Process for producing nonwoven fabric, and nonwoven fabric

Provided is a process for producing nonwoven fabric by conveying a thermoplastic-fiber-containing web to a heated support having a rugged shape and blowing hot air toward the support from above the web to impart a rugged shape to the web, the process including: a step in which the support is heated...

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Bibliographische Detailangaben
Hauptverfasser:	ARAI, MAO, KOMORI, YASUHIRO, KAWAGUCHI, HIROKO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BANDAGES, DRESSINGS OR ABSORBENT PADS BRAIDING COTTON-WOOL DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE KNITTING LACE-MAKING MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL MEDICAL OR VETERINARY SCIENCE NON-WOVEN FABRICS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PERFORMING OPERATIONS PROSTHESES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TEXTILES TRANSPORTING TREATMENT OR PROTECTION OF EYES OR EARS TRIMMINGS WADDING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Provided is a process for producing nonwoven fabric by conveying a thermoplastic-fiber-containing web to a heated support having a rugged shape and blowing hot air toward the support from above the web to impart a rugged shape to the web, the process including: a step in which the support is heated to a temperature in the range of from the glass transition point of the fibers constituting the web to the melting point thereof; a step in which the fibers of the web are provisionally fusion-bonded to one another by the blowing of first hot air so that the rugged shape is maintained; and a step in which second hot air that has a higher temperature than the first hot air is blown to fusion-bond the fibers of the web to one another in the state of retaining the rugged shape, thereby fixing the rugged shape.