JPH11243815A - Mold-releasing member for molding internally threaded fishing rod made of fiber reinforced resin - Google Patents
Mold-releasing member for molding internally threaded fishing rod made of fiber reinforced resinInfo
- Publication number
- JPH11243815A JPH11243815A JP10073135A JP7313598A JPH11243815A JP H11243815 A JPH11243815 A JP H11243815A JP 10073135 A JP10073135 A JP 10073135A JP 7313598 A JP7313598 A JP 7313598A JP H11243815 A JPH11243815 A JP H11243815A
- Authority
- JP
- Japan
- Prior art keywords
- fishing rod
- narrow
- reinforced resin
- mandrel
- tape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fishing Rods (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は繊維強化樹脂製中通
し釣竿の成形に使用する離型部材に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a release member used for forming a through fishing rod made of fiber reinforced resin.
【０００２】[0002]
【従来の技術】繊維強化樹脂製中通し釣竿においては、
釣糸の滑り性を向上させるために内面を低摩擦面とする
ことが要求される。この中通し釣竿の成形方法として、
マンドレル上に細巾テ−プまたは細紐をギャップ巻き
し、この細巾テ−プまたは細紐巻回マンドレル上に繊維
強化樹脂材を層状に巻回し、該巻回層の加熱硬化後、マ
ンドレル及び巻回細巾テ−プまたは細紐を除去して硬化
層内面を螺旋状溝を有する凹凸面とする方法が公知であ
る（実開平５−８８２５９号公報、特開平８−１７２９
８０号公報）。従来、上記細巾テ−プまたは細紐には、
ポリテトラフルオロエチレン製のものが使用されてい
る。2. Description of the Related Art In a through fishing rod made of fiber reinforced resin,
In order to improve the slipperiness of the fishing line, it is required that the inner surface has a low friction surface. As a method of forming this through fishing rod,
A narrow tape or a thin string is wound around the mandrel in a gap, and a fiber reinforced resin material is wound in a layer on the narrow tape or the thin string winding mandrel. In addition, a method of removing a wound narrow tape or a thin string to make an inner surface of a hardened layer an uneven surface having a spiral groove is known (Japanese Utility Model Laid-Open No. 5-88259, Japanese Patent Application Laid-Open No. 8-1729).
No. 80). Conventionally, the above-mentioned narrow tape or thin string has
Those made of polytetrafluoroethylene are used.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、この除
去したポリテトラフルオロエチレン製の細巾テ−プまた
は細紐においては、除去時の引張り力のために伸びてい
るので再使用し難い。また、焼却するとフッ酸を含む有
毒ガスが発生するので、廃棄処理が厄介である。従っ
て、上記の細巾テ−プまたは細紐としては、フッ酸やダ
イオキシン等の有害物の発生が無く焼却処理可能な樹脂
であるオレフィン系合成樹脂の使用が要請される。However, it is difficult to reuse the stripped tape or strip made of polytetrafluoroethylene which has been stretched due to the tensile force at the time of removal. Also, when incinerated, toxic gas containing hydrofluoric acid is generated, which makes disposal processing troublesome. Therefore, it is required to use an olefin-based synthetic resin which is a resin which does not generate harmful substances such as hydrofluoric acid and dioxin and which can be incinerated as the narrow tape or the thin string.
【０００４】しかしながら、上記の細巾テ−プまたは細
紐の断面寸法は、例えば厚さが数百μｍオ−ダ−、巾が
数ｍｍオ−ダ−の小断面積であり、通常のオレフィン系
合成樹脂製としたのでは、マンドレルに巻き付ける際の
テ−プ張力による伸び、更にはプリプレグを加熱硬化す
る際のテ−プの軟化に伴う残存テ−プ張力に基づくテ−
プ伸び等によるテ−プ断面積変化や外郭変化のためにテ
−プ断面積や外郭が微妙に変化し中通し釣竿内面の凹凸
面の溝や山の巾やの深さが狂って、同内面を所望の低摩
擦に設定し難い。However, the cross-sectional dimensions of the above-mentioned narrow tape or cord have a small cross-sectional area of, for example, a thickness on the order of several hundreds of μm and a width on the order of several mm, and are usually olefins. When the prepreg is made of a synthetic resin, the tape is stretched by a tape tension when wound around a mandrel, and furthermore, a tape based on a residual tape tension accompanying a softening of the tape when the prepreg is heated and cured.
Due to changes in the tape cross-sectional area and outer shape due to elongation of the tape, the tape cross-sectional area and outer shape slightly change, and the depth of the groove and the width of the mountain and the peak of the uneven surface on the inner surface of the fishing rod go out of order. It is difficult to set the inner surface to a desired low friction.
【０００５】本発明の目的は、マンドレル上に細巾テ−
プまたは細紐をギャップ巻きし、この細巾テ−プまたは
細紐巻回マンドレル上に繊維強化樹脂材を層状に巻回
し、該巻回層の加熱硬化後、マンドレル及び巻回細巾テ
−プまたは細紐を除去して硬化層内面を螺旋状溝を有す
る凹凸面とする繊維強化樹脂製中通し釣竿の成形方法に
おいて、細巾テ−プまたは細紐を焼却処理の容易なオレ
フィン系合成樹脂製にしても、凹凸面の溝や山の巾、深
さ乃至は高さを所望の寸法に正確に設定することを可能
にする中通し釣竿成形用離型部材を提供することにあ
る。An object of the present invention is to provide a narrow tape on a mandrel.
The fiber reinforced resin material is wound in a layer on the narrow tape or narrow string winding mandrel, and after heating and curing of the wound layer, the mandrel and the narrow winding tape are wound. In the method of forming a through rod made of a fiber-reinforced resin having a hardened layer with an uneven surface having a helical groove by removing the tape or the string, an olefin-based synthesis in which the narrow tape or the string is easily incinerated. It is an object of the present invention to provide a releasing member for forming a fishing rod through which a groove, a width, a depth or a height of a groove or a crest of an uneven surface can be accurately set to a desired size even if made of resin.
【０００６】[0006]
【課題を解決するための手段】本発明に係る繊維強化樹
脂製中通し釣竿成形用離型部材は、マンドレル上に細巾
テ−プまたは細紐をギャップ巻きし、この細巾テ−プま
たは細紐巻回マンドレル上に繊維強化樹脂材を層状に巻
回し、該巻回層の加熱硬化後、マンドレル及び巻回細巾
テ−プまたは細紐を除去して硬化層内面を螺旋状溝を有
する凹凸面とする繊維強化樹脂製中通し釣竿の成形方法
において使用する前記細巾テ−プまたは細紐であり、オ
レフィン系合成樹脂製で融点が前記加熱硬化の温度より
も高く、しかも曲げ弾性率が７０００ｋｇ／ｃｍ2以下
であることを特徴とする構成であり、オレフィン系合成
樹脂としては、ポリプロピレンまたはポリメチルペンテ
ンあるいは両者の混合物が好適である。According to the present invention, there is provided a mold releasing member for forming a through fishing rod made of fiber reinforced resin, wherein a narrow tape or a thin string is gap-wound on a mandrel, and the narrow tape or the narrow tape is wound. A fiber reinforced resin material is wound in layers on a thin string winding mandrel, and after heating and curing of the wound layer, the mandrel and the wound narrow tape or thin string are removed to form a spiral groove on the inner surface of the hardened layer. The narrow tape or string used in the method of forming a through fishing rod made of fiber reinforced resin having an uneven surface, which is made of an olefinic synthetic resin, has a melting point higher than the temperature of the heat curing, and has a bending elasticity. The rate is 7000 kg / cm 2 or less, and the olefin-based synthetic resin is preferably polypropylene or polymethylpentene or a mixture of both.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照しつつ説明する。図１の（イ）乃至図１の（ニ）
は本発明に係る釣竿成形用離型部材を用いる中通し釣竿
の成形方法を示す図面である。この方法により繊維強化
樹脂製中通し釣竿を製作するには、まず図１の（イ）に
示すようにテ−パマンドレル１上に細巾テ−プまたは細
紐２をギャップ巻きする。この細巾テ−プまたは細紐２
の巻回において、細巾テ−プまたは細紐をマンドレル１
に密接させるには、マンドレル１の径をｒ、細巾テ−プ
または細紐２の曲げ弾性率をＥ、断面二次モ−メントを
Ｉ、細巾テ−プまたは細紐２の厚さをｈ、巾をｂ、細巾
テ−プまたは細紐２の単位断面積あたりの最小の引張り
応力をｆ（このｆより小なる引張り応力の場合は細巾テ
−プまたは細紐が浮きあがる）、細巾テ−プまたは細紐
２に作用するモ−メントをＭとすれば、Embodiments of the present invention will be described below with reference to the drawings. 1 (a) to 1 (d) of FIG.
1 is a drawing showing a method of forming a through fishing rod using a release member for forming a fishing rod according to the present invention. In order to manufacture a fishing rod made of fiber reinforced resin by this method, first, a narrow tape or a thin string 2 is wound around a tape mandrel 1 as shown in FIG. This narrow tape or thin string 2
In the winding, a narrow tape or a thin string is
The diameter of the mandrel 1 is r, the bending modulus of the narrow tape or the thin string 2 is E, the secondary moment of section is I, and the thickness of the narrow tape or the thin string 2 is H, width b, and minimum tensile stress per unit cross-sectional area of the narrow tape or the thin string 2 (for a tensile stress smaller than f, the narrow tape or the thin string rises). ), If the moment acting on the narrow tape or the thin string 2 is M,
【０００８】ｒ＝ＥＩ／Ｍ Ｉ＝ｂｈ3／１２ Ｍ＝ｒ・ｂｈｆ 等の関係から[0008] from the relationship, such as r = EI / M I = bh 3/12 M = r · bhf
【０００９】ｆ＝Ｅｈ2／（１２ｒ2） が成立する。F = Eh 2 / (12r 2 ) holds.
【００１０】このようにしてマンドレル１に細巾テ−プ
または細紐２をギャップ巻きすれば、更に図１の（ロ）
に示すように繊維強化樹脂材３、例えば炭素繊維（ロ−
ビング）強化エポキシ樹脂プリプレグを巻回し、而るの
ち、加圧処理しながら加熱して樹脂を硬化させる。この
ようにして繊維強化樹脂材３を硬化させたのちは、図１
の（ハ）に示すように、マンドレルを引き抜き、更に図
１の（ニ）に示すように、細巾テ−プまたは細紐を引張
りにより除去し、これにて中通し釣竿の成形を終了す
る。When the narrow tape or the thin cord 2 is wound around the mandrel 1 in the gap as described above, the structure shown in FIG.
As shown in FIG. 1, the fiber reinforced resin material 3, for example, carbon fiber (b)
Bing) A reinforced epoxy resin prepreg is wound, and then heated and cured while applying pressure. After curing the fiber reinforced resin material 3 in this manner, FIG.
As shown in FIG. 1C, the mandrel is pulled out, and as shown in FIG. 1D, the narrow tape or the thin string is removed by pulling, thereby completing the formation of the through fishing rod. .
【００１１】図２の（イ）〜（ニ）は本発明に係る細巾
テ−プまたは細紐の異なる例を示し、オレフィン系合成
樹脂製であり、融点が前記加熱硬化の温度よりも高く、
しかも曲げ弾性率が７０００ｋｇ／ｃｍ2以下とされて
おり、厚みまたは高さ（ｈ）は、通常０．５ｍｍ〜０．
１ｍｍとされる。この細巾テ−プまたは細紐の製造に
は、オレフィン系合成樹脂をＴダイ法またはインフレ−
ション法によりフィルムに成形し、これを所定の巾に切
断する方法、オレフィン系合成樹脂を長方形〔図２の
（ロ）〕や台形〔図２の（ハ）〕や半円形〔図２の
（ニ）〕に押出し成形する方法を使用できる。上記エポ
キシ樹脂プリプレグの加熱・硬化条件は通常１４０℃〜
１６０℃×２時間〜３０分である。FIGS. 2 (a) to 2 (d) show different examples of the narrow tape or the thin cord according to the present invention, which are made of an olefin-based synthetic resin, and whose melting point is higher than the heat curing temperature. ,
Moreover, the flexural modulus is 7000 kg / cm 2 or less, and the thickness or height (h) is usually 0.5 mm to 0.5 mm.
1 mm. For the production of this narrow tape or string, an olefin-based synthetic resin is produced by a T-die method or an inflation method.
The olefin synthetic resin is formed into a rectangular shape ((b) in FIG. 2), a trapezoidal shape ((c) in FIG. 2) or a semicircle (( D) Extrusion molding method can be used. The heating and curing conditions of the above epoxy resin prepreg are usually 140 ° C.
160 ° C. × 2 hours to 30 minutes.
【００１２】上記オレフィン系合成樹脂としてはポリメ
チルペンテン（融点２３５℃、曲げ弾性率５０００〜１
３０００kg/cm2、破断強度１．５〜１．８kg/mm2、破断
伸び２０〜１２０％、線膨張係数１２×１０-5/℃)のう
ち曲げ弾性率が７０００ｋｇ／ｃｍ2以下のもの、ポリ
プロピレン（融点１３７〜１７６℃、曲げ弾性率６００
０〜１００００kg/cm2、破断強度３．５kg/mm2、破断伸
び２００〜７００％、線膨張係数５．８〜１０×１０-5
/℃)のうち、融点が１５０℃以上でかつ曲げ弾性率が７
０００ｋｇ／ｃｍ2以下のもの（ポリプロピレンの単一
ホモポリマ−、高融点ポリマ−とのコポリマ−）を使用
できる。その外、ポリメチルペンテンとポリプロピレン
との混合体、高密度ポリエチレンや超高分子量ポリエチ
レンも使用できる。また、滑剤やアンチブロッキング剤
の添加により離型性を向上させることもできる。As the olefin-based synthetic resin, polymethylpentene (melting point: 235 ° C., flexural modulus: 5000 to 1)
3000 kg / cm 2, breaking strength 1.5~1.8kg / mm 2, elongation at break 20% to 120%, those of the flexural modulus of the linear expansion coefficient 12 × 10- 5 / ℃) of 7000 kg / cm 2 or less, Polypropylene (melting point 137-176 ° C, flexural modulus 600
0~10000kg / cm 2, breaking strength 3.5 kg / mm 2, elongation at break 200-700%, a linear expansion coefficient of 5.8-10 × 10- 5
/ ° C) has a melting point of 150 ° C or higher and a flexural modulus of 7
000 kg / cm 2 or less (a single homopolymer of polypropylene, a copolymer with a high melting point polymer) can be used. In addition, a mixture of polymethylpentene and polypropylene, high-density polyethylene or ultra-high-molecular-weight polyethylene can also be used. Further, the releasability can be improved by adding a lubricant or an anti-blocking agent.
【００１３】本発明に係る釣竿成形用離型部材において
は、曲げ弾性率Ｅが７０００ｋｇ／ｃｍ2以下という低
曲げ弾性率のものを使用しているから、式から明らか
な通りマンドレルに巻き付ける時の引張り応力ｆを小に
でき、釣竿成形用離型部材の伸びをよく防止でき釣竿成
形用離型部材の断面積や外郭を当初のままに保持でき
る。また、プリプレグの加熱硬化時、釣竿成形用離型部
材の分子鎖の結合力が低下して上記引張り応力ｆにより
分子鎖が伸びても、その応力ｆが小さくためにその伸び
を僅かにとどめ得、加熱硬化中においても釣竿成形用離
型部材の伸びをよく防止して釣竿成形用離型部材の断面
積や外郭を当初のままに保持できる。従って、プリプレ
グの加熱硬化終了時の段階においても、釣竿成形用離型
部材の断面を当初のままによく保持でき、その釣竿成形
用離型部材を型とする溝と山とを所定の寸法通りに形成
できる。In the release member for forming a fishing rod according to the present invention, a material having a low bending elastic modulus E of 7000 kg / cm 2 or less is used. The tensile stress f can be reduced, the elongation of the release member for forming a fishing rod can be prevented well, and the cross-sectional area and outer contour of the release member for forming a fishing rod can be maintained as they are. Further, when the prepreg is heat-cured, even if the molecular chain of the releasing member for fishing rod molding is reduced and the molecular chain is elongated due to the above-mentioned tensile stress f, the elongation can be slightly suppressed because the stress f is small. In addition, even during the heat curing, the elongation of the releasing member for fishing rod formation can be prevented well, and the cross-sectional area and outer shell of the releasing member for fishing rod molding can be maintained as they were at the beginning. Therefore, even at the stage of completion of the heat curing of the prepreg, the cross section of the releasing member for fishing rod molding can be well maintained as it was at the beginning, and the groove and the mountain using the releasing member for fishing rod molding as the mold have the predetermined dimensions. Can be formed.
【００１４】なお、曲げ弾性率は分子鎖構造に依存し、
分子鎖が堅牢である程、曲げ弾性率が高くなると共に破
断強度も高くなる。而るに、本発明に係る釣竿成形用離
型部材においては、曲げ弾性率を７０００ｋｇ／ｃｍ2
以下としているが、１００〜３００ｋｇ／ｃｍ2程度の
破断強度を付与でき、引張りによる分子配向で破断強度
が増加すること、釣竿成形用離型部材のマンドレル巻き
付けの螺旋進行方向と反対方向に引っ張って低剥離力で
釣竿成形用離型部材を引張り除去すること（いわゆる１
８０°ピ−ル方向で剥離する）等により釣竿成形用離型
部材の引張り除去も円滑に行い得るThe flexural modulus depends on the molecular chain structure.
The stronger the molecular chain, the higher the flexural modulus and the higher the breaking strength. Thus, in the release member for forming a fishing rod according to the present invention, the flexural modulus is set to 7000 kg / cm 2.
Although it is assumed to be as follows, it is possible to impart a breaking strength of about 100 to 300 kg / cm 2, increase the breaking strength by molecular orientation by pulling, and pull in a direction opposite to the spiral traveling direction of the mandrel winding of the release member for fishing rod molding. Pulling off the release member for fishing rod molding with low peeling force (so-called 1
(Peeling in the direction of 80 ° peel), etc., so that the removal of the release member for forming a fishing rod can be performed smoothly.
【００１５】[0015]
【実施例】〔実施例１〕融点２３５℃のポリメチルペン
テン（三井石油化学工業社製ＭＸ００２）をＴダイで厚
さ０．３ｍｍのフィルムに押出し成形し、これを巾５ｍ
ｍに切断して釣竿成形用離型部材を得た。曲げ弾性率は
４８００ｋｇ／ｃｍ2、引張り破断強度は１９０ｋｇ／
ｃｍ2であった。この釣竿成形用離型部材をテ−パ−マ
ンドレルに１．０ｍｍのギャップでギャップ巻きし、そ
の上に炭素繊維強化エポキシ樹脂プリプレグを巻回し、
加圧処理しながら１５０℃×１時間で加熱して樹脂を硬
化させ、ついでマンドレルを引き抜き、更に釣竿成形用
離型部材を引張り除去して最小外径３ｍｍ、最大外径２
０ｍｍ、長さ２．１ｍの中通し釣竿を製作した。中通し
釣竿を縦に切断して内面を観察したところ、螺旋状凸部
が良好に成形されており、山巾は１．０ｍｍ、溝巾は
５．０ｍｍであった。[Example 1] Polymethylpentene having a melting point of 235 ° C (MX002 manufactured by Mitsui Petrochemical Industry Co., Ltd.) was extruded with a T-die into a film having a thickness of 0.3 mm, and this was 5 m wide.
m to obtain a release member for forming a fishing rod. The flexural modulus is 4800 kg / cm 2 and the tensile strength at break is 190 kg / cm 2 .
cm 2 . This fishing rod forming release member is wound around a taper mandrel with a gap of 1.0 mm, and a carbon fiber reinforced epoxy resin prepreg is wound thereon.
The resin is cured by heating at 150 ° C. × 1 hour while applying a pressure treatment, then the mandrel is pulled out, and the releasing member for fishing rod molding is pulled and removed to obtain a minimum outer diameter of 3 mm and a maximum outer diameter of 2 mm.
A through fishing rod having a length of 0 mm and a length of 2.1 m was manufactured. When the inside fishing rod was cut vertically and the inner surface was observed, the spiral projection was well formed, the peak width was 1.0 mm, and the groove width was 5.0 mm.
【００１６】〔実施例２〕融点１５８℃のポリプロピレ
ン（住友化学社製ＦＡ８１１２）をインフレ−ション法
で厚さ０．３ｍｍのフィルムに押出し成形し、これを巾
５ｍｍに切断して釣竿成形用離型部材を得た。曲げ弾性
率は６１００ｋｇ／ｃｍ2、引張り破断強度は３９０ｋ
ｇ／ｃｍ2であった。この釣竿成形用離型部材を使用し
て実施例１と同様にして中通し釣竿を製作した。中通し
釣竿を縦に切断して内面を観察したところ、螺旋状凸部
が良好に成形されており、山巾は０．８ｍｍ、溝巾は
５．０ｍｍであった。Example 2 Polypropylene having a melting point of 158 ° C. (FA8112 manufactured by Sumitomo Chemical Co., Ltd.) was extruded into a 0.3 mm-thick film by the inflation method, cut into a width of 5 mm, and separated for fishing rod molding. A mold member was obtained. Flexural modulus is 6100 kg / cm 2 , tensile strength at break is 390k
g / cm 2 . A through fishing rod was manufactured in the same manner as in Example 1 using the releasing member for forming a fishing rod. When the inside fishing rod was cut vertically and the inner surface was observed, the spiral projection was well formed, the peak width was 0.8 mm, and the groove width was 5.0 mm.
【００１７】〔比較例１〕厚さ０．４ｍｍのポリエチレ
ンテレフタレ−トフィルムを巾５ｍｍに切断したもの
（引張り破断強度７００ｋｇ／ｃｍ2、曲げ弾性率２４
０００ｋｇ／ｃｍ2）を釣竿成形用離型部材として使用
し、実施例１と同様の中通し釣竿の製作を試みた。しか
しながら、マンドレルの最小外径部近傍に対して上記
式の引張り応力が引張り破断強度に近くなり、マンドレ
ルへの釣竿成形用離型部材の巻き付けに失敗し、中通し
釣竿の製作には至らなかった。Comparative Example 1 A polyethylene terephthalate film having a thickness of 0.4 mm cut into a width of 5 mm (tensile breaking strength 700 kg / cm 2 , flexural modulus 24)
000 kg / cm 2 ) was used as a mold release member for forming a fishing rod, and an attempt was made to manufacture a through fishing rod similar to that in Example 1. However, the tensile stress of the above formula becomes close to the tensile breaking strength in the vicinity of the minimum outer diameter portion of the mandrel, and the winding of the releasing member for forming a fishing rod on the mandrel failed, and the production of the through fishing rod did not occur. .
【００１８】〔比較例２〕低密度ポリエチレンフィルム
（融点１２４℃）を１５メガラッドの電子線の照射で架
橋した厚さ０．３ｍｍの架橋ポリエチレンフィルムを巾
５ｍｍに切断したもの（引張り破断強度３００ｋｇ／ｃ
ｍ2、曲げ弾性率３６００ｋｇ／ｃｍ2）を釣竿成形用離
型部材として使用し、実施例１と同様にして中通し釣竿
を製作した。中通し釣竿を縦に切断して内面を観察した
ところ、山巾が平均０．２ｍｍ、溝巾が平均５．２ｍｍ
であり、凹凸寸法の崩れが顕著であった。この凹凸寸法
の崩れの原因は、上記融点１２４℃での離型部材の熱膨
張が大きく、この成形部材の顕著な熱膨張のもとでプリ
プレグが硬化されたことによるものと推定される。これ
に対し、本発明に係る釣竿成形用離型部材においては、
融点をプリプレグの硬化温度よりも高くしてあるから、
かかる不具合の発生を排除できる。Comparative Example 2 A low-density polyethylene film (melting point: 124 ° C.) was cross-linked by irradiation with a 15-megarad electron beam, and a cross-linked polyethylene film having a thickness of 0.3 mm was cut to a width of 5 mm (tensile breaking strength: 300 kg / c
m 2 and a flexural modulus of 3600 kg / cm 2 ) were used as a releasing member for forming a fishing rod, and a through fishing rod was produced in the same manner as in Example 1. When the inside fishing rod was cut vertically and the inner surface was observed, the peak width was 0.2 mm on average and the groove width was 5.2 mm on average.
And the collapse of the concave and convex dimensions was remarkable. It is presumed that the cause of the collapse of the uneven size is that the prepreg is hardened under the remarkable thermal expansion of the molded member due to the large thermal expansion of the release member at the melting point of 124 ° C. In contrast, in the release member for forming a fishing rod according to the present invention,
Because the melting point is higher than the curing temperature of the prepreg,
The occurrence of such a defect can be eliminated.
【００１９】[0019]
【発明の効果】本発明によれば、オレフィン系合成樹脂
製の釣竿成形用離型部材で所望の正確な溝及び山寸法の
凹凸内面を有する維強化樹脂製中通し釣竿を成形でき、
使用済の釣竿成形用離型部材の焼却処理を容易に行い得
る。According to the present invention, it is possible to form a through fishing rod made of a fiber-reinforced resin having a desired accurate groove and a concave and convex inner surface of a mountain size with a release member for molding a fishing rod made of an olefin-based synthetic resin.
It is possible to easily incinerate the used releasing member for forming a fishing rod.
【図１】本発明に係る釣竿成形用離型部材が使用される
繊維強化樹脂製中通し釣竿の成形方法の作業手順を示す
図面である。FIG. 1 is a view showing a working procedure of a method of forming a fiber-reinforced resin hollow fishing rod in which a release member for forming a fishing rod according to the present invention is used.
【図２】本発明に係る釣竿成形用離型部材の異なる例を
示す図面である。FIG. 2 is a drawing showing a different example of a release member for forming a fishing rod according to the present invention.
１ マンドレル ２ 細巾テ−プまたは細紐 ３ 繊維強化樹脂材 DESCRIPTION OF SYMBOLS 1 Mandrel 2 Narrow tape or string 3 Fiber reinforced resin material
Claims (3)
ャップ巻きし、この細巾テ−プまたは細紐巻回マンドレ
ル上に繊維強化樹脂材を層状に巻回し、該巻回層の加熱
硬化後、マンドレル及び巻回細巾テ−プまたは細紐を除
去して硬化層内面を螺旋状溝を有する凹凸面とする繊維
強化樹脂製中通し釣竿の成形方法において使用する前記
細巾テ−プまたは細紐であり、オレフィン系合成樹脂製
で融点が前記加熱硬化の温度よりも高いことを特徴とす
る繊維強化樹脂製中通し釣竿成形用離型部材。1. A narrow tape or a thin string is gap-wound on a mandrel, and a fiber reinforced resin material is layered on the narrow tape or a thin string winding mandrel. After the heat curing, the mandrel and the wound narrow tape or the thin string are removed to make the inner surface of the hardened layer an uneven surface having a spiral groove. A mold release member for forming a through rod made of fiber reinforced resin, wherein the release member is made of an olefin-based synthetic resin and has a melting point higher than the temperature of the heat curing.
ある請求項１記載の繊維強化樹脂製中通し釣竿成形用離
型部材。2. The release member for forming a fiber-reinforced resin hollow fishing rod according to claim 1, having a flexural modulus of 7000 kg / cm 2 or less.
たはポリメチルペンテンあるいは両者の混合物である請
求項１または２記載の繊維強化樹脂製中通し釣竿成形用
離型部材。3. The release member for forming a fishing rod according to claim 1, wherein the olefin-based synthetic resin is polypropylene or polymethylpentene or a mixture of both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10073135A JPH11243815A (en) | 1998-03-06 | 1998-03-06 | Mold-releasing member for molding internally threaded fishing rod made of fiber reinforced resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10073135A JPH11243815A (en) | 1998-03-06 | 1998-03-06 | Mold-releasing member for molding internally threaded fishing rod made of fiber reinforced resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11243815A true JPH11243815A (en) | 1999-09-14 |
Family
ID=13509468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10073135A Pending JPH11243815A (en) | 1998-03-06 | 1998-03-06 | Mold-releasing member for molding internally threaded fishing rod made of fiber reinforced resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11243815A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180003471A1 (en) * | 2016-07-01 | 2018-01-04 | Aldila Golf Corporation | Arrow shaft with internal bracing |
-
1998
- 1998-03-06 JP JP10073135A patent/JPH11243815A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180003471A1 (en) * | 2016-07-01 | 2018-01-04 | Aldila Golf Corporation | Arrow shaft with internal bracing |
| US10596770B2 (en) * | 2016-07-01 | 2020-03-24 | Aldila Golf Corporation | Arrow shaft with internal bracing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4770834A (en) | Method for continuous molding of a rod-like product | |
| JPS63182136A (en) | Manufacture of fiber reinforced rubber hose | |
| JPH11243815A (en) | Mold-releasing member for molding internally threaded fishing rod made of fiber reinforced resin | |
| JP6391317B2 (en) | Composite molded article and manufacturing method thereof | |
| GB2178998A (en) | Fishing rod manufacturing method | |
| US7582234B2 (en) | Producing method of polymer optical waveguide | |
| JP5161903B2 (en) | Method for manufacturing metal / FRP pipe, metal / FRP pipe, and method for removing thermal residual stress of metal / FRP pipe | |
| EP1088645A3 (en) | Method and apparatus for manufacturing a core for winding a web material, and winding core produced thereby | |
| JP3115023B2 (en) | Manufacturing method of fiber reinforced resin molded product | |
| JP2772105B2 (en) | Vulcanization of tubular articles | |
| JPH10166468A (en) | Manufacture of thermoplastic resin pipe and device therefor | |
| JP4776266B2 (en) | Rubber molding apparatus and rubber molding method | |
| JPH042165B2 (en) | ||
| CN212925779U (en) | Carbon fiber composite material rib with spiral resin ribs at two ends | |
| JPH05293908A (en) | Production of fiber reinforced thermoplastic resin pipe | |
| JPH0280212A (en) | Plastic molding mold | |
| JPH01198343A (en) | Manufacture of cylindrical carbon/carbon composite material | |
| KR960004669B1 (en) | Plastic tube, apparatus and method for manufacturing the same | |
| JP3805391B2 (en) | Polypropylene film for processing fiber-reinforced plastic and method for producing the same | |
| JP2004122683A (en) | Manufacturing method of fiber reinforced thermoplastic resin ring | |
| JPS6033520A (en) | Fiber-reinforced optical fiber and its manufacture | |
| CN118290864A (en) | Tearable heat-shrinkable material, tearable heat-shrinkable sleeve and preparation method | |
| JPH01152045A (en) | Method and apparatus for producing hose | |
| JPS62129806A (en) | Optical fiber unit and its manufacture | |
| JPH0994867A (en) | Preparation of hollow molded article |