Fremgangsmåte for fremstilling av en lyd- og vibrasjonsdempende sandwichplate, og et panel fremstilt ved hjelp av fremgangsmåten, samt en lyd-og vibrasjonsdempende konstruksjon for bruk som en vegg, et tak eller et gulv

摘要

A sound insulating structure (12) comprises first plates (30) arranged in coplanar and contiguous relationship in order to form a first structural layer, second plates (13) arranged in coplanar relationship in order to form a second structural layer in spaced parallel relation with said first structural layer, and a core (6), which core effectively bridges the space between and adheres together plates of the respective layers, and which core comprises an elastic, vibration deadening mass. According to the invention at least one through opening is provided in each of said second plates with the purposes of permitting escape of any trapped air and of inspecting the space between the structural layers while the mass in the core sets to an elastic state. The invention also provides a panel and a method of manufacturing a sandwich board.