Copolymer of propylene (polypropylene) abbreviated as PP is a type of plastic used as raw materials for food packaging.
has a relatively low density, density, melting point 160-170 ° C from 0.90 to 0.91. was formed by annealing PP Food Grade plastic resin and fired up. , hardness and toughness, dimensional stability, good resistance to bending is moderate. resistant to heat and chemicals. clear More transparent HDPE prevent the passage of moisture. prevent the passage of air is low. less resistant to cold
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