JP2617210B2 - Fishing rod molding method - Google Patents
Fishing rod molding methodInfo
- Publication number
- JP2617210B2 JP2617210B2 JP63231582A JP23158288A JP2617210B2 JP 2617210 B2 JP2617210 B2 JP 2617210B2 JP 63231582 A JP63231582 A JP 63231582A JP 23158288 A JP23158288 A JP 23158288A JP 2617210 B2 JP2617210 B2 JP 2617210B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon fiber
- layer
- tape
- wound
- thin
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000000465 moulding Methods 0.000 title description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 33
- 239000004917 carbon fiber Substances 0.000 claims description 33
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 33
- 239000000835 fiber Substances 0.000 claims description 21
- 238000004804 winding Methods 0.000 claims description 13
- 229920003002 synthetic resin Polymers 0.000 claims description 7
- 239000000057 synthetic resin Substances 0.000 claims description 7
- 229920001187 thermosetting polymer Polymers 0.000 claims description 5
- 238000007796 conventional method Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 11
- 238000005452 bending Methods 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000013007 heat curing Methods 0.000 description 2
- 238000013001 point bending Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K87/00—Fishing rods
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Fishing Rods (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は釣竿の成形方法に関する。The present invention relates to a fishing rod forming method.
（従来技術） 従来におけるカーボン製の釣竿の中に引揃カーボン繊
維シートをその巻回方向を各層ごとに変化させて積層形
成したものがある。(Prior Art) There is a conventional carbon fishing rod formed by laminating aligned carbon fiber sheets by changing the winding direction for each layer.
上記釣竿の成形方法を具体的に説明すると、マンドレ
ルの外周に引揃カーボン繊維シートをその繊維を円周方
向へ向けて巻回して第１層を形成し、次いでこの外周に
同じ厚さの引揃カーボン繊維シートをその繊維を軸方向
へ向けて巻回して第２層を積層している。More specifically, the method of forming the fishing rod will be described. A aligned carbon fiber sheet is wound around the outer circumference of the mandrel to form a first layer by winding the fibers in the circumferential direction, and then the same thickness is drawn on the outer circumference. The second layer is laminated by winding the aligned carbon fiber sheet with the fibers oriented in the axial direction.
従来のカーボン製釣竿は、上記した様に繊維を竿の円
周方向に向けて巻回された第１層で竿の円周方向、即ち
耐潰れ強度を確保し、且つ、軸方向へ向けて巻回した第
２層で竿の曲げ方向の強度を確保するものであり、この
第１及び第２層を基本構造とし、さらにこの外周にカー
ボンヤーン、若しくはカーボンヤーンとカーボンテープ
とを間隙を開けながら螺旋状に捲付けて構成している。As described above, the conventional carbon fishing rod has a first layer in which the fiber is wound in the circumferential direction of the rod so as to ensure the circumferential direction of the rod, that is, the crush resistance, and in the axial direction. The wound second layer secures the strength in the bending direction of the rod. The first and second layers have a basic structure, and a carbon yarn or a carbon yarn and a carbon tape are formed around the outer periphery of the first and second layers. While being wound spirally.
螺旋状に捲付けた第３層は竿の径方向と捩れ強度を増
大させる働きがある。しかし、上記した第３層は竿の外
周に螺旋模様を施すことを主眼して大きく間隙を開けて
捲付けたものであるから補強効果は期待できなかった。The spirally wound third layer functions to increase the radial direction and torsional strength of the rod. However, since the above-mentioned third layer was wound with a large gap with a view to spirally forming the outer periphery of the rod, no reinforcing effect could be expected.
従って、竿の円周方向の強度は主に第１層を十分に厚
くすることによって確保しているので重量の増大を招
き、また、第３層による捩れ強度も十分ではなかった。Therefore, the strength of the rod in the circumferential direction is secured mainly by making the first layer sufficiently thick, which causes an increase in weight, and the torsional strength of the third layer is not sufficient.
（発明が解決しようとする課題） 本発明の課題は、上記した釣竿における第３層を合理
的に巻回し、竿の耐潰れ強度及び曲げ強度の増大を重量
増加を招くことなく実現し得る成形方法を提供すること
にある。(Problem to be Solved by the Invention) An object of the present invention is to form a fishing rod capable of rationally winding the third layer of the fishing rod and realizing an increase in crush resistance and bending strength of the rod without increasing weight. It is to provide a method.
（課題を解決する為の手段） 上記した課題を解決する為に本発明の釣竿の成形方法
は、熱硬化性合成樹脂を含浸した引揃カーボン繊維シー
トとこれにより薄手の引揃カーボン繊維シートとをそれ
らの繊維が相互に直交するように貼合わせ、この貼合わ
せシートを薄手の引揃カーボン繊維シートを内側に且つ
その繊維を円周方向へ向けてマンドレルの外周に巻回
し、この貼合わせシートの外周に熱硬化性合成樹脂を含
浸させた薄手の引揃カーボン繊維テープを該テープの縁
を重ね合わせながら螺旋状に捲付け、以下常法により各
繊維層を一体化するものである。(Means for Solving the Problems) In order to solve the above-mentioned problems, a method for forming a fishing rod according to the present invention comprises a aligned carbon fiber sheet impregnated with a thermosetting synthetic resin, and a thin aligned carbon fiber sheet. Are bonded so that their fibers are orthogonal to each other, and the bonded sheet is wound around the outer periphery of the mandrel with the thin aligned carbon fiber sheet inward and the fibers directed in the circumferential direction. A thin aligned carbon fiber tape impregnated with a thermosetting synthetic resin is spirally wound with the edges of the tape overlapped, and the respective fiber layers are integrated by a conventional method.
（作用） 以上の手段によれば、引揃カーボン繊維シートとこれ
より薄手の引揃カーボン繊維シートとを貼合わせると、
変形し易い薄手の引揃カーボン繊維シートは比較的厚く
且つ変形しずらい引揃カーボン繊維シートと貼合わされ
て、マンドレルに巻回するのに適した厚さの貼合わせシ
ートとなる。(Operation) According to the above means, when the aligned carbon fiber sheet and the thinner aligned carbon fiber sheet are attached to each other,
The thin aligned carbon fiber sheet that is easily deformed is bonded to a relatively thick and hardly deformed aligned carbon fiber sheet to form a bonded sheet having a thickness suitable for winding around a mandrel.
上記した貼合わせシートをマンドレルに巻回し、さら
に、この貼合わせシートの外周に薄手の引揃カーボン繊
維テープを該テープの縁を重ね合わせながら螺旋状に捲
付けると、繊維を軸方向に向けて巻回される第２層の内
側及び外側に、薄手の繊維が円周方向へ向けて巻回され
る第１層と、薄手の繊維が隙間なく螺旋状に捲かれる第
３層が形成される。When the above-mentioned laminated sheet is wound around a mandrel, and further, a thin aligned carbon fiber tape is spirally wound on the outer periphery of the laminated sheet while overlapping the edges of the tape, and the fibers are directed in the axial direction. A first layer in which the thin fibers are wound in the circumferential direction and a third layer in which the thin fibers are spirally wound without any gap are formed on the inside and outside of the wound second layer. .
そして、繊維が全面的且つ螺旋に捲かれる第３層は、
竿の円周方向と軸方向の強度を同時に増大せしめる。And the third layer in which the fibers are spirally wound entirely,
Increase the circumferential and axial strength of the rod at the same time.
（発明の効果） 本発明の成形方法は、繊維を竿の円周方向へ向けて巻
回する第１層の引揃カーボン繊維シートに薄手のものを
用いると共に、第３層として薄手の引揃カーボン繊維テ
ープを該テープの縁部を重ね合わせながら螺旋状に捲付
けるものであるから、繊維が螺旋状となって全面的に巻
回される第３層によって、竿の耐潰れ強度と曲げ強度と
を同時に向上させることができ、しかも、第１層及び第
２層に薄手の繊維を用いて軽量化しているので竿の重量
増加を招くこともない。(Effect of the Invention) The forming method of the present invention uses a thin carbon fiber sheet of the first layer for winding the fiber in the circumferential direction of the rod, and uses the thin carbon fiber sheet as the third layer. Since the carbon fiber tape is wound spirally while overlapping the edges of the tape, the third layer in which the fibers are spirally wound and wound over the entire surface provides the crush resistance and bending strength of the rod. Can be improved at the same time, and the weight of the rod does not increase because the weight is reduced by using thin fibers for the first layer and the second layer.
また、薄手の引揃カーボンシートはそのままでは変形
し易くて巻回作業が難しいが、該シートをこれより厚手
の引揃カーボンシートと貼合わせてからマンドレル外周
に巻回させているので、第１層に薄手の引揃カーボンシ
ートを用いてもマンドレルに対する巻回作業を円滑に行
なうことができる。Although the thin aligned carbon sheet is easily deformed as it is and is difficult to wind, the sheet is laminated to a thicker aligned carbon sheet and then wound around the mandrel. Even if a thin aligned carbon sheet is used for the layer, the winding operation on the mandrel can be performed smoothly.
（実施例） 以下、本発明の一実施例を図面に基づいて説明する。Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
第１図中、（１′）及び（２′）はカーボン繊維を一
方向に引揃えて熱硬化性合成樹脂、例えばエポキシ樹脂
を含浸させ半硬化させた引揃カーボン繊維シートのプリ
プレグである。In FIG. 1, (1 ') and (2') are prepregs of aligned carbon fiber sheets in which carbon fibers are aligned in one direction and impregnated with a thermosetting synthetic resin, for example, an epoxy resin, and semi-cured.
プリプレグ（２′）は従来の成形方法で用いる第２層
のプリプレグと同様な厚さである100〜250g/m2程度のも
のを用いて、繊維の方向を竿の軸方向へ向けて引揃えて
あり、また、プリプレグ（１′）は上記プリプレグ
（２′）よりも薄手な25〜40g/m2程度のものを用いて、
繊維の方向を竿の円周方向へ向けて引揃えてある。Prepreg (2 ') used of about 100 to 250 g / m 2 is the same thickness and prepreg of the second layer used in the conventional molding method,引揃example toward the direction of the fibers in the axial direction of the rod And the prepreg (1 ') is thinner than the prepreg (2') and is about 25 to 40 g / m 2 ,
The fibers are aligned in the circumferential direction of the rod.
上記両プリプレグ（１′）（２′）は、成形する竿よ
りも一回り小径なマンドレル（ｂ）の外周に一周以上巻
回される様に外形を台形状に切断すると共に、半硬化樹
脂の粘性を利用して貼合わせ、一枚状の貼合わせシート
（ａ）としておく。The prepregs (1 ') and (2') are cut into a trapezoidal shape so as to be wound one or more times around the outer circumference of a mandrel (b) having a diameter slightly smaller than the rod to be molded, and are formed of semi-cured resin. Lamination is performed using viscosity to form a single laminated sheet (a).
上記した如き両プリプレグ（１′）（２′）の貼合わ
せシート（ａ）は薄手のプリプレグ（１′）を内側にし
て、その一側縁をマンドレル（ｂ）に沿ってアイロン付
けにより貼着する。次いで、ローリング装置によって貼
合わせシート（ａ）をマンドレル外周に加圧して捲付け
プリプレグ（１′）（２′）間の密着性を良くすると共
に、樹脂中に含まれる気泡を押し出す（第２図）。The laminated sheet (a) of both prepregs (1 ') and (2') as described above is attached by ironing one side edge along the mandrel (b) with the thin prepreg (1 ') inside. I do. Next, the bonded sheet (a) is pressed against the outer periphery of the mandrel by a rolling device to improve the adhesion between the wound prepregs (1 ′) and (2 ′) and to push out bubbles contained in the resin (FIG. 2). ).
前記した薄手のプリプレグ（１′）自体は薄く変形し
易いので、そのままでは巻回作業が困難である。しか
し、上述した様に薄得のプリプレグ（１′）を比較的厚
手なプリプレグ（２′）と貼り合わせた後にマンドレル
（ｂ）に対して巻回することにより、薄手のプリプレグ
（１′）を用いても円滑に巻回作業を行なうことができ
る。Since the thin prepreg (1 ') itself is thin and easily deformed, it is difficult to perform a winding operation as it is. However, as described above, the thin prepreg (1 ') is bonded to the relatively thick prepreg (2'), and then wound around the mandrel (b), thereby forming the thin prepreg (1 '). Even if used, the winding operation can be performed smoothly.
第３層としてプリプレグ（２′）の上から捲付ける薄
手の引揃カーボン繊維テープ（３′）はエポキシ樹脂を
含浸させた薄手のカーボン繊維シートを3mm〜10mm程度
の幅で一方向に引揃えたものであり、前記マンドレル
（ｂ）の一端から該テープ（３′）の縁を重ね合わせな
がら螺旋状に捲付ける（第３図，第４図）。As a third layer, a thin aligned carbon fiber tape (3 ') wound from above the prepreg (2') is a thin carbon fiber sheet impregnated with epoxy resin and aligned in one direction with a width of about 3mm to 10mm. The tape is spirally wound from one end of the mandrel (b) while overlapping the edge of the tape (3 ') (FIGS. 3 and 4).
これにより、引揃カーボン繊維テープ（３′）は隙間
なく全面に巻回され、薄手のカーボン繊維が螺旋状に走
る第３層が形成される。As a result, the aligned carbon fiber tape (3 ') is wound around the entire surface without any gap, and a third layer in which thin carbon fibers run spirally is formed.
また、上記した引揃カーボン繊維テープ（３′）は第
１層及び第２層のプリプレグ（１′）（２′）より樹脂
の含浸率を多くとり、これにより、加熱硬化後の表面の
仕上り状態を良好にすることができる。Further, the above-mentioned aligned carbon fiber tape (3 ') has a higher resin impregnation rate than the prepregs (1') and (2 ') of the first and second layers, whereby the surface finish after heat curing is obtained. The condition can be improved.
上記した様に、引揃カーボン繊維テープ（３′）を巻
回した後には、その上からポリプロピレン，ポリエステ
ル等のテープをカーボン繊維テープ（３′）と同様に捲
付けて外側から圧力をかけ、各層相互の密接度を高め
る。As described above, after winding the aligned carbon fiber tape (3 '), a tape of polypropylene, polyester, or the like is wound thereon in the same manner as the carbon fiber tape (3'), and pressure is applied from the outside. Increase the closeness of each layer.
合成樹脂テープを捲付けたならば、マンドレル（ｂ）
ごと焼成炉に入れて加熱して樹脂を完全硬化させ、各層
を一体化する（図示せず）。If synthetic resin tape is wound, mandrel (b)
Each is put into a firing furnace and heated to completely cure the resin, and the respective layers are integrated (not shown).
硬化後、成形された竿部材（Ａ）をマンドレル（ｂ）
より引き抜き、次いで合成樹脂テープを剥離すると共
に、このテープの捲付け後を均ずバフ加工を行い、最外
層にクリアー塗装（４）をして仕上げる。After curing, the formed rod member (A) is replaced with a mandrel (b)
Then, the synthetic resin tape is peeled off, buffing is performed evenly after winding the tape, and the outermost layer is finished with clear coating (4).
上記の如く成形した竿部材（Ａ）は第６図及び第７図
にて示す様に、カーボン繊維を軸方向へ向けて巻回され
る第２層（２）の内側と外側とに、薄手の繊維が円周方
向へ向けて巻回される第１層（１）と、薄手の繊維が隙
間なく螺旋状に捲かれる第３層（３）とが形成される。As shown in FIGS. 6 and 7, the rod member (A) formed as described above is thin on the inside and outside of the second layer (2) around which the carbon fiber is wound in the axial direction. The first layer (1) in which the fibers are wound in the circumferential direction, and the third layer (3) in which the thin fibers are spirally wound without any gap.
而して、螺旋状となって全面的に巻回される第３層
（３）の繊維によって竿部材（Ａ）の耐潰れ強度と曲げ
強度とが同時に向上され、しかも、第１層（１）及び第
３層（３）は軽量である薄手のカーボン繊維を用いてい
るので、重量の増加を招くこともない。Thus, the fiber of the third layer (3), which is spirally wound over the entire surface, simultaneously improves the crush resistance and the bending strength of the rod member (A), and furthermore, the first layer (1) ) And the third layer (3) are made of lightweight thin carbon fiber, so that the weight does not increase.
上記した表１及び表２は、第３層として引揃カーボン
繊維テープを螺旋状に隙間なく巻回したことによる３点
曲げ強度と円周方向の強度の増大効果を示す実験結果で
ある。 Tables 1 and 2 above are the experimental results showing the effect of increasing the three-point bending strength and the circumferential strength by winding the aligned carbon fiber tape as the third layer spirally without any gap.
試験に用いた竿部材（A1）（A2）（A3）は、（A1）が
第３層にカーボンヤーンを隙間を開けて螺旋状に巻回し
たもの、（A2）がカーボンヤーンとカーボンテープとを
隙間を開けながら螺旋に巻回したもの、（A3）は本発明
のものである。Rod member used for the test (A 1) (A 2) (A 3) is, (A 1) which is spirally wound with a gap of carbon yarns in the third layer, (A 2) is carbon (A 3 ) is the present invention in which the yarn and the carbon tape are spirally wound while leaving a gap.
表１及び表２は共にカーボン繊維が円周及び軸方向へ
向けて巻回された第１層及び第２層を全く同じ条件と
し、第３層に巻回するカーボン繊維1gに対する強度を示
している。この結果、本発明に基づいて成形した（A3）
は、３点曲げ強度が（A1）よりも優れている（A2）に対
して16％の強度アップとなり、また、円周方向の強度は
（A2）よりも優れる（A1）よりも15％の強度アップを実
現することが分った。Tables 1 and 2 show the strength for the carbon fiber 1g wound on the third layer under the same conditions for the first layer and the second layer in which the carbon fiber is wound in the circumferential and axial directions. I have. As a result, it was molded according to the present invention (A 3 )
Is a 16% intensity up to three-point bending strength is superior to the (A 1) (A 2) , also, the strength in the circumferential direction is superior than (A 2) from (A 1) It was also found that 15% increase in strength was achieved.
第１図はマンドレルと貼合わせシートを示す一部切欠斜
視図、第２図はマンドレルの外周に貼合わせシートを巻
回した状態を示す一部切欠斜視図、第３図は引揃カーボ
ン繊維テープを巻回する状態を示す斜視図、第４図は同
テープ巻き終えた状態を示す一部切欠斜視図、第５図は
加熱硬化後にマンドレルより引抜いた竿部材を示す一部
切欠斜視図、第６図は成形された竿部材を示す縦断面
図、第７図は第６図のVII−VII線断面図である。 図中 A:竿部材 a:貼合わせシート b:マンドレル １′：プリプレグ（円周方向） ２′：プリプレグ（軸方向） ３′：引揃カーボン繊維シートFIG. 1 is a partially cutaway perspective view showing a mandrel and a laminated sheet, FIG. 2 is a partially cutaway perspective view showing a state in which a laminated sheet is wound around the mandrel, and FIG. 3 is a aligned carbon fiber tape. FIG. 4 is a partially cutaway perspective view showing a state in which the tape has been wound, FIG. 5 is a partially cutaway perspective view showing a rod member pulled out of a mandrel after heat curing, and FIG. FIG. 6 is a longitudinal sectional view showing the formed rod member, and FIG. 7 is a sectional view taken along line VII-VII of FIG. In the figure, A: rod member a: laminated sheet b: mandrel 1 ': prepreg (circumferential direction) 2': prepreg (axial direction) 3 ': aligned carbon fiber sheet
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｂ２９Ｌ 23:00 Continued on the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical indication // B29L 23:00
Claims (1)
繊維シートとこれより薄手の引揃カーボン繊維シートと
をそれらの繊維が相互に直交するように貼合わせ、この
貼合わせシートを薄手の引揃カーボン繊維シートを内側
に且つその繊維を円周方向へ向けてマンドレルの外周に
巻回し、この貼合わせシートの外周に熱硬化性合成樹脂
を含浸させた薄手の引揃カーボン繊維テープを該テープ
の縁を重ね合わせながら螺旋状に捲付け、以下常法によ
り各繊維層を一体化することを特徴とする釣竿の成形方
法。1. A laminated carbon fiber sheet impregnated with a thermosetting synthetic resin and a laminated carbon fiber sheet thinner than this are laminated so that their fibers are orthogonal to each other. The aligned carbon fiber sheet is wound inside and around the mandrel with the fibers directed in the circumferential direction, and a thin aligned carbon fiber tape in which the outer periphery of the bonded sheet is impregnated with a thermosetting synthetic resin is provided. A method for forming a fishing rod, comprising: spirally winding the tape while overlapping the edges of the tape; and integrating the respective fiber layers by a conventional method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63231582A JP2617210B2 (en) | 1988-09-14 | 1988-09-14 | Fishing rod molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63231582A JP2617210B2 (en) | 1988-09-14 | 1988-09-14 | Fishing rod molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0278532A JPH0278532A (en) | 1990-03-19 |
| JP2617210B2 true JP2617210B2 (en) | 1997-06-04 |
Family
ID=16925780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63231582A Expired - Fee Related JP2617210B2 (en) | 1988-09-14 | 1988-09-14 | Fishing rod molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2617210B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3054623B2 (en) * | 1991-06-05 | 2000-06-19 | 株式会社シマノ | Rod material and method of manufacturing the same |
| KR20040022495A (en) * | 2002-09-09 | 2004-03-16 | 임봉규 | Net's frame and the manufacture method for fishhook |
| JP4889463B2 (en) * | 2006-12-07 | 2012-03-07 | 株式会社椿本バルクシステム | Chain conveyor |
-
1988
- 1988-09-14 JP JP63231582A patent/JP2617210B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0278532A (en) | 1990-03-19 |
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