| 摘要 |
<p>PURPOSE:To improve mold release properties by imparting favorable rigidity and making handling of raw fabric favorable, by a method wherein foaming phenolic resin powder is held temporarily on a surface material through heating, the surface material is laminated on both sides of a glass wool mat into which thermosetting resin infiltrated and foam molding is performed with a hot press mold. CONSTITUTION:Foaming phenolic resin powder 2 is spread over one side of a surface material 1 by making use of a spreading device 3. The surface material 1 is heated on both sides with a heater 4. In this instance, heating on the surface of the foaming phenolic resin powder 2 is constituted so that a temperature of the same will not raise up to the decomposition temperature of a foaming agent of the same nor to the reacting temperature of a curing agent of the same in the foaming phenolic resin powder. On the one hand, heating on the surface material 1 is performed so that the foaming phenolic resin powder 2 is cured. With this construction, the foaming phenolic resin powder 2, which has come into contact with the surface material 1, is cured and a thin filmy layer 10 is formed. The temporarily held surface materials 1 are laminated respectively and the same is set up to a hot press mold 9 constituted of a top and bottom forces 7, 8 for pressure molding. The foaming phenolic resin powder 2 held on to the surface material 1 is reacted for foaming and curing.</p> |
