The development of food vacuum packaging
Vacuum packaging skills originated in the 20th century. Since polyester and polyethylene plastic films were used in commodity packaging in 1950, vacuum packaging machines have developed rapidly. The development of packaging machine skills is mainly reflected in the following points: 1. High productivity. The production rate of vacuum packaging machines has developed from several pieces per minute to dozens of pieces, and the production speed of thermoforming-filling-sealing machines can be as high as 500 pieces/min. 2. Automation. For example, Kenwei Machinery's 500 double-chamber vacuum packaging machine has the functions of vacuuming, sealing, printing, and cooling at one time. It is mainly used for the packaging of tea, peanuts, shrimp, corn and other foods. 3. Single multi-function. To end the single-machine multi-function, a modular design must be selected. Through the transformation and combination of functional modules, it becomes a different type of vacuum packaging machine suitable for different packaging materials, packaging items, and packaging requirements. A more representative product is the mandrel wheel multi-station bag-making vacuum packaging machine produced by Kenwei Machinery Factory, which can perform various functions such as bag-making, weighing, filling, vacuuming, and sealing on one machine. 4. Build the production line. When the customer needs more and more machine functions, if the functions are combined in a single machine, the structure will be very complicated, and the operation and repair will be inconvenient. At this time, several machines with different functions and matching power can be combined and successfully used. production line. 5. Use new skills. In the packaging method, inflatable packaging is used instead of vacuum packaging, and the research on inflatable ingredients, packaging materials and inflatable packaging machines is closely combined; in control technology, more computer technology and microelectronics technology are used; in sealing, heat pipes are used And cold sealing skills, you can also consider installing advanced equipment directly on the vacuum packaging machine, such as installing a computer-controlled high-precision combination weigherfor coarse-grained materials; on a rotary or vacuum packaging machine, using advanced circular arc surface cam indexing machinery Wait.
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