JPH03239526A - Molding of resin molding - Google Patents
Molding of resin moldingInfo
- Publication number
- JPH03239526A JPH03239526A JP3550190A JP3550190A JPH03239526A JP H03239526 A JPH03239526 A JP H03239526A JP 3550190 A JP3550190 A JP 3550190A JP 3550190 A JP3550190 A JP 3550190A JP H03239526 A JPH03239526 A JP H03239526A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- molded product
- molding
- hollow part
- reinforcing material
- 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
- 239000011347 resin Substances 0.000 title claims abstract description 59
- 229920005989 resin Polymers 0.000 title claims abstract description 59
- 238000000465 moulding Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 18
- 239000012779 reinforcing material Substances 0.000 claims description 18
- 238000000071 blow moulding Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 238000007664 blowing Methods 0.000 abstract description 6
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 239000003365 glass fiber Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000009730 filament winding Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14836—Preventing damage of inserts during injection, e.g. collapse of hollow inserts, breakage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/48—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/86—Incorporated in coherent impregnated reinforcing layers, e.g. by winding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ブロー成形によって樹脂成形品を成形する方
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 of molding a resin molded article by blow molding.
（従来の技術）
ブロー成形品は中空部を有するため、一般に十分な剛性
を確保することが困難である。このため従来、実開昭６
２−７５９１６号公報に開示されているように、金属部
材をインサートとして用いてブロー成形を行い、これに
よりブロー成形品の剛性向上を図る工夫がなされていた
。(Prior Art) Since blow-molded products have hollow parts, it is generally difficult to ensure sufficient rigidity. For this reason, conventionally,
As disclosed in Japanese Patent No. 2-75916, blow molding was carried out using a metal member as an insert, thereby improving the rigidity of the blow molded product.
（発明が解決しようとする課題）
しかしながら、上記従来の成形方法では、金属部材を用
いるため樹脂成形品の重量が大幅に増大するという弊害
を生じていた。(Problems to be Solved by the Invention) However, the conventional molding method described above has the disadvantage that the weight of the resin molded product increases significantly because of the use of metal members.
これに対し、外面に凹陥溝が形成された一次成形品をブ
ロー成形により成形した後、この一次成形品の凹陥溝内
に、ガラス繊維等の強化材を含有する樹脂材料を、レジ
ンインジェクション法あるいはフィラメントワインディ
ング法等を用いて充填することにより、樹脂成形品を成
形する方法が考えられる。そして、このようにすれば、
重量の大幅増大を招来することなく、しかも簡単かつ低
コストで、剛性の高い樹脂成形品を得ることができる。In contrast, after a primary molded product with grooves formed on its outer surface is molded by blow molding, a resin material containing a reinforcing material such as glass fiber is added into the grooves of the primary molded product using a resin injection method or A possible method is to mold a resin molded product by filling using a filament winding method or the like. And if you do it like this,
A highly rigid resin molded product can be obtained easily and at low cost without causing a significant increase in weight.
ところが、このような成形方法を採用した場合には、一
次成形品の凹陥溝内に強化材含有樹脂材料を充填する際
に作用する荷重により、一次成形品に変形を来たしやす
い。例えば、レジンインジェクションでは樹脂注入時の
樹脂圧力により、また、フィラメントワインディングで
は繊維を巻き付ける際の繊維張力により、一次成形品が
変形してしまうことが考えられる。そして、このように
一次成形品が変形すると、最終成形品たる樹脂成形品も
変形してしまうこととなる。However, when such a molding method is employed, the primary molded product is likely to be deformed due to the load that is applied when filling the reinforcing material-containing resin material into the grooves of the primary molded product. For example, in resin injection, the primary molded product may be deformed due to the resin pressure when injecting the resin, or in filament winding, due to the fiber tension when winding the fibers. When the primary molded product is deformed in this way, the resin molded product that is the final molded product is also deformed.
本発明は、このような事情に鑑みてされたものであって
、重量を大幅に増大することなく、簡単かつ低コストで
、剛性の高い樹脂成形品を成形することができ、しかも
、樹脂成形品の変形を最小限に押えた上でこれを実現す
ることのできる、樹脂成形品の成形方法を提供すること
を目的とするものである。The present invention was made in view of these circumstances, and it is possible to easily and inexpensively mold a highly rigid resin molded product without significantly increasing the weight. It is an object of the present invention to provide a method for molding a resin molded product, which can achieve this while minimizing deformation of the product.
（課題を解決するための手段）
本発明に係る樹脂成形品の成形方法は、強化材含有樹脂
材料を充填する際、一次成形品に作用する荷重に対抗す
べく、その中空部にガスを供給して該中空部を加圧する
ことにより、上記目的達成を図るようにしたものである
。(Means for Solving the Problems) The method for molding a resin molded product according to the present invention supplies gas to the hollow portion of the primary molded product in order to counteract the load acting on the primary molded product when filling the reinforcing material-containing resin material. The above objective is achieved by pressurizing the hollow portion.
すなわち、外面に凹陥溝が形成された一次成形品をブロ
ー成形により成形した後、この一次成形品の前記凹陥溝
内に強化材含有樹脂材料を充填することにより、樹脂成
形品を成形する方法であって、
前記強化材含有樹脂材料を充填する際、前記一次成形品
の中空部にガスを供給して該中空部を加圧することを特
徴とするものである。That is, a method of molding a resin molded product by blow molding a primary molded product having a groove formed on its outer surface, and then filling the grooves of the primary molded product with a reinforcing material-containing resin material. The present invention is characterized in that when filling the reinforcing material-containing resin material, gas is supplied to the hollow part of the primary molded product to pressurize the hollow part.
（発明の作用および効果）
上記構成に示すように、本発明によれば、外面に凹陥溝
が形成された一次成形品をブロー成形により成形した後
、この一次成形品の凹陥溝内に強化材含有樹脂材料を充
填することにより、樹脂成形品を成形するようになって
いるので、従来の金属部材を用いた場合のように重量の
大幅な増大を招来することなく、簡単かつ低コストで剛
性の高い樹脂成形品を得ることができ、さらに、本発明
によれば、強化材含有樹脂材料を充填する際、次成形品
の中空部にガスを供給して該中空部を加圧するようにな
っているので、充填時の荷重によって生ずる一次成形品
の変形を内圧によって最小限に押えた上で上記効果を得
ることができる。(Operations and Effects of the Invention) As shown in the above configuration, according to the present invention, after a primary molded product having a concave groove formed on its outer surface is molded by blow molding, a reinforcing material is inserted into the concave groove of the primary molded product. Since a resin molded product is formed by filling the resin material, it is possible to easily and inexpensively increase rigidity without causing a significant increase in weight as would be the case when using conventional metal parts. Furthermore, according to the present invention, when filling the reinforcing material-containing resin material, gas is supplied to the hollow part of the next molded product to pressurize the hollow part. Therefore, the above effects can be obtained while minimizing the deformation of the primary molded product caused by the load during filling using the internal pressure.
（実 施 例）
以下添付図面を参照しながら本発明の実施例について詳
述する。(Examples) Examples of the present invention will be described in detail below with reference to the accompanying drawings.
第１図は、本発明に係る樹脂成形品の成形方法の第１実
施例を示すレジンインジェクション工程図であって、第
２図のＩ−１線断面に対応する金型断面図である。また
、第２図は、上記実施例により成形された樹脂成形品を
示す斜視図であり、第３図は、第２図の■−■線断面図
である。FIG. 1 is a resin injection process diagram showing a first embodiment of the method for molding a resin molded article according to the present invention, and is a cross-sectional view of a mold corresponding to the cross section taken along line I-1 in FIG. Further, FIG. 2 is a perspective view showing a resin molded product molded according to the above embodiment, and FIG. 3 is a sectional view taken along the line ■-■ in FIG.
第２および３図に示すように、樹脂成形品ｌＯは、自動
車の着座用シートのシートバックフレームであって、外
周面（外面）に凹陥溝１２ａが形成されたフレーム本体
１２と、このフレーム本体１２の凹陥溝１２ａ内に外周
面と路面−で強化材含有樹脂材料が充填されてなる強化
材含有樹脂層１４とから構成されている。As shown in FIGS. 2 and 3, the resin molded product IO is a seat back frame for a seat for an automobile, and includes a frame body 12 having a recessed groove 12a formed on the outer peripheral surface (outer surface), and this frame body. It is comprised of a reinforcing material-containing resin layer 14 filled with a reinforcing material-containing resin material in twelve concave grooves 12a on the outer peripheral surface and the road surface.
フレーム本体１２は、ブロー成形により一次成形品とし
て成形される。このブロー成形の際、フレーム本体１２
の下端部には、エア吹込み孔１２ｂ（第１図参照）が形
成される。The frame main body 12 is molded as a primary molded product by blow molding. During this blow molding, the frame body 12
An air blowing hole 12b (see FIG. 1) is formed at the lower end of.
そして、この一次成形品たるフレーム本体１２は、第１
図に示すように、その凹陥溝１２ａ内に強化材たるガラ
ス繊維１６がマット状に重ねて配置（接着剤等による貼
付）された後、フレーム本体１２の外形形状に対して凹
陥溝１２ａの部分を拡張した形状のキャビティを形成す
る１対のレジンインジェクション金型１００ 、１０２
内にセットされる。The frame main body 12, which is this primary molded product,
As shown in the figure, after the glass fibers 16 serving as a reinforcing material are placed in a mat-like manner (attached with adhesive or the like) in the recessed groove 12a, the portion of the recessed groove 12a relative to the external shape of the frame body 12 is A pair of resin injection molds 100 and 102 forming a cavity with an expanded shape.
is set within.
金型１０２には、その内面の凹陥溝１２ａと対向する部
分に開口する樹脂通路１０２ａが形成されており、この
樹脂通路１０２には樹脂供給管１０４が接続されている
。この金型１０２には、また、エア吹込み孔１２ｂに連
通ずるようにしてエア供給管１０６が埋設されている。A resin passage 102a is formed in the mold 102 and opens at a portion of the inner surface thereof facing the recessed groove 12a, and a resin supply pipe 104 is connected to the resin passage 102. An air supply pipe 106 is also embedded in this mold 102 so as to communicate with the air blowing hole 12b.
そして、フレーム本体１２が金型１００１０２内にセッ
トされ型締めがなされると、樹脂供給管１０４および樹
脂通路１０２ａを介して溶融した樹脂材料が凹陥溝１２
ａ内に射出されて、強化材含有樹脂層１４（第３図参照
）を形成する。このとき同時に、エア供給管１０Ｂおよ
びエア吹込み孔１２ｂを介して加圧エアがフレーム本体
１２の中空部１２ｅに供給され、該中空部１２ｅが加圧
される。この加圧エアにより、上記樹脂材料の射出圧力
によってフレーム本体１２が変形するのを最小限に押え
ることができる。Then, when the frame body 12 is set in the mold 100102 and the mold is clamped, the molten resin material flows into the concave groove 100102 through the resin supply pipe 104 and the resin passage 102a.
a to form a reinforcing material-containing resin layer 14 (see FIG. 3). At the same time, pressurized air is supplied to the hollow part 12e of the frame body 12 via the air supply pipe 10B and the air blowing hole 12b, and the hollow part 12e is pressurized. This pressurized air can minimize deformation of the frame body 12 due to the injection pressure of the resin material.
第４図は、本発明の第２実施例を示すフィラメントワイ
ンディング工程図である。FIG. 4 is a filament winding process diagram showing a second embodiment of the present invention.
フレーム本体１２がブロー成形により一次成形品として
成形される点は第１実施例と同様であるが、強化材含有
樹脂層１４の形成方法が異なる。This embodiment is similar to the first embodiment in that the frame body 12 is molded as a primary molded product by blow molding, but the method of forming the reinforcing material-containing resin layer 14 is different.
すなわち、強化材たるガラス繊維１Ｂ’がロービングと
して供給され、樹脂槽１１０内で樹脂材料を含浸した後
、フレーム本体１２の凹陥溝１２ａ内に巻き付けられる
ことによって、強化材含有樹脂層１４（第３図参照）が
形成されるようになっている。That is, the glass fiber 1B' serving as the reinforcing material is supplied as a roving, impregnated with a resin material in the resin tank 110, and then wound into the recessed groove 12a of the frame main body 12 to form the reinforcing material-containing resin layer 14 (the third (see figure) is formed.
上記ロービング巻付けのため、フレーム本体１２は、軸
部材１１２により図示矢印六方向に回転せしめられるよ
うになっている。一方、軸部材１１２を支持するスリー
ブ１１４内にはエア通路が形成され、該エア通路には加
圧エアを供給するエア供給管１１６が接続され、さらに
、上記エア通路には、フレーム本体１２のエア吹込み孔
１２ｂ （ｍ１図参照）に−端が接続されたエアホー
ス１１ｇの他端が接続されている。そして、上記ロービ
ング巻付けの際、エア供給管１１６．エア通路およびエ
アホース１１Ｂを介して加圧エアがフレーム本体１２の
中空部１２ｅ（第１図参照）に供給され、該中空部１２
ｃが加圧される。この加圧エアにより、ロービング巻付
けの際に生ずる繊維張力によってフレーム本体１２が変
形するのを最小限に押えることができる。In order to wrap the roving, the frame body 12 can be rotated by the shaft member 112 in six directions shown by arrows. On the other hand, an air passage is formed in the sleeve 114 that supports the shaft member 112, and an air supply pipe 116 that supplies pressurized air is connected to the air passage. The other end of the air hose 11g, whose negative end is connected, is connected to the air blowing hole 12b (see figure m1). When winding the roving, the air supply pipe 116. Pressurized air is supplied to the hollow part 12e (see FIG. 1) of the frame main body 12 through the air passage and the air hose 11B, and the hollow part 12e
c is pressurized. This pressurized air can minimize deformation of the frame main body 12 due to fiber tension generated when the roving is wound.
なお、上記各実施例においては、強化材としてガラス繊
維を用いたが、カーボン繊維その他の強化材を用いるよ
うにしてもよいことはもちろんである。In each of the above embodiments, glass fiber was used as the reinforcing material, but it is of course possible to use carbon fiber or other reinforcing material.
第１図は、本発明に係る樹脂成形品の成形方法の第１実
施例を示すレジンインジェクション工程図であって、第
２図のＩ−１線断面に対応する金型断面図、
第２図は、上記実施例により成形された樹脂成形品を示
す斜視図、
第３図は、第２図の■−■線断面図、
第４図は、本発明の第２実施例を示すフィラメントワイ
ンディング工程図である。
１０・・・樹脂成形品
１２・・・フレーム本体（一次成形品）１２ａ・・・凹
陥溝 １２ｂ・・・エア吹込み孔１２ｅ・・・
中空部 １４・・・強化材含有樹脂層１８．１
６ ’・・・ガラス繊維（強化材）第ｒＦｊＪ
１７１FIG. 1 is a resin injection process diagram showing a first embodiment of the method for molding a resin molded product according to the present invention, and is a sectional view of a mold corresponding to the cross section taken along the line I-1 in FIG. is a perspective view showing a resin molded product molded according to the above embodiment, FIG. 3 is a sectional view taken along the line ■-■ in FIG. 2, and FIG. 4 is a filament winding process showing a second embodiment of the present invention. It is a diagram. 10...Resin molded product 12...Frame body (primary molded product) 12a...Concave groove 12b...Air blow hole 12e...
Hollow part 14... Reinforcement material-containing resin layer 18.1
6'...Glass fiber (reinforcement material) No. rFjJ 171
Claims (1)
り成形した後、この一次成形品の前記凹陥溝内に強化材
含有樹脂材料を充填することにより、樹脂成形品を成形
する方法であって、 前記強化材含有樹脂材料を充填する際、前記一次成形品
の中空部にガスを供給して該中空部を加圧することを特
徴とする、樹脂成形品の成形方法。[Scope of Claims] A resin molded product is formed by blow molding a primary molded product having grooves formed on its outer surface, and then filling the grooves of the primary molded product with a reinforcing material-containing resin material. A method for molding a resin molded product, the method comprising: supplying gas to a hollow part of the primary molded product to pressurize the hollow part when filling the reinforcing material-containing resin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3550190A JPH03239526A (en) | 1990-02-16 | 1990-02-16 | Molding of resin molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3550190A JPH03239526A (en) | 1990-02-16 | 1990-02-16 | Molding of resin molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03239526A true JPH03239526A (en) | 1991-10-25 |
Family
ID=12443506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3550190A Pending JPH03239526A (en) | 1990-02-16 | 1990-02-16 | Molding of resin molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03239526A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452174A (en) * | 2011-07-28 | 2012-05-16 | 昆山同寅兴业机电制造有限公司 | Air pressure shaping technology of carbon fiber product and glass fiber product and used die |
-
1990
- 1990-02-16 JP JP3550190A patent/JPH03239526A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452174A (en) * | 2011-07-28 | 2012-05-16 | 昆山同寅兴业机电制造有限公司 | Air pressure shaping technology of carbon fiber product and glass fiber product and used die |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1287716C (en) | Resin transfer molding core, preform and process | |
| US5045251A (en) | Method of resin transfer molding a composite article | |
| US5194212A (en) | Method of manufacturing a fiber-reinforced structure having a hollow blow-molding core | |
| US5035602A (en) | Resin transfer molding core and preform | |
| JPH07314469A (en) | Production of plastic molding having foam with skin on surface, and foaming die used therefor | |
| GB2250466A (en) | Moulding a hollow golf club shaft from composite fibre/resin material | |
| JP3045659B2 (en) | Golf club shaft and method of manufacturing the same | |
| JPH03239526A (en) | Molding of resin molding | |
| US6264878B1 (en) | Composite bicycle frame and method of manufacture | |
| US4393024A (en) | Method of producing a racket frame | |
| JP2745853B2 (en) | Method for manufacturing hollow FRP molded article | |
| JP2007062150A5 (en) | ||
| JPH06226778A (en) | Member with eye part at end and manufacture thereof | |
| JPH01184124A (en) | Preparation of fiber reinforced resin hollow body | |
| JPH01110379A (en) | Method for manufacturing bat of fiber-reinforced plastics | |
| JPS642048B2 (en) | ||
| JP2516028Y2 (en) | fishing rod | |
| US20050217112A1 (en) | Steering wheel | |
| JPH07156256A (en) | Blow molding method | |
| JP2522853Y2 (en) | Auxiliary tool for hollow fiber reinforced resin molding | |
| GB2270633A (en) | Method of making fibre-reinforced plastics cue having a core. | |
| JP3254700B2 (en) | Molding method for hollow FRP products | |
| JPH04246510A (en) | Forming method of fiber reinforced resin formed body | |
| JP3370153B2 (en) | Method for producing fiber-reinforced resin product and mold for production used in the method | |
| JPH0321433A (en) | Manufacture of fiber reinforced plastic-resin concrete composite material |