The highest demand for the flexibility of surface

2022-07-25
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Higher demand for the flexibility of the overall automation of post press processing

as the printing process turns to industrialization, the post press processing industry is also developing continuously. However, even a few years ago, the development of post press technology was very slow, but today the situation has changed greatly. The reason for this is that the printing capacity of traditional offset printing, whether it is higher speed single sheet and web printing, or digital printing that serves on-demand printing or web printing, is also improving. Is it possible to see that the post press process cannot match the development of these printing technologies, or to spend the time saved in the printing process on post press processing

post press processing has always been regarded as the least important link in the printing industry chain, but each printed matter will eventually be more or less post press processed. The increasingly tight delivery time, the declining printing price and the demand for paper saving all make it necessary to introduce modern production technology into post press processing. To some extent, the form of post press processing should be adapted to the printing production mode adopted. For example, the post press processing system is rarely used in the sheet fed press, but more used in the web press. Therefore, the post press processing equipment must keep pace with the development of the printing press

the continuous rise of printing demand means that post press processing must provide a higher level of automation and more stable production, so as to achieve the consistency with the improvement of upstream printing speed and printing performance. In addition, the printing demand for shorter editions and the increasing number of orders each day need to greatly shorten the preparation time of post press processing equipment. In addition, the improvement of automation and the shortening of preparation time make the post press processing equipment more flexible, and the modular design also makes the post press processing equipment have the opportunity to be integrated into the printing system

the profound changes in the global printing industry inevitably affect the post press processing system. The rapid development of digital media, such as Internet, has made the global printing capacity stagnate, or even shrink. This makes the printing trend towards short edition, personalization, small batch, and even one print volume. The rapid development of digital printing has generated a large demand for on-line and near line post press processing

in this case, both post press processing equipment manufacturers and post press processing enterprises need to adjust according to the changes of market demand, and the improvement of post press processing automation and process optimization have also brought great development potential to these enterprises. At drupa2012, this change was more obvious

automatic cutting system

reliability, accuracy and programmed preset - these are the most important requirements of modern cutting systems. At present, most cutting systems use cutting knives rather than other cutting tools such as lasers

generally speaking, automatic cutting and paper breaking processes can greatly improve production efficiency and reduce labor costs. The programmed cutting automation system can minimize the preparation time of the cutting system. Peripheral equipment, such as paper pile elevator, automatic paper breaking system, automatic loader and automatic paper edge removal system, also play a very important role in improving cutting efficiency

cutting automation is generally ignored, but it can minimize the physical labor of employees through optimization. For Baumann maschinenbau, they installed many small air nozzles on the cutting machine to form an air cushion to help the paper move on the cutting machine. Compared with the old equipment, they no longer use the traditional ball bearings, and add more air nozzles per unit area, which means that employees will save more effort in the process of operation

however, not all companies are suitable for using fully automatic cutting systems. In many cases, the automatic cutting system combined with the traditional paper breaking system is enough. When the cutting machine automatically cuts the paper, the operator can complete the paper breaking work of the next group of paper to be cut. Of course, the automatic paper breaking machine can effectively reduce the physical burden of the operator. What kind of automation level an enterprise should adopt depends on the size of the order and the amount of paper to be cut in each group. It is not allowed to blindly believe that the higher the automation level of the equipment, the better

optimization of folding process

besides the cutting system, folding is also a frequently used post press processing process. Before folding planning, you must be familiar with the way to make up the large version of folding. It is very important to grasp the whole printing process and select the correct way of making up the large version for improving the production efficiency of folding and optimizing the whole printing production process including folding

in drupa2012, Heidelberg exhibited Starr th 82 folding machine. This folding device adopts PFX paper table paper feeder and pneumatic double book paste flow conversion form, which can increase the productivity of folding by 50%. If we use the brand-new way of making up the large version, Starr th 82 folding machine can also achieve a 12% increase in productivity in the whole production process of live parts

compared with the traditional folding equipment, the new folding machine can save 90% of the folding preparation time. However, although the new folding machine can reduce the cost of the process and improve efficiency, folding equipment has also become very expensive. Therefore, before realizing folding automation, enterprises need to consider whether this expenditure is really worth it. The purpose of automation improvement is not to improve the folding speed, but to reduce the folding preparation time. Another purpose of automation is to make the operation of the folding machine easier, so that folding experts can have more time to complete other work

highly automated matching and binding linkage line

the matching and binding linkage line can realize page matching and binding, and finally produce a complete book through the cutting of the three side book cutter. The traditional distribution linkage lines usually form a long queue. If higher performance equipment is required, the roller based system is undoubtedly a good choice

in order to reduce the preparation time of the configuration linkage line, generally speaking, the operator needs to evaluate what kind of equipment can meet the needs of consumers, so as to select equipment with different automation levels according to this demand. At present, the highest performance allocation linkage line comes from the equipment produced by ferrag company. Its ferrag uni drum 350 roller linkage line can provide up to 40000 pages per hour, and is installed with 2, 6 or 9 page allocation tables

wireless binding at that time

wireless binding is the most common binding method at present, and is often used in the binding of paperback books, periodicals, books, product catalogs and other products. Although the products bound by wireless binding are not as strong as those bound by sewing, this binding method is simpler and cheaper, which is why books and periodicals often use wireless binding

cold distribution glues, hot-melt adhesives, and pur adhesives are frequently used in wireless binding processing equipment. The drying speed of cold melt adhesive is slow, but it can provide more open performance and longer service life. But to increase the reliability of wireless binding, PUR adhesive is undoubtedly the first choice. Pur hot melt adhesive can provide ball screw with high adhesion performance without self-locking, and has good heat resistance and cold resistance. The use of high active pur hot melt adhesive can improve the binding speed of books and periodicals. It also has good adhesion to different quantitative printing paper, high gloss offset paper, glazing paper and gold and silver card paper, and can also meet the binding requirements of wired books and periodicals. At present, the fourth generation pur hot melt adhesive is very mature with shorter curing time and thinner adhesive layer than before, but it has the same strength and can be stored for a longer time, especially for products processed with wiring. Dual cure polyurethane hotmelts are another new type of adhesive. Under the action of ultraviolet light, the hot-melt adhesive melts into liquid to form a linear bonding chain. This kind of binder is very suitable for binding, and can meet the binding of rounding the spine

the ideal wireless binding equipment can provide a wide range of production, short preparation time, and can be integrated into the corresponding workflow to facilitate the preset of order parameters and the storage of relevant data. At the same time, it can also provide a higher production speed. The equipment shall have good adaptability and be compatible with different grades of paper, as well as the use of cold melt adhesive, cold gel and pur adhesive

the integration of digital printing and post press processing

automation, and economic and efficiency oriented products require standardized operations in all departments. JDF is an end-to-end digital process standard that has been used in the industry. However, JDF has not been formally established in the post press processing process

a complete digital workflow needs to connect pre press, printing and post press through a management process. With a unified standard, the connection between digital printing or offset printing equipment and post press processing system is much easier. However, in the real business operation, it is unrealistic for Postpress manufacturers to obtain real JDF data from customers (prepress image and text processing, advertising agents, and printing plants). Therefore, in this link, the degree of integration is bound to be very low. The deeper reason is that using JDF means using advanced post press equipment, but the service life of post press equipment is very long. In order to enable all equipment modules in the production process to communicate with each other, it means that a batch of equipment needs to be upgraded. If the device cannot read the JDF file or cannot obtain the correct information due to different versions, it will be difficult to execute the workflow. When post press enterprises introduce JDF, they also need to analyze the existing processes and change the process flow. Once the enterprise really adopts JDF, including force measurement accuracy, the whole process of pre press, printing and post press services can be easily established in an enterprise organization

this provides more options for integrating existing systems. Many manufacturers have developed network interfaces in the form of desktop control, and can also connect old systems

the networked Office of the enterprise simplifies the work and saves the downtime. Post press operation is faster, more efficient and error free. At the same time, the reduction of workload in data recording simplifies work cost accounting and equipment work planning, and further improves equipment evaluation. Mr. mabilong, CEO of martini, stressed that the scalable system gives us the greatest flexibility and makes great contributions to value-added and differentiated products. In drupa2012, Martini launched sigma book binding production line. This system adopts the full-automatic production mode, connects the digital printing equipment with the post press processing equipment, and can realize the online production process from web paper to books. The entire production line adopts connex workflow monitoring using JDF or JMF data. Colbus also launched a new book production line with the same principle -- bookjet in drupa2012

ICH Zahn, a logistics expert of Heidelberger Druckmaschinen AG, believes that it is extremely important for the network logistics department to understand and analyze the Department composition, market structure, technology and process flow of each user. This is to find out all the weaknesses

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