Due to the wide application of fine corrugated paper (especially C-type and finer corrugated cardboard that can be printed directly) in China has just begun, there are not many large orders, so there is still a development in the market demand for mass production on the corrugated cardboard production line. process. Therefore, a plan with little investment and quick access has made some color printing carton factories take the lead in emerging markets, that is, the use of new and old single-sided machines for micro-corrugation transformation. Suppliers of C-type micro-corrugated packaging, such as Melatonin and Siemens mobile phones, were all put into production by Changzhou Wujin Haili Roller Co., Ltd. in 2001 and entered the new packaging market in China first. The characteristics of the fine corrugated corrugated type are that the corrugated type is more V-shaped and the radius of the corrugated top arc is smaller. After forming, due to the centrifugal force generated by the operation of the corrugated roller, it is easy to separate from the corrugated teeth, affecting the coating and compounding. The control of paper humidity, temperature, tension and running speed is extremely sensitive. At the same time, smaller corrugated arcs require a smaller amount of glue that is more precisely controlled. Therefore, the transformation work of the micro corrugated single-sided machine is carried out according to the above characteristics. Renovation project of micro corrugated single-sided machine 1. New corrugated roller: (1) Corrugated design parameters (corrugated strength, wrap angle, corrugated flute arc, flute height, paper consumption rate, etc.). (2) The structural design of the corrugated roller is based on the different paper guide forms (vacuum negative pressure external suction type, vacuum negative pressure internal suction type or air cushion positive pressure type) of the corrugated paper after fixed forming. There are ring and herringbone). (3) According to the rigidity of the roller body determined by the above structure of the corrugated roller and the different cylinder arrangement of each single-sided machine, design and calculate the median height of the passive corrugated roller. 2. Design, manufacture or modify different paper guide mechanisms (vacuum negative pressure external suction type, vacuum negative pressure internal suction type or air cushion positive pressure type): (1) Negative pressure hood or positive pressure sealed room. (2) Set the appropriate air volume and pressure according to the specifications of the corrugated roller. (3) According to the above form, determine the quantity and position of paper guide copper and the tuyere. 3. Glue system: (1) The newly-made glue roller (paste roller) is set to form a finer surface mesh with a thinner glue layer and achieve a circle runout accuracy of less than 0.02 mm. (2) Newly-made measuring rollers (uniform rubber roller, rubber scraping roller, quantitative roller) achieve a circle runout accuracy of less than 0.01 mm. Ensure that a glue gap of less than 0.08 mm can be achieved between the glue roller and the metering roller. (3) Adjustable paste blocking device. (4) Pneumatic device, which can quickly follow up and detach from the glue application system. 4. According to the actual structure, installation location and surrounding environment of the single-sided machine, design the direction of the suction or supply duct, determine the location of the high-pressure fan, and manufacture the suction and supply duct system and high-pressure fan bracket. 5. According to the specifications of the corrugated roller and the set air volume and pressure, the matching high-pressure fan and muffler are selected. 6. Design electrical control system. [next] Renovation program of micro-corrugated cardboard single-sided machine 1. On-site surveying and verification of the relevant dimensions and technical parameters of single-sided machines, corrugated rollers, rubber-coated rollers and metering rollers. 2. On-site design of pipeline direction and high-pressure fan location. 3. Identify other renovation and repair items that must be added. 4. Choose a professional company for production (generally, the production time does not exceed the production cycle of the new corrugated roll). 5. On-site renovation engineering and installation and commissioning are carried out by professional engineering and technical personnel of a professional company (generally 2 days, some new repair items can be removed and sent to a professional company for repair at the same time), and operation training is also conducted. According to our company ’s years of experience in the transformation of more than 100 single-sided machines, under normal circumstances, the entire transformation process only requires a few hours of downtime during site surveying and mapping and 2 days of downtime during installation and commissioning, which has little impact on the user ’s production. If the supply and demand sides arrange carefully and cooperate well, the downtime can also be shortened. When conditions permit, the ideal is to send the whole machine to a professional company for overhaul at the same time, so that you will get a brand new micro corrugated single-sided machine. Contents of other renovation and repair projects that must be added Because most of the single-sided machines that need to be modified are old ones, many parts have been worn, and need to be repaired, added and updated, it is possible to add other necessary renovation and repair items. 1. Repair after the pressure roller is worn. 2. A pair of transmission gears on the lower corrugated roller and the pressure roller needs to be newly manufactured after they are worn out (this project is not driven by the gearbox and universal coupling) 3. Repair, replacement and supplement of bearings, oil seals, sprockets, cylinders and other transmission, pneumatic, sealing and mechanical parts. 4. Restructuring, addition, replacement and repair of electrical control parts. 5. Overhaul costs. (Overhaul items include repair of all rollers, cleaning and restoration accuracy of all institutions, repainting of the whole machine, etc.) Reconstruction cost If the overhaul is included, the cost for the fine corrugation of a single-sided machine with a 1600-format size is around 100,000. Transformation cycle The project is officially confirmed, and it is usually delivered within 45 days. In recent years, many customers in Shanghai, Jiangsu, Zhejiang, Shandong, Hubei, and Guangdong have been successfully transformed by our company and achieved very good results and benefits. In China, the application market of micro corrugation is gradually emerging. Reconstruction of micro-corrugated single-sided machine, low cost, mature and reliable technology, short transformation period, small impact on production shutdown, users can enter the market development and application of new micro-corrugated cardboard products with minimum investment and fastest time Good way. However, the transformation project of the micro corrugated single-sided machine involves a mature understanding of the principle characteristics of micro corrugation and very professional design and process technology. At the same time, the production of micro corrugated cardboard is a systematic project. Control, temperature and humidity control, and cardboard quality control all have specific requirements. The mature technology and debugging experience of professional companies and operation training are very critical elements. Therefore, carton manufacturers should choose professional manufacturers to undertake renovation projects, fully consult with professional manufacturers on the relevant reconstruction matters, and discuss the technical level and process strength of professional manufacturers and their product use, after-sales service network and service quality of professional manufacturers, etc. Carry out a comprehensive and careful detailed inspection and identify the technical level of the product, and make a careful choice as well. The paper plastic compound valve pocket is composed of three layers of kraft paper, membrane and Woven Bag. He has the following advantages in comparison with PP valve pocket and PE valve pocket. Paper Plastic Compound Valve Bags Paper Plastic Compound Valve Bags,Small Paper Bags,Paper Compound Valve Bag For Cement,Compound Packaging Paper Bags Shenzhen Riversky Packing Materials CO.,LTD , https://www.jtfibc.com
1. Paper-plastic composite, the strength is higher.
2. Improve product packaging level.
3. It is more suitable for outdoor work, and it is not easy to decompose in the sunlight.
4. The friction force is stronger and more suitable for stacking.
