PP is commonly used in: soy milk bottles, yogurt bottles, juice drink bottles, microwave lunch boxes.
Use: The common melting point is as high as 167 ℃. It is the only plastic box that can be safely placed in the microwave oven and can be reused after careful cleaning. Need special attention, some microwave lunch boxes, the box body is indeed made of No. 5 PP (the special PP for microwave ovens is resistant to high temperature of 120 ℃, and low temperature resistance of -20 ℃), but due to the high cost, the lid generally does not use special PP but uses No. 1 PET Manufacturing. Since PET cannot withstand high temperatures, it cannot be placed in a microwave oven together with the box. To be safe, remove the lid of the container before putting it in the microwave.
Note: Remove the lid when putting it in the microwave.
PS is often used in: bowls of instant noodle boxes, fast food boxes. Don’t use the microwave to cook instant noodles in a bowl.
Use: It is heat-resistant and cold-resistant, but can not be placed in a microwave oven to avoid the release of chemicals due to excessive temperature (released at 70°C). And can not be used to contain strong acids (such as orange juice), strong alkaline substances, because it will decompose polystyrene, which is not good for the human body, and is easy to cause cancer. Therefore, you should try to avoid using fast food boxes to pack hot food.
Note: Do not use the microwave to cook instant noodles in a bowl.