POLYESTER YARN FOR ADHESIVE TAPE FABRIC BASE

PURPOSE:A polyester yarn whose intrinsic viscosity, strength, elongation, optical birefringence and density are in a specific range, individually, thus being used as a base fabric for extensible adhesive tapes, because it is low in strength and high in elongation. CONSTITUTION:The objective polyeste...

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Bibliographische Detailangaben
Hauptverfasser:	SUZUKI NOBUTERU, OGAWA MASARU
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY DYES LOOMS METALLURGY METHODS OF WEAVING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL OR ARTIFICIAL THREADS OR FIBRES NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL PAINTS POLISHES SPINNING TEXTILES USE OF MATERIALS AS ADHESIVES WEAVING WOVEN FABRICS
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Beschreibung
Zusammenfassung:	PURPOSE:A polyester yarn whose intrinsic viscosity, strength, elongation, optical birefringence and density are in a specific range, individually, thus being used as a base fabric for extensible adhesive tapes, because it is low in strength and high in elongation. CONSTITUTION:The objective polyester yarn has an intrinsic viscosity over 0.6, a strength of 1.5-3g/d, an elongation of 30-80%, an optical birefringence of 0.11-0.17 and a density of 1.38-1. 39. The yarn is reaidily produced by melt-extruding a polyester at a taking-up speed of 2,500-4,000m/min into an undrawn yarn with an intrinsic viscosity of over 0.6. The undrawn yarn is drawn at a ratio of over 1.05 and heat-set at 180-230 deg.C under a tension less than the natural draw ratio.