JPH01209126A - Preparation of frp structure having foam as core material - Google Patents
Preparation of frp structure having foam as core materialInfo
- Publication number
- JPH01209126A JPH01209126A JP63034782A JP3478288A JPH01209126A JP H01209126 A JPH01209126 A JP H01209126A JP 63034782 A JP63034782 A JP 63034782A JP 3478288 A JP3478288 A JP 3478288A JP H01209126 A JPH01209126 A JP H01209126A
- Authority
- JP
- Japan
- Prior art keywords
- core material
- foam
- mold
- frp
- outer shell
- 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
- 239000006260 foam Substances 0.000 title claims abstract description 27
- 239000011162 core material Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract 1
- 239000013585 weight reducing agent Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、例えば、サーフィンボード或いは風力発電
機のブレードのような、発泡体を芯材とする軽量、高剛
性ＦＲＰ （繊維強化プラスチック、以下同じ）構造体
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 is applicable to lightweight, high-rigidity FRP (fiber-reinforced plastic, hereinafter the same) having a foam core material, such as surfing boards or wind power generator blades. The present invention relates to a method for manufacturing a structure.
従来の技術
サーフィンボード等においては、軽量でかつ剛性の高い
構造とするため、芯材を発泡体とし、その芯材の外側を
ＦＲＰの外殼で覆った構造としている。この場合、より
高い強度を得るため、外殼の内側にスパー或いはリブを
形成する必要がある。Conventional surfing boards and the like have a structure in which the core material is made of foam and the outside of the core material is covered with an outer shell of FRP in order to have a lightweight and highly rigid structure. In this case, in order to obtain higher strength, it is necessary to form a spar or rib on the inside of the outer shell.
第８図は、そのようなスパーを備えたＦＲＰ構造体の従
来の構造を示したもので、ＦＲＰ製の中空な外殼（１）
の内側に、図のように長方形等の筒状に形成したスパ一
部材（２）を別体に形成して内装し、そのスパ一部材（
２）を外殼（１）の内側面へ接着して一体化させ、残余
の部分に発泡体（３）を充填している。Figure 8 shows the conventional structure of an FRP structure equipped with such a spar, in which a hollow outer shell made of FRP (1)
A spa member (2) formed into a rectangular or other cylindrical shape as shown in the figure is separately formed and installed inside the spa member (2).
2) is adhered to the inner surface of the outer shell (1) to integrate it, and the remaining part is filled with foam (3).
発明が解決しようとする課題
上記のように、従来においては、スパーを外殼（１）と
一体に形成することが困難であり、そのため、このスパ
一部材（２）を別体成形してこれを接着しているのであ
るが、その接着部の信頬性に欠けるといった不都合があ
る。なお、リプを設ける場合も同様であって、別体に形
成したリブを外殼（１）の内側面に接着している。Problems to be Solved by the Invention As mentioned above, in the past, it was difficult to form the spar integrally with the outer shell (1), and therefore, it was difficult to form the spar part (2) separately. Although it is bonded, there is a disadvantage that the bonded portion lacks credibility. The same applies to the case where a rib is provided, and a separately formed rib is adhered to the inner surface of the outer shell (1).
また、このような従来例においては、外殼（１）を成型
するためのガラスや樹脂の積層、脱泡及びリブ又はスパ
ーの接着・脱泡を手積作業で行なわなければならず、そ
のため、工数が多く作業性に劣るとともに、外殼（１）
の手積による積層作業ではガラスの含有率を充分高いも
のにすることができない不都合がある。In addition, in such a conventional example, lamination of glass and resin for molding the outer shell (1), defoaming, and adhesion and defoaming of ribs or spars must be performed by hand, which requires a lot of man-hours. The workability is poor due to the large number of
The manual lamination process has the disadvantage that the glass content cannot be made sufficiently high.
この発明は、かかる従来の欠点を解消して、リブ或いは
スパーを外殼と一体に成形することができるようにした
発泡体を芯材とするＦＲＰ構造体の製造方法を提供する
ものである。The present invention solves these conventional drawbacks and provides a method for manufacturing an FRP structure using a foam as a core material, which allows ribs or spars to be molded integrally with the outer shell.
課題を解決するための手段
上記の目的を達成するため、この発明では、リブ（１９
）用又はスパー（１１）用の間隙（１６）を備えた発泡
体からなる芯材（１５）を成形して、この芯材（１５）
の外表面にＦＲＰの外殼（１７）を形成し、かつ、前記
の間隙（１６）内にもそのＦＲＰを前記外殼（１７）部
と連続するようにして充填した後、型（１４）内での締
付は及び脱泡を行なうことを特徴とする。Means for Solving the Problems In order to achieve the above object, the present invention provides ribs (19
) or a spar (11) by molding a core material (15) made of foam and having a gap (16) for the spar (11).
After forming an FRP outer shell (17) on the outer surface of the mold (14) and filling the gap (16) with the FRP so as to be continuous with the outer shell (17), The tightening is characterized by performing degassing.
作 用
上記、この発明の製造方法によれば、まず、リブ（１９
）又はスパー（１１）用の間隙（１６）を備えた発泡体
（１５）を成形し、この発泡体（１５）を−種の中子型
として利用とするごとにより、その外表面及び前記の間
隙内に一体にＦＲＰを充填するものであり、リブ（１９
）又はスパー（１１）の一体成形が可能である。Effect According to the above-mentioned manufacturing method of the present invention, first, the rib (19
) or a gap (16) for the spar (11) is molded, and this foam (15) is used as a core mold for seeds, thereby forming a mold on its outer surface and the above-mentioned The gap is filled with FRP integrally, and the rib (19
) or the spar (11) can be integrally molded.
実施例
次に、この発明の製造方法を、第５図のように、その長
手方向に２本のスパー（１１） （１１）を一体に備
えるサーフィンボードの製作を例に取って説明する。EXAMPLE Next, the manufacturing method of the present invention will be explained by taking as an example the manufacturing of a surfing board integrally provided with two spars (11) (11) in the longitudinal direction as shown in FIG.
まず、第２図で示すように、下型（１２）と上型（１３
）とからなる型（１４）を用い、この型（１４）内へ、
発泡体の原液を注入発泡させて芯材（１５）を成形する
。First, as shown in Figure 2, the lower mold (12) and the upper mold (13)
) and into this mold (14),
A core material (15) is formed by injecting and foaming the foam stock solution.
次に上記芯材（１５）を脱型した後、第３図のように、
前記スパー（１１） （１１）用の間隙（１６）
（１６）ができるよう、例えば長手方向に切断する等し
て成形加工する。これによって、芯材（１５）は３個に
分割された形となる。Next, after demolding the core material (15), as shown in Figure 3,
Gap (16) for said spar (11) (11)
(16) is formed by, for example, cutting in the longitudinal direction. As a result, the core material (15) is divided into three pieces.
次に、このようにして分割した芯材（１５）に、第４図
のように、ＦＲＰの外殼（１７）を前記間隙部（１６）
へも一体となるようにしてその外表面に成形する。その
方法は、例えば、まず下型（１２）上に繊維を敷いた後
、これに発泡体（１５）を設置し、その発泡体（１５）
の上部側の外表面及び各間隙部（１６）内へガラス繊維
をチャージし、しかる後、それらのガラス繊維層にプラ
スチック材を含浸させることによって行なうことができ
る。Next, as shown in FIG. 4, the outer shell (17) of FRP is attached to the core material (15) divided in this way at the gap (16).
It is also molded on the outer surface of the base so that it is integrated with the base. The method is, for example, to first lay the fibers on the lower mold (12), then place the foam (15) thereon, and then
This can be done by charging glass fibers into the upper outer surface and into each gap (16) and then impregnating the glass fiber layers with a plastic material.
次に、第５図のように、上型（１３）を設置して型（１
４）内に装着する。ごの型（１４）は、前記発泡体（１
５）を成形する際のものと同一のものであり、この型（
１４）内に設置して型締めを行なうと、前記外殼（１７
）の厚み分だけ発泡体（１５）が収縮する。そして、こ
の型（１４）内に設置した状態で真空ポンプ等を用いて
脱泡を行なった後、脱型を行なって第１図のような発泡
体（１５）を芯材とするＦＲＰ構造体が得られる。Next, as shown in Figure 5, the upper mold (13) is installed and the mold (1
4) Attach it inside. The mold (14) is made of the foam (1).
5) is the same as that used for molding, and this mold (
14) and the mold is clamped, the outer shell (17)
) The foam (15) shrinks by the thickness. Then, after degassing is performed using a vacuum pump or the like while it is placed in the mold (14), the mold is removed to form an FRP structure with the foam (15) as a core material as shown in Fig. 1. is obtained.
第７図は、上記スパー（１８）に換えて、外殼（１７）
の内側面にリブ（１９）を一体に形成したちの示してお
り、この場合には、前記のように発泡体（１５）を分割
することなく、リブ（１９）に相当する部分を切り込む
等して間隙（１６）を形成する。Figure 7 shows the outer shell (17) in place of the above spar (18).
The rib (19) is integrally formed on the inner surface of the foam (15). to form a gap (16).
発明の効果
以上のように、この発明によれば、スパー或いはリブが
外殼と一体に成形されるので、従来のように接着する場
合に比較して迄かに強度と接着部の信頬性の高い構造が
得られ、また、強度と信頬性が高いことから全体を薄肉
とすることも可能であり、これによってより軽量化を図
ることができる。また、手積作業は、芯材の切断と外殼
形成用のガラス基板のチャージの際のみでよく、工数も
少なく全体に作業も容易であるとともに、芯材の外側に
ガラス基板をチャージした状態で型締めするので、ガラ
ス含有量率を多くしても硬化前のその型締めによって調
整することが可能で、ＦＲＰ材へのガラス繊維の含有量
も従来のものより高くすることができ、それだけ強度の
高い構造が得られる。Effects of the Invention As described above, according to the present invention, since the spar or rib is integrally molded with the shell, the strength and reliability of the bonded portion are significantly improved compared to the conventional bonding method. Since it has a high structure, and has high strength and reliability, it is possible to make the entire structure thinner, thereby making it possible to further reduce the weight. In addition, manual work is only required when cutting the core material and charging the glass substrate for forming the outer shell, which reduces the number of man-hours and makes the overall work easier. Since the mold is clamped, even if the glass content rate is increased, it can be adjusted by clamping the mold before curing, and the glass fiber content in the FRP material can also be higher than conventional ones, which increases the strength accordingly. A high structure can be obtained.
第１図は、この発明によって製作されるＦＲＰ構造体の
横断面図、第２図は、発泡体の成形方法を示す横断面図
、第３図は、間隙部を形成した発泡体の要部の斜視図、
第４図は、発泡体の外表面へＦ” ＲＰの外殼を形成し
た状態を示す横断面図、第５図は、型内に装着した状態
の横断面図、第６図は、スパーを有するサーフィンボー
トの平面図、第７図は、リブを備えたＦＲＰ構造体の横
断面図、第８図は、従来のＦＲＰ構造体の横断面図であ
る。
（１１）・・・スパー、 （１４）・・・型、（１５
）・・・発泡体、 （１６）・・・間隙、（１７）・
・・ＦＲＰの外殼、（１９）・・・リブ。Fig. 1 is a cross-sectional view of an FRP structure produced according to the present invention, Fig. 2 is a cross-sectional view showing a method of forming a foam, and Fig. 3 is a main part of the foam with a gap formed therein. A perspective view of
Fig. 4 is a cross-sectional view showing a state in which an outer shell of F''RP is formed on the outer surface of the foam, Fig. 5 is a cross-sectional view of the state in which it is installed in a mold, and Fig. 6 is a cross-sectional view showing a state in which an outer shell of F''RP is formed on the outer surface of the foam. A plan view of a surfing boat, FIG. 7 is a cross-sectional view of an FRP structure equipped with ribs, and FIG. 8 is a cross-sectional view of a conventional FRP structure. (11) Spar, (14) )...Type, (15
)...foam, (16)...gap, (17)...
...FRP outer shell, (19)...rib.
Claims (1)
を成形して、この芯材の外表面にＦＲＰの外殼を形成し
、かつ、前記の間隙内にもそのＦＲＰを前記外殼部と連
続するようにして充填した後、型内での締付け及び脱泡
を行なうことを特徴とする発泡体を芯材とするＦＲＰ構
造体の製造方法。A core material made of foam with gaps for ribs or spars is formed, an FRP outer shell is formed on the outer surface of this core material, and the FRP is also formed in the gaps with the outer shell part. A method for manufacturing an FRP structure using a foam as a core material, which comprises continuously filling the foam and then tightening it in a mold and defoaming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63034782A JPH01209126A (en) | 1988-02-17 | 1988-02-17 | Preparation of frp structure having foam as core material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63034782A JPH01209126A (en) | 1988-02-17 | 1988-02-17 | Preparation of frp structure having foam as core material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01209126A true JPH01209126A (en) | 1989-08-22 |
Family
ID=12423852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63034782A Pending JPH01209126A (en) | 1988-02-17 | 1988-02-17 | Preparation of frp structure having foam as core material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01209126A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2937894A1 (en) * | 2008-11-06 | 2010-05-07 | Jean Pierre Stark | Foam board for floater used during e.g. windsurfing, has stiffener inserts interacted with body and defining parabolic curve corresponding to contour of board, where length and diameter of inserts are adjusted based on constraints |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4918168A (en) * | 1972-06-12 | 1974-02-18 | ||
| JPS59218170A (en) * | 1984-04-25 | 1984-12-08 | ヤマハ株式会社 | Molding of racket frame |
| JPS60174632A (en) * | 1984-02-21 | 1985-09-07 | Hitachi Chem Co Ltd | Manufacture of frp molded article |
| JPS61279532A (en) * | 1985-06-05 | 1986-12-10 | Mitsubishi Electric Corp | Manufacture of frp structure for beautiful facing |
-
1988
- 1988-02-17 JP JP63034782A patent/JPH01209126A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4918168A (en) * | 1972-06-12 | 1974-02-18 | ||
| JPS60174632A (en) * | 1984-02-21 | 1985-09-07 | Hitachi Chem Co Ltd | Manufacture of frp molded article |
| JPS59218170A (en) * | 1984-04-25 | 1984-12-08 | ヤマハ株式会社 | Molding of racket frame |
| JPS61279532A (en) * | 1985-06-05 | 1986-12-10 | Mitsubishi Electric Corp | Manufacture of frp structure for beautiful facing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2937894A1 (en) * | 2008-11-06 | 2010-05-07 | Jean Pierre Stark | Foam board for floater used during e.g. windsurfing, has stiffener inserts interacted with body and defining parabolic curve corresponding to contour of board, where length and diameter of inserts are adjusted based on constraints |
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