JPH05163616A - Conjugate fiber - Google Patents
Conjugate fiberInfo
- Publication number
- JPH05163616A JPH05163616A JP33703791A JP33703791A JPH05163616A JP H05163616 A JPH05163616 A JP H05163616A JP 33703791 A JP33703791 A JP 33703791A JP 33703791 A JP33703791 A JP 33703791A JP H05163616 A JPH05163616 A JP H05163616A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- layer
- acid
- sheath layer
- fiber
- 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
- Multicomponent Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Farming Of Fish And Shellfish (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水産業用資材特に魚類
を養殖する際に用いられる魚網、ロ−プ等に好適な複合
繊維に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite fiber suitable for fishery materials, particularly fish nets, ropes, etc. used for culturing fish.
【０００２】[0002]
【従来の技術】水産業用資材、特に魚類の養殖用漁網、
ロ−プなどに使用される繊維は、耐磨耗性に優れ、強度
が高いことに加えて、耐腐食性や藻貝類の付着を少なく
する等の防汚性が要求される。そのため、従来、海中生
物の付着が少ない金網を使用したり、また熱可塑性樹脂
繊維でつくられた網やロ−プに錫系化合物を主体とした
防汚剤を塗布したものが用いられており、更には、銅粉
を混練した熱可塑性樹脂繊維によってつくられた漁網、
ロ−プ等も提案されている。2. Description of the Related Art Materials for fisheries, especially fishing nets for aquaculture of fish,
Fibers used for ropes and the like are required to have excellent abrasion resistance and high strength, as well as antifouling properties such as corrosion resistance and adhesion of algae and shellfish. Therefore, conventionally, a wire net with less adhesion of marine organisms is used, or a net or rope made of thermoplastic resin fiber coated with an antifouling agent mainly containing a tin compound is used. Furthermore, a fishing net made of thermoplastic resin fibers kneaded with copper powder,
Rope etc. are also proposed.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記金網は海
水による腐食の進行が早いという欠点がある。一方、錫
系化合物を主体とした防汚剤を塗布する方法は、防汚剤
の毒性が強く、環境汚染の問題があり、塗布や乾燥処理
に人件費が嵩み、高価なものとなる欠点がある。また、
熱可塑性樹脂に銅粉を混練したものは、有効に利用され
るのは表面だけであり、しかも繊維の成形性に難点があ
り、コスト高となる欠点がある。本発明は上記の事情に
鑑み、防汚性に優れ、環境を汚染せず、しかも防汚成分
が有効に利用される、漁網、ロ−プ等に好適な複合繊維
を提供する事を目的とする。However, the above-mentioned wire mesh has a drawback that corrosion by seawater proceeds rapidly. On the other hand, the method of applying an antifouling agent mainly composed of a tin-based compound has a strong toxicity of the antifouling agent and has a problem of environmental pollution, resulting in high labor cost and high cost for coating and drying treatment. There is. Also,
The thermoplastic resin kneaded with copper powder has a drawback that it is effectively used only on the surface, and that the moldability of the fiber is difficult and the cost is high. In view of the above circumstances, the present invention has an object to provide a composite fiber which is excellent in antifouling property, does not pollute the environment, and in which an antifouling component is effectively used, which is suitable for fishing nets, ropes and the like. To do.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記の目的を
達成すべくなされたもので、その要旨は、熱可塑性樹脂
からなる芯層と、生分解性樹脂からなる鞘層とによって
構成された芯鞘型の複合繊維であって、該複合繊維中に
占める鞘層の容量割合が２０〜６０容量％である複合繊
維にある。The present invention has been made to achieve the above-mentioned object, and its gist is constituted by a core layer made of a thermoplastic resin and a sheath layer made of a biodegradable resin. The core-sheath type composite fiber, wherein the volume ratio of the sheath layer in the composite fiber is 20 to 60% by volume.
【０００５】本発明で芯層用樹脂成分として用いられる
熱可塑性樹脂としては、例えばポリエチレン、ポリプロ
ピレン等のポリオレフィン系樹脂、脂肪族もしくは芳香
族ポリアミド系樹脂、芳香族ポリエステル系樹脂、アク
リル系樹脂、ポリビニルアルコール系樹脂等があげられ
る。芯層に用いられる熱可塑性樹脂は本複合繊維の強度
に関与するので、強度の大きな樹脂が望ましい。Examples of the thermoplastic resin used as the resin component for the core layer in the present invention include polyolefin resins such as polyethylene and polypropylene, aliphatic or aromatic polyamide resins, aromatic polyester resins, acrylic resins and polyvinyl resins. Examples thereof include alcohol resins. Since the thermoplastic resin used in the core layer is involved in the strength of the present composite fiber, a resin having high strength is desirable.
【０００６】また、鞘層として用いられる生分解性樹脂
としては、海水、淡水中で生分解を受ける樹脂であれば
如何なる樹脂でも良く、例えば、脂肪族ポリエステル、
多糖類、ポリアミノ酸などが挙げられる。この中で、脂
肪族ポリエステルとしては、ポリカプロラクトンや、乳
酸、グリコール酸、ヒドロキシプロピオン酸、ヒドロキ
シ酪酸、クエン酸、リンゴ酸、酒石酸などのヒドロキシ
ル基含有有機酸単位、マロン酸、コハク酸、アジピン
酸、セバシン酸、ムコン酸などの二価もしくは多価カル
ボン酸単位を含有する、微生物産生あるいは合成ポリエ
ステルもしくはコポリエステルが適する。多糖類として
は、キチン系、キトサン系、プルラン系や澱粉系生分解
樹脂が挙げられる。ポリアミノ酸としてはポリグルタミ
ン酸、ポリアスパラギン酸、ポリジンなどを主鎖に含む
ポリアミノ酸が挙げられる。The biodegradable resin used as the sheath layer may be any resin that undergoes biodegradation in seawater or fresh water, for example, aliphatic polyester,
Examples include polysaccharides and polyamino acids. Among them, as the aliphatic polyester, polycaprolactone, or hydroxyl group-containing organic acid units such as lactic acid, glycolic acid, hydroxypropionic acid, hydroxybutyric acid, citric acid, malic acid, and tartaric acid, malonic acid, succinic acid, and adipic acid. Suitable are microbially produced or synthetic polyesters or copolyesters containing divalent or polyvalent carboxylic acid units such as, sebacic acid, muconic acid and the like. Examples of polysaccharides include chitin-based, chitosan-based, pullulan-based and starch-based biodegradable resins. Examples of the polyamino acid include polyamino acids containing polyglutamic acid, polyaspartic acid, polyzine and the like in the main chain.
【０００７】生分解性樹脂は単独でもよいし、熱可塑性
樹脂を５０重量％未満含有していてもよく、４０重量％
以下が好ましい。５０重量％を超えると防汚効果が低下
し、持続性も短くなる。The biodegradable resin may be used alone or may contain less than 50% by weight of a thermoplastic resin, and 40% by weight.
The following are preferred. If it exceeds 50% by weight, the antifouling effect is lowered and the durability is shortened.
【０００８】これら芯及び鞘層用成分として用いられる
樹脂には、酸化防止剤、熱安定剤、耐候剤、滑剤、染
料、顔料、可塑剤、結晶化速度調節剤等通常の添加剤が
添加されていてもよい。The resins used as the components for the core and sheath layers are added with usual additives such as an antioxidant, a heat stabilizer, a weather resistance agent, a lubricant, a dye, a pigment, a plasticizer and a crystallization rate modifier. May be.
【０００９】複合繊維中に占める鞘層の割合は、２０〜
６０容量％の範囲内にあることが必要であり、特に３０
〜５０容量％が好適である。鞘層の割合が２０容量％未
満では、成形時に層構成が乱れるばかりでなく、防汚効
果の持続が短期である。また、鞘層の割合が６０容量％
を超えると、機械的性能が大きく低下する。The ratio of the sheath layer in the composite fiber is 20 to 20.
It must be in the range of 60% by volume, especially 30
-50% by volume is preferred. When the proportion of the sheath layer is less than 20% by volume, not only the layer structure is disturbed during molding, but also the antifouling effect lasts for a short period of time. Also, the ratio of the sheath layer is 60% by volume.
If it exceeds, the mechanical performance is significantly reduced.
【００１０】本発明の複合繊維は、公知の方法によって
製造する事が出来る。例えば、芯層用と鞘層用樹脂をそ
れぞれ所定の温度に加熱した２台の押出機に充填し、所
定の温度に加熱した２層ノズルから押出し、複合繊維を
紡糸し、所定の温度で冷却した後、所定温度の熱水中で
所定の倍率に延伸して、巻き取る事によって複合繊維を
製造することができる。The composite fiber of the present invention can be manufactured by a known method. For example, the core layer resin and the sheath layer resin are respectively charged into two extruders heated to a predetermined temperature, extruded from a two-layer nozzle heated to a predetermined temperature, the composite fiber is spun, and cooled at a predetermined temperature. After that, the composite fiber can be manufactured by drawing in a predetermined ratio in hot water at a predetermined temperature and winding.
【００１１】[0011]
【実施例】次に、実施例及び比較例を示して本発明をさ
らに詳細に説明する。EXAMPLES Next, the present invention will be described in more detail with reference to Examples and Comparative Examples.
【００１２】実施例１〜４、比較例１〜５ アルカリゲネス・ユートロファス ＡＴＣＣ １７６９
９の好気性培養によって得られた、菌体内に３−ヒドロ
キシ酪酸／３−ヒドロキシ吉草酸共重合体を含有する菌
体を遠心分離により培養液から分離し、乾燥して乾燥菌
体を得た。この乾燥菌体から熱クロロホルムで共重合体
を抽出し、この抽出液をメタノール含有ヘキサンに加え
て共重合体を沈殿させ、この沈殿を濾取、メタノール／
ヘキサンで洗浄後乾燥して３−ヒドロキシ酪酸／３−ヒ
ドロキシ吉草酸共重合体(BIOPET)を得た。芯層用樹脂と
してＭＦＲ1.0 g/10min.(190℃、 荷重2.16kg以下同じ)
、密度０．９５３ｇ／ｃｍ3 の高密度ポリエチレン(HD
PE-1)を用い、鞘層用樹脂として３−ヒドロキシ酪酸／
３−ヒドロキシ吉草酸共重合体(BIOPET)単独又はＭＦＲ
1.2g/10min.，密度０．９５３ｇ／ｃｍ3 の高密度ポリ
エチレン(HDPE-2)とのブレンド物を用い、 複合繊維中に
占める鞘層成分の容量割合を変えて、 径２４０μｍの複
合繊維を製造した。複合繊維の製造は、２台の押出機を
用い、 芯層用樹脂を240 ℃、 鞘層用樹脂を190 ℃で押出
し、200 ℃に加熱した２層ノズルによって複合糸を紡糸
し、30℃の冷水で冷却した後、沸騰水中で９倍に延伸し
た。これら複合繊維の成形性、強度、防汚性の結果を表
１に示す。なお、防汚性は、繊維より構成された網を海
中に６ケ月間放置し、その汚染状態を観察して評価し
た。Examples 1-4, Comparative Examples 1-5 Alcaligenes eutrophus ATCC 1769
The cells containing the 3-hydroxybutyric acid / 3-hydroxyvaleric acid copolymer in the cells obtained by the aerobic culture of Example 9 were separated from the culture solution by centrifugation and dried to obtain dried cells. .. A copolymer was extracted from the dried cells with hot chloroform, the extract was added to hexane containing methanol to precipitate the copolymer, and the precipitate was collected by filtration, and methanol /
After washing with hexane and drying, a 3-hydroxybutyric acid / 3-hydroxyvaleric acid copolymer (BIOPET) was obtained. MFR 1.0 g / 10 min. As core layer resin (190 ° C, load 2.16 kg or less same)
, High density polyethylene with a density of 0.953 g / cm 3 (HD
PE-1) and 3-hydroxybutyric acid /
3-hydroxyvaleric acid copolymer (BIOPET) alone or MFR
1.2 g / 10min., Using a blend of high density polyethylene having a density of 0.953g / cm 3 (HDPE-2 ), by changing the capacity ratio of the sheath layer components occupying in the composite fibers, the composite fibers of diameter 240μm Manufactured. The composite fiber is manufactured by using two extruders to extrude the resin for the core layer at 240 ° C and the resin for the sheath layer at 190 ° C, and spin the composite yarn with a two-layer nozzle heated to 200 ° C. After cooling with cold water, it was stretched 9 times in boiling water. The results of moldability, strength and antifouling property of these composite fibers are shown in Table 1. The antifouling property was evaluated by leaving a net made of fibers in the sea for 6 months and observing the pollution state.
【００１３】[0013]
【表１】 [Table 1]
【００１４】[0014]
【発明の効果】防汚性に優れ、強度が強い複合繊維が得
られた。この複合繊維は水中で生分解を受けるため環境
を汚染せず、又、防汚成分が有効に利用される。EFFECT OF THE INVENTION A composite fiber having excellent antifouling property and high strength was obtained. Since this composite fiber undergoes biodegradation in water, it does not pollute the environment and the antifouling component is effectively used.
Claims (1)
樹脂からなる鞘層によって構成された芯鞘型の複合繊維
であって、該複合繊維中に占める鞘層の割合が２０〜６
０容量％である複合繊維。1. A core-sheath type composite fiber comprising a core layer made of a thermoplastic resin and a sheath layer made of a biodegradable resin, wherein the ratio of the sheath layer in the composite fiber is 20 to 6.
A composite fiber that is 0% by volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33703791A JPH05163616A (en) | 1991-12-19 | 1991-12-19 | Conjugate fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33703791A JPH05163616A (en) | 1991-12-19 | 1991-12-19 | Conjugate fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05163616A true JPH05163616A (en) | 1993-06-29 |
Family
ID=18304846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33703791A Pending JPH05163616A (en) | 1991-12-19 | 1991-12-19 | Conjugate fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05163616A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2323026A (en) * | 1997-03-12 | 1998-09-16 | Wisdom Toothbrushes Limited | Colour-changing, wear-indicating toothbrush filaments |
| KR100467115B1 (en) * | 2001-11-14 | 2005-01-24 | 가부시키가이샤 구라레 | Biodegradable fibers and fabrics, and method for controlling their biodegradability |
| JP2014100220A (en) * | 2012-11-19 | 2014-06-05 | Toray Monofilament Co Ltd | Bristle material for brush, and brush |
-
1991
- 1991-12-19 JP JP33703791A patent/JPH05163616A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2323026A (en) * | 1997-03-12 | 1998-09-16 | Wisdom Toothbrushes Limited | Colour-changing, wear-indicating toothbrush filaments |
| GB2323026B (en) * | 1997-03-12 | 2001-05-09 | Wisdom Toothbrushes Ltd | Colour-changing wear-indicating filaments |
| KR100467115B1 (en) * | 2001-11-14 | 2005-01-24 | 가부시키가이샤 구라레 | Biodegradable fibers and fabrics, and method for controlling their biodegradability |
| JP2014100220A (en) * | 2012-11-19 | 2014-06-05 | Toray Monofilament Co Ltd | Bristle material for brush, and brush |
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