Development and promotion measures of the hottest

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The development and promotion measures of green packaging materials (Part 2)


1. Formulating the development plan of green packaging materials

the development of green packaging materials involves many high and new technologies. It has been several years since the industrial developed countries have studied fully biodegradable plastics, but so far there are not many real industrialized products, which involves many problems of experimental research and industrial production of material testing machines. The development of green packaging materials is not only a matter of the packaging industry, but also requires the cooperation of the whole industry; Not only industrial enterprises, but also scientific research institutes and colleges and universities. Therefore, a 5-10-year development plan for green packaging materials should be formulated, and the main research and development projects and objectives should be put forward, such as high-performance and low-cost pulp molded disposable tableware and packaging products, honeycomb cardboard boxes and production equipment that replace wooden boxes, plant fiber cushioning packaging products, fully biodegradable plastics, edible packaging materials, high-strength thin-walled lightweight glass bottles, The high-quality recycling technology of waste packaging, especially the high-quality recycling technology of waste plastics, the greening technology of waste plastics, and the less use of 3 benzene and other organic solvents that will pose a threat to the environment and human health. We should concentrate people and property, organize capable teams, and carry out key research and cooperation in a planned and targeted manner, so that the development of green packaging materials in China ranks in the forefront of the world

2. Formulate and improve the legal system of green packaging

the regulations of green packaging materials should include the environmental standards of green packaging materials, administrative regulations to control the total amount of emissions, and environmental purification technical regulations to prevent and eliminate pollutants discharged into the environment. It should also establish a system for recycling and reuse of used packaging waste, and formulate the recycling goals of packaging materials that must be achieved in 5 and 10 years. Regulations on green packaging materials can also be incorporated into green packaging regulations, such as "packaging waste restriction law" or "packaging law"

In recent decades, developed countries have taken measures and formulated various laws and directives, mainly including the following: first, the use of certain packaging materials is prohibited in the form of legislation. For example, legislation prohibits the use of packaging materials containing lead, mercury and copper; Appliances that cannot be reused; Packaging materials that fail to reach a specific recycling ratio. The second is to establish a storage return system. Many countries stipulate that recyclable containers should be used for alcoholic beverages and soft drinks. Some countries (such as Denmark) require that if they cannot meet this standard, they refuse to import. Third, implement tax incentives or fines. That is, manufacturers that produce and use packaging materials will be given tax exemption, low tax preference or higher tax according to whether the raw materials they produce and package or the packaging they use are safe, or some of the packaging materials that can be recycled, so as to encourage the use of renewable resources. Fourth, advocate appropriate packaging. Excessive packaging leads to a waste of resources and unnecessary industry experience and development trend:> 860 mm; Potential environmental pollution. Some developed countries are advocating appropriate packaging, and have issued some laws and regulations. For example, the United States has made normative restrictions based on the complexity and luxury of commodity packaging in a certain proportion, and heavy fines will be imposed if excessive packaging exceeds the requirements, so as to force manufacturers to simplify packaging, and Japan even put forward the idea of zero packaging

although there is no green packaging law in China, it does not mean that there are no laws and regulations regulating green packaging. As the pollution of packaging to the environment is a part of environmental problems, green packaging is an important aspect of protecting natural resources and preventing environmental pollution. Therefore, it should be regulated by the environmental protection law. The environmental protection law defines the principles of coordination between environmental protection and economic and social development; the principles of prevention first, prevention and control combined, and comprehensive treatment; the principles of polluter payment, user compensation, developer protection, destroyer recovery, and relying on the masses to protect the environment. In addition, the environmental protection law also stipulates the environmental impact assessment system, "three Simultaneities" system, sewage charging system, permit system Basic systems such as the deadline treatment system. As a mandatory means of environmental management, legislative management is an effective measure widely adopted by countries all over the world. In order to protect the smooth operation of the green packaging system, we must establish and improve the legal system, manage the production, circulation and use of packaging through legislation, and promote the development of green packaging with laws and regulations

3. Research and development of environmental protection production and recycling technology

the environmental performance of packaging materials should be evaluated from the whole process of life cycle. In fact, the environmental pollution caused by the paper, plastic, metal and glass packaging currently mainly used in the production process is far greater than that caused by waste, such as the waste liquid discharged from paper packaging in pulping and papermaking, the atmospheric pollution caused by plastic packaging in the refining process of petroleum raw materials, and the physical and mental pollution caused to workers by the noise and smoke generated by metal packaging in the edging and coating processes, The dust, carbon dioxide and z-silicon oxide emitted from glass packaging in the smelting process have caused serious environmental pollution. Therefore, in order to make packaging materials have "green" performance in the whole life cycle, it is necessary to carry out cleaner production. Among the three elements of "clean energy and raw materials", "clean production process" and "clean products", the most important is to develop clean production process technology. Clean production process is "less waste" and "no waste" process. It is necessary to establish a production closed loop so that the materials volatilized or precipitated or leaked in the production process can be recycled through recycling; As raw materials are reused, a closed production process from raw materials input to waste recycling is established to minimize the external discharge of waste. This not only improves the utilization rate of resources, but also fundamentally eliminates the generation of "three wastes", so that the production of packaging industry does not cause harm to the environment. China has formally implemented the "Cleaner Production Promotion Law" since January 1st, 2003, which requires enterprises with toxic and harmful production processes and environmental pollution to conduct cleaner production audits. Therefore, developing cleaner production technology of green packaging materials is very important for the development of green packaging materials

packaging made of single material is easy to recycle, and composite materials with multi-level structure must be easy to separate without hindering reuse. For example, the aluminum beverage can be coated with organic paint on the surface. When it is recycled and melted, the organic paint can be burned, which will not bring difficulties to recycling, and the composite paper plastic packaging is difficult to separate and purify. However, composite materials are widely used in packaging materials, including plastic plastic composite, paper plastic composite, plastic aluminum composite, paper plastic aluminum composite, plastic wood composite and other composite methods. Their biggest advantage in use is that they have a variety of functions, such as a variety of barrier functions, moisture permeability functions and so on, making them high-performance. The economic benefits are very prominent. The biggest disadvantage of composite materials is that it is difficult to recycle, and it is difficult to separate and layer, and if composite materials are mixed with a single material during recycling, the recycling quality of a single material will be damaged, such as aluminum paper plastic composite materials mixed with a single cardboard recycling material, its beating performance will be damaged; If the composite film is mixed into the single plastic film, the recycled products will also be scrapped. Therefore, composite materials can only be used as fuel for recycling, and heat energy can be recovered by incineration in incinerator. At present, to solve the contradiction between the high functionality of composites and environmental performance, the main directions are: ① develop a single high-performance material to replace composites; ② Develop green composite materials that are easy to recycle. Both of them are very difficult to develop

source: Hunan packaging

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