What’s the differences among PET cups, PP cups and PS cups?

The disposable plastic cups are usually made from Polyethylene terephthalate (PET or PETE), Polypropylene(PP) and Polystyrene(PS). All of the three materials are safe. These materials’ characteristics variation make cups are with different producing methods and outlooking.

Cups made from Polyethylene terephthalate(PET, PETE) are clear, smooth shinning and durable. They are freeze resistant to -22°F and heat resistant to 180° F. They are ideal for juice, soft drinks etc. They usually have number”1″ inside the recycle symbol together with PET under the symbol.

Polypropylene(PP) cups are semi-transparent, flexible and crack-resistance. They have high melting point and can resist oil, alcohol and many chemicals. They are quite safe used for drinks and other packages. PP cups can be made in different colors. The cups usually have number” 5″ inside the recycle symbol and “PP” words comes under it.

There usually two types of polystyrene materials are used to make the cups and glasses: HIPS and GPPS. The thermoformed cups are usually made from HIPS. It’s original color is foggy and they can be made in different colors. HIPS cups are rigid and brittle. A PS cup is thinner than a same weight PP cup. Injected glasses are made from GPPS. The glasses are light and with high light-transmitting. Plastic glasses are ideal for parties and other occasions. They can be made in different colors and neon plastic glasses are great for night parties. PS cups generally have number”6″ inside the recycle symbol and “PS” words under it.

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