Modern food packaging design principles are : According to the packaging of food protection requirements, scientifically selected good protection packaging materials, reasonable structure design and packaging design , supporting the use of precise and reliable packaging machinery and equipment ; using advanced packaging technical methods , so as to achieve the purpose of protecting the food and prolong shelf life .First, you must understand the requirements of protective foodsThe chemical composition of different foods , and other physical and chemical properties are not the same, so the protection of different food packaging requirements are also different . For example, the cake is more greasy , soft , and there is a certain optimum moisture content requirements, so the very least should meet the following requirements: oil high oxygen barrier properties ( to prevent oil leakage and oxidation of fat ) , high impedance wet ( cake prevent loss of moisture dries hard ) . Again, tea packaging should be high oxygen barrier properties ( to prevent oxidation of the active ingredient ) , high impedance wet ( tea damp moldy ) , high impedance optical properties ( tea will change the role of chlorophyll by sunlight ) , high impedance aroma sex ( molecular tea aroma components easily distributed, and lose flavor . Moreover , tea is also easily absorb outside odors ) , and a considerable part of the current market tea ordinary PE, PP and other transparent plastic bag , a lot of waste tea effective ingredients, the quality of tea is not guaranteed. In contrast with these foods clear plastic box , the fruits , vegetables and other respiratory effects have picked choice , which requires packaging for different gases have different transmission . Such as roasted coffee beans packaged also slowly release carbon dioxide , cheese after packaging will produce carbon dioxide, so their packaging should be high impedance oxygen and carbon dioxide permeability . Fruit and vegetable packaging mold type is often required because of the wall of the packaging bag of fruit and vegetable produce small droplets will use a series of adverse biochemical , resulting in browning of fruits and vegetables , perishable . Fruits and vegetables and the same kinds of fruits and vegetables of different varieties of different maturity on the permeability and selectivity requirements of different packaging materials . Raw meat processed foods , beverages, snack foods, baked goods and other protective packaging requirements are very different . For example , canned meat should sulfur resistant coating , the coating should be acid canned fruits , carbonated beverage containers should be resistant to a certain pressure , alcohol packaging containers should be so resistant to alcohol and aroma barrier . So, should be based on the different nature of the food itself , and water protection requirements with scientifically designed packaging.Second, select the appropriate packaging material protectionTraditional packaging materials mainly glass bottles, cans , boxes, cartons. Modern food packaging materials are vac tray plastic , paper , composite materials class ( plastic / plastic plastic case , plastic / paper , plastic / aluminum foil / paper / plastic and other types of multi-layer composite material ) , glass bottles , metal cans and so on.1 , Composites Composites are most species, the most widely used kind of flexible packaging materials. Currently plastics for food packaging 30 kinds , including plastic and there are hundreds of multi-layer composite material . Composite materials are generally 2-6 layers , but the special needs of up to 10 layers or more layers. Plastic , paper or tissue paper machine, aluminum foil and other substrates , scientific and rational use of composite or laminated compatibility , almost to meet a variety of different foods on packaging requirements . For example , Tetra Pak plastic / cardboard / plastic / plastic and other multi- material for milk shelf life of up to six months to a year . Some high barrier flexible packaging canned meat shelf life of up to three years , composite materials packaging cake shelf life of up to one year and some developed countries , after a year of nutrition , color, smell, taste, shape and still meet the microbiological cake requirements. Composite packaging design should pay particular attention to select the layers of the substrate, with must be scientific and reasonable, comprehensive performance layers combination must meet the full requirements for food packaging .2 , of plastics for food packaging plastic is up to fifteen , six kinds , such as PE, PP, PS, PET, PA, PVDC, EVA, PVA, EVOH, PVC, ionomer resin and the like . Impedance of oxygen which has PVA, EVOH, PVDC, PET, PA , etc., have high resistance wet PVDC, PP, PE , etc. ; resistant PS -ray irradiation , such as aramid , etc. ; resistant to low temperatures , such as PE, EVA, POET, PA , etc. ; resistance and mechanical properties of a good oil as ionomer resins , PA, PET , etc., that high temperature and low temperature sterilization , such as PET, PA and so on. Molecular structure of the various plastic different monomers and different degrees of polymerization, different types and quantities of additives , different performance , even if the same kind of plastic nature will be different in different grades . Therefore , the requirements must be based on the appropriate choice of plastic or plastic combination with other materials , improper selection can cause food quality dropped even lose food value. For example , a Northeast replaced with PVC plastic corrugated boxes corrugated packaging apples, because PVC barrier carbon dioxide, oxygen , water, non- performance is far greater than the gas barrier and moisture barrier cartons , so Apple can not maintain a certain breathing , resulting in a lot of decay.3 , modern packaging paper and paperboard category is mainly used a variety of processing potatoes ( cardboard ) , composite paper , laminated paper ( cardboard ) , etc., such as polymer processing paper , wax paper processing , oil processing paper , cellophane, parchment -plated aluminum foil , paper / aluminum foil laminated paper. In transport packaging , corrugated cardboard largest amount , corrugated boxes, wooden pallets almost replaced most . Is the latest cellular cartons high strength paperboard container. In addition, it should be noted that different metallized paper , aluminum and plastic paper / foil laminate , plastic / aluminum foil laminate inner structure , nature, cost, etc. , should be properly selected according to the different protection requirements and cost requirements .4 , the conventional glass bottle easily damaged , the weight / volume ratio. Modern multi- thin-walled packaging bottles light (light bottles ) , the weight of the container by a special process or a physical treatment to reduce 1/3-1/2 , but the strength is greatly improved, thereby improving the glass containers for food packaging market competitiveness.5 , metal cans are mainly traditional metal packaging tin ( aluminum sheet steel ) making three cans. Modern food packaging in addition to tin , but also uses a system of thin aluminum cans and so on. In addition to the form of the tank at the three-piece cans , as well as two-piece cans , shaped cans, spray cans.Third, the use of advanced packaging packaging company technology and methodsIn order to extend the shelf life of food , the use of the continuous development of new packaging technologies, such as active packaging , mold packaging, moisture-proof packaging, packaging -fog , anti-static packaging, selectively permeable packaging, packing slip , cushion packaging , etc. These are widely used in developed countries new technology , our applications are not common, some methods also are blank , the application of advanced technology can significantly improve the protection of the package.Fourth, the selection and packaging of food processing machinery and ancillary equipment .In order to meet the needs of the food processing technology , has developed a variety of new packaging equipment , such as vacuum packaging machine, filling the vacuum packaging machine, shrink packaging machines, blister packaging machines, skin packaging machines , sheet thermoforming equipment , liquid filling machine, form / fill / seal packaging machines, aseptic packaging equipment and so on. According to the method of packaging materials and packaging technology chosen , the choice or design and food processing technology, production capability supporting packaging machinery, packaging is a guarantee of success .Fifth, modeling, structural design should meet the scientific requirementsPackaging design clear plastic packaging should meet the geometry requirements , trying to use the least packaging containers larger volume of material , which can save the packaging materials and comply with environmental requirements. Structural design of packaging containers shall meet the mechanical requirements , compressive strength , impact strength , resistance to drop strength shall comply with the storage , transportation , sales process requirements of the package . Modeling package design should be innovative containers , such as vessel loaded with pineapple pineapple juice from apple juice and apple -shaped packaging containers lively worth advocating. It should be easy to open containers or repeated open , while others required to display open or sealed .Sixth, in line with our country's packaging and export regulationsPackaging operations throughout every step should be packaging standards , rules , regulations selection, sealing , printing, labeling and strapping , standardized throughout the packaging process , it is a good supply of raw materials , commodity and international trade , packaging containers recycling and waste treatment and other packaging materials shall comply with environmental requirements.Seven, packaging testingModern packaging is based on scientific analysis , calculation, rational selection, design and decoration , through the use of advanced packaging technology and machinery to complete . As a qualified goods, except goods ( food ) should be tested , the package must also be a variety of detection . The packaging container as breathability , moisture resistance, oil resistance , moisture resistance, and the packaging container ( plastics products material ) and that of food between tissue residues in food packaging materials , packaging materials for resistance to the food to be packaged ; packaging container Compressive strength , burst strength , impact resistance and so on. Many types of packaging testing , test items can be selected depending on the circumstances and regulatory requirements.Eight brand conscious packaging design and packaging designPackaging design should be consistent with the consumer and exporter of consumer preferences and habits. The best designs in coordination with the contents . Should clearly mark the location of text should meet the food requirements. Product description should be true . Trademarks should catchy , easy to understand , easy to spread, can play a role in wide publicity . Designer goods packaging design should brand awareness, product packaging and some easily replaced , affecting sales, such as China 's old six vinegar in Japan and Southeast Asia has a good reputation , but the replacement packaged sales greatly reduced because of the new consumer packing doubt . Therefore, a product should be scientific packaging, and can not be easily replaced.

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