JP2007282580A - Luminous fishline - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminous fishline emitting light by light, exhibiting extremely long afterglow luminous characteristics after removing the light, and having excellent water resistance and characteristics of low specific gravity, high strength and low elongation. <P>SOLUTION: The luminous fishline comprises a conjugate fiber obtained by covering the surface of a core component comprising a pseudo monofilament obtained by twisting and/or braiding a plurality of filaments having 17-30 cN/dtex breaking strength and 440-550 cN/dtex initial modulus with a coating component comprising a coating material containing a luminous fluorescent substance obtained by doping a rare earth oxide as an activator to an alkaline earth metal oxide, and regulated so that the area proportions of the core component and the coating component may be 50-95% and 5-50% respectively, and the specific gravity may be within the range of 1.0-1.3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention emits light by an external stimulus such as light and has afterglow luminance characteristics for an extremely long time even after light is removed, and has excellent water resistance, low specific gravity, high strength, and low elongation characteristics. It relates to phosphorescent fishing line.

  In recent years, fishing gears have evolved remarkably. In particular, in the field of fishing lines, development of fishing lines that are most suitable for each fishing application has been actively conducted.

  For example, as a fishing line for night fishing, a phosphorescent fishing line that contains a phosphorescent phosphor, stores light by an external stimulus such as light, and continues to emit light in the dark after removing the light has been proposed. Since this phosphorescent phosphor loses its phosphorescent performance by reacting with water, it lacks durability as a fishing line, and thus this point has been desired to be improved.

  As a technique for suppressing the reaction of the phosphorescent phosphor with water, the component constituting at least a part of the inner layer of the composite fiber is a thermoplastic polymer containing a phosphorescent fluorescent pigment, and water absorption of the thermoplastic polymer constituting the outermost layer is performed. A luminous composite fiber having a rate of 0.5% by weight or less (see, for example, Patent Document 1), and a resin composition comprising a thermoplastic synthetic resin having a specific water absorption rate and a phosphorescent phosphor at least in part Luminescent monofilaments (for example, refer to Patent Document 2) as constituent components have been proposed.

  However, although these conventional phosphorescent fishing lines can solve the problem of water resistance, in order to ensure sufficient visibility as a fishing line for night fishing, it is necessary to add a large amount of phosphorescent phosphor. It included a defect that reduced power was invited. The fishing line is made of monofilament such as polyamide resin, fluororesin, polyphenylene sulfide resin, polyester resin, etc., so the fishing line has a large stretch, so it is often used for fishing when fishing for night squid. There was a problem that could not be expected.

  In other words, in night fishing, especially sea squid fishing, the use of egi (simulated bait in the form of shrimp) makes the movement of this egi large and creates a vertical movement that makes the prawn jump on the egi. Therefore, it is required to increase the appeal power to the prey, but when the elongation of the fishing line is large, the elongation of the line interferes and the movement of the egi becomes small, resulting in a decrease in the appeal power. The fishing results were falling.

In addition, as a high-strength, low-elongation phosphorescent fishing line, the core component is an organic synthetic fiber having a specific gravity, tensile strength, and tensile modulus, and the coating component contains a phosphorescent agent having a specific average particle diameter. A phosphorescent fiber (see, for example, Patent Document 3) composed of a composite fiber made of a thermoplastic synthetic resin is proposed, but when this flounder fishing is performed using this phosphorescent fishing line and an action is added to egi Because the specific gravity of the fishing line is too heavy, throwing the egi and sinking the egi to the depth (shelf) where the squid is located, the fishing line sinks, resulting in the movement of the prawn that resembles the shrimp There was a problem that the vertical movement like a bouncing could not be produced, and the fishing result fell due to a decrease in appeal power.
JP 2001-123328 A JP 2001-89928 A Japanese Patent Laying-Open No. 2005-200774

  The present invention has been achieved as a result of studies aimed at solving the above-mentioned problems.

  Therefore, the object of the present invention is to emit light by an external stimulus such as light and to have afterglow luminance characteristics for a very long time even after the light is removed, and also has excellent water resistance, low specific gravity, high strength, low elongation. The object is to provide a phosphorescent fishing line having a degree characteristic.

  In order to achieve the above object, according to the present invention, the surface of a core component made of a synthetic fiber is made of a composite fiber coated with a coating component made of a coating material containing a phosphorescent component, and in a cross section perpendicular to the fiber axis. The core component has an area ratio of 50 to 95%, the coating component has an area ratio of 5 to 50%, and a specific gravity of 1 to 1.3, and the core component has a breaking strength of 17 to 30 cN / dtex. A pseudo monofilament formed by twisting and / or stringing a plurality of filaments having an initial elastic modulus of 440 to 550 cN / dtex, and the phosphorescent component contained in the coating component is an activator for alkaline earth metal oxide A phosphorescent fishing line characterized by being a phosphorescent phosphor doped with a rare earth oxide is provided.

In the phosphorescent fishing line of the present invention,
The persistence of the afterglow luminance after being left in water at 20 ° C. for 24 hours is in the range of 40 to 100%, and the phosphorescent phosphor particle surface is coated with phosphate.
The breaking strength is in the range of 10 to 28 cN / dtex,
The breaking elongation is in the range of 2 to 10%, and that it is a fishing line for squid squid, any of which is mentioned as a preferable condition. By satisfying these conditions, a further excellent effect can be obtained. it can.

  According to the present invention, the strength and the water resistance are excellent, and even when repeatedly used as a fishing line having a low specific gravity, a high strength, and a low elongation, the strength and the afterglow luminance characteristics are hardly lowered and sufficient durability is obtained. A phosphorescent fishing line can be obtained. Therefore, the phosphorescent fishing line of the present invention can be preferably used as a phosphorescent fishing line for sea squid, especially in night fishing, and the vertical movement of the shrimp is also large, as the movement of the prawns can be seen. Since it comes to produce and leads to the improvement of the sea squid, it can be said that its practicality is extremely high.

  The present invention will be specifically described below.

  The phosphorescent fishing line of the present invention is composed of a composite fiber in which the surface of a core component made of synthetic fiber is coated with a coating component made of a coating material containing a phosphorescent component, and the area ratio of the core component in the cross section perpendicular to the fiber axis is 50 to 95%, coating component area ratio is 5 to 50%, specific gravity is in the range of 1.0 to 1.3, core component is breaking strength 17 to 30 cN / dtex, initial elastic modulus 440 to 550 cN / dtex Is a pseudo monofilament in which a plurality of filaments are twisted and / or made into a string, and the phosphorescent component contained in the coating component is doped with a rare earth oxide as an activator in an alkaline earth metal oxide It is characterized by being a phosphor.

  It is important that the filament contained in the synthetic fiber constituting the core component has a tensile strength of 17 to 30 cN / dtex, particularly 19 to 25 cN / dtex. If the tensile strength is less than 17 cN / dtex, the filament is obtained by coating. This is not preferable because the strength of the fishing line is reduced. On the other hand, filaments with a tensile strength greater than 30 cN / dtex are difficult to obtain with current technology.

  It is important that the filament contained in the synthetic fiber constituting the core component has an initial elastic modulus of 440 to 550 cN / dtex, particularly 470 to 520 cN / dtex. If the initial elastic modulus is less than 440 cN / dtex, This is not preferable because the movement of the fishing line becomes worse or the hit becomes difficult to understand, resulting in a low-sensitivity fishing line. On the other hand, when the initial elastic modulus is greater than 550 cN / dtex, the sensitivity is high, but when the fishing rod is moved up and down to attach an action to the egi, the load on the tip of the rod, the angler's wrist and arm is large. Therefore, it is not preferable.

  Examples of the filaments that satisfy the above-described characteristics constituting the core component of the present invention include high-density polyethylene fibers [Dyneema (registered trademark) manufactured by Toyobo Co., Ltd., Techmylon (registered trademark) manufactured by Mitsui Petrochemical Co., Ltd.], wholly aromatic Para-aramid fibers obtained by dry and wet spinning of aromatic polyamides [Kevlar (registered trademark) manufactured by Toray DuPont Co., Ltd., Twaron (registered trademark) manufactured by Teijin Twaron Co., Ltd.], Technora (registered trademark) manufactured by Teijin Limited ], Wholly aromatic polyester fiber obtained by melt liquid crystal spinning of wholly aromatic polyester [Vectran (registered trademark) manufactured by Kuraray Co., Ltd.], PBO fiber obtained by liquid crystal spinning of polyparaphenylene benzobisoxazole [Toyobo Co., Ltd.] Zylon (registered trademark)], PAN-based carbon fiber [Toray Industries, Inc. Torayca (registered trademark), Toho Tenax Co., Ltd. Ito (TM)], although such a pitch-based carbon fiber [Mitsubishi Kasei Co. DIALEAD (TM)] and the like, but is not limited thereto as long as it satisfies the above characteristics.

  It is important that the core component in the present invention is a pseudo monofilament formed by twisting and / or stringing a plurality of filaments satisfying the above-described characteristics. Since the variation occurs, it is difficult not only to uniformly apply the coating component, but also it becomes impossible to obtain characteristics of high strength and low elongation.

  Further, the number of filaments, the degree of twisting, the density in the case of forming a string, and the like can be arbitrarily set according to the thickness of the intended fishing line, the use, and the like.

  On the other hand, the coating component in the phosphorescent fishing line of the present invention bears phosphorescent performance and hardly bears mechanical properties such as strength, tensile elastic modulus, and elongation. That is, the mechanical properties of the phosphorescent fishing line of the present invention depend on the ratio of the core component to the entire fishing line. Therefore, in the phosphorescent fishing line of the present invention, it is important that the area ratio (core component ratio) of the core component in the cross section perpendicular to the fiber axis is 50 to 95%, particularly 80 to 90%. A core component ratio of less than 50% is not preferable because the mechanical properties of the fishing line are insufficient. On the other hand, if the core component ratio exceeds 95%, the amount of the coating component responsible for the light storage performance is insufficient and the light emission characteristics are deteriorated.

  The specific gravity of the fishing line of the present invention is important to be in the range of 1.0 to 1.3, particularly 1.0 to 1.2. If the specific gravity is less than 1, the fishing line is floated and is easily affected by the wind. Even if you throw an egi at the target point, it will be pulled by the thread and the point will shift, which is not preferable. If the specific gravity is too high, 1.3 or more, the road thread will sink together with the egi and add action to the egi It is not preferable because the vertical movement that the shrimp bounces can not be produced and the fishing result is lowered as a result of the decrease in appeal power.

  The luminous component contained in the coating material used in the present invention is a phosphorescent phosphor obtained by doping a rare earth oxide as an activator into an alkaline earth metal oxide.

  Various alkaline earth metal oxides can be selected, but it is preferable that the metal contains one or more of Ca (calcium), Sr (strontium) and Ba (barium). .

  Various rare earth oxides can be selected, but lanthanoid series, that is, La (lanthanum), Ce (cerium), Pr (praseodymium), Nd (neodymium), Pm (promethium), Sm (samarium), Eu (Europium), Gd (gadolinium), Tb (terbium), Dy (dysprosium), Ho (holmium), Er (erbium), Tm (thulium), Yb (ytterbium), or Lu (lutetium) be able to.

Specific examples of the phosphorescent phosphor has the formula _{M 1-X Al 2 O 4} -X ( where, M in the formula is at least one metal element selected calcium, strontium and barium, X is In the alkaline earth oxide obtained by pulverizing and classifying crystals of the compound represented by the formula (-0.33 to 0.60), Eu (europium) and / or Dy (dysprosium) is represented by M in the formula Examples include, but are not limited to, those in which 0.001% or more and 10% or less are added to the metal element represented by the raw yarn ratio.

  This phosphorescent phosphor is preferably one in which the particle surface is coated with a phosphate which is a poorly soluble salt, and thereby exhibits further excellent water resistance.

  Examples of the phosphate used here include diammonium hydrogen phosphate, ammonium dihydrogen phosphate, sodium dihydrogen phosphate dihydrate, sodium ammonium hydrogen phosphate tetrahydrate, sodium hexametaphosphate, and the like. In addition to these salts, potassium salts and the like can also be used.

  Methods for coating phosphorescent phosphors with phosphoric acid include a method of mixing phosphorescent phosphors in a dry manner, a method of mixing in a phosphoric acid aqueous solution in a slurry state, and a method of dehydrating after stirring in a phosphoric acid solution However, depending on the alkaline earth metal oxide and rare earth oxide to be used, the type and amount of the phosphate to be mixed and the heating conditions can be appropriately selected.

  The core component and the coating component constituting the phosphorescent fishing line of the present invention may contain additives such as pigments, dyes, weathering agents, ultraviolet absorbers, antioxidants, crystallization inhibitors and plasticizers as necessary. In the range which does not inhibit the effect of this invention, it can contain.

  Moreover, as a method of coating the coating material on the pseudo monofilament which is the core component, a general melt coating method in which a phosphorescent agent is blended with a thermoplastic resin and a molten coating material is coated, a photocurable resin is phosphorescent. A coating material containing a fluorescent agent is coated by dipping and then cured by applying ultraviolet light, and a coating material containing a phosphorescent agent in a resin adhesive is coated by dipping and then heated. It is possible to select the bond coating method to be solidified.

  In addition, about the thermoplastic resin used here, a photocurable resin, resin-made adhesives, etc., arbitrary raw materials can be selected and used according to the thickness of a fishing line, or an application.

  In the phosphorescent fishing line of the present invention, the afterglow luminance retention rate after being left in water at 20 ° C. for 24 hours is preferably in the range of 40 to 100%, particularly 60 to 100%.

  The afterglow luminance retention rate in the present invention refers to a 36 W (40 type) light bulb for a sample in which a phosphorescent fishing line is left in water at 20 ° C. for 24 hours and then left in a dark place for more than 24 hours to erase afterglow. The measurement point was irradiated for 5 minutes at an illuminance of 1400 lux, and the numerical value obtained by measuring the afterglow luminance with a luminance meter after 3 minutes from the stop of irradiation was measured by the same method before leaving in water. It is a value calculated by dividing by the numerical value of afterglow luminance after 3 minutes of the phosphorescent fishing line and multiplying by 100%.

  It can be said that the higher the afterglow luminance retention rate, the more the phosphorescent fishing line is excellent in water resistance, with less deterioration in afterglow luminance characteristics due to moisture absorption by the phosphorescent phosphor.

  In other words, if the afterglow luminance retention rate is less than 40%, the afterglow luminance characteristics deteriorate after several uses when actually used as a fishing line, and it is not preferable as a phosphorescent fishing line for night fishing. Become.

  Furthermore, in the phosphorescent fishing line of the present invention, the breaking strength is in the range of 10 to 28 cN / dtex, particularly 15 to 25 cN / dtex, and the breaking elongation is in the range of 2 to 10%, particularly 4 to 8%. It is desirable.

  That is, if the breaking strength and breaking elongation are within the above ranges, the operability and fishing results of eggi are further improved.

  The diameter of the phosphorescent fishing line of the present invention is not particularly limited, but is preferably in the range of 0.1 mm to 0.4 mm. In other words, if the diameter is less than 0.1 mm, the strength is insufficient, and conversely if the diameter exceeds 0.40 mm, it becomes stiff, and parallax is likely to occur when it is wound on a reel. This is because a phosphorescent fishing line with low operability such as being difficult to pass through the phosphorescent when using the phosphorescent device provided is provided.

  Further, the amount of the phosphorescent phosphor contained in the coating agent is not particularly limited, but is preferably in the range of 5 to 50% by weight. That is, if the content is less than 5% by weight, the light emission performance of the fishing line tends to be inferior, and if the content is 50% by weight or more, the adhesiveness to the core yarn tends to be inferior.

  The cross-sectional shape of the phosphorescent fishing line of the present invention can take various shapes in order to satisfy its use and characteristics. That is, the shape of the cross section perpendicular to the fiber axis direction can be set to any shape such as a circle, an ellipse, a flat shape, a regular polygon, and a polygon including an irregular shape. Here, flat means an ellipse or a rectangle, but includes an exact ellipse defined mathematically, an ellipse, a rectangle or a similar shape other than a rectangle, and a regular polygon is a mathematical shape. In addition to the regular polygon defined in (1), a shape substantially similar to this is included. Moreover, the shape which provides an unevenness | corrugation in fiber shape and reduces the contact with a guide is also contained.

  When the phosphorescent fishing line of the present invention produced as described above is used as a fishing line for night fishing, it exhibits excellent characteristics such as sufficient strength as a phosphorescent fishing line, low elongation, and low specific gravity, In particular, when it passes through a phosphorescent device installed on a bag, guide, reel or the like, it has excellent luminous properties and a decrease in afterglow luminance characteristics becomes extremely small even if it is used repeatedly.

  Here, the phosphorescent fishing line application of the present invention covers all fishing lines such as road line, lure fishing line, fly fishing line, etc. When it is used as a luminous path yarn that emits light by passing through a phosphorescent device installed on a guide or a reel, it is very suitable because it easily emits light.

  Furthermore, among the fishing lines that are wound on reels, especially when used as a fishing line thread for the sea squid, it excels in water resistance and exhibits the characteristics of phosphorescent fishing lines with low specific gravity, high strength, and low elongation. The fishing results can be further increased.

  Hereinafter, the present invention will be described based on examples. The phosphorescent fishing line in the examples was evaluated according to the following method.

[diameter]
A laser outer diameter measuring machine “KL-151A” manufactured by Anritsu Corporation was used. The average diameter was calculated by measuring 300 m of fiber by running the measuring section at a speed of 30 m / min.

[Break strength, initial elastic modulus]
In accordance with JIS-L1013, the sample was allowed to stand in a temperature / humidity adjustment room at 20 ° C. and 65% RH for 24 hours, and then a “Tensilon” UTM-4-100 type tensile tester manufactured by Orientec Co., Ltd. was used. The strength-elongation curve of the filament was determined under the conditions of a test length of 250 mm and a tensile speed of 300 mm / min, and the strength was calculated.

[Strength at break, elongation at break]
In accordance with JIS-L1013, the sample was allowed to stand in a temperature / humidity adjustment room at 20 ° C. and 65% RH for 24 hours, and then a “Tensilon” UTM-4-100 type tensile tester manufactured by Orientec Co., Ltd. was used. The strength and elongation at break of the filament were measured under the conditions of a test length of 250 mm and a tensile speed of 300 mm / min.

[specific gravity]
A specific gravity measuring machine (“SGM300P” manufactured by Shimadzu Corporation) was used, and an average value of 5 times of execution was adopted.

[Afterglow brightness retention rate of phosphorescent fishing line]
The phosphorescent fishing line to be measured is left in water at 20 ° C. for 24 hours and then air-dried to remove moisture, and the phosphorescent fishing line is uniformly wound around a white plate having a thickness of 10 to 15 mm not containing a fluorescent agent. Further, wrap it uniformly in the same direction. This winding is repeated alternately so that the thickness of the overlapping portion is 0.5 mm or more. At this time, a sample is prepared so that the area of the portion where the wound phosphorescent fishing line overlaps is 10 mm × 10 mm or more, and the luminance of the overlapping portion is used as a measurement point. Next, in a dark box that blocks outside light installed in a dark room at 20 ° C., a sample that had been left in the dark for at least 24 hours to erase afterglow was put in, and a 36 W (40 type) light bulb (manufactured by National) LW100V36WL / 1P) is used to irradiate the measurement point at an illuminance of 1400 lux for 5 minutes, and the afterglow luminance after 3 minutes from the stop of irradiation is measured with a luminance meter (LS-100, manufactured by Konica Minolta Sensing). The obtained numerical value is divided by the value of the afterglow luminance after 3 minutes of the phosphorescent fishing line measured by the same method before being left in the water, and the value obtained by multiplying by 100% is used as the afterglow. It was set as the luminance retention rate (unit:%). It shows that phosphorescence fishing line is excellent in water resistance, so that a persistence luminance retention rate is high.

[Performance evaluation of phosphorescent fishing line]
A. Fishing results A squid squid Egi fishing was carried out by night fishing for a total of 10 hours while the phosphorescent fishing line was wound on a reel as a road line, and the fishing line was light-emitted by a phosphorator attached to a rod, and the results were evaluated in the following three stages. .
○ ・ ・ ・ Egg's action can be operated as expected without imposing a burden on the wrist or arm, and when the squid was applied, there was no thread breakage and it was able to be taken in without problems.
△ ・ ・ ・ It was possible to hang without putting a burden on the wrist and arm, and it was possible to capture without breaking the thread when the squid was applied, but the action of Egi was a little worse and the ratio of squid was reduced. The
× ... The action of Egi could not be operated as expected, and the fishing results dropped, or the squid that had been hung was missed by thread breakage, and even the important Egi was lost.

B. Visibility in night fishing A phosphorescent fishing line is wound around a reel as a fishing line for a sea squid, and the fishing line is lighted by a phosphor attached to a rod to actually perform night fishing, and the results were evaluated in the following two stages. .
○ ... The thread streak could be clearly seen with the naked eye, and the function as a phosphorescent fishing line was fully demonstrated.
X: It was difficult to visually recognize the string with the naked eye, or it was initially visible, but the brightness as a phosphorescent fishing line decreased with time.

[Example 1]
High-density polyethylene fibers (Dyneema made by Toyobo Co., Ltd.) with a breaking strength of 26.0 cN / dtex and an initial elastic modulus of 500 cN / dtex are drawn together to give a twist of 124 t / m (S twist) with a ring twisting machine. After that, four of these lower twisted yarns were combined and given a 65 t / m upper twist (Z twist) to obtain a core yarn having a diameter of 0.115 mm.

  The above core yarn is dipped with a coating material in which Niko Luminova GLL300FFS (with phosphate coating) 20% by weight is bonded to a bond super clear made by Konishi Co., Ltd., and shaped through a die having a diameter of 0.13 mm. After arranging, it was dried in a warm air drying oven at a temperature of 155 ° C. to obtain a phosphorescent fishing line.

  The evaluation results of the obtained phosphorescent fishing line are shown in Table 1.

[Example 2]
A phosphorescent fishing line was obtained in the same manner as in Example 1 except that N nocturnal luminova GLL300FFS (without phosphate coating) manufactured by Nemoto Special Chemical Co., Ltd. was used as the phosphorescent phosphor.

  The evaluation results of the obtained phosphorescent fishing line are shown in Table 1.

[Example 3]
Using a high-density polyethylene fiber (Dyneama made by Toyobo Co., Ltd.) with a breaking strength of 26.0 cN / dtex and an initial elastic modulus of 500 cN / dtex, four braided yarns with a blade angle of 19 degrees and a braid of 0.115 mm in diameter A phosphorescent fishing line was obtained in the same manner as in Example 1 except that it was used for the line.

  The evaluation results of the obtained phosphorescent fishing line are shown in Table 1.

[Example 4]
High-density polyethylene fibers (Dyneema made by Toyobo Co., Ltd.) with a breaking strength of 26.0 cN / dtex and an initial elastic modulus of 500 cN / dtex are drawn together to give a twist of 124 t / m (S twist) with a ring twisting machine. After that, three of these lower twisted yarns were combined and given an upper twist (Z twist) of 65 t / m to obtain a core yarn having a diameter of 0.170 mm.

  A resin composition containing 20% by weight of N Yakko Luminova GLL300FFS (with phosphate coating) manufactured by Nemoto Special Chemical Co., Ltd. in a low density polyethylene manufactured by Ube Industries, Ltd. and a resin temperature of 180 using an extruder type extruder. The phosphorescent fishing line was obtained by heat-extruding to a temperature of ° C. and melt coating at the crosshead portion.

  The evaluation results of the obtained phosphorescent fishing line are shown in Table 1.

[Example 5]
A core yarn having a diameter of 0.210 mm was obtained by stringing 6 high-density polyethylene fibers (Dyneema made by Toyobo Co., Ltd.) having a breaking strength of 26.0 cN / dtex and an initial elastic modulus of 500 cN / dtex at a blade angle of 19 degrees. .

  The core yarn is dipped with a coating material in which 20% by weight of N luminosity Luminova GLL300FFS (with phosphate coating) manufactured by Nemoto Special Chemical Co., Ltd. is dispersed in a photo-curing resin Desolite Z7002 manufactured by JSR, and shaped through a die having a diameter of 0.260 mm. After arranging the above, the surface of the yarn was irradiated with ultraviolet rays to obtain a phosphorescent fishing line.

  The evaluation results of the obtained phosphorescent fishing line are shown in Table 1.

[Comparative Example 1]
A core yarn having a diameter of 0.080 mm was obtained by using four original yarns of nylon fiber (manufactured by Toray Industries Inc.) having a breaking strength of 11.0 cN / dtex and an initial elastic modulus of 40 cN / dtex, at a blade angle of 19 degrees.

  The above core yarn is dipped with a coating material in which Niko Luminova GLL300FFS (with phosphate coating) of Nemoto Special Chemical Co., Ltd. is dispersed in a bond super clear made by Konishi Co., Ltd. and is formed through a die having a diameter of 0.130 mm. After arranging, it was dried in a warm air drying oven at a temperature of 155 ° C. to obtain a phosphorescent fishing line.

  The evaluation results of the obtained phosphorescent fishing line are shown in Table 1.

[Comparative Example 2]
Six high-density polyethylene fibers (Dyneema made by Toyobo Co., Ltd.) with a breaking strength of 26.0 cN / dtex and an initial elastic modulus of 500 cN / dtex were drawn, and the same was directly applied to Bond Super Clear made by Konishi Co., Ltd. N Yakko Luminova GLL300FFS Although a coating material in which 20% by weight (with phosphate coating) was dispersed was dipped and an attempt was made to create a phosphorescent fishing line, the fibers of Dyneema were scattered, and the phosphorescent fishing line could not be obtained.

[Comparative Example 3]
A phosphorescent fishing line was obtained in the same manner as in Example 1 except that the cross-sectional area ratio of the core component and the coating component was changed to core = 98%: sheath = 2%.

  The evaluation results of the obtained phosphorescent fishing line are shown in Table 1.

[Comparative Example 4]
A phosphorescent fishing line was obtained in the same manner as in Example 1 except that the cross-sectional area ratio of the core component and the coating component was changed to core = 30%: sheath = 70%.

  The evaluation results of the obtained phosphorescent fishing line are shown in Table 1.

  As is clear from Table 1, the phosphorescent fishing line (Examples 1 to 5) of the present invention emits light by an external stimulus such as light, and has an afterglow luminance characteristic for a very long time even after the light is removed. In addition, it is a phosphorescent fishing line that has excellent water resistance, low specific gravity, high strength, and low elongation, and is particularly suitable as a fishing line for flying squid in night fishing.

  On the other hand, the fishing line (Comparative Example 1) having a low breaking strength and low initial elastic modulus of the core yarn is low in fishing line strength. It was lacking in practicality from the point of view.

  The fishing line (comparative example 2) in which the core yarn is not twisted or processed with a string is not able to be processed into a phosphorescent fishing line because the core yarn is broken at the stage of coating the core yarn.

  The fishing line with a high core component ratio (Comparative Example 3) has no problem in terms of strength of the fishing line, but the specific gravity of the finished fishing line becomes too low and the fishing line floats when actually used as a fishing line. It is too susceptible to wind, and even if you throw an egi at the target point, it is pulled by the thread and the point is shifted, the fishing results will drop extremely, and the coating component will be less, so it is visible at night fishing It lacked the properties and was inferior in practicality.

  In addition, a fishing line having a core component ratio that is too low (Comparative Example 4) has no problem in terms of visibility. However, the amount of the coating component is too high, and the specific gravity of the fishing line becomes too high. When the action is applied to the egi, the vertical movement that the shrimp bounces cannot be produced, and as a result not only the fishing results fall, but the fishing line strength becomes extremely low and the fishing line breaks. Therefore, it was lacking in practicality.

  As described above, the fishing line of the present invention has high strength and water resistance, and has low specific gravity, high strength, and low elongation characteristics. The drop is small and it has sufficient durability, so it can be used effectively as a phosphorescent fishing line for sea squid, especially for night fishing. It is possible to produce a large vertical movement that bounces, and it is very practical because it leads to the improvement of the catch of the squid.

Claims (6)

It is composed of a composite fiber in which the surface of the core component made of synthetic fiber is coated with a coating component made of a coating material containing a phosphorescent component, and the area ratio of the core component in the cross section perpendicular to the fiber axis is 50 to 95%, The area ratio of the coating component is in the range of 5 to 50% and the specific gravity is in the range of 1.0 to 1.3, and the core component has a breaking strength of 17 to 30 cN / dtex and an initial elastic modulus of 440 to 550 cN / dtex. A pseudo monofilament formed by twisting and / or stringing a plurality of filaments, and the phosphorescent component contained in the coating component is a phosphorescent property obtained by doping an alkaline earth metal oxide with a rare earth oxide as an activator A phosphorescent fishing line characterized by being a phosphor. 2. The phosphorescent fishing line according to claim 1, wherein an afterglow luminance retention ratio after being left in water at 20 ° C. for 24 hours is in a range of 40 to 100%. The phosphorescent fishing line according to claim 1 or 2, wherein a phosphate is coated on the particle surface of the phosphorescent phosphor. The luminous fishing line according to any one of claims 1 to 3, wherein the breaking strength is in a range of 10 to 28 cN / dtex. Breaking elongation is in the range of 2 to 10%, phosphorescent fishing line according to any one of claims 1 to 4. The phosphorescent fishing line according to any one of claims 1 to 5, wherein the fishing line is a sea bream fishing line.