Packaging is a necessary condition for products to enter the circulation field, and the main means of achieving packaging is the use of packaging machinery. With the development of the times and the advancement of technology, packaging equipment is playing an increasingly important role in the packaging field. Its main functions are as follows:
        (1) can greatly improve labor productivity
        Mechanical packaging is much faster than manual packaging. For example, candy packaging can only pack more than a dozen pieces in 1 minute, while candy packaging can reach hundreds or even thousands of pieces per minute, increasing efficiency by dozens of times.
        (2) can effectively guarantee the quality of packaging
        According to the requirements of the packaging, the mechanical packaging can obtain the packaging with the same specifications according to the required shape and size, and the manual packaging cannot be guaranteed. This is especially important for export goods. Only mechanical packaging can achieve standardization and standardization of packaging, and meet the requirements of collective packaging.
        (3) can achieve the operation that manual packaging can not achieve
        Some packaging operations, such as vacuum packaging, inflatable packaging, body packaging, etc., are all impossible to achieve by hand packaging, and can only be achieved.
         (4) can reduce labor intensity and improve working conditions
         Manual packaging is labor intensive. For example, it is labor-intensive and unsafe to manually package large and heavy products. For light and small products, due to the high frequency and monotonous movement, workers are prone to occupational diseases.
        (5) Labor protection for workers
        For some products that seriously affect your health, such as dusty and toxic products, irritating and radioactive products, it is inevitable to avoid health hazard by hand packaging, while mechanical packaging can avoid it and effectively protect the environment from pollution.
        (6) can reduce packaging costs and save storage costs
        For loose products, such as cotton, tobacco, silk, hemp, etc., compression packaging with a compression packaging machine can greatly reduce the volume, thereby reducing packaging costs. At the same time, due to the large size reduction, saving storage capacity, reducing storage costs, and facilitating transportation.
        (7) Reliable product hygiene
        Some products, such as food and medicine packaging, are not allowed to be packaged by hand according to the hygiene law, because they will contaminate the product, and the mechanical packaging avoids direct contact with food and medicine, ensuring the quality of hygiene.
        (8) can promote the development of related industries
        Packaging machinery is a comprehensive science, which involves materials, processes, equipment, electronics, electrical appliances, automatic control and other disciplines, requiring all relevant disciplines to develop synchronously and harmoniously. How the problems of disciplines will affect the whole machine of packaging machinery performance.

         Food paper bag machine should break the "small and scattered" situation and develop in a high-precision direction. From the perspective of product development, China still basically stays in the imitation stage, and its self-development ability is weak. Research funding only accounts for 1% of sales, while abroad Up to 8% to 10%. In general, compared with internationally advanced products, China's packaging machinery is at a disadvantage in terms of product development, performance, quality, reliability, and service.
         Mechanical versatility, the development of small and medium-sized single machine, but the equipment is small, high precision, easy to install, easy to operate, and high degree of automation. Can adapt to the packaging needs of a variety of foods. It meets the requirements of food hygiene and is easy to clean and does not pollute food.
        Intelligentization is a trend in the future of food paper bag machines. The role of smart packaging is to better provide safe and convenient packaging for food, and to keep the taste of food unchanged, which is why paper paper bags will gradually The reason for replacing plastic bags, we will introduce this trend in detail below.
        First of all, it has the advantage of packaging fresh fruits and vegetables. Because of its poor gas permeability, traditional film packaging materials are not suitable for storing ready-made salads. Therefore, as long as the food is packaged in the traditional way, They tend to decay very quickly. Therefore, smart packaging, which controls the oxygen outlet and maintains an optimal environment, is the best packaging method for food during storage, storage and transportation.

        Paper bag machines are often mechatronic devices that require the fullest use of information products. Some planners of domestic companies are unfamiliar with electronic goods, and dare or not choose, which greatly restricts the improvement of the level of paper bag machines.
         For example, many foreign paper bag machines mostly use separate transmission, which can greatly shorten the transmission chain of the whole machine, greatly simplify the structure, and greatly improve the precision and speed. One of the core skills here is the multi-motor drag synchronization tool paddle mixer, pneumatic mixer, high shear mixer, mixing mixer, and mixing mixer. It is not difficult to grasp this skill. Only some planners I don't know the intent of this development of packaging machinery. Another core skill is that many servo drives are used, but the old planners will not plan and choose the servo mechanism and its control system.
        Many of the leading paper bag machines use a number of new inspection systems to ensure the stability and reliability of the paper bag machine. With the addition of professional penetration and the development of information skills by automation vendors, the increasing number of planners are taking advantage of leading automation skills and using leading automation products to enhance the functionality of the equipment.
        We must bear the reality that China's paper bag machine is behind the developed countries, and the fundamental reason is that key skills cannot be grasped. Therefore, in the future development experience, domestic manufacturers urgently need to improve their own skill level and planning concept.

The main forms of heat-sealed bags are hot plate type, pulse type, high frequency type and ultrasonic type.
(1) Hot plate type heat sealing. This is the most common heat sealing method in which the film 3 to be sealed is pressed between the heat-resistant rubber 4 and a heating plate heated to a certain temperature (constant temperature control) to achieve heat sealing. The heat sealing machine has the advantages of simple structure and principle, and fast sealing speed, so it is widely used for heat sealing of polyethylene film and polyethylene composite film. However, it is not suitable for heat sealing of a film which is easily contracted or decomposed by heat.
(2) Pulse heat sealing. For example, a nickel-chromium alloy strip film is pressed on a heat-resistant rubber, and a nickel-chromium alloy strip is instantaneously applied by a large current, and the heat is used for sealing. It is characterized in that the nickel-chromium alloy strip leaves the heat-sealed portion after being cooled, so that even a film that is easily deformed can be heat-sealed by this method. This method is suitable for the sealing of products requiring high sealing strength and sealing properties. For example, the packaging of items with a lot of water and the sealing of vacuum packaging. This method is generally suitable for intermittent sealing.
(3) High frequency heat sealing. It is suitable for high-frequency electrode pressing film, plus high-frequency voltage, heat-sealing by dielectric loss of polymer. The sealing portion has the highest sealing surface, so the film does not overheat and the sealing strength is high.
(4) Ultrasonic hot air. This hot air mechanism is composed of a high frequency oscillator, a magnetostrictive vibrator that converts high frequency electric energy into longitudinal vibration, and an exponential curve type amplitude amplifier that transmits longitudinal vibration to the film. The ultrasonic vibration transmitted by the exponential curve type amplitude amplifier during heat sealing causes the laminated surface of the film to generate heat and melt and bond. This heat sealing method is characterized by heat generation at the center of the film lamination, and is suitable for continuous sealing of heat-shrinkable films such as biaxially oriented films.

        The automatic paper bag machine is made of primary color or printed flat sheet of paper. It is a hoisting device for making a square bottom paper bag. The process flow is roughly as follows: the flat sheet after printing (or film coating) is transported to the pull gauge part by the automatic paper feeder for positioning, and the rolling equipment is used to feed the pressure line, and then transported to the open bottom part by the transport device. Press the transverse line, open the bottom, glue, press and finally output the finished paper bag. (Mechanical speed differs depending on the quality of the paper, the weight of the paper, the printing effect, whether it fits the pp film, the quality of the adhesive, the paper standard, the climate, and the job shop environment.)
        The characteristic paste paper bag is an old-fashioned handicraft industry, which is environmentally friendly. Nowadays, the portable paper bags have been printed and have become a variety of high-end goods packaging or gift bags. The plan for paper bags is generally very concise. As an extension of the merchandising strategy, an outstanding corporate image is the key. Nowadays, the concept of continuous addition is used on paper bags, and various fun pictures are printed on the paper tape, making the days quieter and more interesting.
        The parameters of the portable paper bag plan, the standard of the shopping bag plan principle, the top edge of the paper bag is folded 60mm, which is used to strengthen the handle fixing force. The width of the bottom edge of the paper bag is 15mm to strengthen the load-bearing force of the bottom of the bag (the side width is reduced by 15mm). The paper bag is almost 30mm, and it must be on the right side.
         The finished shopping bag should be provided with 2 folding bags, 6 top edges, 6 bottom edges and other folding bag symbols to facilitate accurate forming of the paper bag. Shopping bag production standards, to meet the number of paper open, in order to benefit economic benefits. The paper is oriented parallel to the "high" of the paper bag to facilitate the folding of the paper.