Method for manufacturing heat-insulating container

Provided is a method for manufacturing a heat-insulating container (1A) capable of forming a vacuum heat-insulating layer between an outer container and an inner container without providing a degassing slit. A method for manufacturing a heat-insulated container (1A) having a metal outer container (2) and an inner container (3), the outer container (2) and the inner container (3) being open at one end, the inner container (3) being joined to each other at the open end in a state in which the inner container (3) is housed inside the outer container (2), and a vacuum heat-insulating layer (4) being provided between the outer container (2) and the inner container (3). A vacuum insulation layer (4) is formed between an outer container (2) and an inner container (3) by joining one member (2a) and another member (2b) constituting the outer container (2) by welding. 本发明提供一种不设置脱气用的狭缝就能够在外容器与内容器之间形成真空隔热层的隔热容器(1A)的制造方法。该隔热容器(1A)具有一端开口的金属制的外容器(2)以及内容器(3)，在内容器(3)收纳于外容器(2)的内侧的状态下将相互的开口端侧接合，并且在外容器(2)与内容器(3)之间设置有真空隔热层(4)，该隔热