SELF-CRIMPING CONJUGATE FILAMENT AND SEAMLESS BAND FORMED THEREFROM AND METHOD OF MAKING SAME

Side-by-side conjugate filaments made from thermoplastic elastomers and spunbond-type polypropylenes exhibit an extremely high propensity to selfcrimp. At appropriate polymer ratios and processing conditions (with mechanical or aerodynamical drawing) the crimp develops spontaneously after relaxation...

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Bibliographische Detailangaben
Hauptverfasser:	GRIESBACH, HENRY LOUIS, III, SASSE, PHILIP ANTHONY
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES
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Beschreibung
Zusammenfassung:	Side-by-side conjugate filaments made from thermoplastic elastomers and spunbond-type polypropylenes exhibit an extremely high propensity to selfcrimp. At appropriate polymer ratios and processing conditions (with mechanical or aerodynamical drawing) the crimp develops spontaneously after relaxation of the attenuation force. The amount of crimp and the degree of elastic properties depend on the elastomer content and the processing conditions. The resulting crimp is typically in the range of 25-200 crimps per inch. This combination of exceptionally high crimp and an elastomer component imparts stretch and recovery properties. The filaments can be wrapped around a cylindrical supporting structure to create a continuous, seamless elastic band, useful for body-fit articles.