METHOD FOR MANUFACTURING AN ALVEOLAR SOUNDPROOFING STRUCTURE AND STRUCTURE THUS MANUFACTURED

摘要

BROADBAND SOUNDPROOFING SANDWICH PANEL AND MANUFACTURING METHOD USING A HEART OF 12 BEES NESTS PLACED BETWEEN TWO COATING SHEETS 14, 16, AND BINDED WITH THEM THROUGH AN ADHESIVE BONDING SYSTEM. ONE COATING SHEET 14 IS PERFORATED AND THE OTHER SIDE 16 NOT PERFORATED. A THIN SHEET OF FELT OR POROUS TISSUE IS BONDED TO THE OUTER SURFACE OF THE PERFORATED SHEET. THE ADHESIVE LAYER, AT LEAST BETWEEN THE PERFORATED SHEET AND THE POROUS FIBROUS MATERIAL, IS ENOUGH THICK TO PHYSICALLY ISOLATE THE TWO PARTS AND TO FORM AN OPENING IN THE FORM OF A FUNNEL SHRINKED TO THE ENTRANCE TO EACH PERFORATION.