Contact us

Add: No. 8 Industry Zone of Xueyi, Anbu Town, Chaoan County, Chaozhou,Guangdong Province,China zipcode:515638

Tel: (+86) - 768 - 5915572

Cell phone: (+86) - 13827319633

Tel Exchange: (+86) - 768 - 5913900

Fax: (+86) - 768 - 5913868


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UNION ALL SELECT NULL,NULL,NULL,NULL,NULL-- DIsR3768Mobile) UNION ALL SELECT NULL,NULL,NULL,NULL,NULL-- TaRVMobile';WAITFOR DELAY '0:0:5'--large and 1>1480Mobile) UNION ALL SELECT NULL,NULL-- xSfcMobile) ORDER BY 1-- SMYMMobile UNION ALL SELECT NULL,NULL-- SkvEfood and 1>1/*!50000 food cardboard boxes*/wp-login.php/Nek class%374pp and 1>1-21+21*01and 1=1 and 1=1 and 1=1Mobile and 1 and 1>1Mobile ORDER BY 156wine and 1>1pp) UNION ALL SELECT NULL,NULL,NULL,NULLMobile) UNION ALL SELECT NULL-- ekMLpp)%';WAITFOR DELAY '0:0:5'--996pp)) UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL,NULL-- Dozepp) UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL-- EwDUpp and 1>1'+'21Mobile%' ORDER BY 1-- HrZppp)';WAITFOR DELAY '0:0:5'--Mobile and 1 and 1=19609999 and 1 and 184wine999999.1 union select unhex(hex(version())) -- and 1=1990Mobile UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULLpp and 2=2--2121121121212.1720pp) UNION ALL SELECT NULL,NULL,NULL,NULL,NULL,NULL40pp)) UNION ALL SELECT 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  • China's meat production since 1990, has consistently ranked first in the world, but our meat processing meat products in only 10% of total production.The world's developed countries are generally about 50%, some even as high as 70%. Meat product with the world advanced level in China is quite different compared to, especially the variety and quality of meat products, including the key causes of food packaging involving meat, mainly flexible packaging technology.
    In the next 5 to 10 years, meat production in China will be 5% to 10% growth rate continued to grow. Mainly the development of fresh meat, fresh meat of flexible packaging technology to keep pace with this development, is the industry's major concern. Flexible packaging of meat hygiene in the consumption of meat is mainly to solve the safety of shelf circulation problems. Pigs, cattle and other meat after slaughter of living will have a series of biochemical changes, from the stiff end of the maturity, the quality of meat are also constantly changing, such as shelf-life packaging does not take a scientific technology, raw meat is soon will be deteriorated. Shelf life of fresh meat for the technology, the main packaging material is a single layer of polyethylene bags beginning, and later developed into nylon / polyethylene bags flexible packaging, packaging film from a simple single-bag plastic bags to vacuum packaging and Soft film forming vacuum packaging, packaging equipment, in addition to domestic vacuum sealing packaging machine, the introduction of the soft film forming - fill - seal machine (FFS Machine) is the most advanced flexible packaging equipment. Packaging products are mainly divided small package frozen leg, big row, short ribs, ground pork and other products, which meet current market demand on a role to play. However, fresh meat was generally at a low level of flexible packaging, packaging materials, mainly polyethylene film, polyethylene materials as water vapor permeability rate greater consumption of meat during storage of dry big, serious frosting bags, packaging poor appearance and shape, most of the products printed decoration rough, so 20th century, China 80 frozen raw meat, including the lower level of packing. From the 20th century, late 80s, with the meat market, open, raw meat consumption gradually varieties of fresh meat and frozen meat, chilled meat products to the transfer. Into the 90's, the rise of supermarkets, large and medium cities, the popularity of the family refrigerator, make the production - distribution - market - Consumption of cold-chain form, as chilled meat, etc. The emergence of high-quality raw meat to create good conditions, frozen meat of flexible packaging materials present more nylon / polyethylene composite film. In addition to the packaging tray packaging types, there are vacuum packaging, shrink packaging, inflatable packaging, soft film forming vacuum packaging and so on. Flow temperature of the best in the 0 ℃ ~ 4 ℃ inside. Now with the world advanced level, our relatively short shelf life chilled meat, chilled meat quality of instability, packaging quality is not high, especially in the composite film shrink packaging industrial applications, little, slow development of inflatable packaging . Suggested that the domestic producers attention to the development of flexible packaging materials to nylon / polyethylene, nylon / polyvinyl alcohol / polyethylene heat shrinkable packaging materials such as composites; the importance of high quality packaging machinery Vacuum packaging machine, small shape - fill - seal machine equipment development to meet future development needs of flexible packaging fresh meat. Cooked meat is rich in protein, microorganisms are very easy to breed, and the fat in meat is easily oxidized in the storage deterioration. Therefore, the cooked meat is the key flexible packaging technology can extend the shelf life of products to ensure their safety and quality. Cooked meat products in China can be divided into Chinese and Western-style cooked meats cooked two categories of Chinese industrial production of cooked meat in the past and the packaging technology has fallen behind, products are divided into traditional halogen type sauce, grilled, dry goods and other varieties ; Western-style meat high degree of industrialization.
    In 1970s our country began to use cooking bags,soft-cooked canned meat, etc.On the packaging technology of soft canned material mainly by the PET / AL / CPF three composite, and transparent retort pouch from PET / CPP or PA / CPP-based. As the aluminum foil barrier composed of soft canned good performance and dark, soft vacuum-packed meat products, canned sterilization at high temperature can be stored at room temperature after 9 months to 12 months. With packaging and easy to carry, easy to open, so some of the consumer market, knuckle of pork products, chicken, sauce and other traditional Chinese meat and poultry products. However, due to high temperature sterilization treatment, poor flavor, Su Lan, canned taste is heavy and soft canned retort pouch packaging common problem, to a certain extent, limit the kind of packaging product development. PET / CPP or PA / CPP consisting of two layers of transparent materials, cooking bags are not as high barrier packaging of meat easily oxidized, it is not long shelf life. At present, the transparent high barrier packaging materials is the focus of international development, such as MXD6 nylon, EVOH composite film and the series of deposited silicon oxide film developed, so that the display of goods and greatly enhance the protection, ultra high temperature sterilization, ultra- high-pressure sterilization and irradiation, microwave sterilization technology development of new applications, applications for these materials provided a battlefield, we should attach importance to the transparency is good, high-barrier flexible packaging material blank of domestic research and development.
    Aseptic packaging and semi-aseptic packaging technology was first used in Western-style meat on the development, using a sterile flexible packaging material, in a sterile environment, sterile processed meat products to maximize their original flavor of food product flow at low temperature conditions.Western-style round legs, square legs and a biopsy-type meat products, due to aseptic processing more difficult, so most of the semi aseptic packaging technology, packaging materials are EVOH, PVDC, PE, PA and other materials made of composite co-extruded high barrier of multi-layer film or sheet such as sterile, shrink film is also more complex applications in aseptic packaging. Chinese meat aseptic packaging, semi-aseptic packaging technology needs further development and research. Such technological breakthroughs, will maintain the authentic Chinese-style meat products to extend shelf life, has very broad application prospects.
    The 21st century, China will vigorously develop the low-temperature meat products, the key technology is the low-temperature shelf life of meat products technology. Low-temperature meat products as possible to maintain the nutrition and flavor, more favored by the market. Shelf life of low-temperature meat products key technologies - is pasteurized packaged products in packaging that is later heated through Pakistan's rapidly cooling after sterilization, to eliminate microbial contamination in the packaging process. Applicable to such meat packing meat, the majority of Chinese and Western high barrier film and sheet the main compound, also can be heat sterilized by Pakistan's composite heat shrinkable material also will have a very wide range of applications.

    1980s, using PVC-based film casing filled sausage, ham after high temperature treatment began to appear in China. 90 years, the unexpected production accounts for half the share of domestic meat products. However, PVDC casings and sausage filling is mainly dependent on punch card packaging machine imported from Japan, to repeat the introduction of production lines up to 600 or more. Sausage is popular with its market and conditions of the actual situation, the flexible packaging industry in China missed the opportunity at that time, but as a high-temperature meat products, sausage is no longer the direction of future development. The sausage casing flexible class of low-temperature meat products, salt cured products with high moisture will develop. Various man-made fiber casing, high barrier composite casing, heat shrinkable casing materials such as flexible packaging category will have great development potential.

  • Other plastics emerged in the prewar period, though some wouldn't come into widespread use until after the war.

    By 1936, American, British, and German companies were producing "polymethyl methacrylate" (PMMA), better known as "acrylic."  Although acrylics are now well-known for the use in paints and synthetic fibers, such as "fake furs," in their bulk form they are actually very hard and more transparent than glass, and are sold as glass replacements under trade names such as "plexiglas" and "lucite."  Plexiglas was used to build aircraft canopies during the war, and it is also now used as a marble replacement for countertops.

    Another important plastic, polyethylene (sometimes known as "polythene") was discovered in 1933 by Reginald Gibson and Eric Fawcett at the British industrial giant Imperial Chemical Industries (ICI).  This material evolved into two forms, low density polyethylene (LDPE) and high density polyethylene (HDPE).

    Polyethylene is cheap, flexible, durable, and chemically resistant.  LDPE is used to make films and packaging materials, including plastic bags, while HDPE is used more often to make containers, plumbing, and automotive fittings.  While PE has low resistance to chemical attack, it was found later that a PE container could be made much more robust by exposing it to fluorine gas, which modified the surface layer of the container into the much tougher "polyfluoroethylene."

    Polyethylene would lead, after the war, to another material, "polypropylene" (PP), which was discovered in the early 1950s.  It is common in modern science and technology that the growth of the general body of knowledge can lead to the same inventions in different places at about the same time, but polypropylene was an extreme case of this phenomenon, being separately invented about nine times.  It was a patent attorney's dream scenario, and litigation wasn't resolved until 1989.

    Polypropylene managed to survive the legal process, and two American chemists working for Phillips Petroleum of the Netherlands, Paul Hogan and Robert Banks, are now generally credited as the "official" inventors of the material.  Polypropylene is similar to its ancestor, polyethylene, and shares polyethylene's low cost, but it is much more robust.  It is used in everything from plastic bottles to carpets to plastic furniture, and is very heavily used in automobiles.

    Polyurethane was invented by Friedrich Bayer & Company of Germany in 1937.  It would come into use, after the war, in blown form for mattresses, furniture padding, and thermal insulation.  It is also used in non-blown form for sports wear such as "lycra."

    In 1939, I.G. Farben Industrie of Germany filed a patent for "polyepoxide" or "epoxy."  Epoxies are a class of thermoset plastics that form cross-links and "cure" when a catalyzing agent, or "hardener," is added.  After the war, they would come into wide use for coatings, "super glues," and composite materials.

    Composites using epoxy as a matrix include "fiberglass," where the structural element is glass fiber, and "carbon-epoxy composites," in which the structural element is carbon fiber.  Fiberglass is now often used to build sport boats, and carbon-epoxy composites are an increasingly important structural element in aircraft, as they are lightweight, strong, and heat-resistant.

    Two chemists named Rex Whinfield and James Dickson, working at a small English company with the quaint name of the "Calico Printer's Association" in Manchester, developed "polyethylene terephthalate" (PET or PETE) in 1941.  It would be used for synthetic fibers in the postwar era, with names such as "polyester," "dacron," and "terylene."

    PET is more impermeable than other low-cost plastics and so is a popular material for making bottles for Coke and other "fizzy drinks," since carbonation tends to attack other plastics, and for acidic drinks such as fruit or vegetable juices.  PET is also strong and abrasion resistant, and is used for making mechanical parts, food trays, and other items that have to endure abuse. PET films, trade-named "mylar," are used to make recording tape.

    One of the most impressive plastics used in the war, and a top secret, was "polytetrafluoroethylene" (PTFE), better known as "teflon," which could be deposited on metal surfaces as a scratchproof and corrosion-resistant, low-friction protective coating.  The polyfluoroethylene surface layer created by exposing a polyethylene container to fluorine gas is very similar to teflon.

    A Du Pont chemist name Roy Plunkett discovered teflon by accident in 1938.  During the war, it was used in gaseous-diffusion processes to refine uranium for the atomic bomb, as the process was highly corrosive.  By the early 1960s, teflon "non-stick" frying pans were a hot consumer item.

    Teflon was later used to synthesize the miracle fabric "GoreTex," which can be used to build raingear that in principle "breathes" to keep the wearer's moisture from building up.  GoreTex is also used for surgical implants; teflon strand is used to make dental floss; and teflon mixed with fluorine compounds is used to make "decoy" flares dropped by aircraft to distract heat-seeking missiles.

    After the war, the new plastics that had been developed entered the consumer mainstream in a flood.  New manufacturing was developed, using various forming, molding, casting, and extrusion processes, to churn out plastic products in vast quantities.  American consumers enthusiastically adopted the endless range of colorful, cheap, and durable plastic gimmicks being produced for new suburban home life.

    One of the most visible parts of this plastics invasion was Earl Tupper's "tupperware," a complete line of sealable polyethylene food containers that Tupper cleverly promoted through a network of housewives who sold Tupperware as a means of bringing in some money.  The Tupperware line of products was well thought out and highly effective, greatly reducing spoilage of foods in storage.  Thin-film "plastic wrap" that could be purchased in rolls also helped keep food fresh.

    Another prominent element in 1950s homes was "formica," a plastic laminate that was used to surface furniture and cabinetry.  Formica was durable and attractive.  It was particularly useful in kitchens, as it did not absorb, and could be easily cleaned of stains from food preparation, such as blood or grease.  With formica, a very attractive and well-built table could be built using low-cost and lightweight plywood with formica covering, rather than expensive and heavy hardwoods like oak or mahogany.

    Composite materials like fiberglass came into use for building boats and, in some cases, cars.  Polyurethane foam was used to fill mattresses, and styrofoam was used to line ice coolers and make float toys.

    Plastics continue to be improved.  General Electric introduced "lexan," a high-impact "polycarbonate" plastic, in the 1970s.  Du Pont developed "kevlar," an extremely strong synthetic fiber that was best-known for its use in bullet-proof vests and combat helmets.  Kevlar was so remarkable that Du Pont officials actually had to release statements to deny rumors that the company had received the recipe for it from space aliens.

    One of the most potentially important new developments in plastics is circuits made out of plastics called conductive polymers.  Electronic circuitry fabricated using plastics or other materials that could be simply printed on a substrate could be incredibly cheap, opening the door to throwaway electronic devices that would cost pennies, or to applications hardly dreamed of now.

    So far, electronic devices made with such materials have not been acceptable for production but, in 2001, prototypes of flat-panel displays based on such technologies were being publicly demonstrated, with predictions of commercial introduction in two or three years.

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