ELECTROMAGNETIC-WAVE SHIELD MATERIAL HAVING DAMPING AND SOUND-INSULATING QUALITY

PROBLEM TO BE SOLVED: To accomplish simultaneously by only one-sheet of material a damping, sound-insulation, and electromagnetic-wave shield, by forming the one-sheet of material out of a protective layer stuck on one-side surface of a damping and sound-insulating layer and an electromagnetic-wave...

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Bibliographische Detailangaben
Hauptverfasser:	SOUDAI KIMITOYO, OZEKI HAJIME
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR BUILDING CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CEILINGS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS INSULATION OR OTHER PROTECTION OF BUILDINGS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PERFORMING OPERATIONS PHYSICS PRINTED CIRCUITS ROOFS SOUND-PRODUCING DEVICES TRANSPORTING WALLS, e.g. PARTITIONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To accomplish simultaneously by only one-sheet of material a damping, sound-insulation, and electromagnetic-wave shield, by forming the one-sheet of material out of a protective layer stuck on one-side surface of a damping and sound-insulating layer and an electromagnetic-wave shield layer stuck on its other-side surface. SOLUTION: As a damping and sound-insulating layer 1 forming the central portion of an electromagnetic-wave shield material, there is used a layer wherein a reformed asphalt is mixed in the weight ratio of 50:50 with the adequate mixture of iron sand, slug, and iron powder, etc., having specific weights of 4.0 to 5.5 and grain sizes not larger than 2 mm which are generally large specific weights or mixed with one single- substance of them. On one-side surface of the damping and sound-insulating layer 1, a protective layer 2 made of a synthetic-fiber nonwoven-fabric is stuck, and on its other-side surface a low-carbon steel plate is stuck to form an electromagnetic-wave shield layer 3. In this way, the electromagnetic-wave shield material having a damping and sound-insulating quality has a triple structure comprising the three layers of the central damping and sound-insulating layer 1, the protective layer 2 covering one-side surface of both the side surfaces of the layer 1, and the electromagnetic-wave shield layer 3 covering its other-side surface.