JPH03262430A - Fishing net - Google Patents
Fishing netInfo
- Publication number
- JPH03262430A JPH03262430A JP6287890A JP6287890A JPH03262430A JP H03262430 A JPH03262430 A JP H03262430A JP 6287890 A JP6287890 A JP 6287890A JP 6287890 A JP6287890 A JP 6287890A JP H03262430 A JPH03262430 A JP H03262430A
- Authority
- JP
- Japan
- Prior art keywords
- fishing net
- nets
- polyglycolic acid
- high polymer
- 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.)
- Granted
Links
- 229920000954 Polyglycolide Polymers 0.000 claims abstract description 14
- 239000004633 polyglycolic acid Substances 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 229920001577 copolymer Polymers 0.000 claims abstract description 6
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 5
- 239000004626 polylactic acid Substances 0.000 claims abstract description 4
- 239000000178 monomer Substances 0.000 claims abstract description 3
- 239000000470 constituent Substances 0.000 claims abstract 3
- 229920006237 degradable polymer Polymers 0.000 claims description 12
- RKDVKSZUMVYZHH-UHFFFAOYSA-N 1,4-dioxane-2,5-dione Chemical compound O=C1COC(=O)CO1 RKDVKSZUMVYZHH-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 5
- 244000005700 microbiome Species 0.000 abstract description 2
- 229930182470 glycoside Natural products 0.000 abstract 1
- 150000002338 glycosides Chemical class 0.000 abstract 1
- 241000251468 Actinopterygii Species 0.000 description 6
- 238000003912 environmental pollution Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000009360 aquaculture Methods 0.000 description 4
- 244000144974 aquaculture Species 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 description 4
- UQDJGEHQDNVPGU-UHFFFAOYSA-N serine phosphoethanolamine Chemical compound [NH3+]CCOP([O-])(=O)OCC([NH3+])C([O-])=O UQDJGEHQDNVPGU-UHFFFAOYSA-N 0.000 description 4
- 235000015170 shellfish Nutrition 0.000 description 4
- -1 polyethylene Polymers 0.000 description 3
- VPVXHAANQNHFSF-UHFFFAOYSA-N 1,4-dioxan-2-one Chemical compound O=C1COCCO1 VPVXHAANQNHFSF-UHFFFAOYSA-N 0.000 description 2
- JJTUDXZGHPGLLC-IMJSIDKUSA-N 4511-42-6 Chemical compound C[C@@H]1OC(=O)[C@H](C)OC1=O JJTUDXZGHPGLLC-IMJSIDKUSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 2
- BYEAHWXPCBROCE-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropan-2-ol Chemical compound FC(F)(F)C(O)C(F)(F)F BYEAHWXPCBROCE-UHFFFAOYSA-N 0.000 description 1
- HSQFVBWFPBKHEB-UHFFFAOYSA-N 2,3,4-trichlorophenol Chemical compound OC1=CC=C(Cl)C(Cl)=C1Cl HSQFVBWFPBKHEB-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 244000062175 Fittonia argyroneura Species 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 241000237503 Pectinidae Species 0.000 description 1
- 241000490567 Pinctada Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002794 monomerizing effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 235000020637 scallop Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Landscapes
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は漁網に関し、分解性を有する特殊な素材をもっ
て構成したことに特徴を有するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a fishing net, and is characterized in that it is made of a special degradable material.
（従来技術）
従来、漁網を構成する素材としては安価で強度的に優れ
るポリアミド系、ポリエステル系、ポリエチレン系等の
合成繊維糸が用いられている。(Prior Art) Conventionally, synthetic fiber threads such as polyamide, polyester, and polyethylene fibers, which are inexpensive and have excellent strength, have been used as materials for making fishing nets.
（発明が解決しようとする問題点）
かかる素材より成る漁網は自然の環境下においで極めて
安定であり、長期にわたってその強度を維持するため、
逆に不要時の処分に困難を来し、環境汚染の原因となっ
ている。(Problems to be Solved by the Invention) Fishing nets made of such materials are extremely stable in the natural environment and maintain their strength over a long period of time.
On the other hand, it is difficult to dispose of it when it is no longer needed, causing environmental pollution.
例えば、近海漁業においてはほぼ１シーズンで老朽化し
、その処分が必要となってくるが陸上に放置すると長期
にわたって産業廃棄物として残存し、また、焼却すると
なると炉を傷めたり、大気汚染の原因となる。For example, in coastal fishing, it becomes obsolete after just one season and needs to be disposed of, but if it is left on land it will remain as industrial waste for a long time, and if it is incinerated, it will damage the furnace and cause air pollution. Become.
また、遠洋漁業においては、−航海の漁獲量を高めるた
めしばしば漁網を漁場に投棄してくるが、これとて前記
した性質が災いし５半永久的に海中に残存して海洋汚染
の原因となっている。In addition, in deep-sea fishing, fishing nets are often discarded at fishing grounds in order to increase the catch of the voyage, but this is a disaster because of the above-mentioned characteristics, and they remain in the sea semi-permanently, causing marine pollution. ing.
一方、近年獲る漁業から育てる漁業へと栽培澹業も盛ん
になってきているが、これに使用される網、例えば、生
簀用の網、貝の養殖用の網等においても老朽化に伴う取
り替え、処分が必要であり、また、老朽化しないまでも
養殖している魚介類の成長に合せて新規な網への入れ替
え、網の張り替え作業が必要となってくる。On the other hand, in recent years, the cultivation industry has become popular, with the shift from catching fish to growing fish, but the nets used for this, such as nets for fish preserves and nets for cultivating shellfish, are also being replaced due to aging. In addition, even if the nets are not obsolete, as the fish and shellfish being farmed grow, it becomes necessary to replace them with new nets and reline the nets.
本発明は、かかる点、自然の環境下、特に水分の影響に
よって劣化し、長期的には分解して自然の中に消失して
しまう従来にない新規な漁網を提供したもので従来の放
置に伴う環境汚染の問題を解消でき５また、養殖等にお
いては新規な網への入れ替え、張り替え作業を軽減でき
る特徴を有するものである。In view of this, the present invention provides a novel and unprecedented fishing net that deteriorates under the natural environment, especially under the influence of moisture, and decomposes over a long period of time and disappears into nature. It is possible to solve the problem of environmental pollution caused by the netting5, and it also has the feature that it can reduce the work of replacing with new nets and relining in aquaculture and the like.
（問題を解決するための手段）
しかるに、本発明はその構成において、分解性高分子を
その素材としたこと、かかる分解性高分子をポリグリコ
ール酸、ポリ乳酸、或は、グリコリドと他の分解性高分
子モノマーとの共重合物。(Means for Solving the Problem) However, the present invention has a structure in which a degradable polymer is used as the material, and the degradable polymer is made of polyglycolic acid, polylactic acid, or glycolide and other degradable polymers. A copolymer with a polymeric monomer.
更には、ポリグリコール酸と他の分解性高分子との混合
物で構成したことに特徴を有するものである。Furthermore, it is characterized by being composed of a mixture of polyglycolic acid and other degradable polymers.
（作用）
本発明は、前記のように分解性、特に、水分により分解
する高分子にて漁網を構成したので、水中に放置してお
よそ数カ月〜１年以上経過後にはモノマー化し、最終的
には微生物の餌となって消失してしまうので従来のよう
な放置に伴う環境汚染の問題を生じない。(Function) As described above, in the present invention, the fishing net is made of a polymer that is decomposable, in particular, decomposed by moisture, so that it monomerizes after being left in water for several months to more than a year, and finally Since it becomes food for microorganisms and disappears, there is no problem of environmental pollution caused by leaving it as is the case in the past.
また、かかる性質を利用し、養殖用としては例えば、分
解性の速い小網を内側に、分解性の遅い大綱をその外側
に配置しておけば、或は、ある−定期間経過後新たに小
網の外側に網を張れば、内側の網が先に分解、消失して
しまうので結果として大綱と張り替え、或は、成長した
魚介類と入れ替えたと同じ状況となり、従来の張り替え
、入れ替えに伴う過酷な作業を軽減することができる。In addition, by utilizing this property, for aquaculture, for example, if a small net that decomposes quickly is placed inside and a large net that decomposes slowly is placed outside, or after a certain period of time, a new net can be placed. If a net is placed on the outside of the small net, the inner net will decompose and disappear first, resulting in the same situation as replacing the net with the main net or replacing it with grown fish and shellfish. Harsh work can be alleviated.
尚５本発明を構成するポリグリコール酸は、以下の構造
式で示され、
グリコリドは以下の構造式で示される。Note that polyglycolic acid constituting the present invention is represented by the following structural formula, and glycolide is represented by the following structural formula.
μ
また、ポリ乳酸は、Ｌ体、Ｄ、Ｌ体、Ｄ体等の異性体、
Ｌ体とＤ体の混合ラクチドを原料として化学的に重合、
合成されたものがあるが、以下の構造式で示される。μ In addition, polylactic acid has isomers such as L-form, D-form, L-form, D-form, etc.
Chemical polymerization using mixed lactide of L-form and D-form as raw material,
Some have been synthesized and are shown by the structural formula below.
本発明においては、これらポリグリコール酸。In the present invention, these polyglycolic acids.
グリコリド、Ｌ−ラクチド、Ｄ、Ｌ−ラクチド、Ｄ−ラ
クチド、Ｌ体とＤ体の混合ラクチドを原料として化学的
に重合、合成されたポリラクチドを夫々単独で用い、或
は、これらグリコリドとラクチドの共重合物、混合物と
して、更には、グリコリドとパラジオキサノン２または
カプロラクトン等との混合、共重合物として、更には、
ラクチドとパラジオキサノン、または、カプロラクトン
等との混合、共重合物として用いる。Glycolide, L-lactide, D, L-lactide, D-lactide, polylactide chemically polymerized and synthesized using mixed lactide of L-form and D-form as raw materials are used alone, or a combination of these glycolide and lactide is used. As a copolymer or a mixture, further, as a mixture or copolymer of glycolide and paradioxanone 2 or caprolactone, etc.
Used as a mixture or copolymer of lactide and paradioxanone or caprolactone.
これらの分解性ポリマーは夫々異なった分解性５弾性、
強度を示し、その分子量、重合比率、混合比率によって
も様々な特性を示す。These degradable polymers each have different degradability, 5 elasticity,
It exhibits strength, and exhibits various properties depending on its molecular weight, polymerization ratio, and mixing ratio.
従ってその目的、用途によって適宜これらを選択して用
いることができ１例えば、２力月単位で分解性の異なる
構成とすることができる。Therefore, these can be selected and used as appropriate depending on the purpose and use, and for example, a structure can be created in which the degradability differs in units of two months.
前記したポリマーの性状について一例を挙げると、ポリ
グリコール酸、グリコリドは他のポリマーと比較して分
解速度が速く、約２０℃に維持された水中において数カ
月でモノマー化し、分解してしまうが、漁網として必要
とされる４ｇ／ｄ以上の強度、２５〜４０％の伸度な備
え、透明感、乱反射のない性質も有する６以下、実施例
を挙げて説明する。To give an example of the properties of the polymers mentioned above, polyglycolic acid and glycolide have a faster decomposition rate than other polymers, monomerizing and decomposing in water maintained at about 20°C in a few months, but fishing nets 6 or less, which also has the required strength of 4 g/d or more, elongation of 25 to 40%, transparency, and no diffused reflection, will be described with reference to Examples.
（実施例１）
固有粘度０．８のポリグリコール酸を原料とし、これを
ノズル温度２５０℃で溶融紡糸した後３０℃に急冷し、
９０”Ｃの環境下で６倍に延伸し、次いで０９倍の弛緩
熱処理を行って直径０２２１ミリのモノフィラメント糸
を得た。(Example 1) Using polyglycolic acid with an intrinsic viscosity of 0.8 as a raw material, it was melt-spun at a nozzle temperature of 250°C and then rapidly cooled to 30°C.
A monofilament yarn having a diameter of 0,221 mm was obtained by drawing the yarn 6 times in an environment of 90''C and then subjecting it to a relaxation heat treatment of 09 times.
かかる糸条について、ＪＩＳの測定法に準じてその物性
を測定したところ強度５．８ｇ／ｄ、伸度２７．９％の
性能を有した。When the physical properties of this yarn were measured according to the JIS measurement method, it had a strength of 5.8 g/d and an elongation of 27.9%.
尚、ここでいう固有粘度とは、ヘキサフルオロイソプロ
パツールｌＯに対しトリクロロフェノール７の割合で混
合した溶媒中にポリグリコール酸を０．５ｇ／ｄｉの割
合で添加し、これを２３０℃で分間加熱処理して溶融さ
せた後、３０℃の恒温槽中にて測定したときの粘度であ
り、この値が高いことは、分子量が高いことを示す。In addition, the intrinsic viscosity referred to here means that polyglycolic acid is added at a rate of 0.5 g/di to a solvent mixed at a ratio of 7 parts trichlorophenol to 1 O of hexafluoroisopropanol, and the mixture is heated at 230°C for minutes. This is the viscosity measured in a constant temperature bath at 30° C. after heat treatment and melting, and a high value indicates a high molecular weight.
以上のようにして得た糸条を用い、漁網を編成し、２０
℃の水中に継続して浸漬してその強度低下、分解の変化
を観察したところ、約１週間後には強度が約５０％に半
減し、３週間後においでは強度がほぼゼロとなり、６週
間以上経過後においてはモノマー化して繊維状のものが
消滅してしまった。Using the yarn obtained as described above, a fishing net was knitted and 20
When continuously immersed in water at ℃ and observed changes in strength and decomposition, the strength decreased by half to approximately 50% after about 1 week, and after 3 weeks, the strength decreased to almost zero, and after 6 weeks or more After a period of time, the fibrous material was monomerized and disappeared.
面、かかるポリグリコール酸においては、これによって
糸条な構成する際には、固有粘度０７以上のものを溶融
紡糸後５〜１０倍に熱延伸し、しかる後０．８５〜０．
９５倍の弛緩熱処理を行なうのが好適である。On the other hand, when such polyglycolic acid is to be made into a thread, it is melt-spun with an intrinsic viscosity of 0.7 or higher, then hot-stretched to 5 to 10 times the original viscosity, and then 0.85-0.
It is preferable to perform a 95-fold relaxation heat treatment.
即ち、ポリグリコール酸は通常２３０〜２５０℃で溶融
紡糸されるが、かかる段階において固有粘度がおよそ１
０〜１５％程度低下し、紡糸性、強度を損なう原因とな
る。従って、そのために予め分子量の高い、即ち、固有
粘度０．７以上のポリグリコール酸を用いる必要がある
。That is, polyglycolic acid is usually melt-spun at 230 to 250°C, and at this stage the intrinsic viscosity is approximately 1.
This decreases by about 0 to 15%, causing a loss in spinnability and strength. Therefore, it is necessary to use polyglycolic acid having a high molecular weight, that is, an intrinsic viscosity of 0.7 or more.
また、かかる処理後の糸に対し、更に、結晶化温度以上
、融点以下の熱処理を２時間以上具体的には５８０〜２
００℃で２〜３６時間の熱処理を行なうことは、強度劣
化の程度を遅延させ、或は調整する上において有効な手
段である。In addition, the yarn after such treatment is further heat-treated at a temperature higher than the crystallization temperature and lower than the melting point for 2 hours or more, specifically at a temperature of 580 to 2
Heat treatment at 00° C. for 2 to 36 hours is an effective means for delaying or adjusting the degree of strength deterioration.
（発明の効果）
本発明は以上のように経時的に強度劣化し、最終的には
自然の中で消失してしまう特性を有する。(Effects of the Invention) As described above, the present invention has the characteristic that its strength deteriorates over time and eventually disappears in nature.
ので、老朽化した網の処分も不要となり、海中に投棄し
て、或は陸上に放置して、何れも水分の影響を受けて分
解、消失するため従来のような環境汚染の問題を生じな
い。Therefore, there is no need to dispose of old nets, and they can be dumped into the sea or left on land, where they decompose and disappear under the influence of moisture, so there is no problem of environmental pollution like in the past. .
また、本発明においては、分子量を変えたり異種のポリ
マーとの共重合化、混合により分解性のコントロールが
可能であり、その目的に応じて、性能に変化を持たせる
ことができる利点がある。Furthermore, in the present invention, degradability can be controlled by changing the molecular weight or by copolymerizing or mixing with different types of polymers, and there is an advantage that the performance can be varied depending on the purpose.
例えば、網の張り替え、魚介類の入れ替えが必要な養殖
の場合においては予め分解速度の異なるものを組み合わ
せて網を構成しておけば、網の張り替え、入れ替えに伴
なう余計な作業が省略でき、−例を挙げるならば、帆立
貝、真珠貝等の養殖においては成長の段階に応じて大き
さの異なる網への入替えが必要であるが、かかる構成の
網を用いれば過酷な作業を行なわなくて済む。For example, in the case of aquaculture that requires relining nets and replacing fish and shellfish, if the nets are configured in advance by combining materials with different decomposition rates, the extra work associated with relining and replacing nets can be omitted. , - For example, when cultivating scallops, pearl oysters, etc., it is necessary to change nets to different sizes depending on the stage of growth, but using nets with such a configuration eliminates the harsh work. It's done.
尚、かかる構成において、親水性の加工剤、例えば、有
機、無機の親水性剤をポリマーに添加させることは、水
中での分解性を促進し、不要となった漁網を早期に分解
し、消失させるために有効である。In addition, in such a configuration, adding a hydrophilic processing agent, such as an organic or inorganic hydrophilic agent, to the polymer promotes decomposition in water, causing the unnecessary fishing net to quickly decompose and disappear. It is effective for
また、養殖等、長期間水中に放置するものにおいては、
銅線、銀糸と合撚し、或は銅イオン、銀イオンを発生す
る微粒子をコーティングし、或はポリマー中に練り込ん
で抗菌性を付与した糸条とすれば、藻の付着を防止でき
、酸欠によるトラブルを解消できる。In addition, for products that are left in water for a long period of time, such as for aquaculture,
If the thread is twisted with copper wire or silver thread, coated with fine particles that generate copper ions or silver ions, or kneaded into a polymer to give it antibacterial properties, it can prevent algae from adhering to it. Trouble caused by oxygen deficiency can be resolved.
尚２網を構成する糸の形態としては、モノフィラメト、
マルチフィラメント、合撚、組紐状等その態様は任意で
あり、また、かかる素材を適用して糸、紐、ローブ、網
、シート、フィルム、成型物等を構成し、当該分野にお
いて使い捨て、放置に伴う環境汚染を回避するに必要が
あればこれを用いれば本発明と同一の効果を得ることが
できるものである。In addition, the forms of the threads constituting the two nets include monofilament,
The form can be arbitrary, such as multifilament, twisted, braided, etc., and such materials can be applied to construct threads, strings, lobes, nets, sheets, films, molded products, etc., and are suitable for use in the field of disposable and unattended use. If necessary to avoid the accompanying environmental pollution, it is possible to obtain the same effects as the present invention by using this method.
Claims (1)
る漁網。 ２、分解性高分子がポリグリコール酸であることを特徴
とする請求項１記載の漁網。 ３、分解性高分子がポリ乳酸であることを特徴とする請
求項１記載の漁網。 ４、分解性高分子がグリコリドと他の分解性高分子モノ
マーとの共重合物であることを特徴とする漁網。 ５、分解性高分子がポリグリコール酸と他の分解性高分
子との混合物であることを特徴とする漁網。[Claims] 1. A fishing net characterized in that its constituent material is a degradable polymer. 2. The fishing net according to claim 1, wherein the degradable polymer is polyglycolic acid. 3. The fishing net according to claim 1, wherein the degradable polymer is polylactic acid. 4. A fishing net characterized in that the degradable polymer is a copolymer of glycolide and another degradable polymer monomer. 5. A fishing net characterized in that the degradable polymer is a mixture of polyglycolic acid and other degradable polymers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6287890A JP2855228B2 (en) | 1990-03-13 | 1990-03-13 | Fishing net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6287890A JP2855228B2 (en) | 1990-03-13 | 1990-03-13 | Fishing net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03262430A true JPH03262430A (en) | 1991-11-22 |
| JP2855228B2 JP2855228B2 (en) | 1999-02-10 |
Family
ID=13212966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6287890A Expired - Fee Related JP2855228B2 (en) | 1990-03-13 | 1990-03-13 | Fishing net |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2855228B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06264378A (en) † | 1993-03-11 | 1994-09-20 | Toyobo Co Ltd | Aggregate of biodegradable fiber for civil engineering |
| JP2000226737A (en) * | 1999-02-08 | 2000-08-15 | Toray Ind Inc | Conjugate fiber and its production |
| JP2001336031A (en) * | 1999-12-21 | 2001-12-07 | Ethicon Inc | Synthetic monofilament yarn capable of absorbing and treatable by autoclave, and seed spacer for short distance irradiation therapy |
| JP3735734B2 (en) * | 1993-03-11 | 2006-01-18 | 東洋紡績株式会社 | Biodegradable sanitary fiber assembly |
| EP2224043A1 (en) | 2009-02-27 | 2010-09-01 | Teijin Monofilament Germany GmbH | Use of nets made from biodegradable polyesters for packaging food |
| WO2024071403A1 (en) * | 2022-09-30 | 2024-04-04 | 株式会社クレハ | Protective net for scouring prevention and protective material for scouring prevention |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2022300588A1 (en) | 2021-06-29 | 2024-01-04 | Nichimo Co.,Ltd. | Marine material and production method therefor |
-
1990
- 1990-03-13 JP JP6287890A patent/JP2855228B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06264378A (en) † | 1993-03-11 | 1994-09-20 | Toyobo Co Ltd | Aggregate of biodegradable fiber for civil engineering |
| JP3156812B2 (en) † | 1993-03-11 | 2001-04-16 | 東洋紡績株式会社 | Biodegradable fiber assembly for civil engineering |
| JP3735734B2 (en) * | 1993-03-11 | 2006-01-18 | 東洋紡績株式会社 | Biodegradable sanitary fiber assembly |
| JP2000226737A (en) * | 1999-02-08 | 2000-08-15 | Toray Ind Inc | Conjugate fiber and its production |
| JP2001336031A (en) * | 1999-12-21 | 2001-12-07 | Ethicon Inc | Synthetic monofilament yarn capable of absorbing and treatable by autoclave, and seed spacer for short distance irradiation therapy |
| EP2224043A1 (en) | 2009-02-27 | 2010-09-01 | Teijin Monofilament Germany GmbH | Use of nets made from biodegradable polyesters for packaging food |
| DE102009010939A1 (en) | 2009-02-27 | 2010-09-02 | Teijin Monofilament Germany Gmbh | Use of networks of biodegradable polyesters for food packaging |
| WO2024071403A1 (en) * | 2022-09-30 | 2024-04-04 | 株式会社クレハ | Protective net for scouring prevention and protective material for scouring prevention |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2855228B2 (en) | 1999-02-10 |
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