JPS6343495B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to knots of a three-strand knotless mesh.

For knotless nets, regardless of the number of strands in the net legs, penetrating knots are generally used. The reason for this is that the knot size is small and when used as a fishing net, the running water resistance can be kept low, the weight of the net can be reduced, the strand strength can be effectively used in the straight direction, and the mesh spreads uniformly in all directions. This is because it has the following advantages. However, because the knots are penetrating, the tightening of the knots is loose, and therefore they tend to shift easily, and the broken and untwisted strands tend to come out of the knots. In order to prevent a decrease in net leg strength due to a decrease in twist, the rougher the twist pitch of the first twist, the easier the knots will come off. On the other hand, if the twist pitch of the top twist is tightened to prevent knitting knots from slipping, the balance with the bottom twist will be lost, and the top twist will prevail too much, causing the fabric to twist. In addition, if the upper and lower twists are strengthened as a whole, the net fabric becomes hard, making it difficult to handle and causing damage to fish bodies. Also, excessively increasing the number of ply twists is not preferable in terms of productivity. Therefore, in the production of knotless nets, it is desirable to reduce the number of ply twists as much as possible while taking into consideration the strength, anti-friction properties, torsion of the net due to twisting, flexibility, the size of knots, etc. For this reason, a joint structure with little misalignment is required.

Therefore, in this invention, one of the three strands constituting one net leg in a three-strand knotless net
The book and one of the three strands that make up the other net leg form a half-turn hook so that they hang on each other, and this is placed in the center of the knot and the surrounding area is surrounded by the rest of both legs. It was developed with the aim of providing a three-strand knotless net knitting system in which two strands of each strand are intersected in a grid pattern to reduce the number of twists and knots are less prone to slipping. .

Next, an embodiment of the knotted knot of the three-stranded knotless net according to the present invention will be described based on the drawings. FIG. This is a diagram showing the loosened state, and one of the three strands 1, 2, and 3 that make up one net leg A of the three-strand knotless net is one of the three strands 2 that makes up the other net leg B. Strand 5 crosses the upper side of 4 out of 4, 5, and 6, and strand 5 crosses the lower side of strand 1. After that, strand 2 hooks strand 5 and makes a half turn each other to change the direction of travel. Strand 2 crosses the lower side of strand 3, and strand 5 crosses the upper side of strand 6. The strands 1 and 3 of one net leg A and the strands 4 and 6 of the other net leg B pass through and intersect with each other in a parallel grid shape. That is, strand 1 is above strand 4 constituting the other party's net leg B, and strand 6
The strand 3 passes under the strand 4 and the upper side of the strand 6, which constitute the other net leg B, respectively, and the strand 1,
3, 4, and 6 pass through and intersect as a whole in a cross-shaped pattern. Because of this knot structure, the knots do not easily come off, and even if the net legs are cut and the strands come apart, the knots will not come apart easily.
Since the strands 2 and 5 of the book are hooked to each other, the strands are difficult to pull out from the knot. FIG. 2 is a front view of the joint shown in FIG. 1 tightened, and the dimensions of the joint are not much different from those of the through type.

In the above description, the net legs are twisted in the S direction, but the same applies to the twisting in the Z direction. That is, FIG. 3 is a diagram showing a state in which the knotless net having the net legs twisted in the Z direction is loosened, and FIG. 4 is a front view of the knotless net in FIG. 3 in a state in which the knots are tightened.

As mentioned above, according to the knotted knot of the three-strand knotless net according to the present invention, the knotted structure is difficult to shift and the strands do not easily come off, so there is no need to forcibly strengthen the first twist, and therefore, it is easy to manufacture. It has many advantages, such as increasing the productivity of the netting machine, eliminating the need for resin processing to prevent knots from slipping, and making it possible to supply a highly flexible and strong net fabric.

[Brief explanation of the drawing]

Figure 1 is a front view showing a state in which the joints in Figure 1 are loosened, Figure 2 is a front view showing the joints in Figure 1 in a tightened state, and Figures 3 and 4 show other examples. 3 is a front view showing a state in which the joints shown in FIG. 3 are loosened, and FIG. 4 is a front view showing a state in which the joints in FIG. 3 are tightened. 1, 2, 3... Strand of net leg A, 4, 5,
6...Strand of net leg B, 7...Hooking part of strand, C...Knitting knot.

Claims (1)

[Claims] 1. In a three-strand knotless net, one of the three strands making up one net leg and one of the three strands making up the other net leg were turned half a turn so as to hook each other. A set of three-strand knotless net, characterized in that a hook part is formed, and the hook part is placed at the center of the knit knot, and the remaining strands on both sides are braided by penetrating and crossing each other in a grid pattern. section.