The tensile strength of its film and aluminum foil is equivalent to 9 times with ethylene, nylon and polycarbonate 3 times; impact strength is also the general film 3 to 5 times. And has good rigidity, hardness, wear resistance, folding resistance and dimensional stability, good creep resistance. PET has excellent anti-odor permeability, good air tightness and moisture resistance. Heat resistance, good cold resistance, in a wide temperature range can maintain excellent physical and mechanical properties. Long-term use at 120 ℃, short-term use at 150 ℃, in the -200 ℃ liquid nitrogen is still not hard and brittle, -40 ℃ is still able to maintain its impact strength, can be between -70 ~ + 150 ℃ use. Resistant weak acid, weak base and most organic solvents, good cream; suitable for printing. PET blow molding bottles, since the 20th century since the beginning of the industry since the industry has developed rapidly, has now become the second largest blown plastic products, commonly used in beverages, condiments, and other packaging PET beverage bottle performance ( 1) high strength of the two-way stretch PET bottle tensile strength, impact strength was significantly higher than the direct extrusion blow molding and PVC bottles; (2) good chemical resistance Biaxially stretch PET bottles with good oil resistance, acid (3) excellent barrier properties of impermeability can improve the barrier properties of PET bottles, especially for oxygen, water vapor and carbon dioxide barrier properties of the most excellent for the beverage, condiments and other goods shelf life requirements, Provides a very convenient conditions In addition, two-way stretch PET bottles are light, transparent, protect the contents of the green, the use of a wide range of temperature and recyclable features. Therefore, in the selection of PET materials made of cylindrical plastic bottles have great advantages and very practical, and its low cost, in the township circulation environment on the liquor products play a very good protective effect. 2.2.2 Packaging plastic bottle shape and structural design The design of the cylindrical bottle type, cylindrical bottle of low cost, full-featured, suitable for rotary printing. The most easy to blow, in a larger range of long neck than the stability, easy to fill, transport, packing, stacking. The cap has a cap cap, and the cap cap has the advantage of being able to open or close the bottle several times without using the tool. And 750ml of white wine is generally not a one-time open to drink finished, there will be closed and then open the time, therefore, here the use of screw cap type cap is more reasonable and feasible. 2.3 Outer packaging carton design 2.3.1 corrugated paper grade, quantitative selection and corrugated corrugated type of corrugated paper for the A-level, select first-class goods corrugated paper, quantitative 80g / m2; face paper selection of first-class kraft paper cardboard, Quantitative 125g / m2; packaging cartons for a single corrugated boxes, corrugated Leng type for the C-type. 2.3.2 Corrugated box box selection and structural design.