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2022-10-24
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Environmental protection - green packaging

generally, green packaging should have five aspects:

first, implement package reduction Under the condition of meeting the functions of protection, convenience and sales, the amount of packaging should be the least

second, the packaging should be easy to reuse or recycle Through the production of recycled products, incineration and utilization of heat energy, composting to improve soil and other measures to achieve the purpose of reuse

third, packaging waste can be degraded It will not form permanent garbage in the end, so as to improve the soil Reduce, reuse, recycle and degradable are the universally recognized 3r1d principles for developing green packaging

fourth, packaging materials should be non-toxic and harmless to human body and organisms Packaging materials should not contain toxic elements, bacteria, heavy metals; Or these contents should be controlled below the relevant standards

fifthly, the whole life process of packaging products from raw material collection, material processing, product manufacturing, product use, waste recycling to its final treatment should not cause public hazards to human body and environment

the source of green packaging

green packaging originated from our common future issued by the United Nations Commission on environment and development in 1987. By June 1992, the United Nations Conference on environment and development had adopted the Rio Declaration on environment and development and Agenda 21, which immediately set off a green wave around the world with the protection of the ecological environment as the core. Some people call "green package" environmental friendly package or ecological package

green packaging should be: harmless to the ecological environment and human health, recyclable and reusable, and the current freight from Indonesia to southern China port is 2.5 ⑶ 5 dollars/ton (70000 tons); (4) USD/ton (50.6 million tons) recycled packaging that can promote the sustainable development of the national economy. In other words, the whole process of packaging products from raw material selection, product manufacturing, use, recycling and waste should meet the requirements of ecological environment protection. It includes the requirements of ecological environment protection, such as saving resources, energy, reduction, avoiding waste generation, easy recycling, recycling, incineration or degradation. With the progress of science and technology, the development of green packaging will have new connotations

classification of green packaging

green packaging is divided into Grade A and AA. A-level green packaging refers to the appropriate packaging with toxic substances within the specified limit that wastes can be recycled, recycled or degraded. AA grade green packaging refers to the appropriate packaging that wastes can be recycled, recycled or degraded, and does not cause public hazards to human body and the environment in the whole life cycle of products, and contains toxic substances within the specified limit. The above classification mainly considers that the problem of waste after packaging should be solved first. This is the pollution in the process of environmental protection in countries all over the world. This is a problem that needs to be solved in the past, now and in the future. Life cycle analysis (LCA) is not only a method to comprehensively evaluate the environmental performance of packaging, but also a method to compare the environmental performance of packaging materials, but there should be priority in solving problems

green marking and regulations of packaging

green packaging marking

in 1975, the world's first "green" marking of green packaging was published in Germany. The "green dot" logo of the world's first green packaging is a circular pattern composed of green arrows and white arrows, and the text above is composed of German dergneponkt, which means "green dot"

The double color arrow of the green dot indicates that the product or package is green and can be recycled, meeting the requirements of ecological balance and environmental protection. In 1977, the German government launched the "Blue Angel" green environmental protection logo, granting products with green environmental protection characteristics, including packaging. The "Blue Angel" logo is composed of an inner ring and an outer ring. The inner ring is a blue wreath composed of the laurel of the United Nations. In the middle is a blue little angel with arms embracing the earth, indicating that people embrace the earth. Above the outer ring is the German circular logo, and below the outer ring is the name of the German product category

after the use of "environmental labels" in Germany, many countries have also begun to implement environmental labels for product packaging. For example, Canada's "maple leaf logo", Japan's "love the earth", the United States's "nature friendly" and certificate system, China's "environmental logo", the European Community's "flower of Europe", Denmark, Finland, Sweden, Norway and other Nordic countries' "white swan", Singapore's "green logo", New Zealand's "environmental choice", Portugal's "ecological products", etc

in June, 1993, according to the speed specified in gb/t228 (2) 002 standard, the experimental machine was used to stretch the standard tensile specimen. The international organization for standardization established the "Technical Committee on environmental management" (TC207), and formulated a set of environmental management standards like quality management. So far, TC207 Committee has formulated some standards (such as ISO14000) and issued them for implementation. The American business community and packaging industry have implemented ISO14000 standards one after another, and formulated the "environmental report card" which has popularized knowledge, so as to assess the life cycle of packaging and improve the environmental management system of packaging enterprises. Japan established the environmental audit and certification organization in October, 1994. The European community put forward the European environmental management and environmental audit in March, 1993, and implemented it in April, 1995. Some Chinese enterprises have also begun to implement ISO14000 series standards, but there is still a certain gap compared with foreign countries

green packaging regulations

in 1981, in view of the adverse effects of the increase in empty bottles of beverage containers, the Danish government first introduced the packaging container recycling law. The implementation of this law has affected the agreement on the free movement of goods within the European Community and the interests of Member States. So a "Danish bottle" lawsuit went to the European court. In 1988, the European Court of Justice awarded Denmark victory. In order to alleviate the dispute, the European community held the Dublin conference in June 1990, put forward the idea of "fully protecting the environment" and formulated the waste transportation law, which stipulates that packaging waste cannot be transported to other countries, and all countries should bear the burden of waste

in December 1994, the European Community issued the packaging and Packaging Waste Directive. After the Dublin declaration, Western European countries have formulated relevant laws and regulations. Echoing Europe, the United States, Canada, Japan, Singapore, South Korea, Hong Kong, the Philippines, Brazil and other countries and regions have also formulated packaging laws and regulations

Since 1979, China has promulgated four special laws and eight resource laws, including the environmental protection law of the people's Republic of China, the solid waste prevention and control law, the water pollution prevention and control law, and the air pollution prevention and control law. More than 30 environmental protection regulations have expressly stipulated the management provisions of packaging waste. In 1984, the state established the environmental protection system and began to implement the environmental protection labeling system. In 1998, the provincial green packaging Association was established$ Page break $

main means of green packaging

first, start from the aspect of materials

1 Degradable plastics

at present, the internationally popular "new degradable plastics" have the excellent quality of self decomposition and disappearance after being discarded, and do not pollute the environment

Germany invented a kind of packaging cup made of starch and insoluble in liquid, which can hold dairy products. This invention saves Germany 4billion plastic bottles, which are easy to decompose after being discarded. The United States has developed a plastic bag with starch and synthetic fiber as raw materials, which can be decomposed into water and carbon dioxide in nature. Countries such as the Netherlands and Italy have legislated that some plastic packaging materials must use degradable plastics, and packaging harmful to the environment must not be put on the market

2. Paper packaging

because paper products can be recycled after packaging, a small amount of waste can be naturally decomposed in the natural environment, and there is no adverse impact on the natural environment, so it is recognized that paper, paperboard and paper products are green products in the world, which meet the requirements of environmental protection and can play a positive role in replacing the white pollution caused by plastics. At present, the paper packaging materials being studied and developed at home and abroad include: paper packaging film, disposable paper product containers, paper packaging materials developed by using natural resources, edible paper products, etc

at present, many enterprises have considered using medium-sized and heavy corrugated boxes or white board boxes for packaging, and using various moisture-proof and fresh-keeping paper instead of plastic film for packaging. More than half of plastic packaging in the United States has been replaced by new paper packaging. China's Shanghai Jiabao packaging company introduced advanced equipment to develop pulp models. This product is made of natural plant fibers, such as reed pulp, bagasse pulp, wood pulp and other raw materials, through scientific formula and molding. This pulp model is the most ideal product to replace foam tableware

3. Glass packaging

if it does not contain metals, ceramics and other substances, glass can be almost completely recycled. There is a maximum limit for the content of glass fragments of other colors in a certain color of glass: ① the maximum content of glass of other colors in green glass is not more than 15%. ② The maximum content of other colors in white glass shall not exceed 3%, of which the maximum content of brown glass shall not exceed 2%, and the maximum content of green glass shall not exceed 1%. ③ The maximum content of other colored glasses in brown glass shall not exceed 8%. Therefore, it is necessary to strengthen the classified collection of glass with different colors. In some developed countries, white glass and colored glass are collected in different containers. Because glass packaging has the advantages of strong visibility and easy recycling, it has become the main container of traditional packaging of beverages and other products

4. Bamboo packaging

the layout and packaging of bamboo in the field of cathode materials in China is non-toxic, pollution-free and easy to recycle. Bamboo packaging refers to bamboo plywood boxes, silk bound bamboo crates, etc. China is a country lacking in wood in the world, but the total area of bamboo forests and the reserve of bamboo resources in China rank first and second in the world respectively. Bamboo packaging with strong traditional cultural flavor in China has been favored by Europe, America, Japan and other countries

second, from the aspects of reusability, regeneration, edible and degradability,

the reuse of packaging, such as promoting the use of glass bottles for packaging beer, beverages, soy sauce, vinegar, etc., for repeated use. Sweden and other countries implement the reuse of PET beverage bottles and PC milk bottles for more than 20 times. Wellman company in the Netherlands and holmson company in the United States recycle 100% of PET containers. For example, after recycling, polyester bottles can be regenerated in two ways. The physical method refers to the direct and thorough purification and crushing, without any pollutant residue, and the treated plastic can be directly used for recycling packaging containers; The chemical method refers to that after crushing and washing the recycled PET, the depolymerizer methanol, ethylene glycol or diethylene glycol is used to depolymerize the pet completely or partially into monomers or oligomers under the action of alkaline catalyst, and then the monomers or oligomers are re polymerized into regenerated PET resin packaging materials after purification

1. Edible

for decades, the glutinous rice paper used in candy packaging and the corn baking packaging cup used to pack ice cream are typical edible packaging. The more mature synthetic edible packaging film is the industrialized pullulan resin in the 1970s. It is tasteless, odorless, amorphous, amorphous white powder, and is a kind of non-ionic, non reducing stability

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