JPS6222138Y2 - - Google Patents
Info
- Publication number
- JPS6222138Y2 JPS6222138Y2 JP4205280U JP4205280U JPS6222138Y2 JP S6222138 Y2 JPS6222138 Y2 JP S6222138Y2 JP 4205280 U JP4205280 U JP 4205280U JP 4205280 U JP4205280 U JP 4205280U JP S6222138 Y2 JPS6222138 Y2 JP S6222138Y2
- Authority
- JP
- Japan
- Prior art keywords
- copper
- tin
- nets
- wire
- fishing
- 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.)
- Expired
Links
- 230000003373 anti-fouling effect Effects 0.000 claims description 13
- 229910001096 P alloy Inorganic materials 0.000 claims description 8
- YWIHFOITAUYZBJ-UHFFFAOYSA-N [P].[Cu].[Sn] Chemical compound [P].[Cu].[Sn] YWIHFOITAUYZBJ-UHFFFAOYSA-N 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 239000007779 soft material Substances 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 17
- 229910052802 copper Inorganic materials 0.000 description 13
- 239000010949 copper Substances 0.000 description 13
- 239000013535 sea water Substances 0.000 description 11
- 241000251468 Actinopterygii Species 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 7
- 229920002994 synthetic fiber Polymers 0.000 description 7
- 239000012209 synthetic fiber Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 238000009360 aquaculture Methods 0.000 description 6
- 244000144974 aquaculture Species 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- -1 iron wires Chemical compound 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 241000206761 Bacillariophyta Species 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 241000195628 Chlorophyta Species 0.000 description 1
- 241000238586 Cirripedia Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 241000251555 Tunicata Species 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000002519 antifouling agent Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- BSPSZRDIBCCYNN-UHFFFAOYSA-N phosphanylidynetin Chemical compound [Sn]#P BSPSZRDIBCCYNN-UHFFFAOYSA-N 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Cultivation Of Seaweed (AREA)
- Farming Of Fish And Shellfish (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Description
本考案は海洋生物の付着繁殖を防止した防汚性
の定置網、養殖用網、生簀網等に関する。
さらに詳しくは特定の銅合金細線と合成繊維と
を混撚りして成る網糸により編網する漁網に関す
るものである。
定置網漁、生簀、養殖場等で使用される麻糸製
漁網、金網、化繊網等の漁網は長期間海中に沈め
られて使用するため、海洋生物、例えばフジツ
ボ、ホヤ、緑藻、珪藻類等が付着繁殖し、これを
放置すると網目が塞がつて海水の流通が悪くな
り、生簀、養殖場にあつては海水中の溶存酸素が
著しく欠乏して時には養殖魚が窒息死する場合も
ある。また定置網では海洋生物の付着によつて海
流の抵抗を受け、定置網が海流に押し流される被
害にあつたりする。
そのため定期的に漁網に付着した海洋生物を除
去する必要があるが、かかる除去作業には潜水に
よるか、または網を引き揚げて除去するかであつ
て、多大の労力を要するので海水中に長期間漁網
を浸漬しても海洋生物が付着しないものが望まれ
ている。
近年この問題の解決策として漁網の素材に有機
スズ系防汚剤を含浸または含有させた漁網が提案
されているが、薬剤自体が毒性物質であり、長期
間にわたつて防汚効果を維持することが期待でき
ず、且つ海洋汚染の問題とも関連して現状ではそ
の使用が避けられている。
一方、銅が海洋生物の付着を防止することか
ら、漁網の素材に銅細線を撚り合せた種々の防汚
漁網が提案されている。
しかし、銅は海水中での腐食速度が極めて早い
難点がある。例えば直径0.10〜0.25mmの銅細線を
外部に露出するように撚り込んだ漁網は海水中に
おいて初期の使用には優れた防汚性を示すが、２
〜３ケ月程度で腐食断線し、６ケ月後には完全に
溶解腐食して防汚性の効果が期待できない。
また銅細線が腐食により断線した状態で漁網を
海中から引揚げる場合、断線した線の尖端で漁労
者の手、その他の皮膚を傷つける危険があり、ま
た断線片が魚体に突きささり安全性に欠く問題が
ある。
そのため銅線を表面に露出させない漁網、銅よ
り卑な金属細線と銅細線を撚り込んだ漁網も提案
されているが、前者の場合、海水中において漁網
の表面にヌタ等が付着すると、内層に撚り込まれ
た銅の溶解を抑止したり、銅が塩基性物質と反応
して難溶性の塩基性銅を生成するのでその効果が
期待できない。
後者の場合、銅より卑な金属細線例えば鉄線が
先に溶解腐食し断線するので、前記同様断線した
尖端での危険性があり、且つ局部電池を構成しな
い鉄線には著しく海洋生物が付着する欠点があ
る。
本考案はかかる欠点を解決するために銅より腐
食抵抗がすぐれ、防汚性に適し、且つ可撓性があ
つて合成繊維と漁網に撚り合せできる銅合金があ
るかどうかを鋭意検討した結果、本考案を完成さ
せたものである。本考案は合成繊維に銅−スズ−
リン系合金の細線とを撚り合せて成ることを特徴
とする防汚性漁網である。
以下に試験例をあげて各素材に対する海水中の
挙動を育成する。
直径１mmまたは2.5mmの線材および1dm2の板材
を巾１ｍ、長さ２ｍの硬質塩化ビニル枠に、適当
な間隔にナイロン糸で固定し、養殖用イカダから
海面下2.2ｍに垂直に吊し１ケ年間放置しこの間
定期的に試料を引き上げて海洋生物の付着状態と
腐食状態、すなわち各種試料の海水に対する溶解
量を調べた。溶解量の測定は同一試料の３種の重
量減をはかりその平均値とした。
なお、海洋生物の付着状態はつぎの基準によつ
た。
×：ほとんど付着しない。
△：わずかに付着するが、実用上全く支障な
い。
▲：全表面の15〜30％に付着する。
○：多量に付着する。
これらの結果を第１表に示す。
The present invention relates to antifouling fixed nets, aquaculture nets, fish pen nets, etc. that prevent the adhesion and propagation of marine organisms. More specifically, the present invention relates to a fishing net knitted with a net yarn made by mixing and twisting a specific fine copper alloy wire and synthetic fiber. Fishing nets such as hemp yarn fishing nets, wire nets, and synthetic fiber nets used in fixed net fishing, fish pens, and fish farms are submerged in the sea for long periods of time, so they are contaminated with marine organisms such as barnacles, sea squirts, green algae, and diatoms. If left unchecked, the nets become clogged, impeding the flow of seawater, and in fish cages and farms, dissolved oxygen in the seawater becomes severely depleted, sometimes resulting in the fish suffocating to death. In addition, fixed nets are subject to resistance from ocean currents due to marine organisms attached to them, and the fixed nets may be washed away by the ocean currents. Therefore, it is necessary to periodically remove marine organisms attached to fishing nets, but such removal work requires a lot of effort, either by diving or by pulling up the nets, so it is necessary to remove marine organisms attached to fishing nets for a long period of time. What is desired is a fishing net that will not attract marine organisms even if it is soaked. In recent years, as a solution to this problem, fishing nets in which the material of the fishing net is impregnated or contained with an organotin antifouling agent have been proposed, but the agent itself is a toxic substance and the antifouling effect cannot be maintained for a long period of time. At present, its use is avoided because it cannot be expected to do so and is also associated with the problem of marine pollution. On the other hand, since copper prevents the adhesion of marine organisms, various antifouling fishing nets have been proposed in which fine copper wires are twisted into the fishing net material. However, copper has the disadvantage that it corrodes extremely quickly in seawater. For example, fishing nets made of thin copper wires with a diameter of 0.10 to 0.25 mm twisted so as to be exposed to the outside exhibit excellent antifouling properties when initially used in seawater;
The wire will corrode and disconnect in about 3 months, and will be completely dissolved and corroded after 6 months, making it impossible to expect any antifouling effect. In addition, if a fishing net is pulled up from the sea with the fine copper wire broken due to corrosion, there is a risk of injuring the fisherman's hands or other skin with the sharp end of the broken wire, and the broken wire may pierce the fish body, resulting in a lack of safety. There's a problem. For this reason, fishing nets that do not expose the copper wires on the surface, and fishing nets that have fine metal wires that are baser than copper and fine copper wires, have been proposed, but in the case of the former, if cotton, etc. adhere to the surface of the fishing net in seawater, it will cause the inner layer to This effect cannot be expected because it inhibits the dissolution of the twisted copper, and the copper reacts with basic substances to produce poorly soluble basic copper. In the latter case, thin metal wires that are more base than copper, such as iron wires, will melt and corrode first and break, so there is a danger of the broken tip as described above, and the disadvantage is that marine organisms will attach to iron wires that do not constitute local batteries. There is. In order to solve these drawbacks, the present invention was developed after intensive investigation into whether there is a copper alloy that has better corrosion resistance than copper, is suitable for antifouling properties, is flexible, and can be twisted into synthetic fibers and fishing nets. This is the completed version of this invention. This invention uses copper-tin in synthetic fibers.
This is an antifouling fishing net characterized by being made by twisting fine wires of phosphorus alloy. Test examples are given below to develop the behavior of each material in seawater. Wire rods with a diameter of 1 mm or 2.5 mm and plate materials of 1 dm 2 were fixed to a rigid PVC frame with a width of 1 m and a length of 2 m with nylon threads at appropriate intervals, and hung vertically from an aquaculture raft 2.2 m below the sea surface. The specimens were left for several years, and samples were periodically taken out to examine the adhesion and corrosion of marine organisms, in other words, the amount of each specimen dissolved in seawater. To measure the amount dissolved, the weight loss of three types of the same sample was measured and the average value was used. The state of adhesion of marine organisms was based on the following criteria. ×: Almost no adhesion. Δ: Slight adhesion, but no practical problem at all. ▲: Adheres to 15-30% of the total surface. ○: A large amount adheres. These results are shown in Table 1.
【表】【table】
【表】
第１表の結果から、亜鉛、スズ、鉛および鉄等
の素材は海洋生物の付着が著しく、防汚漁網には
適さない。銅−亜鉛系合金線は海洋生物の付着に
対し銅線と同様な防汚性を示すが、海水に対する
腐食抵抗、すなわち溶解量が銅線より大きいため
長期間の浸漬には銅線同様不適当と推考される。
銅−スズ−リン系合金線については、スズ含有
量3.5〜8.5％の範囲に0.3％以下のリンを添加した
合金線は銅より２〜３倍の腐食抵抗にすぐれ、且
つ海洋生物付着に対する防汚性がある。
青銅にリンを添加するのは、合金鋳造時の溶湯
の流れの問題と細線に加工するためでリンを０％
にすることはできないが、リンの最低量は0.03％
がよい。
ここにおいて、合成繊維と銅合金線を撚り合せ
て可撓性を有する漁網としての特性を持たせるに
は、銅合金は鋳造しやすく、展延性に富み、細線
まで加工できると共に、最適の細線の直径は0.15
〜0.32mmの範囲がよく、細線の機械特性として引
張強さ42Kgｆ／mm2以下、伸び10％以上の軟質材が
望ましい。この条件に適合する銅−スズ−リン系
合金は試料番号14〜18である。
引張強さが42Kgｆ／mm2以上で、伸びが低い場合
は漁網を構成する合成繊維と合金細線とのしなや
かさを欠くことから、漁網が屈曲されたとき合金
細線に座屈が生じ、漁網の取扱いに支障が生ずる
から好ましくない。これに相当する銅−スズ−リ
ン系合金はスズ10％以上を含有する試料番号19で
ある。
つぎに本考案の実施例について説明する。
直径0.20mmのポリプロピレン線と直径0.18mmの
スズ5.7％の銅−スズ−リン合金線（引張強さは
それぞれ35，40Kgｆ／mm2で、伸び18％以上）を準
備し、合金細線を撚りの最外層とする第２表およ
び第１図に示した三子撚り構成の網糸を作り、巾
１ｍ、長さ２ｍの硬質塩化ビニル枠に縦、横100
mmの目合になるようにナイロン糸で固定し、養殖
用イカダから海面下2.2ｍに垂直に吊し、１ケ年
間放置したのち試料を引き揚げて海洋生物の付着
状態と腐食状態を観察した結果を第３表に示す。[Table] From the results in Table 1, materials such as zinc, tin, lead, and iron are not suitable for antifouling fishing nets because they are heavily contaminated with marine organisms. Copper-zinc alloy wire exhibits the same antifouling properties as copper wire against the adhesion of marine organisms, but its corrosion resistance to seawater, that is, the amount of dissolution is greater than that of copper wire, making it unsuitable for long-term immersion. It is assumed that Regarding copper-tin-phosphorus alloy wires, alloy wires with a tin content of 3.5 to 8.5% and 0.3% or less of phosphorus added have 2 to 3 times better corrosion resistance than copper, and have excellent resistance to marine biofouling. It has a dirty nature. The reason why phosphorus is added to bronze is to solve the problem of molten metal flow during alloy casting and to process it into fine wire.
However, the minimum amount of phosphorus is 0.03%
Good. Here, in order to create a flexible fishing net by twisting synthetic fibers and copper alloy wire, copper alloy is easy to cast, has good malleability, and can be processed into fine wires. Diameter is 0.15
~0.32 mm is preferable, and the mechanical properties of the thin wire are preferably soft materials with a tensile strength of 42 Kgf/mm 2 or less and an elongation of 10% or more. Copper-tin-phosphorus alloys that meet this condition are sample numbers 14 to 18. If the tensile strength is 42Kgf/mm2 or more and the elongation is low, the synthetic fibers and fine alloy wires that make up the fishing net will lack flexibility, so when the fishing net is bent, the fine alloy wires will buckle, causing the fishing net to deteriorate. This is not desirable because it causes problems in handling. A corresponding copper-tin-phosphorus alloy is sample number 19 containing 10% or more of tin. Next, embodiments of the present invention will be described. Prepare a polypropylene wire with a diameter of 0.20 mm and a 5.7% tin copper-tin-phosphorus alloy wire with a diameter of 0.18 mm (tensile strength is 35 and 40 Kgf/mm 2 , respectively, and elongation of 18% or more), and twist the alloy wires. Make a mesh yarn with the triple twist structure shown in Table 2 and Figure 1 to be used as the outermost layer, and place it in a hard vinyl chloride frame with a width of 1 m and a length of 100 mm.
The samples were fixed with nylon threads so that the mesh was 1/2 mm apart, hung vertically from an aquaculture raft 2.2 meters below the sea surface, and left for 1 year.The samples were then withdrawn and observed for the state of adhesion and corrosion of marine organisms. are shown in Table 3.
【表】【table】
【表】【table】
【表】
第３表から、網糸の防汚性において本考案１お
よび２にみられるように網糸の全表面積に対する
銅−ニツケル合金線の表面積の比が３％以下のと
きは防汚性がおとり、40％以上にする必要もない
ことがわかる。
以上の結果から、本考案の防汚性漁網を使用す
るときは銅細線よりも著しく腐食抵抗が大きいた
め、長期間にわたる海水中に浸漬しても海洋生物
の付着が起きず、且つ断線もない。
このため生簀、養殖場に必要な海水の循環が円
滑であり、海水中の溶存酸素が欠乏することがな
いので安全に養殖が行われる。
また定置網も海流によつて押し流される被害も
なく、従来の養殖用漁網のように定期的に付着し
た海洋生物の除去作業が全く不必要となり経済的
に有利である。
このように本考案の防汚性漁網は寿命が飛躍的
に伸ばされたものであつて産業上の利用価値は極
めて大である。[Table] From Table 3, it can be seen that when the ratio of the surface area of the copper-nickel alloy wire to the total surface area of the mesh yarn is 3% or less, as seen in present inventions 1 and 2, the stain resistance of the mesh yarn is 3% or less. It can be seen that there is no need to increase it above 40%. From the above results, when using the antifouling fishing net of the present invention, it has significantly higher corrosion resistance than fine copper wire, so even if it is immersed in seawater for a long period of time, marine organisms will not adhere to it and the wire will not break. . For this reason, the circulation of seawater necessary for fish pens and aquaculture farms is smooth, and there is no shortage of dissolved oxygen in the seawater, so aquaculture can be carried out safely. In addition, fixed nets are not damaged by being washed away by ocean currents, and there is no need to periodically remove attached marine organisms as in conventional fishing nets for aquaculture, which is economically advantageous. As described above, the antifouling fishing net of the present invention has a dramatically extended lifespan and has extremely high industrial utility value.
第１図は本考案の防汚性漁網糸の三子撚りの一
例を示す拡大図であり、１は合成繊維、２は銅−
スズ−リン系合金の細線を示す。
FIG. 1 is an enlarged view showing an example of triple twisting of the antifouling fishing net yarn of the present invention, where 1 is a synthetic fiber and 2 is a copper-
A thin wire of a tin-phosphorus alloy is shown.
Claims (1)
％から成る直径0.1〜0.5mmの銅−スズ−リン系
合金細線と合成繊維とを混撚した網糸におい
て、該銅−スズ−リン合金細線の表面積が網糸
の全表面の３〜40％となるように撚り合せた網
糸を編網してなる防汚性漁網。 (2) 銅−スズ−リン系合金細線の引張強さが42Kg
ｆ／mm2以下、伸びが10％以上の軟質材とするこ
とを特徴とする実用新案登録請求の範囲第(1)項
記載の防汚性漁網。[Scope of claim for utility model registration] (1) Tin content 3.5-8.5% and phosphorus content 0.03-0.3
%, the surface area of the copper-tin-phosphorus alloy fine wires is 3 to 40% of the total surface of the net yarn. A stain-resistant fishing net made of knitted net threads twisted together so that the (2) Tensile strength of copper-tin-phosphorus alloy wire is 42Kg
The antifouling fishing net according to claim (1) of the utility model registration, characterized in that it is made of a soft material with an elongation of f/mm 2 or less and an elongation of 10% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4205280U JPS6222138Y2 (en) | 1980-03-29 | 1980-03-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4205280U JPS6222138Y2 (en) | 1980-03-29 | 1980-03-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56142570U JPS56142570U (en) | 1981-10-27 |
| JPS6222138Y2 true JPS6222138Y2 (en) | 1987-06-05 |
Family
ID=29637432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4205280U Expired JPS6222138Y2 (en) | 1980-03-29 | 1980-03-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6222138Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022244251A1 (en) * | 2021-05-21 | 2022-11-24 | 株式会社原田伸銅所 | Phosphor bronze alloy wire product and fishery article |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6058488B2 (en) * | 2012-07-17 | 2017-01-11 | クレハ合繊株式会社 | Fishing nets and fishing nets |
| JP2021134200A (en) * | 2020-02-25 | 2021-09-13 | 株式会社原田伸銅所 | Article using phosphor bronze linearized product characterized in that reduction of marine resources can be prevented by limiting infection with bacteria and viruses which bring huge impact to aquaculture system in ocean, lakes and rivers by weaving phosphor bronze alloy linearized product into synthetic fibers or the like having completely different tensions for each strand of 3 strands of rope (step of fibers → yarns → strands) which is raw material of aquaculture net using antimicrobial phosphor bronze alloy linearized product (wire) |
-
1980
- 1980-03-29 JP JP4205280U patent/JPS6222138Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022244251A1 (en) * | 2021-05-21 | 2022-11-24 | 株式会社原田伸銅所 | Phosphor bronze alloy wire product and fishery article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56142570U (en) | 1981-10-27 |
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