JP2002191274A - Metal-containing fishing line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a fishing line having a specific gravity which can be made higher than that of a conventional fishing line and is an arbitrary value without being limited to an inherent specific gravity which a material has. SOLUTION: A metal-containing resin is used as a material, made into a melt spinning monofilament which may have a tapered shape or a metal spinning monofilament having a hollow structure and the monofilament is coated with a resin which may optionally contain a metal so that a tapered shape is formed to give the objective fishing line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishing line, and more particularly to a fishing line containing metal.

[0002]

2. Description of the Related Art Fishing line materials include nylon, namely nylon 6, nylon 6,6, nylon 6,10 or copolymerized nylon, polyester, polyvinylidene fluoride or ultra high molecular weight. There are polyethylenes and the like, which are melt-spun into monofilaments, and in some cases stretched, are used as fishing lines. Such conventional monofilaments are:
It only had the specific gravity of the material. On the other hand, there was a demand from the market to change the specific gravity of the fishing line delicately in response to changes in weather, tide, and the like. A commercially available fishing line having a high specific gravity includes a fishing line made of fluorocarbon, but the fishing line has a specific gravity of only about 1.78.

On the other hand, fishing lines used for fly fishing, which are often performed in mountain streams and lakes, include:
As a core yarn, a monofilament such as nylon or tetron, which is coated with foamed polyvinyl chloride, is often used. The coating gives the yarn a weight, making it easy to cast even a little. However, in such a fishing line, the foamed polyvinyl chloride used for coating does not contribute to the strength of the fishing line, so the strength of the core line must be sufficiently increased. In addition, the foaming of polyvinyl chloride is technically difficult, and the production process is complicated, so that the price of the product is affected and the cost is increased.
Furthermore, since the PVC used for coating contains chlorine atoms and can cause dioxin, which is regarded as a problem during incineration, it is environmentally unfavorable. There is also a place toward.

[0004]

According to the present invention, it is possible to make the specific gravity larger than that of the conventional fishing line.
It is an object of the present invention to provide a fishing line that can have any specific gravity without being limited to the specific gravity of the material.

[0005]

Means for Solving the Problems As a result of intensive studies, the present inventors have found that the above object can be achieved by using a resin containing metal. That is, a fishing line including a monofilament made of a resin containing a metal has a higher specific gravity than a conventional monofilament fishing line when a metal having a large specific gravity such as tungsten is used as the metal. Further, by adjusting the content of the metal to be contained, a fishing line having an arbitrary specific gravity can be obtained.

The present inventors have further studied the above-mentioned fishing line, and found that by giving a monofilament fishing line made of a resin containing metal to a hollow structure having two or more hollows, the fishing line can be given buoyancy. I learned that I can do it. So, like a traditional fly line,
Since it is not necessary to shoot vinyl chloride to float the fishing line, the manufacturing process is simplified, and therefore, an inexpensive product can be provided. Further, there is also a finding that a fishing line coated with a resin, preferably a tapered shape, using a monofilament as described above as a core yarn is superior in abrasion resistance and strength compared to a fly line coated with foamed polyvinyl chloride. Obtained.

The present invention provides (1) a fishing line comprising a monofilament made of a resin containing a metal,
(2) The fishing line according to (1), wherein the monofilament has a hollow structure having two or more hollows.
(3) The fishing line according to (1), wherein the yarn according to (2) is used as a core yarn and further coated with a resin, and (4) the resin contains a metal. (5) a fishing line characterized in that a core yarn having a hollow structure having two or more hollows is coated with a resin containing a metal, and (6) a taper. (7) The fishing line according to any one of (1) to (5), wherein the metal is tungsten. The present invention relates to a fishing line and (8) the fishing line according to any one of the above (1) to (7), wherein the specific gravity is 0.97 to 7.5.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The fishing line of the present invention is provided by making a monofilament from a thermoplastic resin containing a metal by melt spinning. As the thermoplastic resin used here, those known per se may be used,
Specifically, nylon, that is, nylon 6, nylon 6,
6, nylon 6,10 or copolymerized nylon, polyester, polyvinylidene fluoride, ultra high molecular weight polyethylene and the like are preferable. In particular, the present invention has been applied to nylon yarns which have been frequently used in spite of problems as described above, and has succeeded in providing fishing lines having an arbitrary specific gravity.

Here, as the metal, for example,
Iron, copper, zinc, tin, nickel, tungsten, or the like, alone or as a mixture or alloy is used. Among them, tungsten is preferable because it is easy to give weight to the yarn, and therefore, the effect of increasing the specific gravity while minimizing the decrease in strength is exhibited by adding a small amount.

[0010] These metals can be applied to the present invention irrespective of whether they are powdery or granular. The average particle size is about 10 μm or less, preferably about 5 μm or less. If the particle size of the metal is too large, the overall uniformity after mixing becomes poor, so the above range is preferable. In addition, the amount of addition, considering the performance of the line when formed into a fishing line,
About 1 to 90 parts by weight, preferably about 5 to 70 parts by weight, is added to 100 parts by weight of the thermoplastic resin.

The thermoplastic resin containing a metal for producing the fishing line of the present invention is produced by melting and kneading the thermoplastic resin with a single-screw or twin-screw kneader known per se. From the thus obtained metal-containing thermoplastic resin, a widely used melt-spinning method, for example, a cooling medium such as water at about 0 to 80 ° C. is obtained by spinning a yarn melt-spun from a melt-spinning apparatus having a spinneret. In a gas or liquid at about 30-250 ° C. for about 2.5
The monofilament is made by stretching to about 6 times and, if desired, heat setting under relaxation or tension.
Further processing can be performed by twisting with other filaments, as well as use in itself.

Furthermore, the present invention is also directed to imparting a hollow structure to a monofilament during the melt spinning. Here, a buoyancy can be given to the fishing line by having a hollow structure. By adjusting the content of the metal or / and the size of the hollow, etc.,
The balance between gravity and buoyancy of the line can be set arbitrarily, and as a result, the sedimentation speed of the fishing line can be controlled. In the case of a single hole, it may be partially flat at the time of manufacture and the strength of the filament may be reduced. Therefore, it is preferable that there are two or more hollows. The use of two or more hollow structures not only prevents a decrease in strength but also tends to increase strength. The number of hollows can be appropriately set to, for example, two, three, four, five, six, seven, eight, or nine.

The production of a monofilament having a hollow structure is performed by using a melt spinning apparatus provided with a spinneret for hollow fibers capable of supplying a thermoplastic resin containing a metal to an extruder and forming a desired number of hollows. Spinning temperature about 2
Melt spin at about 30 to 270 ° C. The spun yarn is cooled, applied with a non-aqueous oil agent, stretched appropriately by a hot roller, and wound up. The obtained metal-containing monofilament can be used as a fishing line of the present invention as it is, or as a twisted yarn obtained by twisting two or more yarns or a combined yarn.

The monofilament, twisted yarn or braided yarn according to the present invention may be used as a core yarn and the surface thereof may be separately coated with a resin. By coating with a resin as described above, there is an advantage that, in the case of a tapered fishing line as described below, the degree of taper can be controlled, and particularly a sharp taper can be provided. High-density polyethylene, polypropylene, ethylene vinyl acetate copolymer,
Polyamide resins such as nylon and copolymerized nylon, acrylic resins or copolymerized modified products thereof, polyurethane resins, polystyrene resins, epoxy resins, and the like can be used. It is also possible to use a resin containing the above-mentioned metal for the resin for coating used here,
A fishing line coated with a resin containing a metal is also a preferred embodiment of the present invention. As for the applied metal, those described above are preferably used.

As a method for coating the coating resin, a method known per se such as pressure extrusion coating can be employed. Especially, the method by the pipe-type extrusion coating is suitable. Pipe-type extrusion coating extrudes the coating resin melted from an extrusion molding machine and presses the coating resin onto a pre-heated metal-containing monofilament, or a twisted yarn obtained by twisting two or more yarns or a combined yarn. The film is brought into close contact under the circumstances, and the adhesion of the film is extremely excellent.

Therefore, the coated fishing line according to the present invention depends on whether the core yarn contains metal, whether the core yarn has a hollow structure, and whether the coating resin contains metal.
The following embodiments are mentioned. (A) A monofilament containing a metal or a twisted or braided yarn composed of the monofilament (hereinafter, referred to as “a monofilament containing a metal” in this section)
A fishing line coated with a metal-free resin, (b) a fishing line coated with a metal-containing resin, and (c) a monofilament containing a metal having a hollow structure, and a metal-free resin. Fishing line coated with (d)
Fishing line in which a metal-containing monofilament having a hollow structure is coated with a metal-containing resin, (e) a metal-free monofilament or a twisted or braided yarn composed of the monofilament (hereinafter referred to as “metal-free monofilament or the like” ] Is coated with a resin containing a metal, and (f) a fishing line obtained by coating a metal-free monofilament having a hollow structure with a resin containing a metal.

It is an object of the present invention to form a tapered shape when forming a metal-containing monofilament irrespective of having a hollow structure or when coating with a coating resin. As a method for forming the shape, a method known per se may be used. For example, the number of rotations of a metering pump (gear pump) incorporated in the extruder is arbitrarily increased or decreased to change the discharge amount of the resin. By controlling the duration of the number of revolutions under the conditions described above, the tapered shape is obtained by coating with a tapered metal-containing monofilament or coating resin having the respective lengths in the target thick part, detail and taper part. The fishing line of the present invention provided with is made. The shape of the tapered portion can be changed depending on the length of switching time of the metering pump from high-speed rotation to low-speed rotation or from low-speed rotation to high-speed rotation.

The fishing line according to the present invention is characterized by having a specific gravity of about 0.97 to 7.5 in any of the above-mentioned embodiments. The specific gravity can be easily calculated from the fineness measured according to JIS L1013: 1999 and the diameter of the yarn measured using a dial gauge known per se such as a dial gauge G made by PACOCK.

[0019]

EXAMPLES The present invention will now be described in detail with reference to examples, but the invention is not affected by these examples. [Example 1] Nylon 6/66 (manufactured by Ube Industries, Ltd.)
Monofilament using a high specific gravity nylon resin (MCTS00004 chip manufactured by Kanebo Gosen Co., Ltd., specific gravity = 1.5) containing a metal (tungsten, specific gravity 19.3) in a 5033 chip, specific gravity = 1.14 under the following conditions: Was manufactured. That is, the above high specific gravity resin chip is
0mmφ extruder, melted at 270 ° C, spun from spinneret with 2.1mm hole diameter,
Cooled in an aqueous solution of ° C. Subsequently, the stretched yarn was added to 95
After stretching in two steps 5.5 times with wet heat at 220 ° C and dry heat at 220 ° C,
By performing a relaxation heat treatment at 25 ° C. by 0.98 times, a monofilament having a diameter of 0.515 mm was obtained.

Example 2 Nylon 6/66 (Novamid 2030 chip manufactured by Mitsubishi Kasei Corporation, specific gravity = 1.
14) High-density nylon resin containing metal (tungsten, specific gravity = 19.3) (manufactured by Kanebo Gosen Co., Ltd.)
Using a CTS00005 chip, specific gravity = 3), a 0.515 mm monofilament was obtained under the same conditions as in Example 1.

Example 3 Nylon 6/6 as a main component
6 (Novamid 2030J chip manufactured by Mitsubishi Kasei Corporation, specific gravity = 1.14) and a high specific gravity nylon resin (MCTS00005 chip manufactured by Kanebo Gosen Co., Ltd., specific gravity) containing a metal (tungsten, specific gravity = 19.3) as an auxiliary component = 3) to produce a monofilament under the following conditions. That is, the above two types of chips are divided into 50 /
Blend at a weight percentage of 50
It was supplied to an mφ extruder, melted at 270 ° C., spun out from a spinneret having a hole diameter of 2.1 mm, and further cooled in an aqueous solution at 10 ° C. Subsequently, the drawn yarn is stretched 5.5 times with 95 ° C wet heat and 220 ° C dry heat in two stages, and then subjected to a relaxation heat treatment at 225 ° C 0.98 times to have a diameter of 0.515 mm.
mm monofilament was obtained.

Comparative Example Nylon 6/66 (Novamid 2030J chip manufactured by Mitsubishi Chemical Corporation, specific gravity = 1.1)
Using 0), a monofilament was produced under the following conditions. The above copolymerized nylon chip was supplied to a 4.0 mmφ extruder, melted at 270 ° C., and had a pore size of 2.1 m.
m, and then cooled in a 10 ° C. aqueous solution. Subsequently, the drawn yarn was heated at 95 ° C moist heat and 220 ° C.
After stretching the film twice at 5.5 times with dry heat, it is 0.98 at 225 ° C.
By performing a relaxation heat treatment twice, a monofilament having a diameter of 0.515 mm was obtained.

Table 1 shows the results of evaluating the characteristics of each monofilament thus obtained as a fishing line according to the following criteria. Strength, elongation: After leaving a 25 cm sample in a room for 24 hours, it was set on an autograph (AG-1 type) manufactured by Shimadzu Corporation, and the tensile strength (kg) at cutting when pulled at a pulling speed of 30 cm / min and The elongation (%) was measured. Nodule strength; measured according to JIS L1013: 1999. Specific gravity: The specific gravity was calculated from the fineness measured according to JIS L1013: 1999 and the diameter of the yarn measured using a dial gauge G manufactured by PACOCK.

[0024]

[Table 1] As is apparent from the table, the fishing line of the present invention has a higher specific gravity than the specific gravity of the nylon monofilament and can be arbitrarily designed, and has a level of strength that is not particularly problematic in actual fishing.

[0025]

According to the present invention, it is possible to obtain a fishing line having a higher specific gravity than a conventional fishing line. in this way,
By increasing the specific gravity of the fishing line, it is possible to sink a light device deeply, and even with a light device, there is an advantage that it is less likely to receive water resistance such as tides and the device can be stopped at the desired water depth. . Further, according to the present invention, it is possible to produce a fishing line having an arbitrary specific gravity without being limited to the specific gravity of the material of the fishing line. This also has the advantage that the angler can select the specific gravity of the fishing line according to changes in weather, tide, and the like.

Since the fishing line provided by the present invention contains metal, a fishing line having the same specific gravity can be made thinner than a conventional fishing line. Therefore, it is less susceptible to wind during use. In particular, in the fly line, since the conventional one weighed out by making the fishing line thicker to some extent, a thin fly line such as the fishing line according to the present invention was easy to cast, and the fly was accurately placed far away. It is very useful because it can be skipped. Furthermore, if tungsten is used as the metal, the amount of metal to be contained in order to give weight to the fishing line may be small,
The strength inherent in the material constituting the fishing line is not easily reduced, and therefore, the strength of the fishing line can be improved.
Further, the fishing line according to the present invention is more excellent in abrasion resistance than the fishing line covered with foamed polyvinyl chloride.

In the fishing line according to the present invention, the specific gravity can be increased by including metal, and buoyancy can be imparted to the fishing line by adopting a hollow structure having two or more hollows. By having such contradictory properties, the balance between gravity and buoyancy of the fishing line can be arbitrarily set, and as a result, there is an advantage that the sedimentation speed of the fishing line can be controlled.

Claims (8)

[Claims] 1. A fishing line comprising a monofilament made of a resin containing a metal. 2. The fishing line according to claim 1, wherein the monofilament has a hollow structure having two or more hollows. 3. The fishing line according to claim 1, wherein the line according to claim 2 is used as a core yarn, which is further covered with a resin. 4. The fishing line according to claim 3, wherein the resin contains a metal. 5. A fishing line wherein a core yarn having a hollow structure having two or more hollows is coated with a resin containing a metal. 6. The fishing line according to claim 1, wherein the fishing line is tapered. 7. The fishing line according to claim 1, wherein the metal is tungsten. 8. The fishing line according to claim 1, wherein the specific gravity is 0.97 to 7.5.