| 摘要 |
<p>Composite sandwich panels (10) that include a core (12) having a permeable body that is sandwiched between two skins (18, 20). An internal barrier (22) is located between the skins (18, 20) and the core (12) to provide an impermeable chamber (28) surrounding the permeable core (12). The chamber (28) is pressurized during formation of the panel (10) to provide an interior counter pressure against the mold/press used to form the panel (10). The counter pressure applied by the chamber (28) reduces the amount of voids in the skins (18, 20) and improves the surface finish of the skins (18, 20). In addition, the impermeable material remains within the finished panel to provide an internal barrier surrounding the core (12). <IMAGE></p> |
