Patent ID: 7832068
Filing Date: 2010-11-16
Classification: B29C,D02J,D04H

Abstract:
1. A method of producing a spread multi-filament bundle comprising the steps of: subjecting a multi-filament bundle in carriage to fluctuation of a tensile force applied to the bundle alternatively between tension and relaxation by locally and reciprocally pressing the bundle fed from a yarn supplier crosswise with regard to a moving course of the bundle; passing in suspension the multi-filament bundle moving under the fluctuation through a fluid flowing portion; subjecting the multi-filament bundle to fluidal resistance while the bundle is moving through the fluid flowing portion so as to bend the bundle towards a direction to which a fluid in use flows; and flowing the fluid through an interstice between any adjacent monofilaments of the bundle whose bonding is slackened due to the fluidal resistance so as to widen the interstice, thereby, promoting spreading operation on the bundle so as to widely spread the multi-filament bundle.