JPH02210079A - Fishing line excellent in curling resistance characteristic - Google Patents

Abstract

PURPOSE:To obtain a fishing line, increased in knot strength and improved in curling and kinking characteristics by twisting plural steel wires at a specific pitch and coating the outer periphery thereof with a synthetic resin to a specified thickness or above. CONSTITUTION:Plural steel wires having the outer surfaces thereof plated with a corrosion-resistant metal are twisted to provide a diameter of 13-20 times based on the diameter of the twisted wires and the outer peripheries of the objective twisted wires are then coated with a synthetic resin so as to afford >=4mum thickness. The knot strength can be improved to >=50% of the tensile strength by coating the twisted wires with the synthetic resin to >=4mum thickness.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fishing line used for fishing, and particularly to a fishing line that satisfies the basic properties of a fishing line, has excellent curling properties and kink properties, and has improved knot strength. This article relates to the fjl construction of fishing line.

[Conventional technology]

Traditionally, fishing lines have been made of synthetic resin wires made of polyamide polyester, polyvinylidene fluoride resin, etc., or metal wires made of piano steel wire, stainless steel wire, tungsten steel wire, etc. I& line is adopted. The basic characteristics of such a fishing line include low drainage resistance, good hit sensitivity, low deterioration in water in seawater or rivers, and flexibility. In addition, fishing line requires different characteristics depending on the type of fish to be caught and the method of fishing, so the above materials are selected according to the required characteristics.For example, when fishing for sweetfish, In fast-moving rivers, the method of fishing is to match and pull out at the same time, so a fish with low drainage resistance, good sensitivity to hit, and high tensile strength against impact force is required. For fishing lines, it is preferable to use gold M wire, which has a tensile strength about 1.5 times greater than synthetic resin wire and has a thin wire diameter.

Furthermore, there is a conventional fishing line described in Japanese Unexamined Patent Publication No. 62-257331. This fishing line is made by twisting together multiple amorphous metal wires and coating them with synthetic resin.According to this fishing line, the wire diameter is smaller than that of conventional metal wires such as piano steel wire. Therefore, tensile strength can be improved.

[Problem that the invention seeks to solve]

By the way, although the amorphous metal wire according to the above-mentioned conventional publication has superior tensile strength compared to conventional metal wires,
For example, when tying fishing lines together or tying them to a fishing hook, there is a problem in that the knots are not strong enough and are easily broken, and to prevent this, methods of bonding with adhesives have been adopted.

Furthermore, the conventional fishing line described above has a problem in that it has poor curling properties and kink properties when subjected to impact force. This curling refers to the fact that after a fishing line is pulled under tension by a large load, when this load is suddenly removed, the shape of the fishing line changes in the longitudinal direction into a wave-like shape. If it is too large, the yarn will become elongated and its tensile strength will decrease. Furthermore, a kink refers to a state in which the wavy curled part is bent at an acute angle, which may cause the wire to break, and the occurrence of this kink can be fatal to the fishing line. Therefore, it is important to minimize the occurrence of curling and kinging in order to improve the life of the fishing line.

Here, to improve the above curling and kink characteristics! Withstand lTl1 force! It is conceivable to make the diameter I, but in this case, the underwater resistance increases as the fishing line becomes thicker, and the basic characteristics of a fishing line cannot be satisfied.

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

[Means for solving problems]

In order to achieve the above object, the inventor of the present invention conducted extensive studies and discovered that the occurrence of curls and kings is related to the twisting pitch of the steel wire and the thickness of the synthetic resin coated on the twisted wire. Ta. In other words, the fishing lines disclosed in previous publications are simply covered with a thin resin film to prevent the strands from coming apart, or the strand pitch is specified to improve roundness and appearance. It is. Therefore, the same curling characteristics cannot be expected with conventional fishing lines.
The present invention was developed based on the idea that the curling characteristics could be improved by specifying the thickness of the synthetic resin and the strand pitch.

Therefore, the present invention involves twisting a plurality of piano wires or stainless steel wires whose outer surfaces are coated with corrosion-resistant metal by plating so that the twisting pitch of the stranded wires is 13 to 20 times the diameter of the stranded wires. The fishing line is coated with a synthetic resin with a thickness of 4 μm or more, and the knot strength of the fishing line is increased to 5 μm, which is the strength of the twisted wire.
The fishing line is characterized by having a content of 0% or more.

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

First, the reason why the piano wire or the like is coated with a corrosion-resistant metal is to increase the adhesive strength with the exterior resin and to prevent deterioration in water. This plating metal includes Nl, Cu, Zn.
, Aj, and the like can be used, and wet plating such as electroplating and hot-dip plating, or dry plating can be used as a coating method for these metals.

In addition, the outer surface of the stranded wire is coated with resin to increase the overall roundness and reduce drainage resistance.
This is to protect the steel wire from water, seawater, etc. and to further improve knot strength. As this synthetic resin, thermoplastic resins such as polyamide, polyester, polyurethane, etc. can be used, and as a method for coating them, means such as dipping in a resin bath can be used. As shown in FIG. 1, the thickness of the resin is the value A obtained by subtracting the outer diameter of the circumscribed circle of the stranded wire 3 from the outer diameter of the fishing line 1, and this resin thickness t is 4μ. If the resin thickness is less than -, the above-mentioned effects cannot be obtained sufficiently.On the other hand, although the upper limit of the resin thickness t is not particularly limited, if it is too thick, the tensile strength decreases and properties such as drainage resistance deteriorate. From this point of view, the resin thickness should be 4μ or more, and the stranded wire diameter should be 0.1 to 0.
．． A range of 5 times is preferred.

Furthermore, in the present invention, the twist pitch is set to 13 to 20 times the curling diameter because it has been found that curling can be significantly reduced if the twist pitch is within this range. Further, if the twisting pitch is less than 13 times, the residual strain of the steel wire becomes large, and if it is more than 20 times, the steel wire returns to its original state due to elasticity, making it difficult to maintain the shape of the twisted wire. The number of steel wires constituting the above-mentioned stranded wire is not particularly limited, but when stranded with 7 steel wires, it is structurally stable,
It is easy to obtain roundness and the appearance is good.

[Effect]

According to the fishing line with excellent curling resistance according to the present invention,
The thickness of the synthetic resin is 4 μ- or more, and the twisting pitch is 13 to 20 times the wire diameter, so the number of curls and kinks that occur when impact force is applied can be reduced, and even if curling occurs, the twist pitch is 13 to 20 times the wire diameter. It does not reduce the strength of the stranded wire and can significantly extend its life.

In addition, since the resin thickness is set to 4μ or more, the knot strength can be improved to more than 50% of the stranded wire strength, which solves the problem of easy disconnection when tying conventional amorphous metal wires. There's no need to use it.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

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

In the figure, reference numeral 1 designates the fishing line of this embodiment, which consists of a bundle of seven steel wires 3a to 3g each coated with NI plating 2 on the surface, with the central steel wire 3a being straight and the outer steel wire 3b
~3 g are twisted together in a spiral to form a stranded wire 3, and the stranded wire 3 is further coated with a synthetic resin 4.

Further, the twist pitch P of the twist N3 is the twist Nll3
The thickness t of the synthetic resin 4 is 13 to 20 times the diameter of the circumscribed circle, and the thickness t of the synthetic resin 4 is 4 μm or more.

In this way, according to the fishing line 1 of this embodiment, the strands 3 are 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 diameter of the strands, so that curling, Kink characteristics can be greatly improved and lifespan can be extended.

In addition, Nl plating 2 is applied to the steel & I3a~3g, and the resin thickness is set to 4 μ- or more, which improves the adhesion between the steel wire and the resin, and significantly increases the knot strength to more than 50% of the stranded wire strength. It is possible to solve the problem of wire breakage when tying, which occurs when a resin coating of about 1 μm thick is formed on conventional stranded wires made of amorphous metal wires.

In addition, Ni plating is applied to the surface of steel & i3a to 3g, which prevents deterioration in water and also prevents deterioration in water.
This improves the adhesiveness of the resin at the nodule.
can be prevented. As a result, it is possible to prevent noise from occurring underwater and loosening of the knot.

Here, experimental results for confirming the effects of the fishing line 1 of this example will be explained.

First, for the fishing lines used in this experiment, piano wire and stainless steel II (SUS304) were used as steel wires, and seven strands of each were twisted together, and the twisting pitch was 12 to 23 times the diameter of the stranded wire. formed a line. Furthermore, each of the strands was coated with a synthetic resin having a thickness of 2 to 10 .mu.m to prepare fishing line samples having a diameter of 82 to 95 .mu.m. Incidentally, for comparison, a&I not coated with Ni plating was also adopted. Then, the strand strength and knot strength of each fishing line were measured by a tensile test, and the curl and kink properties were then examined. This characteristic applies to each fishing line.
0.6ktf opposition Ii! 250 f with load
The number of curls and kinks generated per i was investigated.

Here, the above-mentioned impact load was applied by abruptly cutting the fishing line while a weight of 0.6 krf was suspended. In addition, the peeling state of the resin at the knot of each of the above fishing lines was also investigated.

The results are shown in Table 0, where Nll to 6 are piano wires, N
17 is a stainless steel wire. As is clear from the table, there is almost no difference in the characteristics of each sample Arashi 1 to 7 in terms of strand strength and knot strength in the static load test, however, in the impact load test, the resin thickness was less than 2 μm (Nll).
When the twisted wire pitch is 12 times (113) and 23 times (Arashi 4), the number of curls is 3 to 8 and the number of kinks is 1 to 5, and there is a risk of wire breakage. Further, when Ni plating is not coated (PkL5), the number of kinks and curls is 3.5, which indicates that the characteristics are deteriorated. This is considered to be because the adhesiveness of the resin was insufficient because the resin thickness and strand pitch were both within the specified range, but no surface treatment of 11vA was performed. In addition, in this case, the resin at the knot has peeled off, causing loosening of the knot, generation of underwater noise, underwater deterioration, etc.

On the other hand, in the samples according to this example (positive 2° Arashi 6 and Ban 7), the number of curls was 2 to 4, and no kinks occurred, although the strand strength and knot strength were satisfactory. In practice, fishing lines are used under repeated impact loads, so it is essential to minimize the occurrence of curling due to impact loads in order to extend the life of the fishing line. As shown in the figure, there is less curling, and therefore the lifespan can be dramatically improved.

〔Effect of the invention〕

As described above, according to the fishing line with excellent curling resistance of the present invention, a plurality of stranded wires made of piano wire or stainless steel wire are coated with a synthetic resin having a thickness of 4 pm or more, and the stranded wire pitch is adjusted to match the wire diameter. Since it is 13 to 20 times greater, the knot strength can be improved to 50% or more of the stranded wire strength, which has the effect of improving curling properties and kink properties and extending life.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view for explaining a fishing line with excellent curling resistance according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing the state in which the fishing line is twisted. In the figure, l 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 stranded wire, 4 is synthetic resin, P is stranded wire pitch,
D is the twisted wire diameter, and t is the resin thickness. Patent applicant: Kobe Steel, Ltd. Representative: Patent attorney: Tsutomu Shimofu Figure 2

Claims (1)

[Claims] (1) A fishing line made of a stranded wire made by twisting multiple piano wires or stainless steel wires and coated with a synthetic resin, in which the outer surface of the steel wire is coated with a corrosion-resistant metal by plating, and the twist pitch is as above. It is 13 to 20 times the diameter of the stranded wire,
A fishing line with excellent curling resistance, characterized in that the thickness of the synthetic resin is 4 μm or more, and the knot strength of the fishing line is 50% or more of the strand strength.