P
USRE45778EActiveUtilityPatentIndex 57

Composite fishing line

Assignee: PURE FISHING INCPriority: Oct 18, 2010Filed: Aug 26, 2013Granted: Oct 27, 2015
Est. expiryOct 18, 2030(~4.3 yrs left)· nominal 20-yr term from priority
Inventors:COOK ROGERTHELEN JIMMEYER JOE
D02G 3/444D02G 3/02A01K 91/00D07B 2205/2071D07B 2201/2036D07B 2501/2038D07B 1/025D07B 2201/1096B29K 2023/0683Y10T428/2929D07B 2205/2014D10B 2507/00D02J 1/22D10B 2321/0211D07B 5/12D10B 2321/042D07B 2201/1016B29K 2027/18D07B 2205/2039D07B 2201/104B29C 55/04D02G 3/26
57
PatentIndex Score
3
Cited by
67
References
40
Claims

Abstract

Braided or twisted lines made from a) gel spun polyolefin yarns and b) at least one other yarn or monofilament are stretched to increase line tenacity. If desired, stretching conditions can also be chosen to significantly reduce the denier of the line.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A composite fishing line with a net negative buoyancy in water, said fishing line comprising:
 (a) a first line component consisting essentially of a first yarn of filaments made of ultrahigh molecular weight, high tenacity, polyolefin filaments, and 
 (b) a second line component comprising a second yarn or a monofilament selected from the group consisting of: 
 (A) partially-oriented filament yarns comprising partially oriented (i) poly(trimethylene terephthalate) yarn, (ii) poly(trimethylene terephthalate)/poly(alpha-hydroxy acid) biconstituent filaments, (iii) polyethylene terephthalate, (iv) nylon, (v) polyamides and copolymers of polyamides, or (vi) polyvinylidene fluoride; 
 (B) poly(tetrafluoroethylene); and 
 (C) expanded poly(tetrafluoroethylene), said second line component exhibiting a specific gravity of greater than 1.0, 
 wherein said composite fishing line has been re-drawn by stretching said composite fishing line under tension and heat at conditions sufficient to increase tenacity of the resulting fishing line by at least 10% relative to its tenacity before the stretching. 
 
     
     
       2. A composite fishing line according to  claim 1  wherein said first yarn is made with filaments of polyethylene that exhibit a tenacity of at least 15 g/denier and a tensile modulus of at least 500 g/denier. 
     
     
       3. A composite fishing line according to  claim 2  wherein said second filamentous line component is made with said second yarn that comprises filaments of expanded poly(tetrafluoroethylene) or poly(tetrafluoroethylene). 
     
     
       4. A composite fishing line according to  claim 1  comprising 2-5 first component yarns of said first line component and 2-5 second component yarns of said second line component. 
     
     
       5. A composite fishing line according to  claim 4  wherein said first line component and said second component have been braided or twisted together to form said composite fishing line. 
     
     
       6. A composite fishing line according to  claim 5  wherein said fishing line has been re-drawn by stretching the composite fishing line under tension and heat at conditions sufficient to increase tenacity of the resulting fishing line by at least about 15% relative to its tenacity before the stretching. 
     
     
       7. A composite fishing line according to  claim 6  wherein said fishing line has been re-drawn by stretching the composite fishing line at a temperature within the range of about 110° C. to about 160° C. and at a total draw ratio within the range from about 1% to about 1000%. 
     
     
       8. A composite fishing line according to  claim 6  wherein said fishing line has been re-drawn at a temperature within the range of about 135° C. to about 155° C. 
     
     
       9. A process for increasing tenacity in a sinking, composite fishing line comprising: (a) a first line component consisting essentially of a first yarn of filaments made of ultrahigh molecular weight, high tenacity, polyolefin and (b) a second line component comprising a second yarn or a monofilament, said second component exhibiting a specific gravity of greater than 1.0; said process comprising a step of:
 stretching the composite fishing line under tension and heat at conditions sufficient to increase tenacity of the resulting fishing line by at least 10% relative to its tenacity before the stretching. 
 
     
     
       10. A process according to  claim 9  wherein the stretching step comprises stretching said composite fishing line at a temperature within the range of about 135° C. to about 155° C. 
     
     
       11. A process according to  claim 10  wherein the stretching step comprises stretching said composite fishing line to a total draw ratio within the range from about 1.01 to about 9.0. 
     
     
       12. A process according to  claim 9  wherein said first yarn consists essentially of filaments of polyethylene that exhibit a tenacity of at least 15 g/denier and a tensile modulus of at least 500 g/denier. 
     
     
       13. A process according to  claim 12  wherein said second line component comprises a second yarn that comprises an oriented or partially oriented polymer. 
     
     
       14. A process according to  claim 13  wherein said second yarn comprises filaments of expanded poly(tetrafluoroethylene). 
     
     
       15. A process according to  claim 13  wherein the stretching step comprises
 stretching said composite fishing line to a total draw ratio within the range from about 1.05 to about 3.0. 
 
     
     
       16. A process according to  claim 13  wherein the stretching step comprises
 stretching said composite fishing line to a total draw ratio within the range from about 1.1 to about 2.0. 
 
     
     
       17. A process according to  claim 13  wherein the stretching step comprises
 stretching said composite fishing line to a total draw ratio within the range from about 1.25 to about 1.5. 
 
     
     
       18. A composite fishing line according to  claim 1  wherein said second line component comprises a partially-oriented polyethylene terephthalate yarn. 
     
     
       19. A composite fishing line according to claim 2 wherein said first line component and said second component have been braided or twisted together to form said composite fishing line that exhibits a sinking rate of less than 2.5 in/s. 
     
     
       20. A composite fishing line according to claim 19 wherein said fishing line has been re-drawn by stretching the composite fishing line under tension and heat at conditions sufficient to increase tenacity of the resulting fishing line by at least about 15% relative to its tenacity before the stretching. 
     
     
       21. A composite fishing line according to claim 19 wherein said fishing line has been re-drawn by stretching the composite fishing line at a temperature within the range of about 110° C. to about 160° C. and at a total draw ratio within the range from about 1% to about 1000%. 
     
     
       22. A composite fishing line according to claim 21 wherein said fishing line has been re-drawn at a temperature within the range of about 140° C. to about 160° C. 
     
     
       23. A braided or twisted composite fishing line comprising 3-64 yarns of first and second line components that have been subjected to heated reorientation by re-drawing the composite fishing line under a suitable combination of tension, heat and time to irreversibly lengthen said composite line while reducing its diameter and increasing its tenacity of the resulting re-drawn fishing line relative to its as-braided or as-twisted state, wherein:
 (a) said first line component consists essentially of first filament yarns of highly oriented, ultrahigh molecular weight, high tenacity, polyethylene filaments, whereby said first filament yarns exhibit a tenacity within the range of about 35-50 g/d, and   (b) said second line component consists essentially of second filament yarns of expanded poly(tetrafluoroethylene), said second line component exhibiting a specific gravity of greater than 1.0.   
     
     
       24. A braided or twisted composite fishing line comprising 3-64 yarns of first and second line components, wherein:
 (a) said first line component consists essentially of first filament yarns of ultrahigh molecular weight, high tenacity, polyethylene filaments, and   (b) said second line component consists essentially of second filament yarns of expanded poly(tetrafluoroethylene), said second line component exhibiting a specific gravity of greater than 1.0, wherein said composite fishing line is in the form of a braided, composite, fishing line made by braiding 40-600 denier yarns into a composite fishing line that is then stretched under tension and heat at conditions sufficient to increase tenacity of the resulting stretched, braided, composite fishing line by at least 10% relative to its tenacity before the stretching.   
     
     
       25. A composite fishing line according to claim 24 wherein said fishing line has an even number of yarns of each of said first line component and said second line component and which are of substantially equal denier of each yarn. 
     
     
       26. A fishing line according to claim 24 comprising 3-64 filament yarns in total that have been braided together before stretching. 
     
     
       27. A composite fishing line with a net negative buoyancy in water, said fishing line comprising filaments that consist essentially of:
 (a) a first line component consisting essentially of first filament yarns of ultrahigh molecular weight, high tenacity, polyethelene filaments, and   (b) a second line component consisting essentially of second filament yarns of expanded poly(tetrafluoroethylene), said second line component exhibiting a specific gravity of greater than 1.0,   wherein said composite fishing line has been re-drawn in a substantially irreversible manner by stretching said composite fishing line under tension and heat at conditions sufficient to increase tenacity of the resulting fishing line by at least 10% relative to its tenacity before the stretching.   
     
     
       28. A fishing line according to claim 27 wherein the stretched, braided, composite fishing line exhibits a sinking rate of less than 2.5 in/s. 
     
     
       29. A fishing line according to claim 27 comprising 3-16 filament yarns in total that have been braided together before stretching. 
     
     
       30. A composite fishing line according to claim 28 comprising 2-5 yarns of said first line component and 2-5 yarns of said second line component. 
     
     
       31. A fishing line according to claim 27 wherein said fishing line is made with filament yarns that each exhibit a size within the range of about 20 denier to about 600 denier if braided and within the range of about 20-1200 denier if twisted. 
     
     
       32. A fishing line according to claim 31 that has been stretched in a post-formation drawing process in which composite fishing line is heated in at least one oven, and the heated composite fishing line is passed from an oven over and around a draw roller that turns at a slightly faster rate than the speed at which the heated composite fishing line exits said oven. 
     
     
       33. A fishing line according to claim 31 wherein adjacent filaments of said ultrahigh molecular weight, high tenacity, polyethylene filaments are fused. 
     
     
       34. A process according to claim 9 wherein said composite line is a braid of 3-16 yarns of said first line component and said second line component. 
     
     
       35. A process according to claim 34 wherein each of said composite line exhibits a size within the range of about 200 denier to about 1200 denier. 
     
     
       36. A process according to claim 9 wherein said composite line is a twisted composite of yarns of (a) said first line component and (b) said second line component, wherein said composite fishing line exhibits a neutral net twist. 
     
     
       37. A process according to claim 36 wherein each of said composite line exhibits a size within the range of about 20 denier to about 1200 denier. 
     
     
       38. A process for increasing tenacity in a sinking, composite fishing line with a braided construction of 3-16 yarns of (a) ultrahigh molecular weight, high tenacity, polyethylene filaments and (b) expanded polytetrafluoroethylene filaments, each yarn exhibiting a size within the range of about 40 to about 600 denier, said process comprising:
 stretching the braided, composite fishing line under tension and heat at conditions in a substantially continuous process that are sufficient to increase tenacity of the resulting stretched, braided, composite fishing line by at least 10% relative to its tenacity before the stretching.   
     
     
       39. A process according to claim 38 wherein the stretched, braided composite exhibits a sinking rate of less than about 2.5 in/s. 
     
     
       40. A process according to claim 39 wherein the stretched, braided composite exhibits a sinking rate of less than about 2.0 in/s.

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