JPS61224920A - 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 gillnets for salmon and trout are made using fishing net thread made of nylon or polypropylene filaments, but in certain countries, gillnets made of In some cases, there are restrictions on the fishing net line that can be used.

In other words, in Alaska fishing grounds, salmon,
The fishing net line that makes up gillnets for trout has been designed to have 30 or more filaments to limit the amount of fish caught.

3 by mixing multifilament and monofilament
As a technical means for making driftnets and gillnets using fishing net thread (twine) made of zero or more filaments, as described in U.S. Patent No. 4,466,331, a plurality of monofilaments and multifilaments are twisted. Twine for fishing nets is made by twisting the combined strands together, and a core made by twisting multiple multifilaments 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 fishing net twine of the above-mentioned technical means, many uneven surfaces are formed on the surface of the twisted yarn, which causes diffuse reflection of light and reduces transparency in the water, and when the fishing net is knitted, the knots may shift. There are downsides to this, such as a lack of eye-metal stability and a decrease in net placement rate.

[Purpose of the invention]

The present invention has been made in view of the above points, and has a structure that reduces diffused reflection of light and has an undulating surface. When a fishing net is formed, it improves transparency in the water, prevents nodules from shifting, and improves mesh stability. An object of the present invention is to provide a twine for fishing nets, a net fabric, and a gill net that can increase the quality of fishing nets.

[Summary of the invention]

The twine for fishing nets of the present invention includes a strand consisting of a single twisted monofilament and a twisted strand consisting of one or more aligned multifilaments twisted together in the opposite direction to the twist added to the monofilament. It is made by twisting it together.

The net fabric of the present invention consists of a strand consisting of one twisted monofilament and a twisted strand consisting of one or more aligned multifilaments twisted in the opposite direction to the twisting of the monofilament. It is made by using twine for fishing nets twisted together to form knots at predetermined intervals.

The gill net of the present invention consists of a strand made of twisted monofilament and a twisted strand made of one or more aligned multifilaments twisted in the opposite direction to the twist added to the monofilament. It is made by installing ropes and floats on one end of the net fabric using twine for fishing nets to form knots at predetermined intervals, and providing lobes and sinkers on the other end. ing.

[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. 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.
．． Strand 4 is made by applying SM twisting to a single nylon monofilament of 485 strands (equivalent to 1896 denier) at a rate of about 100 times/m, and 210 denier multifilament 5 made of 34 nylon filaments is twisted. S by adding the single twisted strand 6 you made to the monofilament! ! It is made by twisting 7 strands in opposite directions. The number of twists in the zM twist mentioned above corresponds to the number of twists in the SM twist added to the monofilament. As a result, the twist of the S+ land 4 is canceled out and becomes almost zero.

That is, the fishing net twine 1 is formed by winding a twisted strand 6 with a small diameter around a strand 4 with a large diameter. In order to improve the characteristics of the fishing net, it is preferable for the strands constituting the fishing net twine to have a diameter of 0.2 txm or more for monofilament and 0.1 m or less for each multifilament filament constituting the twisted strand. has been experimentally determined.

In the fishing net twine 1, when the twisted strand 6 is dyed in the same color as the strand 4 and in a dark color, a single monofilament with excellent transparency can be seen through when placed in water as a fishing net, resulting in a dark multifilament. is noticeable, and the optical illusion that the twine diameter appears thinner than the actual twine diameter improves the net placement rate.

FIG. 4 shows another embodiment of the present invention, in which the twists 1 to lands 10 are made by twisting two multifilaments 11, 12 together.

That is, the twisted strand 10 is made by twisting together a 210 denier pre-twisted nylon multifilament 11 made up of 15 filaments and a 210 denier pre-twisted nylon multifilament 12 made up of 15 filaments. It is preferable that the multifilaments 11 and 12 have the same diameter, but if necessary, two or more types of multifilaments having different diameters may be twisted together as a single filament.

In FIG. 2, the direction in which the strand 4 and the twisted strand 6 are twisted is 7 twists in the opposite direction since the strand 4 has an S twist, but if the strand 4 has 7 twists, the direction in which they are twisted is an S twist.

Similarly, in FIG. 4, the twist direction of the twisted strand 10 may be either the same direction as the pre-twisted direction of the multifilament 11 and the multifilament 12 or the opposite direction. The twisting direction of the twisted strands 10 may be either the same twisting direction as the twisting direction of the twisted strand 10 or the opposite twisting direction. However, the direction in which the strands 4 and the twisted strands 10 are twisted is opposite to the direction in which the strands 4 are twisted.

FIG. 6 shows a schematic diagram of a gillnet made according to the present invention, in which a loaf 13 is fixed along one end side of a net fabric 2 made of twine 1 for fishing nets, and a loaf 13 is fixed along the longitudinal direction of the loaf 113. At the same time, floats 14, 14, .
17.

〔Effect of the invention〕

As described above, according to the present invention, the intersecting parts of the strands are reduced due to the twisting of the strands, which reduces diffused reflection of light, improves the transparency of the twine, and makes it easier to see when making the net fabric. Good sex. Also, the net fabric made from this material has twisted strands made of multifilament.

Since it has an anti-slip effect, the nodule part does not shift and the eyelid stability is improved.

Furthermore, this net fabric is used to make a finished product, and the woven net for phantom fish is preferable because 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 of the twisted strand in 81 colors compared to the monofilament of the strand, the apparent diameter appears to be thinner than the actual diameter, resulting in the effect of further improving the mesh placement rate.

[Brief explanation of the drawing]

FIG. 1 is a partial plan view of a fishing net using the twine for fishing net according to the present invention, FIG. 2 is a partial side view of the twine for fishing net according to the present invention, FIG. 3 is a sectional view of the same, and FIG. FIG. 5 is a sectional view of the same, and FIG. 6 is a schematic diagram of a finished gill net. 1... Twine for fishing net, 2... Net fabric, 4... Strand, 6... Twisted strand, 13... O-bu,
14... Float, 16... Robe, 17... Shenzi. Applicant's agent Tsukehiro Inomata Figure 1 Figure 5

Claims (1)

[Claims] 1. A strand consisting of one twisted monofilament and a twisted strand consisting of one or more aligned multifilaments twisted in the opposite direction to the twist applied to the monofilament. Twine for fishing nets made by twisting strands together. 2. The twine for fishing nets according to claim 1, characterized in that the multifilament constituting the twisted strand is a strand formed by twisting one or more filaments together. 3. The twine for fishing nets according to claim 1 or 2, characterized in that the twisted strands are dyed a darker color than the monofilament strands. 4. A net fabric made using the twine for fishing nets described in 1 to 3 above so as to form knots at predetermined intervals. 5. A gillnet made into a completed product by using the net material described in 4 above and attaching floats and ropes, or floats, sinkers and ropes.