Physical foaming method of porous plastic
2021-04-27 Browse:81time The author:
Porous plastics have different properties due to their density and structure. From the perspective of packaging, what are the characteristics of porous plastics?
1. The density is very small, generally between 0.02-0.2g/cm3, so the weight is very light, and the consumption of raw materials is low, which reduces the weight of the packaging, reduces the transportation cost, and the cost is not high.
2. It has excellent shock absorption performance and excellent shockproof effect, which can effectively protect the packaged items.
3. Good mechanical properties, good compressive strength and resilience performance, especially porous plastics with different properties can be selected according to the weight of the packaged items.
4. Good chemical stability, strong resistance to acids, alkalis, salts and other chemicals, its own pH value is neutral, and it will not corrode the packaged goods.
5. Excellent processing performance. It can not only be made into soft and hard porous plastics of different densities, but also can be molded into various packaging containers according to the shape and size of the packaging articles. It can also be used for foam board (block) materials with a variety of adhesives. The mixture is bonded to make various cushioning structural materials.
6. It has good water resistance and low hygroscopicity. Even in wet conditions, it will not be deformed and destroyed, which will affect its ability to absorb external forces.
7. It has quite good stability to temperature changes, which can fully meet the requirements of general normal packaging.
8. Since the porous plastic contains a large number of tiny bubbles, it has excellent thermal insulation performance and can be used as a thermal insulation material, and can also be used for thermal insulation packaging. I hope everyone can understand
the characteristics of porous plastics .
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