Printing Machinery Selection Guide: How to buy and sell printing machinery
Abstract: China's printing machinery industry started late, until the 1970s, China has been mainly lead printing technology, the real modern printing machinery manufacturing industry started at the beginning of the reform and opening up, belonging to a new industry in the country. But since the reform and opening up, the rapid development of the printing industry has pulled the demand for printing machinery, China's printing machinery industry to develop rapidly. Next, buy a small part of the network to provide you with a detailed introduction to how to buy and sell printing machinery. Printing Machinery Selection Guide how to buy and sell printing machinery before you buy equipment, you must be fully prepared to make careful decisions. Specific preparations are the following aspects. These
Abstract: China's printing machinery industry started late, until the 1970s, China has been mainly lead printing technology, the real modern printing machinery manufacturing industry started at the beginning of the reform and opening up, belonging to a new industry in the country. But since the reform and opening up, the rapid development of the printing industry has pulled the demand for printing machinery, China's printing machinery industry to develop rapidly. Next, buy.com editor to give you details on how to buy and sell printing machinery.
Printing Machinery Selection Guide How to buy and sell printing machinery
Before selecting and purchasing equipment, you must be fully prepared and make careful decisions. Specific preparations are the following aspects. These tasks are better if they can be done frequently or regularly, rather than the urgent need to buy equipment only temporarily.
Printing Market Survey
Before buying printing machinery must consider the changes in the market and the development of demand now and in the future. Do serious research on the market situation, not only should there be domestic and foreign and the region's basic development trend of research and layout, but also should have the market capacity, especially the capacity of the market accounted for by the enterprise research and study.
Market research mainly includes:
①The development and changes of the printing market;
②The development trend and changes of printed materials;
③Trends and changes in electronic and print media;
④the development trend and changes of printing equipment;
⑤ Study the geographical characteristics and market segmentation of our company.
Analysis of the strategic positioning and strengths and weaknesses of the company
There are very important differences between printing companies with different strategic positioning. Book printing, for example, is within the product range of the publisher (society) to meet their needs, especially to meet their production capacity and time requirements. In order to make up for the unevenly busy font, making full use of the idle time equipment capacity, usually booklet printing enterprises also need to undertake some external tasks. Newspaper printing its timeliness is very important. For packaging printing and commercial printing, it depends mainly on the market, as there is no publisher restrictions, usually can be more optimally adapted to market demand digital printing in China, thus reducing costs. However, the availability of a stable source of work becomes the main issue.
Due to the diversity of product varieties, specifications and the special requirements of certain products, different types of printing machinery are often required. In order to reduce the types and specifications of printing machinery and improve its utilization rate, an enterprise should study to determine a product or several products and their specifications range and the grade of that type of print. That is, to determine the strategic positioning of the enterprise.
Selection of printing method
Here we introduce the characteristics of common printing methods for reference when choosing.
At present, the airbrush, widely used traditional water offset printing.
(1) the main advantages of offset printing: the process, equipment, supporting raw and auxiliary materials have been fully mature. Good printing quality and low cost. In a variety of printing methods, offset printing is the most ideal method for halftone color image reproduction, rich tone, clear levels, clear dots, color coordination, realistic and natural. In the production of printing plates, especially CTP plate making technology wine packaging, offset printing plate making technology is the most mature, offset printing plate making cycle is short, efficient and low cost.
(2) the main disadvantages of offset printing: the process is complex, must deal with offset presses, printing plates, paper, ink, water and ink balance and printing environment. Second, offset printing ink layer is not as thick as gravure and screen printing. Again, offset printing on plastic film printing limitations (now can be printed on plastic sheet).
A comprehensive look at the layout design, offset printing has far more advantages than disadvantages, is the most widely used in a variety of printing methods, the dominant printing method.
(1) The main advantages of gravure printing: full ink color with three-dimensional sense, stable printing quality, long life of the printing plate. Suitable for high-volume printing. Gravure printing equipment is simpler than offset printing machines. Can print paper-based and very thin plastic film substrates. Airbrush
(2) the main disadvantages of gravure printing: complex plate making process, supporting plate making equipment more image processing, high prices. Second, gravure printing with benzene containing ink pollution of the environment, harmful to humans, the printing workshop must be installed ventilation equipment.
Due to the progress of technology, gravure printing is also constantly improving. Laser engraving gravure plate and gravure plate computer direct plate (CTP) application and gravure with water-based ink gradually promote die-cutting stamping creasing, so that the gravure printing process of the two major problems gradually solved. Gravure important issues to be resolved, whether it will reverse the downward trend of gravure printing process, pending the test of practice.
At present, the domestic packaging printing, in order to adapt to the development of small quantities of multiple varieties of inkjet, many printers are considering or have used a combination of sheetfed gravure press and offset printing machine process, which is a noteworthy issue.
At present, flexo plates are made of photosensitive resin and rubber, and their hardness and thickness should be compatible with the substrate material and printing color.
(1) The main advantages of flexographic printing:
(1) Wide range of applications and substrates.
②Water-based inks are commonly used. Non-toxic and non-polluting, especially suitable for packaging printing.
③ equipment structure is simple Kodak, easy to operate, easy to form a production line. At present, the vast majority of flexographic printing presses, with such as hot stamping, varnishing, cutting, slitting, die-cutting, creasing, punching, windowing and other processing line, or with other printing methods such as gravure, screen printing, digital printing, etc. to form a production line.
④Lower printing cost. With the local production of flexographic printing equipment and its plates and raw and auxiliary materials in China to collect paper, its cost will gradually reduce.
(2) The main problems of flexographic printing:
① Flexo printing plates and raw and auxiliary materials in China localized production is a long way to go.
② Process standardization issues. More variables affecting flexographic printing, standardization and data is more difficult to achieve.
③ careful selection of equipment and prints: a device is not a panacea. Can not be offset, gravure products to print, should be based on the characteristics of flexographic printing to improve product design.
4、Screen (silk screen) printing
Screen printing can obtain a very thick ink film (usually 20 to 100μm, while offset printing is only 0.5 to 2μm). Because the ink film is thick, so the wine packaging, screen printing machine to be equipped with drying devices.
Screen printing is commonly used in the printing of textile materials, toys, electrical equipment shells, dashboards, signs, printed circuit boards, large-format advertising and posters, packaging prints, curved objects and some crafts.
(1) The main advantages of screen printing:
① Wide range of applications and substrate materials.
②The ink layer is thick.
③Can be combined with electrolytic process, hot stamping process, burning process, plastic molding process, etc. to produce different types of artwork.
(2) The main problems of screen printing:
①It is difficult to print halftone prints that require high overprint accuracy.
②Low speed of equipment and low printing efficiency.
It is mainly used for personalized and on-demand printing.
(1) The main advantages of digital printing:
① can meet a wide variety of personalized and on-demand printing requirements, which can range from one sheet (copy) printing to thousands of sheets (copies) printing;
② can achieve variable printing in the printing process where each piece of information is different;
③ in the case of a smaller number of printing, the printing time is short regional coverage and the printing price is lower than traditional printing;
④ the current printing quality can meet the general requirements of the public.
(2) The main problems of digital printing:
① does not adapt to a large number of printing;
② can not meet the requirements of fine quality;
③ equipment and equipment prices are high.
(3) The classification of digital printing.
① invariant graphic printing: mainly traditional printing plates in the mechanism of the plate, that is, pre-press, printing integration. Characterized by each printing plate is done, the graphic information that is recorded, can not be erased, so cut, printed with the same graphics for each sheet, can not achieve variable printing. However, because all the prints are made with the same plate, the printing quality is stable. Variable graphics printing machine, due to plate making, printing on the same machine, so the high price of equipment wine packaging, and plate making can not be printed, printing efficiency is low. Suitable for small quantities and fast printing. Water and ink balance
② variable graphics printing: there is an intermediate imaging carrier variable graphics printing, in which the imaging carrier (plate) can be repeated imaging, graphics can not be recorded but can be erased, each printing needs to be redone "plate" once. Even if the printed image of the same film, but also to print a "plate" to do once. Therefore, the decisive factor affecting the quality of printing and its stability is the quality of imaging. At the same time, the accuracy and consistency of the ink (toner) transfer also has an important impact on the quality of printing.
Variable graphics printing without intermediate imaging carriers, where the imaging material is controlled by a computer, directly to the substrate (paper).
Variable graphics printing is suitable for frequently changing graphics printing Adobe, such as commercial bills, bills, statements, lottery tickets, direct mail printed materials, phone bills, etc.
③Invariable and variable graphics printing: The graphics of the intermediate imaging carrier can be recorded or erased as needed. When the same graphic print is required, the graphic of the "printing plate" can be recorded. When other graphics are required, the "plate" can be erased and a new "plate" made on the original cylinder. It is possible to achieve continuous printing with the same or different graphics according to the need.
Each type of printing method has its own characteristics. So overprinting, combining different types of printing methods to complement each other's strengths and weaknesses, emerged as a combination printing method.
(1) Combination printing method.
① traditional printing methods composed of a combination of printing: that is, offset, gravure, letterpress, flexographic printing, screen printing, etc. of different combinations;
② Combined printing composed of digital printing: combinations of different digital printing methods;
③ Combination printing composed of traditional printing and digital printing.
(2) The main problems of combination printing currently exist:
① substrate and ink printing suitability. Different printing methods have different printing suitability requirements for substrates, combined printing requires substrates for different printing methods can be adapted. Different printing methods have different inks, different ink overlays are compatible to test selected in advance.
② combination of printing in a variety of printing methods of different printing speeds, in the entire printing system can only be low not high. This affects the printing efficiency of the equipment.
③ standardization issues. Different printing methods have different printing process standards unemployment, different printing equipment has different design standards, the application of combination printing brings process standards and equipment standards.
Printing machine purchase should deal with a variety of relationships
1、The relationship between mainframes and small and medium-sized machines
Specialized production enterprises with few varieties and large batches usually purchase large equipment. Multi-species small batch production enterprises, usually purchase small and medium-sized equipment, the use of multiple small and medium-sized equipment can use small and medium-sized equipment specifications and configurations of different food packaging, to better meet the needs of market changes and multi-species small batch production. The use of large-scale equipment, although high efficiency, low cost, but there are also risks, mainly three, it is difficult to adapt to product changes, there may be the phenomenon of large horse-drawn cart; system reliability problems Lekai two rubber, once the machine problems may lead to serious consequences; one-time investment problems.
2、Sheetfed and web presses
Which type of printing press is chosen depends mainly on the number of printed items to be printed. Generally speaking, sheetfed presses are characterized by large flexibility in printing width but low efficiency, and are suitable for a large variety of printed items and relatively small printing volume. For example, sheetfed offset presses are more suitable for a printing volume of about 2,000-20,000 sheets. Web offset presses are characterized by poor printing width flexibility printing market, but high efficiency, suitable for a relatively large printing volume of occasions. For example, web offset presses are more suitable for a printing volume of about 10,000-50,000 sheets. Web publishing
3、The relationship between digital printing and traditional printing
(1) Different scope of application. Digital printing is suitable for small quantity, on-demand printing (such as a small amount of personal needs printing, meeting minutes, briefings, etc.) and more variable printing of commercial bills, statements, lottery tickets, bills and documents for banking and insurance industries. Traditional printing is suitable for a larger number of printed items.
(2) Different costs. The cost of digital printing has nothing to do with the number of prints or can ignore its influence, while the cost of traditional printing is highly related to the number of prints. Therefore, the cost of digital printing is low when the printing quantity is small; when the printing quantity is large, the cost of traditional printing is low.
(3) Different printing quality. High-quality fine printing originals, but also need to use traditional printing to print.
(4) Different printing cycle. When the number of printing is small, digital printing has the advantage of high efficiency and short cycle time. When there is a certain amount of printing (large and larger quantities), traditional printing has the advantage.
(5) Digital printing presses are less efficient and more expensive. Digital printing is actually an integrated pre-press and printing press, that is, a machine with both a plate making device and a printing device. Plate making and printing alternately, printing CTF, plate making device in an idle state, plate making process, the press stops working. This determines that the efficiency of a digital press is never as high as that of a single plate-making device and a single press, and leads to high manufacturing costs for digital presses.
4、The relationship between high, medium and low grade equipment
Too much low-grade equipment, less investment in the development of the shadow, but can not print high-grade printing, but also affect the development of enterprises and reputation. High-grade equipment is too much, not only more investment, production costs will also increase. Properly handle the relationship between high, medium and low-grade equipment configuration, is one of the keys to improve business efficiency. Here should emphasize the relationship between imported equipment and domestic equipment. If domestic equipment can not meet the quality requirements of high-grade fine print variable data printing, or timing (such as the time out of the newspaper) requirements, no doubt should be imported high-grade advanced equipment, but should consider the financing of enterprises, the corresponding amount of high-grade fine print, operators and management to adapt, depreciation costs, imported supporting printing materials and spare parts and maintenance costs and other affordability. In short, the input-output ratio should be more strictly reviewed. Those who are just for the "face", "work" the need to import the phenomenon of the machine, should think deeply. Airbrush
5、The issue of technological sophistication
The principle of dealing with this problem first consider the positioning of their own business. High-grade equipment technologically advanced of course good Aicolor, but there must be matched products, operators, management level and economic strength, otherwise it is impossible to give full play to the effectiveness of high-grade equipment, but also impossible to have high efficiency. Especially now the rapid development of technology, printing equipment update period is greatly shortened, if the quality of operators and management can not keep up with the font, and there is no adequate source of print live, it is likely that the machine has not yet played a role, and then to update or be eliminated. The most typical is pre-press equipment, in the past, a number of electrical machines have not yet played a role in the desktop system to replace the current CTP equipment typesetting, a significant part of not fully play a role, and is faced with the need to update the situation. Similarly, we imported high-grade printing equipment, there is a considerable part because there is no high-grade fine print or because of the quality of the operator and other issues and long-term printing of low-grade printing. In the need to print high-grade products, these devices and due to the use of wear and tear or technological advances in the printing process, facing a situation of renewal. These situations fully illustrate that in the treatment of advanced technology, the spirit of pragmatism, should be based on the actual situation of enterprises to choose advanced practical technology.
6、New and old equipment matching and personnel issues
In addition to dealing with the various relationships mentioned above, you should also consider the systemic and matching Manroland of new and original equipment within the enterprise, whether it can optimize the production system, and whether it can meet the requirements of the printing process, especially for the quality, cost, and production cycle of printed products. In the purchase of special equipment (such as large format and flip equipment) to repeatedly study the market demand and study the original production equipment and the new equipment matching. If you need to buy a new series of supporting equipment because of the purchase of new equipment, you need to re-examine the necessity and feasibility of purchasing such equipment.
In order to give full play to the effectiveness of new equipment, the quality of operators and enterprise management may put forward new requirements packaging and printing, in the purchase of new equipment need to consider whether the existing operators to adapt, whether the need for training; efficient equipment to bring layoffs and unemployment issues how to deal with; enterprise management whether the need to improve, how to improve the problem.