JP3838402B2 - Fishery braid - Google Patents

Description

【００４１】
【表２】

【００４２】
上記の表２に示された摩耗試験成績による評価の基準については、摩耗後の引張強さの数値の高いものが優れているとし、引張強さが略同一のものは伸び率の高いものの方が優れているとし、引張強さ及び伸び率が略同一のものは保持率の高いものの方が優れているとした。
【００４３】
そのような評価基準によれば、表２の摩耗試験成績から見て、網糸のストランドである組紐材の各ヤーンが無撚のもの（NO.1，NO.2) は、摩耗後の引張強さにおいて、網糸のストランドである組紐材の各ヤーンに撚りが入っているその他のもの（NO.3 以降の全ての試料）と比較して劣っているものと判断できる。
【００４４】
また、片撚りを入れたもの（下撚りを入れることなくフィラメントの糸束を全て同じ方向に撚ったもの）の試料同士を比較して見ると、NO.3とNO.5の比較（普通目同士の比較）では、NO.5の方が摩耗後の引張強さにおいて優れており、また、NO.4とNO.6の比較（追打ち同士の比較）では、NO.6の方が摩耗後の引張強さにおいて優れている。
【００４５】
また、下撚りと上撚りを入れたものの試料同士を比較して見ると、NO.7とNO.9の比較（普通目同士の比較）では、NO.9の方が摩耗後の引張強さにおいて優れており、また、NO.8とNO.10 の比較（追打ち同士の比較）では、NO.10 の方が摩耗後の引張強さにおいて優れている。
【００４６】
以上のようなことから、本発明の組紐材同士を２子撚りした網糸については、単に無撚のヤーンを編組した組紐材同士を２子撚りした網糸と比べて摩耗後の引張強さ（耐摩耗性）が優れているというだけではなく、右方向に組まれるヤーンを左撚り（或いは右撚りに下撚りしてから左撚りに上撚り）とし、左方向に組まれるヤーンを右撚り（或いは左撚りに下撚りしてから右撚りに上撚り）とした組紐材同士を２子撚りしたような従来の網糸と比べても、摩耗後の引張強さ（耐摩耗性）において優れていることが判る。
【００４７】
ところで、上記のような摩耗試験は、組紐材を２子撚りした網糸同士について比較したものであるが、更に、組紐材自体と、該組紐材を２子撚りして網糸としたものとの耐摩耗性の比較について、同様の摩耗試験を行なった。
【００４８】
組紐材自体についての各試料（NO.11 〜NO.14)におけるストランドの撚り方向と撚り回数、および、該組紐材を２子撚りして網糸としたものも各試料（NO.15 〜NO.18)については以下の表３の通りである。
【００４９】
表３に示したような組紐材自体の各試料（NO.11 〜NO.14)と２子撚りした網糸の各試料（NO.15 〜NO.18)について摩耗試験を行なった結果については以下の表４の通りである。（なお、この摩耗試験では、試験方法，網糸の各仕様，および評価基準等について、試験方法で摩耗回数を５０００回としている点を除けば、既に述べた網糸の摩耗試験の場合と同様なものである。）
【００５０】
【表３】

【００５１】
【表４】

【００５２】
表４の摩耗試験成績から見ると、組紐材自体については、各試料（NO.11 〜NO.14)の間で摩耗後の引張強さに大きな差異は認められないが、それらの組紐材を２子撚りした網糸の各試料（NO.15 〜NO.18)では、明確な差異が認められ、NO.15 とNO.17 の比較（普通目同士の比較）では、NO.17 （全て左撚りのヤーンからなる組紐材同士を右撚りに２子撚りした網糸）の方がNO.15 （右撚りのヤーンと左撚りのヤーンからなる組紐材同士を右撚りに２子撚りした網糸）よりも摩耗後の引張強さにおいて優れている。
【００５３】
また、NO.16 とNO.18 の比較（追打ち同士の比較）でも、NO.18 （全て左撚りのヤーンからなる組紐材同士を右撚りに２子撚りした網糸）の方がNO.16 （右撚りのヤーンと左撚りのヤーンからなる組紐材同士を右撚りに２子撚りした網糸）よりも摩耗後の引張強さにおいて優れている。
【００５４】
以上のことから、右撚りのヤーンと左撚りのヤーンを交互に組み合わせたような組紐材同士を２子撚りしたような従来の網糸と比べて、本発明の組紐材同士を２子撚りした網糸の方が耐摩耗性において優れているという理由は、以下のようなことと考えられる。
【００５５】
すなわち、組紐材だけで考えると、右（Ｓ）方向に組まれるヤーンを左（Ｚ）撚りとし、左（Ｚ）方向に組まれるヤーンを右（Ｓ）撚りとして、右撚りのヤーンと左撚りのヤーンを交互に組み合わせたような従来の組紐材は、組紐材自体としては撚りのバランスがとれた構造となっている。
【００５６】
しかしながら、そのような組紐材同士を更に右撚りの２子撚りとして網糸とした場合、右撚りのヤーンには更に撚りが入るのに対して、左撚りのヤーンでは撚りが弛んで浮き上がる状態となることから、網糸のストランドとしては撚りバランスが崩れてしまい、その結果、網糸の表面（各組紐材の表面）に不規則な凹凸が生じることで、網糸の耐摩擦性が低下することとなる。
【００５７】
これに対して、全て左撚りのヤーンからなる組紐材同士を右撚りに２子撚りした網糸では、組紐材自体としての撚りバランスという点では従来のものと比べて若干劣るかもしれないが、組紐材同士を撚り合わせて網糸としても、網糸のストランドとして撚りバランスが崩れるようなことがなく、結果的には、網糸全体の撚りバランスが良好に保たれて、網糸としての耐摩擦性が優れたものとなっていると考えられる。
【００５８】
以上、本発明の漁業用組紐材の各実施形態について説明したが、本発明は、上記のような実施形態にのみ限られるものではなく、適宜設計変更可能なものであることはいうまでもない。
【００５９】
すなわち、例えば、２子撚りの無結節網では通常は網糸のストランドを右（Ｓ）撚りとしていることから、上記の実施形態では、組紐材の全てのヤーンを左（Ｚ）撚りとして、組紐材同士を右（Ｓ）撚りとしているが、ストランド（組紐材）同士が左（Ｚ）撚りとされる場合には、組紐材の各ヤーンを全て右（Ｓ）撚りとして実施することとなる。
【００６０】
また、上記の実施形態に示したような２子撚りの無結節網の網糸に限らず、有結節網の網糸に対しても適用可能なものであり、組紐材同士の撚り合わせについても、２子撚りに限らず３子撚りなどとして実施することも可能である。
【００６１】
また、既に述べたように、組紐材の中空軸芯部に埋設される芯材についても、上記の実施形態に示したような構造の沈子索に限らず、その他の構造の沈子索や、沈子索以外の芯材（各種高強力繊維の芯材等）を使用することで実施することも可能であり、例えば、ポリエチレンの発泡糸等を芯材としたり、或いは、図１（Ｂ）に示したような構造において錘片６の代わりに発泡ポリエチレン又は発泡スチロール等の浮体を設けたりしたものをストランドとして、そのようなストランドを２子撚り又は３子撚りとすることで実施することも可能である。
【００６２】
また、組紐材を編組するときに右方向に組まれるヤーンと左方向に組まれるヤーンとで、同じ撚り方向でもその撚りの回数（撚りの強さ）を変えるようにすることで、組紐材同士を撚り合わせた網糸の撚りバランスを更に向上させるようにすることも可能である。
【００６３】
【発明の効果】
以上説明したような本発明の漁業用組紐材によれば、それから製造される網糸の撚りバランスを良好なものとして耐摩擦性を向上させることができると共に、材料の点数を減らして製造工程を単純化することで生産コストを下げることができ、また、製造工程での材料の取り違えにより起きる過失を回避して不良品の発生を防止することができる。
【図面の簡単な説明】
【図１】本発明の漁業用組紐材の一つの用途である２子撚り無結節網について、（Ａ）無結節網の一部分における網糸を示す平面図、および（Ｂ）網糸を構成するためのストランドとなる組紐材を示す部分断面平面図。
【図２】本発明の漁業用組紐材の各実施形態のそれぞれ（Ａ），（Ｂ）を示す部分断面平面図。
【図３】漁業用組紐材の従来例のそれぞれ（Ａ）〜（Ｃ）を示す部分断面平面図。
【符号の説明】
１ 網糸
２ 組紐材（ストランド）
３ ヤーン
４ 芯材（沈子索）
５ （沈子索の）芯糸
６ （沈子索の）錘片[0001]
BACKGROUND OF THE INVENTION
The present invention relates to braided materials for fisheries to be used as strands when forming the yams for fishing nets.
[0002]
[Prior art]
For fishing nets and ropes (trunk ropes), nets and ropes are used to make nets and ropes made of lightweight synthetic fibers such as polyester and nylon suitable for use in water. It has been conventionally practiced to embed a metal weight having a large specific gravity, such as lead, in the hollow shaft core portion of the braid as a strand for forming the core. The braided material in which is embedded is made into nets and ropes for fishing by twisting a plurality of strands as strands.
[0003]
As described above, braided materials used as strands with core material in nets for fishing nets, ropes for fishing, etc. are generally braided with yarns of untwisted yarn bundles. With braided material with a core made of a non-twisted yarn, the braided yarn braided with twisted yarn is also used for the yarn because the mesh yarn and rope produced as a material (strand) are inferior in friction resistance. Conventionally used as a material (strand) for ropes.
[0004]
[Problems to be solved by the invention]
By the way, about the conventional braid for fishery as described above, in the braid with a core made of braided untwisted yarn, as already mentioned, the friction resistance of the net yarn and rope formed by twisting them together On the other hand, as a result of examination, it has been found that the braided material with the core material braided by the twisted yarn has the following problems.
[0005]
That is, when braided yarns are braided to form braided materials, conventionally, yarns knitted in the right (S) direction when braiding braids are left (Z) twisted and left (Z) direction The yarn knitted to the right (S) is twisted so that the right and left twisted yarns are alternately combined so that the right and left twisted balances cancel each other. In this way, a balanced structure was achieved as a braid material.
[0006]
As for braids for forming nets and ropes for fishery, there are “ordinary eyes” that combine each yarn alternately one by one, and “follow-up” that combines two yarns alternately and arrange them alternately. Although used, in any type of braided material, conventionally, the yarn knitted in the right direction is left-twisted and the yarn knitted in the left direction is right-twisted.
[0007]
However, for the conventional braided material in which the right twisted yarn and the left twisted yarn are alternately combined, although the twist balance of itself is taken, for example, in order to produce a knotless net using this, When two braided materials are right-twisted (usually right-twisted for a knotless net), each braided material that is right-twisted as two strands as a strand is further twisted into the right-twisted yarn. The left-handed yarn is twisted to the right, and the twist is slightly loosened and floats.
[0008]
For this reason, in the twisted mesh yarn, the balance of the twist of each yarn in each braided material that becomes a strand is lost, and as a result, the surface of each braided material that constitutes the net yarn is not good. When regular irregularities appear, the net yarn is easily worn when rubbed, and the friction resistance as the net yarn is slightly lowered.
[0009]
Furthermore, it apart, when manufacturing yams for fishing, and requires the material (strands) become that of the right twist as yarn for forming the braid material and that of the Z twist is that such problems As a result, the production process of the yarn becomes complicated and the production cost increases, and at the stage of manufacturing the braid material from each yarn, the right twist yarn and the left twist yarn are mixed and braided. In such a case, there is a possibility that such a fault may occur, and a problem that a serious product is supported due to generation of defective products due to such fault may occur.
[0010]
The present invention has an object to eliminate the above problem, specifically, the braid material used as the yams for fishing, then the abrasion resistance of the yams to be produced It is an object of the present invention to improve the manufacturing process and reduce the production cost by simplifying the manufacturing process, and to prevent the occurrence of defective products by avoiding the error that occurs in the manufacturing process.
[0011]
[Means for Solving the Problems]
The present invention, in order to solve the above problems, a braid material with embedded core material into the hollow axis portion, the yams for fishing by combining a plurality of twisting the braid material as a strand In the braided material for forming, all the yarns for braiding the braided material have a twist in a direction opposite to the twisting direction when forming the net yarn using the braided material as a strand. To do.
[0012]
In addition, about the twist of each yarn in said braided cord material, not only what twisted the untwisted yarn bundle in the same direction (single twist) and made it into the yarn, but also twisted the yarn bundle twisted together further. Such yarns are also included, and in such cases, the direction of the upper twist is the twist direction of the yarn.
[0013]
According to the braided material as described above, it may be slightly inferior in terms of the twist balance as the braided material itself, compared to the braided material in which the right twisted yarn and the left twisted yarn are alternately combined. When the braided material to be twisted is used as a net yarn, the balance of the twist of each yarn in each braided material is not disrupted, and as a result, the balance of the twist of each yarn in each braided material is It is possible to improve the friction resistance when mesh yarn is maintained.
[0014]
In addition, according to the braided material as described above, it is not necessary to manufacture a right-twisted yarn and a left-twisted yarn in the process of manufacturing each yarn that is a constituent element of the braided material, and a unidirectional twisted yarn. Manufacturing process can be simplified and the production cost can be reduced, and in the process of braiding braided material from each yarn, right-twisted yarn and left-twisted yarn are Mistaken mistakes can be completely avoided, and the occurrence of defective products due to such mistakes can be prevented.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a braid for fishery according to the present invention will be described with reference to the drawings.
[0016]
FIG. 1 shows an example of a usage pattern of a braid for fishery according to the present invention. FIG. 1 (A) shows a knotless net using a net yarn in which a braid is twisted in two pairs. B) shows a braided material (one of two braided materials that are twisted into a braid) to be a strand for constituting a knot of a knotless net.
[0017]
The knotless net 1 is a twin-twisted net with two strands twisted to the right (S), and the knotless net has a conventional twist structure and is shown in the figure. The crossing part of the mesh yarns is connected to each other by the “penetration type”, but the connecting structure of the crossing parts of the mesh yarns has been generally used in the past such as the “staggered type” and the “turtle type”. Any suitable structure known in (1) is possible.
[0018]
The braided material 2 that becomes the strand of the net yarn 1 has a core material 4 embedded in a hollow shaft core portion of a braid braided by each yarn 3, and each yarn 3 covering the core material 4. In the illustrated knitting structure, the two yarns 3 are arranged in a “follow-up” that is alternately combined and assembled, but the yarns are knitted into “ordinary eyes” that are alternately combined one by one. Is also possible.
[0019]
The core material 4 embedded in the hollow shaft core portion of the braided material 2 is a sink cord for making the net yarn 1 have a specific gravity suitable for use in water. A single core yarn 5 made of fiber and a large number of weight pieces (lead or lead alloy) 6 fixed around the core yarn 5 are formed, and each weight piece 6 has a flat cross-sectional shape. It is formed to be a thing.
[0020]
About the core material 4, it is not restricted to the sink cord of the above structures, It is also possible to implement by using the thing of the appropriate structure conventionally known as a core material, Since the sacrificial cord as illustrated as the material 4 is effective particularly when used for the mesh thread, the specific contents thereof will be described in detail below.
[0021]
The core yarn 5 is a flat monofilament yarn made of a synthetic fiber such as polypropylene and having a flat cross section (for example, a thickness of 0.2 mm and a width of 1.0 mm), and has a predetermined interval. The plurality of weight pieces 6 fixed to the core yarn 5 are caulked to the core yarn 5 so that their flat surfaces are substantially the same surface.
[0022]
The flatness of the weight piece 6 is not particularly limited to a certain value, but in order to clarify the difference from the one having a cross section close to a circle, the thickness t and the width w of the weight piece 6 are used. T / w ≦ 2/3.
[0023]
As for the weight piece 6, the illustrated weight piece is fixed by caulking and fixing the weight of one strip-like body to the core thread so as to extend along the longitudinal direction of the core yarn, and dividing the weight of this strip-like body at a predetermined interval. Each weight piece 6 can be cut into the surface at predetermined intervals along the longitudinal direction of the weight of the belt-like body without completely dividing the weight of the belt-like body into a plurality of weight pieces 6. By providing a stamped groove, when the braided material 2 having such a weight embedded therein is bent, the weight of the belt-like body may be cut at the portion of the stamped groove to become the weight piece 6.
[0024]
According to the above-described structure of the sword rope, it is possible to achieve a high specific gravity with a low volume as compared with the sword line coated with a synthetic resin, and the constrained property of the sword rope by the braid (embracing) (Adhesiveness) can be made good, and flexibility and flexibility can be sufficiently secured, and when braided nets in which the cords are embedded are twisted together, While maintaining flexibility, it is possible to obtain an excellent sedimentation property that suppresses the swollen network due to tidal currents.
[0025]
Further, since the weight piece 6 of the scuttle cord is flat, compared to the case where the cross-sectional shape of the weight piece 6 is substantially circular, two braid members in which the scuttle cords are embedded are twisted together. When knitting a knot net, the maximum diameter of the net yarn can be reduced, so that the resistance of the net under water flow can be reduced, and the net of the net due to tidal currents can be further reduced. Can be suppressed.
[0026]
Further, since the core yarn 5 of the sacrificial cord is flat, the weight (the weight of the belt-like body for forming each weight piece 6) is compared with the case where the cross-sectional shape of the core yarn is substantially circular. When caulking to the core yarn, the weight and the core yarn are not displaced, and the weight can be caulked to the core yarn in a uniform state in the longitudinal direction of the core yarn.
[0027]
In addition, since the core yarn 5 of the sacrificial cord is not twisted, the weight is separated into a plurality of weight pieces in order to give sufficient flexibility in the longitudinal direction, or the flexibility is given in the longitudinal direction. Therefore, each of the weight pieces (each of the separated weight pieces or the weight cut at the portion of the cut groove) may be No twisting or untwisting of the core yarn occurs in the portion between the portions), and the flat surface of the weight can be maintained in the same plane in the longitudinal direction of the sanitary cord.
[0028]
As a result, when embedding the sword cord in the braid, the sword cord is rubbed against the guide by irregular protrusions and irregularities due to irregularity of the flat surface of each weight piece in the longitudinal direction. Since the weight piece is not peeled off from the core yarn by the guide that guides the wire, and irregular irregularities do not appear on the surface of the braid in which the sacrificial cord is embedded, the braided cord in which the sacrificial cord is embedded When the materials are twisted together and knitted, there is no possibility of irregular irregularities in the longitudinal direction on the surface of the mesh.
[0029]
2A and 2B show the embodiments of the present invention, and FIGS. 3A to 3C show the present invention for the braid material 2 used as a strand for the knot 1 of the knotless net. A comparative example (conventional example) is shown by enlarging the braid portion covering the core material.
[0030]
In the braid material 2 of the embodiment (first embodiment) shown in FIG. 2 (A), the yarns 3 each composed of a bundle of many filaments of synthetic fibers such as polyester are assembled in the right (S) direction. Also, yarns assembled in the left (Z) direction are all twisted in the left (Z) twist, and each yarn that is all left (Z) twisted (by additional strike) They are knitted so that they can be combined alternately.
[0031]
In the braided material 2 of the embodiment (second embodiment) shown in FIG. 2B, each yarn 3 is either a yarn assembled in the right (S) direction or a yarn assembled in the left (Z) direction. , Yarn bundles that are all twisted in the right (S) twist and further twisted in the left (Z) twist, and each yarn that has been twisted in the left (Z) twist is It is knitted so as to be combined alternately (by aligning two by punching).
[0032]
On the other hand, with respect to each embodiment of the present invention as described above, in the braided material 2 shown in FIG. 3A, the yarn in which each yarn 3 is assembled in the right (S) direction is also the left (Z) direction. All the yarns to be assembled are also yarns without twisting, and such untwisted yarns are knitted so that they are alternately combined (by aligning two yarns by follow-up).
[0033]
Further, in the braid material 2 shown in FIG. 3 (B), the yarns in which each yarn 3 is assembled in the right (S) direction is the left (Z) twist, and the yarn assembled in the left (Z) direction is the right ( S) Twisted and knitted so that right-twisted yarn and left-twisted yarn are alternately combined (by two by aligning).
[0034]
Further, in the braided material 2 shown in FIG. 3 (C), the yarn in which the yarns 3 are assembled in the right (S) direction is a left (Z) twist of yarn bundles that are twisted in the right (S) twist. The yarn that is twisted in the left (Z) direction is a yarn that is twisted in the left (Z) twist and further twisted in the right (S) twist, The knitted yarn is knitted so that the yarn twisted in the upper twist and the yarn twisted in the left twist are alternately combined (by two by twisting).
[0035]
2 and FIG. 3 are both braided for additional hitting in which two yarns 3 are aligned and combined alternately, but not only braided material by such additional hitting, Although not shown, it goes without saying that each yarn can be braided in the above-described state in the same manner as in the case of additional striking, even in the case of braided material that is braided into ordinary eyes that alternately combine the yarns one by one.
[0036]
For each sample in which each of the braided materials of each of the above embodiments and each of the comparative examples (both normal and follow-up) is a twin-twisted mesh yarn, the wear resistance is as follows: Comparison was made by an abrasion test.
[0037]
Comparison test method by wear test Tensile strength, elongation JIS L-1096 compliant (Tensile speed 20 cm / min)
Wear test JIS D-4604 compliant Wear count 2000 times Load 500gf
Sample 1.2 Diameter of child twisted mesh thread 5.0mm (Right twist)
2.2 Pitch of child twisted net yarn 11 threads / 75mm
3. Specifications of strands (1) Specifications of braid Polyester multifilament 1000 denier x 2 x 16 strokes (2) Lead wire with flat lead wire 12.5g / m
(3) Braided string with normal number of eyes 11.4 stitches / inch Additional shot 5.7 stitches / inch
Table 1 below shows the twist direction and the number of twists of the strand (braided material) in each sample (NO.1 to NO.10) of the above-described net yarn.
[0039]
Table 2 below shows the results of the wear test performed on each sample (NO.1 to NO.10) of the net yarn obtained by twisting the strands (braided material) having the twist direction and the number of twists as shown in Table 1. It is as follows. (However, the numerical values of the abrasion test results were obtained by testing the same variety three times for each sample, and taking the tensile strength and elongation as the average value.)
[0040]
[Table 1]

[0041]
[Table 2]

[0042]
Regarding the criteria for evaluation based on the abrasion test results shown in Table 2 above, it is assumed that the one with a high value of tensile strength after wear is excellent, and the one with the same tensile strength is the one with high elongation. In the case where the tensile strength and elongation are substantially the same, the one having a higher retention rate is superior.
[0043]
According to such evaluation criteria, in view of the abrasion test results in Table 2, braided yarns that are braided strands (NO.1 and NO.2) It can be judged that the strength is inferior to that of other yarns (no. 3 and subsequent samples) in which each yarn of the braid material that is a strand of mesh yarn is twisted.
[0044]
In addition, when comparing the samples of one twisted (twisted all filament bundles in the same direction without adding a lower twist), comparison of NO.3 and NO.5 (ordinary) In comparison between eyes), NO.5 is superior in tensile strength after wear, and in comparison between NO.4 and NO.6 (comparison between additional hits), NO.6 is better. Excellent tensile strength after wear.
[0045]
In addition, when comparing the samples with the lower twist and the upper twist, the comparison of NO.7 and NO.9 (comparison between normal eyes) shows that NO.9 is the tensile strength after wear. In addition, in comparison between NO.8 and NO.10 (comparison between post-strokes), NO.10 is superior in tensile strength after wear.
[0046]
In view of the above, with respect to the net yarn obtained by twisting the braided materials of the present invention with each other, the tensile strength after abrasion is compared with the net yarn obtained by simply braiding the braided materials obtained by braiding untwisted yarns. (Abrasion resistance) is not only excellent, but the yarn assembled in the right direction is left-twisted (or down-twisted in the right twist and then twisted in the left-hand twist), and the yarn assembled in the left direction is right-twisted. Excellent tensile strength (wear resistance) after abrasion even compared to conventional braided yarns in which the braided material (twisted to the left twist and then the upper twist to the right twist) is twisted together. You can see that
[0047]
By the way, the abrasion test as described above is a comparison of mesh yarns obtained by twisting a braid material into two strands. Further, the braid material itself and a braid material obtained by twisting the braid material into two strands. The same abrasion test was conducted for the comparison of the wear resistance.
[0048]
For each sample (NO.11 to NO.14) of the braided material itself, the strand twist direction and the number of twists, and those obtained by twisting the braided material into two yarns to form a mesh yarn (NO.15 to NO. .18) is as shown in Table 3 below.
[0049]
Regarding the results of the wear test on the braided material samples (NO.11 to NO.14) and the twisted mesh yarn samples (NO.15 to NO.18) as shown in Table 3 It is as Table 4 below. (In this wear test, the test method, each specification of the yarn, and the evaluation criteria, etc. are the same as in the case of the yarn yarn wear test described above, except that the number of wear is 5000 in the test method. It is a thing.)
[0050]
[Table 3]

[0051]
[Table 4]

[0052]
From the abrasion test results in Table 4, there is no significant difference in the tensile strength after abrasion between the samples (NO.11 to NO.14) for the braided materials themselves. There is a clear difference between the two twisted mesh yarn samples (NO.15 to NO.18) and NO.17 (all comparisons between normal eyes) NO.17 (all No.1 5 (a net yarn made by twisting two strands of left-twisted yarns into a right-hand twist) is twisted into a right-twisted pair of braids made of right-twisted yarn and left-handed yarn It is superior in tensile strength after abrasion to (net yarn).
[0053]
In addition, NO.18 (comparison between post-strikes) of NO.16 and NO.18 is NO.18 (a net yarn made by twisting two braided yarns consisting of all left-handed yarns into a right twist). 16 (excellent tensile strength after abrasion) than net yarn obtained by twisting two braids of right-twisted yarn and left-twisted yarn together.
[0054]
From the above, the braided material of the present invention was twisted in two pairs as compared to the conventional net yarn in which the braided materials such as a combination of a right-twisted yarn and a left-twisted yarn were alternately combined. The reason that the mesh yarn is superior in abrasion resistance is considered as follows.
[0055]
That is, considering only the braided material, the yarn assembled in the right (S) direction is the left (Z) twist, the yarn assembled in the left (Z) direction is the right (S) twist, and the right twist yarn and the left twist The conventional braided material in which the yarns are alternately combined has a structure in which the twisted balance is obtained as the braided material itself.
[0056]
However, when such braided materials are further twisted into the right-twisted twin-twisted yarn, the right-twisted yarn is further twisted, whereas the left-twisted yarn is loosened and floated. As a result, the twist balance is lost as the strand of the mesh yarn, and as a result, irregular irregularities are generated on the surface of the mesh yarn (the surface of each braided material), thereby reducing the friction resistance of the mesh yarn. It will be.
[0057]
On the other hand, in the net yarn in which the braided material consisting of all left-handed yarns is twisted in two pieces to the right twist, it may be slightly inferior to the conventional one in terms of the twist balance as the braided material itself, Even if the braided material is twisted together to form a mesh yarn, the twist balance as a strand of the mesh yarn is not lost, and as a result, the twist balance of the entire mesh yarn is maintained well, and the resistance as a mesh yarn is maintained. It is considered that the friction is excellent.
[0058]
As mentioned above, although each embodiment of the braiding material for fisheries of this invention was described, it cannot be overemphasized that this invention is not restricted only to the above embodiments, and can change a design suitably. .
[0059]
That is, for example, in a two-child twisted knotless network, the strands of the mesh yarn are usually set to the right (S) twist. Therefore, in the above embodiment, all the yarns of the braided material are set to the left (Z) twist, Although the materials are right (S) twisted, when the strands (braided material) are left (Z) twisted, the yarns of the braided material are all implemented as right (S) twisted.
[0060]
Further, not limited to the yams of the knotless net of twisted second child as shown in the above embodiments, for the yams of the chromatic knot networks are those that can be applied, for the twisting between the braid member It is possible to implement not only two-twisting but also three-twisting.
[0061]
In addition, as already described, the core material embedded in the hollow shaft core portion of the braided material is not limited to the one having the structure as shown in the above embodiment, It is also possible to carry out by using a core material (such as a core material of various high-strength fibers) other than the sediment cord, for example, using polyethylene foam yarn or the like as a core material, or FIG. as a strand those or provided floating such as foamed polyethylene or styrofoam, instead of the weight piece 6 in such structure as shown in), it real Hodokosuru by the twisting such strands twisted 2 children or 3 children Is also possible.
[0062]
In addition, when braiding the braided material, it is possible to change the number of twists (twisting strength) between the yarns that are assembled in the right direction and the yarns that are assembled in the left direction. It is also possible to further improve the twist balance of the net yarn obtained by twisting together.
[0063]
【The invention's effect】
According to the braid material for fishery of the present invention as described above, the twist balance of the net yarn produced therefrom can be improved and the friction resistance can be improved, and the production process can be reduced by reducing the number of materials. Simplification can reduce the production cost, and it is possible to prevent the occurrence of defective products by avoiding the error caused by the mixing of materials in the manufacturing process.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a plan view showing a net yarn in a part of a knotless net, and (B) a net yarn, for a twin-twisted knotless net that is one application of a braided fishery material of the present invention. The fragmentary sectional top view which shows the braided material used as the strand for the purpose.
FIG. 2 is a partial cross-sectional plan view showing (A) and (B), respectively, of each embodiment of a braided material for fishery of the present invention.
FIG. 3 is a partial cross-sectional plan view showing (A) to (C) of a conventional example of a braid for fishing.
[Explanation of symbols]
1 Net yarn 2 Braid material (Strand)
3 Yarn 4 Core material (sink cord)
5 Core thread 6

Claims (4)

A braid material with embedded core material into the hollow axis portion, in the braid material for forming the yams for fishing by combining a plurality of twisting the braid material as a strand, for braiding braid member All of the yarns have a twist in a direction opposite to the twist direction when forming the net yarn using the braid as a strand.   The braided material is all braided by left (Z) twisted yarns, and becomes a strand for forming a knotless network by right (S) twisted double-twisting. Item 1. A braid for fishery according to item 1.   The braided material for fishery according to claim 2, wherein each yarn twisted in the left (Z) is a left (Z) twist of a yarn bundle twisted in the right (S) twist.   Each yarn twisted in the left (Z) is a yarn that is knitted in the right (S) direction when braiding the braided material, and a yarn that is knitted in the left (Z) direction, with the number of twists changed. The braided material for fishery according to claim 2, wherein

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