Specific requirements for hygiene and safety of th

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Specific requirements for the health and safety of "liquid food packaging"

with the development of industrialization and the improvement of residents' living standards, more and more milk and beverages have entered residents' families, and the accompanying paper and plastic packaging materials have also gone deeper into people's lives. How to bring convenience to people's lives while ensuring people's health, as a packaging material for milk and beverages, health requirements are also becoming increasingly important

at present, there are three main packaging forms of dairy products and beverages in the market, the first is paper plastic composite packaging, the second is plastic film (three-layer film, five layer film) packaging, and the third is plastic bottle (high-density polyethylene HDPE, polyester PET) packaging. The following mainly discusses paper plastic composite packaging materials for your reference

with the progress of society, the continuous improvement of food safety awareness and environmental protection awareness, as well as the continuous progress of technology, developed countries have put forward higher requirements for this, and our country also has a new plan for social sustainable development. At present, the country has relevant standard requirements for paper plastic composite packaging materials, and the requirements for hygiene are regulated by referring to the requirements of food packaging base paper and polyethylene for food

to ensure that liquid packaging materials meet the requirements of packaging hygiene and reach the international advanced level, the raw materials for processing packaging materials first need to meet the corresponding hygienic standards. There are mainly four kinds of raw materials for paper plastic composites used in dairy packaging. At this time, we can add a sufficient number of supports to the experimental machine; The functions are as follows: 1. Cardboard mainly provides the strength and stiffness of packaging. 2. Polyethylene mainly blocks liquid contents and microorganisms. 3. Aluminum foil is mainly used to block oxygen, light and smell. 4. Ink is mainly used for printing and reproducing the patterns required by customers. Food hygiene and safety have very strict requirements on raw materials to ensure the taste, nutrition and freshness of food. Here are the three main raw materials of paper plastic composite packaging materials, cardboard, ink and polyethylene

1. Base paper for packaging. As the main raw material of packaging materials, paper has strict hygiene and safety requirements for the base paper used for food packaging, although it does not directly contact with liquid food. The requirements for base paper are mainly based on the management measures for domestic food packaging base paper issued in 1990, which requires that the use of base paper should comply with gb11680 hygienic standard for food packaging base paper, such as the requirements for fluorescent agents, dyes, heavy metals, etc. Now, European and American countries require to pass the certification of relevant provisions of FDA, which not only makes corresponding requirements for the finished base paper (for example, microorganisms, pollutants and odors), but also has corresponding requirements and certification for the raw materials, processing equipment and environment of base paper processing, so as to ensure that the processing process of base paper meets the requirements of food packaging. In particular, there are corresponding special requirements for milk packaging paper, such as the strength and moisture of the paperboard to prevent the secondary invasion of bacteria or microorganisms

2. Printing ink. Because the heavy metals and solvents in the ink will migrate inward and outward at the same time, there will be a big safety hazard if they enter the package contents. Now most countries advocate the use of environmental friendly inks, alcohol soluble inks and water-based inks, especially water-based inks, which are increasingly promoted as green environmental friendly inks. However, in some traditional printing, many manufacturers still use solvent based inks, especially toluene or xylene as solvent for printing. These have not been clearly stipulated in our country so far, and many production and processing manufacturers have not been properly managed and supervised. However, in developed countries in Europe and the United States, it has been expressly prohibited in food packaging Overload protection: when the sensor is overloaded, it will automatically stop using benzene solvents. If toluene or xylene penetrates into the skin and enters the human body, it will endanger the human hematopoietic function and nervous system. The requirements for ink, especially for solvent based ink, are mainly from the following aspects

the first is the content of heavy metals. There are no relevant domestic standards for the content of heavy metals in inks. At present, the standards for detecting the content of heavy metals mainly include the content of arsenic and lead specified in the hygienic standard gb11680-89 for base paper for food packaging. The EU safety standards en71-3:1993, en:1997 and astmfa of the United States have strict standards and regulations on the content of heavy metals in inks. Because cadmium, lead, chromium and arsenic will pose serious harm to the human body. Long-term exposure and continuous accumulation in the human body will lead to the decline of human immune function and the mental retardation of infants and young children. The second is the residue of organic volatile matter (VOC), which mainly refers to the residue of organic solvents in solvent based inks in packaging materials. At present, the standard for the detection of VOC content can refer to China's industrial standard intaglio composite plastic film ink (qb/t), which stipulates that the sum of the residues of toluene, xylene, ethyl acetate, acetone and other eight solvents is not more than 30mg/m2. The printing inks for dairy packaging are mainly solvent based inks and water-based inks. In particular, the use of water-based ink should be the main development direction of liquid packaging because its solvent is water, which has no impact on the environment and human health. However, due to its high cost and high requirements for printability, most enterprises still use solvent based printing inks

3. Polyethylene for packaging. The hygienic standard for polyethylene resin for food packaging (GB) is applicable to polyethylene for packaging in China, and there are corresponding requirements for other organics, heavy metals, dyes and other impurities in polyethylene

on the premise that raw materials are guaranteed, the control of production process is also very important. The outer packaging of raw materials should meet health requirements, such as the transportation requirements of raw materials, the storage of raw materials, the requirements for warehouses, the placement standards of raw materials, etc. Next, we need to have workshops suitable for processing food packaging materials. The requirements of processing workshops for air conditioning temperature and humidity, air purification, pressure and sealing of workshops, etc. to ensure a good processing environment, but this requires high investment and operating costs, so many domestic enterprises do not pay full attention to the construction and production process of workshops. The health requirements of operators and the correct operating behavior norms of food processing are also important links of health and safety. We should also establish control measures for the quality of packaging materials, and equip high-performance equipment to meet the requirements of food packaging, so as to ensure good operation. It is also very important to try to avoid the entry of foreign matters, as well as the quality monitoring, recording, sorting and elimination process. The factory should pass the corresponding ISO9000 and ISO14000 certification, and ensure that the ISO system selects the items to be assigned, and the cursor in the curve window turns into a 10 character cursor for effective operation, so as to ensure the health and safety of product quality and effectively avoid unqualified products from entering the market. In short, to ensure the safety and health requirements of liquid packaging, we should have high standards of raw materials, good processing sites, good processing machinery and equipment, employees with good awareness of food hygiene and safety, and good production and processing processes, so as to ensure the health and safety quality of packaging materials

therefore, in the face of fierce market competition, many enterprises do not take corresponding health and safety measures to reduce production costs, just for their own benefit, which will cause serious damage to the environment and people's health. At the same time, there is no corresponding sound health and safety access requirements in the industry, and there is a lack of supervision and control in terms of multiple fiber orientations, ignoring safety and health. Therefore, we should vigorously publicize, let consumers have the right to know, and strengthen supervision to promote the improvement of product health quality

source: global color box industry

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