JPH0491215A - Production of polyvinylidene fluoride monofilament having high knot strength - Google Patents
Production of polyvinylidene fluoride monofilament having high knot strengthInfo
- Publication number
- JPH0491215A JPH0491215A JP20444290A JP20444290A JPH0491215A JP H0491215 A JPH0491215 A JP H0491215A JP 20444290 A JP20444290 A JP 20444290A JP 20444290 A JP20444290 A JP 20444290A JP H0491215 A JPH0491215 A JP H0491215A
- Authority
- JP
- Japan
- Prior art keywords
- monofilament
- polyvinylidene fluoride
- knot strength
- birefringence
- inert gas
- 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
- 239000002033 PVDF binder Substances 0.000 title claims abstract description 48
- 229920002981 polyvinylidene fluoride Polymers 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000011261 inert gas Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002202 Polyethylene glycol Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920001223 polyethylene glycol Polymers 0.000 description 5
- 239000002344 surface layer Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- 235000003403 Limnocharis flava Nutrition 0.000 description 1
- 244000278243 Limnocharis flava Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- -1 trifluoromonochloroethylene, hexafluoropropylene Chemical group 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は高結節強度ポリフッ化ビニリデンモノフィラメ
ントの製造方法に耐するものであり、詳しくは主として
釣糸に適した高結節強度ポリフッ化ビニリデンモノフィ
ラメントの製造方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing a high knot strength polyvinylidene fluoride monofilament, and more specifically, a method for producing a high knot strength polyvinylidene fluoride monofilament mainly suitable for fishing lines. It is about the method.
［従来の技術］
ポリフッ化ビニリデンモノフィラメントは、強靭性、耐
衝撃性、透明性および耐光性などに優れ、しかも高比重
で水中に沈みやすく、屈折率が水に近く水中における光
の表面反射が極めて少ないという特性を有し特に釣糸や
漁網用として優れた性質を有する。[Prior art] Polyvinylidene fluoride monofilament has excellent toughness, impact resistance, transparency, and light resistance.Moreover, it has a high specific gravity, easily sinks in water, and has a refractive index close to that of water, which causes extremely low surface reflection of light in water. It has the characteristic of being small in amount, and has excellent properties especially for use in fishing lines and fishing nets.
ポリフッ化ビニリデンモノフィラメントは、常に前記の
各特性の改良が要求されるが、特により細く、より強く
ということが要求されている。Polyvinylidene fluoride monofilaments are always required to be improved in each of the above properties, and in particular, they are required to be thinner and stronger.
従来、ポリフッ化ビニリデンモノフィラメントとして、
例えば特開昭６３−１１２７１７号公報に記載されてい
る。該公報に記載されたポリフッ化ビニリデンモノフィ
ラメントは表面の複屈折および繊維軸に垂直な断面の平
均複屈折を特定の範囲となしたものである。Conventionally, as polyvinylidene fluoride monofilament,
For example, it is described in Japanese Unexamined Patent Publication No. 112717/1983. The polyvinylidene fluoride monofilament described in this publication has surface birefringence and average birefringence in a cross section perpendicular to the fiber axis within a specific range.
［発明が解決しようとする課題］
前記、特開昭６３−１１２７１７号公報に記載されたポ
リフッ化ビニリデンモノフィラメントは、その特性が優
れていることから市場において高い評価を得ている。し
かし、特に釣糸においては、ナイロンモノフィラメント
に比べ強度が低いため、高強度、特に結節強度の高いモ
ノフィラメントが要求されている。ここで特に注意しな
くてはならないのは、単に強度のみを向上するのではな
く他のテグスとして有用な特性をも一定水準以上保持す
る必要がある。[Problems to be Solved by the Invention] The polyvinylidene fluoride monofilament described in JP-A-63-112717 has been highly evaluated in the market due to its excellent properties. However, especially for fishing lines, the strength is lower than that of nylon monofilament, so monofilament with high strength, especially high knot strength, is required. Particular attention must be paid here not only to improving the strength but also to maintaining other properties useful as strings above a certain level.
本発明の目的は、従来の技術において得られたポリフッ
化ビニリデンモノフィラメントよりも、高強度で特に結
節強度に優れた高結節強度ポリフッ化ビニリデンモノフ
ィラメントの製造方法を提供することにある。An object of the present invention is to provide a method for producing a high knot strength polyvinylidene fluoride monofilament which has higher strength and particularly superior knot strength than polyvinylidene fluoride monofilaments obtained by conventional techniques.
［課題を解決するための手段および作用］本発明の構成
は、高結節強度ポリフッ化ビニリデンモノフィラメント
の製造方法において、複屈折が２５Ｘ１０−”以上のポ
リフッ化ビニリデンモノフィラメントを不活性気体の温
度（Ｔ℃）とモノフィラメントの直径（Ｄ ｍｍ）と処
理時間（τ秒）の関係が、
６８Ｄ／（Ｔ−２５）≦τ≦６８０ Ｄ／（Ｔ−２５）
１２００≧Ｔ≧３００
を満足する条件を用いて不活性気体中で熱処理すること
を特徴とする高結節強度ポリフッ化ビニリデンモノフィ
ラメントの製造方法からなる。[Means and effects for solving the problems] The structure of the present invention is to provide a method for producing polyvinylidene fluoride monofilament with high knot strength, in which a polyvinylidene fluoride monofilament having a birefringence of 25×10-” or more is heated to an inert gas temperature (T°C ), the relationship between monofilament diameter (D mm) and processing time (τ seconds) is 68D/(T-25)≦τ≦680 D/(T-25)
This method comprises a method for producing a polyvinylidene fluoride monofilament with high knot strength, characterized by heat treatment in an inert gas using conditions satisfying 1200≧T≧300.
本発明の方法に用いるポリフッ化ビニリデンモノフィラ
メントは、ポリフッ化ビニリデンホモポリマに限らず、
分子鎖の繰り返し構造単位の８０モル％以上がフッ化ビ
ニリデンからなり、共重合成分を２０モル％未満の範囲
で含有してもよい。共重合成分としては、例えばテトラ
フロロエチレン、トリフロロモノクロロエチレン、ヘキ
サフロロプロピレン等が挙げられる。The polyvinylidene fluoride monofilament used in the method of the present invention is not limited to polyvinylidene fluoride homopolymer,
80 mol % or more of the repeating structural units of the molecular chain consist of vinylidene fluoride, and may contain a copolymer component in a range of less than 20 mol %. Examples of the copolymerization component include tetrafluoroethylene, trifluoromonochloroethylene, hexafluoropropylene, and the like.
共重合成分を２０モル％以上含有した場合は、結晶性が
低下し好ましくない。If the copolymer component is contained in an amount of 20 mol % or more, crystallinity decreases, which is not preferable.
本発明に係わるポリフッ化ビニリデンモノフィラメント
は、ジメチルホルムアミドの０．４ｇ／ｃｃ溶液で測定
した固有粘度指数（η１ｎｈ）が０．８以上、特に１，
０以上のものが好ましい。The polyvinylidene fluoride monofilament according to the present invention has an intrinsic viscosity index (η1nh) of 0.8 or more, especially 1,
It is preferably 0 or more.
０、 ８未満では、釣糸に敵する高強度のモノフィラメ
ントが得られない。If it is less than 0.8, a monofilament with high strength comparable to fishing line cannot be obtained.
本発明の方法に用いるポリフッ化ビニリデンモノフィラ
メントには、例えば顔料、染料、耐光剤、紫外線吸収剤
、酸化防止剤、結晶化抑制剤及び可塑剤などの添加剤を
、本発明の効果を阻害しない範囲で含有することができ
る。The polyvinylidene fluoride monofilament used in the method of the present invention may contain additives such as pigments, dyes, light stabilizers, ultraviolet absorbers, antioxidants, crystallization inhibitors, and plasticizers within a range that does not impede the effects of the present invention. It can be contained in
本発明の方法では、繊維軸方向に配向したポリフッ化ビ
ニリデンモノフィラメントを用いる必要があり１．高度
に配向しているほど本発明の効果が顕著になる。このた
め、複屈折が２５×１０−１以上、好ましくは３０ｘｌ
Ｏ−ｊ以上のポリフッ化ビニリデンモノフィラメントを
用いる。In the method of the present invention, it is necessary to use polyvinylidene fluoride monofilament oriented in the fiber axis direction.1. The more highly oriented the material is, the more pronounced the effects of the present invention will be. Therefore, the birefringence is 25x10-1 or more, preferably 30xl
A polyvinylidene fluoride monofilament of O-j or higher is used.
上記のような配向ポリフッ化ビニリデンモノフィラメン
トは通常の溶融紡糸・熱延伸法で容易に得ることができ
る。The above-mentioned oriented polyvinylidene fluoride monofilament can be easily obtained by a conventional melt spinning/hot drawing method.
前記の複屈折が２’５Ｘ１０−４未満では本発明の目的
とする高強度で特に結節強度に優れた釣糸に適するポリ
フッ化ビニリデンモノフィラメントが得られない。If the birefringence is less than 2'5 x 10-4, it is impossible to obtain a polyvinylidene fluoride monofilament which is suitable for fishing lines with high strength and particularly excellent knot strength, which is the object of the present invention.
本発明の方法では、上記の複屈折が２５×ＩＱ−１以上
のポリフッ化ビニリデンモノフィラメントを不活性気体
中で、該不活性気体の温度（Ｔ℃）とモノフィラメント
の直径（Ｄ ｍｍ）と処理時間（τ秒）の関係が、
６８Ｄ／（Ｔ−２５）≦τ≦６８０Ｄ／（Ｔ−２５）１
２００≧Ｔ≧３００、
さらに好ましくは
６８Ｄ／（Ｔ−２５）≦τ≦３４０Ｄ／（Ｔ−２５）１
０００≧Ｔ≧５５０
を満足するように熱処理する。In the method of the present invention, polyvinylidene fluoride monofilament having a birefringence of 25×IQ-1 or more is heated in an inert gas using the temperature of the inert gas (T°C), the diameter of the monofilament (D mm), and the processing time. The relationship (τ seconds) is 68D/(T-25)≦τ≦680D/(T-25)1
200≧T≧300, more preferably 68D/(T-25)≦τ≦340D/(T-25)1
Heat treatment is performed to satisfy 000≧T≧550.
前記の本発明の方法における熱処理条件を満足すること
によって、モノフィラメント表層部分のみを一旦溶融し
、モノフィラメントの表層を十分に配向緩和する。この
ようにモノフィラメントの表層を配向緩和することによ
って、モノフィラメント自体が柔軟になり結節強度が向
上するのである。By satisfying the heat treatment conditions in the method of the present invention described above, only the surface layer portion of the monofilament is once melted, and the orientation of the surface layer of the monofilament is sufficiently relaxed. By relaxing the orientation of the surface layer of the monofilament in this way, the monofilament itself becomes flexible and its knot strength is improved.
上記の熱処理は、モノフィラメントの直径が大きいほど
、配向緩和層を厚くする必要があり、処理時間を長くす
る必要がある。In the above heat treatment, the larger the diameter of the monofilament, the thicker the orientation relaxation layer and the longer the treatment time.
また、処理温度を高くしすぎると配向緩和層が厚くなり
すぎ、引張り強度が著しく低下する。Furthermore, if the treatment temperature is set too high, the orientation relaxation layer will become too thick and the tensile strength will drop significantly.
したがって該処理温度（Ｔ）は３００℃〜１２００℃の
範囲内とする。さらに、前記の熱処理時間がモノフィラ
メントの太さおよび処理温度との関係において、
６８Ｄ／（Ｔ−２５）≦τ≦６８０Ｄ／（Ｔ−２５）の
関係を満足していれば、モノフィラメントの表層に適当
な厚みの配向緩和層が形成され、引張り強度は高い値に
維持したまま、結節強度を著しく向上することができる
。Therefore, the treatment temperature (T) is within the range of 300°C to 1200°C. Furthermore, if the above heat treatment time satisfies the relationship of 68D/(T-25)≦τ≦680D/(T-25) in relation to the thickness of the monofilament and the treatment temperature, it is suitable for the surface layer of the monofilament. An orientation-relaxing layer with a certain thickness is formed, and the nodule strength can be significantly improved while maintaining the tensile strength at a high value.
なお、本発明でいう不活性気体とは熱処理中にポリフッ
化ビニリデンモノフィラメントと反応して著しい化学変
化を起こさないものであればよく、空気、窒素が特に好
ましい。The inert gas used in the present invention may be any gas that does not react with the polyvinylidene fluoride monofilament during heat treatment and cause a significant chemical change, and air and nitrogen are particularly preferred.
上記の熱処理はポリフッ化ビニリデンモノフィラメント
を定長、弛緩あるいは延伸を加えながら処理する。具体
的には０．９〜１．５の倍率で定長、弛緩あるいは延伸
を施しながら熱処理を行なう。In the above heat treatment, the polyvinylidene fluoride monofilament is subjected to constant length, relaxation, or stretching. Specifically, the heat treatment is performed at a magnification of 0.9 to 1.5 while constant length, relaxation, or stretching is performed.
次に本発明に係わる方法について実施例に基づいて説明
するが、得られたポリフッ化ビニリデンモノフィラメン
トの物性は以下の測定法によって測定する。Next, the method according to the present invention will be explained based on Examples, and the physical properties of the obtained polyvinylidene fluoride monofilament are measured by the following measuring method.
（Ａ）固有粘度指数ηｉｎｈ ：
試料をジメチルホルムアミドに０ 、 ４ ｇ／ｃｃの
濃度で溶解し、オストワルド粘度計を用いて３０℃で測
定した。(A) Intrinsic viscosity index ηinh: A sample was dissolved in dimethylformamide at a concentration of 0.4 g/cc, and measured at 30°C using an Ostwald viscometer.
（Ｂ）複屈折Δｎ：
日本光学工業（株）製ＰＯＨ型偏光顕微鏡を用い、白色
光を光源として通常のベレックコンペンセータ法により
求めた。(B) Birefringence Δn: Birefringence Δn was determined using a POH type polarizing microscope manufactured by Nippon Kogaku Kogyo Co., Ltd. and a normal Berek compensator method using white light as a light source.
（Ｃ）引張強度、引張伸度、結節強度および結節伸度
Ｊ Ｉ ５−Ｌ１０１７の定義によった。試料を総状に
とり、２０℃、６５％ＲＨの温湿度調節室で２４時間放
置後、（株）オリエンチック社製“テンシロン”ＵＴＭ
−４−１００型引張試験機を用い、試長２５ｃｍ、引張
速度３０ｃｍ／分で測定した。(C) Tensile strength, tensile elongation, knot strength and knot elongation According to the definitions of J I 5-L1017. A sample was taken in a general shape, and after being left in a temperature and humidity controlled room at 20°C and 65% RH for 24 hours, it was placed in a "Tensilon" UTM manufactured by Orientic Co., Ltd.
Measurement was carried out using a tensile tester model -4-100 with a sample length of 25 cm and a tensile speed of 30 cm/min.
［実施例］
比較例１
固有粘度指数が１．２のポリフッ化ビニリデン重合体チ
ップを紡糸機中で２６０℃で溶融し、孔径１．０ＩＩＩ
ＩＩｌの口金を通して紡糸し、さらに２０℃のポリエチ
レングリコール浴中で冷却して未延伸モノフィラメント
を得た。ここで得られた未延伸モノフィラメントの複屈
折は１．５×１０−ｓであった。[Example] Comparative Example 1 A polyvinylidene fluoride polymer chip having an intrinsic viscosity index of 1.2 was melted at 260°C in a spinning machine, and the pore size was 1.0III.
The resulting material was spun through a No. IIl nozzle and further cooled in a polyethylene glycol bath at 20° C. to obtain an undrawn monofilament. The birefringence of the undrawn monofilament obtained here was 1.5×10 −s.
次に、この未延伸モノフィラメントを１６５℃のポリエ
チレングリコール延伸洛中で６．５倍に延伸し、引続い
て８０℃の温水浴中でポリエチレングリコールを除去し
て直径０．２３ｍｎのポリフッ化ビニリデンモノフィラ
メントを得た。Next, this undrawn monofilament was stretched 6.5 times in a polyethylene glycol stretching bath at 165°C, and then the polyethylene glycol was removed in a hot water bath at 80°C to form a polyvinylidene fluoride monofilament with a diameter of 0.23 mm. Obtained.
得られたポリフッ化ビニリデンモノフィラメントの複屈
折は３９．３Ｘ１０−”であり、引張強度は６．５ｇ／
ｄと高かったが、結節強度が２．７ｇ／ｄであった。The obtained polyvinylidene fluoride monofilament has a birefringence of 39.3×10-” and a tensile strength of 6.5 g/
d, but the nodule strength was 2.7 g/d.
実施例１
比較例１で得られた直径０．２３ｍｍ、複屈折３９．３
Ｘ１０−８のポリフッ化ビニリデンモノフィラメントを
７２０℃の不活性気体中で１゜０４倍に延伸しながら０
．０５秒の熱処理を行なった。Example 1 Diameter 0.23 mm obtained in Comparative Example 1, birefringence 39.3
A polyvinylidene fluoride monofilament of
．． Heat treatment was performed for 0.05 seconds.
得られたポリフッ化ビニリデンモノフィラメントの引張
強度は６．３ｇ／ｄと熱処理による低下はあまりなく、
結節強度が４．７ｇ／ｄであり、比較例１の方法で得ら
れたポリフッ化ビニリデンモノフィラメントに比べ著し
く向上した。The tensile strength of the obtained polyvinylidene fluoride monofilament was 6.3 g/d, which did not decrease much due to heat treatment.
The knot strength was 4.7 g/d, which was significantly improved compared to the polyvinylidene fluoride monofilament obtained by the method of Comparative Example 1.
比較例２
固有粘度指数が１．２のポリフッ化ビニリデン重合体チ
ップを紡糸機中で２８０℃で溶融し、孔径２．Ｏｍｍの
口金を通して紡糸し、さらに２０℃のポリエチレングリ
コール浴中で冷却して未延伸モノフィラメントを得た。Comparative Example 2 A polyvinylidene fluoride polymer chip having an intrinsic viscosity index of 1.2 was melted in a spinning machine at 280°C, and the pore size was 2.2. It was spun through an Omm spinneret and further cooled in a polyethylene glycol bath at 20°C to obtain an undrawn monofilament.
前記未延伸モノフィラメントを１６０℃のポリエチレン
グリコール延伸浴中で３．２倍に延伸した後、さらに１
６５℃で２倍の延伸をおこなった。総合延伸倍率６．４
倍のポリフッ化ビニリデンモノフィラメントの直径は０
．５２ｍｍであり、引張強度は５．４ｇ／ｄであったが
、結節強度は３．２ｇ／ｄと低かった。また、このポリ
フッ化ビニリデンモノフィラメントの複屈折は３７，４
Ｘ１０−”であった。After the undrawn monofilament was drawn 3.2 times in a polyethylene glycol drawing bath at 160°C,
Stretching was performed twice at 65°C. Total stretching ratio 6.4
The diameter of polyvinylidene fluoride monofilament is 0
．． The length was 52 mm, and the tensile strength was 5.4 g/d, but the knot strength was as low as 3.2 g/d. Moreover, the birefringence of this polyvinylidene fluoride monofilament is 37.4
X10-''.
実施例２
比較例２で得られた直径０．５２ｍｍ、複屈折３７．４
Ｘ１０−３のポリフッ化ビニリデンモノフィラメントを
６５０℃の不活性気体中で０゜１３秒の熱処理を行なっ
た。なお、熱処理は定長で行なった。Example 2 Diameter 0.52 mm and birefringence 37.4 obtained in Comparative Example 2
The polyvinylidene fluoride monofilament of X10-3 was heat treated in an inert gas at 650°C for 0° and 13 seconds. Note that the heat treatment was performed with a fixed length.
得られたポリフッ化ビニリデンモノフィラメントの引張
強度は５．３ｇ／ｄと熱処理による低下はあまりなく、
結節強度が４．６ｇ／ｄであり、比較例２の方法で得ら
れたポリフッ化ビニリデンモノフィラメントに比べ著し
く向上した。The tensile strength of the obtained polyvinylidene fluoride monofilament was 5.3 g/d, which did not decrease much due to heat treatment.
The knot strength was 4.6 g/d, which was significantly improved compared to the polyvinylidene fluoride monofilament obtained by the method of Comparative Example 2.
実施例３〜６および比較例３〜６
比較例１で得られた直径０．２３ｍｍ、複屈折３９．３
ｘｌＯ−”のポリフッ化ビニリデンモノフィラメントを
用いて、不活性気体の温度部よび処理時間を変更して、
熱処理を施したポリフッ化ビニリデンモノフィラメント
を得た。Examples 3 to 6 and Comparative Examples 3 to 6 Diameter 0.23 mm and birefringence 39.3 obtained in Comparative Example 1
xlO-” polyvinylidene fluoride monofilament, by changing the inert gas temperature and treatment time,
A heat-treated polyvinylidene fluoride monofilament was obtained.
処理条件は表−１に示すとおりであり、得られたポリフ
ッ化ビニリデンモノフィラメントの特性は表−２に示す
とおりであった。The processing conditions were as shown in Table 1, and the properties of the obtained polyvinylidene fluoride monofilament were as shown in Table 2.
表に示したように本発明の方法によって得られたポリフ
ッ化ビニリデンモノフィラメントは結節強度が著しく向
上している。As shown in the table, the polyvinylidene fluoride monofilament obtained by the method of the present invention has significantly improved knot strength.
（以下余白）
表−１
表−２
（以下余白）
［発明の効果］
本発明の方法によれば繊維軸方向に高度に配向したポリ
フッ化ビニリデンモノフィラメントモノフィラメントを
特定の温度範囲、処理時間で熱処理することにより、表
層部分のみが配向緩和されて、強度は維持したまま結節
強度の高いモノフィラメントを得ることが可能となる。(Hereinafter in the margin) Table-1 Table-2 (Hereinafter in the margin) [Effects of the invention] According to the method of the present invention, polyvinylidene fluoride monofilament monofilament highly oriented in the fiber axis direction is heat-treated in a specific temperature range and treatment time. As a result, the orientation of only the surface layer portion is relaxed, making it possible to obtain a monofilament with high knot strength while maintaining the strength.
また、本発明の方法で得られる高結節強度ポリッツ化ビ
ニリデンモノフィラメントは、釣糸、漁網、のり網など
の水産用資材、ゴムベルトの補強・スリング、ロープな
どの運搬用資材、フェンス・落石防止などの土木資材な
どの用途に有効に使用できる。In addition, the high knot strength poritzized vinylidene monofilament obtained by the method of the present invention can be used for marine materials such as fishing lines, fishing nets, and glue nets, for reinforcing rubber belts, for transportation materials such as slings and ropes, and for civil engineering such as fences and rockfall prevention. It can be effectively used for materials, etc.
Claims (1)
造方法において、複屈折が２５×１０＾−＾３以上のポ
リフッ化ビニリデンモノフィラメントを不活性気体の温
度（Ｔ℃）とモノフィラメントの直径（Ｄｍｍ）と処理
時間（τ秒）の関係が、 ６８Ｄ／（Ｔ−２５）≦τ≦６８０Ｄ／（Ｔ−２５）１
２００≧Ｔ≧３００ を満足する条件を用いて不活性気体中で熱処理すること
を特徴とする高結節強度ポリフッ化ビニリデンモノフィ
ラメントの製造方法。[Claims] In a method for producing a polyvinylidene fluoride monofilament with high knot strength, polyvinylidene fluoride monofilament having a birefringence of 25 x 10^-^3 or more is mixed with the temperature of an inert gas (T°C) and the diameter of the monofilament (Dmm). ) and processing time (τ seconds) is 68D/(T-25)≦τ≦680D/(T-25)1
A method for producing a polyvinylidene fluoride monofilament with high knot strength, characterized by carrying out heat treatment in an inert gas using conditions satisfying 200≧T≧300.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20444290A JP2776013B2 (en) | 1990-07-31 | 1990-07-31 | Method for producing high knot strength polyvinylidene fluoride monofilament |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20444290A JP2776013B2 (en) | 1990-07-31 | 1990-07-31 | Method for producing high knot strength polyvinylidene fluoride monofilament |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0491215A true JPH0491215A (en) | 1992-03-24 |
| JP2776013B2 JP2776013B2 (en) | 1998-07-16 |
Family
ID=16490597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20444290A Expired - Fee Related JP2776013B2 (en) | 1990-07-31 | 1990-07-31 | Method for producing high knot strength polyvinylidene fluoride monofilament |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2776013B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6677416B2 (en) | 2000-01-18 | 2004-01-13 | Kureha Chemical Industry Company, Limited | Vinylidene fluoride resin monofilament and method for producing the same |
-
1990
- 1990-07-31 JP JP20444290A patent/JP2776013B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6677416B2 (en) | 2000-01-18 | 2004-01-13 | Kureha Chemical Industry Company, Limited | Vinylidene fluoride resin monofilament and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2776013B2 (en) | 1998-07-16 |
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