What safety issues should be paid attention to when using plastic microwave containers

With the widespread use of microwave ovens, households and the catering industry have become increasingly dependent on their convenient heating and cooking functions. In this process, plastic microwave containers have become popular because of their lightness, durability and cost-effectiveness. However, when using plastic containers, a series of safety issues must be paid attention to to ensure food safety and consumer health.

The criticality of material selection
Not all plastic containers are suitable for use in microwave ovens. When choosing microwave containers, it is important to ensure that they have the "microwave safe" or "microwave safe" logo. These logos indicate that the container has been rigorously tested and can be safely used in microwave ovens. Common microwave safe materials include polypropylene (PP), polyethylene (PE) and certain types of heat-resistant plastics. Materials such as polyvinyl chloride (PVC) and polystyrene (PS) should be avoided, as they may release harmful substances under high temperature conditions and endanger health.

The importance of temperature limits
Each plastic container has its own heat resistance temperature limit. During microwave heating, the temperature may rise rapidly, and exceeding the heat resistance range of the container may cause the container to deform, melt or release toxic substances. Therefore, it is particularly important to follow the manufacturer's usage guidelines, especially when heating for a long time, and avoid placing the container in a high temperature environment.

Food contact safety concerns
Some plastic containers may contain harmful chemicals, such as bisphenol A (BPA) and phthalates, which may migrate into food during heating. Choosing plastic containers labeled "BPA-free" or "food grade" can effectively reduce potential health risks. In addition, avoid heating foods high in fat or sugar in plastic containers, as these foods heat up faster during microwave heating, which may cause the container to release harmful substances.

Use of appropriate lids
When heating food in the microwave, using appropriate lids can help retain moisture in the food and prevent splashing. However, using improper lids may cause pressure to accumulate, which may cause an explosion. Therefore, make sure the lid used is microwave-safe and has vents to allow steam to escape smoothly during heating. Metal lids or containers that are too tightly sealed should be avoided to prevent accidents.

Avoid overheating and sudden cooling
During microwave heating, food may overheat locally, which may cause the container to deform or crack. To ensure even heating, it is recommended to pause the microwave and stir the food regularly during heating. In addition, avoid placing hot plastic containers directly into ice water or cold water to prevent cracking due to sudden temperature changes.