What's the advantage of plastic packing?
) small proportion, light weight. Although the proportion is less than that of other plastic packaging materials, but their strength / weight ratio is larger, making it possible to replace some larger strength materials, packaging container for manufacturing large load-bearing (such as a barrel, basket and box etc.). Packing materials and containers are small in proportion, which can save handling and transportation costs.
Plastic can be made into transparent or different color packaging materials and containers, which is convenient for printing, bronzing, vacuum spraying, metal plating and embossing. Moreover, most of the plastic sealing, chemical resistance (acid, alkali, salt, etc.), moisture resistance and other aspects are better than paper and metal materials.
The processing of plastic, easy to process into different forms (such as film, sheet, rod, tube etc.) and complex shape of the container (such as shaped bottles, barrels, barrels, boxes, and etc.), can take the blow moulding and extrusion, injection molding, plastic molding, calendering, extrusion, hollow, plastic molding etc. process, the variety of packaging containers made of patterns, and little investment in equipment. This is obviously a great advantage over metals, glass, paper and wood.
A wide range of plastics, different personality, can adapt to different packaging requirements of goods. Plastics can be modified by a variety of methods (copolymerization, blending, grafting, etc.) to improve their physical and chemical properties to meet the special packaging requirements. The plastic can also take the method of composite and plastic, put several layers with different properties of plastic film composite material _ together, or with paper and metal foil (usually aluminum box) composite, the packaging materials has a variety of functions, or on the surface of paper, cardboard and other materials coated with plastic, improve the packaging function. Therefore, plastic packaging design provides a wide range of material selection possibilities.
) plastics are rich in resources and less energy intensive. The basic raw material of plastics comes from oil and coal. Processing takes less energy than metal smelting and glass melting. This is a great advantage for saving energy.
