| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum double container for keeping soup warm allowing the soup to be spooned up by a spoon.SOLUTION: A vacuum double container for keeping soup warm 100 comprises: an inner cylinder portion 111; an outer cylinder portion 112; and a vacuum space SP. The inner cylinder portion has a side wall portion 111a, a leading end wall portion 111c and a bottom portion 111b. The leading end wall portion is formed of a substantially cylindrical tube and is joined to an upper side of the side wall portion. The outer cylinder portion 112 has a bottom wall portion and is joined to an opening end portion of the leading end wall portion of the inner cylinder portion at an opening end portion. The vacuum space is formed between the outer cylinder portion and the inner cylinder portion. Further, in the inner cylinder portion, an opening diameter of the leading end wall portion is greater than an opening diameter of the side wall portion. In addition, it is preferable that the inner cylinder portion be formed of a material more excellent in corrosion resistance than a formation material of the outer cylinder portion.SELECTED DRAWING: Figure 2 |
