Insulating arrangement for the inner insulation of an aircraft

An insulation packet comprising:

• an insulation material;
• and
• a selectively permeable film completely surrounding and encasing said insulation material;
• wherein said film has a first diffusion resistance with respect to water vapor diffusing through said film outwardly out of said insulation packet and a second diffusion resistance with respect to water vapor diffusing through said film inwardly into said insulation packet, and wherein said second diffusion resistance is greater than said first diffusion resistance.

In an air vehicle including an outer skin, an inner trim component that is arranged spaced from said outer skin with an interspace therebetween and that bounds an interior cabin therein, and an insulation arrangement including an insulation packet disposed in said interspace;

• an improvement of said insulation arrangement,
• wherein said insulation packet comprises an insulation material and a gas permeable film that completely surrounds and encases said insulation material,
• wherein said film has an inner film surface that faces inwardly in said insulation packet toward said insulation material and an outer film surface that is opposite said inner film surface and that faces outwardly from said insulation packet, and
• wherein said film has a first diffusion resistance with respect to gas diffusion through said film from said inner film surface to said outer film surface outwardly out of said insulation packet and a second diffusion resistance with respect to gas diffusion through said film from said outer film surface to said inner film surface inwardly into said insulation packet, wherein said second diffusion resistance is different from said first diffusion resistance.

In an aircraft including an outer skin, an inner trim component that is arranged spaced from said outer skin with an interspace therebetween and that bounds an interior cabin therein, and an insulation arrangement including an insulation packet disposed in said interspace;

• an improvement of said insulation arrangement, wherein
• said insulation packet comprises an insulation material and a gas permeable film that completely surrounds and encases said insulation material,
• said film includes a first film section on a side of said insulation packet oriented toward said outer skin and a second film section on a side of said insulation packet oriented toward said inner trim component,
• said second film section is a water vapor barrier that hinders water vapor from permeating into said insulation packet through said second film section, and
• said first film section is a water vapor permeable film that allows water vapor to permeate out of said insulation packet through said first film section.