JP2006129863A - Fishing line and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the trouble of the entanglement of a fishing line to a line-guide of a fishing rod by using a multifilament yarn as the fishing line and suppressing the twisting of the yarn. <P>SOLUTION: The fishing line is composed of a plurality of multifilament yarns and is produced by piling the yarns in a state that the value obtained by dividing the double of the twist number ratio of the first twist to the final twist by the number of the multifilament yarns to be twisted becomes ≥1.2 and ≤2.5. The entanglement of the fishing line to a guide caused by detwisting can be suppressed by the structure. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a fishing line and a method for manufacturing the same.

In general, the characteristics required for fishing lines include light weight, high strength, and long-lasting characteristics.
For the purpose of satisfying the above-described high strength, which is a weak point of nylon monofilaments that have been widely used as fishing lines, various covering threads have been proposed in which a sheath thread is wound around a core thread.
For example, a fishing line found in Patent Document 1 is provided for the purpose of providing a low-cost one that satisfies such high strength and that does not reduce productivity and does not reduce the wear resistance of the fishing line. Proposed.

This fishing line is a covering yarn in which a synthetic fiber multifilament yarn is arranged around a core yarn, and a synthetic fiber multifilament twisted yarn is wound around it as a sheath yarn, and the angle between the core yarn and the sheath yarn and the sheath yarn The difference from the twist angle is 25 ° or less.
By adopting such a configuration, the present invention was able to provide a fishing line that was excellent in mechanical properties such as excellent breaking strength and knot strength, low elongation at break, and excellent wear resistance. It is said.

JP-A-11-103737

However, in exchange for obtaining high strength using multifilament (twisted yarn), when fishing using such a twisted yarn, the yarn frequently turns and entangles with the guide of the fishing rod. It has become.
In addition, the inventor of the present application is not satisfied with the tensile strength that is effective in the above-described invention, and has sought further improvements.

  In view of the above-mentioned problems, the present invention intends to provide a fishing line that uses multifilament yarns, suppresses the turning of the above-mentioned yarns, and eliminates the messiness of getting involved in a fishing rod guide, and a method for manufacturing the same. To do.

In view of the above problems, the first invention of the present application has a plurality of multifilament yarns, and divides the numerical value twice the ratio of the number of twists of the lower twist and the upper twist by the number of multifilament yarns. There is provided a fishing line characterized in that the multifilament yarn is twisted so that the obtained value is 1.2 or more and 2.5 or less.
Twisting refers to adding one or more yarns and adding twists (bottom twisting), and arranging two or more yarns and twisting them in the direction opposite to the lower twisting (top twisting) (twisting yarns) Refers to a yarn in which two or more yarns are aligned and twisted in the opposite direction to the lower twist (JIS term). Generally called double twist.

  Further, in view of the above problems, the second invention of the present application has two multifilament yarns formed of the same material, and the both multifilament yarns have a ratio of the number of twists of the lower twist and the upper twist. A fishing line characterized by being twisted so that is 1.2 or more and 2.5 or less.

  A third invention of the present application provides the fishing line according to the first invention of the present application, wherein three multifilament yarns are twisted.

  A fourth invention of the present application provides a fishing line according to the first invention of the present application, wherein four multifilament yarns are twisted.

  The fifth invention of the present application is the fishing line according to any one of the first to fourth inventions, wherein each multifilament yarn to be twisted is mainly composed of polyarylate, ultrahigh molecular weight polyethylene or aramid. provide.

  In the sixth invention of the present application, in the second invention of the present application, both the multifilament yarns provide a fishing line mainly composed of polyarylate.

  In the seventh invention of the present application, in the invention of any one of the first to sixth applications, each multifilament yarn to be twisted has a lower twist number of 150 to 1000 times per meter and a tensile strength of 5 g / d. Provided is a fishing line having (gram / denier) or more and a tensile elongation of 20% or less, a knot strength of 2 g / d or more and a knot elongation of 10% or less.

  The eighth invention of the present application is the invention of the second or sixth application, wherein both the multifilament yarns have a number of twists of 250 to 550 times per meter, a tensile strength of 20 g / d or more, and a tensile elongation. A fishing line having a degree of 5% or less, a knot strength of 6 g / d or more, and a knot elongation of 2.5% or less is provided.

  In the ninth invention of the present application, a value obtained by dividing the numerical value twice the ratio of the number of twists of the lower twist and the upper twist by the number of multifilament yarns to be twisted is 1.2 or more and 2.5 or less. A method for producing a fishing line, characterized in that the multifilament yarn is twisted.

  In the tenth invention of the present application, two multifilament yarns formed of the same material are twisted so that the ratio of the number of twists of the lower twist and the upper twist is 1.2 or more and 2.5 or less. A method for manufacturing a fishing line is provided.

As each of the above-mentioned multifilament yarns, those produced by a conventionally known method (primarily twisted) are used.
Each material of the multifilament yarn is preferably 100% polyarylate. However, PE or polyaramid can be used instead of polyarylate, and aramid or polyester (PET / polyethylene terephthalate) can also be used. In addition, it is possible to employ ultra high molecular weight PE (ultra high molecular weight polyethylene). As the ultra high molecular weight PE, those having a molecular weight of 400,000 or more and 5 million or less are preferable, and those having a molecular weight of 1 million or more and 5 million or less are more preferable. It is most preferable to employ a super high molecular weight PE having a molecular weight of 1.5 million to 4.5 million.
Moreover, since the specific gravity of ultra high molecular weight PE is lighter than seawater (seawater specific gravity 1.023) (specific gravity 0.97), it is preferable to employ such a material as a fishing line for upper objects.
Para-aramid fiber can be adopted as the aramid. Polyarylate and aramid are particularly suitable for bottom fishing because their specific gravity is 1.41, which is greater than that of seawater.

Then, the two multifilament yarns are twisted (top twisted) by a conventionally known method. Here, the lower twist (in the direction) is the Z twist, and the upper twist (in the direction) is the S twist. However, the lower twist may be S twist and the upper twist may be Z twist. Any of the above may be used as long as the directions of the upper twist and the lower twist are reversed.
The number of lower twists is preferably 150 T / m (150 times per meter) to 1000 T / m, and more preferably 150 T / m to 930 T / m. Further, 150 T / m to 860 T / m is more preferable, 150 T / m to 600 T / m is further preferable, and 150 T / m to 550 T / m is still more preferable. Moreover, it is preferable to set it as 180 T / m or more, Especially it is preferable to set it as 250-550 T / m, and it is most preferable to set it as 250-500 T / m. If it is less than 150 T / m, it will be in the state close | similar to the alignment, and it is unpreferable, such as a single yarn breakage producing or flat shape. Moreover, when it exceeds 1000 T / m, the distortion | strain by twist will become large and will cause a strong fall and is not preferable. Strictly speaking, when polyarylate is used, this decrease in elasticity due to strain occurs to some extent when it exceeds 600 T / m, but when it exceeds 1000 T / m, the decrease in elasticity becomes significant and becomes a problem. Specifically, troubles of yarn breakage at the time of twisting process occur, resulting in problems of workability and deterioration of physical properties.
In particular, the tensile strength of 24 g / d or more can be secured by setting the number of lower twists to 650 T / m or less.
And the ratio of the number of twists of the lower twist and the upper twist shall be 1.2 or more and 2.5 or less (the number of the lower twists with respect to the number of first twists 1). Preferably, the ratio of the number of twists of the lower twist and the upper twist is 1.3 to 2.2. Most preferably, the ratio of the number of twists of the lower twist and the upper twist is 1.4 to 2.2.
When the ratio of the number of twists is less than 1.2, the lower twist becomes strong and retwisting occurs. On the contrary, when the ratio of the number of twists exceeds 2.5, the upper twist becomes strong, and the twist back occurs in the opposite direction. Therefore, the ratio of the number of twists of the lower twist and the upper twist is preferably as described above, particularly 1.3 or more, particularly 1.4 or more and 2.2 or less.

In the above description, the number of filament yarns to be twisted is two, but the same effect can be obtained by twisting three or more multifilament yarns. Specifically, 2 to 16 multifilament yarns can be twisted to form a fishing line according to the present invention. In particular, the number of multifilament yarns to be twisted is preferably 2 to 10. In particular, it is preferable to twist two to eight multifilament yarns.
Regarding the condition of the ratio of the number of twists of the lower twist and the upper twist when the two multifilaments are twisted, including the case of three or more (in the case of two-twisting and the case of twisting three or more In general), a value obtained by dividing a numerical value twice the ratio of the number of twists of the lower twist and the upper twist by the number of multifilament yarns to be twisted (hereinafter referred to as a converted value if necessary) is 1. .. Twist so that it becomes 2 or more and 2.5 or less. In the case of twisting two pieces, the doubled value is divided by the number of yarns 2 to be twisted (× 2 ÷ 2), so the ratio of the number of twists of the lower twist and the upper twist is used as a conversion value, and within the above range (As described for the case where the two multifilaments are twisted). On the other hand, for example, in the case of three, a numerical value obtained by dividing a value obtained by doubling the ratio of the number of twists of the lower twist and the upper twist by 3 falls within the above range of 1.2 to 2.5 as a converted value. It is necessary to be. Moreover, in the case of four, the numerical value which remove | divided by 4 the value which doubled the ratio of the number of twists of a lower twist and an upper twist is in the range of said 1.2-2.5 as a conversion value is required. The same applies to the case where five or more wires are twisted.

In the case of reinforcing the bonding between the filaments and coloring the fishing line, the filament surface after the twisting is coated (coated) with a resin. This coating with resin can be performed by dip coating (immersion) or by passing a thread between rollers coated with resin.
Fluorine resin, soft vinyl chloride, unsaturated polyester, and polyurethane can be used as the coating resin. Further, modified polypropylene, specifically, chlorinated polypropylene can also be employed as the coating resin. This coating resin can be colored by dispersing or dissolving a pigment or dye. Further, the resin coating after the coloring, that is, the coloring and the resin coating can be performed separately.
The resin coating is performed for the purpose of reinforcing the coloring and joining between filaments.
As for the coating resin, specifically, the fluorine-based resin includes a fluorine atom in the molecule, and may be polyvinylidene fluoride, polytetrafluoroethylene, polyvinyl fluoride, polychlorotrifluoroethylene, or Those obtained by dissolving these copolymers in a solvent such as N-methyl-2-pyrrolidone, soft vinyl chloride resins dissolved in organic solvents, and polyurethane resins similarly in organic solvents. Use the dissolved one. The concentration of the resin in the solution is in the range of 0.1 to 30% by weight. If it is 0.1% by weight or less, sufficient coloring and bonding reinforcing effects cannot be obtained, and if it is 30% by weight or more, the solution viscosity becomes high and the effect is in an equilibrium state. Even if it sees, it is not preferable. By setting it as the above-mentioned concentration range, the resin appropriately enters between the filaments, and the above-described effect can be obtained.

The polyarylate is completed after the above resin coating by passing the fishing line through a well-known dry hot air processor to heat-treat and fix the twist and dry it. In addition, after said drying, it is preferable to finish with a finishing agent as needed. After finishing, the fishing line is passed through a known take-up machine, and then wound up by a known take-up machine.
In the above resin coating, in the case of dip coating, a roller may be disposed on the liquid surface of the resin tank containing the coating resin, and the yarn may be hidden in the resin by the roller. Further, 5 to 40 parts by weight, preferably 10 to 30 parts by weight, and most preferably 25 parts by weight of resin are applied to 100 parts by weight of fishing line.
The treatment temperature at the treatment temperature by the dry hot air treatment machine is preferably set to a temperature not exceeding 100 degrees Celsius and not exceeding 20 degrees than the melting point of the resin used for coating.
Usually, the treatment temperature by the dry hot air treatment machine is preferably 100 to 250 degrees Celsius. In particular, the temperature is preferably set to 120 degrees Celsius to 180 degrees Celsius. When chlorinated polypropylene is employed as the coating resin, it is particularly preferably 100 to 150 degrees Celsius, more preferably 120 to 140 degrees Celsius, and even more preferably 120 to 130 degrees Celsius. In the case of using chlorinated polypropylene, if the heating temperature is set to 150 ° C. or more, it is not preferable because it cures.
When a dye or a pigment is contained in the coating resin, it is preferable that a light stabilizer is also contained. However, it is also possible to carry out without containing a light stabilizer. As the light stabilizer, a hindered amine light stabilizer, a benzotriazole ultraviolet absorber, or a benzophenone ultraviolet absorber can be employed.
The above finish is a surface treatment of a fishing line in which a fluorine-based, silicone-based, urethane-based aqueous polymer or mineral oil is applied to the surface of the fishing line. By performing such a surface treatment, it is possible to improve the slippage, gloss, and touch of the surface of the fishing line.

In the above description, a dry hot air processor is used. However, dry heat treatment can also be performed without using such hot air drying. This dry heat treatment (baking) is a process in which the resin is baked after dry adhesion at 150 ° C. to 250 ° C., preferably 150 ° C. to 200 ° C.
Such a baking treatment can also be employed in the case of using materials other than polyarylate, such as polyarylate, ultrahigh molecular PE, aramid, and polyester.
In the above, it is preferable that the multifilament yarns to be twisted are all made of the same material.

  However, for example, the filaments to be twisted are combined with those formed with aramid and those formed with polyarylate, or combined with those formed with polyester and those formed with polyarylate. It is also possible to combine a filament made of polyester and a filament made of ultra high molecular weight PE. For example, by combining a filament made of a material having a higher specific gravity than seawater and a filament made of a lighter material (at least one of the multifilament yarns to be twisted is mainly composed of a material having a higher specific gravity than seawater. At least one of the remaining multifilament yarns is made of a material having a specific gravity lighter than seawater as a main component), and the fishing line is allowed to float in the water without floating or sinking (a state where it does not settle rapidly). On the basis of such a state (after being acquired), a desired settling state and settling speed can be accurately obtained for the fishing line and the device by selecting the weight and the device. Particularly, a fishing line obtained by twisting the same number of filaments of polyarylate and filament of ultra high molecular weight PE has a specific gravity of 1.19 and is close to the specific gravity of seawater. Further, a fishing line in which the same number of polyester filaments and ultrahigh molecular PE filaments are twisted has a specific gravity of 1.18 and is close to the specific gravity of seawater, and is similarly suitable for obtaining the above floating state with respect to seawater.

Each invention of the present application has greatly reduced the difficulty of using the fishing line that employs the multifilament yarn (twisted yarn) to suppress the swirling of the yarn and entangle it with the guide of the fishing rod. That is, entanglement of the fishing line to the guide due to twisting back was suppressed.
In particular, a high strength is obtained by using a multifilament yarn mainly composed of polyarylate or ultrahigh molecular weight polyethylene, and the above-described effects can be obtained.

  Examples of the present invention will be described below. Table 1 shows six examples of Examples 1 to 6 and five comparative examples of Comparative Examples 1 to 5.

In the examples and comparative examples shown in Table 1, the number of yarns to be twisted is two.
The yarns to be twisted are 500 deniers (total deniers) in all examples and comparative examples, and polyarylate (Vectran HT220T 40 / Vectlan / registered trademark / Kuraray Co., Ltd./1-1 Otemachi, Chiyoda-ku, Tokyo) -3) 100% multifilament was adopted. And the lower twist (direction) was S twist, and the upper twist (direction) was Z twist.
About Examples 1-5, PP (chlorinated polypropylene) primer was employ | adopted for resin to coat, the coating method was set to dip coating, and it coat | covered with 25 weight part resin with respect to 100 weight part of fishing lines. The heat treatment temperature is 120 degrees Celsius. For Example 6, an aqueous polyurethane resin (DIC (Dainippon Ink Chemical Co., Ltd. / 3-35-58 Sakashita, Itabashi-ku, Tokyo), trade name Hydran HW-333) was used as the coating resin, and fishing line 100 was used. It was coated with 12 parts by weight of resin with respect to parts by weight.
The measuring method of tensile strength, tensile elongation, knot strength and knot elongation is based on JIS L 1013-1981.
For unwinding, handle the fishing line hanging under its own weight with your fingers (pick the line with your index finger and thumb and slide your finger straight down against the fishing line) to release the finger and then rotate the fishing line. This was confirmed by visual inspection. As a result, the fishing line turned over a number of times exceeding one revolution was marked as x, and the fishing line not exceeding one revolution (within 360 degrees) was marked as ◯.

As shown in Table 1 above, the ratio of the number of upper and lower twists (converted value) is 0.6 (Comparative Example 1), 0.7 (Comparative Example 2), and 1.0 (Comparative Example 3) each once (360 degrees). ) Rotation (twisting back) exceeding. Also, in Comparative Example 4 in which the ratio of the number of upper and lower twists is 2.7, and Comparative Example 5 that is one 500 denier multifilament that does not perform twisting, in the opposite direction to Comparative Examples 1 to 3, Twisting has occurred.
On the other hand, the ratio of the number of upper and lower twists was 1.4 in Example 1 (lower twist number 270 T / m, upper twist number 200 T / m), and similarly 1.4 Example 2 (lower twist number 355 T / m, upper twist number) Twisting number 260 T / m), similarly 1.4 Example 3 (lower twisting number 280 T / m, upper twisting number 200 T / m), 2 Example 4 (lower twisting number 280 T / m, upper twisting number 140 T / m) m), 2.2 Example 5 (primary twist number 540 T / m, upper twist number 250 T / m), 1.4 Example 6 (primary twist number 408 T / m, upper twist number 300 T / m) In either case, the rotation due to twisting was within one rotation.

In addition, the tensile strength in Example 1 was 14.02 kg (tensile strength 28.0 g / d), Example 2 was 13.29 kg (tensile strength 26.6 g / d), and Example 3 was 13.88 kg (tensile strength). 27.8 g / d), 13.90 Kg (tensile strength 27.8 g / d) in Example 4, 12.57 Kg (tensile strength 25.1 g / d) in Example 5, and 13.80 Kg (in Example 6) Tensile strength 27.6 g / d) and tensile elongation were 4.12% in Example 1, 3.73% in Example 2, 3.86% in Example 3, and 3.85% in Example 4. In Example 5, it was 3.66%, in Example 6 it was 4.02%. Further, the elongation of the nodule was 1.66% in Example 1, 1.62% in Example 2, and 1 in Example 3. .65%, Example 4 1.52%, Example 5 1.89%, Example However, the nodule strength was 3.92 kg (nodule strength 7.8 g / d) in Example 1 and 3.75 kg (nodule strength 7) in Example 2. 0.5 g / d), 3.89 Kg (nodule strength 7.8 g / d) in Example 3, 3.85 Kg (nodule strength 7.7 g / d) in Example 4, and 3.82 Kg (nodule strength) in Example 5. 7.6 g / d), and in Example 6, it was 3.95 Kg (nodule strength 7.9 g / d), both of which exceeded 3.7 Kg.
Regarding the above tensile strength, all of the above examples exceed 25 g / d. This tensile strength corresponds to the breaking strength described in Patent Document 1 (Japanese Patent Laid-Open No. 11-103737). In Examples 1 to 5 shown in this Patent Document 1, any breaking strength (tensile strength) does not exceed 24 g / d. For the invention of Patent Document 1, the breaking strength of the present invention is It can be seen that there is a marked improvement.

Next, other examples and comparative examples will be described. Table 2 shows 18 examples of Examples 7-24, and Table 3 shows 36 comparative examples of Comparative Examples 6-41.
Table 4 shows 12 types of Examples 25-36 and 3 types of Comparative Examples 42-44.

In each of the examples and comparative examples shown in Tables 2 and 3, 200 denier yarns were adopted for each multifilament yarn constituting one fishing line. In the examples and comparative examples shown in Tables 2 and 3, all the multifilament yarns constituting one fishing line are made of the same material.
In the examples and comparative examples shown in Tables 2 and 3, all the multifilament yarns constituting one fishing line are set to 200 deniers. However, in the examples shown in Table 4, other than 200 deniers are also available. (Examples 25-28, Example 30 and Example 31).

Each of the Examples and Comparative Examples shown in Tables 2 to 4 was colored by dip coating, then dried with hot air at 120 ° C., and resin-coated by dip coating. PP resin (polypropylene primer / trade name / Takashi Kubo Paint Co., Ltd./3-15-27 Nishi-Awaji, Higashiyodogawa-ku, Osaka City) was used as the resin for coating. The PP primer was adjusted to a solid content (resin component) of 10% by weight (adjustment was performed by mixing a product of 5% resin and a product of 10% resin. The total is 100% by weight.) And used for dip coating of the fishing line.
After this resin coating, dry heat treatment at 180 ° C., that is, baking (baking of the coated resin) was performed. And I finished with oil (oiling). After the oiling, the fishing line was dried at 120 ° C. to wind up the fishing line.
In addition, after said coloring process, marking is performed as needed (depending on the use of a product). The marking is to mark the fishing line at every predetermined length (when it is desired to accurately grasp the depth of the tana, it can be known by reading the mark on the fishing line). In this example, the marking was performed.
The test contents (test methods) for each item in Tables 2 to 4 are the same as those shown in Table 1 above. Moreover, although not shown in Table 2-Table 4, it is the same as that shown in Table 1 also about the direction (S, Z) of the above-mentioned lower twist and the upper twist (lower twist S, upper twist Z).
In Table 1, the ratio of the upper and lower twist numbers (twist ratio) becomes the converted value as it is, but in Tables 2 to 4, items of converted values are provided separately.

In Examples 7 to 12 (Table 2) and Comparative Examples 6 to 17 (Table 3), polyarylate was adopted as the multifilament yarn constituting the fishing line. Specifically, Vectran HT220T 40 (hereinafter simply referred to as Vectran as necessary) was employed. Example 7, Comparative Example 6 and Comparative Example 7 are two examples, Example 8, Comparative Example 8 and Comparative Example 9 are three examples, Example 9, Comparative Example 10 and Comparative Example 11 are four examples No. 10, Comparative Example 12 and Comparative Example 13 are five, Example 11 and Comparative Example 14 and Comparative Example 15 are six, Example 12, Comparative Example 16 and Comparative Example 17 are eight polyarylate (Vectran). ) Of multifilament yarns. About Examples 7-12 and Comparative Examples 6-17, all have a specific gravity of 1.41.
In Examples 13 to 18 (Table 2) and Comparative Examples 18 to 29 (Table 3), a multifilament yarn constituting a fishing line is converted to an ultra-polymer PE, specifically Dyneema (registered trademark / formally Dyneema SK60 / Toyobo Co., Ltd./2-8-8 Dojimahama, Kita-ku, Osaka-shi) 200d / 192f (f indicates filament (number). That is, 200 denier / 192 materials in the dyneema) was employed. Example 13 and Comparative Example 18 and Comparative Example 19 are two examples, Example 14 and Comparative Example 20 and Comparative Example 21 are three examples, Example 15 and Comparative Example 22 and Comparative Example 23 are four examples 16 and Comparative Example 24 and Comparative Example 25 are 5, Example 17 and Comparative Example 26 and Comparative Example 27 are 6, and Example 18 and Comparative Example 28 and Comparative Example 29 are 8 of the above Dyneema SK60. Multifilament yarn is drawn and twisted. As for Examples 13 to 18 and Comparative Examples 18 to 29, the specific gravity is 0.97.
In Examples 19 to 24 (Table 2) and Comparative Examples 30 to 41 (Table 3), a multifilament yarn constituting the fishing line is aramid, specifically Technora HFY T-240 (Technola / registered trademark / Teijin Techno Products). 220d / 65f of 1-6-7 Minamihonmachi, Chuo-ku, Osaka City, was employed. Example 19 and Comparative Example 30 and Comparative Example 31 are two examples, Example 20 and Comparative Example 32 and Comparative Example 33 are three examples, Example 21, Comparative Example 34 and Comparative Example 35 are four examples 22 and Comparative Example 36 and Comparative Example 37 are 5; Example 23 and Comparative Example 38 and Comparative Example 39 are 6; Example 24, Comparative Example 40 and Comparative Example 41 are 8; The filament yarn is drawn and twisted. As for Examples 19 to 24 and Comparative Examples 30 to 41, the specific gravity is 1.41.

As shown in Table 2, Example 7 in which two filaments of polyarylate (Vectran) were twisted and the above converted value (twist ratio) was 1.67, and the converted value was 1. Example 8 with 51, Example 9 with 4 twists and the above converted value of 1.70, Example 10 with 5 twists and a converted value of 1.70, 6 twists In Example 11 in which the converted value is 1.78 and Example 12 in which the converted value is 1.70 by twisting 8 pieces, the number of rotations due to twisting is within one rotation. It was.
On the other hand, as shown in Table 3, a comparative example 6 in which two filaments of polyarylate (Vectran) are twisted and the above converted value is 1.15 and a comparative example in which the converted value is 2.56 7, Comparative Example 8 in which three wires are twisted to obtain a converted value of 1.01, Comparative Example 9 in which a converted value is 2.81, and Comparative Example in which four wires are twisted to obtain the above converted value of 0.84 10 and a comparative example 11 in which the converted value is 2.58, a comparative example 12 in which 5 is twisted and the converted value is 1.06, a comparative example 13 in which the converted value is 2.67, and 6 twisted Comparative Example 14 in which the above conversion value is 1.10 and Comparative Example 15 in which the conversion value is 2.57, and Comparative Example 16 in which the conversion value is 1.10 by twisting 8 pieces and the conversion value are 2.55. In all of Comparative Examples 17 to be described, the number of rotations due to twist back exceeded one rotation.

As shown in Table 2, Example 13 in which two filament yarns of Dyneema SK60 (200d / 192f) were twisted and the above converted value (twist ratio) was 1.67, and three were twisted and the converted value was 1 .51, Example 14, four twisted to obtain the converted value of 1.70, Example 15, five twisted to obtain the converted value of 1.70, and six twisted Thus, in Example 17 in which the converted value is 1.78, and Example 18 in which the converted value is 1.70 by twisting eight, the number of rotations due to twisting is within one rotation. there were.
In contrast, as shown in Table 3, two filament yarns of Dyneema SK60 (200d / 192f) were twisted and Comparative Example 18 in which the above converted value was 1.15 and the converted value was 2.73. Comparative Example 19, Comparative Example 20 in which three wires are twisted to obtain a converted value of 1.11, Comparative Example 21 in which a converted value is 2.61, and twisted four wires to have the above converted value of 1.14 Comparative Example 22 and Comparative Example 23 with a converted value of 2.58, Comparative Example 24 with 5 twists and a converted value of 1.06, Comparative Example 25 with a converted value of 2.67, and 6 Twisted Thus, Comparative Example 26 in which the above conversion value is 1.10, Comparative Example 27 in which the conversion value is 2.57, and Comparative Example 28 in which the conversion value is 1.10 by twisting 8 pieces and the conversion value are 2 In Comparative Example 29, which is .55, the number of rotations due to twisting back exceeded 1 rotation.

As shown in Table 2, Example 19 in which two filaments of Technora were twisted to obtain the above converted value (twist ratio) of 1.67, and three in which the converted value was 1.70. Example 20, Example 21 in which four wires are twisted to obtain the above-mentioned converted value of 1.70, Example 22 in which five wires are twisted to obtain a converted value of 1.70, and the above-mentioned conversion by twisting six wires In Example 23 in which the value was 1.78 and Example 24 in which eight were twisted and the converted value was 1.70, the number of rotations due to twisting back was within one rotation.
On the other hand, as shown in Table 3, Comparative Example 30 in which two filaments of Technora were twisted to obtain the above converted value of 1.10, Comparative Example 31 in which the converted value was 2.73, and 3 Comparative example 32 in which the converted value is 1.11 by twisting and Comparative example 33 in which the converted value is 2.61, and Comparative example 34 and converted value in which the above converted value is 1.14 by twisting four Comparative Example 35 in which 2.58 is twisted, Comparative Example 36 in which the converted value is 1.06 by twisting 5 pieces, Comparative Example 37 in which the converted value is 2.67, and the above converted value by twisting 6 pieces Comparative Example 38 in which the conversion value is 2.57, Comparative Example 39 in which the conversion value is 2.57, and Comparative Example 40 in which the conversion value is 1.10 by twisting 8 pieces and the Comparative Example in which the conversion value is 2.55 In all, 41, the number of rotations due to twist back exceeded 1 rotation.

In Comparative Examples 42 to 44 shown in Table 4, as described above, 200 deniers are adopted for each of the filaments constituting one fishing line, and the two filaments are brought together. However, unlike the examples and comparative examples described above, the filaments (monofilaments) that have not been twisted are twisted together (for the convenience of layout, the number of twists is described in the item of twisting). But not the number of twists). Specifically, in Comparative Example 42, two polyarylate (Vectran) monofilaments each having 200 denier were twisted. In Comparative Example 43, a monofilament made of two Dyneema SK60 (200d / 192f) each having 200 denier is twisted. Furthermore, the comparative example 44 twists two technolas each having 200 denier.
As shown in Table 4, in the case of twisting these untwisted filaments (Comparative Examples 42 to 44), the number of rotations due to twisting was more than one rotation.

  Examples 25-28 shown in Table 4 are made by twisting 150 denier polyarylate (Vectran) multifilament yarns. Specifically, in Example 25, two 150-denier polyarylate (Vectran) multifilaments were twisted in two (number of lower twists: 619 T / m, number of upper twists: 370 T / m). The value (twist ratio) is 1.67. In Example 26, three multifilaments of polyarylate (Vectran) each having 150 denier were twisted (primary twist number 408 T / m, upper twist number 182 T / m), and the converted value was 1.49. And In Example 27, four multi-filaments of polyarylate (Vectran) each having 150 denier were twisted (number of lower twists: 619 T / m, number of upper twists: 182 T / m), and the converted value was 1.70. And In Example 28, four multi-filaments of polyarylate (Vectran) each having 150 denier were twisted (primary twist number 855 T / m, upper twist number 242 T / m), and the converted value was 1.77. And

In Example 29 shown in Table 4, all of 200 denier polyarylate (Vectran) multifilament yarns were twisted (primary twist number 921 T / m, upper twist number 424 T / m) and converted. The value is 1.45.
In Example 30 shown in Table 4, all multifilament yarns of 250 denier polyarylate (Vectran) were twisted together (number of lower twists 619 T / m, number of upper twists 182 T / m), converted values Is 1.70.
Example 31 shown in Table 4 is one in which three multifilament yarns of 100 denier polyester (BHT110T24 / Teijin) are twisted together (number of lower twists 619 T / m, number of upper twists 273 T / m). 1.51.

In Example 32 shown in Table 4, a total of two multifilament yarns of 200 denier polyarylate (Vectran) and one multifilament yarn of 200 denier superpolymer PE (Dyneema SK60) were twisted together. (The number of lower twists is 619 T / m, the number of upper twists is 370 T / m), and the converted value is 1.67 (specific gravity is 1.19).
In Example 33 shown in Table 4, a total of four multifilament yarns of 200 denier polyarylate (Vectran) and two multifilament yarns of 200 denier superpolymer PE (Dyneema SK60) were twisted together. (The number of lower twists is 619 T / m, the number of upper twists is 182 T / m), and the converted value is 1.70 (specific gravity is 1.19).
In Example 34 shown in Table 4, two 200-denier aramid (technola) multifilament yarns and two 200-denier polyarylate (Vectran) multifilament yarns were twisted together for a total of four ( The lower twist number is 694 T / m, the upper twist number is 210 T / m), and the converted value is 1.65 (the specific gravity is 1.41).
In Example 35 shown in Table 4, two 200-denier polyester (BHT110T24) multifilament yarns and two 200-denier polyarylate (Vectran) multifilament yarns were twisted together for a total of four ( The lower twist number is 694 T / m, the upper twist number is 210 T / m), and the converted value is 1.65 (specific gravity is 1.40). Specifically, two filaments of 100 denier polyester (BHT110T24) are twisted to form one filament of 200 denier, two filaments of 200 denier polyester (BHT110T24) thus formed, and 200 denier polyarylate. A total of 4 filaments of 2 (Vectran) were brought together (for polyester, 4 filaments of 100 denier were prepared as described above to form 2 filaments of 200 denier. Used two 200 deniers from the beginning). However, the same effect can be expected when two polyesters having 200 denier are prepared from the beginning.
Example 36 shown in Table 4 was obtained by twisting together a total of 4 multifilament yarns of 200 denier polyester (BHT110T24) and 2 multifilament yarns of 200 denier ultra high molecular weight PE (Dyneema SK60). (The number of lower twists is 694 T / m, the number of upper twists is 210 T / m), and the converted value is 1.65 (the specific gravity is 1.18). Also in Example 36, as in Example 35, two filaments of 100 denier polyester (BHT110T24) were twisted to form one filament of 200 denier, and the 200 denier polyester (BHT110T24) formed in this way was used. A total of 4 filaments, 2 filaments and 2 filaments of 200 denier ultra high polymer (Dyneema SK60) were brought together (for polyester, 4 filaments of 100 denier were prepared as described above, and 200 denier filaments were prepared. Two Dyneema SK60s were used from the beginning with 200 deniers). However, in this case, the same effect can be expected even if two polyesters having 200 denier are prepared from the beginning.
As shown in Table 4, in each of Examples 25 to 36, the rotation by twisting back was within one rotation.

Consider the above test results.
In Examples 7-36, it turns out that the fishing line using the multifilament yarn with few twisting-backs is obtained, and it turns out that the fear of getting involved with a guide is remarkably reduced compared with Comparative Examples 6-44.
For example, when fishing lines composed of 200 denier polyarylate (Vectran) filament yarns are compared, Comparative Example 42 (Table 4) in which two polyarylate (Vectran) filaments that have not been twisted at all are twisted together. ), The rotation by twisting more than 1 rotation occurs, whereas the two filaments of 200 denier polyarylate (Vectran) are twisted and twisted, and the converted value is 1.67. In Example 7 (Table 2), the rotation due to twisting is within one rotation as described above, and using the same 200 denier polyarylate (Vectran) filament yarn, Thus, it can be seen that Example 7 is superior to Comparative Example 42.

  Similarly, when comparing fishing lines composed of filament yarn of 200 denier ultra high molecular PE (Dyneema SK60), two super high molecular PE (Dyneema SK60) filaments that are not twisted at all are twisted together. In Comparative Example 43 (Table 4), rotation by twisting over 1 rotation occurred, whereas two multifilament yarns of 200-denier ultra high molecular weight PE (Dyneema SK60) were twisted and twisted. In Example 13 (Table 2) in which the conversion value is 1.67, rotation by twisting is within one rotation, and two filament yarns of the same 200 denier ultra high molecular PE (Dyneema SK60) are used. However, it can be seen that Example 13 is superior to Comparative Example 43 in terms of difficulty in entanglement with the guide.

  Similarly, when comparing fishing lines composed of 200 denier aramid (technola) filament yarns, Comparative Example 44 (twisted two aramid (technola) filaments that had not been twisted at all) In 4), rotation by twisting more than one rotation occurs, whereas two multi-filament yarns of 200 denier aramid (technola) are subjected to lower twisting and upper twisting, and the converted value is 1.67. In Example 19 (Table 2), the rotation due to twisting is within one rotation, and using the same two 200 denier aramid (technola) filament yarns, it is a comparative example in terms of difficulty in entanglement with the guide. It can be seen that Example 19 is superior to 44.

On the other hand, although the lower twist and the upper twist are both performed, the conversion value is not within the above range of 1.2 to 2.5, for example, a 200 denier polyarylate (Vectran) filament yarn 2 The comparative example 6 (Table 3) which performs the lower twist and the upper twist about the book and sets the converted value to 1.15 and the comparative example 7 (Table 3) sets the converted value to 2.56 are also caused by twisting back. As described above, the rotation exceeds 1 rotation. In contrast, while using the same two 200 denier polyarylate (Vectran) filament yarns, the rotation due to twisting is within 1 rotation. It can be seen that Example 7 (Table 2) of .67 is superior to Comparative Example 6 and Comparative Example 7 in terms of difficulty in entanglement with the guide.
Similarly, from the above results, Comparative Example 18 (Table 3) in which two filament yarns of 200-denier ultra high molecular weight PE (Dyneema SK60) were subjected to a lower twist and an upper twist and the converted value was 1.15. Compared to Comparative Example 19 (Table 3) with a converted value of 2.73, Example 13 (Table 2) with a converted value of 1.67 is superior in terms of difficulty in entanglement with the guide. I understand that.
In the same manner, Comparative Example 30 (Table 3) in which two twisted filaments of 200 denier aramid (technola) were twisted and twisted and the converted value was 1.10 and the converted value was 2.73. It turns out that the comparative example 31 (Table 3) to which Example 19 (Table 2) which makes the conversion value 1.67 is more excellent in the point of the difficulty of entanglement with a guide.

As described above, a fishing line formed by twisting three, four, five, six, and eight filaments of 200 denier polyarylate (Vectran), ultra-high molecular PE (Dyneema SK60), and aramid (Technola) For each of the examples, the examples that fall within the range of the conversion value of 1.2 to 2.5 are based on twisting back compared with the comparative example that is outside the above range of the conversion value (less than 1.2 or more than 2.5). It is obvious that the rotation speed is suppressed and the guide is excellent in terms of difficulty in entanglement.
That is, when comparing the examples shown in Table 2 and the comparative examples shown in Table 3, all of the Examples shown in Table 2 are suppressed in one turn, whereas Table 3 shows that Any of the comparative examples shown is one that exceeds the twist back by one revolution, and as a result, the example in which the converted value falls within the range of 1.2 to 2.5 falls below or exceeds the range of the converted value. It can be confirmed that the twist back is small compared to the comparative example, and the fishing line of the comparative example is less likely to be entangled with the fishing rod guide.

Next, the test results of Examples 25 to 36 shown in Table 4 will be examined.
From the results of Examples 25 to 28 described above, even when the multifilament yarn constituting the fishing line is polyarylate (Vectran) and 150 denier, and the number of filaments to be twisted is 2, 3, or 4, twisting occurs. It can be confirmed that it is an excellent fishing line that is difficult to entangle with the fishing line guide.
Further, the multifilament yarn constituting the fishing line is polyarylate (Vectran), 200 denier, the number of twisted filaments is 3, the number of lower twists is 921 T / m, and the number of upper twists is 424 T / m (upper and lower) Regarding Example 29, the number of twists is greatly different from that of the polyarylate shown in Table 2), it can be confirmed that the twist back is suppressed and the guide is not easily entangled.
It can also be confirmed that Example 30 in which four 250 denier polyarylate (Vectran) multifilament yarns are twisted is excellent in that untwisting is suppressed and the guide is hardly entangled.
Also in Example 31 in which three multifilament yarns of 100 denier polyester (BHT110T24) were twisted, it was confirmed that the untwisting was suppressed and the guide was not easily entangled.

As described above, Examples 32 to 36 employ different types of materials for the multifilaments constituting the fishing line, and all of them have obtained excellent results regarding suppression of twist back.
Specifically, also in Example 32 in which one multifilament yarn of 200 denier polyarylate (Vectran) and one multifilament yarn of 200 denier ultra high molecular weight PE (Dyneema SK60) were twisted together, Example 32 Also, all of Example 33 in which a total of four multifilament yarns of 200 denier polyarylate (Vectran) and two multifilament yarns of 200 denier ultra high molecular weight PE (Dyneema SK60) were twisted together It can be confirmed that the twist back is suppressed and the guide is not easily entangled.
In addition, Example 34 in which two multifilament yarns of 200 denier aramid (Technola) and two multifilament yarns of 200 denier polyarylate (Vectran) were twisted together, Example 34, polyester of 200 denier (BHT110T24) Example 35, in which a total of four multifilament yarns of two multifilament yarns and two 200 denier polyarylate (Vectran) were twisted together, two multifilament yarns of 200 denier polyester (BHT110T24) and super denier of 200 denier For each of Example 36 in which a total of four multifilament yarns of polymer PE (Dyneema SK60) were twisted together, it was confirmed that all were excellent in that untwisting was suppressed and the guide was not easily entangled. .

  Further, in Example 32 and Example 33 described above, by twisting together a polyarylate (Vectran) filament having a specific gravity of 1.41 and a filament of ultra high molecular weight PE (Dyneema SK60) having a specific gravity of 0.97, With a specific gravity of 1.19, a floating state (a state in which it did not settle rapidly) that did not float or sink in seawater was obtained. Also in Example 36 in which a filament of polyester (BHT110T24) and a filament of ultra high molecular weight PE (Dyneema SK60) were twisted, the specific gravity was 1.18, and the above effect was obtained.

Furthermore, it examines from a viewpoint of tensile strength.
In Example 7, the lower twist number was 619 T / m (the upper twist number was 370 T / m), the tensile strength was 10.96 Kg, the tensile strength was 27.40 g / d, the tensile elongation was 7.63%, and the knot strength was 3. 09 kg, nodule strength 7.7 g / d, nodule elongation 2.15%.
In Example 8, the lower twist number was 619 T / m (the upper twist number was 273 T / m), the tensile strength was 15.72 kg, the tensile strength was 26.20 g / d, the tensile elongation was 4.56%, and the knot strength was 4. 65 kg, nodule strength 7.8 g / d, nodule elongation 1.98%.
In Example 9, the lower twist number was 619 T / m (the upper twist number was 182 T / m), the tensile strength was 20.74 kg, the tensile strength was 25.93 g / d, the tensile elongation was 4.74%, and the knot strength was 6. 58 kg, nodule strength 8.2 g / d, nodule elongation 1.87%.
In Example 10, the number of lower twists was 694 T / m (the number of upper twists was 163 T / m), the tensile strength was 23.32 Kg, the tensile strength was 23.32 g / d, the tensile elongation was 4.35%, and the knot strength was 6. 00 Kg, nodule strength 6.0 g / d, and nodule elongation 1.62%.
In Example 11, the lower twist number was 694 T / m (the upper twist number was 130 T / m), the tensile strength was 25.95 kg, the tensile strength was 21.63 g / d, the tensile elongation was 5.72%, and the knot strength was 7. 86 Kg, nodule strength 6.6 g / d, nodular elongation 3.22%.
In Example 12, the lower twist number was 694 T / m (the upper twist number was 102 T / m), the tensile strength was 34.21 kg, the tensile strength was 21.38 g / d, the tensile elongation was 5.83%, and the knot strength was 9. 85 kg, nodule strength 6.2 g / d, and nodular elongation 3.03%.
From the above, when a polyarylate (Vectran) filament is adopted, the tensile strength is 25 g / d or more for those having a lower twist number of 650 T / m or less, that is, a lower twist number of 619 T / m. I understand.

In Example 13, the lower twist number was 619 T / m (the upper twist number was 370 T / m), the tensile strength was 12.26 Kg, the tensile strength was 30.65 g / d, the tensile elongation was 5.85%, and the knot strength was 4. 92 Kg, nodule strength 12.3 g / d, nodule elongation 2.60%.
In Example 14, the lower twist number was 619 T / m (the upper twist number was 273 T / m), the tensile strength was 17.93 kg, the tensile strength was 29.88 g / d, the tensile elongation was 5.92%, and the knot strength was 7. 50 kg, nodule strength 12.5 g / d, nodule elongation 2.35%.
In Example 15, the lower twist number was 619 T / m (the upper twist number was 182 T / m), the tensile strength was 24.08 kg, the tensile strength was 30.10 g / d, the tensile elongation was 5.88%, and the knot strength was 9. 20 kg, nodule strength 11.5 g / d, and nodule elongation 2.72%.
In Example 16, the lower twist number was 694 T / m (the upper twist number was 163 T / m), the tensile strength was 27.50 Kg, the tensile strength was 27.50 g / d, the tensile elongation was 6.76%, and the knot strength was 11. 03 kg, nodule strength 11.0 g / d, and nodule elongation 2.46%.
In Example 17, the lower twist number was 694 T / m (the upper twist number was 130 T / m), the tensile strength was 28.80 kg, the tensile strength was 24.00 g / d, the tensile elongation was 10.22%, and the knot strength. 14.50 kg, nodule strength 12.1 g / d, nodule elongation 5.72%.
In Example 18, the lower twist number was 694 T / m (the upper twist number was 102 T / m), the tensile strength was 37.30 Kg, the tensile strength was 23.31 g / d, the tensile elongation was 9.22%, and the knot strength was 19. 85 kg, nodule strength 12.4 g / d, nodular elongation 6.22%.
From the above, when the filament of ultra high molecular weight PE (Dyneema SK60) is adopted, the tensile strength is 29 g / d for those having a lower twist number of 650 T / m or less, that is, a lower twist number of 619 T / m. You can see that there are more.

In Example 19, the lower twist number was 619 T / m (the upper twist number was 370 T / m), the tensile strength was 10.53 Kg, the tensile strength was 26.33 g / d, the tensile elongation was 5.69%, and the knot strength was 2. 40 kg, nodule strength 6.0 g / d, and nodule elongation 1.80%.
In Example 20, the number of lower twists was 619 T / m (the number of upper twists was 243 T / m), the tensile strength was 16.01 kg, the tensile strength was 26.68 g / d, the tensile elongation was 4.54%, and the knot strength was 3. 71 kg, nodule strength 6.2 g / d, and nodular elongation 1.53%.
In Example 21, the lower twist number was 619 T / m (the upper twist number was 182 T / m), the tensile strength was 21.00 kg, the tensile strength was 26.25 g / d, the tensile elongation was 4.77%, and the knot strength was 4. 61 kg, nodule strength 5.8 g / d, nodule elongation 1.43%.
In Example 22, the number of lower twists was 694 T / m (the number of upper twists was 163 T / m), the tensile strength was 25.01 kg, the tensile strength was 25.01 g / d, the tensile elongation was 4.30%, and the knot strength was 6. 01 kg, nodule strength 6.0 g / d, and nodule elongation 1.54%.
In Example 23, the number of lower twists was 694 T / m (the number of upper twists was 130 T / m), the tensile strength was 27.00 Kg, the tensile strength was 22.50 g / d, the tensile elongation was 5.10%, and the knot strength was 7. 40 kg, nodule strength 6.2 g / d, and nodule elongation 2.00%.
In Example 24, the number of lower twists was 694 T / m (the number of upper twists was 102 T / m), the tensile strength was 35.40 Kg, the tensile strength was 22.13 g / d, the tensile elongation was 5.48%, and the knot strength was 9. 87 kg, nodule strength 6.2 g / d, and nodular elongation 2.46%.
From the above, when an aramid (technola) filament is used, the tensile strength may be 26 g / d or more for those having a lower twist number of 650 T / m or less, that is, a lower twist number of 619 T / m. I understand.

  From the above, with respect to the examples in which polyarylate (Vectran), ultra-high molecular PE (Dyneema SK60) or aramid (Technola) is used for the 200 denier filament, the fishing line having a lower twist number of 650 T / m or less is lower. It can be seen that a larger tensile strength is obtained as compared with the prior art (Patent Document 1) than a fishing line having a twist number greater than 650 T / m.

In Example 25, the lower twist number was 619 T / m (the upper twist number was 370 T / m), the tensile strength was 7.89 Kg, the tensile strength was 26.30 g / d, the tensile elongation was 4.19%, and the knot strength was 2. 01 kg, nodule strength 6.7 g / d, and nodule elongation 1.71%.
In Example 26, the number of lower twists was 408 T / m (the number of upper twists was 182 T / m), the tensile strength was 11.70 kg, the tensile strength was 26.00 g / d, the tensile elongation was 4.03%, and the knot strength was 2. 69 kg, nodule strength 6.0 g / d, and nodule elongation 1.49%.
In Example 27, the number of lower twists was 619 T / m (the number of upper twists was 182 T / m), the tensile strength was 16.61 Kg, the tensile strength was 27.69 g / d, the tensile elongation was 4.69%, and the knot strength was 5. 17 kg, nodule strength 8.6 g / d, nodule elongation 1.82%.
In Example 28, the lower twist number was 855 T / m (the upper twist number was 242 T / m), the tensile strength was 14.92 Kg, the tensile strength was 24.87 g / d, the tensile elongation was 4.22%, and the knot strength was 3. 75 kg, nodule strength 6.2 g / d, and nodule elongation 2.37%.
For this reason, it is different from the above-mentioned 200 denier in that a filament of 150 denier polyarylate (Vectran) is used. In this case as well, Examples 25 to 27 having a lower twist number of 650 T / m or less Shows that a tensile strength of 26 g / d or more is secured.

In Example 29, the number of lower twists was 921 T / m (the number of upper twists was 424 T / m), the tensile strength was 13.32 Kg, the tensile strength was 22.20 g / d, the tensile elongation was 4.42%, and the knot strength was 3. 65 kg, nodule strength 6.1 g / d, and nodule elongation 1.77%.
In Example 30, the lower twist number was 619 T / m (the upper twist number was 182 T / m), the tensile strength was 25.30 Kg, the tensile strength was 25.30 g / d, the tensile elongation was 4.90%, and the knot strength was 7. 32 kg, nodule strength 7.3 g / d, nodule elongation 1.67%.
In Example 31, the lower twist number was 619 T / m (the upper twist number was 273 T / m), the tensile strength was 2.39 Kg, the tensile strength was 7.97 g / d, the tensile elongation was 17.60%, and the knot strength was 1. 12 kg, nodule strength 3.7 g / d, and nodular elongation 9.01%.
In Example 29 above, a 200-denier polyarylate (Vectran) multifilament was used, but the number of twists was 921 T / m. Therefore, the tensile strength was 22.2. It remains at 20 g / d.
On the other hand, in Example 30 above, a 250 denier polyarylate (Vectran) multifilament was used, and as described above, the lower twist number was 650 T / m or less, so that the tensile strength was 25.30 g / d. The strength is ensured, showing the superiority to the above prior art.
In Example 31, since a multifilament of 100 denier polyester (BHT110T24) is used, the number of lower twists is 619 T / m, but the tensile strength is only 7.97 g / d.

  In view of the above, in the examples in which polyarylate (Vectran), ultra-high molecular weight PE (Dyneema SK60) or aramid (Technola) is used for the filament, the fishing line having a lower twist number of 650 T / m or less is lower. It can be seen that a larger tensile strength is obtained with respect to the prior art (Patent Document 1) than a fishing line having a diameter greater than 650 T / m. Moreover, even if the number of lower twists is 650 T / m or less, in polyester, it turns out that tensile strength is inferior compared with another said Example. That is, it is more advantageous to adopt polyarylate (Vectran), ultra high molecular PE (Dyneema SK60) or aramid (Technola) as the filament.

In Example 32, the number of lower twists was 619 T / m (the number of upper twists was 370 T / m), the tensile strength was 12.68 Kg, the tensile strength was 31.70 g / d, the tensile elongation was 5.29%, and the knot strength was 4. 00 kg, nodule strength 10.0 g / d, and nodule elongation 2.16%. In Example 32, as described above, one multifilament of 200 denier polyarylate (Vectran) and one multifilament of 200 denier ultra-high molecular weight PE (Dyneema SK60) were brought close to each other. The number is 650 T / m or less.
In Example 33, the number of lower twists was 619 T / m (the number of upper twists was 182 T / m), the tensile strength was 24.52 kg, the tensile strength was 30.65 g / d, the tensile elongation was 5.54%, and the knot strength was 8. 21 kg, nodule strength 10.3 g / d, nodule elongation 2.22%. In this Example 33, as described above, two multifilaments of 200 denier polyarylate (Vectran) and two multifilaments of 200 denier ultra-high molecular weight PE (Dyneema SK60) were brought close to each other. The number is 650 T / m or less.
In Example 34, the number of lower twists was 694 T / m (the number of upper twists was 210 T / m), the tensile strength was 20.59 Kg, the tensile strength was 25.74 g / d, the tensile elongation was 4.12%, and the knot strength was 4. 53 kg, nodule strength 5.7 g / d, nodule elongation 1.43%. In Example 34, two 200-denier aramid (Technola) multifilaments and two 200-denier polyarylate (Vectran) multifilaments were brought together as described above.
In Example 35, the number of lower twists was 694 T / m (the number of upper twists was 210 T / m), the tensile strength was 11.94 kg, the tensile strength was 14.93 g / d, the tensile elongation was 5.52%, and the knot strength was 4. 24 Kg, nodule strength 5.3 g / d, and nodule elongation 2.92%. In Example 35, as described above, two multifilaments of 200 denier polyester (BHT110T24) and two multifilaments of 200 denier polyarylate (Vectran) were brought together.
In Example 36, the lower twist number was 694 T / m (the upper twist number was 210 T / m), the tensile strength was 11.13 Kg, the tensile strength was 13.91 g / d, the tensile elongation was 8.23%, and the knot strength was 5. 63 kg, nodule strength 7.0 g / d, nodule elongation 4.81%. In Example 36, as described above, two multifilaments of 200 denier polyester (BHT110T24) and two multifilaments of 200 denier ultra-high molecular weight PE (Dyneema SK60) were brought together.

As described above, Example 32 and Example 33 having a lower twist number of 650 T / m or less have a tensile strength of 31.70 g / d and 30.65 g / d, respectively, that is, the tensile strength is 30 g / d. The above results are extremely excellent.
From the above, even if two different types of filaments selected from polyarylate (Vectran), ultra high molecular PE (Dyneema SK60), aramid (Technola), and polyester (BHT110T24) are selected and twisted, the number of lower twists is 650T. / M or less, it can be confirmed that excellent tensile strength can be obtained.

Claims (10)

Having a plurality of multifilament yarns,
The above-mentioned multifilament yarn is adjusted so that a value obtained by dividing a numerical value twice the number of twists of the lower twist and the upper twist by the number of multifilament yarns to be twisted is 1.2 or more and 2.5 or less. A fishing line characterized by being twisted. Having two multifilament yarns made of the same material,
A fishing line characterized in that both multifilament yarns are twisted so that the ratio of the number of twists between the lower twist and the upper twist is 1.2 or more and 2.5 or less.   The fishing line according to claim 1, wherein three multifilament yarns are twisted.   The fishing line according to claim 1, wherein four multifilament yarns are twisted.   The fishing line according to any one of claims 1 to 4, wherein each multifilament yarn to be twisted is mainly composed of polyarylate, ultrahigh molecular weight polyethylene, or aramid.   The fishing line according to claim 2, wherein both the multifilament yarns are mainly composed of polyarylate.   Each multifilament yarn to be twisted has a lower twist number of 150 to 1000 times per meter, a tensile strength of 5 g / d or more and a tensile elongation of 20% or less, a knot strength of 2 g / d or more, and a knot elongation of 10%. The fishing line according to any one of claims 1 to 6, wherein:   Both of the above multifilament yarns have a number of twists of 250 to 550 times per meter, a tensile strength of 20 g / d or more and a tensile elongation of 5% or less, a knot strength of 6 g / d or more, and a knot elongation of 2.5. % Fishing line according to claim 2 or 6.   A plurality of multifilament yarns are adjusted so that the value obtained by dividing the twist ratio of the lower twist and the upper twist by the number of multifilament yarns to be twisted is 1.2 or more and 2.5 or less. A method for producing a fishing line, characterized by twisting.   Production of a fishing line characterized in that two multifilament yarns formed of the same material are twisted so that the ratio of the number of twists between the lower twist and the upper twist is 1.2 or more and 2.5 or less. Method.