Plastic packaging refers to the use of plastic packaging. Plastic is a synthetic or natural polymer resin as the main material. A kind of material that has ductility under certain temperature and pressure after adding various additives and can fix its shape after cooling. It is a supporting product of food, beverage, medicine and other industries. Its performance must meet the needs of various industries in the national economy. Most of the important industries in the national economy are related to the plastic packaging industry. Therefore, the development of plastic packaging industry depends on the development of national economy.
Plastic packaging in China is mainly composed of plastic film / bag, plastic packaging box and container, and the packaging materials are polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polyvinylidene chloride (PVDC), etc.
As a big packaging manufacturing and consumption country, after more than 30 years of development, the packaging industry has formed a modern industrial system with paper, plastic, metal, glass, printing and machinery as the main components, with certain modern technology and equipment, and a complete range of modern industrial system.
China's plastic packaging industry started in the 1970s; From the early 1980s to the 1990s, China's plastic packaging industry witnessed a rapid growth period. During this period, the effects and functions of plastic packaging of various domestic commodities have undergone fundamental changes; since the 1990s, large multinational enterprises have successively entered China, and the packaging market has more requirements for plastic packaging, At the same time, the packaging demand is growing rapidly, and the market scale is expanding.
In recent years, China's plastic packaging industry continues to develop rapidly, has developed into a relatively complete category, can basically meet the domestic market demand, but also has a certain international competitiveness.
The environmental friendly requirements of plastic packaging are higher and higher
In the 21st century, environmental problems are becoming more and more important, and resources and energy are becoming more and more tense. Plastic packaging will usher in new opportunities and severe challenges. In order to meet the requirements of the new era, plastic packaging materials should not only meet the requirements of increasing packaging quality and efficiency, but also save energy and resources, which are easy to be recycled or degraded by the environment. In recent years, photodegradable plastics, biodegradable plastics, water-soluble plastics and other new degradable plastic packaging materials have become the focus of research and development of packaging materials at home and abroad.
More and more high-tech and high-end equipment are used in plastic packaging
In recent years, a large number of high and new technologies, such as glueless composite, aseptic packaging technology and degradable plastic manufacturing, have been popularized in the plastic packaging industry, which has effectively promoted the improvement of production technology level and the upgrading of products in the plastic packaging industry. In terms of technical equipment, through the introduction and absorption of foreign advanced technology and equipment in packaging printing, plastic film and other fields, China's packaging machinery and equipment manufacturing level has gradually reached or approached the advanced level of developed countries in the same period.
The trend of lightweight of plastic packaging is more and more obvious
Lightweight is a common industrial vocabulary in the field of packaging, that is to produce packaging with less materials and reduce the weight of packaging. Reducing the weight of packaging is beneficial to protect the environment and reduce the cost. When a kind of plastic packaging is successfully lightweight, the resin materials used in the plastic molding process are reduced, which not only effectively saves resources and reduces costs, but also effectively protects the environment due to the reduction of waste after packaging.
The application of plastic packaging is more and more extensive
Plastic packaging has the advantages of light weight, less shelf space, low transportation cost, good barrier property and tensile strength. The plastic packaging with additives has certain advantages in flame retardant performance. Therefore, plastic materials in some areas of glass products, metal products to form a trend of substitution, especially in hard containers and flexible packaging applications continue to expand. In terms of hard containers, such as plastic trays and plastic drums, the long-term cost is lower than that of fiberboard barrels due to their reusability. In terms of flexible packaging, bags and films in plastic products, as the main packaging containers of dry food and retail food, will still have a great application. With the deepening of research and development of plastic industry, new materials, new technologies and new equipment will continue to emerge, the properties of plastic materials will be further improved, and its application fields will continue to expand.