JPS5995836A - Knotless net for set net - Google Patents
Knotless net for set netInfo
- Publication number
- JPS5995836A JPS5995836A JP20510082A JP20510082A JPS5995836A JP S5995836 A JPS5995836 A JP S5995836A JP 20510082 A JP20510082 A JP 20510082A JP 20510082 A JP20510082 A JP 20510082A JP S5995836 A JPS5995836 A JP S5995836A
- Authority
- JP
- Japan
- Prior art keywords
- net
- fabric
- knotless
- yarn
- coating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は無結節に編製されてなる定置漁網用網地に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a net fabric for stationary fishing nets knitted without knots.
現在定置漁網として使用されている網地は、合成繊維を
素材としてこれを所望の太さに撚製してなるヤーンを任
意本数組編して編製されたラッセル網地、或いは該ヤー
ンを更に所望の太さに撚製したストランドを2〜3子互
に撚合組合せて編製された無結節網や捩子網、及び該ス
トランドの2〜4子を更に撚合して一旦網地ロープとな
し而してこれを結節@製さぜた有結節網地等である。The nets currently used as stationary fishing nets are raschel nets made by knitting any number of yarns made of synthetic fibers twisted to a desired thickness, or raschel nets made by knitting any number of yarns made of synthetic fibers, or yarns made of synthetic fibers twisted to a desired thickness. Knotless nets or twisted nets are knitted by twisting and combining 2 to 3 strands of twisted strands to a thickness of This is then made into knotted mesh fabrics.
ところで定置漁網は、海中の所定場所に長期間網地を展
張させて回遊する魚群を威嚇、誘導、陥弁させて魚獲す
るものであるから、該網地にはその使用経過とともに硅
藻類や貝類等の付着物が多量に付着し、且これらが短詩
に根拡成長するため放置しおくと潮流抵抗が増大されて
網地の吹かれや潮通し不良に伴う魚群に対する威嚇誘導
効果が喪失され、魚獲不能の原因となるばかりか破網や
定置づれ等重大な事故を招来する結果ともなる。By the way, fixed fishing nets are used to capture fish by intimidating, guiding, and forcing migratory schools of fish to catch fish by extending the net over a long period of time at a predetermined location in the sea. A large amount of shellfish and other deposits adhere to the net, and if left untreated, the tidal current resistance will increase and the netting will be blown away, and the effect of intimidating fish schools due to poor tidal flow will be lost. This not only causes the inability to catch fish, but also leads to serious accidents such as broken nets and misplacement.
これがため定置漁業においては、その漁期間中度々これ
ら伺着物が付着且根拡成長した網地を海中よυ引揚け、
乾燥させて死滅させたるうえこれを叩打除去する所謂組
子し作業をなさねばならずこれに要する経費や労力は重
大なものである。For this reason, in fixed fishing, during the fishing period, nets with these foreign matter attached to them and which have grown roots are often pulled out of the sea.
In addition to drying and killing them, it is necessary to perform a so-called kumiko work to remove them by beating, and the cost and labor required for this is significant.
かかる実情に鑑み発明者は鋭意研究の結果、珪藻類や貝
類等の付着物が網地に4勺着し且根拡成長する形態は、
網地を構成する網糸に内在するヤーン相互或いはストラ
ンド相互の撚り目間隙や組編間隙に珪藻類の胞子や貝類
の幼稚子が先づ伺着着床し、而して該間隙内に根拡固着
しながら成長することを求明し、かかる経緯から合成繊
維を撚合してなるロープ若しくは組編してなるプレート
を芯体と寿し、該χ4、体の外周囲に合成樹脂よりなり
且その外周囲に氾、体に形成されたストランド撚り目凹
凸若しくは組編凹凸を緩かに現出した筒状被覆層を熔融
被覆形成させてなる定置漁網用原糸で編製してなる網地
を用いることにより、無公害で且長期使用においてもこ
れら付着物の付着且根拡成長を著るしく抑制防止できる
ことを解明し、既に多くの先願でその内容を開示してい
る。In view of this situation, the inventor conducted extensive research and found that the form in which diatoms, shellfish, etc. adhere to the net fabric and the roots expand is as follows.
Diatom spores and shellfish larvae first arrive and settle in the intertwisted gaps and braided gaps between the yarns or strands that are present in the net threads that make up the net fabric, and then take root within these gaps. We sought to grow while spreading and fixing, and based on this background, we used a rope made of twisted synthetic fibers or a plate made of braided fibers as the core body, and the outer periphery of the body was made of synthetic resin. A net fabric knitted from raw yarn for stationary fishing nets, which has a cylindrical coating layer formed on its outer periphery that gently reveals the irregularities of strand twists or knitting formed on the body. It has been found that by using this method, the adhesion and root expansion of these deposits can be significantly suppressed and prevented even during long-term use without causing any pollution, and this has already been disclosed in many prior applications.
然るにかかる定置漁網用原糸は有結節網地の如く、網糸
が一本で結節編製される網地においては優れた実用性能
を発揮するものの、箱網等に使用する網地はせいぜいそ
の網目合が15〜15α程度と非常に細かなうえ、潮通
しが良く而も頻繁に揚網操作をなすうえから嵩が少なく
軽量な網地が要望されることから、専らラッセル網地や
無結節網地等の無結節網地が使用されている。これがた
めかかるラッセル網地や無結節網地の編製に該定置漁網
用原糸を使用しても、該ラッセル網地や無結節網地は少
なくとも2本以上のヤーン若しくはストランドが組織或
いは撚合組合されて網糸が構■されるものであるから、
該定置漁網用原糸相互の撚り目が必然的に形成されるこ
ととなり、該撚り目に砂礫類や貝類の胞子や幼稚子が(
=j着し且根拡成長する危険が生ずる。これがためラッ
セル網地や無結節網地を使用している箱網等では未だに
有害危険な防藻剤を多量に使用したり、或いは重大な経
費、労力をかけてその網干し作業をなしている実情にあ
る。However, although raw yarn for stationary fishing nets exhibits excellent practical performance in knotted nets such as knotted nets, nets used for box nets etc. exhibit excellent practical performance. Because the mesh is very fine, about 15 to 15α, and the net has good water penetration, and because of the frequent net-hauling operations, a lightweight net with little bulk is required. A knotless mesh fabric such as ground fabric is used. Even if the raw yarn for stationary fishing nets is used to knit raschel net fabrics or knotless net fabrics, the raschel net fabrics or knotless net fabrics have at least two or more yarns or strands organized or twisted together. Because the thread is constructed by
Twisted lines are inevitably formed between the raw yarns for fixed fishing nets, and spores and young larvae of gravel and shellfish (
There is a risk that the roots will spread and grow. For this reason, box nets using raschel netting or knotless netting still require the use of large amounts of harmful and dangerous algae-proofing agents, or require significant expense and labor to dry the nets. That's the reality.
本発明はかかる問題を解決するだめになされたものであ
って、本発明はラッセル網地、無結節網地或いは捩子網
地等無結節に編製された網地を構成する網糸の外周囲に
、合成樹脂若しくは合成ゴムよりなりその厚さが50〜
500μで且その外表面には、網糸に形成されてなるヤ
ーン若しくはストランドの撚り目凹凸或いは組編凹凸を
緩かに現出しだ被覆層を形成させ、以って無公害で海中
における長期使用に際しても珪藻類や貝類等の付着物の
伺着並ひに七の根拡成長を著るしく抑制防止できる定置
漁網用無結節網地を提供するものである。The present invention has been made to solve this problem. It is made of synthetic resin or synthetic rubber and has a thickness of 50~
500μ, and a coating layer is formed on the outer surface that gently reveals the unevenness of the twists or braids of the yarns or strands formed on the mesh thread, making it possible to use it in the sea for a long time without any pollution. The object of the present invention is to provide a knotless net fabric for fixed fishing nets that can significantly suppress and prevent the accumulation of adhering substances such as diatoms and shellfish, as well as the spread of roots.
以下に本発明実施例を図に基づき詳述すれば、第一図は
無結節網地を用いた本発明の拡大断面図であって、網糸
(1)は合成繊維素41を用いて編製されるラッセル網
地、無結節網地或いは捩子網を構成するものであって、
ラッセル網地における網糸(1)では、合成繊維を所望
の太さに撚製してなるヤーン(IA)を少なくとも2本
以上を互に組編して形成されるものであるが、無結節網
地や捩子網地における網糸(1)は、該ヤーン(IA)
の任意本数を更に撚製してストランF (IB)となし
、該ストランド(IB)の2〜4本を互に撚合組合せて
形成されている。そしてかかる網糸(1)の外周囲には
、合成樹脂若しくは合成ゴムよりなりその厚さが50〜
500μで且網糸(1)に形成されたヤーン若しくはス
トランドの撚り目凹凸若しくは組編凹凸がその夕)表面
に緩かに現出された被覆層(2)が形成されている。こ
の被覆層(2)の形成に際しては、合成樹脂若しくは合
成ゴムを有機浴剤で溶解さぜだ溶剤被覆液或いは合成樹
脂若しくは合成ゴムを水に懸濁させたエマールジョン被
覆畝中に網地を浸漬させたり、或いは噴霧され若しくは
塗布されたる後加熱乾燥し溶剤や水を揮散させて形成さ
れるものであるが、本発明においては網地(1)の外周
囲に被覆層(2)を形成するものであって、一般的な樹
脂加工のように網糸α)の内部に至る捻で溶剤被覆液や
エマ/l/ジョン被覆液を拡散浸透させることは、網地
全体が硬化し嵩高となって揚網時の作業に支障があるば
かりか、網目の交差部も固着化され海中使用に際して網
地の展開が阻害されることともなる。これかため本発明
で使用する溶剤被覆液若しくはエマルジョン被覆液にお
いては、その粘度が500〜5000ボイズ程度の比較
的高粘度のものを用いることが網糸(1)内の拡散浸透
を防止するうえで必要となる。更に本発明では網糸0)
に形成されたヤーン(因若しくはストランド(IB)の
撚り目凹凸或いは組編凹凸を被覆層(2)の外表面に緩
かに現出させるために、網糸(1)に添着された溶剤被
覆液若しくはエマルジョン被覆液を加熱乾燥することに
より溶剤や水を揮散させることによる被覆層(2)の揮
散収縮所謂痩せを活用するものであるため、溶剤被覆液
若しくはエマノドジョン被捷液中の合成樹脂若しくは合
成ゴムの成分は重量比率で25〜50%、揮散する溶剤
若しくは水の重量比率を50〜75%程度で構成される
ことが望1れる。かくしてなる溶剤被覆液若しくはエマ
ルジョン被覆液中に網地を浸漬し、或いは網地に噴霧若
しくは塗布し而して加熱乾燥をなすことにより溶剤或い
は水分を揮散させることにより網糸(1)の外周囲の形
成される被覆層(2)の厚さは、極度に薄くなると使用
に際しての耐摩耗性に難点が生じ、反面必要以上に厚く
形成されると剛性が付与され網地の柔軟性を損う結果と
なる。Embodiments of the present invention will be described below in detail based on the drawings. Figure 1 is an enlarged sectional view of the present invention using a knotless mesh fabric, in which the mesh yarn (1) is knitted using synthetic cellulose 41. It constitutes a raschel net, a knotless net or a twisted net,
The mesh yarn (1) in the raschel net fabric is formed by braiding together at least two yarns (IA) made by twisting synthetic fibers to a desired thickness, but it is knotless. The net yarn (1) in the net fabric or the threaded net fabric is the yarn (IA)
A desired number of strands are further twisted to form a strand F (IB), and 2 to 4 of the strands (IB) are twisted together to form a strand. The outer periphery of the mesh thread (1) is made of synthetic resin or synthetic rubber and has a thickness of 50 to 50 mm.
A covering layer (2) with a thickness of 500 μm and in which the twisted or braided unevenness of yarns or strands formed on the mesh yarn (1) are loosely exposed on the surface is formed. When forming this coating layer (2), a synthetic resin or synthetic rubber is dissolved in an organic bath agent, a solvent coating solution is used, or an emulsion is prepared by dissolving the synthetic resin or synthetic rubber in water. Although it is formed by dipping, spraying, or coating and then heating and drying to volatilize the solvent and water, in the present invention, a coating layer (2) is formed around the outer periphery of the net fabric (1). However, if the solvent coating liquid or emma/l/john coating liquid is diffused and penetrated by twisting into the inside of the mesh yarn α) as in general resin processing, the entire fabric will harden and become bulky. This not only impedes work during net hoisting, but also causes the intersections of the mesh to become stuck, impeding the deployment of the net during underwater use. Therefore, in the solvent coating liquid or emulsion coating liquid used in the present invention, it is recommended to use one with a relatively high viscosity of about 500 to 5000 voids in order to prevent diffusion and penetration into the mesh yarn (1). is required. Furthermore, in the present invention, net thread 0)
A solvent coating is attached to the mesh yarn (1) in order to gently expose the twisted or braided unevenness of the yarn (or strand (IB)) on the outer surface of the coating layer (2). This method takes advantage of the so-called thinning of the coating layer (2) by heating and drying the liquid or emulsion coating liquid to volatilize the solvent and water. It is preferable that the synthetic rubber component is composed of about 25 to 50% by weight, and the solvent or water to be volatilized is about 50 to 75% by weight. The thickness of the coating layer (2) formed around the outer periphery of the mesh thread (1) is determined by dipping or spraying or applying it onto the mesh fabric and heating and drying it to volatilize the solvent or moisture. If it becomes extremely thin, there will be a problem in abrasion resistance during use, while if it is made thicker than necessary, rigidity will be imparted and the flexibility of the fabric will be impaired.
而も該被覆層(2)の外表面には、網糸(1)に形成さ
れてなるヤーン(IA)若しくはストランド(IB)の
撚り目凹凸或いは組編凹凸を緩よに現出させるものであ
るが、網糸(1)の分径は箱網等に使用される網地では
略1〜3 mmφ程度であるものの、垣網等に使用され
る網地では5〜8朋φ程度と広範に亘り、且その網糸分
径が細いものではその網糸(1)を構成するヤーン(I
A)若しくはストランド(1,8)の分径も一段と細い
ものが使用されるため、該ヤーン(IA)やストランド
(IB)の撚合若しくは組編で形成される撚り目凹凸或
いは組編凹凸も極めて小さなものとなり、かかる網糸(
1)に厚い被覆層(2)を形成させだる場合には、その
外表面に該撚り目凹凸或いは組編凹凸が現出されにくく
なることに留意すべきである。かかる事由から発明者の
各条の実験結果により網糸(1)の分径が05〜]−、
Ommφの場合には50〜80μ、網糸(1)の分径が
10〜2.0 mrnφの場合には80〜200μ、網
糸(1)の分径が20〜4.0 mmφの場合には20
0〜400μ、更に網糸0)の分径が40〜8.0 m
rnφの場合には500μ程度の厚さがl摩耗性や柔軟
性並ひに撚り目凹凸或いは組編凹凸を現出形成させるう
えで最適である。Moreover, on the outer surface of the covering layer (2), the twist unevenness or the braided unevenness of the yarn (IA) or strand (IB) formed in the mesh thread (1) is made to appear gently. However, the diameter of the net thread (1) is approximately 1 to 3 mm in diameter for nets used for box nets, etc., but it varies widely from 5 to 8 mm for nets used for fence nets, etc. , and if the thread diameter is small, the yarn (I) constituting the thread (1)
A) or because the diameter of the strands (1, 8) is even smaller, the twisted or braided unevenness formed by twisting or braiding the yarns (IA) or strands (IB) is also It becomes extremely small, and the mesh thread (
It should be noted that if a thick coating layer (2) is formed on 1), the twisted or braided unevenness will be less likely to appear on the outer surface. For this reason, according to the inventor's experimental results for each thread, the diameter of the mesh yarn (1) is 05~]-,
50 to 80μ in the case of Ommφ, 80 to 200μ in the case where the net thread (1) has a minute diameter of 10 to 2.0 mrnφ, and when the minute diameter of the net yarn (1) is 20 to 4.0 mmφ. is 20
0 to 400μ, and the minute diameter of the net thread 0) is 40 to 8.0 m
In the case of rnφ, a thickness of about 500 μm is optimal for abrasion resistance, flexibility, and the appearance of twisted or braided unevenness.
第二図には被覆層(2)の形成状態が示きれており該第
二図からも明確なように、網糸0)に添着された溶剤被
覆液若しくはエマルジョン被覆液は、加熱乾燥によ、!
1ll−f:の50〜75%程度の溶剤或いは水分が揮
散されるものであるから、網糸(1)に添着される時点
では所要の被覆層(2)の厚さの略2〜4倍程度の厚さ
所謂点線で示す程度に、而もその粘度の作用で断面略円
形に添着をれる。Figure 2 shows the state of formation of the coating layer (2), and as is clear from Figure 2, the solvent coating liquid or emulsion coating liquid attached to the mesh yarn 0) is heated and dried. ,!
Since about 50 to 75% of the solvent or moisture of 1ll-f is volatilized, the thickness of the coating layer (2) is approximately 2 to 4 times the required thickness at the time it is attached to the net yarn (1). The thickness is approximately the same as that shown by the dotted line, and due to its viscosity, the cross section is approximately circular.
而して加熱乾燥により溶剤或いは水分の50〜75%が
揮散されるため、揮散収縮所謂痩せが起り撚り1凹陥部
若しくは組編凹陥Bli (2A)に徐看された溶剤被
覆液若しくはエマルジョン被i/fLは、該撚り1凹陥
部若しくは組編凹陥部(2A)に沿って揮散収縮しなが
ら固化し、その外表面にヤーン(IA)若しくはストラ
ンド(IB)撚り目凹凸或いは組編凹凸を緩かに現出し
た被覆層(2)が形成される。Since 50 to 75% of the solvent or moisture is volatilized by heating and drying, so-called thinning occurs due to volatilization shrinkage, and the solvent coating liquid or emulsion coated gradually in the twist 1 concave part or the braid concave part Bli (2A). /fL solidifies while volatilizing and shrinking along the twist 1 concave part or braid concave part (2A), and loosely forms yarn (IA) or strand (IB) twist unevenness or braid unevenness on its outer surface. A coating layer (2) is formed which appears on the surface.
そして被覆層(2)の形成に際して、本発明品により十
分な柔軟性を付与させる場合にはポリウレタン樹脂や合
成ゴムによる溶剤被覆液若しくはエマルジョン被覆液を
、筐た耐摩耗性を十分イーJ褐さぜるためにはビニル系
、ポリエステル糸、ポリアミド系合成樹脂による溶剤被
覆液若しくはエマルジョン被覆液が好適である。When forming the coating layer (2), if sufficient flexibility is to be imparted to the product of the present invention, a solvent coating solution or an emulsion coating solution made of polyurethane resin or synthetic rubber is applied to the coating layer (2) to ensure sufficient abrasion resistance. For this purpose, a solvent coating solution or an emulsion coating solution using vinyl, polyester thread, or polyamide synthetic resin is suitable.
本発明は上述の如き構成よりなるものであって、本発明
はラッセル網地、無結節網地或いは捩子網地等無結節に
編製されてなる網地の網糸の外周囲に、合成樹脂若L
<は合成ゴムよりなりその厚さが50〜500μで且そ
の外表面には、網糸に形成されてなるヤーン若しくはス
トランドの撚り目凹凸或いは組編凹凸が緩かに現出され
た被覆層が形成されてなるため、海中使用に際し無公害
であるばかりか珪藻類や貝類等付着物の着床場ノブ[が
なく、且その根拡も不能となるため長期使用に際しても
これら付着物の付着成長が著るしく抑制防止され、潮通
しが良好なうえ網成シも良く漁獲効果が著るしく向上す
る。更に被覆層の外表面には網糸に形成されたヤーン若
しくはストランドの撚り目凹凸或いは組編凹凸が緩かに
現出されてなるため、ネノトホーラーの如きローラーで
挾圧しなから揚網作業をなす場合や、手繰り揚網作業に
おいても網地の滑りが防止され揚網作業性が向上するば
かりか、揚網に際して網地の水切れが極めて良く揚網作
業力が犬[;」に削減されることとなる。而も本発明に
おいては被覆層が網糸の外周囲に膜状に形成されるもの
であるから、可撓性に優れ且その厚さや選択される合成
樹脂若しくは合成ゴムの特性と相撲って柔軟性に優れる
だめ、海中における展開性も極めて良い。史に本発明に
おいては被覆層が網目交差部分にも形成てれるため、無
結節網地や捩子網地に見られる破網連鎖が防止できる等
多くの特徴を具備した定置漁網用無結節網地である。The present invention has the above-mentioned configuration, and the present invention applies synthetic resin to the outer periphery of the net threads of a knotless knitted fabric such as a raschel net, a knotless net, or a screw net. Young L
< is made of synthetic rubber and has a thickness of 50 to 500 μm, and its outer surface has a coating layer in which the twisted unevenness or braided unevenness of yarn or strand formed in a mesh yarn is gently exposed. Not only is it non-polluting when used underwater, but it also has no anchoring site for diatoms, shellfish, etc., and it is impossible for the roots to spread, so even during long-term use, these deposits do not grow. The fishing effect is significantly improved, with good tide flow and good net formation. Furthermore, since the outer surface of the coating layer has loosely uneven twists or braids of yarns or strands formed on the net yarn, the netting operation is not carried out without being pinched with a roller such as a net hauler. This not only prevents slippage of the net and improves the workability of lifting the net, but also allows the net to drain extremely well when lifting the net, reducing the work force required to lift the net to an absolute minimum. becomes. However, in the present invention, since the covering layer is formed in the form of a film around the outer periphery of the mesh yarn, it has excellent flexibility and is flexible due to its thickness and the characteristics of the selected synthetic resin or synthetic rubber. Not only does it have excellent properties, but it also has extremely good ability to deploy underwater. Historically, in the present invention, the knotless net for fixed fishing nets has many features, such as being able to prevent the chain of broken nets seen in knotless net fabrics and twisted net fabrics, since the coating layer is also formed at mesh intersections. It is the earth.
第一図は無結節網地を用いた本発明の拡大IDr面図、
第二図は被覆層形成状態を示す説明図、第三図は本発明
の見取図である。
符号の説明
(1) ・・・・・・網糸
(IA)・・・・・・ヤーン
(IB)・・・・・・ストランド
(2) ・・・・・・被覆層
(2A)・・・・・・撚9目凹陥部
若しくは組編凹陥部
特許出願人
小 室 徳太部
手 続 補 正 書
昭和58年3月28[
特許庁長官
若杉和夫殿
1、事件の表示
昭和57年特許願第205100号
2、発明の名称
定置漁網用無結節網地
3補正をする渚
4補正命令の日付
自発補正
5補正により増加する発明の数
な し
く1)明細書第8頁7行目F・・溶剤或いは水分を揮散
させることにより」を次の通り補正する。
「溶剤或いは水分が揮散されて・・」
(2)明細書第8頁14行目F組編凹凸を緩よに・」を
次の通りに補正する。
ト・組編凹凸を緩やかに・1
(3)明細書記12頁6行目[・・・網地である。」の
後に次の字句を追加する。
喚験例
テトロン250D原糸36本を撚線して網糸分径15胴
目合30咽の無結節網地、及び該無結節網地をポリ塩化
ビニール樹脂30係トルエン70%の溶剤被覆液中に浸
漬後乾燥させ網糸外周囲に平均85μの被覆層が形成さ
れてなる無結節網地、並びにポリ酢酸ビニール樹脂42
係のエマルジョン被覆液中に浸漬後乾燥させ網糸外周囲
に平均71μの被覆層が形成されてなる無結節網地の3
種類を、相模湾真鶴沖合水深10〜15mK略8ケ月間
展張し珪藻類や貝類の(=1、 着状態を調べた結果を
次表に示す。
※展張試験開始・・・昭和57年3月10日※数値は網
地m′当υのイ」着量(2)※測定方法・・毎測定時各
試験網地3〃l′を引揚げ、24時間自然乾燥後刺着状
態の11網地重量を測定し正味網地重量を差引いて求め
た。
上述の実験例からも明白なように本発明による定置漁網
用無結節網地は、海中における長期使用においても珪藻
類や貝類の付着が著るしく抑制されることが判明し、特
に溶剤被覆液の浸漬によりポリ塩化ビニール樹脂被覆要
地でも無被覆層の無結節網地に比べると初期段階では比
較的硅藻類や貝類の付着が抑制されるものの、略3ケ月
以上の使用経過とともに伺着量が急速に増大することが
認められる。これはエマルジョン被覆液により形成され
た被覆層が海中使用経過とともに海水に溶解され次第に
被覆層が崩壊される結果によるものと推定され、また初
期段階においても溶剤被覆液によるポリ塩化ビニール樹
脂被覆層が形成された無結節網地に比べて伺着量が多い
ことは、ポリ酢酸ビニール樹脂自体の吸湿性(吸水性)
が大きく、これがため被覆層の外表面が粗面化されたり
吸湿吸水に伴う多数の微孔が形成されたりして砂礫類や
μ類等の微細な胞子や幼稚子の着床を増長し且これらが
成長する結果によるものと判断される。
無被覆の無結節網地においては略使用経過60日で網目
全体が伺着物により閉塞され実質的に使用不能の状態で
ある。」
194−Figure 1 is an enlarged IDr side view of the present invention using knotless mesh;
FIG. 2 is an explanatory view showing the state of coating layer formation, and FIG. 3 is a sketch of the present invention. Explanation of symbols (1) ...Net yarn (IA) ...Yarn (IB) ...Strand (2) ...Coating layer (2A) ... ...Patent applicant for twisted 9-stitch recessed part or knitted recessed part Tokutabu Komuro Procedures Amendment March 28, 1981 [Mr. Kazuo Wakasugi, Commissioner of the Japan Patent Office 1, Indication of the case 1988 Patent application No. 205100 2, Title of invention: Knotless net for fixed fishing nets 3 Amendment date of Nagisa 4 amendment order Voluntary amendment 5 No increase in number of inventions due to amendment 1) Specification, page 8, line 7 F... "By volatilizing the solvent or water" is corrected as follows. "As the solvent or moisture is volatilized..." (2) Page 8, line 14 of the specification, "Make the irregularities of the braided F loose." should be corrected as follows. (3) Specification page 12, line 6 [...It is a mesh fabric. ” and then add the following phrase: Experimental example: A knotless net fabric with a mesh diameter of 15 yarns and 30 yarns was made by twisting 36 Tetron 250D yarns, and the knotless fabric was coated with a solvent coating solution containing 30% polyvinyl chloride resin and 70% toluene. A knotless net fabric formed by immersing it in a cloth and drying it to form a coating layer of an average thickness of 85μ around the outside of the net yarn, and polyvinyl acetate resin 42
Knotless net fabric 3, which is immersed in the emulsion coating solution and dried to form a coating layer with an average thickness of 71μ around the outer circumference of the net threads.
The following table shows the results of a survey of the types of diatoms and shellfish (=1) that were spread out at a depth of 10 to 15 mK off the coast of Manazuru, Sagami Bay for about 8 months. 10 days *The numerical value is the amount of wear of the net fabric (m' to υ) (2) *Measurement method: At each measurement time, 3 l' of each test net fabric was pulled up, and after 24 hours of natural drying, 11 nets in a stuck state were collected. It was determined by measuring the net weight and subtracting the net weight of the net.As is clear from the above experimental examples, the knotless net for fixed fishing nets according to the present invention does not attract diatoms and shellfish even during long-term use in the sea. It was found that the adhesion of siliceous algae and shellfish was significantly suppressed in the initial stage, especially when immersed in a solvent coating solution, even on important areas coated with PVC resin, compared to knotless mesh fabrics with no coating layer. However, it is observed that the amount of adhesion increases rapidly over the course of approximately 3 months of use.This is because the coating layer formed by the emulsion coating liquid is dissolved in seawater over the course of underwater use, and the coating layer gradually disintegrates. It is presumed that this is due to the results obtained, and the fact that the amount of adhesion is higher than that of knotless net fabrics on which a polyvinyl chloride resin coating layer is formed using a solvent coating solution even in the initial stage is due to the moisture absorption of the polyvinyl acetate resin itself. Characteristic (water absorption)
As a result, the outer surface of the coating layer is roughened and many micropores are formed due to moisture absorption, which increases the settlement of fine spores and infants such as gravel and microorganisms. It is judged that this is due to the growth of these things. In the case of the uncoated knotless net fabric, the entire mesh is obstructed by debris after about 60 days of use, and it is essentially unusable. ” 194-
Claims (1)
樹脂若しくは合成ゴムよりなりその厚さが50〜500
μで且網糸に形成されたヤーン若しくはストランドの撚
り目凹凸或いは組編凹凸をその外表面に緩かに現出した
被覆層が形成されてなることを特徴とする定置漁網用無
結節網地■その粘度が500〜5000ボイズで且合成
樹脂若しくは合成ゴムが25〜50%重量の割合で有機
溶剤に溶解されてなる溶剤被覆液、若しくは水に懸濁さ
れてなるエマルジョン被覆液中に、網地を浸漬し或いは
網地に噴霧若しくは塗布し、而して加熱乾燥をなすこと
により溶剤或いは水分を揮散させ、以って網糸の外周囲
に被覆層を形成させてなる特許請求範囲第1項記載の定
置漁網用無結節網地。■The outer periphery of the knotless knitted net yarn is made of synthetic resin or synthetic rubber, and its thickness is 50 to 500.
A knotless net fabric for a set fishing net, characterized in that a coating layer is formed on the outer surface of the yarn or strand, which is made of μ and has a loosely exposed twist or braid unevenness formed on the net thread. ■ A solvent coating liquid with a viscosity of 500 to 5000 voids and a synthetic resin or synthetic rubber dissolved in an organic solvent in a proportion of 25 to 50% by weight, or an emulsion coating liquid in which the synthetic resin or synthetic rubber is suspended in water. Claim 1, which is obtained by evaporating the solvent or moisture by dipping the fabric or spraying or coating it on the fabric and then heating and drying it, thereby forming a coating layer around the outer periphery of the fabric. Knotless net fabric for fixed fishing nets as described in .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20510082A JPS5995836A (en) | 1982-11-22 | 1982-11-22 | Knotless net for set net |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20510082A JPS5995836A (en) | 1982-11-22 | 1982-11-22 | Knotless net for set net |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5995836A true JPS5995836A (en) | 1984-06-02 |
Family
ID=16501412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20510082A Pending JPS5995836A (en) | 1982-11-22 | 1982-11-22 | Knotless net for set net |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5995836A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6224660U (en) * | 1985-07-27 | 1987-02-14 | ||
JPS6339198U (en) * | 1986-08-29 | 1988-03-14 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5691091A (en) * | 1979-12-24 | 1981-07-23 | Tokutarou Komuro | Stock yarn for set net |
-
1982
- 1982-11-22 JP JP20510082A patent/JPS5995836A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5691091A (en) * | 1979-12-24 | 1981-07-23 | Tokutarou Komuro | Stock yarn for set net |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6224660U (en) * | 1985-07-27 | 1987-02-14 | ||
JPS6339198U (en) * | 1986-08-29 | 1988-03-14 |
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