Analysis of major gaps between domestic food packaging machinery and international
- Clicks:669 Release time:2011/3/28
The main gap between domestic food packaging machinery and the international:
1. Low production efficiency, high energy consumption, poor stability and reliability, backward product shape, rough appearance, low life of basic parts and components, and poor quality of domestic pneumatic parts and electrical components.
2. Control technology is applied less. Such as remote control technology, stepper motor technology, information processing technology. Experts pointed out that the level of packaging machinery in Germany, Italy, the United States and Japan is in the forefront of the world. Among them, the technology of forming, filling and sealing three kinds of mechanical equipment in the United States is very fast. For example, the liquid filling machine produced by American Liquid Filling Equipment Company (EJF) can realize gravity filling, pressure filling and positive pressure moving pump filling. That is to say, any viscosity liquid can be realized by changing the filling method by microcomputer control.
German packaging machinery is a world in terms of metering, manufacturing and technical performance. The beer and beverage filling equipment produced in the country is fast in production, high in automation and reliable. Mainly reflected in: automation of the process, high production efficiency, meeting the short delivery time and reducing the cost of the process; the equipment has higher flexibility and flexibility. Mainly reflected in the flexibility of production, the flexibility of construction and the flexibility of supply to meet the needs of product replacement; the use of computer and simulation technology to provide complete sets of equipment, low failure rate, remote diagnostic services; less environmental pollution It mainly includes noise, dust and waste pollution.
40% of the packaging machinery produced in Italy is food packaging machinery, such as candy packaging machines, tea packaging machines, filling machines, etc. The product is characterized by exquisite appearance, excellent performance and low price. The great advantage of the Italian packaging machinery industry is that it can be designed and produced according to the requirements of users, and can ensure the design, production and testing are well completed, and supervision, inspection, assembly, adjustment and user demand analysis are realized.
Japan's food packaging machinery, although mainly small and medium-sized single machine, but the equipment is small in size, high precision, easy to install, easy to operate, and high degree of automation.
With the development of science and technology in the world, developed countries have integrated nuclear energy technology, microelectronics technology, laser technology, biotechnology and systems engineering into traditional mechanical manufacturing technology. New materials such as new alloy materials, polymer materials, composite materials and inorganic non-metallic materials have also been promoted and applied. The integration, intelligence, networking and flexibility of food packaging machinery will become the mainstream of future development. The future manufacturing industry will present the following characteristics:
■Production scale: small batch → small variety and large batch → multi-variety variable batch.
■Resource allocation: labor intensive → equipment intensive → information intensive → knowledge intensive.
■Production mode: manual → mechanized → single machine automation → rigid flow automatic line → flexible automatic line → intelligent automatic line.
â– Process method: Emphasis on processing before and after processing, attaching importance to process equipment, making manufacturing technology a complete set of technology integrating process methods, process equipment and process materials.
â– Process Control: Control of logistics, inspection, packaging, and storage processes as part of manufacturing technology.
■Establish a product recycling system: design → production preparation → processing and manufacturing → sales → maintenance → recycling, the whole process forms a virtuous circle.
Faced with the market demand and the gap between China's food packaging machinery, how to increase the pace of independent innovation, and strive to develop a batch of products with independent intellectual property rights and international advanced level in a short period of time, is in front of China's food packaging machinery enterprises Urgent task.
Innovation of food packaging machinery in China
1. Production efficiency and mechatronics. It is the key to realize the automation of packaging machinery and ensure the reliability and stability of equipment. The future machinery will develop in four directions. First, the functions are diversified and flexible. Those packaging machines with multiple switching functions can meet the needs of the market. Second, the structural design is standardized and modularized, making full use of the original organic type. The module design converts the model in a short time; the third is the control intelligence. At present, the food packaging machinery generally adopts the PLC power load controller. Although the PLC is very flexible, it still does not have the powerful functions possessed by the computer. The fourth is the high precision of the structure, the key to the performance of the equipment in structural design and structural control. Some of them are realized by motor, encoder, NC digital control and PLC power load control, and moderate extension of product functions, making food packaging machinery a high-tech product.
2. High utilization of resources. It is mainly to improve the comprehensive utilization rate of resources for equipment, to make the best use of it, to improve the extraction rate of active ingredients, and to reduce the loss of food nutrition.
3. Energy saving of equipment. Energy-saving technologies are widely used in equipment, and efforts are made to reduce production costs and improve economic efficiency.
4. Practical use of high technology. The use of microcomputer technology, vacuum technology, aseptic packaging technology, membrane separation technology, ultra-high pressure sterilization technology, etc., to improve the quality of food and storage after packaging.
In short, food packaging machinery should be developed in the direction of knowledge intensive, technology integration, and product intelligence. The packaging industry should focus on scientific research and develop the complete sets of equipment urgently needed in China's food industry as the focus of research, launch new varieties, and fill the gap.
New technology on food packaging machinery
1. Design standardization and modularization. Manufacturers in developed countries all over the world attach great importance to the versatility of packaging machinery components. Modular design means that in order to develop different products with multiple functions, it is not necessary to design a separate design for each product, but to design a number of modules, and then combine these modules in different ways to solve the product specifications. The contradiction between manufacturing cycle and cost.
2. Mechatronics. The realization of mechatronics in food packaging machinery is a technological innovation and inevitable trend emerging under the rapid development of contemporary science. By introducing mechatronics technology into food packaging machinery, intelligent packaging technology can be developed to enable food packaging to be fully automated in accordance with process requirements. At the same time, the monitoring and control of the production process, the diagnosis and elimination of the fault can be completed automatically. Thereby achieving high speed, high quality, low consumption and safe production. The application of mechatronics technology in the precise metering, high-speed filling and automatic control of aquatic products can simplify the structure of packaging machinery, optimize performance and improve product quality. Another example is the commonly used plastic bag sealing machine, the sealing quality is directly related to the material of the packaging material, sealing temperature and sealing speed. If these factors change, production process control will be more difficult. If the microcomputer control is used, the matching parameters of various packaging materials, sealing temperature and sealing speed are input into the microcomputer storage, and the necessary sensors are assembled to form an automatic tracking system, so that no matter how the process parameters change, Both can guarantee the effect of sealing quality.
3. Application of servo motor. Many companies in food packaging machinery use stepper motors instead of ordinary motors, which plays an important role in improving the performance of the equipment. The stepper motor is a discrete motion device that is essential to modern digital control technology and is widely used in digital control. However, the stepping motor has weak points such as low control precision, long starting time (starting time of the stepping motor is 200~400 milliseconds, the starting time of the servo motor is only a few milliseconds), and the overload capability is poor. Using a servo motor instead of a stepper motor can improve the control accuracy of the food packaging machine.
New food packaging technology
In recent years, many packaging technologies have been applied in food packaging, such as blister and body packaging technology, shrink and stretch packaging technology, vacuum and pneumatic packaging technology, mold and anti-corrosion packaging technology, aseptic packaging technology. There are also some new packaging technologies in the world that will be popularized and promoted in the future:
1. Microwave continuous sterilization technology. The microwave continuous sterilization technology is a sterilization method for heating food by using a high frequency of 2500 MHZ.
The polar molecules produced by microwaves in the living body produce a strong rotation effect in the microwave magnetic field, causing the vegetative cells to lose their activity or destroy the enzyme system of the microorganisms, causing the death of microorganisms. Microwave continuous sterilization technology has broad application prospects in solid food sterilization and preservation.
2. Ultra-high pressure sterilization technology. Also known as high hydrostatic pressure technology. This technique utilizes a liquid as a pressure transmitting medium to cause the food to be in a high pressure state, resulting in denaturation of the microbial protein, loss of activity of the enzyme, and death of the bacteria by the Zui. The University of Georgia used this method to sterilize orange juice and stored it at 4 ° C for 90 days without any deterioration. This sterilization method can keep the color, aroma and taste of the food unchanged, and the protein and vitamins are not reduced.
3. Electrostatic sterilization technology. The food is not directly placed in the electric field, but the food is treated by the particle air and ozone formed by the electric field discharge. The mechanism of ozone sterilization is that the strong oxidizing electrode potential formed by 03/H2O has a destructive effect on the cell membrane of the microorganism, phospholipids and proteins in the cell wall. When 03 enters the cell, it will destroy the enzyme and genetic material, thus achieving the effect of killing microorganisms. The ozone is mixed with water to form ozone water, which can replace the hydrogen peroxide and process the aseptic packaging container.
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