Summary of pig carcasses slaughtered quickly cooled after processing, the carcass within 24 hours the temperature dropped to 0 ~ 4 , and in the subsequent segmentation, packaging , distribution and retail process, always fresh in the range of 0 ~ 4 meat called chilled meat . Microbial contamination is an important quality chilled meat product hazards . Circulation of chilled meat , currently used in the plant big vacuum packaging, transportation to the supermarket , the fresh produce into a small package tray .Keywords cooling chilled meat packagingAs early as two decades ago , the developed countries began chilled meat research and promotion. Today, these countries already have a scientific processing and distribution technology , as well as sound and effective quality control system in their supermarket display and sell basically chilled meat . The Chinese people are still accustomed to buying the morning slaughter , morning market, but also to maintain a certain temperature "hot meat ." Meanwhile , there is still a large proportion of frozen meat on the market. So, hot meat, frozen meat and chilled meat What are the characteristics of the three it ?A chilled meat characteristicsJust kill livestock bleeding occurred immediately after the death of stiff process will produce some heat , resulting in a slight increase of livestock meat warm body temperature, slaughter pigs to 40 ~ 42 , then slowly down to room temperature . At this listing hot meat production for the propagation of microbes provide a suitable temperature , nutrient -rich and high water activity , if spoilage and pathogenic bacteria overgrowth , lurking under the risk of food poisoning .The beginning of this century, with the development of refrigeration technology , frozen meat processing technology gradually applied and circulation , and the emergence of frozen meat . Frozen meat is the meat is placed in -18 below ambient freeze and save the meat, the meat tissue was frozen state , inhibiting the growth of microorganisms . But the ice thaw frozen meat in the process, the muscle cell matrix formation ( when water freezes larger size ) will pierce the muscle cells, causing loss of juice , nutrients and flavor deterioration occursChilled meat refers to strictly enforce the quarantine system of animal carcasses after slaughter rapid cooling treatment, the carcass temperature ( inside leg measurement point in the future ) dropped to 0 ~ 4 within 24 hours , and in the subsequent processing, distribution and retailing process is always kept in the range of fresh meat of 0 ~ 4 . Compared clear plastic packaging with hot meat , meat is always in the cool environment , the majority of the growth of microorganisms is inhibited, and Clostridium botulinum bacteria , such as Staphylococcus aureus has not secrete toxins that can ensure the health and safety of the meat. And chilled meat has gone through more adequate solution of stiff maturation process , soft and flexible, delicious taste . Compared with frozen clear plastic box meat, chilled plastics products meat has less juice loss , the advantages of high nutritional value .In plastic packageplastic case summary , meat with safety and health, taste delicious, delicate taste , nutritional value advantages. Chilled meat consumption will become a trend, and this is an important symbol of national food culture progress. In today's global economy , learning advanced technologies developed rapidly popularizing meat, meat science and technology workers is a priority for us .Changes in the muscle tissue of the carcass after slaughter 22.1 mature meatJust finished pig carcasses slaughtered due to muscle tissue inside the oxygen supply is stopped, the muscle anaerobic glycolysis instead of aerobic respiration metabolism. Glycolysis produces lactic acid , ATP to ADP degradation and release energy, so that myosin and actin binding to actin- myosin contraction . However, due to the absence of oxygen to produce a molecule of glycogen only 3 molecule ATP ( under aerobic conditions for 39 molecules ATP), ATP dramatically reduce the number of muscle contraction can not be discharged, a phenomenon known as death stiff. And because the accumulation of lactic acid , pH value of the meat is decreased , under normal conditions , 24 hours post-mortem meat pH value to 5.8 . In 2 ~ 4 condition , 1 to 2 days after the death of stiff phase ends , actomyosin dissociation of myosin and actin, the texture of the meat gradually softened tissue under autolysis inherent vac tray enzymes , meat become better flavor , tenderness increased, this process is called meat maturation.2.2 Effect of microorganisms on meatMicrobial contamination is inevitable, it 's not only the growth and reproduction of sensory properties of meat , color, smell and texture packaging company , such as the occurrence of such a serious deterioration and destruction of the nutritional content of the meat. The reason for the cooling of the carcass after slaughter process is to be completed in the protection of stiff muscle tissue autolysis and maturation process in the meat tissue to prevent microbial proliferation and excessive health hazards to consumers .

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First, the processFresh fruits and vegetables cleaning ??surface sterilization detoxification rinsing ??film StorageSecond, the process pointsl, choose fresh raw materials should be selected fresh ( preferably eight mature ) no rot , no serious pests, no damage fruit and vegetable products , after picking the need for sterilization, preservation treatment immediately , minimizing handling and preservation after picking between storage time .2 , after picking the fruits into a clean washing water and the amount of cleaning liquid detergent formulation , washed surfaces of various soil, dirt and other eggs .3 , sterilization detoxification ( Choose one of two ways )( 1 ) the use of potassium permanganate solution sterilization detoxification.The specific method is: clean fruits and vegetables release potassium permanganate solution, 0.1% -0.2 % of the soak 1 to 3 minutes .( 2 ) the use of peracetic acid sterilization.When using the liquid to be sterilized and then added to 3 to 4 -fold diluted with water , and potassium permanganate solution using the same method ( Note : this method sterilized vegetable rinsing step can be removed ) .In addition, ozone can also be used as a mechanism of ozone water disinfection .4 , immediately after sterilization detoxification rinse fruits and vegetables into clean tap water rinse , wash the surface residual sterilizing liquid , remove and put on a reed mat , drain surface water plastic package in the shade.5 , to dip coating , spray coating or other means to advance preparation of a good film preservation solution evenly attached to the surface of fruits and vegetables , coated on immediately after the reed mat or mats, dry surface in a cool environment, that in the fruit and vegetable surface layer of transparent , semi- permeable preservation of film formation .6, the storage conditions( 1 ) selection of ventilation dark, no rodent room.( 2 ) a room or cellar walls before use with 1.5% solution of bleach spray sterilization. Can also be sprayed with 0.3% peracetic acid bacteria . In addition, fruits and vegetables during storage , storage room on a regular basis for sterilization . Sterilizing solution can be used potassium permanganate solution or bleach solution .( 3 ) Storage sprinkle with ground lime .( 4 ) for the production of the corresponding quantity of fruits and vegetables stacked in a storeroom in flower . Fruit baskets can also be stacked directly or breathable bag after code on flower stand.( 5 ) In order to release ethylene gas from fruits and vegetables to remove oxidation , can be used both methods ( Choose one ) , one oxidant law: the upcoming preparation of a good oxidation preservative, 5 grams per kilogram of fruit and vegetable preservative ( dry basis ) proportion in full bloom in plastic or porcelain container, placed in the bottom evenly distributed storage room or cellar . Second, ozone oxidation method machine : that is, in the upper part of the room or cellar to install an ozone machine, requires an ozone concentration of 6 mg per cubic meter ( Note: When ozone concentrations exceed 2 mg / per cubic meter , the people for a long time packaging company indoor breathing plastic case harmful, clear plastic box paying particular attention to the operation ) , ozone machine models depending on room size. Ozone machine boot time is 2-3 hours a day .( 6 ) In order to prevent the surface of the storage of fruits and vegetables " sweat " , a regular window ventilation 1 to 2 hours , summer ventilation timing night, winter and select noon.( 7 ) floor storage compartment in the soil as well, so to maintain high relative humidity (typically fruit and vegetable requirements humidity 80-95 % RH Storage citrus fruit smaller, hygrometer detects availability ) , or only by artificial water, time-consuming and laborious.Third, pay attention1 Storage generally used just after picking , maturity is about eight mature fruits and vegetables (in late-maturing varieties as well ) .2 , fresh fruits and vegetables be the most suitable autumn , the best storage environment for the cellar , storage temperature is 0 ~ 15 appropriate, pears, peaches , plums, grapes, strawberries , garlic sprouts optimum temperature 0 ~ 5 , green peppers , green tomatoes, cucumber optimum temperature is about 8 .3 , fruit and vegetable storage should be selected 4-5 in the morning , performed at low temperature, the surface of fruits and vegetables " sweat " phenomenon after storage case .4, using the technology of the time be fresh leafy vegetables , in addition to selection of the coatingPreservation solution , but can also be purchased directly preservation of ozone preservation machine better.5 , plastics products the coating liquid ingredients vac tray except fresh herbs are selected outside food clear plastic packaging additives, industrial products other optional ingredients .6 , fresh fruits and vegetables should regularly during the visual inspection , such as fruits and vegetables found to have softened the phenomenon of aging , it is timely sale of the library , there are some mildew should be promptly removed.7 , high concentrations of acetic acid and hydrogen peroxide ( also known as hydrogen peroxide ) is corrosive liquid formulation of peracetic acid sterilization should pay attention to safety , and diluted with a plastic container full bloom ; while saving sealed storage in a cool dark place , valid for six months.

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First, the difference between fresh and shelfWhen people buy food , accustomed to focusing on shelf-life, and the shelf life is a necessary condition for food security. As people 's living standards improve, people only pay attention to the requirements for food safety, but also want to purchase the food is fresh. So the concept of " fresh" came into being . The so-called "fresh " means food in the premise of ensuring safety , but also in nutrition vac tray , color, taste and flavor and other aspects can be guaranteed. Preservation will be able shelf , shelf not fresh.Second, the composite modified atmosphere packaging plastic case (MAP) preservation principles1 . Complex known as modified atmosphere packaging gas replacement packaging, internationally known as MAP packaging ( ie Modified Atmosphere Packing). Principle complex composite packaging machine is fresh gas ( 2-4 kinds of gas mixing ratio by food characteristics ) , the packaging box / bag of air replacement, changing external environment boxes / bags of food , to inhibit bacterial ( microorganisms ) of growth and reproduction , metabolism slows the speed of fresh fruits and vegetables , thus prolonging the shelf or shelf life of food .2 . Preservative gas generally consists of carbon dioxide (CO2), nitrogen (N2), oxygen (O2) and a few specialty gases. CO2 gas can inhibit the growth of most spoilage bacteria and molds propagation effect is fresh gas main antibacterial ingredients ; O2 inhibit the growth of most anaerobic bacteria and maintain the color of fresh meat , fresh fruits and vegetables to maintain aerobic respiration and maintain freshness role ; N2 is an inert gas , and food does not work, as the filling gas , and CO2, O2 , and specialty gases composed of packaging company complex fresh gas . Different food fruits and vegetables, fresh ingredients and proportions of gas is also different. SANRAD company through a long number of experiments , practice, a large quantity of gas composition ratio data , achieved the best food preservation effect of fruits and vegetables .Third, the composite MAP packaging preservation of key technologiesComposite modified atmosphere packaging technology is the key to controlling the ratio of fresh gas complex precision plastics products and gas replacement rate. As food fruits and vegetables of different performance characteristics itself , its proportion of the characteristics of fresh gas with considerable sensitivity. Thus , qualified composite packaging machines should be equipped with high- precision automatic gas mixing system , the proportion of error should be less than 2% , gas replacement rate is greater than 99.5% , otherwise the effect will be greatly affected preservation , preservation effect and even some products worse than ordinary sealed packaging. Equipment qualified to judge whether or not these two parameters should be the standard .Fourth, clear plastic packaging the composite Atmosphere advantage over other preservation ( shelf ) methodAt present, the common food preservation ( or shelf ) methods are mainly 1 ) Chemical preservation ;( 2 ) fresh frozen ;( 3 ) vacuum autoclave Shelf ;( 4 ) vacuum nitrogen preservation ;( 5 ) composite modified atmosphere ;( 6 ) Genetic biological preservation .In these five fresh ( shelf ) clear plastic box technology , chemical preservation is the use of antimicrobial preservatives , but consumers are concerned about the side effects of preservatives restricted ; shortcoming is that the taste of fresh frozen foods frozen after taste changes ; vacuum high-temperature sterilization the disadvantage is that the unique taste of food , taste , nutrition damaging ; nitrogen packaging can keep food taste better , taste and nutrition, but need to aseptic packaging environment , the environment is extremely demanding, require a larger investment . Atmosphere complex biological and genetic preservation is a new preservation technology developed on the basis of the above tradition , the packaging correspondingly lower environmental requirements without large investments, only the packaging environment with ultraviolet or ozone sterilization and operating personnel soft environment to make the appropriate specification , which is characterized by high-temperature sterilization without so complex atmosphere packaging to ensure the taste, flavor and nutrients of the original food , the real guarantee of food juice, flavor , original.Fifth, use of( 1 ) various Lucai , cooking, fish products ;( 2 ) fresh aquatic animal ;( 3 ) mushroom fresh fruits and vegetables ;( 4 ) moon cake cake soy ;( 5 ) pickle cured products ;( 6 ) tea, herbs and local products ;( 7 ) supermarket distribution centers need all kinds of fresh food .Six for packaging materials( 1 ) Packaging : PP, PE, CT, PET, nylon, aluminum foil.

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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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The water content of fresh fruits and vegetables up to 65 ~ 96 %, but after losing to add water collected in the storage and transport gradually wilting , declining to make weight , the direct economic losses caused . In addition , dehydration can also cause loss of fresh product , under normal circumstances , fruit and vegetable dehydration 5% appeared wilting and collapse , in a warm , dry environment for several hours , most of the fruits and vegetables are wilted . Some fruits although not to the degree of wilting , but dehydration of fruits and vegetables has affected taste, crispness , color and clear plastic box flavor.Fruits and vegetables can cause wilting metabolic disorders that increase the hydrolytic activity , such as sweetened dried sweet potatoes , because of dehydration caused by the hydrolysis of starch to sugar results. When fruits and vegetables severe dehydration , cell concentration increased, some ions such as ammonia and plastic case hydrogen ion concentration is too packaging company high will cause cell toxicity , or even destroy the colloidal structure of protoplasm . Organizations can cause excessive water loss and stimulate ethylene content increased ABA synthesis vac tray , accelerated aging and falling organ . Thus, in post-harvest handling of fruits and vegetables, and storage and transportation process should try to control water loss . But there are some exceptions , such as onions , garlic should be properly stored before drying , dry scaly accelerate and promote products dormancy, moderately dry cabbage leaves so mild dehydration, can reduce the freezing point and improve cold tolerance .Wilting destroyed the normal metabolism of fruits and vegetables , the hydrolysis process enhanced cell turgor pressure drop caused by the mechanical properties of structural change , will inevitably affect the fruit and vegetables storability and disease resistance . The greater the degree of tissue dehydration wilting , the more vulnerable to microbial infection , disease resistance fall faster.Postharvest measures to prevent water loss1 package , waxing or coatingThe easiest way to reduce dehydration of fruits and vegetables is to use a plastic film or other waterproof material to cover up the product , the product can also be packed in a bag , box or tray. Polyethylene film is preferably waterproof material. But we must note that the product is packaged in reducing water loss while also reducing the cooling rate of the product. In addition, water absorption capacity of the packaging material can not be ignored , wax or resin composite package deal package prevents water absorption , although the cost is higher, but there is practical value in business. In addition, we can also wax or paint surface of the product , and then coupled with appropriate packaging to prevent product dehydration.(2) clear plastic packaging increase air humidityAnother effective way to reduce the fruit and vegetable dehydration is to increase the relative humidity of the air , but high humidity favorable for mold growth , and with the use of fungicides. Automatic humidifier to increase air moisture available to the plastics products library spray mists or spray steam , watering can on the ground or in the library hang wet straws ; evaporator condenser or an appropriate increase in humidity , so that the storage temperature is maintained at less than 2 ~ in the range of 3 . In short , the relative humidity within the library maintained at 95% , the product water loss can be avoided .3 . Proper ventilationWhether natural or mechanical ventilation libraries cold adequate ventilation is a must, it can be taken away and the heat load library inside temperature to prevent uneven , but to minimize wind speed of 0.3 to 3 m / s wind speed little effect on product moisture evaporation .4 Use cold sandwichThe library consists of two layers of sandwich walls composed cold , cold air circulation middle , both heat and moisture the outer wall , the inner wall is not insulated , the evaporator is disposed between the two walls , by using the conductive library heat exchange . Since the evaporator is not in the library , the product is not captured in the water and frost , high humidity library prevent dehydration products .5 Use Breeze GalleryThe cold breeze library is fed through the top of the porous library library or to go through the cold air humidifier and then sent to the library , you can effectively prevent water loss

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Re-use and recycling of packaging materials, not only to solve environmental problems, but also can generate a lot of money in the social and economic benefits. Japan to accelerate the development of the use of recycled PET bottles. Japanese MITI method to chemically decompose recovered PET bottles and PET bottles for new made. Currently about plastic packaging box 70% of the used PET bottles as the fiber material after recovery. After the rest of the used PET bottles collected by local government agencies organize recycling. clear plastic packaging PET chemical decomposition method, the first multi-stage by depolymerization of removing foreign matter, and then by other purification step, the PET bottle down into BHET. Teijin recently to develop a recovery from waste PET bottles DMT (dimethyl terephthalate) and EG (ethylene glycol) have been put into circulation and production methods. The method is first crushed and cleaned waste PET bottles, and then dissolved in EG, under the temperature and the boiling point of EG pressure 0.1MPa, the PET depolymerization produce bis - hydroxyethyl terephthalate (BHET). Then filtered and the residue except detersive additives, BHET reacted with methanol, and the boiling point of methanol at a pressure of 0.1MPa, after transesterification and generating DMT EG. Then separated by distillation DMT and EG, recycling EMT with EG's purity of 99.99%. DMT can be transformed into pure TPA (terephthalic acid), for the manufacture of bottle-grade PET resin. Japan's MITI also effective recovery of ethylene glycol is used as solvent for PET bottles. Japanese drum Plastic Industries has developed waste PET bottles made of plastic transparent plate. These products can have pure raw allog of PET and polycarbonate with the house (PC) all og of the house with two products, both of which contain more than 25% recycled PET, light transmission rate up to 90% , has the same transparency and PG plate, even after thermoforming process section, the transparency can be maintained. Both products have the Japanese Association for PET bottle PET bottle recycling push Award logo, as environmentally friendly products to sell. Bin Plastic Industry also use PVC sheet production process development and production of renewable cutting sheet, PC sheet production of renewable recycling of waste products to be recycled plastic panels. German plastics recycling companies trying to promote re-use of households and small businesses discarded plastic packaging materials. The company collects plastic packaging materials through the yellow bins and yellow garbage bags, according to the fraction of the material collected in plastic packaging to the classification of the device. Are two ways to recycle. First, the old plastic re-melt or be transformed to produce renewable tablets or pre-cooked parts, can produce pallets, plastic trays anti-noise material or fence. The second is the old broken down plastic packaging into the chemical composition of the plastic and gain raw materials, such as synthetic or methanol. German plastics recycling company goal is to reduce plastic packaging for recycling old subsidies, and prompted to do just funded with proceeds from the sale of the finished product cost of production of finished products. Germany Krone company successfully developed high-quality PET bottle recycling system. Its annual processing capacity of up to 15,000 tons PET bottles, PET raw material can be directly produced by adding after the other PET containers, greatly reduce production costs, significant environmental benefits. PET bottle recycling system to eliminate the use of chemical coating technology to eliminate caustic chemical coating agent for the removal of contaminants PET bottle surface adhesion can be achieved circulating any kind of PET bottle recycling. After the technical processing of recycled products, plastic packaging design not only the production of preforms can be mixed directly, while recycling products due to low levels of acetaldehyde and yellow pigment, but also to meet the requirements of purity and quality, especially for the food and beverage industry products Packaging costs 20% lower than the plastic box design average 30% new material. This technology can be widely used to handle non-returnable bottles, recyclable bottles are no longer using clamshell packaging and recycling bottles ranged between the two recycling. The United States strongly advocates the recycling of waste paper, with remarkable results. U.S. E-Fech Products made from recycled paper E-cubeTM packaging materials, like box-type appearance, after filling perishable goods such as eggs can not move in the box to avoid rupture convenient than filling the space with foam, fast , can be filled with any shape of goods, recyclable and biodegradable, safe and nontoxic. American LongWiew Fibers made from recycled kraft paper to produce high quality retail packaging bags shank, can be tri-color to four-color printing, color tripe into the deep white and other colors, which can compete with paper bags full of plastic bags, and can be biodegradable, environmentally safe. Finnish National Highway Research Center will be all kinds of plastic packaging waste blending into the asphalt paved road, that first plastic cups, bags, bottles and crushed, after heating, the solvent treatment added to the asphalt, the proportion of 30% bitumen, paved road elasticity, friction noise when the wheel is smaller.

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The rapid development of plastic food plastic packaging packaging marketIn recent years , due to the global packaging industry to implement a combination of new initiatives , such as cross-border cooperation , especially in the world of food packaging plastic packaging industry has been greatly developed , new materials , new processes , new technologies, new products are emerging .Development of multifunctional composite filmLarge number of foreign development of multifunctional composite membranes to further refine its function , for example: the film can withstand cold -18 , -20 , -35 low temperature environment ; for PP film for moisture proof handle made ??of , its products can be divided into moisture, condensation , steam-proof , adjustable water and other types ; corrosion film can be packaged perishable , great acidity , sweetness great food ; friction membrane stacking stability ; special PE film corrosion ; moth film adds no smell insect repellent ; biaxially oriented nylon film to replace 66 heat -way stretch nylon 6 films packaged foods , can withstand high temperature of 140 ; cling film sealing, mildew , and no dew condensation phenomena ; regulating membrane absorbs water fruits release ethylene gas ; new special food packaging film can improve the aroma of food packaging ; high shielding films can protect the color, smell , taste, nutrition and taste quality indicators ; non- crystalline glass-like transparent nylon membrane stability ; protective film using a metal -modified LDPE film packaging liquid products , the heat-sealable at low temperatures .Development of modified copolymerCurrent European and American countries to invest in a large number of non-polar , polar ethylene copolymer , and to improve the tensile properties of co-extruded plastic film , and to improve transparency , to enhance stability , molecular weight distribution and plastic packaging design improved extrusion rheological properties. In contemporary injection process,In countries are plastic trays VLDPE ( very low density polyethylene ) substituted LLDPE, PP, EVA, PVC. In extrusion , injection molding, blow molding process , VLDPE the occupation of pharmaceutical, medical , cosmetic and other flexible packaging market, and the impact of food packaging .Experts believe that the contemporary world focuses on the development of the plastics industry bioplastics quickly modified , coated plastic products , plastic waste degradation and recycling of plastics . Some manufacturers in Europe and the United States have a linear ethylene - olefin copolymer and ethylene - vinyl acetate copolymer blend PA bags production , product packaging for ice cream, cream and other food . It plastic packaging box is particularly worth mentioning that, in the plastic packaging industry, notably the PEN ( polyethylene naphthalate glycol ) "new polyester" packaging materials. Since the PEN and molecular structure of PET (polyethylene terephthalate ) is similar , except that instead of benzene naphthalene ring , thus having more excellent than PET PEN barrier , gas barrier properties and especially UV resistance, good heat resistance ( ordinary amorphous PEN heat distortion temperature of 100 , whereas PET is only 70 ). With the industry's use of industrial means of production PEN, PEN will surely soon poured into the field of food packaging , packaging revolution triggered again after PET .Development of plastic metallocene ligand metallocene is an organometallic compound of a transition metal is connected to cyclopentadiene formed . I.e., metallocene polyolefin compound is a metallocene complex as a catalyst for olefin polymerization obtained by reaction of a polymer . Metallocene polymers have many advantages, such as good workability , high strength, high stiffness and good transparency , and thus people's attention , and thus introduced a number of new varieties. Metallocene plastics will have a direct impact on PP, MDPE, LLDPE, elastomers and other plastics market . Currently PE demand in the world market is 40 million tons , is expected to increase to 50 clear plastic packaging million tons by 2005 , mostly by increasing portion of metallocene polyethylene. Metallocene plastic has many advantages, such as gloss , high melt strength and good film stability, suitable for food packaging .Improved packaging containersToday introduced several new plastic technology abroad , the European launch of PVC transparent membrane instead of blow-molded hollow containers, can lose weight by 50% in the 5-9 layer co-extruded film process to make recycled plastic intermediate layer , can reduce costs slice thickness is controlled by the microprocessor feedback . Japan clamshell packaging launched PET and PC coextrusion process , not only heat resistance , impact resistance , stain resistance , chemical resistance were increased , while prices also declined . Standard set to shrink for PP foam glass , suitable for 90 pasteurized hot filling . UK launch of special PP resin injection blow bottle , can achieve light weight, high strength , uniform thickness, the purpose of the province of raw materials.Today popular abroad with plastic cups , composite cup ( outer PSP, inner PP, lid PS) pack of hot and cold beverages, liquor , convenience foods . France fructose with PE bottles , yogurt , plastic box design Germany with PC bottles of milk. Some countries are also working with PE or a mixture of soft plastic bucket with EVA to package beverages.Currently, a large number of foreign countries are supporting the development of standards and adapt to a variety of special -purpose plastic cover products. Such as the U.S. company Reynolds aluminum foil , paper , PE for bottle caps ; Europe instead of aluminum covered with shrink film cover ; Japan launched 280 high temperature resistant paint bottles and specifications of the CPI series with six paint foil cover for packaging lactic acid drinks.

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Global consumer flexible packaging market up to $ 30 billion . With the globalization of production of consumer goods , the international packaging substrate supply is no longer a new concept , but the packaging and processing of the Group 's globalization is still a relatively new phenomenon .Ten years ago, some of the larger package processing group is attracted to invest in overseas markets , but apart from a few examples of several successful , these joint ventures are few commercial success . However, now the trend to invest in overseas markets has intensified, why not ?Many regions of the world market is in printing, composite processing , production base is too saturated, so the merger has become a common phenomenon. Small processors ( usually family ) to face higher investment costs , while the clamshell packaging larger processors also face increasing price pressure. Processors in order to survive deliberate attempt to reduce costs, some processors get some processing orders ( profits tend to be lower ) from a partner or corporate acquisitions overseas , and then get the domestic processing , while medium-sized and large flexible packaging group through the use of new technologies and look for fast-growing emerging markets to ensure its competitive position in the market .The global market in the soft pack polarization : large-scale, mature markets , such as North America , Western Europe and Japan ; smaller scale , the development of emerging markets such as India, China , Southeast Asia , Eastern Europe and South America markets. Although there are emerging flexible packaging market oversupply problems, but these emerging markets at a lower cost than the more mature markets of strong demand growth potential.Promote the growth of plastic packaging the emerging flexible packaging market factors are the following :International Investment Western consumer goods manufacturers have been established , such as some Western candy, snack foods and tobacco companies, has been investing in emerging markets ;Strong and competitive technology plus the development of new markets for industrial and commercial ;Consumer packaged goods is growing, especially processed convenience foods ;Disposable income of urban populations continue to increase ;End consumer products in the global market using standard packaging ;More efficient retail system gradually develop improved.If commercial success is a way to explore the rapidly growing emerging markets , another way is to ensure that technology leadership or guarantee consumer satisfaction. Both mature and emerging markets there is a new technology, but in mature markets processors by providing funding , training, and marketing skills to release more able to easily adopt new technologies . Global consumers may favor those in collaboration with Western Flexible Packaging Group / support / joint venture of their processors . Thus , in the emerging markets , a number of local companies have ambitious ongoing international cooperation, in order to ensure their competitiveness , actively seeking to increase international cooperation, and that the West has a unique technology and marketing tools for the industrial and commercial .In the next few years, the pressure in mature markets facing processors will continue to increase , in the face of shrinking profit margins as well as the European and U.S. markets become more and more rational. This pressure will lead to the closure of some factories , but also to promote processing companies to take measures to reduce excess capacity in the market . Some companies have taken measures more closely linked with the customer. By working with partners to improve service levels and comprehensive cost reduction. A typical example is often sent to the company's technical staff at the customer , providing customers plastic box design with technical support , procurement guidance and after-sales support. Processors but also the same way in cooperation with clear plastic packaging raw material suppliers. For example , ink production businesses send technical personnel to manage the supply of packaging and processing factories ink .For those who want to develop large-scale processing companies in emerging markets , the Southeast Asia and South America is now the most attractive markets. These plastic trays areas have a large population , rising disposable income. It is worth mentioning that there are India, China , Indonesia , Brazil and Argentina and other countries in the market. Some savvy emerging markets will become plastic packaging design more powerful, these companies are mainly development model to follow and learn from mature markets , in addition, these companies will increasingly seek less support from overseas markets:Techniques ( such as high-barrier coating technology ) have a competitive advantage ;Established supply partnerships with other processing companies ;Mergers ( especially with the neighboring country 's market mergers and mergers ) .Right business strategy depends on the company 's size, goals and attractiveness for partners .In plastic packaging box order to maintain their competitive position and to explore emerging markets , is being staged between the mature markets of the major processing companies a fierce battle , only to face the competition between them , but also from emerging markets face strong local , eager to seize more market competitors. In order to remain invincible in the future , packaging and processing company must know ourselves , based on information available to do resourcefulness and expand market share , as soon as possible to seize potential investment opportunities.

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