JP2019085683A - Plastic-like net fabric and method for manufacturing the same - Google Patents

Plastic-like net fabric and method for manufacturing the same Download PDF

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JP2019085683A
JP2019085683A JP2017217236A JP2017217236A JP2019085683A JP 2019085683 A JP2019085683 A JP 2019085683A JP 2017217236 A JP2017217236 A JP 2017217236A JP 2017217236 A JP2017217236 A JP 2017217236A JP 2019085683 A JP2019085683 A JP 2019085683A
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polyamide
mesh
plastic
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sheath
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JP7022976B2 (en
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秀仁 安藤
Hidehito Ando
秀仁 安藤
弘平 池田
Kohei Ikeda
弘平 池田
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Unitika Ltd
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  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)

Abstract

To provide a plastic-like net fabric having high knot strength, which can be handled by winding or folding while the net fabric is plastic-like.SOLUTION: The plastic-like net fabric comprises a net leg 1 and a knot 2 made of fiber-reinforced plastic materials. A base material of the fiber-reinforced plastic material is polyamide 6 and a plurality of copolymer polyamide fibers exist in the polyamide 6. The mass ratio of the polyamide 6 to the copolymer polyamide=1:1 to 1:3. The plastic-like net fabric is characterized in that a core component is constituted of the polyamide 6 and a sheath component is constituted of the copolymer polyamide. The plastic-like net fabric is manufactured by preparing multifilament yarns obtained by bundling a plurality of core-sheath type conjugated filaments in which the mass ratio of the core component to the sheath component is the core component:the sheath component=1:1 to 3:1, then braiding the net fabric using yarns obtained by bundling a plurality of the multifilament yarns, followed by heat treatment.SELECTED DRAWING: Figure 1

Description

本発明は、高強力が要求される産業資材用として用いられるプラスチック様網地及びその製造方法に関するものである。   The present invention relates to a plastic mesh used for industrial materials that require high strength and a method of manufacturing the same.

従来より、メッシュシートの素材として、芯成分がポリエチレンテレフタレートで鞘成分がポリエチレンテレフタレートよりも融点の低いポリエステル共重合体又はポリオレフィンよりなる芯鞘型複合繊維を用いることは知られている。そして、芯鞘型複合繊維よりなるマルチフィラメント糸を経糸及び緯糸に用いて粗目の織物を製織し、熱処理して鞘成分を溶融させ経糸及び緯糸の交点を融着させてメッシュシートとすることが知られている(特許文献1及び2)。ここで、経糸及び緯糸の交点を融着させるのは、目づれを防止するためである。交点は上下からの圧力で無押圧の熱処理であっても融着が生じ、交点外の経糸及び緯糸では当該熱処理では融着しにくく、結局、選択的に交点が融着されている状態となる。メッシュシートは、主として建築工事現場で足場等の仮設構造物の外側構面に張設するもので、飛来落下物等が仮設構造物外に飛び出すのを防止するのに用いるものであるから、交点外の箇所が融着されていなくても差し支えのないものである。   Conventionally, it has been known to use a core-sheath type composite fiber composed of a polyester copolymer or polyolefin having a core component of polyethylene terephthalate and a sheath component having a melting point lower than that of polyethylene terephthalate as a material of the mesh sheet. Then, a coarse woven fabric is woven using multifilament yarns composed of core-sheath composite fibers as warp yarns and weft yarns, and heat treated to melt the sheath component to fuse the intersection points of the warp yarns and weft yarns to form a mesh sheet. It is known (patent documents 1 and 2). Here, the reason why the crossing points of the warp yarns and the weft yarns are fused is to prevent clogging. Even if the heat treatment from the top and bottom is a heat treatment without pressure, fusion occurs even at the intersection, and warps and wefts outside the intersection are difficult to fuse in the heat treatment, eventually resulting in a state in which the intersection is selectively fused. . The mesh sheet is mainly stretched on the outer construction surface of a temporary structure such as a scaffolding at a construction site, and is used to prevent flying falling objects etc. from jumping out of the temporary structure, so the intersection points It does not matter if the outer part is not fused.

しかるに、メッシュシート以外の産業用途において、交点外の箇所をも融着して、さらに高剛性となったプラスチック様のシートが要求されることがある。たとえば、養殖網は、魚と絶えず接触して摩耗しやすいし、魚がシートを噛む切ることもあるため、プラスチック様のものが最適である。かかるプラスチック様シートを得るためには、特許文献1及び2に記載されているシートを押圧しながら熱処理をすればよいと考えられる。しかしながら、かかるシートを押圧して熱処理すると、シートが剛直となり、平板としてしか取り扱うことができず、巻物として取り扱うことが困難になるという欠点があった。   However, in industrial applications other than mesh sheets, plastic-like sheets having higher rigidity can also be required by fusing points outside the intersection points. For example, aquaculture nets are best like plastic because they are subject to constant contact with the fish and are prone to wear and the fish may bite the sheet. In order to obtain such a plastic-like sheet, it is considered that the heat treatment may be performed while pressing the sheets described in Patent Documents 1 and 2. However, when such a sheet is pressed and heat-treated, the sheet becomes rigid, and can only be handled as a flat plate, making it difficult to handle as a roll.

そこで、本発明者は、剛性のあるプラスチック様でありながら、巻回し或いは折り畳んで取り扱うことが可能なプラスチック様網地及びその製造方法を提供することを課題とし、以下の如き先願発明を提案した(特許文献3)。先願発明は、網脚と結節が、ポリエチレンを母体とし、該母体中に複数本のポリエチレンテレフタレート繊維が存在する繊維強化プラスチック材で形成されており、該ポリエチレンと該ポリエチレンテレフタレート繊維の質量比がポリエチレン:ポリエチレンテレフタレート繊維=1:1〜3であることを特徴とするプラスチック様網地及びその製造方法というものである。   Therefore, the present inventors have made it a task to provide a plastic-like mesh which can be handled by winding or folding while being rigid plastic, and a method of manufacturing the same, and propose the invention of the prior application as described below. Patent Document 3). According to the prior application invention, the mesh legs and the knots are formed of a fiber-reinforced plastic material having polyethylene as a matrix and a plurality of polyethylene terephthalate fibers in the matrix, and the mass ratio of the polyethylene to the polyethylene terephthalate fibers is A plastic-like mesh material characterized in that polyethylene: polyethylene terephthalate fiber = 1: 1 to 3 and a method for producing the same.

特開2001−271270号公報Japanese Patent Application Publication No. 2001-271270 特開2009−299209号公報JP, 2009-299209, A 特願2017−137883号Japanese Patent Application No. 2017-137883

しかるに、母体となるポリエチレンをポリアミドAに代え、繊維であるポリエチレンテレフタレート繊維をポリアミドAよりも融点の高いポリアミドB繊維に代えると、引張強力の低下が殆どなく、結節の強度が比較的高くなることを見出した。したがって、本発明の課題は、プラスチック様でありながら、巻回し或いは折り畳んで取り扱うことが可能なプラスチック様網地において、結節強度の高いものを提供することにある。   However, if the parent polyethylene is replaced with polyamide A and the polyethylene terephthalate fiber which is a fiber is replaced with polyamide B fiber having a melting point higher than that of polyamide A, the tensile strength hardly decreases and the knot strength is relatively high. Found out. Therefore, an object of the present invention is to provide a plastic mesh which can be rolled or folded while being plastic-like and has high knot strength.

すなわち、本発明は、網脚と結節が、ポリアミドAを母体とし、該母体中に該ポリアミドAよりも融点の高い複数本のポリアミドB繊維が存在する繊維強化プラスチック材で形成されており、該ポリアミドAと該ポリアミドB繊維の質量比がポリアミドA:ポリアミドB繊維=1〜3:1であることを特徴とするプラスチック様網地に関するものである。   That is, according to the present invention, the mesh legs and the knots are formed of a fiber reinforced plastic material having a polyamide A as a base and a plurality of polyamide B fibers having a melting point higher than that of the polyamide A in the base. The present invention relates to a plastic network characterized in that the mass ratio of polyamide A to said polyamide B fiber is polyamide A: polyamide B fiber = 1 to 3: 1.

また、本発明は、特定の芯鞘型複合繊維を用いて、特定の方法で網脚及び結節を形成し、その後、熱処理することにより、上記した課題を解決したプラスチック様網地を得たものである。すなわち、本発明は、芯成分がポリアミドBで鞘成分が該ポリアミドBよりも融点の低いポリアミドAで構成され、芯成分と鞘成分の質量比が芯成分:鞘成分=1〜3:1である芯鞘型複合長繊維を複数本集束してなるマルチフィラメント糸を準備する工程、前記マルチフィラメント糸を複数本引き揃えてなる糸条を用いて網脚と結節で構成される網地を得る工程及び前記網地を熱処理して、網脚及び結節を構成している糸条中の鞘成分のみを溶融させた後に固化させる工程を備え、母体となった鞘成分中に芯成分が当初の繊維形態を維持した状態で存在している網脚及び結節で構成されているプラスチック様網地の製造方法に関するものである。   In addition, the present invention is to obtain a plastic mesh which solves the above-mentioned problems by forming reticulated legs and knots by a specific method using a specific core-sheath composite fiber and then heat treating it. It is. That is, according to the present invention, the core component is polyamide B and the sheath component is polyamide A having a melting point lower than that of the polyamide B, and the mass ratio of the core component to the sheath component is core: sheath component = 1 to 3: 1. Preparing a multifilament yarn comprising a plurality of core-sheath type composite long fibers collected, obtaining a mesh fabric composed of mesh legs and knots by using a plurality of multifilament yarns aligned and aligned And heat-treating the mesh to melt and solidify only the sheath component in the yarn constituting the mesh legs and knots, wherein the core component is initially contained in the mother sheath component. The present invention relates to a method of manufacturing a plastic-like mesh composed of mesh legs and knots which are present in the form of fiber.

本発明に係るプラスチック様網地は網脚1と結節2で構成されている。網脚1と結節2に囲繞される部位は空隙となっており、目3と称される。この目3の形態は、図1に示すように角目であってもよいし、菱目等の他の形態であってもよい。結節2は、図1に示すように無結節であってもよいし、有結節であってもよい。本発明に係るプラスチック様網地を養殖網等の漁網として使用する場合、無結節であるのが好ましい。有結節であると、魚と接触したときに、魚を傷つける恐れがあるからである。網脚1の径は2〜7mm程度であり、結節2の面積は25〜80mm2程度である。また、目3の面積は5〜20cm2程度である。 The plastic mesh according to the present invention is composed of a mesh leg 1 and a knot 2. A portion surrounded by the mesh legs 1 and the nodules 2 is an air gap and is called an eye 3. The form of the eye 3 may be a square as shown in FIG. 1 or another form such as a diamond. The nodule 2 may be nodeless as shown in FIG. 1 or may be a nodule. In the case of using the plastic net according to the present invention as a fishing net such as aquaculture net, it is preferable to be knotless. Having a nodule is likely to damage the fish when in contact with the fish. The diameter of the mesh leg 1 is about 2 to 7 mm, and the area of the nodule 2 is about 25 to 80 mm 2 . The area of the eye 3 is about 5 to 20 cm 2 .

網脚1と結節2は、ポリアミドAを母体とし、この母体中に複数本のポリアミドB繊維5が存在する繊維強化プラスチック材で形成されている。ポリアミドBはポリアミドAよりも高融点のものである。ポリアミドBとポリアミドAの融点差は、50℃〜80℃程度であるのが好ましい。融点差が50℃未満であると、熱処理した際に、芯鞘型複合繊維の鞘成分であるポリアミドAのみを溶融又は軟化しにくくなり、ポリアミドBで形成されている繊維が当初の形態を維持しにくくなる傾向が生じる。また、融点差が80℃を超えると、芯成分と鞘成分の融点差が大きすぎて、複合溶融紡糸法で芯鞘型複合繊維を得にくくなる傾向が生じる。ポリアミドBとしては、一般的にポリアミド6を採用することができる。また、ポリアミドAとしては、一般的に共重合ポリアミドを採用することができ、具体的には、ポリアミド6、ポリアミド11又はポリアミド12を構成するモノマーを適宜の割合で共重合してなるものを採用することができる。ポリアミドAとポリアミドB繊維5の質量比は、ポリアミドA:ポリアミドB繊維=1:1〜3である。ポリアミドAの質量比がこの範囲より低いと、母体になりにくくなる。一方、ポリアミドBの質量比がこの範囲より低いと、ポリアミドB繊維の径又は数が小さくなり、繊維強化プラスチック材の強力が低下する。   The mesh legs 1 and the knots 2 are formed of a fiber reinforced plastic material having a polyamide A as a base and a plurality of polyamide B fibers 5 present in the base. Polyamide B has a higher melting point than Polyamide A. The melting point difference between the polyamide B and the polyamide A is preferably about 50 ° C. to 80 ° C. When heat treatment is performed, if the melting point difference is less than 50 ° C., it becomes difficult to melt or soften only the polyamide A which is the sheath component of the core-sheath composite fiber, and the fiber formed of polyamide B maintains its original form It tends to be difficult to do. When the melting point difference exceeds 80 ° C., the melting point difference between the core component and the sheath component is too large, which tends to make it difficult to obtain a core-sheath composite fiber by the composite melt spinning method. As the polyamide B, polyamide 6 can generally be employed. In addition, as the polyamide A, a copolymerized polyamide can generally be adopted, and specifically, one obtained by copolymerizing the monomers constituting the polyamide 6, the polyamide 11 or the polyamide 12 in an appropriate ratio is adopted. can do. The mass ratio of the polyamide A to the polyamide B fiber 5 is polyamide A: polyamide B fiber = 1: 1 to 3. When the mass ratio of polyamide A is lower than this range, it becomes difficult to become a matrix. On the other hand, when the mass ratio of polyamide B is lower than this range, the diameter or number of polyamide B fibers becomes small, and the strength of the fiber reinforced plastic material is reduced.

本発明に係るプラスチック様網地を製造するには、まず、芯成分がポリアミドBで鞘成分がポリアミドAで構成された芯鞘型複合長繊維を準備する。この芯鞘型複合長繊維は、芯成分と鞘成分の質量比が芯成分:鞘成分=1〜3:1である。鞘成分であるポリアミドAは、繊維強化プラスチック材の母体となるものである。したがって、鞘成分の質量比がこの範囲より低いと、母体になりにくくなる。また、鞘成分の質量比がこの範囲より高いと、芯成分の径又は数が小さくなり、繊維強化プラスチック材の強力が低下する。かかる芯鞘型複合長繊維は、従来公知の複合溶融紡糸法により製造することができる。芯鞘型複合長繊維の繊度は、4〜20デシテックス程度である。かかる芯鞘型複合長繊維を複数本集束して、マルチフィラメント糸を形成する。集束本数としては、30〜400本程度である。   In order to produce the plastic-like mesh according to the present invention, first, a core-sheath composite long fiber in which the core component is polyamide B and the sheath component is polyamide A is prepared. The core-sheath type composite long fiber has a mass ratio of the core component to the sheath component of core component: sheath component = 1 to 3: 1. The sheath component polyamide A is a matrix of the fiber reinforced plastic material. Therefore, when the mass ratio of the sheath component is lower than this range, it becomes difficult to become a mother. In addition, if the mass ratio of the sheath component is higher than this range, the diameter or number of the core component decreases, and the strength of the fiber-reinforced plastic material decreases. Such core-sheath type composite long fibers can be produced by a conventionally known composite melt spinning method. The fineness of the core-sheath composite long fiber is about 4 to 20 dtex. A plurality of such core-sheath composite long fibers are collected to form a multifilament yarn. The focusing number is about 30 to 400.

次いで、マルチフィラメント糸を複数本引き揃えて糸条を得る。引き揃え本数は、5〜10本程度である。そして、この糸条を用いて、組網機又はラッセル編機に掛けることにより、網脚と結節で構成された網地を得る。組網機に掛ける場合には、結節は無結節であっても有結節であっても差し支えないが、プラスチック様網地を養殖網として使用する場合には、前記した理由により無結節とするのが好ましい。組網機に掛ける際には、1本の糸条を用いてもよいが、2〜4本程度の複数本の糸条を撚り合わせて用いるのが好ましい。複数本の糸条を撚り合わせると、糸条を構成している芯鞘型複合長繊維相互間が密着し、後の熱処理工程を無押圧下で行っても、鞘成分であるポリアミドAが母体となりやすくなる。   Next, a plurality of multifilament yarns are aligned to obtain a yarn. The number of aligned lines is about five to ten. Then, using this yarn, a netting composed of net legs and knots is obtained by hanging on a netting machine or a Russell knitting machine. When using a netting machine, the nodule may be knotless or knotted, but when using a plastic-like meshwork as a culture net, it shall be knotless for the reasons described above. Is preferred. When winding on a braiding machine, although one yarn may be used, it is preferable to use a plurality of yarns of about 2 to 4 in a twisted manner. When a plurality of yarns are twisted together, core-sheath type composite long fibers constituting the yarns are in close contact with each other, and even if the subsequent heat treatment process is performed under no pressure, the sheath component polyamide A is a matrix It becomes easy to become.

得られた網地は、熱処理される。熱処理温度は、鞘成分であるポリアミドAの融点以上であって、具体的には140〜200℃程度である。この熱処理により、糸条を構成している芯鞘型複合長繊維の鞘成分のみが溶融する。熱処理は押圧下でも無押圧下でも差し支えないが、より巻回しやすい柔軟性を与えるためには、無押圧下で行うのが好ましい。熱処理後、冷却すると溶融した鞘成分が固化し、網脚1及び結節2が鞘成分であるポリアミドAを母体とする繊維強化プラスチック材となる。すなわち、網脚1及び結節2が、母体となった鞘成分であるポリアミドA中に、芯成分であるポリアミドB繊維5が当初の繊維形態を維持した状態で存在している繊維強化プラスチック材となったプラスチック様網地が得られるのである。本発明に係るプラスチック様網地は、従来公知の産業資材用として用いることができ、たとえば、定置網、籠網或いは養殖網等の漁網として、又は剥落防止ネットや獣害ネット等の陸上ネットとして、好適に用いることができる。   The resulting mesh is heat treated. The heat treatment temperature is equal to or higher than the melting point of the sheath component polyamide A, and specifically about 140 to 200 ° C. By this heat treatment, only the sheath component of the core-sheath type composite long fiber constituting the yarn is melted. The heat treatment may be performed under pressure or no pressure, but is preferably performed under no pressure in order to provide more flexibility in winding. After heat treatment, when cooled, the melted sheath component solidifies, and the mesh legs 1 and the knots 2 become a fiber reinforced plastic material based on polyamide A which is the sheath component. That is, a fiber-reinforced plastic material in which the core component polyamide B fiber 5 is maintained in the original fiber form in the polyamide A which is the sheath component which becomes the matrix 1 and the mesh legs 1 and the knot 2 A plastic-like mesh is obtained. The plastic-like mesh cloth according to the present invention can be used for conventionally known industrial materials, for example, as fishing nets such as fixed nets, grid nets or aquaculture nets, or as land nets such as anti-slip nets and beast harm nets, It can be used suitably.

本発明に係るプラスチック様網地は、網脚及び結節が、ポリアミドAを母体としポリアミドB繊維を内包している高強力の繊維強化プラスチック材で形成されている。ポリアミドは、ポリエチレンテレフタレートやポリエチレンに比べて、柔軟性があるため、プラスチック様でありながら、巻回しやすく折り畳みやすいものである。また、ポリアミドAとポリアミドBとは相溶性があるため、結節における強度が高くなる。したがって、本発明に係るプラスチック様網地は、使用中には結節で切断されにくく、使用前及び使用後は巻物として搬送等を行うことができ、取り扱いやすいという効果を奏する。   In the plastic-like mesh according to the present invention, the mesh legs and the knots are formed of a high-strength fiber-reinforced plastic material having a polyamide A as a base and containing polyamide B fibers. Polyamide is more flexible than polyethylene terephthalate and polyethylene, so it is easy to wind and fold even though it is plastic-like. In addition, since the polyamide A and the polyamide B are compatible with each other, the strength at the knot becomes high. Therefore, the plastic mesh material according to the present invention is difficult to be cut with a knot during use, and can be transported as a scroll before use and after use, so that it is easy to handle.

実施例1
芯成分が融点225℃のポリアミド6で、鞘成分が融点155℃の共重合ポリアミドにより、芯成分:鞘成分=3:1(質量比)である繊度約7.3デシテックスの芯鞘型複合長繊維を準備した。この芯鞘型複合長繊維を192本集束して、1400デシテックス/192フィラメントのマルチフィラメント糸を得た。このマルチフィラメント糸8本を引き揃えて糸条を得た。この糸条3本を撚りながら(3子撚りで)、組網機に掛けて無結節網地を得た。この無結節網地を、ピンテンター型熱処理装置に導入し、幅方向に張力を掛けながら、175℃の雰囲気下で3分間熱処理した。その後、室温中に放置して冷却することにより、プラスチック様網地を得た。このプラスチック様網地は、網脚の径が約4mmで無結節の面積は約50mm2であり、目は角目であって面積は約10cm2であった。
Example 1
A core / sheath type composite length of about 7.3 dtex in which the core component is polyamide 6 having a melting point of 225 ° C. and the sheath component is a copolymerized polyamide having a melting point of 155 ° C. and the core component: sheath component = 3: 1 (mass ratio) I prepared the fiber. This core-sheath type composite long fiber was collected into 192 to obtain a multifilament yarn of 1400 dtex / 192 filament. The eight multifilament yarns were aligned to obtain a yarn. While twisting these three yarns (with three-child twisting), they were put on a netting machine to obtain a knotless network. This knotless network was introduced into a pin tenter type heat treatment apparatus, and was heat treated for 3 minutes in an atmosphere of 175 ° C. while applying tension in the width direction. Thereafter, it was allowed to cool at room temperature to obtain a plastic mesh. This plastic-like mesh had a mesh leg diameter of about 4 mm and a knotless area of about 50 mm 2 , and the eyes were square with an area of about 10 cm 2 .

参考例1
芯成分が融点260℃のポリエチレンテレフタレートで、鞘成分が融点130℃のポリエチレンにより、芯成分:鞘成分=3:1(質量比)である繊度約8.7デシテックスの芯鞘型複合長繊維を準備した。この芯鞘型複合長繊維を192本集束して、1670デシテックス/192フィラメントのマルチフィラメント糸を得た。このマルチフィラメント糸を用い、熱処理時の雰囲気温度を150℃に変更する他は、実施例1と同一の方法でプラスチック様網地を得た。
Reference Example 1
A core / sheath composite long fiber having a core component of polyethylene terephthalate having a melting point of 260 ° C., a sheath component having a melting point of 130 ° C. and a core component: sheath component = 3: 1 (mass ratio) Got ready. This core-sheath type composite long fiber was collected into 192 to obtain a multifilament yarn of 1670 dtex / 192 filament. A plastic mesh was obtained in the same manner as in Example 1 except that the atmosphere temperature during heat treatment was changed to 150 ° C. using this multifilament yarn.

参考例2
鞘成分を融点160℃の共重合ポリエステルの変更すると共に熱処理時の雰囲気温度を180℃に変更した他は、参考例1と同一の方法でプラスチック様網地を得た。
Reference Example 2
A plastic mesh was obtained in the same manner as in Reference Example 1 except that the copolyester having a melting point of 160 ° C. was used as the sheath component and the atmosphere temperature during heat treatment was changed to 180 ° C.

[結節強度の測定]
実施例1、参考例1及び2で得られたプラスチック様網地から、縦横方向に3目×3目の合計9目となるように、図2に示す如き試験片を採取した。そして、図2中の○印で囲った結節をフックに掛け、矢印方向に引っ張って、結節が破損した際の強力(結節強度)を測定した。測定器としては、島津製作所社製のオートグラフを用い、引張速度10cm/分の条件で測定した。その結果、実施例1のプラスチック様網地は2572Nであり、参考例1のものは2206Nであり、参考例2のものは2096Nであった。
[Measurement of nodule strength]
Test pieces as shown in FIG. 2 were collected from the plastic mesh obtained in Example 1 and Reference Examples 1 and 2 so as to be a total of 9 eyes of 3 eyes × 3 eyes in the vertical and horizontal directions. Then, the nodule surrounded by a circle in FIG. 2 was hooked on a hook and pulled in the direction of the arrow to measure the strength (nodular strength) when the nodule was broken. As a measuring instrument, it measured on conditions of 10 cm / min of tensile speeds, using Shimadzu Corp. make autograph. As a result, the plastic mesh of Example 1 was 2572 N, that of Reference Example 1 was 2206 N, and that of Reference Example 2 was 2096 N.

[引張強力の測定]
実施例1、参考例1及び2で得られたプラスチック様網地から、緯方向網脚の中央部を経方向に平行に切断して、図3に示す如き試験片を採取した。そして、図3中の上下端をチャックで把持して、矢印方向に引っ張って、経方向の網脚が切断するときの強力(引張強力)を測定した。測定器としては、島津製作所社製のオートグラフを用い、チャック間距離25cm及び引張速度30cm/分の条件で測定した。その結果、実施例1のプラスチック様網地は1904Nであり、参考例1のものは2020Nであり、参考例2のものは1713Nであった。
[Measurement of tensile strength]
From the plastic mesh obtained in Example 1 and Reference Examples 1 and 2, the central part of the weft direction mesh leg was cut parallel to the warp direction to obtain a test piece as shown in FIG. Then, the upper and lower ends in FIG. 3 were gripped with a chuck and pulled in the direction of the arrow to measure the strength (tensile strength) when the mesh leg in the longitudinal direction was cut. As a measuring instrument, using an autograph manufactured by Shimadzu Corporation, measurement was performed under the conditions of a distance between chucks of 25 cm and a tensile speed of 30 cm / min. As a result, the plastic mesh of Example 1 was 1904 N, that of Reference Example 1 was 2020 N, and that of Reference Example 2 was 1713 N.

本発明の一例に係るプラスチック様網地を平面視したときの写真である。It is a photograph when planar view of the plastic mesh net which concerns on an example of this invention. 結節強度を測定する際の試験片を状態を示した模式図である。It is the schematic diagram which showed the state in the test piece at the time of measuring knot strength. 引張強力を測定する際の試験片を状態を示した模式図である。It is the schematic diagram which showed the state in the test piece at the time of measuring tensile strength.

1 網脚
2 結節
3 目
1 Netleg 2 Nod 3

Claims (5)

網脚と結節が、ポリアミドAを母体とし、該母体中に該ポリアミドAよりも融点の高い複数本のポリアミドB繊維が存在する繊維強化プラスチック材で形成されており、該ポリアミドAと該ポリアミドB繊維の質量比がポリアミドA:ポリアミドB繊維=1〜3:1であることを特徴とするプラスチック様網地。   The mesh legs and knots are made of a fiber reinforced plastic material having a polyamide A as a base and a plurality of polyamide B fibers having a melting point higher than that of the polyamide A in the base, the polyamide A and the polyamide B A plastic mesh characterized in that a mass ratio of fibers is polyamide A: polyamide B fibers = 1 to 3: 1. 結節は無結節である請求項1記載のプラスチック様網地。   The plastic meshwork according to claim 1, wherein the nodule is knotless. 芯成分がポリアミドBで鞘成分が該ポリアミドBよりも融点の低いポリアミドAで構成され、芯成分と鞘成分の質量比が芯成分:鞘成分=1〜3:1である芯鞘型複合長繊維を複数本集束してなるマルチフィラメント糸を準備する工程、
前記マルチフィラメント糸を複数本引き揃えてなる糸条を用いて網脚と結節で構成される網地を得る工程及び
前記網地を熱処理して、網脚及び結節を構成している糸条中の鞘成分のみを溶融させた後に固化させる工程を備え、
母体となった鞘成分中に芯成分が当初の繊維形態を維持した状態で存在している網脚及び結節で構成されているプラスチック様網地の製造方法。
A core / sheath composite length in which the core component is polyamide B and the sheath component is polyamide A having a melting point lower than that of the polyamide B, and the mass ratio of the core component to the sheath component is core component: sheath component = 1 to 3: 1 Preparing a multifilament yarn in which a plurality of fibers are collected;
A step of obtaining a mesh fabric composed of mesh legs and knots using a yarn formed by aligning a plurality of multifilament yarns, and heat treating the mesh net to form mesh legs and knots Melting and then solidifying only the sheath component of
A method of producing a plastic-like mesh comprising mesh netts and knots, wherein the core component is present in the mother sheath component with the original fiber form maintained.
網脚及び結節が複数本の糸条を撚りながら形成され、熱処理が無押圧下でなされる請求項3記載のプラスチック様網地の製造方法。   The method for producing a plastic-like mesh fabric according to claim 3, wherein the mesh legs and the knots are formed by twisting a plurality of yarns, and the heat treatment is performed under no pressure. 網脚及び結節が組網機によって形成される請求項3記載のプラスチック様網地の製造方法。   The method of claim 3 wherein the mesh legs and knots are formed by a mesh machine.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003310090A (en) * 2002-04-19 2003-11-05 Ube Nitto Kasei Co Ltd Netlike article made of fiber-reinforced thermoplastic resin and method for producing the same
JP2015140504A (en) * 2014-01-30 2015-08-03 ユニチカ株式会社 Heat adhesive continuous glass fiber

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003310090A (en) * 2002-04-19 2003-11-05 Ube Nitto Kasei Co Ltd Netlike article made of fiber-reinforced thermoplastic resin and method for producing the same
JP2015140504A (en) * 2014-01-30 2015-08-03 ユニチカ株式会社 Heat adhesive continuous glass fiber

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