Many office workers now like to prepare lunch on their own, but sometimes they do not care what kind of material this bento lunch box is, just put it into the microwave oven. Actually, it is completely wrong. Many bento lunch boxes may produce kinds of harmful substances after being heated in a microwave oven. However, what kind of box can be put into the microwave oven healthily and safely? Here, we are introducing the best material for microwavable bento boxes which is the best to heat in the microwave! The following is a brief introduction to bento box kinds.
Glass bento lunch box includes microwavable bento boxes that are made of borosilicate glass, glass ceramics, and titanium oxide crystal glass. They are suitable for heating in microwave ovens for an extended period of time due to their good microwave penetration performance, stable physical and chemical properties, and high-temperature resistance (up to 500℃ or even 1000c).
Ceramic bento lunch boxes are classified into heat-resistant ceramics and ordinary ceramics. Bento lunch boxes such as pots and pans made of heat-resistant ceramics are suitable for long-term use in microwave ovens, while ordinary ceramic lunch boxes can only be used for short-term heating. Especially note that ceramic bento lunch boxes containing gold and silver wires that will sparkle when heated, so they are not suitable for heating in a microwave oven.
Plastic bento lunch boxes are usually made of polypropylene, polypropylene resin, composite polypropylene, polysulfone, and other materials with a temperature resistance of over 120 degrees Celsius and can heat in a microwave oven. And the bento lunch boxes in PET resin and polyester material have a temperature resistance of over 220℃ and can be used for barbecues.
Metal bento lunch boxes that are made of metal materials such as aluminium, stainless steel, enamel, etc., are not suitable for use in microwave ovens because microwaves cannot penetrate the metal bento lunch box that the food in boxes cannot be heated.
These lunch box kind can be used in a microwave oven for a short time when wet. But if heated for a long time, the bento box will dry out and easily burn. Painted bento lunch boxes are prohibited from being used in microwave ovens because the benzene which exists in the paint will emit and then contaminate food. Therefore, in order to have a safe and healthy life, we'd better choose a microwave lunch box made of glass or ceramic.