Pet and PP are both environmentally friendly materials. The melting point of PP is relatively high, which can reach 167℃. It is the only plastic that can be heated by microwave oven. Good high temperature resistance, no deformation, no harmful substances, can withstand the low temperature of -35℃, and is often used in toys, washing machines, auto parts, food boxes, food bags and so on.

If the pet material is heated to 70℃, it will be easily deformed. At the same time, it will produce some carcinogens harmful to human body, which will affect human health. Usually used for packaging products, such as beverage bottles, edible oil bottles, seasoning bottles and so on. It is also used in household appliances, machinery and other fields.

In a word, both pet and PP food boxes are safe. They are packages that can directly contact food. But the specific use depends on the specific situation. If you need to heat the food in the food box, you should choose PP material. Generally speaking, PP is quite good compared with pet. PP is resistant to low temperature and high temperature, and pet is relatively transparent. The specific choice is subject to the actual demand.

Differences between pp and pet materials;

1, with different appearance.

Pet refers to polyethylene terephthalate, which is a highly crystalline polymer with milky white or light yellow color and smooth surface. It is a common resin in life; PP refers to polypropylene, which is a colorless, odorless, nontoxic and translucent solid material.

2. Different characteristics

Polyethylene terephthalate has good creep resistance, fatigue resistance, wear resistance and dimensional stability, little wear and high hardness, and has the greatest toughness among thermoplastics. Polypropylene has high thermoplasticity, light specific gravity and chemical resistance.

3. Different uses

Polyethylene terephthalate is mainly used in electronic appliances, such as sockets, electronic connectors, rice cooker handles, TV deflection coils, junction boxes and circuit breaker housings; Polypropylene is widely used in the production of fiber products, such as clothing, blankets, medical devices, cars, bicycles, parts, transmission pipes, chemical containers and packaging of food and medicine.