Fukui Prefectural Government

Other

Hokushin Co., Ltd

Fukui Prefectural Governmant

Shigeru Tomoda

Kazumasa Kawabe

Kenshiro Koizumi

A method and a device for opening a fiber bundle, capable of performing a fluctuating operation, at a high speed, of pushing a part of a conveyed fiber bundle by a contact member into a stress state and then separating the contact member from the fiber bundle so as to temporarily relax the fiber bundle, and also capable of reducing damage to the fiber bundle. The device for opening a fiber bundle includes a conveying portionfor pulling out a fiber bundle Tm from a yarn feeding bodyand conveying it in a fiber length direction, a fiber-opening processing portionfor opening the fiber bundle by moving a fiber in a width direction while bending the fiber by letting a fluid pass through the conveyed fiber bundle Tm, and a fluctuation imparting portionfor rotating a contact memberin a direction inclined with respect to a conveyance direction while bringing it into contact with the conveyed fiber bundle Tm and pushing a part of the fiber bundle Tm into a stress state, and then separating the contact memberfrom the fiber bundle Tm in the stress state so as to temporarily bring the fiber bundle Tm into a relaxed state.

Method and device for opening fiber bundle

A method of producing a spread multi-filament bundle along with an apparatus used in the same, by which a multi-filament bundle is spread with high speed and facility, and a high quality spread multi-filament bundle or sheet with the component monofilaments thereof aligned in parallel widthwise and uniformly distributed in density is produced. The multi-filament bundle in carriage is subject to fluctuation of a tensile force applied thereto 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, and the multi-filament bundle moving under the fluctuation passes in suspension through a fluid flowing portion, and the multi-filament bundle is subject to fluidal resistance while the bundle moving through the fluid flowing portion so as to bend the bundle towards a direction to which a fluid in use flows, and the fluid flows 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.

Method of producing a spread multi-filament bundle and an apparatus used in the same

A method of producing a spread multi-filament bundle and an apparatus is used in which an arbitrary number of multi-filament bundles of higher strength are simultaneously spread with high speed and a high-quality. A spread multi-filament bundle or sheet with the component monofilaments thereof aligned in parallel widthwise and uniformly distributed in density is produced. The respective multi-filament bundles fed from a yarn supplier or a creel are subjected to fluctuation of the tensile force applied thereto alternatively between tension and relaxation and the respective bundles as subjected to such fluctuation are passed in succession through a fluid flowing spreader.

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Fukui, Japan

Shigeru Tomoda