Can plastic lunch boxes be heated in a microwave
Release Time：
2024-05-27
Source：
Whether a plastic lunch box can be heated in a microwave depends on its material.
In plastic food boxes, only PP (polypropylene) material boxes marked with triangular arrows and a number of 5 can be safely placed in the microwave for heating. This material has a melting point of up to 167 ℃ and can be reused after careful cleaning.
However, not all plastic lunch boxes are suitable for microwave heating. Some plastic lunch boxes may precipitate harmful substances under high temperatures in microwaves, so it is not recommended to use non microwave specific plastic lunch boxes for heating.
Some microwave lunch boxes on the market may be made of plastic No. 5, but the lid may be made of other materials, such as plastic No. 1 (PET), which is commonly used in mineral water bottles and carbonated beverage bottles and is not suitable for microwave heating.
When using a microwave to heat plastic lunch boxes, it is important to avoid long-term high-temperature heating, as once the temperature exceeds their heat resistance limit, plasticizers may be released.
When choosing a plastic box suitable for microwave heating, it is important to ensure that the container is suitable for microwave use and avoid using old or damaged plastic boxes, as these containers may crack or deform, making them unable to withstand the high temperature of microwave heating and may even release harmful substances.
In summary, only plastic lunch boxes made of specific materials can be safely heated in a microwave, while plastic lunch boxes made of other materials may release harmful substances due to high temperatures. Therefore, the material identification of the lunch box should be checked before use to ensure safety.
Related Information
2024-05-27
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