Patent ID: 9017565
Filing Date: 2015-04-28
Classification: B63B,F17C,Y10T

Abstract:
1. A method of constructing an insulation structure of a cargo tank of an LNG carrier constituted by a secondary barrier of top and bottom insulation panels, comprising a first metal foil attached and installed in between the top insulation panel and the bottom insulation panel; a second metal foil attached to and installed on the first metal foil that is positioned on an upper side of a gap formed between the bottom insulation panels; and a top bridge panel attached to and installed on an upper side of the second metal foil; wherein the first metal foil and the second metal foil are made of aluminum or stainless steel and are coated with a primer or silane, an adhesive member is disposed on the adhesion part formed on the first metal foil and the second metal foil, the method comprising: providing an assembly including the second metal foil, the adhesive member, and a protective film, wherein the assembly is formed by surface-treating a surface of the second metal foil, coating a primer or silane on the surface of the second metal foil, attaching the adhesive member to a lower face of the second metal foil, and attaching a protective film to the second metal foil to cover the adhesive member on the second metal foil to prevent a foreign substance from being attached; removing the protective film to expose the adhesive member on the second metal foil; placing the second metal foil at an adhesion location above the gap such that two opposite sides of the lower face of the second metal foil are respectively in contact with a pair of the adjacent first metal foil; installing an adhesive jig on an upper face of the second metal foil; and attaching the second metal foil to the first metal foil by heating and pressing the second metal foil with the adhesive jig.