Composite fabric with controlled release of functional chemicals

The fabric is of a composite construction and includes an air and liquid permeable nonwoven fabric substrate and an air and liquid permeable layer of thermoplastic resin adhered to one surface of the nonwoven fabric substrate and forming one of the exposed surfaces of the composite fabric. A functio...

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Bibliographische Detailangaben
Hauptverfasser:	ANGELINI PETER J, BAKER JOHN F.JR
Format:	Patent
Sprache:	eng
Schlagworte:	BRAIDING COTTON-WOOL FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS KNITTING LACE-MAKING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL NON-WOVEN FABRICS PERFORMING OPERATIONS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TEXTILES TRANSPORTING TRIMMINGS WADDING
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Beschreibung
Zusammenfassung:	The fabric is of a composite construction and includes an air and liquid permeable nonwoven fabric substrate and an air and liquid permeable layer of thermoplastic resin adhered to one surface of the nonwoven fabric substrate and forming one of the exposed surfaces of the composite fabric. A functional chemical is incorporated in the thermoplastic resin layer. Preferably, the liquid permeable layer is a polyolefin film having a plurality of liquid permeable apertures extending therethrough. The functional chemical is blended with the polyolefin resin so that it is present throughout the film layer. The functional chemical diffuses from the film layer to provide for controlled release of the active functional chemical at an optimum duration and rate.