JPH09119020A - Polyvinylidene fluoride-based monofilament of sheath-core type - Google Patents
Polyvinylidene fluoride-based monofilament of sheath-core typeInfo
- Publication number
- JPH09119020A JPH09119020A JP27399495A JP27399495A JPH09119020A JP H09119020 A JPH09119020 A JP H09119020A JP 27399495 A JP27399495 A JP 27399495A JP 27399495 A JP27399495 A JP 27399495A JP H09119020 A JPH09119020 A JP H09119020A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- sheath
- monofilament
- core
- polyvinylidene fluoride
- 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
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- Multicomponent Fibers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、釣り糸や漁網等の
水産資材用に適した強度特性、特に結節強度及び曲げ剛
性に優れたポリ弗化ビニリデン系モノフィラメントに関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyvinylidene fluoride monofilament excellent in strength characteristics suitable for marine materials such as fishing lines and fishing nets, particularly in knot strength and bending rigidity.
【０００２】[0002]
【従来の技術】ポリ弗化ビニリデン（ＰＶＤＦ）系モノ
フィラメントは、比重が大きく、耐候性に優れ、屈折率
が水に近く、吸水性が低く、表面張力が小さい等の特性
を有することから、釣り糸や漁網用として好適である。
しかしながら、ＰＶＤＦモノフィラメントは結節強度が
十分でないという問題があった。2. Description of the Related Art Polyvinylidene fluoride (PVDF) type monofilaments have characteristics such as large specific gravity, excellent weather resistance, a refractive index close to that of water, low water absorption, and low surface tension. It is also suitable for fishing nets.
However, the PVDF monofilament has a problem that the knot strength is not sufficient.
【０００３】従来、結節強度の高いＰＶＤＦ系モノフィ
ラメントを得るべく、多くの検討がなされている。例え
ば、特公昭63−3970号公報には、鞘層と芯層の少なくと
も２層構造からなり、いずれの層もＰＶＤＦ系樹脂から
なり、鞘層樹脂の見かけ粘度が芯層樹脂の見かけ粘度よ
り小さい芯鞘型複合モノフィラメントが開示されてい
る。このモノフィラメントによれば、結節強度は改良さ
れるが、単層モノフィラメントと比較して曲げ剛性が低
くなるという問題があった。Conventionally, many studies have been made to obtain a PVDF monofilament having a high knot strength. For example, in Japanese Patent Publication No. 63-3970, there is at least a two-layer structure of a sheath layer and a core layer, both layers are made of PVDF type resin, and the apparent viscosity of the sheath layer resin is smaller than that of the core layer resin. A core-sheath composite monofilament is disclosed. According to this monofilament, the knot strength is improved, but there is a problem that the bending rigidity becomes lower than that of the single-layer monofilament.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、実用上の重
要な力学的特性と加工性とを有し、かつ、高い結節強度
と曲げ剛性を有するＰＶＤＦ系モノフィラメントを提供
しようとするものである。DISCLOSURE OF THE INVENTION The present invention is intended to provide a PVDF-based monofilament which has important mechanical properties and processability in practical use, and has high knot strength and bending rigidity. .
【０００５】[0005]
【課題を解決するための手段】本発明は、この課題を解
決するもので、その要旨は、芯層と鞘層との２層構造か
らなるポリ弗化ビニリデン系モノフィラメントであっ
て、芯層が対数粘度1.25〜1.45、鞘層が対数粘度0.70〜
1.20のポリ弗化ビニリデン系樹脂で構成され、芯層の断
面積が全断面積の70〜90％で、繊維横断面の芯層、鞘層
の界面に回転対称な凹凸部を有し、芯層断面の異形度が
0.9以下であり、結節強度4.0g/d以上、曲げ剛性値が0.
12 g・ cm2/cm以上であることを特徴とする芯鞘型ポリ弗
化ビニリデン系モノフィラメントにある。The present invention is intended to solve this problem, and its gist is a polyvinylidene fluoride monofilament having a two-layer structure of a core layer and a sheath layer, wherein the core layer is Logarithmic viscosity 1.25 to 1.45, sheath layer has logarithmic viscosity 0.70 to
Comprised of 1.20 polyvinylidene fluoride-based resin, the cross-sectional area of the core layer is 70 to 90% of the total cross-sectional area, and the core cross-section of the fiber cross section has a rotationally symmetric uneven portion at the interface of the core layer and the core. The irregularity of the layer cross section
0.9 or less, knot strength of 4.0 g / d or more, flexural rigidity value of 0.
A core-sheath type polyvinylidene fluoride monofilament characterized by having a weight of 12 g · cm 2 / cm or more.
【０００６】本発明において、対数粘度（ηinh)は、ジ
メチルホルムアミドを溶媒とし、濃度 0.4g/dl、温度30
℃で測定した値であり、芯層断面の異形度とは、芯層断
面の外接円の半径に対する内接円の半径の比を意味す
る。In the present invention, the logarithmic viscosity (ηinh) is dimethylformamide as a solvent, the concentration is 0.4 g / dl, and the temperature is 30
The degree of deformation of the core layer cross section means the ratio of the radius of the inscribed circle to the radius of the circumscribed circle of the core layer cross section.
【０００７】[0007]
【発明の実施の形態】以下、本発明について詳細に説明
する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
【０００８】本発明において、ＰＶＤＦ系樹脂とは、Ｐ
ＶＤＦホモポリマー及び弗化ビニリデン単位を主体とす
るコポリマーを意味する。ＰＶＤＦコポリマーの具体例
としては、弗化ビニリデン単位を主体とし、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、弗化
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成分としたコポリマーが
挙げられる。ＰＶＤＦ系樹脂は、２種以上のポリマーの
混合物であってもよく、製糸性あるいは透明性等を向上
させる目的で、熱安定剤、着色剤、可塑剤等の添加剤を
含有しているものでもよい。In the present invention, PVDF resin means P
VDF homopolymers and copolymers based on vinylidene fluoride units. Specific examples of PVDF copolymers include copolymers containing a vinylidene fluoride unit as a main component and tetrafluoroethylene, monochlorotrifluoroethylene, vinyl fluoride, hexafluoropropylene, perfluoroisopropoxyethylene and the like as a copolymerization component. The PVDF-based resin may be a mixture of two or more kinds of polymers, and may contain additives such as a heat stabilizer, a colorant, and a plasticizer for the purpose of improving spinnability or transparency. Good.
【０００９】本発明のモノフィラメントにおいて、芯層
は対数粘度が1.25〜1.45、鞘層は対数粘度が0.70〜1.20
のＰＶＤＦ系樹脂で構成されていることが必要である。
鞘層樹脂の対数粘度が0.70未満であると製糸性が悪く、
1.20を超えるとモノフィラメントの柔軟性が不十分で、
結節強度が低くなる。また、芯層樹脂の対数粘度が1.25
未満であるとモノフィラメントの強度が低くなり、1.45
を超えると製糸性が悪くなる。In the monofilament of the present invention, the core layer has a logarithmic viscosity of 1.25 to 1.45, and the sheath layer has a logarithmic viscosity of 0.70 to 1.20.
It is necessary to be composed of the PVDF resin.
If the logarithmic viscosity of the sheath layer resin is less than 0.70, the spinnability is poor,
If it exceeds 1.20, the flexibility of the monofilament is insufficient,
The knot strength is low. The core layer resin has a logarithmic viscosity of 1.25.
If it is less than 1, the strength of the monofilament becomes low, and 1.45.
If it exceeds, the spinnability deteriorates.
【００１０】芯層樹脂としてＰＶＤＦホモポリマー、鞘
層樹脂として上記のような共重合成分を含有した弗化ビ
ニリデン単位85〜98モル％のＰＶＤＦコポリマーを用い
ると、製糸性及び糸質性能の良好なモノフィラメントが
得られ、より好ましい。When a PVDF homopolymer is used as the core layer resin and a PVDF copolymer containing 85 to 98 mol% of vinylidene fluoride units containing the above-mentioned copolymerization component is used as the sheath layer resin, good spinnability and thread quality performance are obtained. A monofilament is obtained, which is more preferable.
【００１１】本発明のモノフィラメントは、芯層の断面
積が全断面積の70〜90％であることが必要である。芯層
の断面積が70％未満であると強度が低下し、 0.9を超え
ると芯層樹脂が表層部に露出し、真円性が悪くなり、繊
維表面の荒れが顕著になる。The monofilament of the present invention requires that the cross-sectional area of the core layer is 70 to 90% of the total cross-sectional area. If the cross-sectional area of the core layer is less than 70%, the strength is reduced, and if it exceeds 0.9, the core layer resin is exposed to the surface layer portion, the circularity is deteriorated, and the fiber surface is significantly roughened.
【００１２】また、本発明のモノフィラメントは、繊維
横断面の芯層、鞘層の界面に回転対称な凹凸部を有し、
芯層断面の異形度が 0.9以下であることが必要である。
この異形度が 0.9を超えると単層モノフィラメントと比
較して曲げ剛性が低くなる。なお、芯層の断面積を70〜
90重量％とすると、芯層断面の異形度の下限は約 0.7と
なる。Further, the monofilament of the present invention has a rotationally symmetrical concave-convex portion at the interface between the core layer and the sheath layer of the fiber cross section,
The degree of irregularity of the core layer cross section must be 0.9 or less.
When the degree of deformation exceeds 0.9, the bending rigidity becomes lower than that of the single-layer monofilament. The cross-sectional area of the core layer is 70-
At 90% by weight, the lower limit of the degree of irregularity of the cross section of the core layer is about 0.7.
【００１３】芯層、鞘層の界面の凹凸の凸部の数は、６
〜32となるようにするのが適当である。この数が少なす
ぎると、フィラメントを曲げる位置によって曲げ剛性が
斑が生じ、一方、この数が多すぎると凸部の形成が困難
になるとともに、コスト高になって好ましくない。The number of convex and concave portions at the interface between the core layer and the sheath layer is 6
It is suitable to be ~ 32. If the number is too small, the bending rigidity is uneven depending on the position where the filament is bent, while if the number is too large, it becomes difficult to form the convex portion and the cost becomes high, which is not preferable.
【００１４】図１は、本発明のモノフィラメントの一例
を示す断面模式図である。図１において、１は芯層、２
は鞘層を示し、ｒ1 は芯層の内接円の半径、ｒ2 は芯層
の外接円の半径を表す。FIG. 1 is a schematic sectional view showing an example of the monofilament of the present invention. In FIG. 1, 1 is a core layer, 2
Represents a sheath layer, r 1 represents the radius of the inscribed circle of the core layer, and r 2 represents the radius of the circumscribed circle of the core layer.
【００１５】[0015]
【作用】本発明のモノフィラメントは、鞘層が対数粘度
の小さい樹脂で構成されているので、表層部の柔軟性が
増し、結節部の応力集中を緩和することができるため、
高い結節強度を示す。また、横断面の芯層と鞘層の界面
に回転対称の凹凸部を有するため、芯層部の曲げモーメ
ントが高くなり、曲げに対して強い剛性を示す。さら
に、対数粘度の大きい樹脂からなる芯層の割合が高いた
め、高い直線強度を示す。In the monofilament of the present invention, since the sheath layer is made of a resin having a small logarithmic viscosity, the flexibility of the surface layer is increased and the stress concentration in the knot can be relaxed.
It shows high knot strength. In addition, since there is a rotationally symmetrical concave-convex portion at the interface between the core layer and the sheath layer in the cross section, the bending moment of the core layer portion becomes high, and strong rigidity against bending is exhibited. Further, since the ratio of the core layer made of a resin having a large logarithmic viscosity is high, high linear strength is exhibited.
【００１６】[0016]
【実施例】次に、本発明を実施例によって具体的に説明
する。なお、測定法は次のとおりである。 (a) 直線及び結節強度 JIS L 1013 法に準じて測定した。 (b) 曲げ剛性値 カトーテック社製純曲げ試験機 KES−FB２型を用い、次
のようにして測定した。長さ25mmのサンプル糸を用い、
両端部を10mm間隔のチャックで固定し、曲率−2.5(cm)
から＋2.5(cm) まで0.50cm/secの速度で変形させ、曲率
−1.5(cm) から−0.5(cm) の間の傾きの平均値を求め
た。EXAMPLES Next, the present invention will be specifically described with reference to examples. In addition, the measuring method is as follows. (a) Straight line and knot strength Measured according to JIS L 1013 method. (b) Bending rigidity value It measured using the pure bending tester KES-FB2 type | mold by Kato Tech Co., Ltd. as follows. Using a 25 mm long sample thread,
Fix both ends with chucks with 10 mm intervals, curvature -2.5 (cm)
To +2.5 (cm) at a rate of 0.50 cm / sec, and the average value of the slope between the curvatures of -1.5 (cm) and -0.5 (cm) was obtained.
【００１７】実施例１〜３ 芯層樹脂として対数粘度1.29のＰＶＤＦホモポリマー、
鞘層樹脂として対数粘度1.00のヘキサフルオロプロピレ
ン成分を 4.8モル％共重合したＰＶＤＦコポリマーを用
い、それぞれ 270℃及び 250℃で溶融計量押出し、孔径
0.9mmの紡糸孔を有する複合紡糸用口金を用いて図１に
示す断面形状の芯鞘複合モノフィラメントを紡糸した。
紡出糸を35℃の水浴中で冷却し、未延伸糸を得た。この
未延伸糸をグリセリン浴中で6.75倍延伸し、次に0.95倍
の弛緩熱処理を行い、延伸モノフィラメントを得た。Examples 1 to 3 PVDF homopolymer having a logarithmic viscosity of 1.29 as the core resin,
A PVDF copolymer in which 4.8 mol% of a hexafluoropropylene component having an inherent viscosity of 1.00 was copolymerized as a resin for the sheath layer, was melt-metered and extruded at 270 ° C and 250 ° C, respectively, and had a pore size of
A core-sheath composite monofilament having the cross-sectional shape shown in FIG. 1 was spun using a spinneret for composite spinning having a spinning hole of 0.9 mm.
The spun yarn was cooled in a water bath at 35 ° C to obtain an undrawn yarn. This unstretched yarn was stretched 6.75 times in a glycerin bath and then subjected to a relaxation heat treatment of 0.95 times to obtain a stretched monofilament.
【００１８】比較例１〜３ 実施例１と同様の方法で表１に記載した芯／鞘層断面積
比、芯層断面異形度になるように紡糸延伸して図１に示
す形状の芯鞘複合モノフィラメントを得た。Comparative Examples 1 to 3 In the same manner as in Example 1, the core / sheath having the shape shown in FIG. 1 was drawn by spinning so that the core / sheath layer cross-sectional area ratio and the core layer cross-sectional irregularity shown in Table 1 were obtained. A composite monofilament was obtained.
【００１９】比較例４ 芯層樹脂として対数粘度1.29のＰＶＤＦホモポリマー、
鞘層樹脂として対数粘度1.22のヘキサフルオロプロピレ
ン成分を 4.8モル％共重合したＰＶＤＦコポリマーを用
い、それぞれ 270℃及び260 ℃で溶融計量押出し、実施
例１と同様にして図１に示す形状の芯鞘複合モノフィラ
メントを得た。Comparative Example 4 PVDF homopolymer having a logarithmic viscosity of 1.29 as a core resin,
A PVDF copolymer obtained by copolymerizing 4.8 mol% of a hexafluoropropylene component having an inherent viscosity of 1.22 was used as the sheath layer resin, melt-metered and extruded at 270 ° C. and 260 ° C., respectively, and the core-sheath having the shape shown in FIG. A composite monofilament was obtained.
【００２０】比較例５ 芯層樹脂として対数粘度1.29のＰＶＤＦホモポリマー、
鞘層樹脂として対数粘度0.67のヘキサフルオロプロピレ
ン成分を 4.8モル％共重合したＰＶＤＦコポリマーを用
い、それぞれ 270℃及び230 ℃で溶融計量押出し、実施
例１と同様にして図１に示す形状の芯鞘複合モノフィラ
メントを得た。Comparative Example 5 PVDF homopolymer having a logarithmic viscosity of 1.29 as a core resin,
A PVDF copolymer obtained by copolymerizing 4.8 mol% of a hexafluoropropylene component having a logarithmic viscosity of 0.67 was used as a sheath resin, and melt-measured and extruded at 270 ° C. and 230 ° C., respectively, and a core-sheath having a shape shown in FIG. A composite monofilament was obtained.
【００２１】比較例６ 芯層樹脂として対数粘度1.46のＰＶＤＦホモポリマー、
鞘層樹脂として対数粘度1.00のヘキサフルオロプロピレ
ン成分を 4.8モル％共重合したＰＶＤＦコポリマーを用
い、それぞれ 280℃及び250 ℃で溶融計量押出し、実施
例１と同様にして図１に示す形状の芯鞘複合モノフィラ
メントを得た。Comparative Example 6 PVDF homopolymer having a logarithmic viscosity of 1.46 as a core resin,
A PVDF copolymer obtained by copolymerizing 4.8 mol% of a hexafluoropropylene component having an inherent viscosity of 1.00 was used as the sheath layer resin, melt-extruded at 280 ° C. and 250 ° C., respectively, and the core-sheath having the shape shown in FIG. A composite monofilament was obtained.
【００２２】比較例７ 芯層樹脂として対数粘度1.23のＰＶＤＦホモポリマー、
鞘層樹脂として対数粘度1.00のヘキサフルオロプロピレ
ン成分を 4.8モル％共重合したＰＶＤＦコポリマーを用
い、それぞれ 260℃及び250 ℃で溶融計量押出し、実施
例１と同様にして図１に示す形状の芯鞘複合モノフィラ
メントを得た。Comparative Example 7 PVDF homopolymer having a logarithmic viscosity of 1.23 as a core resin,
A PVDF copolymer obtained by copolymerizing 4.8 mol% of a hexafluoropropylene component having an inherent viscosity of 1.00 was used as the sheath layer resin and melt-metered and extruded at 260 ° C. and 250 ° C., respectively, and the core-sheath having the shape shown in FIG. A composite monofilament was obtained.
【００２３】比較例８ 対数粘度1.29のＰＶＤＦホモポリマーのみを用い、 270
℃で溶融計量押出し、実施例１と同様に紡糸延伸して単
層モノフィラメントを得た。Comparative Example 8 Using only PVDF homopolymer having an inherent viscosity of 1.29,
Melt-metering extrusion was performed at 0 ° C., and spin-drawing was performed in the same manner as in Example 1 to obtain a single-layer monofilament.
【００２４】比較例９ 対数粘度1.00のＰＶＤＦホモポリマーのみを用い、 250
℃で溶融計量押出し、実施例１と同様に紡糸延伸して単
層モノフィラメントを得た。Comparative Example 9 Using only PVDF homopolymer having an inherent viscosity of 1.00, 250
Melt-metering extrusion was performed at 0 ° C., and spin-drawing was performed in the same manner as in Example 1 to obtain a single-layer monofilament.
【００２５】比較例10 芯層樹脂として対数粘度1.29のＰＶＤＦホモポリマー、
鞘層樹脂として対数粘度1.00のヘキサフルオロプロピレ
ン成分を 4.8モル％共重合したＰＶＤＦコポリマーを用
い、それぞれ 270℃及び250 ℃で溶融計量押出し、孔径
0.9mmの紡糸孔を有する複合紡糸用口金を用いて図２に
示す断面形状の芯鞘複合モノフィラメントを紡糸し、実
施例１と同様にして延伸し、芯鞘複合モノフィラメント
を得た。Comparative Example 10 PVDF homopolymer having a logarithmic viscosity of 1.29 as a core resin,
A PVDF copolymer obtained by copolymerizing 4.8 mol% of a hexafluoropropylene component having an inherent viscosity of 1.00 was used as the sheath layer resin, melt-measured and extruded at 270 ° C. and 250 ° C.
A core-sheath composite monofilament was obtained by spinning a core-sheath composite monofilament having a cross-sectional shape shown in FIG. 2 using a spinneret for composite spinning having a 0.9 mm spinning hole and drawing it in the same manner as in Example 1.
【００２６】上記の実施例及び比較例の結果を表１に示
す。The results of the above Examples and Comparative Examples are shown in Table 1.
【００２７】[0027]
【表１】 [Table 1]
【００２８】表１から明らかなように、本発明の芯鞘複
合モノフィラメントは、直線強度、結節強度及び曲げ剛
性に優れた特性を示したが、比較例のモノフィラメント
は、満足すべき物性を示さなかった。As is clear from Table 1, the core-sheath composite monofilament of the present invention showed excellent linear strength, knot strength and flexural rigidity, but the monofilaments of Comparative Examples did not show satisfactory physical properties. It was
【００２９】[0029]
【発明の効果】本発明によれば、ＰＶＤＦ系モノフィラ
メント本来の優れた特性を保持しつつ、結節強度及び曲
げ剛性に優れたモノフィラメントが提供される。EFFECTS OF THE INVENTION According to the present invention, a monofilament having excellent knot strength and flexural rigidity while maintaining the original excellent characteristics of PVDF type monofilament is provided.
【図１】本発明のモノフィラメントの一例を示す断面模
式図である。FIG. 1 is a schematic sectional view showing an example of a monofilament of the present invention.
【図２】比較例のモノフィラメントを示す断面模式図で
ある。FIG. 2 is a schematic sectional view showing a monofilament of a comparative example.
１ 芯層 ２ 鞘層 1 core layer 2 sheath layer
Claims (1)
化ビニリデン系モノフィラメントであって、芯層が対数
粘度1.25〜1.45、鞘層が対数粘度0.70〜1.20のポリ弗化
ビニリデン系樹脂で構成され、芯層の断面積が全断面積
の70〜90％で、繊維横断面の芯層、鞘層の界面に回転対
称な凹凸部を有し、芯層断面の異形度が 0.9以下であ
り、結節強度4.0g/d以上、曲げ剛性値が0.12 g・ cm2/cm
以上であることを特徴とする芯鞘型ポリ弗化ビニリデン
系モノフィラメント。1. A polyvinylidene fluoride monofilament having a two-layer structure of a core layer and a sheath layer, wherein the core layer has a logarithmic viscosity of 1.25 to 1.45 and the sheath layer has a logarithmic viscosity of 0.70 to 1.20. Composed of resin, the cross-sectional area of the core layer is 70 to 90% of the total cross-sectional area, and the cross-section of the core layer and the sheath layer have rotationally symmetric irregularities at the interface of the core layer and the sheath layer. The knot strength is 4.0 g / d or more, and the bending rigidity value is 0.12 g ・ cm 2 / cm.
A core-sheath type polyvinylidene fluoride monofilament characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27399495A JP3589515B2 (en) | 1995-10-23 | 1995-10-23 | Core-sheath type polyvinylidene fluoride monofilament |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27399495A JP3589515B2 (en) | 1995-10-23 | 1995-10-23 | Core-sheath type polyvinylidene fluoride monofilament |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09119020A true JPH09119020A (en) | 1997-05-06 |
| JP3589515B2 JP3589515B2 (en) | 2004-11-17 |
Family
ID=17535470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27399495A Expired - Fee Related JP3589515B2 (en) | 1995-10-23 | 1995-10-23 | Core-sheath type polyvinylidene fluoride monofilament |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3589515B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005031049A1 (en) * | 2003-09-30 | 2005-04-07 | Kureha Corporation | Vinylidene fluoride resin monofilament and process for producing the same |
| CN109355780A (en) * | 2018-11-06 | 2019-02-19 | 安徽太平洋特种网业有限公司 | A kind of production technology of strong thermal contraction net |
-
1995
- 1995-10-23 JP JP27399495A patent/JP3589515B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005031049A1 (en) * | 2003-09-30 | 2005-04-07 | Kureha Corporation | Vinylidene fluoride resin monofilament and process for producing the same |
| CN109355780A (en) * | 2018-11-06 | 2019-02-19 | 安徽太平洋特种网业有限公司 | A kind of production technology of strong thermal contraction net |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3589515B2 (en) | 2004-11-17 |
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