The hottest printing quality food packaging pollut

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Printing quality: food packaging pollution source

in 2005, a food factory in Dingxi County, Gansu Province developed and produced a new product of potato chips. The product was tested before it was put on the market, but it smelled a strange smell, and many tests did not find out the problem. The local geological inspection department found that these strange smells came from the benzene left in the composite packaging bag. Through the inspection of the packaging samples, it was found that the benzene content seriously exceeded the standard. The secondary pollution of food caused by food packaging has become increasingly prominent, and the potential safety hazards of food packaging have become the focus of the government and society. On December 19, the information disclosed at the "national food packaging safety technology seminar" jointly sponsored by China Packaging Corporation, the national packaging product quality supervision and Inspection Center (Chengdu) and Chengdu quality inspection institute reflected that the quality of food packaging printing has become one of the main reasons for food secondary pollution

discovery: fatal diseases can come from food bags

according to Ye Yuanming of the national packaging product quality supervision and Inspection Center (Chengdu), the random inspection results of food packaging (film) released by the AQSIQ at the end of September last year showed that the unqualified rate of special food packaging bags was as high as 15%. Entrusted by Lanzhou Bureau of quality supervision this year, nine groups of composite food packaging bags were inspected. Among them, four groups of food packaging solvent residues exceeded the standard, with a failure rate of 46%, and the most serious exceeded the standard by more than 10 times. In packaging and printing, ink and other substances account for 20%. Food packaging and printing pollution has become one of the main causes of food secondary pollution

it is understood that most food soft packaging uses gravure printing technology. Due to the particularity of food packaging materials and the special requirements of our website for food packaging, if we use poor quality ink solvent ink when printing, a large number of volatile solvents will be produced: toluene and xylene. Although the vast majority of some harmful substances are volatilized during the manufacturing process, a small amount of solvent will remain between the composite membranes, and with the passage of time, it will penetrate into the food from the surface of the membrane, causing it to deteriorate and taste. These residual benzene homologues will cause great harm to human body, and the greatest harm is that they are easy to cause diseases such as cancer, especially blood system diseases

traceability: standard lag indulges benzene pollution

Ma Junhui, senior engineer of the national packaging quality supervision and Inspection Center (Chengdu), admitted that China's food packaging standards are seriously lagging behind. Among the 12 national mandatory standards for food currently implemented, there are only rigid provisions on the hygiene standards and packaging materials of food packaging, and there is a lack of relevant mandatory standards for the printing quality of food packaging. The items regularly checked by quality inspection institutions at all levels are based on the 1992 national standard for health quality, which only limits some physical and chemical indicators and health indicators of food packaging bags

people in the printing industry said that because the ink itself in the ink system currently used in China contains benzene, it can only be diluted with a mixed solvent containing toluene, which is more intuitive, simple and safe to operate. At present, the purity and price of toluene in the market vary greatly due to different extraction sources. If enterprises use cheap toluene with low purity when producing food packaging bags, Then the problem of benzene residue will be more serious. However, the country will reduce the crude steel production capacity by about 13.27% within five years after the merger, and benzene is not prohibited in packaging materials. In other words, China allows the use of food packaging materials containing trace amounts of benzene. Although there are limited regulations, in fact, it is difficult to control this amount. In particular, the cost of benzene testing is quite high. A packaging test costs more than a thousand yuan. Which enterprise will take the initiative to detect how much benzene is contained in packaging materials? In addition, packaging material enterprises will not ask what products their products are used in. Therefore, benzene exceeding the standard caused by printing quality in food packaging products is often ignored by manufacturers and consumers

method: work hard on the standard

it is the benzene in food packaging that exceeds the standard. Therefore, the general guidelines for green food packaging (hereinafter referred to as the guidelines) formulated and proposed to be issued recently clearly stipulates that expanded polystyrene, polyurethane and other products are not allowed to be used in plastic products. According to the regulations of the code, as long as a few MV products are used in the future, the surface of the package shall not be waxed or oiled; The identification on the carton must be water-soluble ink; Metal packaging and glass products should not use sealing materials and internal coatings that cause harm to human body and the environment; Expanded polystyrene, polyurethane and other products are not allowed for plastic products; The outer packaging should have explicit instructions for the use of materials, instructions for reuse and recycling, and green food signs. The ink printed on the outer packaging or the adhesive used for labeling should be non-toxic and should not be in direct contact with food

dongjinshi of China Packaging Resources Comprehensive Utilization Committee said: "There are now more than ten kinds of environmentally friendly solvents, such as acetoacetate and butyl acetate, which can directly replace benzene solvents. In addition, the more environmentally friendly water-based solvent water-based paint developed now is to use water as a solvent for printing. In addition, there are some paints such as UV ink, and some are to use soybean oil as a solvent for printing, which is not harmful to human body and the environment." Caofeu, director of the national certification and Accreditation Administration, said that the compulsory certification standard for food packaging materials will be drafted from this year. This standard is expected to be officially implemented next year. The standard will require all food packaging material enterprises to implement this compulsory standard. Enterprises are required to have strict regulations on the safety of human body in the process of raw material procurement, production process, and product use, including the safety of the used waste to the environment. As long as one aspect fails to meet the requirements, production is not allowed

link: different definitions of packaging

China's definition of packaging: packaging is the general name of containers, materials and accessories used according to certain technical methods to protect products in the process of circulation, facilitate storage and transportation, and promote sales It also refers to the operation activities of applying certain technical methods in the process of adopting containers, materials and auxiliary objects to achieve the above purpose

the definition of packaging in the United States: packaging is the use of appropriate materials and containers, and the application of technology, so that it can safely reach the destination of the product, that is, at every stage of the product transportation process, no matter how the external impact, it can protect its contents without affecting the value of the product

Japanese definition of packaging: packaging refers to the technology and state of using appropriate materials, containers, etc. to protect the value and original state of goods during transportation, custody, transaction or use

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