JP2554847B2 - Trunk line for longline - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a longline trunk used for fishing large fish such as tuna.

[0002]

2. Description of the Related Art As a longline trunk line which has been conventionally used for fishing a large fish such as a tuna, a synthetic fiber, for example, a bundle of a large number of nylon yarns or polyester yarns is twisted into three strands. It is known that

However, the trunk rope for long line made by triple twist has a peculiar peculiarity to the twisted yarn, that is, a peculiar twist, and it is easy for kink to enter during the work, and the long line is entangled. There was a problem that the operability was poor because the operation of inserting the main rope and the winding operation could not be performed smoothly. In addition, as mentioned above, when making a longline trunk by twisting three strands using nylon or polyester threads, it must be made quite thick in order to have strength, and it becomes bulky when loaded on a ship, There was a problem that it could not be loaded.

In order to solve this problem, 8 to 12 monofilaments made of synthetic resin are used to make a longline trunk rope, or 8 to 12 bundles of multifilaments made of synthetic resin are used. A longline trunk line made of a string has been proposed, but a longline trunk line made of the monofilament is too hard, and a long line made of the multifilament bundle is made. On the contrary, there was a problem that the trunk rope became too soft.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve such problems, and an object of the present invention is to provide a trunk line for a long line, which has an appropriate hardness and is excellent in workability and so-called thread separation. To do.

[0006]

In order to solve this problem, the trunk line for a long line of the present invention comprises a core yarn composed of one to several monofilaments made of a synthetic resin and surrounds the core yarn. The gist of the present invention is that a plurality of yarns wrapping the above with a multifilament made of a synthetic resin is used for braiding. Further, the trunk line for a long line of the present invention comprises a core yarn composed of one to several monofilaments made of synthetic resin, and a plurality of yarns formed by wrapping the core yarn with a multifilament made of synthetic resin. The gist of the present invention is to be braided by using a plurality of yarns of only a multifilament made of synthetic resin.

The present invention will be described in detail below. The monofilament constituting the core yarn is made of polyester,
A single yarn fineness of 1500 to 3000 denier is suitable when used with one yarn, and a single yarn fineness of 600 to 1000 denier is suitable when used with three yarns. Also,
The multifilament that wraps the core yarn is also made of polyester, and 800 to 1300 filaments having a single yarn fineness of 5 to 15 denier are used for a total of 4000 to 13
Adjust to 000 denier. In this way, 8 to 12 yarns wrapping around the core yarn with a multifilament were used to make a string having an outer diameter of about 5 mm, and a longline trunk rope having a tensile strength of about 500 kg was obtained. .

The trunk rope obtained is shown in FIG. 1 in a cross-sectional view, wherein 1 is a core yarn made of one monofilament, and 2 is a multifilament enclosing the core yarn 1. Then, twelve yarns 3 formed by wrapping the core yarn 1 in the multifilament 2 are used for braiding to produce a trunk line for a long line.

By the way, a yarn obtained by wrapping a monofilament constituting the core yarn with a multifilament,
It is also possible to combine a plurality of yarns of only a multifilament made of polyester. In this case, in the case of the eight braids, four braces are used, and in the case of the twelve braids, six braces are used. Further, in the case of a multi-filament yarn made of polyester, the single yarn fineness is 5
Using 800 to 1300 filaments of ˜15 denier, the total is adjusted to 4000 to 13,000 denier.

The trunk rope obtained is shown in FIG. 2 in a cross-sectional view, 4 is a yarn in which a core yarn 5 made of one monofilament is wrapped with a multifilament 6, and 7 is a yarn made of only a multifilament. Each thread 4 and 7 6
The main ropes for long lines are made by making a string using each book.

[0011]

Embodiments of the present invention will be described below. Example 1 A single 1600 denier monofilament made of polyester was used as a core thread, and 12 threads made of a polyester (1000 denier / 96f) × 7 multifilaments were wrapped around the core thread. , The trunk line for long line was produced. Example 2 One 1600 denier monofilament made of polyester was used as the core yarn, and six yarns were used which were surrounded by polyester (1000 denier / 96f) × 7 multifilaments, and (100
6 denier / 96 f) × 8 multifilament yarns were used to make a string, and a trunk line for long lines was produced. Comparative Example 1 Twelve yarns made of 7800 denier monofilament made of nylon were used to make a string, and a trunk line for long lines was produced. Comparative Example 2 Made of polyester (1000 denier / 96f) ×
Twelve yarns consisting of only 8 multifilaments were used for stringing to prepare a trunk line for long lines.

Table 1 shows the flexibility of trunk ropes for long lines, which are produced according to Examples 1 and 2 and Comparative Examples 1 and 2.

[0013]

[Table 1]

The flexibility was evaluated by the following test method. That is, as shown in FIG. 3, one end of the test piece 8 is fixed, and a force is applied to the other end from the upper side, and the stress (g) when the moving interval of the other end of the test piece 8 reaches 3 cm is measured. It was measured by an autograph tester manufactured by Shimadzu Corporation and evaluated by the numerical value.

From Table 1, it can be seen that the longline trunks produced in Examples 1 and 2 are neither too hard nor too soft as compared to the longline trunks produced in Comparative Examples 1 and 2, and are in a suitable degree. It has excellent hardness.

[0016]

As described above, according to the present invention, it is possible to provide a trunk line for a long line, which has an appropriate hardness and is excellent in workability, so-called thread separation.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a trunk rope according to a first example of the present invention.

FIG. 2 is a sectional view of a trunk rope according to a second example of the present invention.

FIG. 3 is an explanatory diagram showing a flexibility evaluation method.

[Explanation of symbols]

 1 core yarn 2 multifilament 3 yarn 4 yarn 5 core yarn 6 multifilament 7 yarn

Claims (2)

(57) [Claims] 1. A core yarn is composed of one to several monofilaments made of a synthetic resin, and a plurality of yarns are wrapped around the core yarn with a multifilament made of a synthetic resin to be braided. A trunk line for long lines, which is characterized by 2. A core yarn is composed of one to several monofilaments made of synthetic resin, and a plurality of yarns are wrapped around the core yarn with a multifilament made of synthetic resin, and a synthetic resin. A trunk line for a long line, which is made by using a plurality of yarns of only multifilament.