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1. WO2020107080 - ACOUSTIC ABSORPTION

Publication Number WO/2020/107080
Publication Date 04.06.2020
International Application No. PCT/AU2019/051314
International Filing Date 29.11.2019
IPC
G10K 11/16 2006.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
E04B 2/00 2006.01
EFIXED CONSTRUCTIONS
04BUILDING
BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
2Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
G10K 11/172 2006.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES;  METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
172using resonance effects
E04B 1/84 2006.01
EFIXED CONSTRUCTIONS
04BUILDING
BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
1Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
62Insulation or other protection; Elements or use of specified material therefor
74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
82specifically with respect to sound only
84Sound-absorbing elements
CPC
B32B 15/043
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
04comprising metal as the main or only constituent of a layer, ; which is next to another layer of the same or of a different material
043of metal
B32B 15/20
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
20comprising aluminium or copper
B32B 2250/03
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2250Layers arrangement
033 layers
B32B 2305/024
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2305Condition, form or state of the layers or laminate
02Cellular or porous
024Honeycomb
B32B 2307/102
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2307Properties of the layers or laminate
10having particular acoustical properties
102Insulating
B32B 2311/24
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2311Metals, their alloys or their compounds
24Aluminium
Applicants
  • ASHMERE HOLDINGS PTY LTD [AU]/[AU]
Inventors
  • AYRES, Colin
Agents
  • GRIFFITH HACK
Priority Data
201890457330.11.2018AU
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ACOUSTIC ABSORPTION
(FR) ABSORPTION ACOUSTIQUE
Abstract
(EN)
An acoustic panel (110, 210, 310, 410) (for absorbing sound) including a first sheet (112, 212, 312, 412) with spaced microperforations (114, 214, 314, 414) a second sheet (116, 216, 316, 416) with microperforations (118, 218, 318, 418) more widely spaced than the microperforations of the first sheet, and a first cellular core (120, 220, 320, 420) sandwiched between the first sheet and the second sheet. The panel can be spaced from a surface (126, 440), such as a wall. A second cellular core (328, 428) can be provided between the second sheet and a third sheet (334, 434). The third sheet is preferably solid without microperforations but can have microperforations (436). Noise Reduction Coefficient (NRG) can be 0.8.
(FR)
L'invention concerne un panneau acoustique (110, 210, 310, 410) (pour absorber le son) comprenant une première feuille (112, 212, 312, 412) dotée de microperforations espacées (114, 214, 314, 414), une seconde feuille (116, 216, 316, 416) dotée de microperforations (118, 218, 318, 418) plus largement espacées que les microperforations de la première feuille, et un premier noyau cellulaire (120, 220, 320, 420) pris en sandwich entre la première feuille et la seconde feuille. Le panneau peut être espacé d'une surface (126, 440), telle qu'une paroi. Un deuxième noyau cellulaire (328, 428) peut être placé entre la deuxième feuille et une troisième feuille (334, 434). La troisième feuille est de préférence solide sans microperforations mais peut présenter des microperforations (436). Le coefficient de réduction de bruit (NRG) peut être de 0,8.
Latest bibliographic data on file with the International Bureau