Fishing line comprising integrated composite yarn comprising short fiber

Abstract

The present invention provides a fishing line comprising a composite yarn having a core-sheath structure, where the composite yarn comprises a core part having a core yarn containing a short fiber and a sheath part having a sheath yarn containing a long fiber; the long fiber in the sheath part and the short fiber in the core part are intertangled with each other; and the core yarn and the sheath yarn are integrated with use of an adhesive resin. The fishing line of the present invention has a robust core-sheath structure which prevents nude yarn or nep from being developed, excellent operability, adjustable specific gravity, excellent tensile strength, high weatherability and water resistance, low water content, low elongation rate, and low probability of unravelling constituent fibers at a cut site.

1 . A fishing line comprising a composite yarn having a core-sheath structure, the composite yarn comprising a core part having a core yarn containing a short fiber and a sheath part having a sheath yarn containing a long fiber, the core yarn and the sheath yarn being integrated with use of an adhesive resin. 
     
     
         2 . The fishing line according to  claim 1 , wherein single yarns of the short fiber in the core yarn are overlapped, intertangled or intertwisted. 
     
     
         3 . The fishing line according to  claim 1 , wherein the fiber length of the short fiber in the core yarn is 5 to 500 mm. 
     
     
         4 . The fishing line according to  claim 1 , wherein the specific gravity of the short fiber in the core yarn is 1.0 or more. 
     
     
         5 . The fishing line according to  claim 1 , wherein the short fiber in the core yarn is used for adjusting the specific gravity of the fishing line. 
     
     
         6 . The fishing line according to  claim 1 , wherein the short fiber in the core yarn comprises at least one kind selected from the group consisting of a synthetic fiber, a regenerated fiber, a metal fiber, a ceramic fiber, and a glass fiber. 
     
     
         7 . The fishing line according to  claim 1 , wherein the short fiber in the core yarn comprises a polyester fiber, a glass fiber, or a fluororesin. 
     
     
         8 . The fishing line according to  claim 1 , wherein the long fiber in the sheath yarn comprises a super strength fiber. 
     
     
         9 . The fishing line according to  claim 1 , wherein the super strength fiber comprised in the long fiber in the sheath yarn accounts for 12% by weight or more of the whole composite yarn. 
     
     
         10 . The fishing line according to  claim 8 , wherein the super strength fiber is an ultra high molecular weight polyethylene fiber having a molecular weight of 300,000 or more. 
     
     
         11 . The fishing line according to  claim 1 , wherein the sheath yarn in the sheath part is braded around the core yarn. 
     
     
         12 . The fishing line according to  claim 1 , wherein the sheath yarn in the sheath part is wound around the core yarn. 
     
     
         13 . The fishing line according to  claim 1 , wherein the long fiber in the sheath yarn and the short fiber in the core yarn are intertangled. 
     
     
         14 . The fishing line according to  claim 1 , which has a history of a drawing treatment under heating or without heating in a production process of the composite yarn. 
     
     
         15 . The fishing line according to  claim 1 , wherein the long fiber comprises an ultra high molecular weight polyethylene fiber and the short fiber comprises a fluororesin fiber. 
     
     
         16 . The fishing line according to  claim 1 , wherein the adhesive resin is a hot melt adhesive. 
     
     
         17 . The fishing line according to  claim 1 , wherein the adhesive resin is a polyolefin copolymer, a polyester copolymer, or a polyamide copolymer. 
     
     
         18 . The fishing line according to  claim 16 , wherein the hot melt adhesive is a reactive hot melt adhesive. 
     
     
         19 . The fishing line according to  claim 1 , wherein the adhesive resin comprises a polyolefin resin and a polyurethane resin of which the glass transition point is 30° C. or higher. 
     
     
         20 . The fishing line according to  claim 19 , wherein the polyolefin resin is a modified polyolefin resin comprising (A1) an unsaturated carboxylic acid or an anhydride thereof, (A2) an olefin hydrocarbon, and (A3) at least one compound selected from the group consisting of an acrylate ester, a maleate ester, a vinyl ester, and acrylamide. 
     
     
         21 . The fishing line according to  claim 1 , wherein the adhesive resin contains metal particles. 
     
     
         22 . The fishing line according to  claim 1 , wherein two or more core yarns or two or more sheath yarns are paralleled, twisted, or braided. 
     
     
         23 . The fishing line according to  claim 1 , wherein the outermost layer is coated with a resin.