It is generally believed that short-run printing should use small equipment, but this time I want to talk about the use of large-scale high-efficiency printing equipment for short-run printing.
Now the printing volume of printing jobs is shrinking each time, and the efficiency of printing equipment is getting higher and higher. The main performances are as follows: First, the printing speed of all printing equipment is constantly increasing. For example, the maximum printing speed of sheet-fed offset printing presses has been developed to 18,000 to 20,000 sheets per hour. Web offset presses and web gravure printing The printing speed of the machine has reached 15 meters per second, and even the speed of the digital printing machine is also rapidly increasing; secondly, the printing format of the printing equipment is continuously increasing, the printing format of the sheet-fed offset printing press has reached 1510mm × 2050mm, and the newspaper web The paper width of the offset printing machine has reached 3, the width of the commercial web offset printing machine has reached 2.25m, and the roll unrolling length is 1240mm; the paper width of the roll paper book gravure printing machine has reached 4.32m, even digital printing The printing format of the machine is also developed from A4 and A3 to A2 and A1. The format is getting wider and wider and developing rapidly.
Case analysis and inspiration
The growing size of printing equipment is due to the need for the development of large-format prints such as packaging, advertising, and posters, but more importantly, it is to increase productivity. Let's look at two examples of foreign printing factories.
The Prinovis printing plant in Liverpool, UK, opened in June 2006. All the printing equipment is three web gravure presses with a width of 4.32m and a width of 2.75m. At the end of 2007, all four equipments were put into production. The factory has 400 employees and an annual printing capacity of 160,000 tons of paper. It mainly prints magazines, newspaper inserts, advertising prints, direct mail and travel catalogs.
Espace MediaGroup newspaper printing plant in Bern, Switzerland, in order to expand the printing capacity of newspapers, adopts a large roll web offset press with 3 frames and 9 towers. This printing machine cylinder has 6 plates in the axial direction and 2 plates in the circumferential direction, which is very efficient. They believe that this type of newspaper printing machine "ideal printing job is to produce thousands of local newspapers. When the job structure is ideal, the cost-effectiveness of the 6-page wide and short version printing and large high-efficiency printing equipment printing machine is unparalleled." They summarized the advantages of this printing press as follows: "3 wide-width cylinder printing machines, we only need 3 towers to print 72-sided color, and to use double-width wide cylinder printing machines, 4 half towers ". With the same printing volume, the number of printing towers is reduced. Therefore, the small footprint can reduce the investment in the printing workshop; the number of paper tapes is reduced, the scrap rate is reduced; the number of printing towers is reduced, the preparation time is shortened, and the productivity is improved, while the operation and maintenance personnel can be reduced.
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