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With the continuous development of sales forms in foreign countries, the number of customers' self-selected foods and vending machines has increased, the level of management automation has been continuously improved, and the popularity of semi-automatic cold storage has increased. The number of fully automated cold storage has gradually increased in the food industry. The packaging and packaging business has also been continuously adapted to the requirements of food, so the food packaging materials and packaging machinery industry has also developed rapidly.
Food packaging is an integral part of the industry. Only industrialized food packaging specifications are standardized, which is conducive to the mechanization and automation of loading, unloading, transportation and warehousing. Only by dividing the food directly into reasonable small packaging that customers welcome, is it beneficial to sell.
In recent years, there have been research institutes specializing in packaging and packaging operations in the United States, the United Kingdom, Japan and other countries; packaging companies specializing in food packaging and packaging have also appeared in large numbers. The situation of foreign food packaging and machinery and equipment is introduced as follows:
(1) Small commercial container Small commercial container is a loading box that facilitates mechanical loading, unloading, handling and storage of food. It is characterized by a uniform specification standard to meet the needs of mechanization and automation, and at the same time facilitates the entry and exit of food, and is convenient for counting the quantity of goods in the box. It has sufficient strength to be used repeatedly and to ensure the safety of food. Some containers are labeled or printed with "universal product symbols" around the box according to the needs of the automated warehouse.
Small commercial containers are generally made of plastic, wood or corrugated paper, and there is no spring device at the bottom of the box. As the food in the box is reduced, the food at the bottom of the box can be automatically moved up. These small commercial containers are not only easy to mechanize, automated loading, unloading, transportation and storage, but also a small container with wheels can be directly transported to the retail store counter for use as a display. The large-scale use of small containers in the commercial industry not only improves work efficiency, saves manpower, reduces food consumption, but also reduces food machinery and equipment costs in retail, and creates favorable conditions for further mechanization and automation.
(2) Plastic film food packaging in foreign countries With the development of plastic machinery industry, plastic film is widely used as inner packaging. In addition to common plastic film bags, zui has the following new plastic film packaging methods: hot Shrink packaging, heat shrink packaging is to use a plastic film with heat shrinking properties as a packaging material, after wrapping the food, quickly put it into a heating device to heat to a certain temperature, the packaging film shrinks by a certain ratio, tightly Wrap the packaged food. The heat shrinkable film is generally thin and has good transparency, and the customer can directly observe the food. This packaging method is very popular with customers.
Heat shrinkable packaging is widely used for food, industrial and other goods, as well as for packaging multiple items. For example, a frozen chicken, a bag of frozen meat, a bag of frozen fish, etc. can be packaged. The heat shrinkable packaging has the advantages of convenient transportation, good transparency, good appearance, firm packaging, reduced packaging volume, and good cleaning. The packaging machinery used is relatively simple. At present, this packaging method is very popular abroad. II Inflatable packaging, filled with inert gas in a heat shrinkable package, which can inhibit bacterial growth and extend the shelf life of food. III Vacuum packaging, wrap the food with a plastic film and seal it, then take the air inside out with a vacuum pump. This can prevent insects, corrosion, moisture, and make food difficult to deteriorate. The automated vacuum packaging machine has been widely used abroad.
(3) Foreign packaging machinery industry In recent years, the foreign packaging machinery industry has developed rapidly. Mechanization and automation of powdered, granulated, and blocky food packaging. Metering, counting, bag making, bagging, sealing, folding, boxing, sealing and packing have formed assembly lines, and the packaging efficiency is very high. There are many varieties of packaging machinery and equipment, and manufacturers from various countries have their own names and models, and their names are numerous. According to its function or packaging form, foreign countries usually have the following names: loader (liquid, solid), bag filling machine, container forming and loading machine, pillow packaging machine, encapsulation machine, shrink packaging machine, cartoning, Packing, capping machine, labeling machine, strapping machine.
The foreign packaging industry is developing towards "all automation"
The foreign packaging industry is developing towards full automation. The large number of automatic packaging machines and automatic packaging lines can achieve high efficiency and low cost.