plastic packaging containers can be divided into: box packaging, disc packaging, hollow containers, large plastic drums, cups, boxes, barrels, cans, shallow disc containers, plastic packaging hose 2. How to choose the plastic packaging container material? ? meet the packaging, storage, transportation, environmental conditions and operational requirements for different goods should consider its physical and mechanical properties, thermal properties, electrical properties, chemical properties, optical properties and other characteristics to select the appropriate packaging materials. ? meet the packaging of the contents of the container on the shape of the contents of the different needs of the use of the corresponding reliable dressing and sealing methods, and the container molding methods are not the same, the molding process of plastic materials also have different morphological requirements. ? strict compliance with health regulations: packaging containers can not be used to contain harmful materials made of human health, strict restrictions on packaging materials, substances and pigments transferred to the contents of the packaging structure is not allowed to change the form of the contents of the contents of the quality of security Sexuality and effectiveness. ? The material has good print adaptability: the printing adaptability between different containers and materials is very different. Screen printing A large number of used for small quantities of hard products or the need for surface relief effect of packaging products; lithography for bottles, cans, hoses the outer surface; gravure printing for large quantities of film or sheet printing. 3. Discussion on the Characteristics and Main Process of Injection Molding Process of Plastic Products. 1) advantages and disadvantages: the system can be complex size, high dimensional accuracy, with embedded products, forming cycle is short, high efficiency, easy to achieve fully automated production. But the equipment investment, mold structure is complex, high manufacturing costs, cost, suitable for mass production. Applicable to: all kinds of thermoplastics and some varieties of thermosetting plastics. 2) injection process: plastic --- injection --- cooling stereotypes --- stripping 4. Discussion on the Characteristics and Main Process of Molding Process of Plastic Products. Advantages: can be made into a large flat products, control, equipment and molds simple, thermosetting molded products with good heat resistance, the use of a wide temperature range, deformation is small, can be mass production. Disadvantages: long molding cycle, low production efficiency, product size and low precision, difficult to shape the complex shape of the products. The process is divided into: preparation - feeding - clamping - exhaust - curing - stripping 5. The effects of two different molding processes on the quality and performance of plastic containers and their differences were analyzed. Injection molding: 1, can be made of complex size, high dimensional accuracy