Composite non-woven sound absorption cotton

The utility model relates to the technical field of sound absorption materials and aims at providing composite non-woven sound absorption cotton which is good in sound absorption and thermal insulation. The composite non-woven sound absorption cotton comprises a sound absorption cotton main body, su...

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Bibliographische Detailangaben
Hauptverfasser:	SUN JIANLIN, DU SHANHUA, XIANG GONGRU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PERFORMING OPERATIONS PHYSICS SOUND-PRODUCING DEVICES TRANSPORTING
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Beschreibung
Zusammenfassung:	The utility model relates to the technical field of sound absorption materials and aims at providing composite non-woven sound absorption cotton which is good in sound absorption and thermal insulation. The composite non-woven sound absorption cotton comprises a sound absorption cotton main body, surface density is 100g/m -1000g/m , thickness ranges from 3mm to 30mm, the sound absorption cotton main body is formed by laying tiny filaments, a top surface non-woven fabric layer is compounded on the top surface of the sound absorption cotton main body, a bottom surface non-woven fabric layer is compounded on the bottom surface of the sound absorption cotton main body, the top surface non-woven fabric layer and the sound absorption cotton main body are fixed through pressing round points, and the bottom surface non-woven fabric layer and the sound absorption cotton main body are fixed through pressing round points. The sound absorption cotton main body is formed by laying the tiny filaments, and the composite non