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Plastic Packaging One Of The Four Major Materials In The Packaging Industry
Sep 29, 2017

Plastic is made of synthetic or natural polymer resin as the main material. Add a variety of additives, at a certain temperature and pressure with ductility, cooling can be fixed after the shape of a class of materials. Natural or synthetic polymer resin molecules in the molten state, and the surrounding uniform distribution of additives molecules called plastic process, has reached the process has been plasticized, has not yet reached, is considered not yet plasticized. Plastic packaging is one of the four major packaging materials: paper and paperboard accounted for 30%, plastic accounted for 25%, metal accounted for 25%, glass accounted for 15%.

Plastic classification

Plastic according to its own performance can be divided into: can be repeated several times to melt the processing and can maintain its basic characteristics of the thermoplastic and can only be a melt-forming thermosetting plastic two categories. According to its use can be divided into a wide range of use, cheap, comprehensive performance better general plastic, such as PE, PP, PVC, PS, and amine plastic has a good physical strength, may replace the metal used in construction machinery Of engineering plastics such as: ABS, nylon, polyester, POM, TPX-1 and so on. As well as in a certain performance with a particularly good class of engineering plastics, such as: with a particularly good resistance to radiation, high temperature and other special plastic, such as: polyarylsulfone, liquid crystal polymer. According to the size of the molecular weight of thermoplastic resin molecules, the thermoplastic can be divided into amorphous polymer and crystalline polymer two categories.

Key Features

The main features of the plastic are: first, the density is small, the high strength, you can get a higher packaging yield, that is, "the unit mass of the packaging volume or packaging area size.Second, most of the plastic chemical resistance is good Good acid, alkali, resistant to all kinds of organic Rong agent, long-term placement, no oxidation. Third, easy to shape, the required molding energy consumption is lower than steel and other metal materials. Fourth, with good transparency, easy to color Fifth, with good strength, the strength of the unit weight of high performance, impact resistance, easy to modify. Sixth, low processing costs. Seventh, excellent insulation.

Packaging industry development

In the synthesis, 25% for the packaging industry, for this important part of the plastic packaging industry, plastic packaging is one of the four major packaging materials: paper and paperboard accounted for 30%, 25% of plastic, metal accounted for 25 %, Glass accounted for 15%. More than 25% of the above fully illustrates the importance of the plastic packaging industry. Although the plastic packaging industry is the second packaging materials, in fact, not as good as paper and cardboard packaging. But the plastic packaging industry is growing at a rate of 5% per year, while other packaging materials, including paper and paperboard, metal, glass, pottery, cotton and other cotton only grow at a rate of 2%, for which one day the plastic packaging industry Will be more than paper and paperboard and become the first packaging materials.

China's modern packaging industry since the implementation of reform and opening up policy to be developed rapidly. After three decades of development, China Packaging Industry has become an independent, complete and complete industrial system with paper, plastic, metal, glass, packaging printing and packaging machinery and equipment as the main industry and the Yangtze River Delta, Pearl River Delta Bohai Bay as the key area of the packaging industry pattern.

From the total amount of the packaging industry, China is a large packaging country, but not a packaging power, the performance of independent innovation capacity is still weak, lower value-added products, the value of packaging in the industry chain is not fully reflected. Low-level redundant construction, resulting in low-end product overcapacity and high-end product supply shortage of contradictions, the lack of development potential. China's packaging industry needs to rely solely on the amount of growth, expand capacity development, to rely on scientific and technological innovation, technological progress, optimize the structure of adjustment, and enhance the core competitiveness of industrial development. 

Packaging containers

In the packaging container, the original packaging of the container is the glass bottle followed by paper compound cans, and then PET bottles, and now the rigid PET bottles are already carbonated drinks and non-carbonated drinks the largest packaging materials, and in the United States in 1991 accounted for 32.5% of the beverage packaging containers, glass bottles from 1981 to 28.9% down to 19.5%, aluminum tank accounted for 39%. And plastic bottles are growing at an annual rate of more than 3%. Can be sure to say that even in the plastic packaging industry by the most accusations of the country. Plastics will continue to develop at a much faster rate than other packaging materials because many of the properties of plastic are irreplaceable for any other packaging material. Plastic packaging industry has been occupied in the field of packaging sales at the same time, has been to the development of transport packaging, and ultimately will force the still metal-based "transport packaging" to replace the main plastic.

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