JP2003253658A - Pollution preventing membrane - Google Patents
Pollution preventing membraneInfo
- Publication number
- JP2003253658A JP2003253658A JP2002061241A JP2002061241A JP2003253658A JP 2003253658 A JP2003253658 A JP 2003253658A JP 2002061241 A JP2002061241 A JP 2002061241A JP 2002061241 A JP2002061241 A JP 2002061241A JP 2003253658 A JP2003253658 A JP 2003253658A
- Authority
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- Japan
- Prior art keywords
- pollution
- woven
- fiber
- biodegradable
- pollution prevention
- 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
Landscapes
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
- Filtering Materials (AREA)
- Biological Depolymerization Polymers (AREA)
- Woven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、海域や河川、湖沼
等で土木工事を行う際に工事現場周囲の水質汚濁を防止
するために使用する汚濁防止膜に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pollution prevention film used for preventing water pollution around construction sites when performing civil engineering works in sea areas, rivers, lakes and marshes.
【０００２】[0002]
【従来の技術】従来より、海域や河川、湖沼等で浚渫や
埋立等の土木工事を行う際には、工事現場の周囲の水質
が汚染されるのを防止するために、汚濁防止膜が使用さ
れている。汚濁防止膜は、フロートと水中のおもりとの
間に展張して工事現場の周囲に張り巡らせて使用するも
のであり、ある程度の機械的強力を必要とすることか
ら、ナイロンやエステル等の合成繊維からなる織編物が
使用されている。2. Description of the Related Art Conventionally, when conducting civil engineering works such as dredging and landfill in sea areas, rivers, lakes, etc., a pollution prevention film is used to prevent the water quality around the construction site from being contaminated. Has been done. The pollution prevention film is used by stretching it between the float and the underwater weight and stretching it around the construction site.Since it requires some mechanical strength, it is a synthetic fiber such as nylon or ester. The woven and knitted fabric is used.
【０００３】汚濁防止膜は、その使用中に資材の表面に
海藻や貝類や軟体動物等の水棲生物が付着する。このよ
うな水棲生物が付着すると、質量が増加して汚濁防止膜
が水没したり、膜が破れて汚濁防止膜としての効果が得
られなくなる。また、使用後の汚濁防止膜は、ほとんど
の場合、地上に引き上げてそのまま産業廃棄物として処
分している。廃棄処理は、通常は埋立処理によって行わ
れるが、その場合にも汚濁防止膜への藻類・貝類の付着
量はできるだけ少ないことが好ましい。During the use of the pollution prevention film, aquatic organisms such as seaweed, shellfish and molluscs adhere to the surface of the material. When such aquatic organisms adhere, the mass increases and the pollution prevention film is submerged in water, or the film is broken and the effect as the pollution prevention film cannot be obtained. In most cases, the used pollution prevention film is pulled up to the ground and disposed of as it is as industrial waste. The disposal treatment is usually carried out by landfill treatment, but in that case as well, it is preferable that the amount of algae / shellfish attached to the pollution prevention membrane is as small as possible.
【０００４】また、使用寿命を延ばし、ひいては廃棄物
量を低減させるため、高圧洗浄水等により藻類、貝類を
落として再度使用することもある。しかしながら、水棲
生物の付着力は強力であって、高圧洗浄水による除去に
は手間がかかり、十分に行えない場合もある。このた
め、汚濁防止膜の使用中にできるだけ水棲生物の付着量
を抑制するとともに、付着した水棲生物はなるべく容易
に脱落させられることが望まれている。Further, in order to extend the service life and eventually reduce the amount of waste, algae and shellfish may be dropped by high-pressure washing water or the like and reused. However, the adhesion of aquatic organisms is strong, and removal with high-pressure washing water is time-consuming and may not be able to be performed sufficiently. For this reason, it is desired that the amount of aquatic organisms attached be suppressed as much as possible during use of the pollution control film, and that the attached aquatic organisms be removed as easily as possible.
【０００５】また、汚濁防止膜は上述のようにナイロン
繊維やエステル繊維などの生分解性を有さない合成繊維
（以下、「非生分解性繊維」と称す。）からなるため、
自然環境中に廃棄してもその化学的安定性のために分解
せず、長期間にわたり土中に残ることとなる。将来的に
は、埋立地の確保がますます困難になり、また、自然環
境や野生動物に悪影響を及ぼすなどの問題が懸念されて
いることから、可能な限り廃棄物量を減らすことが望ま
れている。Further, since the antifouling film is made of biodegradable synthetic fiber such as nylon fiber or ester fiber (hereinafter referred to as "non-biodegradable fiber") as described above,
Even if it is discarded in the natural environment, it will not decompose due to its chemical stability and will remain in the soil for a long time. In the future, securing landfills will become increasingly difficult, and there are concerns about problems such as adversely affecting the natural environment and wildlife. Therefore, it is desirable to reduce the amount of waste as much as possible. There is.
【０００６】[0006]
【発明が解決しようとする課題】本発明は前記問題点を
解決し、生分解性を有し、その使用中には付着した水棲
生物を脱落しやすくする機能を有するとともに、廃棄処
理後には自然環境に悪影響を与えることなく良好に廃棄
処理を行え、廃棄物量を低減できる汚濁防止膜を提供す
ることを目的とする。The present invention solves the above problems, has biodegradability, has a function of facilitating the removal of attached aquatic organisms during its use, and is natural after disposal. It is an object of the present invention to provide a pollution prevention film that can be satisfactorily disposed of without adversely affecting the environment and that can reduce the amount of waste.
【０００７】[0007]
【課題を解決するための手段】本発明者らは上記課題を
解決するために鋭意検討を重ねた結果、本発明に至った
ものである。すなわち本発明は、水辺で土木工事を行う
際に工事現場周囲の水質汚濁を防ぐためにフロートと水
中のおもりとの間に展張して使用する汚濁防止膜であっ
て、織編物によって構成され、前記織編物の少なくとも
一部は生分解性を有する合成繊維からなり、前記生分解
性を有する合成繊維（以下、「生分解性繊維」と称
す。）は、徐々に生分解することによって、付着した水
棲生物を脱落しやすくする機能を有することを特徴とす
る汚濁防止膜を要旨とするものである。The present inventors have achieved the present invention as a result of intensive studies to solve the above problems. That is, the present invention is a pollution prevention film that is used by being spread between a float and an underwater weight in order to prevent water pollution around the construction site when performing civil engineering work on the waterside, and is composed of a woven or knitted fabric. At least a part of the woven or knitted fabric is composed of biodegradable synthetic fibers, and the biodegradable synthetic fibers (hereinafter referred to as "biodegradable fibers") are gradually biodegraded to be attached. The subject matter is a pollution prevention film having a function of facilitating the removal of aquatic organisms.
【０００８】このようなものであると、その使用中に汚
濁防止膜を構成する生分解性繊維が徐々に分解すること
で、付着した水棲生物の接着力を弱めて脱落しやすくで
き、廃棄処理後には埋立処理することで土中の微生物に
よって分解することができ、廃棄物量を低減して環境へ
の負荷の小さいものとすることができる。[0008] With such a structure, the biodegradable fiber constituting the pollution prevention film is gradually decomposed during its use, so that the adhesion force of the attached aquatic organisms can be weakened and the aquatic organisms can be easily removed, and the waste treatment can be performed. Later, by landfilling, it can be decomposed by microorganisms in the soil, and the amount of waste can be reduced to reduce the load on the environment.
【０００９】[0009]
【発明の実施の形態】以下、本発明を詳細に説明する。
本発明における汚濁防止膜は織編物によって構成される
必要がある。このように汚濁防止膜を織編物にて構成す
ることで、寸法安定性や施工性に優れた汚濁防止膜が得
られる。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
The pollution prevention film in the present invention needs to be composed of a woven or knitted fabric. By thus forming the pollution prevention film with a woven or knitted product, a pollution prevention film excellent in dimensional stability and workability can be obtained.
【００１０】また、織編物の少なくとも一部は生分解性
繊維にて構成される必要がある。本発明における生分解
性繊維とは、自然界に存在する微生物の働きによって低
分子化合物に分解され、最終的には水や二酸化炭素など
の無機質に分解される材料からなる繊維を言う。生分解
性繊維は水中に浸漬されてもすぐに分解されるものでは
なく、時間の経過とともに徐々に分解されるものであ
る。通常は、水中で数ヶ月〜１年以上の長期に渡って徐
々に分解していくので、水棲生物が付着しても生分解性
繊維が分解することで水棲生物の足場がなくなって、そ
の一部は自然に脱落していく。また、脱落しない水棲生
物もその付着力が弱まっているため、水中に置いたまま
で、あるいは水中から引き上げての高圧水洗浄等によっ
て水棲生物の除去を容易に行える。また、生分解性繊維
は毒性がないので、海洋等を毒性のある物質で汚染する
こともない。さらに、使用後の汚濁防止膜を埋立処理す
ると、生分解性繊維の残存分については土中のバクテリ
アや水等により分解され、最終的には非生分解性繊維の
みが残るため、廃棄物量を削減できる。また、生分解性
繊維及び非生分解性繊維のいずれも毒性のある物質を含
んでいないので、自然環境を損なうことなく廃棄処理を
行える。At least a part of the woven or knitted material must be composed of biodegradable fibers. The biodegradable fiber in the present invention refers to a fiber made of a material that is decomposed into a low-molecular compound by the action of microorganisms existing in nature and is finally decomposed into an inorganic substance such as water or carbon dioxide. The biodegradable fiber does not decompose immediately when immersed in water, but gradually decomposes over time. Usually, since it gradually decomposes in water over a long period of several months to a year or more, even if aquatic organisms adhere, the biodegradable fiber decomposes and the scaffolding of aquatic organisms disappears. The department will drop out naturally. In addition, since the aquatic organisms that do not fall off have weakened adhesiveness, it is possible to easily remove the aquatic organisms by leaving them in water or by washing them with high pressure water after being pulled out of the water. Moreover, since the biodegradable fiber is not toxic, it does not pollute the ocean with toxic substances. Furthermore, when the pollution prevention film after use is landfilled, the residual amount of biodegradable fiber is decomposed by bacteria and water in the soil, and only non-biodegradable fiber remains in the end, so the amount of waste is reduced. Can be reduced. Further, since neither biodegradable fiber nor non-biodegradable fiber contains a toxic substance, the disposal process can be performed without damaging the natural environment.
【００１１】生分解性繊維は織編物の少なくとも一部を
構成するものであれば良いが、生分解性繊維の割合が多
いほど廃棄物量を削減できるため、廃棄物量の効果的な
低減を考慮すると、生分解性繊維は織編物に対して１０
質量％以上含まれていることが好ましく、３０質量％以
上含まれていることがより好ましく、１００質量％、す
なわち織編物の全てが生分解性を有する合成繊維にて構
成されているとほぼ完全に分解されるため最も好まし
い。ただし、汚濁防止膜は比較的長期にわたって使用さ
れるため、初期の機械的強力が比較的低く、かつ水中に
浸漬中に徐々に分解することで機械的強力がさらに低下
するような場合には、生分解性を有する合成繊維に高強
力の非生分解性繊維を配合して、この高強力の非生分解
性繊維で織編物の強力を補強することが好ましい。生分
解性繊維と非生分解性繊維の組み合わせる方法について
は特に限定されるものではないが、具体的な方法として
は、経緯方向別に異なる糸を用いる方法、合撚する方法
また製織時に引き揃える方法などが挙げられる。The biodegradable fiber may be at least a part of the woven or knitted fabric, but the larger the proportion of the biodegradable fiber is, the more the amount of waste can be reduced. Therefore, in consideration of effective reduction of the amount of waste. , Biodegradable fiber is 10 for woven and knitted fabrics
The content is preferably at least 30% by mass, more preferably at least 30% by mass, and 100% by mass, that is, if the woven or knitted material is entirely composed of biodegradable synthetic fibers Most preferred because it is decomposed into However, since the antifouling film is used for a relatively long period of time, the initial mechanical strength is relatively low, and when the mechanical strength is further reduced by gradually decomposing during immersion in water, It is preferable that high-strength non-biodegradable fibers are blended with biodegradable synthetic fibers to reinforce the strength of the woven or knitted fabric with the high-strength non-biodegradable fibers. The method of combining the biodegradable fiber and the non-biodegradable fiber is not particularly limited, but specific methods include a method of using different yarns in each warp / weft direction, a method of ply twisting, and a method of aligning during weaving. And so on.
【００１２】生分解性繊維を構成する材料としては、ポ
リ乳酸、ポリカプロラクトン、ポリブチレンサクシネー
ト、ポリエチレンサクシネート、ポリグリコール酸、ポ
リアルキレンアルカノエート、ポリβヒドロキシアルカ
ノエートなどの脂肪族ポリエステル、脂肪族系ポリエス
テルと芳香族系ポリエステルとの共重合体、ポリビニル
アルコール等が挙げられ、これらは単独で使用されても
良く、混合あるいは複合物を用いても良い。中でも、生
分解性能や実用性などの点からポリ乳酸系重合体からな
る繊維が特に好適に使用できる。ポリ乳酸系重合体から
なる繊維は、埋立処理を行うと、一定期間が経過した後
に加水分解や微生物等により最終的には無害な水と二酸
化炭素とにほぼ完全に分解されるため好適に使用でき
る。また、ポリ乳酸系重合体は抗菌性も有しており、特
に酸を嫌う水棲生物に対しては、付着防止にも効果があ
る。Examples of the material constituting the biodegradable fiber include aliphatic acids such as polylactic acid, polycaprolactone, polybutylene succinate, polyethylene succinate, polyglycolic acid, polyalkylene alkanoate and poly β-hydroxyalkanoate, and fat. Examples thereof include copolymers of group polyesters and aromatic polyesters, polyvinyl alcohol, and the like. These may be used alone, or may be used as a mixture or a mixture. Of these, fibers made of a polylactic acid-based polymer can be particularly preferably used in terms of biodegradability and practicality. Fibers made of polylactic acid-based polymer are suitable for landfill treatment, and after a certain period of time, they are finally completely decomposed into harmless water and carbon dioxide by hydrolysis, microorganisms, etc. it can. In addition, the polylactic acid-based polymer also has antibacterial properties, and is effective in preventing adhesion, especially to aquatic organisms that dislike acid.
【００１３】ポリ乳酸系重合体としては、ポリ（Ｄ−乳
酸）と、ポリ（Ｌ−乳酸）と、Ｄ−乳酸とＬ−乳酸との
共重合体と、Ｄ−乳酸とヒドロキシカルボン酸との共重
合体あるいはＬ−乳酸とヒドロキシカルボン酸との共重
合体と、Ｄ−乳酸とＬ−乳酸とヒドロキシカルボン酸と
の共重合体とから選ばれるいずれかの重合体あるいはこ
れらのブレンド体が好ましい。ここで、乳酸とヒドロキ
シカルボン酸との共重合体である場合におけるヒロドキ
シカルボン酸としては、グリコール酸、ヒドロキシ酪
酸、ヒドロキシ吉草酸、ヒドロキシペンタン酸、ヒドロ
キシカプロン酸、ヒドロキシヘプタン酸、ヒドロキシオ
クタン酸等が挙げられる。The polylactic acid-based polymer includes poly (D-lactic acid), poly (L-lactic acid), a copolymer of D-lactic acid and L-lactic acid, and D-lactic acid and hydroxycarboxylic acid. A copolymer or a polymer selected from a copolymer of L-lactic acid and hydroxycarboxylic acid and a copolymer of D-lactic acid, L-lactic acid and hydroxycarboxylic acid, or a blend thereof is preferable. . Here, as the hydroxycarboxylic acid in the case of a copolymer of lactic acid and hydroxycarboxylic acid, glycolic acid, hydroxybutyric acid, hydroxyvaleric acid, hydroxypentanoic acid, hydroxycaproic acid, hydroxyheptanoic acid, hydroxyoctanoic acid. Etc.
【００１４】生分解性繊維の繊維形態は特に限定される
ものではなく、単一の重合体からなるものでもよく、２
種類以上の材料からなる複合繊維でもよい。また、繊維
横断面は、通常の丸断面の他にも、芯鞘型複合断面、多
層型複合断面等であっても良い。また、繊度は特に限定
されるものではないが、長期間屋外の水中に浸漬される
こと等を考慮すると、５５０デシテックス以上の比較的
太い繊度の繊維を用いることが好ましい。The fiber form of the biodegradable fiber is not particularly limited and may be composed of a single polymer.
A composite fiber made of more than one kind of material may be used. Further, the fiber cross section may be a core-sheath type composite cross section, a multilayer type composite cross section, etc., in addition to the normal round cross section. Although the fineness is not particularly limited, it is preferable to use fibers having a relatively large fineness of 550 decitex or more in consideration of being immersed in outdoor water for a long time.
【００１５】本発明の汚濁防止膜は、上記の生分解性繊
維単独、あるいは生分解性繊維と非生分解性繊維とを織
編物とすることで得られる。織編物の織編密度は特に限
定されるものではないが、強度や取り扱いの点からその
目付は、３００〜３０００ｇ／ｍ2とすることが好まし
い。また、織編物の厚みとしては０．５〜１０ｍｍ程度
であることが好ましい。The pollution prevention film of the present invention can be obtained by using the above-mentioned biodegradable fiber alone or a woven or knitted product of the biodegradable fiber and the non-biodegradable fiber. The woven or knitted density of the woven or knitted material is not particularly limited, but the basis weight is preferably 300 to 3000 g / m 2 from the viewpoint of strength and handling. The thickness of the woven or knitted material is preferably about 0.5 to 10 mm.
【００１６】また、織編物を構成する繊維には、用途に
応じて、難燃剤、着色防止剤、酸化防止剤、充填材、顔
料などがその特性を損なわない範囲で添加されていても
よい。さらに加えて、織編物あるいは繊維には、必要に
応じて、公知の着色処理などの各種の処理を施すことが
できる。Further, to the fibers constituting the woven or knitted material, a flame retardant, a coloring preventing agent, an antioxidant, a filler, a pigment and the like may be added depending on the application within a range not impairing the characteristics. In addition, the woven or knitted fabric or the fibers can be subjected to various treatments such as known coloring treatments, if necessary.
【００１７】得られた汚濁防止膜は、フロートと水中の
おもりとの間に展張して水辺の土木工事現場の周囲に張
り巡らせて使用する。設置された汚濁防止膜は、織編物
にて構成されているため寸法安定性や施工性に優れてお
り、しかも生分解性を有することから廃棄処理上の問題
がなく、海域や河川及び湖沼等の土木工事を行う際に工
事現場周囲の水質汚濁を防止するために使用される汚濁
防止膜として好適に使用できる。The obtained antifouling film is stretched between the float and the underwater weight and stretched around the site of the civil engineering work on the waterside for use. The installed anti-pollution film is made of woven and knitted fabric, so it has excellent dimensional stability and workability, and because it has biodegradability, there are no problems in disposal processing, and it is possible to use it in sea areas, rivers, lakes and marshes. It can be suitably used as a pollution prevention film used to prevent water pollution around the construction site when carrying out civil engineering work.
【００１８】[0018]
【実施例】以下、実施例により本発明を具体的に説明す
るが、本発明はこれらの実施例のみに限定されるもので
はない。なお、以下の実施例、比較例における各種物性
値の測定方法は、以下のとおりである。
（１）目付（ｇ／ｍ2）：標準状態の汚濁防止膜から長
さ１０ｃｍ、幅１０ｃｍの試験片５点を作成し、平衡水
分にした後、各試験片の質量（ｇ）を秤量し、得られた
値の平均値を単位面積当たりに換算して、目付（ｇ／ｍ
2）とした。
（２）密度（ｇ／ｃｍ3）：ＪＩＳ−Ｋ７１１２に記載
の方法に準じて測定した。
（３）水棲生物付着率（％）：作製した汚濁防止膜を３
０ｃｍ角に切断して試験片を作製した。亜酸化銅系防汚
剤を塗布した鉄製の枠を用意し、前記の試験片をこの枠
に固定して、海水中に６ヶ月間浸漬した。その後、試験
片を引き上げて、試験片の面積のうち藻類・貝類が付着
した部分の面積が占める割合を％で表した。水棲生物付
着率が低いほど水棲生物の脱落容易性に優れているとい
える。
（４）付着残存率（％）：上記の水棲生物付着率を測定
した後の試験片に１．５ＭＰａの高圧水で、５秒間、２
５リットル／分の高圧水洗浄を行い、藻類・貝類を脱落
させて洗浄後の膜の面積のうち藻類・貝類が付着した部
分の面積が占める割合を％で表した。付着残存率が低い
ほど水棲生物の脱落容易性に優れているといえる。
（５）分解性：上記の水棲生物付着率を求める場合と同
様に海水中に６ヶ月浸漬した後の試験片について、高圧
水洗浄を行わないままでコンポスターに投入し、８０℃
で１４日間保持した。１４日後の状態を目視にて観察
し、その外観変化を観察して下記のように評価した。EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. The methods for measuring various physical properties in the following examples and comparative examples are as follows. (1) Unit weight (g / m 2 ): 5 pieces of a test piece having a length of 10 cm and a width of 10 cm were prepared from a pollution control film in a standard state, and after equilibrating water, the mass (g) of each test piece was weighed. , The average value of the obtained values is converted per unit area, and the basis weight (g / m
2 ) (2) Density (g / cm 3 ): Measured according to the method described in JIS-K7112. (3) Adhesion rate of aquatic organisms (%): The prepared pollution prevention film was 3
A test piece was prepared by cutting into a 0 cm square. An iron frame coated with a cuprous oxide antifouling agent was prepared, and the test piece was fixed to this frame and immersed in seawater for 6 months. After that, the test piece was pulled up, and the ratio of the area of the portion to which the algae / shellfish adhered to the area of the test piece was represented in%. It can be said that the lower the rate of attachment of aquatic organisms, the better the ease with which aquatic organisms fall off. (4) Residual rate of adherence (%): High pressure water of 1.5 MPa was applied to the test piece after measuring the aquatic organism adherence rate for 5 seconds for 2 seconds.
A high-pressure water wash of 5 liters / minute was performed to remove algae and shellfish, and the percentage of the area of the membrane after washing that was occupied by the algae-shellfish adhered area was expressed in%. It can be said that the lower the adhesion residual rate is, the more easily the aquatic organisms fall off. (5) Degradability: Similar to the case of obtaining the aquatic organism attachment rate, the test piece after being immersed in seawater for 6 months was put into a poster without washing with high pressure water, and the temperature was set to 80 ° C.
Held for 14 days. The state after 14 days was visually observed, and the appearance change was observed and evaluated as follows.
【００１９】
○：貝殻だけが残った。
△：貝殻と繊維の一部が残った。
×：藻類以外が残った。
実施例１
汚濁防止膜を形成するために、融点が１７０℃の共重合
ポリ乳酸を用いて溶融紡糸により強度が４．０ｃＮ／デ
シテックス、伸度が３０％のポリ乳酸系繊維（１１２０
デシテックス／１９２フィラメント）を得た。この繊維
を８０Ｔ／ｍで４本合撚し、得られた糸条を経緯糸とし
て用い、経糸密度２０本／２．５４ｃｍ、緯糸密度２０
本／２．５４ｃｍとして２／２ななこ組織にて製織し、
目付が６００ｇ／ｍ2、幅２ｍの織物を作製し、この織
物から汚濁防止膜を得た。○: Only the shell remained. Δ: Some shells and some fibers remained. X: Other than algae remained. Example 1 Polylactic acid-based fiber (1120 having a strength of 4.0 cN / decitex and an elongation of 30% was melt-spun by using copolymerized polylactic acid having a melting point of 170 ° C. to form a pollution control film.
Decitex / 192 filament) was obtained. Four strands of this fiber were twisted at 80 T / m, and the resulting yarn was used as a warp yarn.
Weaving with 2/2 nanako weave as books / 2.54 cm,
A fabric having a basis weight of 600 g / m 2 and a width of 2 m was produced, and a pollution control film was obtained from this fabric.
【００２０】得られた汚濁防止膜の物性などを表１に示
す。Table 1 shows the physical properties and the like of the obtained antifouling film.
【００２１】[0021]
【表１】
実施例２
織編物を構成する繊維として、４本合撚した繊維のうち
の１本を伸度が１６％、１１２０デシテックス、９２フ
ィラメント、強度９．５ｃＮ／デシテックスの高強力ポ
リエステル繊維に変えた。そしてそれ以外は実施例１と
同様にして目付が６４０ｇ／ｍ２の織物を作製し、汚濁
防止膜を得た。[Table 1] Example 2 As a fiber constituting the woven or knitted fabric, one of the four twisted fibers was changed to a high-strength polyester fiber having an elongation of 16%, 1120 decitex, 92 filament, and strength of 9.5 cN / decitex. A woven fabric having a basis weight of 640 g / m 2 was produced in the same manner as in Example 1 except for the above, and a pollution control film was obtained.
【００２２】得られた汚濁防止膜の物性などを表１に示
す。実施例１，２は、汚濁防止膜を構成する織物の全部
もしくは一部を生分解性繊維にて形成したため、水棲生
物の付着率が低く水棲生物の脱落容易性に優れており、
洗浄後の水棲生物の付着残存率も低く洗浄性の良いもの
が得られた。ただし、実施例２は一部にポリエステル繊
維が合撚されていたため、水棲生物の付着残存率は実施
例１よりも若干高くなった。また、実施例１は織物が生
分解性繊維のみにて形成されており、実施例２は生分解
性繊維の割合が８０％以上であったため、コンポスト処
理したところその殆どが分解されて廃棄物量の大幅な削
減が図れた。
比較例１
織物を構成する繊維として、伸度が１６％、１１２０デ
シテックス、９２フィラメント、強度９．５ｃＮ／デシ
テックスの高強力ポリエステル繊維を４本合撚した繊維
を用いた。そしてそれ以外は実施例１と同様にして目付
が６４０ｇ／ｍ２の織物を作製し、汚濁防止膜を得た。The physical properties and the like of the obtained antifouling film are shown in Table 1. In Examples 1 and 2, since all or part of the fabric constituting the pollution prevention film was formed of biodegradable fibers, the adhesion rate of aquatic organisms was low and the aquatic organisms were easily dropped off,
After the cleaning, the residual survival rate of aquatic organisms was low and the cleaning property was good. However, in Example 2, the polyester fibers were partly twisted and twisted, and therefore, the residual survival rate of aquatic organisms was slightly higher than that in Example 1. Further, in Example 1, the woven fabric was formed only of biodegradable fibers, and in Example 2, since the proportion of biodegradable fibers was 80% or more, when composting was performed, most of it was decomposed and the amount of waste Was significantly reduced. Comparative Example 1 As a fiber constituting a woven fabric, a fiber obtained by twisting four high-strength polyester fibers having an elongation of 16%, 1120 decitex, 92 filaments and a strength of 9.5 cN / decitex was used. A woven fabric having a basis weight of 640 g / m 2 was produced in the same manner as in Example 1 except for the above, and a pollution control film was obtained.
【００２３】得られた汚濁防止膜の物性などを表１に示
す。比較例１は、汚濁防止膜を構成する織物を非生分解
性繊維のみにて作製したため水棲生物の付着を抑制する
ことができず、洗浄後の水棲生物の付着量も多いもので
あった。また、コンポスト処理しても殆ど分解されてお
らず、廃棄物量の削減が図れなかった。Table 1 shows the physical properties and the like of the obtained pollution prevention film. In Comparative Example 1, since the woven fabric constituting the antifouling film was made of only non-biodegradable fibers, the adhesion of aquatic organisms could not be suppressed, and the amount of aquatic organisms adhered after washing was large. Moreover, even if composting was performed, it was hardly decomposed, and the amount of waste could not be reduced.
【００２４】[0024]
【発明の効果】本発明によれば、汚濁防止膜を織編物に
て構成することで寸法安定性や施工性の良い汚濁防止膜
が得られ、この織編物の少なくとも一部を生分解性繊維
にて構成することで、その使用中に生分解性繊維が徐々
に分解することによって、藻類や貝類などの水棲生物の
付着力が弱まり、水棲生物の脱落容易性や洗浄性の良い
ものが得られる。また、使用後に自然環境中に廃棄した
場合でも、微生物などによって生分解性繊維を分解する
ことができるため、廃棄物量を低減して環境負荷の非常
に小さい汚濁防止膜とすることができる。EFFECTS OF THE INVENTION According to the present invention, by forming the pollution prevention film with a woven or knitted product, a pollution prevention film with good dimensional stability and workability can be obtained. By gradually degrading the biodegradable fiber during its use, the adhesion of aquatic organisms such as algae and shellfish is weakened, and it is easy to remove aquatic organisms and good in washability is obtained. To be Further, even if the biodegradable fiber is decomposed by microorganisms or the like even when it is disposed of in a natural environment after use, it is possible to reduce the amount of waste and provide a pollution prevention film having a very low environmental load.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 迫部 唯行 大阪府大阪市中央区備後町四丁目１番３号 ユニチカファイバー株式会社内 (72)発明者 安井 章雄 大阪府枚方市招提田近３−20 太陽工業株 式会社空間技術研究所内 Ｆターム(参考） 2D025 AA02 4D019 AA03 BA13 BB02 BB08 BC20 CA10 CB04 4L048 AA19 AB11 DA30 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yuko Sakobe 4-3 Bingocho, Chuo-ku, Osaka-shi, Osaka Prefecture Unitika Fiber Co., Ltd. (72) Inventor Akio Yasui 3-20 Shodaikachi, Hirakata City, Osaka Prefecture Taiyo Kogyo Co., Ltd. Shikisha Institute of Space Technology F-term (reference) 2D025 AA02 4D019 AA03 BA13 BB02 BB08 BC20 CA10 CB04 4L048 AA19 AB11 DA30
Claims (2)
の水質汚濁を防ぐためにフロートと水中のおもりとの間
に展張して使用する汚濁防止膜であって、織編物によっ
て構成され、前記織編物の少なくとも一部は生分解性を
有する合成繊維からなり、前記生分解性を有する合成繊
維は、徐々に生分解することによって、付着した水棲生
物を脱落しやすくする機能を有することを特徴とする汚
濁防止膜。1. A pollution prevention film that is used by being spread between a float and an underwater weight to prevent water pollution around the construction site when performing civil engineering works on the waterside, and is composed of a woven or knitted fabric. At least a part of the woven or knitted fabric is made of biodegradable synthetic fiber, and the biodegradable synthetic fiber has a function of facilitating detachment of attached aquatic organisms by gradually biodegrading. A pollution prevention film.
重合体からなることを特徴とする請求項１記載の汚濁防
止膜。2. The pollution control film according to claim 1, wherein the biodegradable synthetic fiber is made of a polylactic acid-based polymer.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2002061241A JP4063555B2 (en) | 2002-03-07 | 2002-03-07 | Pollution prevention membrane |
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| Publication Number | Publication Date |
|---|---|
| JP2003253658A true JP2003253658A (en) | 2003-09-10 |
| JP4063555B2 JP4063555B2 (en) | 2008-03-19 |
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