JPH09121710A - Rope for shell culture and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rope for a shell culture capable of growing the shells well. SOLUTION: The characteristic of this rope for a shell culture is to arrange loops along the periphery of a braided rope 1 so as to form a spiral intermittently in a continuous direction (a) of the braided rope 1 by each of the loops 2 to 6 of the braided rope 1 in a knitted and braided-shape having loops. In the braided rope 1 having loops 2 to 6 and produced by drawing twisted yarn as a loop-shape at a prescribed interval while being knitted and braided to the braided rope, at least one twisted yarn among plural twisted yarns composing the braided rope 1, is constituted by using a different quality material in its water content and the braided rope 1 after knitting and braiding is heat-treated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aquaculture rope used for aquaculture of scallops and a method for producing the aquaculture rope.

[0002]

2. Description of the Related Art Conventionally, in the cultivation of shellfish such as scallops, a hole is formed in the ear of the shellfish to be cultured by a drill or the like, and a locking tool is inserted into the hole to lock the shellfish. The so-called ear-hanging aquaculture, in which the locking tool is inserted into a culture rope to fix the shellfish so that it is suspended in the sea in this state, has been performed. Therefore, as a locking tool or locking method used for this ear suspension culture, Japanese Patent Publication No. 3-57
As disclosed in Japanese Patent Publication No. 726 or Japanese Patent Publication No. 3-58694, a wire that uses a linear locking device or a fibrous body and penetrates a hole provided in a shell ear and a culture rope. There is one in which a free end of a strip-shaped locking device or a part of a filamentous body is pressed to form a rolled bulge portion, and the rolled bulge portion locks the juvenile shell. On the other hand, in the ear suspension device, drilling a hole in the ear of the shellfish, inserting a locking tool into the aquaculture rope, and inserting the tip of the locking tool into the drill hole. Japanese Patent Laid-Open No. 6-153737 “Ear suspension device for cultured shellfish” configured to mechanically process
was there.

[0003]

However, the technique of the locking device, the locking method, or the ear suspension device disclosed in each of the above publications makes the ear suspension work of juveniles quick or easy. It was not intended to improve the developmental condition of shellfish, but for the purpose of being able to perform it or for enabling mechanical treatment thereof.
In other words, by improving the efficiency of lifting the juveniles, the time required for aquaculture operators to suspend the juveniles can be shortened, thus reducing the burden on the operator. In addition to this, it is possible to increase the number of juveniles that can be hooked in the same time, so it is possible to increase the absolute quantity rather than the reliable growth. There was no change in the growth of shellfish and it was not an efficient growth of juveniles. This is because the juveniles that have been efficiently suspended by the ear are very close to each other, so when they are installed in seawater, many tides hit the shellfish located in front of the tide and the plankton to be used as food. Was not able to supply each shellfish evenly.

The present invention has been made in view of the above points, and an object of the present invention is to provide a culture rope capable of improving the growth of shellfish and a method for producing the same.

[0005]

In order to achieve such an object, the present invention is such that each loop of a braided rope having a loop forms a spiral intermittently in the continuous direction of the braided rope. The gist is a rope for cultivating shellfish that is characterized in that a loop is arranged around the braid rope.

Further, according to the present invention, in a braid rope having a loop which is manufactured by pulling out a thread in a loop shape at a predetermined interval while being braided into the braid rope, at least one of a plurality of threads constituting the braid rope is provided. By constructing a book with a material that has a different water content from other yarns and immersing the braided rope after braiding in water, each loop formed a spiral that intermittently continued in the continuous direction of the braided rope. The gist is a method for producing a characteristic shellfish rope.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, as shown in FIG. 1, a plurality of loops 2 to 6 are provided in the braid rope 1, and the loops 2 to 6 are arranged at equal intervals in the continuous direction a of the braid rope 1. The braid rope 1 is provided intermittently with a constant angle in the circumferential direction, and is arranged so as to form a spiral in a continuous direction a of the braid rope 1. And the space | interval of the braid rope 1 with respect to the continuous direction a between each loop 2-6 is maintained at 20 centimeters, and also with respect to the circumferential direction of the braid rope 1, 1/5 rotation (= 72 degrees). Each is adjusted to be different. Therefore, the loops 2 to 6 are spaced from each other by five, and the braid rope 1 makes one round, and the length in the continuous direction a at this time is exactly 1 meter. That is, the next loop that moves from the first loop 2 in the continuous direction a of the braid rope 1 and is in the same direction is the sixth loop (not shown), and by the sixth loop, The position is 1 meter away from the first loop 2, and the two loops in this state do not overlap.
The loops 2 to 6 are all uniform in size, and in the present embodiment, they are about 6 times as large as the braid rope 1. Each loop 2, 3, 4 provided on the braid rope 1 as described above
2 is knitted in the braid of the braid rope 1, and is one of a plurality of threads constituting the braid rope 1 or one selected at random. When the book is braided, the book is pulled out from the portion forming the braid rope 1 and separated from the portion to be braided to form a loop. As described above, since the loops 2 to 6 (FIG. 1) are not provided by being inserted into the braid rope 1, there is no risk of damaging the braid rope 1 itself, and moreover, since the loops are incorporated in the braid rope 1. Of course, the loops 2 to 6 do not fall out, and even if the loops 2 to 6 are pulled in a direction away from the braid rope 1, the tensile stress can be endured.

A usage mode of the braid rope having the above loop will be described. First, as shown in FIG.
The guts 10 are inserted through the loops 4, 5, and 6 provided on the braid rope 1. At this time, each loop 4, 5, 6
In between, scallops 14 and 15 having holes 23 and 24 formed in ears 21 and 22 are prepared. Then, when the tegus 10 is sequentially inserted into the loops 4, 5, 6, ..., The tegus 10 is passed through the holes 23, 24 of the scallops 14, 15 in the gaps between the loops 4, 5, 6. In this way, by passing the Tex 10 according to the loops 4, 5, 6, ... Which form the spiral intermittently, the Tex 10 forms a continuous spiral, and as a result, The scallops 14, 15 ... Arranged between the loops 4, 5, 6 ... Can be suspended so as to form an intermittent spiral.

In this way, the scallops 14, 15 ...
The entire braided rope 1 provided so as not to be detached is installed in seawater so that the continuous direction a is vertical. And, as described above, each loop 2, 3, 4 ...
Since a sufficient distance and angle are maintained between the
, The scallops 12, 13, ... Are provided between the loops 2, 3, 4, ... This means that the scallops 12 and 13 do not vertically overlap each other when they are separated by about 1 meter in the vertical direction. In other words, the direction of the tide in seawater is generally horizontal, but it is fully predictable that it will be oblique, vertical, or vertical, and depending on the direction of tide, Each scallop 12, 13, ...
・ It is possible to prevent the tide from hitting the ground from changing greatly from place to place. Therefore, since the tide flows in a substantially uniform state, a good and uniform growth state can be obtained.

Next, the manufacturing method will be described. In order to form a loop on the surface of the braid rope so as to form an intermittent spiral as described above, a yarn withdrawing device is arranged at a desired position around the braiding machine of the braid rope, and the rope of the braid rope is manufactured. By pulling out the thread one by one at the time of the string,
A spiral loop can be formed during the braiding process of the braided rope. In addition to the above, the loops are configured in the same direction at the braiding stage, but with different moisture contents.
By constructing a braid rope with different types of threads and immersing the entire braid rope in water, the thread with a high moisture content contracts, and this thread pulls in the direction in which the braid rope is installed, and this pulling force pulls the braid rope. By twisting, loops in the same direction can be made into an intermittent spiral. As described above, when a yarn having a high moisture content contracts, a yarn having a high moisture content must be knitted in a spiral shape in order to form a spiral shape that interrupts a loop, A braid produced by an ordinary braiding machine is braided so that each yarn is incorporated in a spiral direction. For example, the loops 2, 3 and 4 shown in FIG. 2 are braided so that the surface of the braid rope 1 is spirally incorporated. As a combination of threads for forming a spiral loop by utilizing the water content as described above, one-third of threads made of plastic fibers such as polypropylene are polyamide-based synthetic polymer fibers, for example, 6- It may be a nylon thread. In this case, the official moisture content of polypropylene fiber is 0%, whereas the official moisture content of 6-nylon fiber is 4.5%, and the moisture content of 6-nylon fiber is higher. When this is done, the 6-nylon fibers allow the braid rope to be twisted.

It is well known that yarns having different water contents have different shrinkage ratios when heated, and almost the same result can be obtained even when heat treatment is applied instead of immersion in water. Is easy to understand. Further, in the above-described embodiment, only a few loops or scallops are shown in the drawings for convenience of description, but there are many loops provided on the braid rope and at the same time, it is naturally suspended. There are many scallops installed, and the braided rope and texels are long and continuous. And
Since a plurality of braid ropes like this are similarly installed in seawater, the description is omitted because it is not different from the conventional one.

[0012]

Embodiments It is needless to say that various embodiments can be taken within the scope not departing from the gist of the present invention in addition to the description in the above embodiment. For example, as shown in FIG. 5, one of the loops 104 and 105 that is drawn out from the braided rope 101 is cut, and the scallop 1
Holes 12 drilled in ears 121, 122 of 14, 115
It is also possible to hang the scallops 114 and 115 by inserting the threads forming the loops 104 and 105 into 3,124 and connecting the cut portions to form a loop again. Similarly, a scallop 116 is hung on the loop 106 and sequentially repeated, thereby
The scallops 114, 115, 116, ... Can be installed in a state faithful to the intermittent spiral formed by 105, 106 ,.

Further, as shown in FIG. 6, the braid rope 20
1, loops 202, 203, 204, 20
5, 206, 207 ... are braid ropes 20
It is adjusted so as to differ by 2/5 rotations (= 144 °) in the circumferential direction of 1. Therefore, each scallop 212,213,
Of 214, 215, 216 ... Braid rope 20
The ones closest to each other in the continuous direction a are largely separated in the circumferential direction, and the tide flow can be made more uniform in the seawater. At this time as well, the loop having the same direction as the first loop 202 is the sixth loop 207, and the distance from the first loop 202 to the sixth loop 207 is adjusted to be 1 meter. Has been done.

[0014]

As described above, according to the present invention, each loop of the braided rope having loops forms a loop on the outer circumference of the braided rope so that a spiral is intermittently formed in the continuous direction of the braided rope. Since the main point is a rope for cultivating shellfish, which is characterized in that it is provided with holes for hanging in the ear of the shellfish in advance, so that each loop is inserted while sequentially inserting the tex. The shellfish to be cultivated in seawater by piercing the hole of the shellfish with tegu, or by suspending the shellfish in each of the loops forming the intermittent spiral. It can be installed while forming. Therefore, it is possible to apply the tidal current to the entire shellfish in the seawater almost uniformly, so that the supply of plankton, which is the bait for the shellfish, and the dissolution of the seawater around the shellfish are dissolved. The state of oxygen can be made uniform to the whole shellfish, and thus the growth of shellfish to be cultivated can be promoted evenly.

On the other hand, the present invention relates to a braid rope having a loop which is manufactured by pulling out a yarn in a loop shape at a predetermined interval while being braided into the braid rope, and at least one of a plurality of yarns constituting the braid rope. By constructing a book with a material that has a different water content from other yarns and immersing the braided rope after braiding in water, each loop formed a spiral that intermittently continued in the continuous direction of the braided rope. Since the gist is the method for producing a characteristic rope for aquaculture of shellfish, it is possible to make the loop on the braid rope spiral by utilizing the difference in shrinkage rate when immersed in water due to the difference in moisture content. it can. That is, if it is immersed in water, the yarn with a high moisture content pulls in the braid direction of the braid, and this pull becomes a torsional stress on the entire braid, and the entire braid rope is twisted in the spiral direction. First, a braided rope formed by braiding ropes in the same direction can form an intermittent spiral by twisting after being dipped in water. Thus, it is possible to provide the loop of the braid rope in a spiral manner by a method that is not a mechanical means. Then, by calculating the contraction rate when immersed in water based on the difference in water content, it is possible to provide a loop formed with a spiral with a certain degree of accuracy on the braid rope. That is, it is possible to adjust the torsional stress for the entire braid by adjusting the ratio of the threads having different moisture contents to the whole yarns constituting the braid rope and the degree of the difference in the moisture contents. Since the spiral state of the loop changes depending on the degree, the predetermined spiral state can be realized by setting the condition that can be calculated in advance.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a rope for cultivating scallops.

FIG. 2 is an enlarged view showing a state of a braid rope and a loop.

FIG. 3 is a state diagram when a scallop is hung by inserting a gut through a loop.

FIG. 4 is a state diagram when a scallop is suspended in a spiral shape.

FIG. 5 is an explanatory diagram showing another embodiment.

FIG. 6 is a state diagram when a scallop is suspended in another spiral shape.

[Explanation of symbols]

 1 Braid rope 2,3,4,5,6,7 loop 10 Tegusu 12,13,14,15,16 Scallop 21,22 Scallop ear 23,24 hole a Continuous direction of braid rope

Claims (2)

[Claims] 1. A shellfish characterized in that a loop is arranged on the outer circumference of the braid rope so that a spiral is intermittently formed in the continuous direction of the braid rope by each loop of the braided rope having the loop. Aquaculture rope. 2. A braid rope having a loop which is braided into a braid rope and which is produced by pulling out a thread at a predetermined interval into a loop shape, wherein at least one of the plurality of threads constituting the braid rope is Shell made of a material having a different water content from that of the braid, and by immersing the braided rope after braiding in water, each loop forms a spiral that is intermittent in the continuous direction of the braided rope. Method for manufacturing aquaculture rope.