| 摘要 |
<p>An insulation article usable either by itself or to provide an increased efficiency to a fibrous insulating medium (1) comprises a first plastic sheet (20) with closed cells of entrapped air bonded to a metal foil sheet (24) in turn bonded to a layer formed from a sheet of paper (26) or other moisture absorbing material. Passages (30) are formed through each of the layers (20, 24, 26) to permit the passage of vapor and to regulate the flow of thermal energy.</p> |
