JPH0672375B2 - Fishing line with excellent curling resistance - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fishing line used for fishing, and particularly excellent curling property and kink property while satisfying basic properties as a fishing line, and further improving knot strength. The present invention relates to the structure of a fishing line made possible.

[Prior Art] Conventionally, synthetic resin wire made of polyamide, polyester, polyvinylidene fluoride resin, etc. has been generally used for fishing line, and piano steel wire and stainless steel wire are used to improve tensile strength. In some cases, a metal wire made of tungsten steel wire or the like is used. The basic characteristics of such a fishing line are that it has a low draining resistance, a good hitting sensitivity, a small deterioration in water in seawater and rivers, and a suppleness. Further, since different characteristics are required for the fishing line depending on the type of fish to be caught and the fishing method, the above materials are selected according to the required characteristics. For example, in the case of companion fishing for sweetfish, because the fishing method is to pull out at the same time as mating in a fast-flowing river, one with low draining resistance, good sensitivity to hits, and high tensile strength against impact force should be used. Required. Therefore, for the fishing line for ayu fishing, a metal wire having a tensile strength about 1.5 times greater than that of the synthetic resin wire and a thin wire diameter is preferable.

Further, as a fishing line for satisfying the above-mentioned demand, there is a fishing line described in the specification of Japanese Patent No. 175396 or a fishing line disclosed in JP-A-62-257331.

The fishing line described in the above patent specification has a structure in which the surface of a twisted wire formed by twisting a plurality of iron wires is coated with a resin.

Further, the fishing line described in the above publication has a structure in which the surface of a twisted wire formed by twisting a plurality of amorphous metal wires is covered with a synthetic resin, and according to this publication, each of conventional piano steel wires and the like. It is said that the tensile strength can be improved while making the wire diameter thinner than the metal wire.

[Problems to be solved by the invention]

By the way, although the amorphous metal stranded wire according to the above-mentioned conventional publication is resin-coated and the iron-stranded wire described in the above patent specification is resin-coated, which is superior in tensile strength as compared with each conventional metal wire, For example, when the fishing lines are tied together, or when the fishing line is tied to the fishing hook, there is a problem that the connection strength is low and the wire is easily broken. To prevent this, a method of purposely adhering with an adhesive is adopted.

Further, the conventional fishing line has a problem that curling characteristics and kink characteristics are poor when an impact force is applied. Therefore, the resin-coated one of these twisted metal wires has a tensile strength higher than that of the synthetic resin wire, but it is hardly popularized due to the above-mentioned weakness peculiar to the metal wire, and the synthetic resin wire has long dominated the market. What is this curling?
After the fishing line is pulled into tension by a large load,
When this load is suddenly removed, it means that the fishing line changes in a wavy shape in the longitudinal direction. When this curl (wave) is large, the yarn is extended and the tensile strength is reduced. A kink is a state in which a wavy curled portion is bent at an acute angle, which may cause a wire breakage, and the occurrence of this kink is a fatal injury as a fishing line. Therefore, it is important to minimize the occurrence of curling and kinking in order to improve the life of the fishing line.

Here, in order to improve the curling and kink characteristics, it is conceivable to use a wire diameter that can withstand impact force, but in this case, the thicker the fishing line, the greater the underwater resistance and the basic fishing line. The characteristics cannot be satisfied.

An object of the present invention is to provide a fishing line which can improve the knot strength while satisfying the basic properties as a fishing line, and which is excellent in curling characteristics and kink characteristics.

[Means for solving problems]

The inventors of the present invention have conducted extensive studies to achieve the above object, and found that the occurrence of curls and kinks is related to the twist pitch of the steel wire and the thickness of the synthetic resin coated on the twisted wire. It was That is, the fishing line disclosed in the prior art merely forms a thin resin film for the purpose of preventing the twisted wire from coming loose, and defines the twisted wire pitch for the purpose of improving roundness and appearance. Is. Therefore, the conventional fishing line cannot be expected to improve curling characteristics. The inventor
The present invention was made on the idea that curling characteristics can be improved by defining the thickness of the synthetic resin and the twisted wire pitch.

Therefore, the present invention, a plurality of piano wire or stainless steel wire Ni plating film is coated on the outer surface by electroplating,
The twisted wire is formed into a twisted wire so that the twisting pitch is 13 to 20 times the diameter of the twisted wire, and the twisted wire is coated with a synthetic resin having a thickness of 4 μm or more. The fishing line is characterized by being set to be not less than%.

Here, the reasons for limiting various requirements in the present invention will be described.

First, the reason why the electric Ni plating film is formed on the piano wire or the like is to increase the adhesive force with the exterior resin and to prevent deterioration in water.

In addition, coating the outer surface of the stranded wire with a resin increases the roundness as a whole and reduces the drainage resistance,
This is to protect the steel wire from water, seawater, etc., and further improve the knot strength. As the synthetic resin, a thermoplastic resin such as polyamide, polyester, or polyurethane can be adopted, and as a method for coating these, a means such as dip coating of dipping in a resin bath can be adopted. The thickness of the resin means 1/2 of the value obtained by subtracting the outer diameter D of the circumscribed circle of the twisted wire 3 from the outer diameter of the fishing line 1 as shown in FIG.
If the resin thickness t is less than 4 μm, the above effects cannot be sufficiently obtained. On the other hand, the upper limit of the resin thickness t is not particularly limited, but if it is too thick, the tensile strength is reduced and the characteristics such as drainage resistance are deteriorated. From this point, the resin thickness is 4 μm or more, and the stranded wire diameter is 0.1 to 0.5.
A double range is preferable.

Furthermore, in the present invention, the twist pitch is set to 13 to 20 times the twisted diameter because it has been found that curl generation can be significantly reduced by setting it within this range. Also,
If the twist pitch is less than 13 times, the residual strain of the steel wire becomes large, and if it exceeds 20 times, it returns to its original state due to elasticity, and there is a problem that it becomes difficult to maintain the shape as a twisted wire. The number of steel wires forming the stranded wire is not particularly limited, but 7
When the main twist is made, it is structurally stable, it is easy to obtain the roundness, and the appearance is good.

[Action]

According to the fishing line excellent in curling resistance according to the present invention,
Since the thickness of the synthetic resin is 4 μm or more and the twist pitch is 13 to 20 times the wire diameter, the number of curls and kinks generated when an impact force acts can be reduced, and even if curling occurs, twisting The wire strength is not reduced, and the life can be greatly extended.

In addition, since the resin thickness is 4 μm or more, the knot strength can be improved to 50% or more of the twisted wire strength, and the problem of easy disconnection when tied like the conventional amorphous metal wire can be solved, and of course an adhesive is used. You don't even have to.

Furthermore, since the electric Ni plating film is formed on the surface of the steel wire, the adhesion between the steel wire and the resin film can be improved. From this point, the knot strength can be improved and the resin can be prevented from cracking or peeling. In addition, the Ni plating film can prevent deterioration of the steel wire in water.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 are views for explaining a fishing line having excellent curling resistance according to an embodiment of the present invention.

In the figure, 1 is the fishing line of this embodiment, which is
The Ni plating 2 bundles seven steel wires 3a to 3g coated by electroplating, and the central steel wire 3a of this is made into a linear shape and the outer peripheral steel wires 3b to 3g are twisted in a spiral shape to form a stranded wire 3. It is formed by further forming a synthetic resin 4 on the stranded wire 3.

The twist pitch P of the twisted wire 3 is 13 to 20 times the diameter D of the circumscribed circle of the twisted wire 3, and the thickness t of the synthetic resin 4 is 4 μm or more.

As described above, according to the fishing line 1 of this embodiment, the twisted wire 3 is coated with the synthetic resin 4 having a thickness of 4 μm or more, and the twist pitch P is set to 13 to 20 times the twisted wire diameter D.
The kink characteristics can be greatly improved and the life can be extended.

In addition, the Ni wire 2 is applied to the steel wires 3a to 3g, and the resin thickness is set to 4 μm or more, so the adhesion between the steel wires and the resin is improved, and the knot strength is greatly increased to 50% or more of the twisted wire strength. 1 μm for stranded wire made of conventional amorphous metal wire which can be improved
It is possible to solve the problem of easy disconnection at the time of binding such as when a resin coating of a certain degree is formed.

Furthermore, since the surfaces of the steel wires 3a to 3g are plated with Ni, deterioration in water can be prevented, and the adhesiveness with the synthetic resin 4 can be improved, whereby peeling of the resin at the knot portion can be prevented. As a result, it is possible to prevent generation of sound in water and loosening of the knot.

Here, an experimental result for confirming the effect of the fishing line 1 of the present embodiment will be described.

First, for the fishing line used in this experiment, we used a piano wire and a stainless steel wire (SUS304) as the steel wire, and twisted 7 each, and twisted so that the twist pitch was 12 to 23 times the diameter of the twisted wire. A line was formed. Further, each strand was coated with a synthetic resin having a thickness of 2 to 10 μm to form a fishing line sample having a diameter of 82 to 95 μm. For comparison, a steel wire not coated with Ni plating was also used. And the stranded wire strength of each fishing line by tensile test,
The knot strength was measured, and then the curl and kink characteristics were examined. This characteristic was examined by the number of curls and kinks per 250 mm when an impact load of 0.6 kgf was applied to each fishing line. Here, the impact load was applied by suddenly cutting the fishing line with a weight of 0.6 kgf suspended. In addition, the peeling state of the resin at the knot portion of each fishing line was also examined.

The results are shown in the table. In the table, No. 1 to 6 are piano wires, No. 7
Is a stainless steel wire. As is clear from the table,
In each sample No. 1 to 7, there is almost no difference in the characteristics of the stranded wire strength and knot strength in the static load test. However, in the impact load test, the resin thickness is 2 μm or less (No. 1),
When the twist pitch is 12 times (No. 3) and 23 times (No. 4), the number of curls is 3 to 8 and the number of kinks is 1 to 5, which may cause wire breakage. In addition, when the Ni plating is not applied (No. 5), the number of kinks and curls is 3.5, which is characteristic deterioration. This is presumably because the resin thickness and the stranded wire pitch were within the specified range, but the surface treatment of the steel wire was not performed, and therefore the adhesiveness of the resin was insufficient. Moreover, in this case, the resin at the knot has peeled off,
This may result in loose knots, noise in the water, or deterioration in the water.

On the other hand, in the samples (No. 2, No. 6 and No. 7) according to the present example, the number of curls is 2 to 4 while satisfying both the twisted wire strength and the knot strength. Has never occurred. The practical use conditions of fishing line are
Since the impact load is repeated, it is essential for extending the life of the fishing line that the occurrence of curl due to this impact load is small. The life can be improved.

〔The invention's effect〕

As described above, according to the fishing line having excellent curling resistance of the present invention, the electric Ni plating film is formed on the stranded wire made of a plurality of piano wires or stainless steel wires, and the thickness is 4 μm.
m or more synthetic resin is coated, and the twist pitch is 13
Since it is up to 20 times, the knot strength can be improved to 50% or more of the stranded wire strength, and curling characteristics and kink characteristics can be improved, and the life can be extended.

[Brief description of drawings]

FIG. 1 is a cross-sectional view for explaining a fishing line excellent in curling resistance according to an embodiment of the present invention, and FIG. 2 is a schematic view showing a twisted state thereof. In the figure, 1 is fishing line, 2 is Ni plating (corrosion resistant metal plating), 3a to 3g are steel wires (piano wire or stainless steel wire),
3 is a twisted wire, 4 is a synthetic resin, P is a twist pitch, D is a twisted wire diameter, and t is a resin thickness.

Claims (1)

[Claims] 1. A fishing line obtained by coating a synthetic resin on a stranded wire formed by twisting a plurality of piano wires or stainless steel wires, wherein the outer surface of the steel wire is coated with a Ni plating film by electroplating. Pitch is 13 to 20 of the above stranded wire diameter
A fishing line excellent in curling resistance, characterized in that the synthetic resin has a thickness of 4 μm or more and the knot strength of the fishing line is 50% or more of the twisted wire strength.