Patent ID: 8137784

Claim:
Thermal insulation panel, comprising: a housing with: a first main wall and a second main wall which each extend perpendicularly of a temperature gradient, and auxiliary walls connecting both main walls and extending parallel to the temperature gradient, wherein the auxiliary walls are welded to edges of the main walls, and a filling placed in the housing and able to withstand pressure forces, wherein the pressure within the housing has a value at which no heat transfer of any significance takes place, wherein the housing is manufactured from metal, wherein edges of each main wall are bent over to form skirts; wherein each auxiliary wall consists of a metal foil and is welded to the skirts of each main wall at the edges of the main wall to form seams, and wherein a welding strip having a width smaller than half the width of the auxiliary walls is arranged over and welded to the seams between the auxiliary walls and the main walls, wherein the auxiliary walls are formed by a piece of said metal foil with thickness between 10 and 50 μm.