JP2000324968A - Net for cultivating seaweed such as laver and nemacystus decipiens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a net for cultivating seaweeds such as laver and Nemacystus decipiens to the longitudinal edge of which ropes are attached and which enables the length of connecting parts of the ropes to be tied to pillars to optionally be adjusted. SOLUTION: This net for cultivating laver or the like is provided with a laver-cultivating main net 1, string-like knit fabrics 4 attached to the longitudinal edges of the main net 1 and ropes 2 inserted in the knit fabrics 4 along the length of the fabrics 4. The ropes 2 are each preferably a cord made of three to four strands in a twisted and unified state. The string-like knit fabric preferably is formed with two chain-stitch yarns 11a, 11b and with two inserting yarns 12a, 12b tying the yarns 11a, 11b at an optional interval. The rope 2 is sandwiched between two inserting yarns 12a, 12b and the rope 2 is inserted in the knit fabrics 4 along the length of the fabrics 4. The main net 1 is preferably a Raschel net. The length of connecting parts 3 of the ropes 2 can optionally be adjusted by hauling in the fabrics 4 toward the center of the net and is easy to be tied to pillars.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cultivation net used for cultivating seaweeds such as laver and mozuku on a seaweed cultivation site and the like in a cultivation site for seaweeds such as laver and mozuku. For convenience of explanation, a net for cultivating seaweeds such as laver and mozuku is hereinafter referred to as a "laver net".

[0002]

2. Description of the Related Art In recent years, laver has been produced by cultivating laver with spores of laver adhered to a laver net, and picking the laver with a work boat or the like. Cultivation of spores attached to laver nets is generally performed in the sea as follows. In other words, the four corners of the laver net are connected to a pillar that stands vertically in the sea, and the laver net is stretched in parallel with the sea surface. Therefore, as shown in FIG. 1, the laver net is composed of a laver net main body 1 and a rope 2 attached to a longitudinal edge of the laver net. The rope 2 has a connecting portion 3 slightly extended from a corner of the laver net main body 1, and is connected to a support using the connecting portion 3. Note that the rope 2 is attached to the laver net main body 1 by sewing both of them with a thread or the like.

[0003] However, in such a laver net, the length of the connecting portion 3 becomes a problem. That is, the connecting portion 3
If the length is too short, the knot may not be easily tied to the support or the knot may be loosened. Further, if the length of the connecting portion 3 is too long, the surplus portion may be caught on the work boat when picking the laver.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention is to provide an apparatus in which the rope is attached to the laver net body so that the length of the connecting portion of the rope can be adjusted arbitrarily. is there.

[0005]

That is, the present invention relates to a laver net body, a string-shaped knitted fabric provided at a longitudinal edge of the laver net body, and a rope inserted into the string-shaped knitted fabric. The present invention relates to a laver net characterized by comprising:

As the laver net body used in the present invention, any conventionally known netting can be used.
In the present invention, it is particularly preferable to use a Russell network.
The Russell net is formed by a chain knitting yarn 11 and an insertion yarn 12 inserted into the chain knitting yarn 11, as shown in FIG.
A knot is formed at a portion where the insertion yarn 12 is inserted into the two chain knitting yarns 11. In the case of laver net, chain knitting yarn 1
As the yarns constituting the insertion yarn 1 and the insertion yarn 12, any conventionally known yarns can be used arbitrarily. In particular, monofilaments having a relatively large denier or deniers of a single filament are relatively large and the number of filaments is relatively large. It is better to use less multifilaments. Specifically, a monofilament or a single filament preferably has a denier of about 10 to 1000, and a multifilament has a number of about 2 to 200 filaments. The material of the filament is polyethylene, polyvinyl alcohol,
Polyamide, polyester and the like are used.

[0007] A string-shaped knitted fabric 4 is provided on the longitudinal edge of the laver net main body 1.
Is provided. The string-shaped knitted fabric 4 may have any shape or structure, but must have at least a shape or structure in which a rope can be inserted. For example, a string-shaped knitted fabric 4 knitted in a tubular shape can be used because a rope can be inserted into the hollow of the tube. Also,
The one obtained by joining the lengths of two knitted fabrics with a joining yarn can be used because a rope can be inserted between the two knitted fabrics.

[0008] In the present invention, it is particularly preferable that the cord-like knitted fabric is formed of at least two chain knitting yarns and an insertion yarn connecting the two chain knitting yarns at an arbitrary interval. . Then, the rope is preferably inserted into the cord-shaped knitted fabric by the rope being sandwiched between at least two insertion yarns. A preferred example of such a knitted fabric will be described with reference to FIG. The cord-shaped knitted fabric 4 includes two chain knitting yarns 11a and 11b knitted by warp knitting. Each of the two chain knitting yarns 11a and 11b has an insertion yarn 1
2a and 12b are inserted. This insertion thread 12a, 1
2b connects the chain knitting yarns 11a and 11b at an arbitrary interval. Specifically, the insertion yarn 12a inserted into the chain knitting yarn 11a is changed from insertion of the chain knitting yarn 11a to insertion of the chain knitting yarn 11b in an arbitrary course. Thread 12b inserted in
Is changed from insertion of the chain knitting yarn 11b to insertion of the chain knitting yarn 11a. Therefore, in this course, the insertion yarn 1
2a and 12b intersect, and the insertion yarns 12a and 1b
2b, the rope 2 is sandwiched, and the rope 2 is inserted into the string-shaped knitted fabric 4.

In the example shown in FIG. 3, two chain knitting yarns 11a, 11
b and two insertion yarns 12a and 12b inserted into each of the chain knitting yarns 11a and 11b, but the number of chain knitting yarns may be three or more. In this case, the rope 2 is inserted between any of the plurality of chain knitting yarns. Similarly, three or more insertion yarns may be used. Chain knitting yarns 11a, 11b and insertion yarns 12a, 12b constituting the cord-shaped knitted fabric 4
Although any conventionally known yarn can be adopted as the yarn, the same monofilament or multifilament as in the case of the Russell net suitably used as the laver net main body 1 is preferably used. However, in general, it is preferable that the string-shaped knitted fabric 4 has higher strength than the laver net main body 1 and reinforces the laver net. Therefore, it is preferable to use a thicker thread than the laver net main body 1. Optimal. Specifically, two or more, preferably 2 to 5, yarns knitting the laver net body 1
It is preferable to use a plying yarn or a ply-twisted yarn after the main drawing.

As is apparent from the above description, the knitting structure shown in FIG. 3 is a modification of the Russell knitting. Therefore, if the Russell net is used as the nori net body, the knitting is performed with the chain knitting yarn 11a (or 12b), and if the knot is tied using the insertion yarn, the nori net body and the string-like knitted fabric are not sewn, and the nori is used. One in which the net body and the string-shaped knitted fabric are integrated can be created at once. Of course, when the Russell net is not used as the nori net body, the nori net body and the string-shaped knitted fabric may be sewn to be integrated. Further, even when a Russell net is used as the laver net main body, if the Russell knit is not used as the cord-shaped knitted fabric, the laver knitted main body and the cord-shaped knitted fabric may be sewn and integrated.

As the rope 2 to be inserted into the string-shaped knitted fabric 4, any conventionally known rope can be used. In particular, a rope is preferably used in the present invention. A rope is formed by twisting three or four strands composed of a plurality of yarns. Such a rope has intense irregularities due to the twist of the strands on the surface. Therefore, the coefficient of friction with the cord-like knitted fabric 4 is high, and the inserted rope is difficult to move, which is preferable.

[0012]

The laver net as described above is inserted into the laver net main body 1, the string-shaped knitted fabric 4 provided on the longitudinal end of the laver net main body 1, and the string-shaped knitted fabric 4, as shown in FIG. Rope 2. Therefore, when it is desired to provide the connecting portion 3 to the rope 2, the connecting portion 3 having an arbitrary length is obtained by approaching the string-shaped knitted fabric 4 in the center direction (the direction indicated by the arrow in FIG. 4). be able to.

Further, if a rope is used as a rope, the surface of the rope will have severe irregularities, the friction with the string-shaped knitted fabric approaching in the center direction of the laver net will be large, and the string-shaped knitted fabric which is approached will not easily return to its original state. . Further, the string-shaped knitted fabric is formed of at least two chain knitting yarns and an insertion yarn that connects the two chain knitting yarns at an arbitrary interval, and the rope is sandwiched between at least two insertion yarns, When the rope is inserted into the string-shaped knitted fabric, the rope is present in the knitting structure, and is tightly sandwiched by the insertion yarn. Therefore, also in this case, the friction between the rope and the string-shaped knitted fabric is large, and the string-shaped knitted fabric that has approached is difficult to return to its original state.
This effect becomes even more pronounced.

[0014]

According to the laver net according to the present invention, when the end of the rope attached to the longitudinal edge of the laver net is tied to the support, the main body of the nori net is moved toward the center to be connected to the support. The necessary length of the connecting portion can be secured. In particular, if a rope is used as a rope, or if a string-shaped knitted fabric is used as a specific structure, it is difficult for the laver net body that has approached to return to its original state. Therefore, it is less likely to be hardly tied to the support, and it is also less likely that the connecting portion of the rope is too much and this is caught on the work boat. Therefore, when the laver net according to the present invention is used, there is an effect that troubles can be reduced and the production of laver can be rationalized during the operation of cultivating and picking the laver.

Although the description of the present invention has been made mainly on the cultivation of nori, the nori net (aquaculture net) according to the present invention has been described.
Is suitable for other seaweeds such as mozuku.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a conventional laver net.

FIG. 2 is a plan view showing a part of a Russell net used for a laver net main body.

FIG. 3 is a plan view showing a state where a rope is inserted into a knitting structure according to an example of a cord-shaped knitted fabric used in the present invention.

FIG. 4 is a perspective view showing a laver net according to an example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nori net main body 2 Rope 3 Rope connection part 4 String-like knitted fabric 11, 11a, 11b Chain knitting yarn 12, 12a, 12b Insertion yarn

Claims (4)

[Claims] An aquaculture net body, a string-shaped knitted fabric provided at a longitudinal edge of the aquaculture net body, and a rope inserted into the string-shaped knitted fabric. Culture net for seaweeds such as laver and mozuku. 2. The cultivation net for seaweeds such as laver and mozuku according to claim 1, wherein the rope is formed of a rope. 3. A string knitted fabric having at least two chain knitting yarns,
An insertion yarn that connects the two chain knitting yarns at an arbitrary interval is formed, and that the rope is inserted into the cord-like knitted fabric by the rope being sandwiched between at least two insertion yarns. A net for cultivating seaweeds such as laver and mozuku according to claim 1 or 2. 4. The cultivation net for seaweeds such as laver and mozuku according to any one of claims 1 to 3, wherein the cultivation net body is constituted by a Russell net.