Insulation materials for a heat and sound insulated structure and methods of forming with a mold that is gas and liquid permeable

A system for forming insulation packages, the system comprising:

• a vessel configured to hold a slurry comprising a liquid and an insulation material;
• a supply conduit coupled at a first end with the vessel and having a second end coupled with an envelope for selectively supplying the slurry from the vessel to an interior cavity of the envelope;
• a vacuum chamber, wherein the second end of the supply conduit is disposed within the vacuum chamber;
• a mold comprising an inner mold liner at least partially defining a cavity for retaining the envelope therein and an outer mold shell at least partially surrounding the inner mold liner;
• a vacuum pump fluidly coupled with the vacuum chamber and configured to selectively decrease pressure within the vacuum chamber to a reduced pressure less than ambient pressure;
• a heating element disposed within the vacuum chamber;
• and
• a mixing blade configured to mix components of the slurry.