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US 2006/0137156 A1Published application
Method of producing a spread multi-filament bundle and an apparatus used in the same
AssigneeFukui Prefectural Government
InventorsKazumasa Kawabe, Shigeru Tomoda
Life of this patent
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Abstract
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.
Claims18
A method of producing a spread multi-filament bundle comprising the steps of:
- unwinding and feeding a multi-filament bundle from a yarn supplier;
- passing in suspension said multi-filament bundle as fed through a plurality of fluid flowing portions in succession comprising a fluid flowing spreader, said portions being disposed in series along a moving course of said multi-filament bundle;
- subjecting said multi-filament bundle to fluidal resistance while said bundle moving through said respective fluid flowing portions so as to bend said bundle towards a direction to which a fluid in use flows;
- and flowing said fluid through an interstice between any adjacent monofilaments of said bundle whose bonding is slackened due to said fluidal resistance so as to widen said interstice, thereby, promoting spreading operation on said bundle, wherein said multi-filament bundle to be subjected to said spreading operation is continuously passed through said fluid flowing portion located in an upstream side to said fluid flowing portion located in a downstream side in succession to gradually enlarge contact area between said bundle and said fluid so as to widely spread said multi-filament bundle in a progressive manner.
1 more element
A method of producing a spread multi-filament bundle comprising the steps of:
- subjecting said multi-filament bundle in carriage to fluctuation of a tensile force applied to said bundle alternatively between tension and relaxation by locally and reciprocally pressing said bundle fed from a yarn supplier crosswise with regard to a moving course of said bundle;
- passing in suspension said multi-filament bundle moving under said fluctuation through a plurality of fluid flowing portions in succession comprising a fluid flowing spreader, said portions being disposed in series along a moving course of said multi-filament bundle;
- subjecting said multi-filament bundle to fluidal resistance while said bundle moving through said respective fluid flowing portions so as to bend said bundle towards a direction to which a fluid in use flows;
- and flowing said fluid through an interstice between any adjacent monofilaments of said bundle whose bonding is slackened due to said fluidal resistance so as to widen said interstice, thereby, promoting spreading operation on said bundle, wherein said multi-filament bundle to be subjected to said spreading operation is continuously passed through said fluid flowing portion located in an upstream side to said fluid flowing portion located in a downstream side in succession to gradually enlarge contact area between said bundle and said fluid so as to widely spread said multi-filament bundle in a progressive manner.
1 more element
A method of producing a spread multi-filament bundle comprising the steps of:
- subjecting said multi-filaments in carriage to fluctuation of a tensile force applied to said bundle alternatively between tension and relaxation by locally and reciprocally pressing said bundle fed from a yarn supplier crosswise with regard to a moving course of said bundle;
- passing in suspension said bundle moving under said fluctuation through a plurality of fluid flowing portions in succession comprising a fluid flowing spreader, said portions being disposed in series along said moving course of said bundle;
- and providing a linearly back-and-forth friction widthwise with regard to said bundle in a process of being spread, through any adjacent monofilaments of which bundle a fluid flows with said tensile force applied to said bundle fluctuated alternatively between tension and relaxation at said respective fluid flowing portions.
A method of producing a spread multi-filament bundle comprising the steps of feeding a group of a number of multi-filament bundles unwound from respective yarn suppliers of a creel with aligned in parallel and in the same plane;
- passing in suspension said group of said multi-filament bundles respectively as fed through a plurality of fluid flowing portions in succession comprising a fluid flowing spreader, said portions being disposed in series along a moving course of said respective multi-filament bundles;
- subjecting said respective multi-filament bundles to fluidal resistance while said bundles respectively moving through said respective fluid flowing portions so as to bend said respective bundles towards a direction to which a fluid in use flows;
- and flowing said fluid through an interstice between any adjacent monofilaments of said respective bundles whose bonding is slackened due to said fluidal resistance so as to widen said interstice, thereby, promoting spreading operation on said respective bundles;
- and subjecting a group of spread multi-filament bundles in carriage to fluctuation of a tensile force applied to said respective bundles alternatively between tension and relaxation by locally and reciprocally pressing said group of said spread multi-filament bundles moving in the same plane crosswise with regard to a moving course of said respective bundles, thereby, further promoting spreading operation by said respective fluid flowing portions.
1 more element
A method of producing a spread multi-filament bundle comprising the steps of:
- feeding a group of a number of multi-filament bundles unwound from respective yarn suppliers of a creel with aligned in parallel and in the same plane;
- passing in suspension said group of said multi-filament bundles respectively as fed through a plurality of fluid flowing portions in succession comprising a fluid flowing spreader, said portions being disposed in series along a moving course of said respective multi-filament bundles;
- subjecting said respective multi-filament bundles to fluidal resistance while said bundles respectively moving through said respective fluid flowing portions so as to bend said respective bundles towards a direction to which a fluid in use flows;
- and
- flowing said fluid through an interstice between any adjacent monofilaments of said respective bundles whose bonding is slackened due to said fluidal resistance so as to widen said interstice, thereby, promoting spreading operation on said respective bundles;
- providing a linearly back-and-forth friction widthwise with regard to a group of spread multi-filament bundles moving in the same plane so as to produce a spread multi-filament bundles sheet with fringe side monofilaments of any adjacent spread bundles tangentially aligned and monofilaments as a whole of said respective spread bundles uniformly distributed in density.
3 more elements
A method of producing a spread multi-filament bundle comprising the steps of:
- feeding a group of a number of multi-filament bundles unwound from respective yarn suppliers of a creel with aligned in parallel and in the same plane;
- passing in suspension said group of said multi-filament bundles respectively as, fed through a plurality of fluid flowing portions in succession comprising a fluid flowing spreader, said portions being disposed in series along a moving course of said respective multi-filament bundles;
- subjecting said respective multi-filament bundles to fluidal resistance while said bundles respectively moving through said respective fluid flowing portions so as to bend said respective bundles towards a direction to which a fluid in use flows;
- and flowing said fluid through an interstice between any adjacent monofilaments of said respective bundles whose bonding is slackened due to said fluidal resistance so as to widen said interstice, thereby, promoting spreading operation on said respective bundles;
- and subjecting respective spread multi-filament bundles in carriage to fluctuation of a tensile force applied to said respective spread bundles alternatively between tension and relaxation by locally and reciprocally pressing a group of said spread multi-filament bundles moving in the same plane crosswise with regard to a moving course of said respective bundles, thereby, further promoting spreading operation by said respective fluid flowing portions;
- providing a linearly back-and-forth friction widthwise with regard to said group of said spread multi-filament bundles moving in the same plane so as to produce a spread multi-filament bundles sheet with fringe side monofilaments of any adjacent spread bundles tangentially aligned and monofilaments as a whole of said respective spread bundles uniformly distributed in density.
3 more elements
An apparatus for producing a spread multi-filament bundle comprising one of a supplier and a creel provided with a number of said suppliers;
- a multi-filament bundle feeder to unwind one of a multi-filament bundle and a group of said multi-filament bundles from one of said supplier and said suppliers of said creel under a certain tension and to feed one of said multi-filament bundle and said group of multi-filament bundles with a restraint being drawn back while keeping one of said multi-filament bundle and said group of multi-filament bundles in a plane;
- a fluid flowing spreader provided with a plurality of fluid flowing portions disposed in series along a moving course of one of said bundle and said group of bundles respectively to put a fluid into contact with and pass said fluid through one of said bundle and said group of bundles with one of said bundle and said group of bundles in carriage supported in suspension, said fluid flowing crosswise with regard to said moving course;
- and a tensile force variable system to change a tensile force applied to one of said bundle and said group of bundles in carriage alternatively between tension and relaxation.
Dependencies are inferred from the claim text.