| 摘要 |
PURPOSE: A vacuum container having a double-packing structure is provided which makes the container less deformable even when the vacuum degree of a vacuum chamber is increased, enables the vacuum container to be manufactured in a large size, and maintains a predetermined vacuum degree of the vacuum chamber even using a relatively weak plastic material. CONSTITUTION: The vacuum container comprises: a cover(10) consisting of an upper plate and side walls; a main body(20) consisting of a bottom plate and side walls; a vacuum chamber(60) having an inner space formed by combining the cover(10) and the main body(20); and a vacuum valve(30), wherein lower connection grooves(21) are continuously arranged on side walls of the main body(20) and upper connection grooves are continuously arranged on inner wall of the upper plate of the cover(10).
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