| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a frequency selecting plate-laminated fiber-reinforced plastic panel effectively prevented from interlayer delamination without forming an air trap between a frequency selecting plate and a core material by a vacuum resin transfer molding method. SOLUTION: A liquid adhesive 2 comprising a two-pack type epoxy resin or the like is uniformly applied to the upper and under surfaces of the core material 1 selected from a foam material, a syntactic foam material and wood and the frequency selecting plate 5 equipped with a plurality of through-holes 4 are laminated on the coated core material 1. After the liquid adhesive 2 is applied to the upper and under surfaces of the core material 1, the frequency selecting plates 5, each of which is obtained by respectively forming a plurality of the through-holes 4 to a metal foil 3 between the patterns thereof, are laminated on both surfaces of the core material 1 and the whole of the frequency selecting plates 5 is uniformly leveled by a brush or an iron to be integrally formed on the core material 1. At this time, the air bubbles, which get mixed in the gaps between the core material 1 and the frequency selecting plates 5 from the through-holes 4 formed to the selecting plates 5, or the air issued from the surface of the core material 1 is pushed to the sides opposite to the adhesive surfaces of the core material 1 along with the flow of the liquid adhesive 2. COPYRIGHT: (C)2006,JPO&NCIPI |
