| 摘要 |
PROBLEM TO BE SOLVED: To surface-treat the inner-container internal surface of inner/outer double containers uniformly and for easy cleaning resulting from no possibility that the surface will have contents sticking to it, smell and foul, improve the outer appearances of them, and reduce the manufacturing cost of them. SOLUTION: This metallic vacuum double container comprises an inner metallic container 1A and an outer metallic container 1B. The inner container 1A has an enamel-treated layer 20, a ceramic-treated layer 30 and a metal-plated layer 40 on its internal surface 12 saving an opening edge weld 1C.
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