JP2745853B2 - Method for manufacturing hollow FRP molded article - Google Patents
Method for manufacturing hollow FRP molded articleInfo
- Publication number
- JP2745853B2 JP2745853B2 JP3075971A JP7597191A JP2745853B2 JP 2745853 B2 JP2745853 B2 JP 2745853B2 JP 3075971 A JP3075971 A JP 3075971A JP 7597191 A JP7597191 A JP 7597191A JP 2745853 B2 JP2745853 B2 JP 2745853B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- hollow
- base material
- mold
- fiber base
- 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 - Lifetime
Links
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
- 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
- B29C45/14778—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 the article consisting of a material with particular properties, e.g. porous, brittle
- B29C45/14786—Fibrous material or fibre containing material, e.g. fibre mats or fibre reinforced material
-
- 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
Description
【０００１】[0001]
【産業上の利用分野】本発明は、中空部を有する繊維強
化プラスチック成形体、いわゆる中空ＦＲＰ成形体の製
造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a fiber-reinforced plastic molded article having a hollow portion, that is, a so-called hollow FRP molded article.
【０００２】[0002]
【従来の技術】従来、中空ＦＲＰ成形体の製造方法とし
て、 図７に示すように別々に成形したＦＲＰインナ
ーパネル２１とＦＲＰアウターパネル２２を接着して中
空ＦＲＰ成形体１３を製造する方法（複数パネル接合
法）； 図８に示すように繊維基材１２中にエラスト
マー性質の風船中子２３を入れておき、型内で基材１２
に液状反応性樹脂を含浸・硬化させる間、風船中子２３
に所定の内圧をかけることにより中空部２を成形する方
法（風船中子成形法）；及び 特開平２−１２２９２
０号に開示されているように、箱様支持体の回りに繊維
基材を付着させて半組み立て体を製作し、これを型内に
セットして樹脂を含浸・硬化させる方法（中空支持体成
形法）が知られている。2. Description of the Related Art Conventionally, as a method of manufacturing a hollow FRP molded article, a method of manufacturing a hollow FRP molded article 13 by bonding a separately molded FRP inner panel 21 and an FRP outer panel 22 as shown in FIG. As shown in FIG. 8, a balloon core 23 having an elastomeric property is put in the fiber base material 12 as shown in FIG.
While impregnating and curing the liquid reactive resin into the balloon core 23
Forming hollow portion 2 by applying a predetermined internal pressure to the core (balloon core forming method);
As disclosed in No. 0, a method of fabricating a semi-assembly by attaching a fiber base material around a box-like support, setting this in a mold, and impregnating and curing the resin (hollow support) Molding method) is known.
【０００３】なお、一般的な樹脂中空製品の製造方法と
して、図９に示すように通常のインジェクション成形で
樹脂２４の製品表面部を冷却固化した後、樹脂射出口２
５から又は別途設けられたエア噴射孔から注入したエア
圧で未硬化部（内部）の樹脂を排除して中空体にする、
いわゆるガスインジェクション成形法（特公昭５７−１
４９６８号公報参照）があるが、繊維基材が存在すると
エアで中空部を形成させることはできないので、この方
法は繊維基材を使用する中空ＦＲＰ成形体の製造に適用
することはできない。As a general method for manufacturing a hollow resin product, as shown in FIG. 9, after cooling and solidifying a product surface portion of a resin 24 by ordinary injection molding, a resin injection port 2 is formed.
5 to remove the resin in the uncured portion (inside) with an air pressure injected from an air injection hole provided separately or from a separately provided air injection hole to form a hollow body.
The so-called gas injection molding method (Japanese Patent Publication No. 57-1)
However, this method cannot be applied to the production of a hollow FRP molded article using a fiber base material, since the presence of a fiber base material cannot form a hollow portion with air.
【０００４】[0004]
【発明が解決しようとする課題】上記従来の中空ＦＲＰ
成形体の製造方法〜には、いずれにも問題がある。
まず、複数パネル接合法では、ＦＲＰ成形を一度で行
うことができず複数の成形工程のほかに接着工程も必要
とするため、コストが膨大となり生産性（成形サイク
ル）の低下を招く。また、風船中子成形法及び中空
支持体成形法では、風船中子又は中空支持体を必要とす
るのでコスト高となる上に、それらが成形体内に残るの
で軽量化というＦＲＰ本来の目的が損なわれてしまう。
なお、風船中子成形法においては成形後、風船中子を
取り出す方法も考えられるが余程単純な形状でない限り
無理である。The above-mentioned conventional hollow FRP
There are problems with any of the methods for manufacturing molded articles.
First, in the multiple panel joining method, FRP molding cannot be performed at one time, and an adhesive step is required in addition to a plurality of molding steps, so that the cost becomes enormous and productivity (molding cycle) is reduced. In addition, the balloon core molding method and the hollow support molding method require a balloon core or a hollow support, which increases the cost. In addition, since the balloon core or the hollow support remains in the molded body, the original purpose of the FRP to reduce the weight is impaired. I will be.
In the balloon core molding method, a method of taking out the balloon core after molding is conceivable, but it is impossible unless the shape is too simple.
【０００５】本発明は上記問題を解決する目的でなされ
たものであり、その解決しようとする課題は、生産性の
低下を招く別途成形工程や接着工程を必要とせずに、ま
た重量増加の要因となる風船中子、支持体等の補助部材
を使用せずに、軽量で高強度の中空ＦＲＰ成形体を非常
に簡単に製造できる方法を提供することである。The present invention has been made for the purpose of solving the above-mentioned problems, and the problem to be solved is to eliminate the need for a separate molding step or bonding step which causes a decrease in productivity, and to reduce the weight. It is an object of the present invention to provide a method for manufacturing a lightweight and high-strength hollow FRP molded article very easily without using an auxiliary member such as a balloon core and a support.
【０００６】[0006]
【課題を解決するための手段】本発明の中空ＦＲＰ成形
体の製造方法は、プリフォーム繊維基材を装填した型内
に樹脂を注入して中空ＦＲＰ成形体を製造する方法にお
いて、中空部を形成している繊維基材の壁部に貫通孔を
設けるとともに、該貫通孔に連通するエア導入孔が設け
られた型を用いて、樹脂注入後に前記貫通孔とエア導入
孔を通じて繊維基材の中空部に圧縮エアを送ることを特
徴とする。The method for producing a hollow FRP molded article according to the present invention is a method for producing a hollow FRP molded article by injecting a resin into a mold loaded with a preform fiber substrate. A through-hole is provided in the wall of the formed fiber base material, and a mold provided with an air introduction hole communicating with the through-hole is used. The compressed air is sent to the hollow part.
【０００７】使用されるプリフォーム繊維基材は、得よ
うとする中空ＦＲＰ成形体と同様の形状であることが必
要であるが、中空部を有するプリフォーム繊維基材を製
造するのが困難な場合、分割した形状の基材を個々に作
り、型にセットする時に組み合わせればよい。プリフォ
ーム繊維基材は、例えばヤーンチョップ、ロービングチ
ョップの形状で市販されているガラス繊維等を開繊し、
有機繊維を加えるときにはこれも同様に開繊してフィラ
メント状とし、必要に応じバインダを添加混合して圧縮
成形すること等により得られる。繊維基材の空隙率が大
きすぎると形状が崩れ易くなり、小さすぎると樹脂の含
浸が進まなくなるので、空隙率は通常７０〜９５％であ
るが、本発明方法では樹脂が非常によく含浸し易くなる
ので、空隙率が５０％を下回る程の繊維基材を用いるこ
ともできる。The preform fiber substrate to be used must have the same shape as the hollow FRP molded product to be obtained, but it is difficult to produce a preform fiber substrate having a hollow portion. In this case, the base materials having the divided shapes may be individually formed and combined when set in a mold. The preform fiber base material is, for example, a yarn chop, a commercially available glass fiber in the form of a roving chop, and the like.
When the organic fiber is added, it is also obtained by, for example, opening the fiber to form a filament, adding and mixing a binder as necessary, and performing compression molding. If the porosity of the fiber base material is too large, the shape tends to collapse, and if the porosity is too small, the impregnation of the resin does not proceed. Therefore, the porosity is usually 70 to 95%. Since it becomes easy, a fiber base material having a porosity of less than 50% can be used.
【０００８】上記のように繊維基材には、その中空部に
通じる貫通孔が設けられる。その数は通常、一つの中空
部につき１個あれば充分である。位置も特に限定されな
いが、特に中空部が細長い形状である場合、その中央付
近に貫通孔を設けるのが好ましい。その径は、型に設け
られるガス導入孔の径より幾分大きめにするのがよく、
通常φ５〜３０ｍｍである。繊維基材に貫通孔を設ける
には例えば、プリフォーム化時に貫通孔が形成されるよ
うな圧縮成形型を用いるか、プリフォーム化後にドリル
等で孔を開けるか、ＦＲＰ成形用のガラス繊維不織布、
マット等を用いる場合にはそのプリフォーム化前の裁断
時に孔を開ければよい。[0008] As described above, the fiber substrate is provided with a through hole communicating with the hollow portion. Usually, one is sufficient for one hollow part. Although the position is not particularly limited, especially when the hollow portion has an elongated shape, it is preferable to provide a through hole near the center thereof. Its diameter should be slightly larger than the diameter of the gas introduction hole provided in the mold,
It is usually φ5 to 30 mm. In order to provide a through hole in a fiber base material, for example, a compression mold that forms a through hole during preform formation, a hole or the like after drilling after preform formation, or a glass fiber nonwoven fabric for FRP molding ,
When a mat or the like is used, a hole may be formed at the time of cutting before forming the preform.
【０００９】ＦＲＰ成形型は、繊維基材の中空部に圧縮
エアを送るためのエア導入孔が設けられている以外は従
来と同様の構成の型であってよい。このエア導入孔は、
型内に繊維基材を装填した時に、繊維基材の上記貫通孔
と連通する事が必要である。このエア導入孔から樹脂注
入後に繊維基材の中空部へ圧縮エアが送られる。その圧
力は、中空部の形状、樹脂の種類、繊維密度等に依存す
るが、通常２〜１００気圧の広い範囲であり得る。な
お、樹脂注入中に樹脂がエア導入孔に洩れ出してくる恐
れのある場合は、それを防ぐ程度のエアを送っているの
がよい。[0009] The FRP mold may be a mold having the same structure as the conventional one, except that an air introduction hole for sending compressed air is provided in the hollow portion of the fiber base material. This air introduction hole is
When the fiber substrate is loaded in the mold, it is necessary to communicate with the above-mentioned through hole of the fiber substrate. After the resin is injected from the air introduction hole, compressed air is sent to the hollow portion of the fiber base material. The pressure depends on the shape of the hollow portion, the type of resin, the fiber density, and the like, but can be generally in a wide range of 2 to 100 atm. If there is a possibility that the resin may leak into the air introduction hole during the injection of the resin, it is preferable to send air to prevent the resin from leaking.
【００１０】含浸させる樹脂としては、一般的に不飽和
ポリエステル樹脂、エポキシ樹脂が使用される。中空部
に入った樹脂は圧縮エアによって速く含浸するので、樹
脂を先ず繊維基材の中空部に送るのが好ましい。そのた
めには、型の樹脂注入孔を中空部の上に相当する位置に
設け、繊維基材には型の樹脂注入孔に対応して樹脂導入
孔を設けるとよい。As the resin to be impregnated, generally, unsaturated polyester resin and epoxy resin are used. Since the resin entering the hollow portion is rapidly impregnated with the compressed air, it is preferable to first send the resin to the hollow portion of the fiber base material. For this purpose, it is preferable that the resin injection hole of the mold is provided at a position corresponding to the upper portion of the hollow portion, and the fiber base is provided with a resin introduction hole corresponding to the resin injection hole of the mold.
【００１１】[0011]
【作用】型内にプリフォーム繊維基材を装填すると、繊
維が中空部を除くキャビティ空間に配置された状態にな
る。樹脂注入後、型に設けられているエア導入口と繊維
基材に設けられている貫通孔を通して圧入されたエア
は、繊維の存在しない部分、すなわち繊維基材の中空部
に溜まる。この中空部に溜まったエアの圧力で、繊維基
材の中空部に存在する樹脂は繊維部に押し込まれ含浸し
ていく。中空部は樹脂のためのランナーの役目を果た
し、樹脂は中空部の周囲の繊維部へ内側から含浸するの
で、含浸速度は速くなる。また、中空部に溜まったエア
の圧力で、中空部の周囲の繊維部の形状が崩れることが
防止される。そして、別個にＦＲＰ成形を行ったり、風
船中子，支持体等の補助部材を使用しないことは、中空
ＦＲＰ成形体の製造操作を簡易にし、生産コストを低減
させる。When the preform fiber substrate is loaded in the mold, the fibers are placed in the cavity space excluding the hollow portion. After the injection of the resin, the air press-fitted through the air introduction port provided in the mold and the through hole provided in the fiber base material accumulates in a portion where no fiber exists, that is, in a hollow portion of the fiber base material. Due to the pressure of the air accumulated in the hollow portion, the resin existing in the hollow portion of the fiber base material is pushed into the fiber portion and impregnated. The hollow portion serves as a runner for the resin, and the resin impregnates the fiber portion around the hollow portion from the inside, so that the impregnation speed is increased. In addition, the shape of the fiber around the hollow is prevented from being broken by the pressure of the air accumulated in the hollow. In addition, the separate FRP molding and the elimination of the use of auxiliary members such as a balloon core and a support simplifies the manufacturing operation of the hollow FRP molded body and reduces the production cost.
【００１２】[0012]
【実施例】以下、本発明の製造方法の一実施例を図面に
基づきながら説明する。図３に本実施例により製造され
る中空ＦＲＰ成形体１３を示す。該成形体は、パネル状
のＦＲＰ部１とそれにより囲まれる左右両側の中空部
２，２からなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the manufacturing method of the present invention will be described below with reference to the drawings. FIG. 3 shows a hollow FRP molded body 13 manufactured according to the present embodiment. The molded body comprises a panel-shaped FRP portion 1 and hollow portions 2 and 2 on both right and left sides surrounded by the FRP portion 1.
【００１３】ここで使用される成形型１４は、図２に示
すように上型３と下型４とからなっており、上型３及び
下型４のキャビティ６付近には、型温を調節するための
油、温水、スチーム等の熱媒体を通す配管５，５…が埋
設されている。下型４の上面（上型３と接する面）には
キャビティ６を囲むように溝が設けられており、この溝
に設置されたＯリング７でキャビティ６がシールされ
る。上型３には、含浸用樹脂を注入するための注入孔
８，８が成形体の左右の中空部に対応して２か所に設け
られている。The molding die 14 used here comprises an upper die 3 and a lower die 4, as shown in FIG. Are buried for passing a heat medium such as oil, hot water, steam or the like. A groove is provided on the upper surface of the lower mold 4 (the surface in contact with the upper mold 3) so as to surround the cavity 6, and the O-ring 7 provided in the groove seals the cavity 6. Injection holes 8, 8 for injecting the impregnating resin are provided in the upper mold 3 at two locations corresponding to the left and right hollow portions of the molded body.
【００１４】こうした一般的な構成に加えて、本成形型
には注入孔８とは異なる所にエア導入孔９，９が設けら
れている。該エア導入孔９，９は、型外からキャビティ
６の中空部成形用空間に通じるように下型４に穿設され
ており、このエア導入孔９，９に図示しない圧縮エア供
給機の送気管が接続されている。一方、型に装填される
繊維基材には、上記エア導入孔から圧入されたエアが繊
維基材の中空部に入るように貫通孔が設けられている。In addition to such a general configuration, the present mold is provided with air introduction holes 9, 9 at locations different from the injection holes 8. The air introduction holes 9 and 9 are formed in the lower mold 4 so as to communicate with the cavity forming space of the cavity 6 from outside the mold. The trachea is connected. On the other hand, a through hole is provided in the fiber base material loaded in the mold so that air press-fitted from the air introduction hole enters the hollow portion of the fiber base material.
【００１５】中空ＦＲＰ成形体は、図１に示すように
(a) 繊維基材セット工程、(b) 樹脂注入工程、(c) エア
導入工程を経て製造される。以下、工程順に製造操作を
説明する。[0015] As shown in FIG.
It is manufactured through (a) a fiber substrate setting step, (b) a resin injection step, and (c) an air introduction step. Hereinafter, the manufacturing operation will be described in the order of steps.
【００１６】図１(a) に示すようにプリフォーム繊維基
材１２は、第一プリフォーム体１０と第二プリフォーム
体１１とからなっており、これらの基材部分を順に下型
４に載置してから上型３をかぶせると、中空部６を有す
る繊維基材が型内にセットされたことになる。As shown in FIG. 1A, the preform fiber base 12 is composed of a first preform body 10 and a second preform body 11, and these base parts are sequentially formed into a lower mold 4. When the upper mold 3 is put on after the placement, the fiber base material having the hollow portion 6 is set in the mold.
【００１７】その後、図１(b) に示すように所定量（Ｆ
ＲＰを構成する樹脂分であって、キャビティ全体を満た
すには不十分な量）の樹脂をキャビティ内に注入する。
繊維基材１２には、上型３の樹脂注入孔に対応させて穴
が開けられているため、注入された含浸用樹脂は先ず中
空部に入る。中空部がランナーとしての役目を果たすた
め、繊維基材への含浸性は非常に良くなる。また、通常
のようにランナーが中空部２の外にあると、図６に示す
ように繊維基材１２の変形が起こり易くなるが、繊維基
材には中空部内より注入圧が加わることとなるため、図
５に示すように中空部２周辺のコーナＲ（曲率半径）を
小さくしてもプリフォーム繊維基材は変形することがな
い。Thereafter, as shown in FIG. 1B, a predetermined amount (F
The amount of resin constituting the RP, which is not enough to fill the entire cavity, is injected into the cavity.
Since holes are formed in the fiber base material 12 corresponding to the resin injection holes of the upper mold 3, the injected impregnating resin first enters the hollow portion. Since the hollow portion functions as a runner, the impregnation property of the fiber base material is extremely improved. When the runner is outside the hollow portion 2 as usual, the deformation of the fiber base material 12 is likely to occur as shown in FIG. 6, but the injection pressure is applied to the fiber base material from inside the hollow portion. Therefore, as shown in FIG. 5, even if the corner R (radius of curvature) around the hollow portion 2 is reduced, the preform fiber base material is not deformed.
【００１８】樹脂を所定量注入した後、図１(c) に示す
ようにエア導入孔９，９より圧縮エア１７を送る。該エ
ア１７は、図４に示すように繊維基材１２の前記貫通孔
１６を通して中空部２内に直接導入されるので、プリフ
ォーム繊維基材１２を変形させることなく、中空部２に
溜まっている樹脂を追い出すようにして未含浸部の繊維
基材に樹脂を含浸させる。After injecting a predetermined amount of resin, compressed air 17 is sent from the air introduction holes 9 and 9 as shown in FIG. Since the air 17 is directly introduced into the hollow portion 2 through the through holes 16 of the fiber base material 12 as shown in FIG. 4, the air 17 accumulates in the hollow portion 2 without deforming the preform fiber base material 12. Resin is impregnated into the fiber base material in the unimpregnated portion so as to drive out the resin.
【００１９】樹脂を繊維基材に完全に含浸させた（充填
した）後、型に内設されている配管に熱媒体を流し型を
加熱する。その熱で樹脂が硬化する。完全に硬化が終了
した後、脱型して中空ＦＲＰ成形体を得る。After the fiber base material is completely impregnated (filled) with the resin, a heat medium is passed through a pipe provided in the mold to heat the mold. The heat cures the resin. After the curing is completely completed, the mold is removed to obtain a hollow FRP molded article.
【００２０】本実施例においては、エア導入孔９と樹脂
注入孔８とを独立して設けているが、エア導入孔と樹脂
注入孔とを兼ねる単一の孔部を型に設け、樹脂の注入と
エアの導入とを切替えるようにしてもよい。この場合に
は、型としては従来の構造のままで変更を要することが
ない。In this embodiment, the air introduction hole 9 and the resin injection hole 8 are provided independently. However, a single hole serving both as the air introduction hole and the resin injection hole is provided in the mold, and The injection and the introduction of air may be switched. In this case, the mold does not need to be changed with the conventional structure.
【００２１】[0021]
【発明の効果】本発明の中空ＦＲＰ成形体の製造方法に
よれば、別途成形工程や接着工程を必要とせず、また風
船中子、支持体等の補助部材を使用しないので、著しい
生産性の向上とコスト低減化が達成される。According to the method for producing a hollow FRP molded article of the present invention, a separate molding step and an adhesive step are not required, and auxiliary members such as a balloon core and a support are not used. Improvement and cost reduction are achieved.
【００２２】しかも、中空部から圧縮エアで樹脂を繊維
基材に含浸させることとなるので、中空部が正しく形成
され、樹脂未充填部が発生しない。このため、中空ＦＲ
Ｐ成形体の形状設計自由度が広がり、また、繊維含有率
を高めて高強度（高剛性）化したり、その分だけＦＲＰ
の肉厚を薄くして軽量化したりすることができる。In addition, since the resin is impregnated into the fiber base material with compressed air from the hollow portion, the hollow portion is correctly formed and no resin-unfilled portion is generated. For this reason, hollow FR
The degree of freedom in the shape design of the P molded body is expanded, and the fiber content is increased to increase the strength (high rigidity).
Can be made thinner and lighter.
【図１】本発明の一実施例の製造方法を示す工程図であ
る。FIG. 1 is a process chart showing a manufacturing method according to an embodiment of the present invention.
【図２】一実施例で使用された成形型を示す断面図であ
る。FIG. 2 is a cross-sectional view showing a mold used in one embodiment.
【図３】一実施例で得られた中空ＦＲＰ成形体を切断し
て示す斜視図である。FIG. 3 is a perspective view showing a hollow FRP molded body obtained in one example by cutting.
【図４】本発明方法における作用の説明図である。FIG. 4 is an explanatory diagram of an operation in the method of the present invention.
【図５】本発明方法で製造できる中空ＦＲＰ成形体の説
明図である。FIG. 5 is an explanatory view of a hollow FRP molded article that can be produced by the method of the present invention.
【図６】好ましくない成形型で生じる現象を示す図であ
る。FIG. 6 is a diagram showing a phenomenon that occurs in an undesirable mold.
【図７】従来の成形方法の一例を示す図である。FIG. 7 is a view showing an example of a conventional molding method.
【図８】従来の成形方法の他の例を示す図である。FIG. 8 is a view showing another example of a conventional molding method.
【図９】非繊維強化中空樹脂成形体を製造するためのガ
スインジェクション成形法の説明図である。FIG. 9 is an explanatory view of a gas injection molding method for producing a non-fiber reinforced hollow resin molded body.
２ 中空部 ３ 上型 ４ 下型 ８ 樹脂注入孔 ９ エア導入孔 １２ プリフォーム繊維基材 １３ 中空ＦＲＰ成形体 １５ 含浸用樹脂 １６ 貫通孔 2 Hollow part 3 Upper mold 4 Lower mold 8 Resin injection hole 9 Air introduction hole 12 Preform fiber base material 13 Hollow FRP molded product 15 Impregnation resin 16 Through hole
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ２９Ｌ 22:00 ──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. 6 Identification code FI B29L 22:00
Claims (1)
樹脂を注入して中空ＦＲＰ成形体を製造する方法におい
て、中空部を形成している繊維基材の壁部に貫通孔を設
けるとともに、該貫通孔に連通するエア導入孔が設けら
れた型を用いて、樹脂注入後に前記貫通孔とエア導入孔
を通じて繊維基材の中空部に圧縮エアを送ることを特徴
とする中空ＦＲＰ成形体の製造方法。1. A method of manufacturing a hollow FRP molded article by injecting a resin into a mold loaded with a preform fiber base material, wherein a through hole is provided in a wall of the fiber base material forming the hollow part. Using a mold provided with an air introduction hole communicating with the through hole, sending compressed air to the hollow portion of the fiber base material through the through hole and the air introduction hole after injecting the resin. Manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3075971A JP2745853B2 (en) | 1991-02-13 | 1991-02-13 | Method for manufacturing hollow FRP molded article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3075971A JP2745853B2 (en) | 1991-02-13 | 1991-02-13 | Method for manufacturing hollow FRP molded article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04259530A JPH04259530A (en) | 1992-09-16 |
| JP2745853B2 true JP2745853B2 (en) | 1998-04-28 |
Family
ID=13591634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3075971A Expired - Lifetime JP2745853B2 (en) | 1991-02-13 | 1991-02-13 | Method for manufacturing hollow FRP molded article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2745853B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69310725T2 (en) * | 1992-12-07 | 1997-09-04 | Sumitomo Chemical Co | METHOD FOR PRODUCING HOLLOW MOLDED BODIES |
| EP1090732A1 (en) * | 1999-10-07 | 2001-04-11 | Alusuisse Technology & Management AG | Method and apparatus for manufacturing fibre composites |
| DE102008017377A1 (en) * | 2008-04-05 | 2009-10-08 | Röchling Technische Teile KG | Lightweight component and method for producing this |
| DE102012204036A1 (en) * | 2012-01-25 | 2013-07-25 | Johnson Controls Gmbh | Method and device for producing a structural component |
| CN103448196A (en) * | 2012-05-30 | 2013-12-18 | 合肥杰事杰新材料股份有限公司 | Forming method of thermoplastic composite material |
| CN103507275A (en) * | 2012-06-26 | 2014-01-15 | 合肥杰事杰新材料股份有限公司 | Thermoplastic composite material molding method |
| DE102014222933B4 (en) * | 2014-11-11 | 2021-09-09 | Bayerische Motoren Werke Aktiengesellschaft | Fiber composite component and method for producing a fiber composite component |
-
1991
- 1991-02-13 JP JP3075971A patent/JP2745853B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04259530A (en) | 1992-09-16 |
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