JPS61199738A - Twine and net cloth for fishing net and gill net - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to, for example, a gill net for salmon and trout, a net fabric used for this gill net, and a twine for fishing nets used for this net fabric.

[Technical background of the invention and its problems]

It is known that gill nets for salmon and trout are made using fishing net line made of nylon yarn propylene filaments, but in certain countries there are restrictions on the fishing net line that makes up gill nets. There are cases.

In other words, in Alaska fishing grounds, salmon,
The fishing net line constituting the trout gillnet is made of 30 or more filaments to limit the catch layer.

3 by mixing multifilament and monofilament
As a technical means for making fishing nets and gillnets using fishing net thread (twine) made of zero or more filaments, as described in U.S. Pat. Twine for fishing nets made of twisted strands, and a core made of multiple multifilaments twisted in the opposite direction as described in U.S. Patent No. 3,329,061. Fishing net yarn is known, which is made by combining monofilament with twisted side yarns and twisting them in the same direction as the core.

[Problems with background technology]

However, in the twine for fishing nets of the above technical means, only the multifilaments are subjected to F-twisting, so many uneven surfaces are formed on the surface of the twisted yarn, leading to diffuse reflection of light and reducing transparency in the water, and also when knitting fishing nets. In this case, the knots tend to shift, resulting in a lack of eye-metal stability and a reduction in the net placement rate.

[Purpose of the invention]

The present invention has been made in view of the above points, and it reduces diffused reflection of light to improve transparency in water, reduces the difference in elongation between multifilament and monofilament, increases cutting strength, and reduces nodules. To provide a twine for fishing nets, a net cloth, and a gill net which can prevent slippage and improve the stability of the mesh.

[Summary of the invention]

The twine for fishing nets of the present invention includes one or more monofilament strands, one multifilament untwisted strand, and a plurality of untwisted strands. It is made by twisting together twisted strands of monofilament.

The net fabric of the present invention includes one or more strands made of one monofilament, one or more untwisted strands made of one multifilament, and a plurality of monofilaments. It is made by using twisted strands which are twisted together, and twine for fishing nets which are twisted together to form knots at predetermined intervals.

The gill net of the present invention includes one or more strands made of one monofilament, one or more untwisted strands made of one multifilament, and a plurality of monofilaments. Floats, ropes, floats, sinkers, and It is made by attaching a rope.

[Embodiments of the invention]

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

FIG. 1 shows a part of a net fabric 2 made using fishing net twines 1 according to the present invention, and each fishing net twine 1, 1, . The knotted portions 3 are formed by placing the cloth to form a net fabric.

The fishing net twine 1 has a diameter of 0 as shown in FIG.
．． In addition to 404 strands made of 204 denier nylon monofilament (equivalent to 335 denier), one of the untwisted strands 5 made of 210 denier nylon multifilament made of 24 filaments are arranged together. It is made by twisting together two strands 8 of nylon monofilament 7 with a diameter of 0.204io+ (equivalent to 335 denier).

In other words, the above-mentioned twin wire for fishing nets is not constructed by heating only the multifilament alone, but instead the untwisted multifilament is arranged in parallel with the untwisted strand 4 made of monofilament with a large diameter, so that the twisting causes diffuse reflection of light. can be kept low.

The nylon multifilament of the above-mentioned non-twisted strand 5 has a twisting rate of about 15 per meter during spinning.
This includes cases where the number of twists is about 10 times.

In the fishing net twine 1, when the multifilament of the non-twisted strand 5 is dyed in the same color and dark color as the monofilament of the strand 4 and the monofilament 7 of the strand 8, it has excellent transparency when installed underwater as a fishing net. The dark-colored multifilament stands out through a single monofilament, and the optical illusion that the twine diameter appears thinner than the actual twine diameter improves the mesh coverage.

In the above embodiments, it is preferable that the monofilaments or multifilaments constituting the strands have the same diameter, but if necessary, each single filament may have two or more types of monofilaments or multifilaments with different diameters. Of course, twisted strands may also be used.

Furthermore, it goes without saying that the strand 4 made of monofilament may be pre-twisted on the right or left or not, but the direction in which the strand 4, the untwisted strand 5 and the twisted strand 8 are twisted is may be the same or opposite to the twisting direction of the twisted strands 8.

FIG. 4 shows a schematic diagram of a gillnet made according to the present invention, in which a loaf 9 is fixed along one end side of a net fabric 2 made of twine 1 for fishing nets, and a loaf 9 is fixed along the longitudinal direction of the rope 9. Attach floats 10, 10... to the rope 12 at predetermined intervals, and connect the ropes 12 to the other end of the net 2 with connectors 11, ml... 0-712. .13
It is configured by providing...

(Effects of the Invention) As described above, according to the present invention, since the untwisted strand 5 made of multifilaments is configured to be parallel to the untwisted strand made of monofilament 4, diffused reflection of light is also reduced. In addition, the mesh fabric made from this material has a surface undulation change due to the twisted strands 8 that prevents slippage, so the knots do not shift and the mesh stability is improved. Get better.

Furthermore, the finished gill net made using this net fabric is preferably a woven net for the target fish, as it has excellent transparency. In addition, since the knots are hard to shift and the mesh is stable, fish caught in the mesh are less likely to fall off, improving fishing efficiency.

Furthermore, by dyeing the multifilament in a darker color than the monofilament, the apparent diameter appears to be thinner than the actual diameter, which has the effect of further improving the screen placement ratio.

[Brief explanation of drawings]

Fig. 1 is a partial plan view of a fishing net using the fishing net twine according to the present invention, Fig. 2 is a partial side view of the fishing net twine according to the present invention, Fig. 3 is a cross-sectional view of the same, and Fig. 4 is a finished product. It is a schematic diagram of a gill net. 1... Twine for fishing nets, 2... Net fabric, 4... Strand of monofilament, 5... Non-twisted strand of multifilament, 8... Twisted strand consisting of monofilament. Applicant's agent: Inomata Seijuku Yuzu To2 Procedures Manual March 1985

Claims (1)

[Claims] 1. One or more untwisted strands made of one multifilament in addition to one or more strands made of one monofilament, and Twine for fishing nets made by twisting monofilament strands together. 2. The twine for fishing nets according to claim 1, characterized in that the multifilament is dyed a darker color than the monofilament. 3. A net fabric made using the twine for fishing nets described in 1 to 2 above so as to form knots at predetermined intervals. 4. Build floats, ropes, etc. using the net fabric mentioned in 3 above.
Or gill nets with floats, sinkers, and ropes attached.