In the flexible composite packaging materials, the number used in food and pharmaceutical packaging accounts for a large proportion. This is because of its durability, hygiene and safety of food, drugs play an important role. In recent years, the global epidemic of the disease continues to endanger human safety, many new emerging epidemic germs. Such as Ebola in Africa, Asia and worldwide bird flu, foot and mouth disease in India, Southeast Asia, such as dengue fever, a serious threat to human security, which is a reminder that, in addition to the security environment, millions of consumers every day eat all the food, medicine, must be used with good protection against viruses bacteria contamination contents functional packaging materials, not naked sales. In addition, food flexible composite packaging materials, not only to protect the health and safety of the contents, but can not because of their own decontamination of food, medicines, to increase the unsanitary, safety factors of the contents, it is necessary to control the food soft composite packaging materials health and safety performance.
The importance of flexible composite packaging materials health food safety
For humans, the health and safety are the most important, since ancient times, the pursuit of human health and longevity have done a lot of work, including pharmaceuticals, medical, environmental, health or biochemical, genetic research. Now people's minds is: healthy living is healthy living. If the body healthy, then the material is rich, more money, status, no matter how high, it will not live very natural, very happy, very comfortable. Of course, the security environment is indispensable if the terrorist attacks, hit traffic accidents, environmental pollution, fires earthquakes, healthy body and then inevitably suffer. Therefore, the safety of human life, the environment is also very important. Now the whole world popular "people-oriented, enjoy life" concept. The progress of mankind, has been developed from the past "survival" to today's "life" on the last half of the century, the world's material wealth is rich enough, most people only eat, clothe the survival of the state live under, but since the 1960s, the rapid development of the world economy, are in abundance after material wealth, not simply the pursuit of "survival", but the pursuit of "Life", in addition to feed and clothe, but also requires to enjoy life, including mental cultural life, healthy and happy life, safe leisure life, peaceful and harmonious life. In this case, we provide food to consumers of soft package bag material, you can not have any unsanitary, unsafe potential hazards, it's health and safety must be fully protected. But now the situation is not satisfactory, there are a lot of companies do not understand the situation, some companies are not going to understand importance.
Hygiene standards of food flexible composite packaging materials
Our food and packaging materials already have laws, regulations and appropriate sanitation standards, laws and regulations there are two: First, the "People's Republic of China Food Sanitation Law," two "plastic food products and raw materials management approach." Food Sanitation Law was promulgated by the State Council,
The management approach is issued by the Ministry of Health. Both are mandatory law, in violation of its provisions should bear legal responsibility. Contents of the Food Sanitation tube much broader than the management approach is comprehensive legal, while the latter is a professional, refers only to plastic products and raw materials, limit the scope of management in a variety of plastic food contact utensils, containers, production pipes, synthetic resins and plastic conveyor belt made of packaging material used and its auxiliaries. Refers to the so-called plastic utensils spoon, spoons, chopsticks and other short-term repeated use in contact with food but to plastics, so-called container refers to barrels, bottles, pots, cups and other food products containing plastics, so-called production pipeline refers to food processing the material, in particular a liquid food or beverage to flow through the conduit, the tank should also be included, including the so-called conveyor means transporting the food materials to the processing equipment and food will be transported to packaging equipment to the carrier, and packaging refers to a monolithic or composite material bottles, buckets, trays, roll film and bags. Which include cling film roll film, lidding film and bag film. Manufacture of composite flexible packaging materials, food manufacturers should strictly enforce all of this management approach.
On health standards, raw materials and products of these two sub-areas. In terms of health standards of raw materials, there GB9691 "food hygiene standards polyethylene resin", GB9692 "Polystyrene food hygiene standards" and GB9693 "food hygiene standards polypropylene resin." In these three resin standard, the largest amount of polyethylene and polypropylene, polystyrene minimum amount, and will be less and less. Incidentally, in addition to these three resins foreign standards, as well as polyester (PET), sanitation standard nylon (PA) and other resins. In the health standards of these raw materials, heavy metals, evaporation residue, potassium permanganate consumption, bleaching indicators and other regulations, and the heavy metal content of foreign indicators, as well as the aldehyde content, cadmium, arsenic, mercury, phenols and amines content and so forth.
In terms of moldings health standards, GB9687 "polyethylene products used for food packaging hygiene standards", GB9688 "food packaging polypropylene moldings health standards", GB9689 "polystyrene products used for food packaging hygiene standards" and GB9683 "composite food packaging hygiene standards." The first three moldings health standards projects, evaporation residue, potassium permanganate consumption, heavy metal content of specific indicators, while the fourth "composite food packaging hygiene standards", and added diaminomethylbenzene content shall not be greater than 0.004mg / L indicators. Some people may ask, since there are health indicators of a resin material, why moldings health indicators have led it from the plastic processing and the specific requirements of products to answer. Plastic processing must be heated off this road, and the synthetic resin and plastic when heated there cracking, oxidation, degradation, deterioration of the problem. Therefore, the resin is processed into plastic containers or films, we should join antioxidants, heat stabilizer additives, the film also requires some static, anti-condensation, high and smooth, so also added antistatic agent, fogging agent, slip agent additives opening. All of these additives, are the first to go through GBl5139 "food safety toxicology evaluation procedures," the test for detection, in order to prove the use of non-toxic, but there is also a limit on the amount added. So, in the article, which can be extracted out of the low molecular weight substances can be oxidized evaporation residue or deterioration of things, that is, consumption of potassium permanganate, shall not exceed the prescribed amount, more than can not be used. Therefore, the moldings should have the appropriate health standards, and its purpose is to prevent the indiscriminate use and abuse of additive material is to better protect the direct contact with food packaging and a high degree of health and safety performance.
Above, the first six of the seven criteria, only the provisions of the resin material to the health standards of its products, the health standards without composite packaging materials. Composite materials are more complex than the resin and resin product, as it go through a printing ink, composite adhesive, in order to make the packaging material. Therefore, China has formulated the GB9683 "health standard composite food packaging bags," which contains the raw materials and products, in addition to health programs, but also increased the content diaminomethylbenzene provisions shall not be greater than 0.004mg / L, which is due in food packaging materials, adhesives trace substances harmful to health, will also affect the performance of the entire health system, but also one of the diaminotoluene is a carcinogen, must be strictly controlled, so provision can not be greater than 0.004mg / L. According to this data to the converter, which is approximately the contents shall not exceed four billionths of this indicator.
In fact, in addition to the standards of hygiene items and indicators, the country's composite packaging material standards, there is a residual solvent must not be greater than 10mg / M2 provisions, such as GB10004 and GB10005, recently increased the amount of residual toluene which shall not exceed 3mg / M2 content. This is because in recent years, all of the odor and potential toxicity of packaging materials, more stringent requirements are, therefore, water-based inks and adhesives, alcohol inks and adhesives, and solvent-free adhesives and other new products developed rapidly, the aim is to protect the complex material has a higher purity, health and safety performance. In order to control the health and safety of food containers and packaging materials, our country has developed a GB9685 "food containers and packaging materials additives health standards" in the health standards of this aid, the provisions of the additives, solvents, adhesives, and other 17 big category, 58 kinds of names and maximum usage of specific substances, like FDA21CFR & 175.105 and Japan adhesive "self rule", lists can be used in food packaging auxiliary material name list and the highest amount, in addition to not allowed to use.
In composite packaging materials, in addition to resins, additives, there are a wide range of inks and adhesives used, there is no separate its sanitary standards, there is no unified national product standards, only individual producers "enterprise standard" this is the need to attract attention and seize the experts do.
