The use of green packaging and nanotechnology

"Green Packaging" and "Green Packaging Project" are new concepts put forward in recent years when environmental pollution around the world is becoming increasingly serious. As we all know, packaging not only provides essential conditions for human health and social progress, but also plays an important role in protecting products, accelerating logistics, facilitating use, and promoting sales. However, packaging also consumes a large amount of material and creates exhaust gas problems that cause headaches in the world. With the growth of economy and consumption levels, products are facing a dangerous situation where there is no land to be buried, and at the same time, they are also causing harm to the environment. Therefore, the protection of the ecological environment has become a hot issue for the packaging industry in all countries. In the 1990s, new nanotechnology was developed in the world's high-tech field. Nano-packaging changed people’s traditional technologies, used atoms and molecules to give them high-tech properties, and paid attention to thrifty resources, which greatly benefited Human society. Nanotechnology has become the latest in comprehensive science and technology in the last decade.

First, the rise of green packaging

In June 1992, at the United Nations “World Environment and Development” conference held in Rio de Janeiro, Brazil, 183 countries and more than 70 international organizations unanimously adopted international environmental protection guidelines for long-term development and needs, and formally determined that “sustainable development” is Themes of human society. People are becoming more and more aware of the destructive effects of the emission of packaging waste materials on resources and the environment, and they are required to reduce the emissions of solid waste materials. They must fully and effectively recycle them and develop new types of materials for the benefit of humanity.

The origin of green packaging originated from the proliferation of white pollution. Strictly speaking, it was mainly due to the increase in the amount of packaged waste products brought about by the increasing fear of the increase in packaging waste and packaging products as a result of increasing packaging materials and packaging products. People ignore the environmental factors in the production and management activities, and ignore the intractable plastic products. The recycled packaging products are not recycled, causing great pollution to the environment.

The most important thing in the implementation of green projects is to educate green projects, constantly raise people's awareness of the environment and benefit the ideological realm of generations. As long as all humankind makes unremitting efforts, white pollution will certainly be eliminated. Our green revolution will surely have great results, and a certain fresh green world will soon come.

Second, the main means of green packaging

The development of modern green packaging technology is first of all the development of green packaging materials. Therefore, research on green packaging technology must first of all study green packaging materials. The classification of green packaging materials includes: 1 Recyclable materials that can be recycled. Including paper, cardboard, paper pulp molding materials, metal materials, glass, biodegradable polymer materials. 2 Naturally weathered materials that return to nature. Including paper products, biodegradable materials and bio-synthetic materials, practical materials and so on. 3 Incineration of recovered energy does not pollute atmospheric materials. Including some of the linear polymer materials that can not be recycled, mesh polymer materials, and some composite materials. 4 After recycling waste materials, they are mainly used for the production of recycled paper and various uses of paperboard and pulp film plastic products. Therefore, the use of the waste in life has become increasingly concerned about the hazards of waste materials.

Third, actively develop green packaging

In recent years, the rapid development of the market economy has driven the demand for products to become higher and higher, and the packaging requirements in transportation and sales have also become higher and higher, especially the demands of consumers are getting higher and higher. Export packaging materials can only be allowed to be imported into the importing country if they meet the requirements of the importing country, and the customs of the importing country will not release. Many countries in the form of laws must not use straw for the packaging of goods imported by the importing country, or they will be burned. One of these measures is to avoid the use of toxic materials. The pigments, fuels, paints, etc. used on packaging containers or labels should be made of materials that do not contain heavy metals. As binders for bonding materials, they should be easily decomposed during separation, except for non-toxic or toxic components. Second, use recycled materials whenever possible. At present, recycled recycling materials used in the world are mostly recycled paper, recycled paper cartons made after recycling and utilization, and pulp, bee pulp cardboard and paper tubes. The third is to actively develop plant packaging materials. Plants can basically continue to spare no effort to reproduce, and the large-scale use of plants will not harm the environment and ecological balance and the maintenance of resources, and are favored by the international market. The fourth is to use a single packaging material, so that the material can be disassembled without using special tools, and the time for recovery and separation can also be saved, and the difficulties of recovery and separation due to the use of an adhesion method can be avoided.

At present, the international green packaging system has become one of the main contents of the green standards set by developed countries. The green packaging system is to require imported goods to save energy for recycling, recycling and use, easy to decompose, do not pollute the environment, protect environmental resources and consumers' health.

Green packaging as a complete and independent green system should meet the following requirements: First, there is a set of green program design programs, including the project content, factual solutions, and process routes for each subsystem in the entire system; and second, it has a complete green set. The production equipment and the green guarantee encircling system; The third is to have a complete green management system and plan, including all aspects of management and monitoring measures. The “green revolution” of food packaging is an international event. It will be a common pursuit of human life in the future and a common theme and important feature of the future development of the global food industry. And the “green revolution” in this world-wide food packaging industry must adopt ISO.

It can be foreseen that the "green revolution" will surely be an important theme of the global packaging industry in the new century, and it will also be a distinctive feature of the development of the packaging industry in the new century. The 21st century will be a green world and will also be a green packaging world. China's packaging industry must catch up with the world's "green wave" to meet the challenges of the new century and take the initiative in the world's "green revolution" market.

Fourth, the use of nanotechnology

Nanoscience and technology is a science and technology based on many modern advanced science and technology. It is a combination of modern science and modern technology. Nanoscience and technology will introduce a series of new science and technology, and the application of nanotechnology in packaging will also be Is a big aspect, a breakthrough in the biological aspects of the application of nano aspects in the packaging aspect, nanotechnology can change the product design and manufacturing methods, achieve a leap in production methods. As a result, nanotechnology will have a profound impact on humanity and even change human thinking and lifestyle.

The so-called nano-packaging material is a nano-composite packaging material made of a single crystal or multi-crystal material with a crystal grain size of 1-1000 nm and other packaging materials. Since the nano-sized crystal grains are finer than the conventional crystal grains, the grain boundary thereof is called. The number of atoms is greater than the number of atoms inside the grains, forming a high concentration of grain boundaries, thus giving nanomaterials the performance of many different conventional materials, such as high strength, high hardness, high resistivity, low thermal conductivity, low elastic modulus , low density and so on. New packaging technology requirements rely on structural design, but also use high-tech materials, and with the increase in demand for special functions of packaging, such as explosion-proof packaging, anti-electromagnetic packaging, camouflage packaging, high-impedance packaging, stealth packaging, anti-radar packaging and other requirements The emergence of nano-packaging technology has promoted the development of nano-packaging technology. Nano-composite packaging materials made of nano-materials have become a type of high-tech material we need. It not only greatly improves the performance of raw materials and gives new features, but also expands The scope of application of raw materials and good prospects also save scarce resources. The nano-composite polymer conductive packaging materials (for anti-static packaging, anti-electromagnetic packaging, etc.), not only significantly increased the conductivity, but also a variety of appearance color changes, and other physical and chemical properties greatly enhanced, and nano-composite The high-grade film of the material has good transparency and it is a new product that the packaging industry needs. Nanotechnology is used to nano-synthesize packaging products and nano-improve them to new features such as nano-structure, size, etc. In recent years, polymer nano-composites, such as nano-composite plastic packaging materials, have been the most studied. They are related to traditional plastic packaging materials. Ratio, plasticity, hard strength and other properties have been significantly improved, in addition, polyester PET and PBT nano-plastics also have a live burning performance, barrier properties, etc., can replace the higher price of PBT resin, in line with packaged food requirements.

Nanotechnology, as a high-tech researching and developing rapidly in recent years, has been paid more and more attention by people. Nanotechnology has broad prospects in the packaging field. In packaging materials and packaging technology, the value of nanotechnology will be inestimable.

Conclusion

The application of green packaging and nanotechnology in modern packaging has become more and more obvious in our social life. Our lives will also be due to the application of green packaging and nanotechnology in packaging, and our lives will change. The environment in which we live will also be more refreshing. The earth we live in will make our living environment and way of life better and better. In the near future, more and more substances will appear before us. It will also bring a leap forward to our society. Our packaging industry will also embrace bright hopes and bright prospects.