Eight-color rotary offset printing is one of the main hotspots for the introduction of equipment in the printing field in recent years. This upsurge stems from the increasing competition in China's printing market and the growing maturity and refinement of the printed product consumer market. Web offset printing, especially commercial web offset printing, is expensive, and commercial prints with higher added value often use low-quantity roll paper.
Due to the particularity of the roll paper, it is difficult to quantify the roll paper with the flat paper management method. However, if the management of the web cannot keep up, even if the business volume is sufficient, the profitability of the rotary offset printing equipment is difficult to increase. Therefore, it is inevitable to explore the way to save the rotary offset paper.
There are three characteristics of rotary offset printing: high printing speed, many additional functions, and high operating costs. Its high printing speed is manifested in the maximum speed of 20,000 offset double-sided four-color / two-color / monochromatic double-sided offset printing for general books and periodicals, and the commercial and semi-commercial eight-color offset offset printing speeds of up to 35,000 ~ 50,000 or more. . Therefore, if the operator's technology is not very mature, or the response to equipment failure, the treatment is not timely, or the problems that may lead to the scrapping of a large number of prints cannot be found during the commissioning phase, the paper waste caused by commercial rotary offset printing will be very alarming.
Commercial and semi-commercial rotary offset presses have many additional functions, including drying, cooling, glazing, etc., to meet the requirements of commercial printing speed, mass, multi-batch, multi-level, personalized, high-end, color, etc. It is often necessary, but correspondingly, the paper path has been lengthened, and the consumption of paper for threading and debugging has been further increased.
High operating costs. Commercial rotary offset printing has relatively high performance requirements on machine parts, raw and auxiliary materials, and even lubricants. In addition, if additional functions are enabled together, the operating cost is very high. Therefore, the requirements for various aspects of management are also relatively high. Otherwise, even if the processed printed products are high value-added products, these attractive profits will be swallowed up by the consumption of commercial aristocratic offset printing operations.
After understanding the above-mentioned characteristics of rotary offset printing, scientific management should be carried out in order to achieve the purpose of saving paper. Two points should be checked in management. One is the warehousing clearance, and the other is the paper clearance. Whether entering the warehouse or printing on the machine, make a roll-by-roll count of the paper used on the machine according to the type and batch of prints to ensure that there are no missing or re-recording, accurate records, no fraud, paper warehouse management personnel and workshop Machines should regularly reconcile and supervise each other.
Each roll of the manufacturer's roll paper is marked with a weight on the outer packaging, but the weight of each roll is not exactly the same. It must be counted roll by roll before entering the warehouse and on the machine to ensure the accuracy of the amount of paper issued and used. Even if the roll paper is directly stacked in the workshop, the paper warehouse management personnel must register when the paper enters the field, and check with the paper management personnel in the workshop to sign each other on the other party's account. After the recipient has checked and registered in accordance with the regulations, the outer packaging of the paper roll shall be marked with the unique identification volume number prepared by the paper library management personnel according to the labeling standard, so that the next process can fill in the number when filling in other items.
The machine is continuously produced. After each printed product, the paper on the machine is rarely used up, and the remaining paper is unloaded and weighed before loading, which is both troublesome and not feasible. In the production process, a table is used for monitoring and continuous improvement of paper usage, that is, a paper input-output balance table. According to the situation, the situation in the paper input-output balance table should be summarized and analyzed on a monthly (quarterly / annual) basis, so as to find prone problems, find the causes, and take corresponding corrective and preventive measures.
For commercial and semi-commercial 8-color rotary offset printing paper roads are generally long, you can make a special paper roll holder for threading, and use the core paper to thread the paper. Specific method: put the paper holder between the secondary tension and the second printing unit, pass through each printing unit and the post-press function parts, until the triangle plate at the folding part passes out, and then pass out at the secondary tension roller The paper rolls of the upper part of the paper are connected. This method can be used for paper-feeding operations such as loading paper and receiving paper after breaking. Through the actual measurement on the Harris-Heidelberg V30 semi-commercial 8-color rotary offset printing, it can save 30 meters of paper at a time.
Corten Steel Metal Garden Screens
Our designs and screens can have a variety of applications across your exterior landscape and outside living spaces,
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The corten steel screen panel, perfect for garden and park . Different sizes and model can be made according to different demand
Normal size 900*2*1800mm,color will be rusty red.
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| Name |
Corten Steel Metal Garden Screens |
| Material | Corten steel |
| Size | 900*1800mm |
| Steel thickness | 2mm |
| Packing | Pallet |
Packing
Packing will by pallet
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