| 摘要 |
PURPOSE:To permit a container to be used both as a food conserving container and an electronic oven heating container by providing a container lid with a check valve made of a heat resisting, low temperature resisting rubber or rubber-like elastic body and an air hole. CONSTITUTION:A container body 3 filled with food and a lid 1 are pressed either alone or simultaneously in airtight contact with each other via a packing 6 to expel air in the container therefrom through an air hole 5 to outside. When the pressing action is released, a check valve 4 closes the air hole 5 to make the inner pressure of the container negative in order that the lid 1 and the container body 3 is brought into a close contact via the packing 6 to seal the container. When the food is reheated in an electronic oven, it is heated in its original vacuum airtight condition. To take out the food without reheating, the peripheral edge of the check valve 4 is raised to release the negative pressure of the container and the lid 1 is then removed. By an extremely simple structure and an easy method, this vacuum airtight food conserving container can also be used as an electronic oven heating container excellent in food conserving function. |
