There are several types of packaging materials for food packaging, and PP and pet materials are the most common ones. Both of them can be directly used for food packaging. However, PP materials are resistant to low and high temperatures, and pet has good transparency. Both have their own advantages and disadvantages, depending on individual choices.
Which is the best material for food packaging, PP or PET
Both pet and PP are environmentally friendly materials. The melting point of PP is relatively high, reaching 167C. It is the only plastic that can be heated in a microwave. It has good high-temperature resistance, will not deform, will not produce harmful substances, and can withstand low temperatures of -35 ° C. It is commonly used in toys, washing machines, car parts, food boxes, food bags, etc.
If the pet material is heated to 70 ° C, it is prone to deformation. At the same time, it can produce some harmful carcinogens that affect human health. It is usually used for packaging products, such as beverage bottles, edible oil bottles, seasoning bottles, etc. It is also used in fields such as household appliances and machinery.
In short, both pet and PP food boxes are safe and suitable for food grade use. They are packaging that can come into direct contact with food. However, the specific choice of use should depend on the specific situation. If it is necessary to heat the food in the food box, PP material should be selected. If heating is not required, pet and PP food boxes can be chosen.
Which is safe for food packaging, PP or pet
The main component of PET material is polyethylene terephthalate, which is commonly used for packaging mineral water bottles, carbonated beverages, and other products. High temperature resistance is not very good. It can only withstand high temperatures of up to 70 ° C. When the temperature exceeds this temperature, it will deform and release harmful substances to the human body. It should not be exposed to sunlight, nor should it contain alcohol or oil. If used for more than 10 months, DEHP with carcinogenic effects can also be released.
PP material, namely polypropylene, is mainly used for soybean milk, fruit juice and microwave lunch box. The melting point is 167 ℃, which is the only plastic that can be used to manufacture microwave heating materials. After cleaning, it can also be reused. At present, it has been recognized as a safe and widely used material, and has become a material in many factories and industries.
PP and PET materials used for food packaging are actually good, but PP materials have better safety, heat resistance, and safety, so they are also widely used, but still depend on the specific scope of use.
Generally speaking, PP is very good compared to pet. PP can withstand low and high temperatures, while pet is relatively transparent. The specific selection is based on actual needs.
What is the difference between pp and pet materials
The difference between pet and PP lies in their different appearances, characteristics, and uses.
1. Different appearances
Pet refers to polyethylene terephthalate, which is a milky white or light yellow high crystalline polymer with a smooth surface. It is a common resin in daily life; PP refers to polypropylene, which is a colorless, odorless, non-toxic, and semi transparent solid material.
2 Different features
Polyethylene terephthalate has good creep resistance, fatigue resistance, wear resistance, and dimensional stability, low wear, high hardness, and maximum toughness in thermoplastic materials; Polypropylene has high thermoplastic properties, light specific gravity, and chemical corrosion resistance.
3. Different uses
Polyethylene terephthalate is mainly used in electronics and electrical appliances, such as sockets, Electrical connector, 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, automobiles, bicycles, components, transmission pipelines, chemical containers, and packaging for food and medicine.