JP2021070898A - Composite monofilament for fishery material and manufacturing method thereof - Google Patents
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- 239000002131 composite material Substances 0.000 title claims abstract description 48
- 239000000463 material Substances 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 229920005989 resin Polymers 0.000 claims abstract description 63
- 239000011347 resin Substances 0.000 claims abstract description 63
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 33
- 239000011737 fluorine Substances 0.000 claims abstract description 33
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 33
- 230000005484 gravity Effects 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229920002647 polyamide Polymers 0.000 claims description 24
- 239000002033 PVDF binder Substances 0.000 claims description 16
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 16
- 238000009987 spinning Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 description 18
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 12
- 239000010410 layer Substances 0.000 description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- -1 polyethylene Polymers 0.000 description 8
- 238000004804 winding Methods 0.000 description 8
- 239000004677 Nylon Substances 0.000 description 7
- 229920001778 nylon Polymers 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 235000011187 glycerol Nutrition 0.000 description 6
- 238000002074 melt spinning Methods 0.000 description 6
- 239000004952 Polyamide Substances 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 4
- 150000001408 amides Chemical class 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 2
- 229920010237 Novamid® 2030J Polymers 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- GVNWZKBFMFUVNX-UHFFFAOYSA-N Adipamide Chemical compound NC(=O)CCCCC(N)=O GVNWZKBFMFUVNX-UHFFFAOYSA-N 0.000 description 1
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 229920003189 Nylon 4,6 Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000003484 crystal nucleating agent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- PFBWBEXCUGKYKO-UHFFFAOYSA-N ethene;n-octadecyloctadecan-1-amine Chemical compound C=C.CCCCCCCCCCCCCCCCCCNCCCCCCCCCCCCCCCCCC PFBWBEXCUGKYKO-UHFFFAOYSA-N 0.000 description 1
- ZJOLCKGSXLIVAA-UHFFFAOYSA-N ethene;octadecanamide Chemical compound C=C.CCCCCCCCCCCCCCCCCC(N)=O.CCCCCCCCCCCCCCCCCC(N)=O ZJOLCKGSXLIVAA-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 229920013653 perfluoroalkoxyethylene Polymers 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006111 poly(hexamethylene terephthalamide) Polymers 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Abstract
Description
本発明は、水産資材用複合モノフィラメントに関するものである。 The present invention relates to a composite monofilament for marine materials.
釣糸等の水産資材に用いられる繊維の代表的なものとして比重１．００以下（約０．９２〜０．９４）の超高強力ポリエチレン繊維、比重約０．９１〜０．９６のポリオレフィン繊維、比重約１．０１〜１．１５のポリアミド繊維、比重約１．２７〜１．３９のポリエステル繊維等が挙げられる。 As typical fibers used for marine materials such as fishing threads, ultra-high strength polyethylene fibers having a specific gravity of 1.00 or less (about 0.92 to 0.94), polyolefin fibers having a specific gravity of about 0.91 to 0.96, Examples thereof include polyamide fibers having a specific gravity of about 1.01 to 1.15, polyester fibers having a specific gravity of about 1.27 to 1.39, and the like.
高強力ポリエチレン繊維は、一般的な合成繊維と比べて強力が高く様々な分野で使用されているが、欠点として比重が小さいという特性がある。軽いと風が吹くと容易に流され、且つ、水に浮いてしまう。釣糸として用いる場合、風が吹いていると竿〜水面までの間が弛んでしまうと共に水に浮いてしまい弛むためアタリが分からなくなる。漁網として使おうとすると浮力の影響で網が浮こうとするのに加え、水流の影響で揺れが大きくなる。
また単フィラメントが２ｄｔｅｘ以下（１．１３〜１．５１ｄｔｅｘ）と極めて細いフィラメントをマルチフィラメントに加工したものであるため耐摩耗性に乏しく毛羽立ち易いという欠点もある。
High-strength polyethylene fiber has higher strength than general synthetic fibers and is used in various fields, but has a drawback of low specific gravity. If it is light, it will be easily washed away when the wind blows, and it will float on the water. When used as a fishing thread, when the wind is blowing, the area between the rod and the surface of the water will loosen and float on the water, making it difficult to understand the attack. If you try to use it as a fishing net, the net will float due to the influence of buoyancy, and the shaking will increase due to the influence of the water flow.
Further, since the single filament is a multifilament processed into an extremely thin filament having a single filament of 2 dtex or less (1.13 to 1.51 dtex), there is a drawback that the wear resistance is poor and fluffing is likely to occur.
ポリアミド繊維は、柔軟性に優れ、強度を有し、適度な伸びを有することから、水産資材としての基本的性能をバランスよく有するものであり、水産資材として多く用いられている。ただ、比重は、水や海水よりも若干大きいだけであることから、風や水流の影響を受けやすい。 Polyamide fiber has excellent flexibility, strength, and appropriate elongation, and therefore has a good balance of basic performance as a fishery material, and is often used as a fishery material. However, since its specific weight is only slightly higher than that of water or seawater, it is easily affected by wind and water currents.
ポリエステル繊維は、比重も大きく風や水流の影響を受けにくく、定置網等の固定式漁網にはその特性を生かし使用されている。しかし、釣糸として使う場合は、糸が硬く滑り性が良いという長所はあるものの、巻き癖が付きやすく、且つ、摩擦によってカールしやすい傾向にあり、比重は大きいものの、水面〜竿の間でのカールによってアタリが分かりにくいという問題が生じる。 Polyester fiber has a large specific weight and is not easily affected by wind and water currents, and is used for fixed fishing nets such as fixed nets by taking advantage of its characteristics. However, when used as a fishing thread, although it has the advantage of being hard and slippery, it tends to curl easily due to friction, and although it has a large specific gravity, it is between the water surface and the rod. The curl causes a problem that the atari is difficult to understand.
フロロカーボンテグスは比重１．７８と釣糸中で最も大きく、摩耗性にも強いといわれているが、糸が硬く糸癖が付きやすいという欠点がある。 Fluorocarbon Tegs has a specific weight of 1.78, which is the largest among fishing lines and is said to be resistant to wear, but it has the disadvantage that the thread is hard and easily has a thread habit.
また近年、超高強力ポリエチレン繊維と他素材とを組み合わせることにより、比重１．２５〜１．４０とし、風に流されにくく、水中で浮き難い事を特徴にした釣糸（一般に、高比重ＰＥラインとよばれている）が販売されている。この釣糸は、超高強力ポリエチレン繊維の短所である軽さを解消しており、また、強力はナイロン以上ではあるものの、結節部が弱いという欠点を有し、耐摩耗性に弱く毛羽立ち易い点においては、超高強力ポリエチレン繊維と同様であり、素人には扱い難い。 In recent years, by combining ultra-high strength polyethylene fiber and other materials, the specific gravity is 1.25 to 1.40, which makes it difficult for the fishing thread to be swept by the wind and float in water (generally, a high specific gravity PE line). Is called) is on sale. This fishing thread eliminates the lightness that is a disadvantage of ultra-high strength polyethylene fiber, and although it is stronger than nylon, it has the disadvantage that the nodule is weak, and it is weak in abrasion resistance and easily fluffs. Is similar to ultra-high strength polyethylene fiber and is difficult for an amateur to handle.
アジングや、メバリングには比重１．２〜１．３くらいで浮きにくく沈みにくいものが適しているといわれている。ポリエステル繊維に代表される比重１．３５〜１．３９のポリエチレンテレフタレート繊維は比較的沈みやすく根掛かりしやすい。根掛かりした際、ポリエステル繊維の様な伸度が低い素材であると結節部で切れやすい。比重が１．２より小さいと浮きやすくなり好ましくない。また、ポリエステル繊維の中には比重１．２７の脂肪族ポリエステルであるポリ乳酸繊維もあるが、極端に硬く、巻き癖も付きやすく、結節強力も低い為、耐久性を求められる水産資材には好ましくない。 It is said that those with a specific weight of 1.2 to 1.3 that are hard to float and sink are suitable for aging and mevalling. Polyethylene terephthalate fibers having a specific gravity of 1.35 to 1.39, typified by polyester fibers, are relatively easy to sink and take root. When rooted, a material with low elongation, such as polyester fiber, is easily cut at the nodule. If the specific gravity is less than 1.2, it tends to float, which is not preferable. In addition, some polyester fibers are polylactic acid fibers, which are aliphatic polyesters with a specific weight of 1.27, but they are extremely hard, easily curled, and have low nodular strength, so they are suitable for marine products that require durability. Not preferable.
特許文献１は、ポリフッ化ビニリデンと、比重が１．００以下の樹脂成分とを複合紡糸することによって得られた比重が１．１９〜１．７５の芯鞘または海島構造のモノフィラメントが記されている。また、特許文献２の比較例に、海部にポリフッ化ビニリデン、島部にポリアミドを配したものが挙げられており、ポリアミドがポリフッ化ビニリデンと反応して引張強度に劣り、製糸性の評価が良くない。 Patent Document 1 describes a core sheath or a sea-island structure monofilament having a specific gravity of 1.19 to 1.75 obtained by composite spinning of polyvinylidene fluoride and a resin component having a specific gravity of 1.00 or less. There is. Further, as a comparative example of Patent Document 2, a thing in which polyvinylidene fluoride is arranged in the sea part and polyamide is arranged in the island part is mentioned, and the polyamide reacts with polyvinylidene fluoride and is inferior in tensile strength, and the evaluation of yarn-making property is good. Absent.
本発明は、風によって流され難く、水中で浮き難く、取り扱いが容易な水産資材用モノフィラメントを提供することを技術的な課題とする。 It is a technical subject of the present invention to provide a monofilament for marine products that is difficult to be washed away by wind, difficult to float in water, and easy to handle.
本発明者等は、上記課題を達成すべく検討した。その結果、ポリアミド系樹脂とフッ素系樹脂とを特定の比率で複合し、特定の条件で紡糸・冷却・延伸を行うことにより、課題を達しうることを見出し、本発明に到達した。 The present inventors have studied to achieve the above problems. As a result, they have found that a problem can be achieved by combining a polyamide resin and a fluorine resin in a specific ratio and spinning, cooling, and stretching under specific conditions, and have reached the present invention.
すなわち、本発明は、芯鞘型複合モノフィラメントであって、該複合モノフィラメントは、芯部がポリアミド系樹脂、鞘部がフッ素系樹脂によって構成されるか、あるいは、芯部がフッ素系樹脂、鞘部がポリアミド系樹脂により構成されてなり、
該複合モノフィラメントにおいてポリアミド系樹脂が占める割合が４０〜９０体積％であり、
該複合モノフィラメントの比重が１．２〜１．５であることを特徴とする水産資材用モノフィラメントを要旨とするものである。
That is, the present invention is a core-sheath type composite monofilament, in which the core is made of a polyamide resin and the sheath is made of a fluorine-based resin, or the core is made of a fluorine-based resin and a sheath. Is composed of polyamide resin,
The proportion of the polyamide resin in the composite monofilament is 40 to 90% by volume.
The gist is a monofilament for marine products, which is characterized in that the specific gravity of the composite monofilament is 1.2 to 1.5.
以下、本発明について、詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明の水産資材用モノフィラメントは、ポリアミド系樹脂とフッ素系樹脂とが芯鞘型に複合されたものであり、芯部がポリアミド系樹脂、鞘部がフッ素系樹脂によって構成されるか、あるいは、芯部がフッ素系樹脂、鞘部がポリアミド系樹脂により構成されてなる。なお、芯鞘型において、芯部の数は、１つであっても、２〜５個程度の多芯であってもよいが、１つであることが好ましい。また、芯部にポリアミド系樹脂を配したモノフィラメントは、直線強度がより向上する傾向となる。 The monofilament for marine products of the present invention is a composite of a polyamide resin and a fluorine resin in a core-sheath type, and the core is made of a polyamide resin and the sheath is made of a fluorine resin, or The core is made of a fluororesin and the sheath is made of a polyamide resin. In the core-sheath type, the number of cores may be one or a plurality of cores of about 2 to 5, but it is preferably one. Further, the monofilament in which the polyamide resin is arranged in the core tends to have higher linear strength.
また、本発明の複合モノフィラメントの形態としては、上記した芯鞘型複合モノフィラメントに、さらに、鞘部の周囲を覆う層として熱可塑性樹脂からなる最外層を有する３層構造の複合モノフィラメントでもよい。その場合、最外層を構成する熱可塑性樹脂は、芯部と同種の樹脂を用いるとよい。すなわち、芯部がポリアミド系樹脂、鞘部がフッ素系樹脂により構成される場合の最外層は、ポリアミド系樹脂を配したものとなる。また、芯部がフッ素系樹脂、鞘部がポリアミド系樹脂により構成される場合の最外層は、フッ素系樹脂を配したものとなる。 Further, the form of the composite monofilament of the present invention may be a composite monofilament having a three-layer structure having the above-mentioned core-sheath type composite monofilament and an outermost layer made of a thermoplastic resin as a layer covering the periphery of the sheath portion. In that case, the thermoplastic resin constituting the outermost layer may be the same type of resin as the core. That is, when the core portion is made of a polyamide-based resin and the sheath portion is made of a fluorine-based resin, the outermost layer is provided with a polyamide-based resin. Further, when the core portion is made of a fluorine-based resin and the sheath portion is made of a polyamide-based resin, the outermost layer is provided with a fluorine-based resin.
本発明におけるポリアミド系樹脂は、分子内にアミド基を有するものであれば特に限定されるものではなく、例えばナイロン６，ナイロン６６，ナイロン６９，ナイロン４６，ナイロン６１０，ナイロン１０１０，ナイロン１１，ナイロン１２，ナイロン６Ｔ，ナイロン９Ｔ，ポリメタキシレンアジパミドやこれら各成分を共重合したものやブレンドしたもの等が挙げられる。 The polyamide resin in the present invention is not particularly limited as long as it has an amide group in the molecule. For example, nylon 6, nylon 66, nylon 69, nylon 46, nylon 610, nylon 1010, nylon 11, nylon. 12, Nylon 6T, Nylon 9T, Polymethoxylen adipamide, and products obtained by copolymerizing or blending each of these components can be mentioned.
また、本発明におけるフッ素系樹脂は、比重が１．７以上の熱可塑性のフッ素系樹脂であればよく、ポリフッ化ビニリデン、ポリテトラフルオロエチレン、テトラフルオロエチレンとパーフルオロアルコキシエチレンとの共重合体などが挙げられる。なかでも、ポリフッ化ビニリデン系樹脂が最も好ましい。 The fluororesin in the present invention may be a thermoplastic fluororesin having a specific gravity of 1.7 or more, and may be polyvinylidene fluoride, polytetrafluoroethylene, or a copolymer of tetrafluoroethylene and perfluoroalkoxyethylene. And so on. Of these, polyvinylidene fluoride-based resin is most preferable.
本発明において、ポリフッ化ビニリデン系樹脂とは、ポリフッ化ビニリデンホモポリマーまたはフッ化ビニリデンを主成分とするポリフッ化ビニリデンコポリマーを意味する。ポリフッ化ビニリデンコポリマーの具体例としては、フッ化ビニリデンを主成分とし、テトラフルオロエチレン、モノクロロトリフルオロエチレン、フッ化ビニル、ヘキサフルオロプロピレン、パーフルオロイソプロポキシエチレン等を共重合としたコポリマーが挙げられる。また、複合繊維の芯部または鞘部に配するポリフッ化ビニリデン系樹脂としては、異なる２種以上のポリフッ化ビニリデン系樹脂をブレンドしたブレンド体であってもよい。さらには、ポリフッ化ビニリデン系樹脂には、製糸性あるいは糸質物性、透明性等を向上させる目的で、熱安定剤、着色剤、抗酸化剤、可塑剤等を含有させてもよい。 In the present invention, the polyvinylidene fluoride-based resin means a polyvinylidene fluoride homopolymer or a polyvinylidene fluoride copolymer containing vinylidene fluoride as a main component. Specific examples of the polyvinylidene fluoride copolymer include a copolymer containing vinylidene fluoride as a main component and copolymerizing tetrafluoroethylene, monochlorotrifluoroethylene, vinyl fluoride, hexafluoropropylene, perfluoroisopropoxyethylene and the like. .. Further, the polyvinylidene fluoride-based resin to be arranged in the core portion or the sheath portion of the composite fiber may be a blended body in which two or more different kinds of polyvinylidene fluoride-based resins are blended. Furthermore, the polyvinylidene fluoride-based resin may contain a heat stabilizer, a colorant, an antioxidant, a plasticizer, etc. for the purpose of improving the yarn-forming property, the physical characteristics of the thread, the transparency, and the like.
また、本発明の目的を達成しうる範囲であれば、複合モノフィラメントを構成する樹脂に、必要に応じて、例えば結晶核剤、艶消し剤、顔料、耐光剤、耐候剤、酸化防止剤、抗菌剤、香料、熱安定剤、可塑剤、染料、界面活性剤、表面改質剤、各種無機電解質及び有機電解質、微粉体、難燃剤等の各種添加剤を添加することができる。また、得られるモノフィラメントの結節強度を向上させるために、脂肪酸アミド類、例えばメタキシリレンビスステアリルアミド、メタキシリレンビスオレイルアミド、キシレンビスステアリン酸アミド、エチレンビスステアリルアミド、エチレンビスステアリン酸アミド等を添加してもよい。 Further, as long as the object of the present invention can be achieved, the resin constituting the composite monofilament may be used, for example, as a crystal nucleating agent, a matting agent, a pigment, a light resistant agent, a weather resistant agent, an antioxidant, and an antibacterial agent. Various additives such as agents, fragrances, heat stabilizers, plasticizers, dyes, surfactants, surface modifiers, various inorganic electrolytes and organic electrolytes, fine powders, and flame retardants can be added. Further, in order to improve the knot strength of the obtained monofilament, fatty acid amides such as metaxylylene bisstearyl amide, metaxylylene bisstearyl amide, xylene bisstearic acid amide, ethylene bisstearyl amide, ethylene bisstearic acid amide and the like can be used. May be added.
本発明の複合モノフィラメントの比重は、比重１．２〜１．５である。モノフィラメントの比重が１．２〜１．５であることにより、モノフィラメントを構成するポリアミド樹脂とフッ素系樹脂とを芯鞘型形態として複合し、かつ両ポリマーが保有する能力を最大限に発揮することができる。比重が１．２より低いと、ポリアミド繊維と近似する比重であるため、本発明が目的とするものではない。比重が１．５より大きいと、本発明において、実用強度を有する水産資材用モノフィラメントが得られにくい傾向となるため好ましくない。 The specific weight of the composite monofilament of the present invention is 1.2 to 1.5. When the specific gravity of the monofilament is 1.2 to 1.5, the polyamide resin and the fluororesin constituting the monofilament are composited in a core-sheath form, and the ability of both polymers is maximized. Can be done. If the specific gravity is lower than 1.2, the specific gravity is close to that of the polyamide fiber, which is not the object of the present invention. If the specific gravity is larger than 1.5, in the present invention, it tends to be difficult to obtain a monofilament for marine products having practical strength, which is not preferable.
本発明においては、複合モノフィラメントにおいて、ポリアミド系樹脂とフッ素系樹脂とを上の比重の範囲となるように複合するものであり、複合モノフィラメントにおいてポリアミド系樹脂が占める割合は４０〜９０体積％である。複合モノフィラメントにおいて、ポリアミド系樹脂が占める割合が４０体積％以上とすることにより、水産資材用モノフィラメントとして実用以上の強度を発揮し、かつ優れた結節強度を有するものとなる。一方、ポリアミド系樹脂が占める割合が９０体積％以下とすることにより、風に流されにくく、水中で浮き難い水産資材用モノフィラメントを得ることができる。 In the present invention, in the composite monofilament, the polyamide-based resin and the fluorine-based resin are composited so as to be in the above specific gravity range, and the proportion of the polyamide-based resin in the composite monofilament is 40 to 90% by volume. .. By setting the proportion of the polyamide resin in the composite monofilament to 40% by volume or more, the composite monofilament exhibits strength more than practical use as a monofilament for marine materials and has excellent knot strength. On the other hand, when the proportion of the polyamide resin is 90% by volume or less, it is possible to obtain a monofilament for marine products that is difficult to be swept by the wind and difficult to float in water.
本発明の複合モノフィラメントは、ポリアミド系樹脂が占める割合が４０〜９０体積％であることにより、下に記載する結節強力を達成しうるものとなる。すなわち、モノフィラメントの糸径が０．１９ｍｍのものは、結節強力５５０Ｎ／ｍｍ２以上である。糸径が０．２０〜０．３９ｍｍのものは、結節強力５００Ｎ／ｍｍ２以上である。糸径が０．４０〜０．４９ｍｍのものは、結節強力４００Ｎ／ｍｍ２以上である。糸径が０．５０〜０．７９ｍｍのものは、結節強力３００Ｎ／ｍｍ２以上である。糸径が０．８０ｍｍ以上のものは、結節強力２５０Ｎ／ｍｍ２以上である。なお、結節強力の測定方法は、ＪＩＳ Ｌ １０１３ 結節強さに準じて測定したものである。また、本発明の水産資材用複合モノフィラメントの糸径は０．１ｍｍ〜２．０ｍｍ程度がよい。 The composite monofilament of the present invention can achieve the nodular strength described below when the proportion of the polyamide resin is 40 to 90% by volume. That is, a monofilament having a thread diameter of 0.19 mm has a knot strength of 550 N / mm 2 or more. A yarn having a yarn diameter of 0.20 to 0.39 mm has a knot strength of 500 N / mm 2 or more. A yarn having a yarn diameter of 0.40 to 0.49 mm has a knot strength of 400 N / mm 2 or more. A yarn having a yarn diameter of 0.50 to 0.79 mm has a knot strength of 300 N / mm 2 or more. A yarn having a yarn diameter of 0.80 mm or more has a knot strength of 250 N / mm 2 or more. The nodule strength is measured according to JIS L 1013 nodule strength. The yarn diameter of the composite monofilament for marine products of the present invention is preferably about 0.1 mm to 2.0 mm.
本発明の水産資材用複合モノフィラメントは、以下のように製造することによって得られる。まず、芯鞘型複合ノズルを用い、芯部にポリアミド系樹脂、鞘部にフッ素系樹脂を配するか、あるいは、芯部にフッ素系樹脂、鞘部にポリアミド系樹脂を配し、ポリアミド系樹脂の比率が４０〜９０体積％となるように計量して溶融紡糸する。なお、得ようとする複合モノフィラメントの形態が、芯鞘型複合モノフィラメントに、さらに最外層を有する３層構造の複合モノフィラメントの場合は、３層構造となる芯鞘型複合ノズルを用い、芯部にポリアミド系樹脂、鞘部にフッ素系樹脂、最外層にポリアミド系樹脂を配するか、あるいは、芯部にフッ素系樹脂、鞘部にポリアミド系樹脂、最外層にフッ素系樹脂を配し、全体におけるポリアミド系樹脂の比率が４０〜９０体積％となるように計量して溶融紡糸する。 The composite monofilament for marine products of the present invention can be obtained by producing as follows. First, using a core-sheath type composite nozzle, a polyamide-based resin is placed on the core and a fluorine-based resin is placed on the sheath, or a fluorine-based resin is placed on the core and a polyamide-based resin is placed on the sheath, and the polyamide-based resin is placed. Is weighed and melt-spun so that the ratio of the above is 40 to 90% by volume. When the form of the composite monofilament to be obtained is a core-sheath type composite monofilament and a three-layer structure composite monofilament having an outermost layer, a core-sheath type composite nozzle having a three-layer structure is used for the core portion. Polyamide-based resin, fluorine-based resin on the sheath, polyamide-based resin on the outermost layer, or fluorine-based resin on the core, polyamide-based resin on the sheath, and fluorine-based resin on the outermost layer. Weigh and melt-spin the polyamide-based resin so that the ratio is 40 to 90% by volume.
溶融紡糸の際の紡糸速度は、１２〜３０ｍ／分とする。紡糸速度が３０ｍ／分を超えると、粘性の高いフッ素系樹脂は、紡糸速度が高過ぎて、その紡糸速度での塑性変形に追随できず均一に変形できなくなって、延伸方向に太細の斑が生じ、糸径斑および延伸切れの原因となってしまう。一方、紡糸速度が１２ｍ／分未満であると、ポリアミド系樹脂に対して紡糸速度が遅すぎることから、ポリアミド系樹脂において延伸斑（太細）が発生し、糸径斑および延伸切れの原因となる。 The spinning speed during melt spinning is 12 to 30 m / min. When the spinning speed exceeds 30 m / min, the highly viscous fluororesin cannot follow the plastic deformation at the spinning speed and cannot be uniformly deformed, resulting in thick spots in the drawing direction. Will occur, causing uneven thread diameter and breakage of the stretch. On the other hand, if the spinning speed is less than 12 m / min, the spinning speed is too slow with respect to the polyamide resin, so that stretch spots (thickness) occur in the polyamide resin, which causes yarn diameter spots and stretch breakage. Become.
フッ素系樹脂によってモノフィラメントを構成する場合の製造方法は、溶融紡糸時の紡糸速度は、数ｍ／分から１０ｍ／分程度に設定することが一般的である。これは、フッ素系樹脂の溶融粘性が高いことから、紡糸時に延伸斑が生じないようにするために、低い速度で紡糸することが必要とされるためである。しかしながら、本発明においては、紡糸速度を上記特定の範囲とすることにより、フッ素系樹脂とポリアミド系樹脂とを複合したモノフィラメントにおいて、水産資材用として必要な性能を具備させることができたのである。 In the manufacturing method when the monofilament is composed of a fluororesin, the spinning speed at the time of melt spinning is generally set to about several m / min to about 10 m / min. This is because the fluororesin has a high melt viscosity, so that it is necessary to spin at a low speed in order to prevent drawing spots from occurring during spinning. However, in the present invention, by setting the spinning speed within the above-mentioned specific range, the monofilament in which the fluorine-based resin and the polyamide-based resin are combined can be provided with the performance required for marine products.
次いで、溶融紡糸した糸条は、５〜２５℃の浴中で冷却した後、６５〜９５℃の温水浴中で第一段延伸を行う。溶融紡糸した糸条を冷却は、上記した温度の水浴であっても、エチレングリコール浴であってよいが、取り扱い性が良好であることから水浴が好ましい。 Next, the melt-spun yarn is cooled in a bath at 5 to 25 ° C., and then first-stage stretched in a warm water bath at 65 to 95 ° C. The melt-spun yarn may be cooled by a water bath having the above-mentioned temperature or an ethylene glycol bath, but a water bath is preferable because it is easy to handle.
一般に、フッ素系樹脂によってモノフィラメントが構成される場合、溶融紡糸後の冷却は、エチレングリコール浴中（約２０℃）で行い、次いで、第一段延伸を１５０〜１７０℃のグリセリン浴中で行うことが通常に行われている。しかしながら、本発明の複合モノフィラメントを得るためには、溶融紡糸した糸条は、５〜２５℃の水中で冷却した後、６５〜９５℃の温水浴中で第一段延伸を行う。水中冷却を行った後に、特定の温度範囲の温水浴中で第一段延伸を行うことにより、本発明の複合モノフィラメントは、優れた結節強力を有するものとなる。第一段延伸の際、１５０〜１７０℃のグリセリン浴中で行うと、実用的な機械的強力および優れた結節強力を有するモノフィラメントを得ることができない。これは、１５０〜１７０℃のグリセリン浴中において、モノフィラメントを構成するポリアミド系樹脂がスーパードローの状態となり、良好な結晶構造を形成しないためであると考える。なお、グリセリンの温度を１００℃程度に下げると粘性が高すぎて取り扱い性が悪く製造工程の妨げとなり、後工程において糸表面に付着したグリセリンを完全に除去することが困難であることから、第二段延伸以降の熱処理において、フィラメント表面が荒れたものとなり、品質に劣ったものとなる。本発明において、第一段延伸の際の延伸倍率は、３．０〜４．５倍が好ましい。 Generally, when a monofilament is composed of a fluororesin, cooling after melt spinning is performed in an ethylene glycol bath (about 20 ° C.), and then first-stage stretching is performed in a glycerin bath at 150 to 170 ° C. Is normally done. However, in order to obtain the composite monofilament of the present invention, the melt-spun yarn is cooled in water at 5 to 25 ° C. and then first-stage stretched in a warm water bath at 65 to 95 ° C. By performing the first-stage stretching in a warm water bath in a specific temperature range after cooling in water, the composite monofilament of the present invention has excellent nodular strength. When the first-stage stretching is carried out in a glycerin bath at 150 to 170 ° C., it is not possible to obtain a monofilament having practical mechanical strength and excellent knot strength. It is considered that this is because the polyamide resin constituting the monofilament is in a super draw state in a glycerin bath at 150 to 170 ° C. and does not form a good crystal structure. If the temperature of glycerin is lowered to about 100 ° C., the viscosity is too high and the handling is poor, which hinders the manufacturing process, and it is difficult to completely remove the glycerin adhering to the yarn surface in the subsequent process. In the heat treatment after the two-step stretching, the filament surface becomes rough and the quality becomes inferior. In the present invention, the stretching ratio at the time of the first-stage stretching is preferably 3.0 to 4.5 times.
第一段延伸を行った糸条は、次いで、１００〜２５０℃で第二段延伸と弛緩熱処理を行うことによって、本発明の水産資材用複合モノフィラメントを得ることができる。１００〜２５０℃で第二段延伸および弛緩熱処理により、前述した第一段延伸によってポリアミド系樹脂中に形成した結晶構造がさらに配向することによって、実用的な機械的強力および優れた結節強力を有するモノフィラメントを得ることができると考える。第二段延伸の延伸倍率は１．３〜２．０倍が好ましく、さらに必要に応じて第三段延伸を行い、全延伸倍率は５．０〜７．０倍が好ましい。なお、必要に応じて行う第三段延伸は１倍を超え、１．５倍以下がよい。 The yarn obtained by the first-stage stretching can then be subjected to the second-stage stretching and relaxation heat treatment at 100 to 250 ° C. to obtain the composite monofilament for marine products of the present invention. By the second step stretching and relaxation heat treatment at 100 to 250 ° C., the crystal structure formed in the polyamide resin by the first step stretching described above is further oriented, so that it has practical mechanical strength and excellent knot strength. We believe that monofilaments can be obtained. The draw ratio of the second-stage stretching is preferably 1.3 to 2.0 times, and further, the third-stage stretching is performed as necessary, and the total draw ratio is preferably 5.0 to 7.0 times. The third-stage stretching performed as needed is preferably more than 1 time and 1.5 times or less.
第二段延伸および弛緩熱処理は、１００℃であれば温水バス中にて行うとよい。１００℃を超える温度で行う場合は、加熱ヒーターを用いた乾熱雰囲気下で熱延伸するとよい。熱延伸および弛緩熱処理後は、巻取って、本発明の複合モノフィラメントが得られる。 The second-stage stretching and relaxation heat treatment may be performed in a warm water bath at 100 ° C. When the temperature exceeds 100 ° C., it is preferable to heat-stretch in a dry heat atmosphere using a heater. After thermal stretching and relaxation heat treatment, the composite monofilament of the present invention is obtained by winding.
本発明の水産資材用複合モノフィラメントは、フッ素系樹脂とポリアミド系樹脂とが芯鞘複合型に複合されて構成してなる糸であって、水産資材用として好適な比重と機械的強力を有し、かつ優れた結節強力を有し、また、取り扱い性に優れている。 The composite monofilament for marine products of the present invention is a yarn formed by combining a fluorine-based resin and a polyamide-based resin in a core-sheath composite type, and has a specific gravity and mechanical strength suitable for marine materials. It also has excellent knot strength and is easy to handle.
次に、本発明を実施例に基づいて説明する。なお、本発明は、下の実施例に限定されるものではない。また、実施例における特性値等の測定方法は次のとおりである。
（１）繊度（ｄｔｅｘ）
モノフィラメントを一定長（１０ｍ）採取し、その質量を測定し１０，０００ｍ当たりの質量を算出した。
（２）引張強さおよび伸び率（Ｎ／ｍｍ２）
ＪＩＳ Ｌ−１０１３ 引張強さおよび伸び率の標準時試験に準じて、定速伸長形引張試験機（島津製作所オートグラフＤＳＳ−５００）を用い、つかみ間隔２５ｃｍ、引張速度３０ｃｍ／分で測定した。また、試料の糸径を、ミツトヨ製デジマチックマイクロメーターＭＤＨ−２５ＭＢを用いて測定し、前記で得られた引張強さの値と糸径から、断面積（ｍｍ２）当たりの強力を算出した。
（３）モノフィラメントの比重
上記（１）と（２）で求めた繊度と糸径から、下記計算式を用いて比重を算出した。
Next, the present invention will be described based on examples. The present invention is not limited to the examples below. The method for measuring the characteristic values and the like in the examples is as follows.
(1) Fineness (dtex)
A constant length (10 m) of monofilament was sampled, the mass was measured, and the mass per 10,000 m was calculated.
(2) Tensile strength and elongation (N / mm 2 )
According to the standard time test of JIS L-1013 tensile strength and elongation, measurement was performed using a constant speed extension type tensile tester (Shimadzu Autograph DSS-500) at a grip interval of 25 cm and a tensile speed of 30 cm / min. Further, the thread diameter of the sample was measured using a Mitutoyo Digimatic Micrometer MDH-25MB, and the strength per cross-sectional area (mm 2 ) was calculated from the tensile strength value and the thread diameter obtained above. ..
(3) Specific Gravity of Monofilament From the fineness and yarn diameter obtained in (1) and (2) above, the specific gravity was calculated using the following formula.
比重＝繊度（ｇ／１０,０００ｍ）÷（糸半径（ｃｍ）×糸半径（ｃｍ）×π×１０，０００（ｍ）×１００） Specific gravity = fineness (g / 10,000m) ÷ (thread radius (cm) x thread radius (cm) x π x 10,000 (m) x 100)
実施例１
芯部に配するポリアミド系樹脂として、ナイロン６・６６共重合樹脂（ＤＳＭ社製、商品名「ノバミッド２０３０Ｊ」）を準備した。また、鞘部に配するフッ素系樹脂として、ポリフッ化ビニリデン樹脂（３Ｍ社製 商品名「Ｄｙｎｅｏｎ ＰＶＤＦ６０１０／００００」）を準備した。
Example 1
As a polyamide resin to be arranged on the core, a nylon 6.66 copolymer resin (manufactured by DSM, trade name "Novamid 2030J") was prepared. Further, as a fluorine-based resin to be arranged on the sheath, a polyvinylidene fluoride resin (trade name "Dyneon PVDF6010 / 0000" manufactured by 3M Co., Ltd.) was prepared.
ポリアミド系樹脂（芯部）／フッ素系樹脂（鞘部）＝７４．４／２５．６（体積比）となるように計量し、ポリマー温度を２５５℃で１．５ｍｍφ×６Ｈの紡糸口金から、紡糸速度１７．４ｍ／分の条件で溶融紡糸した（芯部の数は１つ）。溶融紡糸した糸条は、速度１７．４ｍ／分で１０℃の水浴中で冷却した後、巻き取ることなく、８５℃の温浴中にて３．２倍で延伸し（第一段延伸）、次いで巻き取ることなく、１９０℃の乾熱雰囲気中で１．８倍で延伸し（第二段延伸）、その後、リラックスさせた後、巻き取った（総延伸倍率５．８倍）。得られた複合モノフィラメントは、糸径０．２８６ｍｍ、繊度８８５ｄｔｅｘ、引張強さ９５１Ｎ／ｍｍ２、伸度２４．８％、結節強度６１８Ｎ／ｍｍ２、比重１．３７であった。 Weighed so that polyamide-based resin (core) / fluorine-based resin (sheath) = 74.4 / 25.6 (volume ratio), and set the polymer temperature at 255 ° C from a 1.5 mmφ x 6H spinneret. Melt spinning was performed under the condition of a spinning speed of 17.4 m / min (the number of cores is one). The melt-spun yarn is cooled in a water bath at 10 ° C. at a speed of 17.4 m / min and then stretched 3.2 times in a warm bath at 85 ° C. without winding (first-stage stretching). Then, without winding, the yarn was stretched 1.8 times in a dry heat atmosphere at 190 ° C. (second stage stretching), then relaxed and then wound (total stretching ratio 5.8 times). The obtained composite monofilament had a yarn diameter of 0.286 mm, a fineness of 885 dtex, a tensile strength of 951 N / mm 2 , an elongation of 24.8%, a knot strength of 618 N / mm 2 , and a specific gravity of 1.37.
実施例２
鞘部に配するポリアミド系樹脂として、ナイロン６・６６共重合樹脂（ＤＳＭ社製、商品名「ノバミッド２０３０Ｊ」）を準備した。また、芯部に配するフッ素系樹脂として、ポリフッ化ビニリデン樹脂（Ｚｅｊｉａｎｇ Ｆｌｕｏｒｉｎｅ Ｃｈｅｍｉｃａｌ Ｎｅｗ Ｍａｔｅｒｉａｌ社製 商品名「Ｚｈｅｆｌｏｎ ＦＬ２００５」）を準備した。
Example 2
As a polyamide resin to be arranged on the sheath, a nylon 6.66 copolymer resin (manufactured by DSM, trade name "Novamid 2030J") was prepared. Further, as a fluorine-based resin to be arranged on the core, a polyvinylidene fluoride resin (trade name “Zheflun FL2005” manufactured by Zejiang Fluorine Chemical New Material Co., Ltd.) was prepared.
ポリアミド系樹脂（鞘部）／フッ素系樹脂（芯部）＝７４．４／２５．６（体積比）となるように計量し、ポリマー温度を２５５℃で１．８ｍｍφ×６Ｈの紡糸口金から、紡糸速度１７．４ｍ／分の条件で溶融紡糸した（芯部の数は１）。溶融紡糸した糸条は、速度１７．４ｍ／分で１０℃の水浴中で冷却した後、巻き取ることなく、８５℃の温浴中にて３．２倍で延伸し（第一段延伸）、次いで巻き取ることなく、２２５℃の乾熱雰囲気中で１．８倍で延伸し（第二段延伸）、その後、リラックスさせた後、巻き取った（総延伸倍率５．８倍）。得られた複合モノフィラメントは、糸径０．２７５ｍｍ、繊度８４５ｄｔｅｘ、引張強さ８４６Ｎ／ｍｍ２、伸度２４．０％、結節強度６１９Ｎ／ｍｍ２、比重１．４２であった。 Weighed so that polyamide-based resin (sheath part) / fluorine-based resin (core part) = 74.4 / 25.6 (volume ratio), and set the polymer temperature at 255 ° C. from a 1.8 mmφ x 6H spinneret. Melt spinning was performed under the condition of a spinning speed of 17.4 m / min (the number of cores is 1). The melt-spun yarn is cooled in a water bath at 10 ° C. at a speed of 17.4 m / min and then stretched 3.2 times in a warm bath at 85 ° C. without winding (first-stage stretching). Then, without winding, it was stretched 1.8 times in a dry heat atmosphere at 225 ° C. (second stage stretching), then relaxed and then wound (total stretching ratio 5.8 times). The obtained composite monofilament had a yarn diameter of 0.275 mm, a fineness of 845 dtex, a tensile strength of 846 N / mm 2 , an elongation of 24.0%, a knot strength of 619 N / mm 2 , and a specific gravity of 1.42.
比較例１
ポリフッ化ビニリデン樹脂（３Ｍ社製 商品名「Ｄｙｎｅｏｎ ＰＶＤＦ６０１２／００００」）のみを用い、単成分のモノフィラメントを製造した。すなわち、ポリマー温度２５０℃で１．１ｍｍφ×６Ｈの紡糸口金から、紡糸速度５．４ｍ／分の条件で溶融紡糸した（単層のフィラメント）。溶融紡糸した糸条は、速度５．４ｍ／分で６０℃のエチレングリコール浴中で冷却した後、巻き取ることなく、１５７℃のグリセリン浴中で延伸し（延伸倍率３．３倍）、さらに巻き取ることなく、１６０℃の乾熱雰囲気中で延伸し（延伸倍率１．４倍）、さらに巻き取ることなく１７０℃の乾熱雰囲気中で延伸し（延伸倍率１．２８倍）、その後、リラックスさせた後、巻き取った（総延伸倍率５．９倍）。得られたモノフィラメントは、糸径０．３０５ｍｍ、繊度１３１４ｄｔｅｘ、引張強さ８６５Ｎ／ｍｍ２、切断伸度２７．０％、結節強度４６１Ｎ／ｍｍ２、比重１．７９であった。
Comparative Example 1
A single component monofilament was produced using only polyvinylidene fluoride resin (trade name "Dyneon PVDF6012 / 0000" manufactured by 3M). That is, melt spinning was performed from a spinning spout of 1.1 mmφ × 6H at a polymer temperature of 250 ° C. under the condition of a spinning speed of 5.4 m / min (single layer filament). The melt-spun yarn is cooled in an ethylene glycol bath at 60 ° C. at a speed of 5.4 m / min, then stretched in a glycerin bath at 157 ° C. without winding (drawing ratio 3.3 times), and further. Stretching in a dry heat atmosphere at 160 ° C. without winding (stretching ratio 1.4 times), further stretching in a dry heat atmosphere at 170 ° C. without winding (stretching ratio 1.28 times), and then. After relaxing, it was wound up (total draw ratio 5.9 times). The obtained monofilament had a yarn diameter of 0.305 mm, a fineness of 1314 dtex, a tensile strength of 865 N / mm 2 , a cutting elongation of 27.0%, a knot strength of 461 N / mm 2 , and a specific gravity of 1.79.
実施例１および２のモノフィラメントは、水産資材として良好に用いうる比重を有するものであって、実用的な引張強さを有し、また、結節強度は優れたものであった。
The monofilaments of Examples 1 and 2 had a specific gravity that could be used satisfactorily as a marine product material, had a practical tensile strength, and had an excellent nodular strength.
Claims (6)
該複合モノフィラメントにおいてポリアミド系樹脂が占める割合が４０〜９０体積％であり、
該複合モノフィラメントの比重が１．２〜１．５であることを特徴とする水産資材用モノフィラメント。 A core-sheath type composite monofilament, in which the core is made of a polyamide resin and the sheath is made of a fluorine-based resin, or the core is made of a fluorine-based resin and the sheath is made of a polyamide resin. Being done
The proportion of the polyamide resin in the composite monofilament is 40 to 90% by volume.
A monofilament for marine products, wherein the composite monofilament has a specific gravity of 1.2 to 1.5.
芯部がポリアミド系樹脂、鞘部がフッ素系樹脂、最外層がポリアミド系樹脂によって構成されるか、あるいは、芯部がフッ素系樹脂、鞘部がポリアミド系樹脂、最外層がフッ素系樹脂により構成されてなり、
該複合モノフィラメントにおいてポリアミド系樹脂が占める割合が４０〜９０体積％であり、
該複合モノフィラメントの比重が１．２〜１．５であることを特徴とする水産資材用モノフィラメント。 It is a composite monofilament, and the form of the filament is a composite monofilament having a three-layer structure having a core portion, a sheath portion, and an outermost layer.
The core is made of polyamide resin, the sheath is made of fluorine resin, and the outermost layer is made of polyamide resin, or the core is made of fluorine resin, the sheath is made of polyamide resin, and the outermost layer is made of fluorine resin. Being done
The proportion of the polyamide resin in the composite monofilament is 40 to 90% by volume.
A monofilament for marine products, wherein the composite monofilament has a specific gravity of 1.2 to 1.5.
The composite for marine products according to claim 5, wherein the first-stage stretching ratio in a warm water bath is 3.0 to 4.5 times, and the total stretching ratio is 5.0 to 7.0 times. Manufacturing method of monofilament.
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