Insulating box which is impermeable to the water vapour and oxygen of the ambient air.

摘要

The invention relates to a package for the protection of products sensitive to variations in the temperature and humidity of the ambient air and to oxygen or other corrosive gases. The invention is constituted by a single envelope 10 made of three-layer material. The outer face 2 of the package is made of heat-sealed paper on a central layer 1 made of polystyrene foam and the inner face 3 is covered with a sheet of heat-sealed aluminium. The envelope is pre-cut and pre-grooved so that it can be shaped at the moment of packaging the products to be protected. <IMAGE>