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Plastic Packaging The Characteristics Of Any Other Packaging Materials Can Not Be Replaced
Nov 03, 2017

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

Plastic classification

Plastic according to its own performance can be divided into points: can repeatedly melt molding process can basically maintain their characteristics of the thermoplastic and can only be a melt molding of the two major categories of thermosetting plastics. According to its use to points can be divided into a wide range of use, cheap, better overall performance of common plastics, such as PE, PP, PVC, PS, and amine plastics have good physical and mechanical strength, may replace the metal used in construction machinery Engineering plastics such as: ABS, nylon, polyester, POM, TPX-1 and so on. As well as a certain performance with a particularly good class of engineering plastics, such as: has a particularly good radiation resistance, high temperature resistance and other special plastics, such as: poly aryl sulfone, liquid crystal polymer. According to the size of the thermoplastic resin molecules to the points, the thermoplastic can be divided into two types of amorphous polymers and crystalline polymers.

Key Features

The main characteristics of plastic are: First, the density is low, high strength, higher packaging yield can be obtained, that is, "the unit mass of the packaging volume or packaging size. Second, most of the plastic chemical resistance, there Good acid, alkali, resistant to all kinds of organic Rongdeng, long-term place, without oxidation. Third, easy to shape, the required energy consumption is lower than steel and other metal materials. Fourth, with good transparency, easy to color Fifth, with good strength, high strength and weight per unit weight, impact resistance, easy to modify. Sixth, low processing costs. Seventh, excellent insulation.

Packaging industry development

In the synthesis, 25% is used in the packaging industry. Therefore, plastic packaging is one of the four major materials in the packaging industry: 30% of paper and cardboard, 25% of plastic and 25% of metal %, Glass 15%. The above two 25% fully demonstrates the importance of the plastic packaging industry. Although the plastic packaging industry is the second packaging material, in fact, not as good as the paper and cardboard packaging. However, the plastic packaging industry is growing at a rate of 5% a year, while the other packaging materials, including paper and paperboard, metal, glass, ceramics, cotton and so on, only grow at a rate of 2% Will exceed the paper and cardboard and become the first packaging material.

China's modern packaging industry has been able to develop rapidly since the implementation of the policy of reform and opening up. After three decades of development, China's packaging industry has become an independent, complete and comprehensive industrial system with its main industries of paper, plastic, metal, glass, packaging, printing and packaging machinery, Bohai Bay as the key area of the packaging industry pattern.

Speaking from the total volume of the packaging industry, China is already a big country in packaging but not a packaging power. The performance of enterprises is still weak in independent innovation, and the added value of products is low. The value of packaging is still not fully demonstrated in the industrial chain. Low-level redundant construction led to the contradiction between overcapacity in low-end products and insufficient supply of high-end products, and the development lacks staying power. China's packaging industry needs a simple reliance on the amount of growth, expand capacity development, relying on technological innovation, technological progress, optimize the adjustment of the structure, and enhance the core competitiveness of industrial development. 

Packaging containers

In the packaging container, the original packaging of beverage containers is the second glass bottles of paper composite cans, and then PET bottles, and now rigid PET bottles of carbonated drinks and non-carbonated drinks has been the largest packaging material in the United States in 1991 accounted for 26.5% of beverage containers and containers dropped from 28.9% in 1981 to 19.5% and aluminum cans accounted for 39%. And plastic bottles are growing rapidly at more than 3% annual growth rate. It is safe to say that even in the plastics packaging industry, the country most blamed. Plastics will continue to grow at a much faster rate than other packaging materials because many of the properties of plastics are beyond the reach of any other packaging material. Plastic packaging industry has occupied the sales and packaging areas at the same time, has been developed to transport packaging, will eventually force the still metal-based "transport packaging", mainly to replace the plastic.

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