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Polypropylene (PP) is a good choice for product packaging because it is a highly durable material in both container and closure forms. PP is a good barrier against moisture, oil, and alcohol and it is resistant to many chemicals. The shortage of PP material lies in: it is easy to get oxidized and aged.
Polystyrene (PS) material is non-toxic by itself, but in the production of disposable tablewares, a lot of prohibited additives will be added into this material. And such kind of additives will dissolve with water, vinegar, oil and other things in the food. These dissolved material will go into human body, resulting in bad indigestion, partial ache and other kinds of diseases. That is why some areas have prohibited the usage of PS material in the industry of food packaging.
Polyethylene terephthalate (PET), a common plastic material known for its characteristic of durability, is capable of preserving a product's original aroma and taste. In comparison to the traditional PS cups, the PET material cups are more durable, stronger, transparent, chemical-resistant and crack-resistant. It is widely used as environmental-friendly material.
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no more answers
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gtla[ps
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