| 摘要 |
A method of manufacturing a composite sandwich structure, the method comprising a preform assembly method. The method comprises providing a preform ( 8 ) comprising at least two sheets ( 12, 14 ) connected by a plurality of extensible threads ( 16 ), and affixing to the outer face of each sheet ( 12, 14 ), a face sheet ( 18, 22 ). The adhesion is by a film adhesive ( 20, 24 ) placed over the respective sheets ( 12, 14 ), and the preform ( 8 ) is subjected to pressure or heat to set the film adhesive ( 20, 24 ). The method further comprises a method of molding a composite sandwich structure, the method comprising placing a preform ( 8 ) in a mold ( 30 ), creating pressure differentials between respective chambers ( 40, 42 ) within the mold ( 30 ), feeding a resinous compound into the mold ( 30 ), and allowing the resinous compound to set and cure. The invention also provides composite sandwich structures made in accordance with the methods. |
