Insight & Problem
More time is needed. The elderly and children may need more time for a dinner because generally they eat slowly. But, the food may get cold before they can finish it. Stomach or Microwave. For the elderly and children, they must make the choice between eating quickly or reheating the food. However, each selectionis harmful, eating quickly may hurt their stomach while reheating food may destroy food nutrition.
Warm Double-Deck Bowl
Warm Double-Deck Bowls are made of porcelain, there is interlayer which can inject hot water in order to keep heating food inside. It is 2-3 times longer in terms of time comparing to ordinary bowls. Hot water is poured from the bottom opening and tighten the lid afterward, it is convenient as well as enhance the product security. It has the exactly same shape as ordinary bowls when you look at in front and easy to be packed up.
We all have the experience to warm hands with a cup of hot coffee or tea, the heat capacity of water is reletively high, so that using hot water to keep food warm might be a good idea. About material, by using porcelain instead of other materials because of its low thermal conductivity, it will not burn hands even if the bowl is fulled with hot water, meanwhile keeps a longer time to heat the food. More importantly, it can be used repeatedly by using china as well as it can heat in microwave.