Section III Advanced Corrugated Packaging Technology Equipment
First, update the significance of technical equipment
The advanced corrugated packaging production technology and equipment in the world today are developing rapidly, and their main features are the pursuit of high efficiency, low consumption, multi-functionality and high grade of products. Corrugated equipment manufacturers, such as LANGSTON, USA MITSUBISHI Japan, BHS Germany, AGNATl, SIMON, MARTIN and so on. Corrugated board production line equipment is the most important equipment for all technical equipments of corrugated packaging product manufacturing plants. Many corrugated packaging equipment manufacturers in China can produce automatic production lines for heavy-duty corrugated board with widths of 1800mm, 2000mm, 2200mm and speeds of 150~200m/min and equipped with microcomputer control. Some high-performance high-grade printing slot machines and molds Cutting machines, veneer machines have also been accepted by the city. A simple comparison of the input of different grades of corrugated board machines and their relationship with efficiency and efficiency (5-8-9-10)
two. Development trend of modern corrugated packaging technology equipment
1. The operating efficiency of the corrugated board machine is more than 300m/min above 200m/min. It is not uncommon in the foreign trade. The latest third-generation corrugated board automatic production line equipment has reached the speed of 375m per minute, Japan Mitsubishi's new 60G single-faced corrugating machine has been put into commercial production. The maximum operating speed of the model is 460m/min.
2. The function of a single-sided machine Corrugated board production line can be combined with the required corrugation model according to the design requirements of different packaging products, which can meet the processing needs of all different specifications and different types of corrugated board.
3. Cutter tooth design and drum processing technology The corrugated profile has a very important direct relationship with the quality performance of the corrugated board, the paper consumption, and the machine's operating capability. Secondly, the progress of corrugating roller processing and manufacturing technology is reflected in various aspects such as material use, size, and surface treatment. The diameter of the roller is expanded from light 250mm and medium 280mm to heavy 305mm and latest 475mm; roller surface machining technology Mitsubishi uses high frequency quenching technology, quenching depth 7mm, the surface hardness to Hs75 ± 5, then Hard chromium plated with a thickness of 0.1 mm; Langston's quench hardening pull makes it roll. The surface hardness of the cylinder reaches Rockwell 54~58 degrees. US Kopas uses a laser hardened and then chrome plated process. Its hard chrome plating can reach 0.15mm.
4. Non-guided technology for single-sided machines Currently, the single-sided non-guided technology has been available in many ways. Langston and Mitsubishi's single-sided machines use the method of thermal vacuum adsorption. Agenati and Copas of the United States use the air-cushion method, and Japan's Rocky Wheel Co., Ltd. uses the vacuum suction method. Hood way. German company BHS's EWR-VT vacuum manifold adsorption system with no guide single-side machine.
5. The beltless single-sided machine without pressure roller has many features that other general models do not have:
1. This model was the first to use fiber-woven belts to replace the traditional single-sided machine pressure rollers that have been used for a long time.
2. The operation control of 60G single-sided machine is accomplished through a processing command device that can be connected with the production center computer.
3. The corrugating roller mechanism of the 60G machine is different from the traditional structure.
4. The operating noise of the 60G single-sided machine was only 84dB at 200m/min, and 95dB when the speed rose to 400m/min.
6. Improvement of double-sided dryer function There are two ways to improve the new dryer heating device:
One is a tiltable variable-temperature heating plate operating system.
The other is an air-cushion heating plate heat conduction control system.
7. Operational Control Automation The computer system equipped with a corrugated board production line is a major feature of the modern new corrugated packaging technology and equipment. The ∑50 centralized control system developed by Mitsubishi, the German AHS automatic stacker of BHS Company utilizes microcomputer processing, and the automatic control of corrugated cardboard lines of Kopas of the United States has some unique features.
(8) Hydraulic slitting technology for corrugated board
The cutting principle of hydro-jet cut corrugated paperboard is that a high-pressure hydraulic force is pumped through a nozzle of a water jet parallel-connected cylinder device at a speed of 100m/s through a pump with a pressure of about 280kg per square centimeter. The cut line of the corrugated board is punctured and cut open.
8. The new cold-formed corrugating process was recently co-developed by the American Institute of Paper Chemistry and the Copasvas equipment manufacturing company.
The main features of the cold-formed corrugating operation are:
The pretreatment of the corrugated base paper, that is, the application of a small amount of a chemical to cool the adhesive used for corrugating, is essentially still a thermochemically converted starch binder, developed by the Institute of Paper Chemistry.
9. Corrugated Packaging Flexographic Printing Technology The application of foreign flexographic printing technology in the field of corrugated packaging and printing has developed rapidly. Not only has it become increasingly widespread in its scope of use, but the printing effect has also become increasingly sophisticated. The basic concept of FLEXOGRAMM is, in short, a soft letterpress printing process, in which a plate with a raised image is applied to the plate cylinder, and the metal ink roller engraved with a reticulated ink hole is applied. Ink, the other squeegee roller controls the amount of ink to be transferred, and the liquid or monthly 3-shaped flexible printing ink is transferred to various sheets of the printing material by direct rotary printing.
10. Application of Computer Technology
The use of computer technology in modern corrugated packaging manufacturing industry is based on the introduction of the use of corrugated board machines and box-making equipment, which has led to the introduction of automation of operation control. Subsequently, the entire production line and even the entire plant sector were formed on the basis of stand-alone use. Computer-aided processing of machine operations and production management are systematically used. Nowadays, some of the more advanced computerized technology applications of corrugated packaging products manufacturers.