such as: Maotai ? Wuliangye and other packaging. The use of ceramics and glass looks elegant, very on the grade, but in virtually increase the cost of packaging and packaging, with the cost increase, the price will follow the rise, consumer spending also increased. The price increase, the inevitable consumer groups will be reduced, the sales market will face a reduction in the crisis. And in the low-end liquor packaging is very few packaging companies interested. High-end liquor market is mainly in a second-tier cities in the high consumer groups, but in the third-tier cities and township residents are very few people from the high-end liquor consumption. Especially in the township, there are rare high-end liquor consumption groups, liquor in the township people are basically drinking local people Tujia method of brewing liquor, although this Tujia wine has its own unique flavor, but its production conditions are not very Ideal and in circulation has been limited by the packaging, circulation of the geographical area is very small. For many of the regular liquor manufacturers, the township market is almost a blank, but at the same time it is a fertile soil, a fertile fertile soil can breed the vast market. Formal wineries have excellent brewing technology and cellar equipment, can brew a pure pure liquor, if you can guarantee the quality of liquor on the basis of reducing the cost of packaging, and then sold to the township market, you can quickly occupy this market , And soon set up their own brand, will soon be able to increase revenue. The use of PET production of cylindrical plastic bottle bearing not only low cost, and good barrier, toughness, good impact resistance, in the township market relatively rugged road to play a very good protection. Therefore, PET blow molding cylindrical bottled liquor in the township market has a good prospect. 2.2 The design of inner packaging plastic bottle 2.2.1 Plastic packaging bottle material choice Plastic (plastic polymer material abbreviation) is developed in recent decades, emerging packaging materials. Plastic for its excellent performance is widely used in various types of packaging. At present, has become a major packaging material. Plastic and paper, glass, metal and other major packaging materials compared with the following characteristics: (1) light weight, good transparency; (2) has good corrosion resistance; (3) waterproof, moisture-proof performance;

(4) have the appropriate mechanical strength; (5) easy to shape, processing; (6) cheap. PET is a high crystalline polymer with a density of 1.30 to 1.38 and a melting point of 255 to 265 ° C. It has excellent mechanical properties, in the thermoplastic, its strength and toughness is the largest.