DRUPA2000 demonstrates the new technology and development prospects of the future print media, and also puts forward new requirements for the post-press process reform. In order to completely change the backwardness after printing, promote post-printing process reform and technological innovation, and quickly improve the level of post-press processing, the Postpress Technology Innovation Center, China Baoxie Paper Products Information Center, Zhengdatian New Materials Research Institute, and Henan The “Printing Technology Innovation Market Seminar†co-held by the Provincial Printing Binding Technology Plant was held in Suichuan County, Henan Province from September 1st to 5th, 2000.
From printing, packaging production and processing, equipment and equipment manufacturing, scientific research, teaching, information and other industries, and printing in Beijing, Tianjin, Liaoning, Shanxi, Hebei, Shandong, Jiangsu, Henan, Hubei, Hunan, Sichuan, Yunnan, Guangxi, and Guangdong. Representatives of the market for the promotion and application of post-technological innovations participated in the seminar. The meeting analyzed several features of the unbalanced development of the current printing industry technology:
First, the structure of the printing industry has been dominated by newspapers and other media, mainly commercial printing. Commercial advertising, forms, packaging, etc. have gradually become the main body of printing. The number of policy-oriented newspapers and newspapers has reduced the volume of such publications. All levels of fixed-point printing and printing plants (which are also China's printing pillar companies) are struggling. The rapid development of emerging printing companies with commercial printing as their main body, with the advantages of accurate positioning, advanced equipment, reliable quality, high efficiency, and excellent service, has emerged as an important pillar of the printing industry and has occupied a new printing market.
Second, due to various reasons such as science and technology, economic information exchange, and prediction of future development trends, the overall layout of the printing industry is that technological innovation in the coastal open areas is clearly superior to inland areas, especially in the west. The trend of “living in and out of the country†and “Northern Living and South Indian†have continued unabated. A small part of the region continued to develop, and most of the inland provinces had significant contrasts in the potential market for technological innovation.
Third, the State Economic and Trade Commission and the Press and Publications Agency are extremely concerned about the technical progress of the printing industry in China. In accordance with the directives of the 15th CPC National Congress on “strengthening management, adjusting structure, and improving quality†of the press and publishing industry, the Chinese printing industry shall be guided by the market-oriented and relying on scientific and technological progress to innovate continuously and lead the Chinese ideology of printing and equipment equipment industry in 2010. Before reaching the "prepress digital, networking; printing multi-color, high efficiency; diversified after printing, automation; equipment, high-quality, serialized" new goals. In the process of technological advancement, there is a significant gap in the speed of prepress, printing and postpress of the printing industry.
With the rapid development of the computer industry and the popularization of Internet technology in the world, the printing and publishing industry has been affected by digitalization and networking as a traditional information industry. When China's electronic laser photocopying and discharging system reached the international advanced level, it started to adopt the Client/Server system structure before printing and relied on 74 volumes of the “China Encyclopedia†to establish and develop a terminology database with a library capacity of 1 million terms. And the standard GMML Chinese editor. Editing work is automated, and communication and data exchange can be conducted with relevant organizations at home and abroad. Super-XH100 satellite news picture transmission processing system has been completed by Xi'an Jiaotong University and Xinhua News Agency. It implements the functions of background communication and foreground processing in a non-preemptive multitasking environment, making the system intelligent, subaddress multi-rate receiving, JPEG compression and decompression, and communication encryption and decryption. Through the combination of hardware and software technology and multi-level, multi-mode program development means, the prepress information transmission has reached the level of automation and intelligence.
The rapid development of multi-color offset printing in various printing companies has already taken shape in China's printing industry. Fast printing, personalized printing, and on-demand printing have become new trends in the printing industry under the development of market economy. More than 20 digital presses such as Indigo, Agfa, Xeikon and Xerox have been applied in China, further increasing the technological content of printing in China.
Compared with the rapid development of prepress and printing, labor-intensive printing is even more backward. Extensive type of postpress processing is still based on manual labor or semi-mechanized operation. Obviously affect the quality of high-speed, fine print, restricting the overall rapid development of the printing industry. The meeting discussed the basic situation and major issues after printing:
First, post-press processing in the printing of books and magazines is mainly focused on the binding process; in terms of packaging and printing performance for the film, coating, die-cutting, indentation, hot stamping and other aluminum technology. More often than not, post-press finishing and book printing are compatible and compatible.
Second, the binding process due to the process design and implementation, production operations and coordination, equipment, technical performance and maintenance, material quality determination and selection and other factors, not only the existence of low production efficiency, but also obvious quality problems. According to the statistics of relevant departments, the reason for the unsatisfactory quality of books and periodicals printing is that more than 60% of them are due to binding.
Third, film, glazing as the conventional process of finishing the surface after printing, there is a common production process in the production process of pollution, prone to fire, the traditional after the coating is wet and easy to blistering and filming , warping and other issues. Solvent-based, UV-type coating is prone to problems such as color printing or disappearance of metallic color. At the same time, the film coating and polishing products processed by this traditional production process all have odor migration and affect the later issues of the quality of the packaged goods.
Fourth, the hot stamping of electro-aluminum is the development of gilding finishing to multi-color, multi-layout, new material direction. At present, there are problems such as color fading, color fading, and color loss after laminating and electro-aluminization. There are also new problems that can easily come off after stamping anodized aluminum on super bright card paper.
V. At present, the main reasons for the existence of various problems after printing can be summarized as follows: 1. Lagging behind the process of 1 binding is still mainly based on the manual work of iron wire. The unavoidable arbitrariness of the manual operation of the complex procedures from the inside leaflet to the hot back book is a gene that is difficult to guarantee the development and quality of productivity.
The coating equipment introduced in the 280s was a rubber compound machine. The process principle is gluing - drying - compounding. In order to adapt to the production operation of the model, the composite adhesive must undergo a solid state change (liquid coating) and a liquid reduction (solid state bonding). It is precisely for the operability of the film production that it is necessary to invest a large amount (≥80%) of organic solvent first, and then give high-power new thermal energy (6~12KW) to volatilize the organic solvent when the phase changes. This kind of process that has been speared and shielded has caused a great deal of pollution in the process of production, which is detrimental to the physical and mental health of the operators, and destroys the cleanliness of the surrounding environment; it is extremely prone to sudden fires and the safe production is not reliably guaranteed; The post-film products are prone to large-scale blistering and filming quality accidents; after the film is coated, the products are prone to odor migration caused by the volatilization of residual organic solvents, and the underlying problem of odor deterioration of the in-package products. 3 coating process both coating - calendering process, but also UV coating process. The drying technology of the liquid coating coating to the solid state conversion makes it impossible to dry the interior of the coating when the surface is dry, and the internal drying of the coating further affects the color of the printing ink layer and changes the problem. 2, equipment defects 1 manual binding on the spine brushing adhesive, to the front and back of the album when the misalignment transfer plastic edge borrowed pallets, but also glued off the spine brush adhesive, changing the original coating formation.
2 The hot back setting temperature control during manual binding rarely has automatic adjustment function. When the temperature is low, the drying is poor and the book spine is deformed; when the temperature is high, the drying is too fast, the local shrinks abruptly or the coating film surface is emptied or melted.
3 Binding device milling cutter structure defects, easy to cause the inner text page milling slot is too shallow, glue hot melt adhesive is not easy to perfuse.
4 The reverse coating structure of the coating equipment is an independent power drive. The difference with the composite host, resulting in more or less glue error, affecting the stability of adhesion.
5 In the drying equipment of the film coating equipment, in the same dry tunnel, there are actually three different temperature regions and three concentration regions opposite to the effective evaporation of the organic solvent, resulting in waste of resources and failing to achieve the desired adhesion effect.
6 The coating of the film coating equipment and the film discharge mechanism are designed together so that the area with the highest volatile concentration of organic solvent is in the static field of film discharge. The static sparks and the highest concentration of extremely flammable and explosive volatilization gases are the root cause of the sudden fire caused by the wet glue compounding process.
(7) The thermal guarantee of the thermocompression bonding mechanism of the laminating equipment is generally precarious due to the fact that the diameter of the heating roller is too small, the wall of the pipe is thin, the wall thickness is uneven, and the thermal conductivity of the single-cavity air medium is structurally designed and the production and processing defects are unreliable. .
8 The coating thickness of coating equipment lacks a reliable control device and cannot meet the film coating requirements.
9 The drying equipment of coating equipment lacks deep drying function, so that the drying only shows the degree of surface layer.
10 Hot Stamping Anodized aluminum equipment is just a hot press main structure for layout replacement. There is no pretreatment device for processing the surface of the substrate. Therefore, when processing a new type of substrate, quality cannot be guaranteed only by hot pressing. 3, old materials 1 manual binding adhesive is all hydration type, concentration control is not standard. Not only cause instability of the adhesion, shrinkage after drying, but also makes the wire nail easy to rust.
2 The main component of glue hot melt adhesive is still EVA. Paraffin wax regulates its fluidity, tackifying resins reflect its viscosity, and talcum powder increases its hardness. The constituent materials in the composition are contradictory groups. The infiltration of the book block depends on the fluidity at high temperatures. This guarantee of fluidity is just an inducing factor for accelerating the aging of the hot melt adhesive, reducing the adhesive force, and significantly worsening the low temperature brittleness.
3 Solvent-based adhesives for lamination are customary materials. The fierce competition in the processing of low-cost coated films has tended to use solvent-based adhesives that appear to be low in price and high in actual cost, and forced adhesive producers to use alternative combinations to ensure their survival at low prices. Ingredients materials. This in turn increases the pollution of the production process and the subsequent problem of product quality.
(4) The composition of adhesive-bonded hot-melt adhesives, film-covered adhesives, glazing coatings and other materials is basically based on foreign patents of earlier patents, and uses materials and technologies that have been eliminated in foreign advanced countries. 4. The composition of the post-imprint basic team is the member of prepress and post-press screening. Compared with prepress and printing production processes, the cultural level is relatively low and the age structure is too large. Assault production and processing, and many rural idle labor temporarily supplemented to the manual operation of the production line. Post-press staff rarely receive systematic training and most lack basic printing knowledge. Basically, post-printing is in a physically redundant state of labor.
The production personnel of some technical posts, who have mastered the mechanical equipment, lack the common sense of machinery and the necessary maintenance, maintenance, and adjustment of basic skills, and cannot exert the normal efficiency of the machinery. It is even more evident in high-tech imported automation production lines.
There are many producers who do not understand the characteristics of the substrate. It is not understood that the substrates are subject to different changes due to climate effects. No trace of substrate deterioration was observed. Can not inject this kind of characteristic, objective conditions of change into their own operation intentions, adjust the production conditions accordingly, in order to achieve the best processing results.
The meeting communicated and exchanged the main results of the current post-press technology innovation and feedback from the application market:
First, the use of PN junction type semiconductor temperature devices and digital LCD display, the development of automatic temperature control system has been used in the vast area of ​​book binding hot back machine, glue machine glue tank, glue book repair and other production lines. The control of thermal power has improved the state of mechanical technology and material use performance.
2. The domestically-made disc type and bar type perfect binding machines have been mass-produced in Shanghai, Jiangsu, Hebei, Liaoning, Henan, Heilongjiang and other places, accelerating the improvement of the process of bookbinding in China to the wireless binding process. The milling and backing slotting knife is improved from V type to U type, which enlarges the cutting surface of the spine milling slot, which is beneficial to the infusion of hot melt adhesive.
Third, to adapt to China's paper substrate and high-volume, short-cycle printing, binding production characteristics of low-temperature high-strength new book binding hot melt adhesive TNS-TYHMA series in the disc, strip and automatic glue production line after use, has passed the quality The standardization of technical supervision determines that one after another will invest in new areas and expand the scope of application, which will play an effective role in the “year of binding quality for 2000â€.
4. "Hua Cui" brand solvent-free melting hot melt adhesive pre-coated film and dry composite technology
From printing, packaging production and processing, equipment and equipment manufacturing, scientific research, teaching, information and other industries, and printing in Beijing, Tianjin, Liaoning, Shanxi, Hebei, Shandong, Jiangsu, Henan, Hubei, Hunan, Sichuan, Yunnan, Guangxi, and Guangdong. Representatives of the market for the promotion and application of post-technological innovations participated in the seminar. The meeting analyzed several features of the unbalanced development of the current printing industry technology:
First, the structure of the printing industry has been dominated by newspapers and other media, mainly commercial printing. Commercial advertising, forms, packaging, etc. have gradually become the main body of printing. The number of policy-oriented newspapers and newspapers has reduced the volume of such publications. All levels of fixed-point printing and printing plants (which are also China's printing pillar companies) are struggling. The rapid development of emerging printing companies with commercial printing as their main body, with the advantages of accurate positioning, advanced equipment, reliable quality, high efficiency, and excellent service, has emerged as an important pillar of the printing industry and has occupied a new printing market.
Second, due to various reasons such as science and technology, economic information exchange, and prediction of future development trends, the overall layout of the printing industry is that technological innovation in the coastal open areas is clearly superior to inland areas, especially in the west. The trend of “living in and out of the country†and “Northern Living and South Indian†have continued unabated. A small part of the region continued to develop, and most of the inland provinces had significant contrasts in the potential market for technological innovation.
Third, the State Economic and Trade Commission and the Press and Publications Agency are extremely concerned about the technical progress of the printing industry in China. In accordance with the directives of the 15th CPC National Congress on “strengthening management, adjusting structure, and improving quality†of the press and publishing industry, the Chinese printing industry shall be guided by the market-oriented and relying on scientific and technological progress to innovate continuously and lead the Chinese ideology of printing and equipment equipment industry in 2010. Before reaching the "prepress digital, networking; printing multi-color, high efficiency; diversified after printing, automation; equipment, high-quality, serialized" new goals. In the process of technological advancement, there is a significant gap in the speed of prepress, printing and postpress of the printing industry.
With the rapid development of the computer industry and the popularization of Internet technology in the world, the printing and publishing industry has been affected by digitalization and networking as a traditional information industry. When China's electronic laser photocopying and discharging system reached the international advanced level, it started to adopt the Client/Server system structure before printing and relied on 74 volumes of the “China Encyclopedia†to establish and develop a terminology database with a library capacity of 1 million terms. And the standard GMML Chinese editor. Editing work is automated, and communication and data exchange can be conducted with relevant organizations at home and abroad. Super-XH100 satellite news picture transmission processing system has been completed by Xi'an Jiaotong University and Xinhua News Agency. It implements the functions of background communication and foreground processing in a non-preemptive multitasking environment, making the system intelligent, subaddress multi-rate receiving, JPEG compression and decompression, and communication encryption and decryption. Through the combination of hardware and software technology and multi-level, multi-mode program development means, the prepress information transmission has reached the level of automation and intelligence.
The rapid development of multi-color offset printing in various printing companies has already taken shape in China's printing industry. Fast printing, personalized printing, and on-demand printing have become new trends in the printing industry under the development of market economy. More than 20 digital presses such as Indigo, Agfa, Xeikon and Xerox have been applied in China, further increasing the technological content of printing in China.
Compared with the rapid development of prepress and printing, labor-intensive printing is even more backward. Extensive type of postpress processing is still based on manual labor or semi-mechanized operation. Obviously affect the quality of high-speed, fine print, restricting the overall rapid development of the printing industry. The meeting discussed the basic situation and major issues after printing:
First, post-press processing in the printing of books and magazines is mainly focused on the binding process; in terms of packaging and printing performance for the film, coating, die-cutting, indentation, hot stamping and other aluminum technology. More often than not, post-press finishing and book printing are compatible and compatible.
Second, the binding process due to the process design and implementation, production operations and coordination, equipment, technical performance and maintenance, material quality determination and selection and other factors, not only the existence of low production efficiency, but also obvious quality problems. According to the statistics of relevant departments, the reason for the unsatisfactory quality of books and periodicals printing is that more than 60% of them are due to binding.
Third, film, glazing as the conventional process of finishing the surface after printing, there is a common production process in the production process of pollution, prone to fire, the traditional after the coating is wet and easy to blistering and filming , warping and other issues. Solvent-based, UV-type coating is prone to problems such as color printing or disappearance of metallic color. At the same time, the film coating and polishing products processed by this traditional production process all have odor migration and affect the later issues of the quality of the packaged goods.
Fourth, the hot stamping of electro-aluminum is the development of gilding finishing to multi-color, multi-layout, new material direction. At present, there are problems such as color fading, color fading, and color loss after laminating and electro-aluminization. There are also new problems that can easily come off after stamping anodized aluminum on super bright card paper.
V. At present, the main reasons for the existence of various problems after printing can be summarized as follows: 1. Lagging behind the process of 1 binding is still mainly based on the manual work of iron wire. The unavoidable arbitrariness of the manual operation of the complex procedures from the inside leaflet to the hot back book is a gene that is difficult to guarantee the development and quality of productivity.
The coating equipment introduced in the 280s was a rubber compound machine. The process principle is gluing - drying - compounding. In order to adapt to the production operation of the model, the composite adhesive must undergo a solid state change (liquid coating) and a liquid reduction (solid state bonding). It is precisely for the operability of the film production that it is necessary to invest a large amount (≥80%) of organic solvent first, and then give high-power new thermal energy (6~12KW) to volatilize the organic solvent when the phase changes. This kind of process that has been speared and shielded has caused a great deal of pollution in the process of production, which is detrimental to the physical and mental health of the operators, and destroys the cleanliness of the surrounding environment; it is extremely prone to sudden fires and the safe production is not reliably guaranteed; The post-film products are prone to large-scale blistering and filming quality accidents; after the film is coated, the products are prone to odor migration caused by the volatilization of residual organic solvents, and the underlying problem of odor deterioration of the in-package products. 3 coating process both coating - calendering process, but also UV coating process. The drying technology of the liquid coating coating to the solid state conversion makes it impossible to dry the interior of the coating when the surface is dry, and the internal drying of the coating further affects the color of the printing ink layer and changes the problem. 2, equipment defects 1 manual binding on the spine brushing adhesive, to the front and back of the album when the misalignment transfer plastic edge borrowed pallets, but also glued off the spine brush adhesive, changing the original coating formation.
2 The hot back setting temperature control during manual binding rarely has automatic adjustment function. When the temperature is low, the drying is poor and the book spine is deformed; when the temperature is high, the drying is too fast, the local shrinks abruptly or the coating film surface is emptied or melted.
3 Binding device milling cutter structure defects, easy to cause the inner text page milling slot is too shallow, glue hot melt adhesive is not easy to perfuse.
4 The reverse coating structure of the coating equipment is an independent power drive. The difference with the composite host, resulting in more or less glue error, affecting the stability of adhesion.
5 In the drying equipment of the film coating equipment, in the same dry tunnel, there are actually three different temperature regions and three concentration regions opposite to the effective evaporation of the organic solvent, resulting in waste of resources and failing to achieve the desired adhesion effect.
6 The coating of the film coating equipment and the film discharge mechanism are designed together so that the area with the highest volatile concentration of organic solvent is in the static field of film discharge. The static sparks and the highest concentration of extremely flammable and explosive volatilization gases are the root cause of the sudden fire caused by the wet glue compounding process.
(7) The thermal guarantee of the thermocompression bonding mechanism of the laminating equipment is generally precarious due to the fact that the diameter of the heating roller is too small, the wall of the pipe is thin, the wall thickness is uneven, and the thermal conductivity of the single-cavity air medium is structurally designed and the production and processing defects are unreliable. .
8 The coating thickness of coating equipment lacks a reliable control device and cannot meet the film coating requirements.
9 The drying equipment of coating equipment lacks deep drying function, so that the drying only shows the degree of surface layer.
10 Hot Stamping Anodized aluminum equipment is just a hot press main structure for layout replacement. There is no pretreatment device for processing the surface of the substrate. Therefore, when processing a new type of substrate, quality cannot be guaranteed only by hot pressing. 3, old materials 1 manual binding adhesive is all hydration type, concentration control is not standard. Not only cause instability of the adhesion, shrinkage after drying, but also makes the wire nail easy to rust.
2 The main component of glue hot melt adhesive is still EVA. Paraffin wax regulates its fluidity, tackifying resins reflect its viscosity, and talcum powder increases its hardness. The constituent materials in the composition are contradictory groups. The infiltration of the book block depends on the fluidity at high temperatures. This guarantee of fluidity is just an inducing factor for accelerating the aging of the hot melt adhesive, reducing the adhesive force, and significantly worsening the low temperature brittleness.
3 Solvent-based adhesives for lamination are customary materials. The fierce competition in the processing of low-cost coated films has tended to use solvent-based adhesives that appear to be low in price and high in actual cost, and forced adhesive producers to use alternative combinations to ensure their survival at low prices. Ingredients materials. This in turn increases the pollution of the production process and the subsequent problem of product quality.
(4) The composition of adhesive-bonded hot-melt adhesives, film-covered adhesives, glazing coatings and other materials is basically based on foreign patents of earlier patents, and uses materials and technologies that have been eliminated in foreign advanced countries. 4. The composition of the post-imprint basic team is the member of prepress and post-press screening. Compared with prepress and printing production processes, the cultural level is relatively low and the age structure is too large. Assault production and processing, and many rural idle labor temporarily supplemented to the manual operation of the production line. Post-press staff rarely receive systematic training and most lack basic printing knowledge. Basically, post-printing is in a physically redundant state of labor.
The production personnel of some technical posts, who have mastered the mechanical equipment, lack the common sense of machinery and the necessary maintenance, maintenance, and adjustment of basic skills, and cannot exert the normal efficiency of the machinery. It is even more evident in high-tech imported automation production lines.
There are many producers who do not understand the characteristics of the substrate. It is not understood that the substrates are subject to different changes due to climate effects. No trace of substrate deterioration was observed. Can not inject this kind of characteristic, objective conditions of change into their own operation intentions, adjust the production conditions accordingly, in order to achieve the best processing results.
The meeting communicated and exchanged the main results of the current post-press technology innovation and feedback from the application market:
First, the use of PN junction type semiconductor temperature devices and digital LCD display, the development of automatic temperature control system has been used in the vast area of ​​book binding hot back machine, glue machine glue tank, glue book repair and other production lines. The control of thermal power has improved the state of mechanical technology and material use performance.
2. The domestically-made disc type and bar type perfect binding machines have been mass-produced in Shanghai, Jiangsu, Hebei, Liaoning, Henan, Heilongjiang and other places, accelerating the improvement of the process of bookbinding in China to the wireless binding process. The milling and backing slotting knife is improved from V type to U type, which enlarges the cutting surface of the spine milling slot, which is beneficial to the infusion of hot melt adhesive.
Third, to adapt to China's paper substrate and high-volume, short-cycle printing, binding production characteristics of low-temperature high-strength new book binding hot melt adhesive TNS-TYHMA series in the disc, strip and automatic glue production line after use, has passed the quality The standardization of technical supervision determines that one after another will invest in new areas and expand the scope of application, which will play an effective role in the “year of binding quality for 2000â€.
4. "Hua Cui" brand solvent-free melting hot melt adhesive pre-coated film and dry composite technology
NINGBO HOZ TRADING CO.,LTD , https://www.howzkitchenware.com