METHOD OF MANUFACTURING SOUNDPROOF SHEET AND SOUNDPROOF SHEET

A method of manufacturing a soundproof sheet includes a first accumulating step of producing a web in which a plurality of first fibers, which are natural fibers, and a plurality of second fibers including a first core portion and a first coating layer coating the first core portion and having a fir...

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Bibliographische Detailangaben
Hauptverfasser:	YAJIMA, Hideaki, OKAWA, Yuta
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SOUND-PRODUCING DEVICES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method of manufacturing a soundproof sheet includes a first accumulating step of producing a web in which a plurality of first fibers, which are natural fibers, and a plurality of second fibers including a first core portion and a first coating layer coating the first core portion and having a first melting point are mixed, a heating step of heating the web to melt the first coating layer, a first cooling step of cooling the web in a state where the first coating layer is melted to solidify the first coating layer, a pressurized heating step of heating the web to melt the first coating layer and applying a predetermined compressive force to the web, and a second cooling step of cooling the web subjected to the pressurized heating step to a temperature lower than the first melting point to solidify the first coating layer.