① Plastics are small in density, light in quality, and opaque to transparent.
② easy to mold processing, as long as the replacement of molds, you can get different varieties of containers, and easy to form mass production.
③ packaging effect is good, plastic varieties, easy to color, bright color, can be produced according to the needs of different types of packaging containers, to achieve the best packaging results.
④ has good corrosion resistance, acid and alkali resistance, oil and shock resistance, and has good mechanical strength. Plastic packaging containers also have its shortcomings: such as plastic at high temperature easily deformed, so the use of temperature is limited, the surface hardness of the container is low, easy to wear or tear; Under the action of light oxygen and hot oxygen, the plastics will degrade, become brittle, degrade performance and other aging phenomena; poor conductivity, easy to generate static electricity accumulation.
