JPH08112052A - Fishing line and method of manufacturing the same - Google Patents

Abstract

(57) [Abstract] [Purpose] A fishing line formed of a filament made of synthetic resin, which has at least its surface cross-linked, so that it has a good tensile strength, a high knot strength, a low water resistance, etc. (EN) Provided is a fishing line having excellent wear resistance and excellent durability. [Structure] As an example, a polyamide (intrinsic viscosity: 3.4) having a copolymerization ratio of nylon 6 and nylon 66 of 85:15 (weight ratio) is melt-spun and stretched by a conventional method, and a silicone emulsion is used in the final step. Was applied to complete the fishing line. Next, this fishing line was applied with an electron beam irradiation device (manufactured by Nisshin High Voltage Co., Ltd.) at a pressure voltage of 300 KV,
An electron beam with an electron beam dose of 5 Mrad was irradiated. The proportion of the insoluble component in formic acid was 28% by weight, cross-linking was confirmed, and the abrasion resistance was improved by about 1.5 times and the durability of abrasion resistance was improved by about 2 times.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing line made of a synthetic resin and a method for producing the same, and more particularly to a fishing line which is not easily scratched on the surface and has excellent durability, and a method for producing the same.

[0002]

2. Description of the Related Art A fishing line used for fishing has different required characteristics depending on a target fish and a fishing method, and fishing lines are selected according to respective purposes and used in combination.

Conventionally well-used fishing lines include polyamide resins such as nylon 6 and nylon 6,6, fluororesins such as polyvinylidene fluoride, polyester resins such as polyethylene terephthalate, and recently ultrahigh molecular weight polyethylene. Those composed of filaments of polyolefin resin such as the above are widely used.

Monofilaments made of these synthetic resins are easy to handle because they are excellent in transparency and flexibility. However, wear resistance, tensile strength, knot strength,
Filaments made of synthetic resin satisfying all of the water resistance have not been obtained, and the abrasion resistance is not particularly satisfactory.

In response to these requests, for example, Japanese Patent Laid-Open No. 2-10
A number of proposals have been made in Japanese Patent No. 7104, such as treatment with an amino-modified silicone, and in Japanese Utility Model Laid-Open No. 63-31300, a method of coating with an amorphous metal. Further, JP-A-3-50794 proposes adding a polyacetal resin and silicone oil to a polyamide polymer.

[0006]

However, even with the above amino-modified silicone and amorphous metal coating, the adhesion and bondability with the fishing line body are not sufficient, and some of the amino-modified silicone and the amorphous metal coating fall off due to repeated repeated use, resulting in a long-lasting effect. The situation is not always enough.

Further, the method of kneading into the polymer is
The effect is excellent in sustainability, but if the addition amount is increased to obtain a remarkable durability effect, other physical properties, particularly tensile strength, knot strength and the like tend to be deteriorated.

In order to solve the above-mentioned conventional problems, the present invention provides a fishing line which is resistant to so-called root misalignment, which is scratched by friction with rocks on the bottom of the water, and which is excellent in durability and has good durability. The purpose is to provide. Another object is to provide a fishing line with excellent durability, which has several stages of excellent abrasion resistance without deteriorating tensile strength, knot strength, water resistance and the like.

[0009]

To achieve the above object, the fishing line of the present invention is a fishing line formed of a filament made of a synthetic resin, characterized in that at least its surface is cross-linked. .

In the above structure, it is preferable that the crosslinked structure is formed by radiation irradiation treatment. Moreover, in the said structure, it is preferable that a radiation irradiation process is an electron beam irradiation process.

In the above structure, it is preferable that the synthetic resin is at least one thermoplastic resin selected from polyamide resin, fluorine-containing resin, polyester resin, and ultrahigh molecular weight polyolefin resin.

Further, in the above structure, the filament is preferably a monofilament or a multifilament. Further, in the above structure, it is preferable that the multifilaments are braided or twisted.

In the above structure, the crosslinked structure preferably has an insoluble amount after the crosslinking treatment of 0.1% to 50% by weight with respect to the solvent in which the resin before the crosslinking treatment dissolves.

Next, the method for producing a fishing line of the present invention is a method for producing a fishing line composed of filaments made of synthetic resin, which is characterized in that the filaments are crosslinked by irradiation treatment.

In the above construction, the radiation is an electron beam, and the irradiation dose at the time of irradiation is 0.1 Mrad to 2
It is preferably in the range of 00 Mrad.

[0016]

According to the above-mentioned structure of the present invention, a fishing line formed of a filament made of a synthetic resin, at least the surface of which is crosslinked, is scratched by friction with rocks on the bottom of the water. That is, it is possible to realize a fishing line with good durability, which is strong against so-called root deviation and excellent in sustaining the effect. Furthermore, it is possible to realize a fishing line with excellent durability and several stages of abrasion resistance without deteriorating tensile strength, knot strength, water resistance and the like.

Next, according to the method for producing a fishing line of the present invention, a filament made of a synthetic resin is subjected to radiation treatment to be crosslinked, whereby tensile strength, knot strength, water resistance, etc. are not deteriorated and abrasion resistance is reduced. It is possible to obtain a fishing line with improved durability and excellent durability.

The present invention will be described in more detail below. In the present invention, the synthetic resin that is the base of the fishing line includes polyamides such as nylon 6, nylon 66, and nylon 6/66 copolymer, polyesters such as polyethylene terephthalate, polyvinylidene fluoride, polyvinylidene fluoride and tetrafluoroethylene. Fluorine-based resins (fluorine-containing resins) made of copolymers with the like, ultra-high-molecular-weight polyethylene, polyolefins made of polypropylene, and the like.

These are formed into filaments by melt spinning by a conventional method. The filament may be either a monofilament or a multifilament. During melt spinning, optical brighteners, colorants, antioxidants, light stabilizers, weather resistance agents, antistatic agents, lubricants, as long as the characteristics are not impaired.
Additives such as plasticizers can be added.

Next, drawing is performed to give a high tensile strength and a high knot strength to form a fishing line. After that, a commonly used smoothing agent such as silicone oil and various waxes is applied to finish the fishing line. When using multifilaments, braiding or twisting is preferable in order to improve the convergence and handling.

The radiation used for irradiation in the present invention includes α rays, β rays, γ rays, X rays, electron beams, and
Various ionizing radiations such as neutron rays can be used. However, it is not limited to the above-mentioned radiation.

Of these ionizing radiations, it is preferable to use an electron beam in terms of workability, economy, adjustment of the degree of crosslinking, and the like. The irradiation dose of the electron beam is preferably 0.1 Mrad to 200 Mrad. 0.1 Mra
If it is less than d, the crosslinking effect is too small. 200 Mrad
If it exceeds the range, the fishing line contracts or is colored, which is not preferable. Furthermore, the biggest problem is that the tensile strength and knot strength are reduced.

In particular, in the case of a fishing line made of polyvinylidene fluoride, care must be exercised in setting the irradiation dose so that it does not become too large. The presence and degree of the crosslinked structure of the present invention can be determined from the amount of the polymer dissolved in a solvent. The amount of insoluble components increases as the degree of crosslinking increases. More specifically, in the case of nylon, the untreated product is soluble in formic acid, but becomes difficult to dissolve by the treatment of the present invention. In the case of polyester, the untreated product is dissolved in a mixed solution of phenol and ethane tetrachloride, but it becomes difficult to dissolve by the treatment of the present invention. Whether or not it is crosslinked in this way can be determined from the solubility in a solvent. The amount of the portion having such a crosslinked structure increases as the irradiation dose increases. Further, if only the surface layer portion of the filament is cross-linked, it is possible to improve the wear resistance and obtain a fishing line with good durability without lowering the tensile strength, knot strength, water resistance and the like.

For the purpose of the present invention, the insoluble amount is preferably about 0.1% by weight to 50% by weight. On the contrary, if the amount of the insoluble matter is increased, the tensile strength and the knot strength are lowered, so that it is not preferable even if the abrasion resistance is improved.

[0025]

EXAMPLES The present invention will be described in more detail with reference to examples. The wear resistance, tensile strength, knot strength and water resistance of the fishing line of the present invention were measured by the following methods. (1) Tensile strength, cutting elongation Using Autograph DSC-500 manufactured by Shimadzu Corporation, sample length 25 cm, tensile strength 30 cm / min, n = 10
It was calculated from the average value of. (2) Knot strength Measured according to JIS L1034. (3) Wear resistance A specific measuring method will be described with reference to FIG. In FIG. 1, 1 is a reciprocating body such as a piston or a cylinder (stroke length: 75 mm, 2 is a constant load, 3 is a fishing line, 4 is a friction body (matte nickel plated body). Then, apply a load of 500 g, and
It was rubbed at 0 times / minute and evaluated by the number of times until cutting (n = 5). (4) Persistence of abrasion resistance After being immersed in water for 24 hours, it was formed into a ring shape that fits in the palm of the hand and rubbed several times, and then the abrasion resistance was evaluated.

(Example 1) Polyamide having a copolymerization ratio of nylon 6 and nylon 66 of 85:15 (weight ratio) (intrinsic viscosity: 3.4) was melt-spun through a nozzle having a pore diameter of 1.0 mm and then water-spun. After cooling, a draw ratio of 5.6 was drawn to obtain a nylon monofilament having a diameter of 0.238 mm. In the final step, a silicone emulsion was applied to complete the fishing line.

The tensile strength of the obtained filament is 4.3.
7 kg, knot strength 4.26 kg, cutting elongation 30.9%
The physical properties of Next, this fishing line was applied with an electron beam irradiation device (manufactured by Nisshin High Voltage Co., Ltd.) under a pressure voltage of 3
An electron beam of 00 KV and an electron beam dose of 5 Mrad was irradiated.

The physical properties of the fishing line after irradiation have a tensile strength of 4.2.
5 kg, knot strength 4.06 kg, cutting elongation 28.9%
The physical properties of The ratio of the insoluble component to formic acid was 28% by weight.

The wear resistance and the durability of the wear resistance are shown in Table 1 below.

[0030]

[Table 1]

Actually, in the field test in which the mejina (gure) fishing was performed in a rocky place, it was tested as Harris, but the comparative example (without irradiation) was cut 6 times a day, whereas the product of this example was used. There was nothing. Further, the fishing line was improved in abrasion resistance without lowering tensile strength, knot strength, water resistance and the like, and was a fishing line with good durability.

(Example 2) Vinylidene fluoride pellets having an intrinsic viscosity of 1.4 were melt-spun through a nozzle having a pore size of 1.0 mm, cooled with water, and then 6.0 times in a glycerin bath at 170 ° C. By stretching, a vinylidene fluoride monofilament having a diameter of 0.283 mm was obtained. In the final step, a silicone emulsion was applied to complete the fishing line.

The tensile strength of the obtained filament is 5.4.
3 kg, knot strength 4.20 kg, cutting elongation 26.8%
It had the physical properties of Next, this fishing line was irradiated with an electron beam having a pressing voltage of 300 KV and an electron beam irradiation amount of 0.5 Mrad using an electron beam irradiation device (manufactured by Nisshin High Voltage Co., Ltd.).

The physical properties of the fishing line after irradiation have a tensile strength of 5.3.
1kg, knot strength 4.15kg, cutting elongation 27.2%
It had the physical properties of The wear resistance and the durability of the wear resistance are shown in Table 2 below.

[0035]

[Table 2]

As is apparent from Table 2, the product of this example is a fishing line having improved wear resistance and good durability without lowering tensile strength, knot strength, water resistance and the like as in Example 1. there were.

Example 3 A multifilament made of ultra-high molecular weight polyethylene, 100 denier 96 filaments ("Dyneema" manufactured by Toyobo Co., Ltd.) was braided into 4 sets of 4 sets. Next, surface processing was performed by resin processing with a urethane resin solution containing a colorant. In the final step, a silicone emulsion was applied to complete the fishing line.

Tensile strength is 11.3 kg and knot strength is 4.
It had physical properties of 40 kg and a breaking elongation of 6.0%. Next, this fishing line was irradiated with an electron beam having a pressing voltage of 750 KV and an electron beam irradiation amount of 15 Mrad using an electron beam irradiation device (manufactured by Nisshin High Voltage Co., Ltd.).

The physical properties of the fishing line after irradiation have a tensile strength of 10.
It had physical properties of 5 kg, knot strength of 4.10 kg, and breaking elongation of 6.2%. The wear resistance and the durability of the wear resistance are shown in Table 3 below.

[0040]

[Table 3]

As is clear from Table 3, like Example 1, the product of this Example is a fishing line having improved wear resistance and good durability without lowering tensile strength, knot strength, water resistance and the like. there were.

[0042]

As described above, the fishing line obtained by the present invention has the following effects. (1) The fishing line of the present invention has excellent wear resistance, which is not found in conventional fishing lines. For this reason, a fishing line that is resistant to so-called root displacement, which is scratched by friction with rocks on the bottom of the water, has become possible. (2) Moreover, the effect does not decrease even with repeated repeated use as in the prior art, and a fishing line with excellent durability and excellent durability can be obtained. (3) This is because the effect of the present invention is that the electrons accelerated at a high speed by the irradiation of radiation, which is a feature of the present invention, give energy to the substrate and crosslink the substrate itself. This is probably because there is no dropout or adverse effect because no means such as heat and heat is used.

Since no other substance is added to the substrate, the original properties are maintained and the tensile strength and knot strength do not decrease. (4) In addition, the production method of the present invention efficiently and reasonably reduces tensile strength, knot strength, water resistance, etc.
It is possible to improve wear resistance and realize a fishing line with good durability. That is, it is rational because it uses no water, heat, or chemicals.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a method for measuring wear resistance used in Examples of the present invention.

[Explanation of symbols]

 1 Reciprocating body 2 Load 3 Fishing line 4 Friction body (Pattern nickel plated body)

Claims (9)

[Claims] 1. A fishing line formed of a filament made of synthetic resin, wherein at least the surface of the fishing line is crosslinked. 2. The fishing line according to claim 1, wherein the crosslinked structure is formed by irradiation treatment. 3. The fishing line according to claim 1, wherein the radiation irradiation treatment is an electron beam irradiation treatment. 4. The fishing line according to claim 1, wherein the synthetic resin is at least one thermoplastic resin selected from a polyamide resin, a fluorine-containing resin, a polyester resin, and an ultrahigh molecular weight polyolefin resin. 5. The fishing line according to claim 1, wherein the filament is a monofilament or a multifilament. 6. The fishing line according to claim 5, wherein the multifilament is braided or twisted. 7. The crosslinked structure is such that the insoluble amount after the crosslinking treatment is 0.1% by weight to the solvent in which the resin before the crosslinking treatment is dissolved.
The fishing line according to claim 1, which is in a range of 50% by weight. 8. A method for producing a fishing line comprising filaments made of synthetic resin, wherein the filaments are cross-linked by irradiation treatment with radiation. 9. The method for producing a fishing line according to claim 8, wherein the radiation is an electron beam, and the irradiation dose at the time of irradiation is in the range of 0.1 Mrad to 200 Mrad.