JPH04323026A - Method of molding continuous frp molding - Google Patents
Method of molding continuous frp moldingInfo
- Publication number
- JPH04323026A JPH04323026A JP3122060A JP12206091A JPH04323026A JP H04323026 A JPH04323026 A JP H04323026A JP 3122060 A JP3122060 A JP 3122060A JP 12206091 A JP12206091 A JP 12206091A JP H04323026 A JPH04323026 A JP H04323026A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- resin
- impregnated
- fibers
- nonwoven fabric
- 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
- 238000000465 moulding Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 11
- 239000002344 surface layer Substances 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は長尺ＦＲＰ成形品の成
形方法に関し、詳しくは引き抜き成形法における改良に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a method for molding long FRP molded products, and more particularly to improvements in pultrusion molding.
【０００２】0002
【従来の技術】従来、長尺のＦＲＰ成形品を成形する場
合、主として熱硬化性樹脂を使用し、この樹脂を連続繊
維に樹脂浴などにより含浸させ、束ねて金型に引き通し
所定断面形状に成形すると共に金型を硬化温度にまで加
熱し、樹脂を硬化させ成形体を得る、いわゆる引抜き成
形法が知られている。しかしながら、上記手段で長尺体
を成形する場合繊維は専ら成形品の長さ方向のみに配列
するので製品幅方向に対する強度が比較的弱く、この方
向への強度を必要とする成形品の場合は表面に織製また
は編製した樹脂含浸ガラスマットを供給して成形するこ
とが行われていた。[Prior Art] Conventionally, when molding long FRP molded products, thermosetting resin is mainly used, and continuous fibers are impregnated with this resin in a resin bath, bundled, and pulled through a mold to have a predetermined cross-sectional shape. A so-called pultrusion molding method is known in which a resin is molded into a resin and a mold is heated to a curing temperature to harden the resin to obtain a molded product. However, when a long body is molded by the above method, the fibers are arranged only in the length direction of the molded product, so the strength in the width direction of the product is relatively weak, and in the case of molded products that require strength in this direction, Molding was carried out by supplying a woven or knitted resin-impregnated glass mat to the surface.
【０００３】0003
【従来の技術の問題点】ところで、成形品表面部分にガ
ラスマットを供給した場合、このガラスマットが直接成
形品表面に露出すると表面が著しくざらつき、平滑表面
にし難くなる問題があり、外部に露出しない構造材の場
合は問題は無いが、建築物表層部分の構造材として使用
する場合には外観上問題が生じる欠点があった。[Problems with the prior art] By the way, when a glass mat is supplied to the surface of a molded product, if this glass mat is directly exposed to the surface of the molded product, the surface becomes extremely rough, making it difficult to make a smooth surface. There is no problem in the case of structural materials that do not contain carbon fibers, but when used as structural materials for the surface layer of buildings, there is a drawback in that problems arise in terms of appearance.
【０００４】0004
【発明が解決使用とする課題】この発明は上記問題点に
鑑み、長尺ＦＲＰ製品を製造する場合、表面が平滑とで
きしかも幅方向強度にも優れる製造方法を提供すること
を目的としてなされたものである。[Problems to be Solved by the Invention] In view of the above-mentioned problems, the present invention has been made for the purpose of providing a manufacturing method that can produce long FRP products with a smooth surface and excellent strength in the width direction. It is something.
【０００５】[0005]
【課題を解決するための手段】即ち、この発明の長尺Ｆ
ＲＰ成形品の成形方法は、連続する繊維を樹脂槽に通し
、該樹脂含浸繊維を束ねて加熱金型に引き通し樹脂を硬
化させて長尺ＦＲＰ成形品を成形する方法において、成
形品の表面部分に樹脂含浸不織布を供給し、該不織布に
より表面層を形成しつつ引き抜き成形することを特徴と
するものである。[Means for solving the problem] That is, the long F of the present invention
The method for molding RP molded products involves passing continuous fibers through a resin bath, bundling the resin-impregnated fibers, and passing them through a heated mold to harden the resin to form a long FRP molded product. The method is characterized in that a resin-impregnated nonwoven fabric is supplied to the part, and the nonwoven fabric is used to form a surface layer while being pultruded.
【０００６】[0006]
【作用】この発明において、長尺ＦＲＰ成形品の成形方
法として引き抜き成形を前提としており、この引き抜き
成形時に成形品の表面部分に樹脂含浸不織布を供給して
従来と同様に成形するのである。この場合、樹脂含浸不
織布は繊維のけば立ちがあっても金型通過時に金型内面
との圧縮状態での接触により表面がならされ、非常に平
滑な製品表面となし得る。 また、樹脂が硬化すれば
不織布繊維との結合によって製品幅方向への強度が著し
く向上される。[Operation] The present invention is based on pultrusion molding as the method for forming long FRP molded products, and during this pultrusion molding, a resin-impregnated nonwoven fabric is supplied to the surface of the molded product and the molding is performed in the same manner as in the past. In this case, even if the resin-impregnated nonwoven fabric has frayed fibers, the surface is smoothed by contact with the inner surface of the mold in a compressed state when it passes through the mold, resulting in a very smooth product surface. Further, when the resin is cured, the strength in the width direction of the product is significantly improved by bonding with the nonwoven fibers.
【０００７】[0007]
【実施例】次にこの発明の実施例を説明する。図１はこ
の発明の実施状態を示す側断面図である。まず、ガラス
繊維製の厚さ１ｍｍの不織布１を用意し、この不織布に
熱可塑性樹脂を含浸させて乾燥硬化させ、不織布に引っ
張り強度を付与し、これを成形供給用ロール２に巻回し
た。[Example] Next, an example of the present invention will be described. FIG. 1 is a side sectional view showing the state of implementation of the invention. First, a nonwoven fabric 1 made of glass fiber with a thickness of 1 mm was prepared, this nonwoven fabric was impregnated with a thermoplastic resin, dried and cured to impart tensile strength to the nonwoven fabric, and then wound around a forming supply roll 2.
【０００８】ついで、上記不織布１、１と通常の補強用
連続繊維３…３とを熱硬化性樹脂４を満たしたバット５
に通し樹脂浴をさせ、これを束ねて引き抜き金型６へ供
給し、金型を加熱することによって厚さ５ｃｍ幅１０ｃ
ｍの長尺成形体Ｇを引き抜き成形した。 この成形品
表面を観察したところ、表面は非常に滑らかな平滑表面
とされざらつき部分は一切見られなかった。[0008] Next, the nonwoven fabrics 1, 1 and ordinary reinforcing continuous fibers 3...3 are placed in a bat 5 filled with a thermosetting resin 4.
The bundles are bundled and supplied to the drawing mold 6, and the mold is heated to form 5cm thick and 10cm wide sheets.
A long molded body G having a length of m was pultruded. When the surface of this molded product was observed, it was found to be a very smooth surface with no rough areas at all.
【０００９】次に、上記成形体を長さ方向に５ｃｍごと
に裁断し、厚さ、長さ共に５ｃｍ、幅１０ｃｍの試験片
とし、１０ｃｍ方向を長さ方向として曲げ強度を測定し
た。その結果、曲げ強度は製品長さ方向３５００ｋｇ／
ｃｍ２ 幅方向１４５ ｋｇ／ｃｍ２となった。比較例
として実施例における不織布に代えガラス繊維マットを
使用して同様に成形したものについての曲げ強度を測定
したところ実施例と同じ結果となった。またガラスマッ
トまたは不織布を挿入せずに成形したものについての同
様な曲げ強度試験の結果は３０ ｋｇ／ｃｍ２ となり
、実施例曲げ強度が著しく優れることが判明した。Next, the above-mentioned molded body was cut into pieces of 5 cm in the length direction to obtain test pieces having a thickness and length of 5 cm and a width of 10 cm, and the bending strength was measured using the 10 cm direction as the length direction. As a result, the bending strength in the product length direction was 3500 kg/
cm2 width direction was 145 kg/cm2. As a comparative example, the bending strength of a product molded in the same manner using glass fiber mat instead of the nonwoven fabric in the example was measured, and the results were the same as in the example. Further, the result of a similar bending strength test for a molded product without inserting a glass mat or nonwoven fabric was 30 kg/cm2, which revealed that the bending strength of the example was extremely excellent.
【００１０】0010
【発明の効果】この発明は以上説明したように、成形体
表面に樹脂含浸不織布を挿入したため、表面層が非常に
平滑な面とすることができ、美観に優れた成形品を成形
することが可能となり、また、一時に大量の成形品が成
形できるなどの効果を有する。[Effects of the Invention] As explained above, in this invention, since the resin-impregnated nonwoven fabric is inserted into the surface of the molded product, the surface layer can be formed into a very smooth surface, and a molded product with excellent aesthetic appearance can be molded. It also has the effect of making it possible to mold a large amount of molded products at once.
【図１】この発明の実施状態を示す側断面図である。FIG. 1 is a side sectional view showing a state in which the invention is implemented.
１ 不織布 ３ 補強繊維 ４ 熱硬化性樹脂 ５ バット ６ 引き抜き金型 Ｇ 成形品 1 Non-woven fabric 3. Reinforcing fiber 4 Thermosetting resin 5 Bat 6 Drawing mold G Molded product
Claims (1)
繊維を束ねて加熱金型に引き通し樹脂を硬化させて長尺
ＦＲＰ成形品を成形する方法において、成形品の表面部
分に樹脂含浸不織布を供給し、該不織布により表面層を
形成しつつ引き抜き成形することを特徴とする長尺ＦＲ
Ｐ成形品の成形方法[Claim 1] A method of molding a long FRP molded product by passing continuous fibers through a resin bath, bundling the resin-impregnated fibers, and passing them through a heating mold to harden the resin. A long FR characterized by supplying an impregnated nonwoven fabric and performing pultrusion molding while forming a surface layer using the nonwoven fabric.
Molding method for P molded products
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3122060A JPH04323026A (en) | 1991-04-23 | 1991-04-23 | Method of molding continuous frp molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3122060A JPH04323026A (en) | 1991-04-23 | 1991-04-23 | Method of molding continuous frp molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04323026A true JPH04323026A (en) | 1992-11-12 |
Family
ID=14826632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3122060A Pending JPH04323026A (en) | 1991-04-23 | 1991-04-23 | Method of molding continuous frp molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04323026A (en) |
-
1991
- 1991-04-23 JP JP3122060A patent/JPH04323026A/en active Pending
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