Abstract: A storage rack is mounted on a wall panel via a reinforcing thin sheet and a synthetic resin rivet. The reinforcing thin sheet is mounted on the inner surface of the surface member at a location at which the storage rack is arranged. A rivet insertion hole is formed penetrating the surface member and the reinforcing thin sheet. Leg pieces of the pre-assembled rivet are inserted into the rivet insertion hole from the mounting hole in the storage rack, and a flange portion is brought into contact with a second vertical panel. An expanding shaft portion of the expansion member (30) is pushed into an inner peripheral portion of an expanded member, forming leg piece parts expanded to a dimension larger than the diameter of the rivet insertion hole on the leg piece parts projecting from the reinforcing thin sheet.

Abstract: A lavatory mirror is attached to a wall board via a plurality of fasteners including synthetic resin female members and synthetic resin male members. The synthetic resin male members are attached at a plurality of locations on a rear surface of the lavatory mirror at intervals, and positioned within the outline of the lavatory mirror. The synthetic resin female members are attached at locations on the wall board corresponding to the male members attached to the rear surface of the lavatory mirror. The plurality of female members includes a female tubular portion inside of which a male tubular portion of the corresponding male members is inserted, whereby a female locking portion and a male locking portion are locked with each other. The lavatory mirror is attached to the wall board with a raised portion abutting on a male mounting board portion of the male member.

Abstract: An aircraft interior panel material includes a core member and surface members attached to both surfaces of the core member. The core member includes a plate member composed of balsa wood and having a rectangular shape and uniform thickness. Both surfaces of the plate member in the thickness direction are flat surfaces. Balsa wood is a light weight natural material whereby environmental impact can be reduced. Both surfaces of the plate member in the thickness direction are impregnated with flame retardant, which reduces the flammability of the balsa wood. Impregnation of the plate member with the flame retardant may be performed by: spraying the flame retardant; by immersing the plate member in the flame retardant; or upon the plate member being immersed in the flame retardant, by applying a pressure larger than the pressure at the depth where the plate member is immersed or cycles thereof to the plate member.