| 摘要 |
<p>This invention relates to an improved method for the production of a pour-in-place composite article. These composite articles comprise an exterior covering and a flexible polyurethane foam core. This method comprises inserting a support armature into a pre-sewn exterior covering, positioning an exterior covering in a shaped mold, and applying pressurized gas to the outside surface of the exterior covering at the point directly opposite the position that the reaction mixture will be injected into the mold. The pressurized gas is either applied to the outside surface of the exterior covering either at some point prior to injection of the reaction mixture into the shaped mold, or the pressurized gas is applied simultaneously with the injection of the reaction mixture into the shaped mold. The application of pressurized gas is discontinued once the injection step is completed, allowing the reaction mixture to fully react and expand to conform the composite article to the shape of the mold. The resultant composite article is then removed from the mold.</p> |
