration and deformation, and this all water-based low-temperature thermosetting ink completely avoided the above phenomenon. Generally, the heat treatment of the finished product can be the same as that of ordinary glue printing. It can be baked at 120 degrees for 1 ~ 2 minutes. The ink has excellent tensile properties for knitted fabrics. The fastness to washing and rubbing is above grade 4, and the guarantee period in a sealed and cool place can be up to 5 years. Its biggest advantage is to save electricity, which greatly reduces production costs. This product is widely used in all cotton, chemical fiber and other fabrics except waterproof nylon cloth

1.2 current situation of ink production enterprises

from the current situation of ink production enterprises in China, in recent years, Taiwan funded enterprises of ink with industrial developed countries have developed rapidly. The first is Hangzhou ink factory, and then ink factories in Shanghai, Tianjin, Taiyuan, Shunde, Shenzhen, Jinan and other places have also invested in Taiwan. At present, more than 40 joint ventures have introduced foreign advanced processes and equipment. Due to the good foundation of technical force, Its ink production accounts for more than half of the total national ink production

in addition, private ink enterprises also occupy a certain market. These enterprises are small in scale, but they have flexible mechanisms, low ink prices, flexible sales and strong adaptability. In China, there are more than 400 ink manufacturing enterprises in industries such as home appliances, mobile phones and new energy vehicles, with about 70:6 distributed in Beijing, Shanghai, Tianjin, Zhejiang, Jiangsu, Guangdong, Shandong and Hebei. But there is no? The output of individual industries can reach 10% of the total output of ink in China

domestic ink enterprises generally have many problems, such as small scale, lack of talents, insufficient funds, low R & D investment, weak technological innovation ability, and production technology lags behind the world level. At present, China has formed a number of backbone ink production enterprises represented by Shanghai Peony Ink Co., Ltd., Tianjin Toyo Ink Co., Ltd., Hangzhou HANGHUA Ink Co., Ltd. and Peking University Deli Technology Co., Ltd., which have made great contributions to the technological progress of China's ink industry

from the perspective of ink products, in order to meet the needs of the printing market, China relies on scientific and technological progress to continuously develop new products. The main products are sheet fed offset quick drying ink, web offset ink, gravure ink, flexographic ink, silk printing ink, iron printing ink, UV curing ink, water-based ink, anti-counterfeiting ink, etc. the above ink products are not only increasing in variety, reaching more than 50 kinds, but also higher in quality, A few enterprises have obtained the franchise of American pontone ink color standard. Tianjin Toyo Ink Co., Ltd., Shanghai DIC Ink Co., Ltd., Zhejiang New Oriental ink Group Co., Ltd., Yunnan Hongta Yuehai Ink Co., Ltd. and other enterprises have passed the ISO9000 series quality system certification. Generally speaking, most of the inks produced in China are medium and low-grade inks, and the supply exceeds the demand. Some high-end products and special products need to be imported. In 2001, the import of inks reached 24700 tons, with an amount of 1.15 billion yuan

from the perspective of management, the major domestic ink manufacturing enterprises have introduced foreign advanced technology and production equipment, such as bead mill, inclined three roll inkmill and filtration equipment produced by Buhler company in Switzerland