JPH11320583A - Manufacture of fiber-reinforced resin molded product - Google Patents
Manufacture of fiber-reinforced resin molded productInfo
- Publication number
- JPH11320583A JPH11320583A JP10130568A JP13056898A JPH11320583A JP H11320583 A JPH11320583 A JP H11320583A JP 10130568 A JP10130568 A JP 10130568A JP 13056898 A JP13056898 A JP 13056898A JP H11320583 A JPH11320583 A JP H11320583A
- Authority
- JP
- Japan
- Prior art keywords
- long fiber
- resin composition
- fiber bundle
- thermosetting resin
- glass fiber
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、繊維強化樹脂成形
品の製造方法に関する。The present invention relates to a method for producing a fiber-reinforced resin molded product.
【０００２】[0002]
【従来の技術】枕木や建築材として使用される人工木材
（たとえば、積水化学工業社製、エスロンネオランバー
ＦＦＵ）等のガラス繊維等によって繊維強化された熱硬
化性樹脂成形品の製造方法として、補強材となるガラス
繊維ロービング等の多数の長繊維束を所定の間隔に引き
揃えながら一方向に進行させ、進行途中で引き揃えられ
た長繊維束群の上方から、液状の熱硬化性樹脂組成物を
振りかける熱硬化性樹脂組成物供給工程と、各長繊維束
を構成する繊維と繊維との間に、振りかけられた熱硬化
性樹脂組成物を含浸させる含浸工程と、熱硬化性樹脂組
成物を，各長繊維束を構成する繊維と繊維との間に含浸
された長繊維束を筒状の成形用通路内に導入し、熱硬化
性樹脂組成物を加熱硬化させるとともに、成形用通路内
の断面形状に成形する加熱成形工程とを備える繊維強化
樹脂成形品の製造方法がある（特開昭５３−４８８６６
号公報等参照）。2. Description of the Related Art As a method for producing a thermosetting resin molded product fiber-reinforced by glass fiber or the like such as artificial wood (for example, Eslon Neo Lumber FFU manufactured by Sekisui Chemical Co., Ltd.) used as a sleeper or a building material, A plurality of long fiber bundles such as glass fiber rovings serving as a reinforcing material are advanced in one direction while being aligned at a predetermined interval, and a liquid thermosetting resin composition is formed from above the aligned long fiber bundles during the progress. A thermosetting resin composition supplying step of sprinkling the product, an impregnation step of impregnating the sprinkled thermosetting resin composition between fibers constituting each long fiber bundle, and a thermosetting resin composition Is introduced into a cylindrical molding passage through which a fiber bundle impregnated between the fibers constituting each long fiber bundle is heated, and the thermosetting resin composition is cured by heating. Formed into a cross-sectional shape There are provided methods for producing the fiber-reinforced resin molded article and a that heat molding step (JP 53-48866
Reference).
【０００３】ところで、各長繊維束は、筒状に巻かれた
長繊維束ロールの内側の端部からそれぞれ引き出された
のち、引き揃えられるようになっている。[0003] Each long fiber bundle is drawn out from the inner end of a long fiber bundle roll wound in a cylindrical shape, and then aligned.
【０００４】しかし、引き揃えられた長繊維束は、引っ
張り張力に加えて、引き出された時の撚り（ねじれ）に
よって、長繊維束の引っ張り方向を長手とした円柱状に
なり、引き揃えられた長繊維束群を上方から見ると、長
繊維束と長繊維束との隙間が大きく、長繊維束群の上か
ら熱硬化性樹脂組成物を振りかけた場合、どうしても隙
間から樹脂がこぼれ落ち原料ロスが大きくなるととも
に、各長繊維束の表面部分のみにしか塗布されず、長繊
維束内部のガラス繊維に振りかかっていない部分が生
じ、得られる成形品の緻密さがかけたり、幅方向の強度
的に問題がでたりする。この傾向は、特に、製品断面の
単位面積当たりのガラス繊維の使用量が少ない低比重品
や薄板品を製造する際に顕著である。[0004] However, the aligned long fiber bundles are twisted (twisted) when pulled out, in addition to the tensile tension, to have a columnar shape with the longitudinal direction of the long fiber bundle being elongated, and are aligned. When the long fiber bundle group is viewed from above, the gap between the long fiber bundle and the long fiber bundle is large, and when the thermosetting resin composition is sprinkled from above the long fiber bundle group, the resin is spilled from the gap and material loss is inevitable. As it becomes larger, it is applied only to the surface of each long fiber bundle and some parts are not sprinkled on the glass fibers inside the long fiber bundle. Problems. This tendency is particularly remarkable when a low-density product or a thin product using a small amount of glass fiber per unit area of a product cross section is manufactured.
【０００５】一方、長繊維束ロールを回転自在な円盤状
のサプライスタンドに載せ、長繊維束をロールの外側か
ら引き出し、引き出しに追従してサプライスタンドが回
転するようにしておけば、長繊維束の撚りが防止できる
のであるが、この方法の場合、サプライスタンドを長繊
維束ロールの数だけ用意する必要があり、設備コストや
スペースの点で問題がある。On the other hand, if the long fiber bundle roll is placed on a rotatable disk-shaped supply stand, the long fiber bundle is pulled out from the outside of the roll, and the supply stand is rotated following the drawer, the long fiber bundle is rolled. However, in this method, it is necessary to prepare the supply stands by the number of the long fiber bundle rolls, which is problematic in terms of equipment cost and space.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、このような
事情に鑑みて、幅の広い成形品であっても比重分布が略
均一になり、幅方向の曲げ強度にも優れた成形品を製造
することができる繊維強化樹脂成形品の製造方法を提供
することを目的としている。SUMMARY OF THE INVENTION In view of such circumstances, the present invention provides a molded article having a substantially uniform specific gravity distribution and excellent bending strength in the width direction even with a wide molded article. It is an object of the present invention to provide a method for producing a fiber-reinforced resin molded product that can be produced.
【０００７】[0007]
【課題を解決するための手段】このような目的を達成す
るために、請求項１に記載の発明かかる繊維強化樹脂成
形品の製造方法（以下、「請求項１の製造方法」と記
す）は、多数の円筒状に巻き込まれた長繊維束ロールか
らそれぞれ補強材となる長繊維束を連続的に引き出し、
所定の間隔に引き揃えながら一方向に進行させ、進行途
中で引き揃えられた長繊維束群の上方から、液状の熱硬
化性樹脂組成物を振りかけて塗布する塗布工程と、塗布
された熱硬化性樹脂組成物を各長繊維束を構成する繊維
と繊維との間に含浸させる含浸工程と、繊維と繊維との
間に熱硬化性樹脂組成物が含浸された各長繊維束を筒状
の成形用通路内に導入し、熱硬化性樹脂組成物を加熱硬
化させるとともに、成形用通路内の断面形状に成形する
加熱成形工程とを備える繊維強化樹脂成形品の製造方法
において、長繊維束の総番手が同じで構造が異なる複数
種の長繊維束ロールの内側からそれぞれ長繊維束を引き
出すとともに、この引き出された長繊維束を同じ導入通
路内に異種の長繊維束が含まれるように複数本ずつ通し
たのち、各長繊維束を引き揃えるようにした。In order to achieve such an object, a method for producing a fiber-reinforced resin molded article according to the present invention according to claim 1 (hereinafter referred to as "a method for producing claim 1") is described. Continuously pull out long fiber bundles serving as reinforcing materials from a large number of long fiber bundle rolls wound in a cylindrical shape,
An application step of applying the liquid thermosetting resin composition by applying the liquid thermosetting resin composition from above the aligned long fiber bundle group in the middle while proceeding in one direction while aligning at a predetermined interval, and applying the applied thermosetting Impregnating step of impregnating the thermosetting resin composition between the fibers that compose the long fiber bundle with the thermosetting resin composition, and forming the long fiber bundle impregnated with the thermosetting resin composition between the fiber and the fiber into a tubular shape Heat-curing the thermosetting resin composition introduced into the molding passage, and a heat molding step of molding into a cross-sectional shape in the molding passage. A plurality of long fiber bundles are drawn from the inside of a plurality of types of long fiber bundle rolls having the same total number and different structures, and a plurality of the drawn long fiber bundles are separated so that different kinds of long fiber bundles are included in the same introduction passage. After passing through each one, each long fiber It was to the pull align.
【０００８】一方、請求項２に記載の発明かかる繊維強
化樹脂成形品の製造方法（以下、「請求項２の製造方
法」と記す）は、多数の円筒状に巻き込まれた長繊維束
ロールからそれぞれ補強材となる長繊維束を連続的に引
き出し、所定の間隔に引き揃えながら一方向に進行さ
せ、進行途中で引き揃えられた長繊維束群の上方から、
液状の熱硬化性樹脂組成物を振りかけて塗布する塗布工
程と、塗布された熱硬化性樹脂組成物を各長繊維束を構
成する繊維と繊維との間に含浸させる含浸工程と、繊維
と繊維との間に熱硬化性樹脂組成物が含浸された各長繊
維束を筒状の成形用通路内に導入し、熱硬化性樹脂組成
物を加熱硬化させるとともに、成形用通路内の断面形状
に成形する加熱成形工程とを備える繊維強化樹脂成形品
の製造方法において、長繊維束がそれぞれ円筒状に巻か
れた多数の長繊維束ロールの内側から各長繊維束を引き
出し、２本以上の長繊維束を筒状の導入経路内に一旦通
すとともに、導入経路の前後の少なくともいずれか一方
で、同一の導入経路内を通る長繊維束のうち、少なくと
も１本の長繊維束を残りの長繊維束より弛ませた状態に
しておくようにした。On the other hand, the method for producing a fiber-reinforced resin molded article according to the invention of claim 2 (hereinafter referred to as “the production method of claim 2”) is based on a long fiber bundle roll wound into a large number of cylinders. Continuously pull out the long fiber bundles to be the reinforcing material, respectively, and proceed in one direction while aligning them at predetermined intervals.From above the long fiber bundle group that has been aligned in the middle of the progress,
An application step of sprinkling and applying a liquid thermosetting resin composition, an impregnation step of impregnating the applied thermosetting resin composition between fibers constituting each long fiber bundle, and fibers and fibers Each of the long fiber bundles impregnated with the thermosetting resin composition is introduced into the cylindrical molding passage, and the thermosetting resin composition is heated and cured, and the cross-sectional shape in the molding passage is obtained. And forming a long fiber bundle from the inside of a large number of long fiber bundle rolls in which the long fiber bundle is wound in a cylindrical shape. The fiber bundle is once passed through the cylindrical introduction path, and at least one of the long fiber bundles passing through the same introduction path at least one of before and after the introduction path, at least one long fiber bundle is used as the remaining long fiber. So that it is more slack than the bundle. .
【０００９】上記請求項１および請求項２の製造方法に
おいて、補強繊維としては、特に限定されず、たとえ
ば、ガラス繊維、カーボン繊維、ビニロン繊維、セルロ
ース繊維等が挙げられる。熱硬化性樹脂としては、特に
限定されないが、たとえば、ポリウレタン樹脂，フェノ
ール樹脂，ポリエステル樹脂等が挙げられる。In the production method of the first and second aspects, the reinforcing fiber is not particularly limited, and examples thereof include glass fiber, carbon fiber, vinylon fiber, and cellulose fiber. The thermosetting resin is not particularly limited, and examples thereof include a polyurethane resin, a phenol resin, and a polyester resin.
【００１０】熱硬化性樹脂樹脂液中には、上記のような
樹脂以外に発泡剤、発泡助剤、充填材、補強繊維、着色
剤、紫外線吸収剤、酸化防止剤、難燃剤等を必要に応じ
て混合されていても構わない。充填材としては、特に限
定されないが、たとえは、炭酸カルシウム、タルク、木
粉、水酸化アルミニウム、吸水性高分子、カーボンブラ
ック等の粉体が挙げられる。[0010] In addition to the above resins, the thermosetting resin resin liquid needs a foaming agent, a foaming aid, a filler, a reinforcing fiber, a colorant, an ultraviolet absorber, an antioxidant, a flame retardant, and the like. They may be mixed accordingly. The filler is not particularly limited, and examples thereof include powders such as calcium carbonate, talc, wood powder, aluminum hydroxide, a water-absorbing polymer, and carbon black.
【００１１】因みに、充填材として炭酸カルシウム、タ
ルク等の安価なものを使用すると、安価で圧縮強度の大
きい成形品を得ることができ、水酸化アルミニウムを使
用すると、難燃性に富んだ成形品を得ることができ、カ
ーボンブラックを使用すると、導電性を有する成形品を
得ることができ、木粉を使用する軽量な成形品を得るこ
とができる。By the way, if an inexpensive filler such as calcium carbonate or talc is used as a filler, an inexpensive molded article having a high compressive strength can be obtained. If aluminum hydroxide is used, a molded article having a high flame retardancy can be obtained. When carbon black is used, a molded article having conductivity can be obtained, and a lightweight molded article using wood powder can be obtained.
【００１２】また、請求項１の製造方法において、構造
が異なるとは、長繊維束を構成しているストランドの構
成や繊維径等が異なることを意味する。In the manufacturing method according to the first aspect, the difference in structure means that the strands constituting the long fiber bundle have different structures, fiber diameters, and the like.
【００１３】請求項２の製造方法において、長繊維束を
弛ませた状態にする方法としては、特に限定されない
が、たとえば、製造開始前あるいは製造中に同じ導入経
路を通る長繊維束のうちの一部を残りの長繊維束に影響
を与えないように意図的に余分に引き出して長さに差を
付ける方法、同じ導入経路を通る長繊維束のうち一部を
駆動ロールで上下から挟んでおき、駆動ロールを回転駆
動させることによって意図的にその挟んだ長繊維束のみ
を余分に引き出すことができるようにする方法等が挙げ
られる。In the manufacturing method according to the second aspect, the method for making the long fiber bundle slackened is not particularly limited. For example, of the long fiber bundle passing through the same introduction path before the start of manufacturing or during the manufacturing. A method in which part of the long fiber bundle that passes through the same introduction path is sandwiched from above and below by a drive roll by intentionally pulling out a part so as not to affect the remaining long fiber bundle and giving a difference in length. And a method of rotating the drive roll to intentionally pull out only the long fiber bundle sandwiched between the drive rolls.
【００１４】[0014]
【発明の実施の形態】以下に、本発明の実施の形態を、
図面を参照しつつ詳しく説明する。図１〜図３は、請求
項１の製造方法の実施の形態をあらわしている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
The details will be described with reference to the drawings. 1 to 3 show an embodiment of the manufacturing method according to claim 1.
【００１５】図１に示すように、この製造方法は、ま
ず、長繊維束としての総番手が同じで構造が異なる２種
類のガラス繊維ロービング１ａ，２ａがそれぞれ筒状に
巻かれたロール１ｂ，２ｂをサプライ３の所定位置にセ
ットし、それぞれのロール１ｂ，２ｂの内側からガラス
繊維ロービング１ａ，２ａを引き出し、図２に示すよう
に、異種のガラス繊維ロービング１ａ，２ａを同じ筒状
の導入通路４に通す。As shown in FIG. 1, this manufacturing method first comprises a roll 1b, which is formed by winding two types of glass fiber rovings 1a, 2a having the same total number as a long fiber bundle and having different structures, respectively. 2b is set at a predetermined position of the supply 3, and the glass fiber rovings 1a, 2a are pulled out from the inside of the respective rolls 1b, 2b, and as shown in FIG. 2, different kinds of glass fiber rovings 1a, 2a are introduced into the same cylindrical shape. Pass through passage 4.
【００１６】そして、導入通路４を通ったガラス繊維ロ
ービング１ａ，２ａを配列板５に設けられた小孔５１・
・・５１を通して所望のピッチに引き揃えて、各ロービ
ング１ａ，２ａが所定間隔に並んだロービング群１１と
して一方向に進行させ、図１および図３に示すように、
進行途中に散布機６１を左右に往復動させながらロービ
ング群１１の上方から熱硬化性樹脂組成物６を散布して
各ロービンク１ａ，２ａに熱硬化性樹脂組成物６を付着
させる。The glass fiber rovings 1a and 2a passing through the introduction passage 4 are inserted into the small holes 51.
.. Are aligned to a desired pitch through 51, and each roving 1a, 2a is advanced in one direction as a roving group 11 arranged at a predetermined interval, as shown in FIGS.
The thermosetting resin composition 6 is sprayed from above the roving group 11 while the spreader 61 is reciprocating left and right during the traveling, so that the thermosetting resin composition 6 is adhered to each roving 1a, 2a.
【００１７】つぎに、このように各ロービング１ａ，２
ａに熱硬化性樹脂組成物６が付着したロービング群１１
を含浸台７の所で収束させ、含浸台７の上方に設けた含
浸板７１，７１と含浸台７との間で挟み込み、図１に示
すように、含浸板７１，７１を矢印に示すように左右に
摺動させてロービング群１１を揉み、各ロービング１
ａ，２ａを構成する繊維と繊維との間に熱硬化性樹脂組
成物６を含浸させる。Next, each roving 1a, 2
roving group 11 with thermosetting resin composition 6 attached to a
Is converged at the impregnating table 7, and is sandwiched between the impregnating plates 71, 71 provided above the impregnating table 7 and the impregnating table 7, and the impregnating plates 71, 71 are indicated by arrows as shown in FIG. Rub the roving group 11 by sliding the
The thermosetting resin composition 6 is impregnated between the fibers constituting the a and 2a.
【００１８】そして、熱硬化性樹脂組成物６を充分に各
繊維間に含浸させたロービング群１１を図３に示すよう
に、４つの無端ベルト８１を組み合わせて形成された成
形用通路８の入口から成形用通路８内へ連続的に送り込
み、成形用通路８内で熱硬化性樹脂組成物６を加熱し発
泡硬化させて、成形用通路８と同じ断面形状の成形品９
を連続的に得るようになっている。なお、図３中、３は
上下１対の無端ベルト３１，３１を備えた引取り装置で
ある。Then, as shown in FIG. 3, the roving group 11 in which the thermosetting resin composition 6 is sufficiently impregnated between the fibers is used as an inlet of a molding passage 8 formed by combining four endless belts 81. From the mold, the thermosetting resin composition 6 is heated and foamed and hardened in the molding passage 8 to form a molded article 9 having the same cross-sectional shape as the molding passage 8.
Is obtained continuously. In FIG. 3, reference numeral 3 denotes a take-up device provided with a pair of upper and lower endless belts 31, 31.
【００１９】すなわち、この製造方法によれば、総番手
は同じでも、構造が異なる異種のガラス繊維ロービング
１ａ，２ａを同じ導入通路４に通すようになっているの
で、引き揃えられた時に一方のガラス繊維ロービング１
ａ（２ａ）にたるみが生じて円柱状に丸まったりしな
い。That is, according to this manufacturing method, different kinds of glass fiber rovings 1a, 2a having the same total number but different structures are passed through the same introduction passage 4, so that when they are aligned, one of them is aligned. Glass fiber roving 1
a (2a) does not sag and does not curl into a cylindrical shape.
【００２０】詳細に説明すると、導入通路４の出口以降
のテンションバー（図示せず）や配列板５などの設置の
仕方やその有無に関わらず、総番手が同じでも構造が異
なると、ガラス繊維ロービング１ａ，２ａ間でロール１
ｂ，２ｂから引き出され時の長さに微妙な差が生じる。
これはガラス繊維ロービング１ａ，２ａをロール１ｂ，
２ｂにする際、その工程を安定させるために巻取りテン
ションが異なることに起因しており、不可避な現象であ
る。More specifically, regardless of the installation method of the tension bar (not shown) and the arrangement plate 5 after the outlet of the introduction passage 4 and the presence or absence thereof, if the total number is the same and the structure is different, the glass fiber Roll 1 between rovings 1a and 2a
There is a slight difference in the length when pulled out from b and 2b.
This consists of rolling glass fiber rovings 1a, 2a into rolls 1b,
This is an unavoidable phenomenon due to the difference in winding tension in order to stabilize the process when 2b is used.
【００２１】一方、製造開始とともにガラス繊維ロービ
ング１ａ，２ａが進行し始めると、同じ導入通路４を経
て引き揃えられるが、導入通路４内では、複数のガラス
繊維ロービング１ａ，２ａが互いに軽く絡み合う。した
がって、全てのガラス繊維ロービング１ａ，２ａの進行
速度は、常に製造速度と同じとなって時間とともに各ガ
ラス繊維ロービング１ａ，２ａの引き出し長さの差のみ
が蓄積される。その結果、ロール１ｂ，２ｂから引き出
されて導入通路４までの間あるいは導入通路４の出口以
降の部分にたるみが生じる。On the other hand, when the glass fiber rovings 1a, 2a start to advance with the start of production, the glass fiber rovings 1a, 2a are aligned via the same introduction passage 4, but in the introduction passage 4, the plurality of glass fiber rovings 1a, 2a are lightly entangled with each other. Therefore, the traveling speed of all the glass fiber rovings 1a, 2a is always the same as the production speed, and only the difference in the drawing length of each glass fiber roving 1a, 2a is accumulated with time. As a result, slack is generated between the rolls 1b and 2b and the portion up to the introduction passage 4 or the portion after the exit of the introduction passage 4.
【００２２】なお、構造の異なるガラス繊維ロービング
を使用する限り、たるみの大きさは、時間の経過ととも
に変動することがあっても、完全に０にはならず、また
たるみの生じるガラス繊維ロービング１ａ（２ａ）が一
度に複数の場合もあり、それらが時間とともに変化して
いきながら、一定以上のたるみをいずれかのガラス繊維
ロービング１ａ（２ｂ）で維持し続ける。その結果引き
揃えられたガラス繊維ロービング１ａ・・・１ａ，２ａ
・・・２ａ間に隙間がほとんどないようになる。As long as glass fiber rovings having different structures are used, the size of the slack does not become completely zero even if the size of the slack fluctuates with the passage of time. There may be a plurality of (2a) at a time, and while these change over time, a certain amount or more of the slack is maintained in any one of the glass fiber rovings 1a (2b). As a result, the aligned glass fiber rovings 1a... 1a, 2a
... There is almost no gap between 2a.
【００２３】したがって、散布機６１からロービング群
１１上に熱硬化性樹脂組成物６を振りかけた時に、ロー
ビング群１１の下方に流れ落ちる熱硬化性樹脂組成物６
の量が少なくなる。そして、ロービング群１１上に十分
な熱硬化性樹脂組成物６が保持されたまま、含浸台７の
ところまでロービング群１１が進行し、繊維間に揉みに
よって均一に含浸されるため、緻密で幅方向の曲げ強度
やくぎ引抜き強度などの機械的強度に優れた成形品９を
得ることができる。Therefore, when the thermosetting resin composition 6 is sprinkled from the sprayer 61 onto the roving group 11, the thermosetting resin composition 6 flowing down the roving group 11
The amount of is reduced. Then, while sufficient thermosetting resin composition 6 is held on roving group 11, roving group 11 advances to impregnating table 7 and is uniformly impregnated by rubbing between fibers, so that dense and wide The molded article 9 excellent in mechanical strength such as bending strength in the direction and nail pull-out strength can be obtained.
【００２４】なお、請求項１の製造方法は、上記の実施
の形態に限定されない。たとえば、上記の実施の形態で
は、たとえば、２種類のガラス繊維ロービング１ａ，２
ａを用いるようにしているが、３種類以上でも構わな
い。The manufacturing method of claim 1 is not limited to the above embodiment. For example, in the above-described embodiment, for example, two types of glass fiber rovings 1a, 2
Although a is used, three or more types may be used.
【００２５】図４は請求項２の製造方法の実施の形態を
あらわしている。図４に示すように、この製造方法は、
１種類のガラス繊維ロービング１ｃを用い、同一の導入
通路４を通るガラス繊維ロービング１ｃ・・・１ｃのう
ち、一部のガラス繊維ロービング１ｃを予め、導入通路
４の手前で弛ませた状態にしておくようにした以外は、
上記請求項１の製造方法の実施の形態と同様になってい
る。FIG. 4 shows an embodiment of the manufacturing method according to claim 2. As shown in FIG.
Using one type of glass fiber roving 1c, a part of the glass fiber roving 1c among the glass fiber rovings 1c... 1c passing through the same introduction passage 4 is previously loosened before the introduction passage 4. Except that I kept it,
This is the same as the embodiment of the manufacturing method of the first aspect.
【００２６】すなわち、この製造方法によれば、同じ導
入経路を通る長繊維束は、導入経路内で互いに弱く絡み
合っており、導入経路の中の長繊維束は、テンションに
差があっても、製造中にそれぞれの長繊維束の進行速度
が同じとなるため、進行開始又のたるみが時間の経過と
ともに消滅せず、一定のたるみを維持し続ける。That is, according to this manufacturing method, the long fiber bundles passing through the same introduction path are weakly entangled with each other in the introduction path, and the long fiber bundles in the introduction path have different tensions. Since the traveling speeds of the respective long fiber bundles become the same during the production, the progress or the slack does not disappear with the passage of time, and a constant slack is maintained.
【００２７】したがって、引き揃えられた時点で、テン
ションが強い長繊維束とテンションが弱い長繊維束とが
混在した状態になり、テンションの弱い長繊維束では、
円柱状に丸まったりすることなくため、散布機６１から
ロービング群１１´上に熱硬化性樹脂組成物６を振りか
けた時に、ロービング群１１´の下方に流れ落ちる熱硬
化性樹脂組成物６の量が少なくなる。そして、ロービン
グ群１１´上に十分な熱硬化性樹脂組成物６が保持され
たまま、含浸台７のところまでロービング群１１が進行
し、繊維間に揉みによって均一に含浸されるため、緻密
で幅方向の曲げ強度やくぎ引抜き強度などの機械的強度
に優れた成形品９を得ることができる。Therefore, at the time when the fibers are aligned, a long fiber bundle having a high tension and a long fiber bundle having a low tension are mixed.
When the thermosetting resin composition 6 is sprinkled from the sprayer 61 onto the roving group 11 'to prevent the thermosetting resin composition 6 from flowing down below the roving group 11' so as not to be rounded into a columnar shape. Less. The roving group 11 advances to the impregnating table 7 while the thermosetting resin composition 6 is sufficiently held on the roving group 11 ', and is uniformly impregnated by rubbing between the fibers. A molded article 9 having excellent mechanical strength such as bending strength in the width direction and nail pull-out strength can be obtained.
【００２８】因みに、総番手数の異なる長繊維束を用い
るとともに、引き揃えた時、番手の小さい（細い）長繊
維束を製品表面に位置する部分に意図的に配置するよう
にすれば、請求項１および請求項２の製造方法と同様に
緻密で幅方向の曲げ強度やくぎ引抜き強度などの機械的
強度に優れた成形品９を得ることができる。すなわち、
製品に占める長繊維の重量分率が同じであれば、同じ断
面積の製品を作るのに必要な長繊維束の本数は、低い番
手の長繊維束を用いた方が多くなる。By the way, it is possible to use long fiber bundles having different total numbers and to intentionally arrange long (small) long fiber bundles at the portion located on the product surface when they are aligned. As in the production method of the first and second aspects, it is possible to obtain a molded article 9 which is dense and has excellent mechanical strength such as bending strength in the width direction and nail pull-out strength. That is,
If the weight fraction of the long fibers in the product is the same, the number of long fiber bundles required to produce a product having the same cross-sectional area is larger when a low-count long fiber bundle is used.
【００２９】一方、ロールの内側から引き出した長繊維
束は、引き揃えた時に、撚り（ねじれ）で見掛けの体積
が減少するが、小さい番手の長繊維束を用いるようにす
れば、引き揃える総本数が多いために、その見掛け体積
の現象は大きい番手の長繊維束を用いた場合に比べ緩和
される。On the other hand, when the long fiber bundles drawn out from the inside of the roll are twisted (twisted), the apparent volume decreases when they are aligned, but if the long fiber bundles having a smaller number are used, the total length of the fibers to be aligned can be reduced. Because of the large number, the apparent volume phenomenon is alleviated as compared with the case where a long fiber bundle having a large count is used.
【００３０】[0030]
【実施例】以下に、本発明の実施例をより詳しく説明す
る。Embodiments of the present invention will be described below in more detail.
【００３１】（実施例１）総番手が１３８００ｔｅｘ
で、ストランドの構成が表１に示す構成となっている３
種類の長繊維束としてのガラス繊維ロービングＡ〜Ｃを
それぞれサプライにセットされたロールの内側から引き
出し、図２に示すように、ガラス繊維ロービングＡ〜Ｃ
をそれぞれ１本ずつ同じ導入管路（７５φのポリ塩化ビ
ニル製パイプにガラス繊維ロービングＡ〜Ｃの取込み口
を設けたもの）に通したのち、引き揃え、発泡ウレタン
樹脂組成物をガラス繊維２２０kg／m3に対して２８０kg
／m3の割合（製品設計比重０．５００）で、ガラス繊維
ロービング群の上から散布した。そして、含浸台と含浸
板との間でガラス繊維ロービング群を揉み、各ガラス繊
維間に発泡ウレタン樹脂組成物を含浸させたのち、成形
用通路に導入し、成形品を連続的に成形した。(Example 1) The total number is 13800 tex
And the strand configuration is as shown in Table 1. 3
Glass fiber rovings A to C as kinds of long fiber bundles are pulled out from the inside of the roll set in the supply, respectively, and as shown in FIG.
Are passed one by one through the same introduction conduit (a 75-φ polyvinyl chloride pipe provided with an inlet for glass fiber rovings A to C), then aligned, and the urethane foam resin composition is filled with 220 kg of glass fiber / 280kg for the m 3
/ M 3 (product design specific gravity 0.500) was sprayed over the glass fiber roving group. Then, the glass fiber roving group was rubbed between the impregnating table and the impregnated plate, and after impregnating the urethane foam resin composition between the glass fibers, the mixture was introduced into a molding passage, and the molded product was continuously molded.
【００３２】また、製造開始直後、１時間経過後、５時
間経過後、１０時間経過後の各ガラス繊維ロービングの
テンションおよびたるみ量を測定し、その結果を表２に
示した。Further, immediately after the start of the production, the tension and the amount of slack of each glass fiber roving after 1 hour, 5 hours and 10 hours had elapsed were measured, and the results are shown in Table 2.
【００３３】[0033]
【表１】 [Table 1]
【００３４】[0034]
【表２】 [Table 2]
【００３５】上記表２から、製造開始時には、３種類の
ガラス繊維ロービングのテンションに差が殆どなく、た
るみも０であるが、製造を続けていくに伴って、徐々に
テンション差やたるみが生じ、常にいずれかのロービン
グにたるみが生じることが分かる。From Table 2 above, at the start of production, there is almost no difference between the tensions of the three types of glass fiber rovings, and the sag is 0. However, as the production is continued, the tension difference and the sag gradually occur. It can be seen that slack always occurs in any of the rovings.
【００３６】（実施例２）実施例１のガラス繊維ロービ
ングＢのみを用い、サプライにセットされたロールの内
側から引き出し、３本のガラス繊維ロービングＢを同じ
導入管路（７５φのポリ塩化ビニル製パイプにガラス繊
維ロービングＢの取込み口を設けたもの）に通すととも
に、引き揃え、発泡ウレタン樹脂組成物をガラス繊維２
２０kg／m3に対して２８０kg／m3の割合（製品設計比重
０．５００）で、ガラス繊維ロービング群の上から散布
した。そして、含浸台と含浸板との間でガラス繊維ロー
ビング群を揉み、各ガラス繊維間に発泡ウレタン樹脂組
成物を含浸させたのち、成形用通路に導入し、成形品を
連続的に成形した。なお、１つの導入管路に通された３
本のうち１本のガラス繊維ロービングＢを製造開始時に
他の２本より弛ませた状態にしておいた。(Example 2) Using only the glass fiber roving B of Example 1, the glass fiber roving B was pulled out from the inside of a roll set in a supply, and three glass fiber rovings B were formed in the same introduction conduit (made of 75φ polyvinyl chloride). The glass urethane resin composition is passed through a pipe provided with an inlet for glass fiber roving B).
At a rate of 280 kg / m 3 relative to 20 kg / m 3 (product design specific gravity 0.500) was sprayed from the top of the glass fiber roving group. Then, the glass fiber roving group was rubbed between the impregnating table and the impregnated plate, and after impregnating the urethane foam resin composition between the glass fibers, the mixture was introduced into a molding passage, and the molded product was continuously molded. In addition, 3 passed through one introduction pipeline
One of the glass fiber rovings B was slackened from the other two at the start of production.
【００３７】また、製造開始直後、１時間経過後、５時
間経過後、１０時間経過後の各ガラス繊維ロービングの
テンションおよびたるみ量を測定し、その結果を表３に
示した。Further, immediately after the start of production, the tension and the amount of slack of each glass fiber roving were measured after 1 hour, 5 hours, and 10 hours had passed, and the results are shown in Table 3.
【００３８】[0038]
【表３】 （比較例１）ガラス繊維ロービングＡのみを用いるとと
もに、導入管路を用いず直接配列板に通して引き揃える
ようにした以外は、実施例１と同様にして成形品を得
た。そして、上記実施例１，２で得られた成形品と比較
例１で得られた成形品の実比重、横曲げ強度、外観（表
面および断面）を調べ、その結果を表４に示した。[Table 3] (Comparative Example 1) A molded product was obtained in the same manner as in Example 1 except that the glass fiber roving A alone was used, and the glass fiber was robbed and aligned directly without using an introduction pipe. The actual specific gravity, lateral bending strength, and appearance (surface and cross section) of the molded products obtained in Examples 1 and 2 and the molded product obtained in Comparative Example 1 were examined. The results are shown in Table 4.
【００３９】[0039]
【表４】 [Table 4]
【００４０】（参考例１）表５に示すように、総番手お
よび構成が異なる２種類の長繊維束としてのガラス繊維
ロービングＤとガラス繊維ロービングＥとをそれぞれガ
ラス繊維ロービングＤ３８本、ガラス繊維ロービングＥ
１７０本の割合になるようにロールの内側から引き出し
てガラス繊維ロービングＥが外側になるように引き揃
え、発泡ウレタン樹脂組成物をガラス繊維２２０kg／m3
に対して２８０kg／m3の割合（製品設計比重０．５０
０）で、ガラス繊維ロービング群の上から散布した。そ
して、含浸台と含浸板との間でガラス繊維ロービング群
を揉み、各ガラス繊維間に発泡ウレタン樹脂組成物を含
浸させたのち、成形用通路に導入し、１５mm×６００mm
の断面形状を有する成形品を連続的に成形した。REFERENCE EXAMPLE 1 As shown in Table 5, glass fiber rovings D and E as glass fiber rovings D and E as two types of long fiber bundles having different total numbers and configurations were respectively 38 glass fiber rovings D and glass fiber rovings. E
The glass fiber roving E was pulled out from the inside of the roll so that the ratio became 170, and the glass fiber rovings E were lined up outside, and the urethane foamed resin composition was filled with glass fiber 220 kg / m 3.
280 kg / m 3 (product design specific gravity 0.50
In 0), it was sprayed from above the glass fiber roving group. Then, the glass fiber roving group is rubbed between the impregnating table and the impregnated plate, and after impregnating the urethane foam resin composition between the glass fibers, the glass fiber roving is introduced into a molding passage, and 15 mm × 600 mm
A molded article having a cross-sectional shape of was continuously molded.
【００４１】[0041]
【表５】 [Table 5]
【００４２】（参考例２）ガラス繊維ロービングＤのみ
を１５０本用いた以外は、参考例１と同様にして成形品
を連続的に成形した。上記参考例１，２で得られた成形
品の実比重、横曲げ強度、外観（表面および断面）を調
べ、その結果を表６に示した。Reference Example 2 A molded article was continuously formed in the same manner as in Reference Example 1, except that only 150 glass fiber rovings D were used. The actual specific gravity, lateral bending strength, and appearance (surface and cross section) of the molded products obtained in Reference Examples 1 and 2 were examined. The results are shown in Table 6.
【００４３】[0043]
【表６】 [Table 6]
【００４４】[0044]
【発明の効果】本発明にかかる繊維強化樹脂成形品の製
造方法は、以上のように構成されているので、幅の広い
成形品であっても比重分布が略均一になり、幅方向の曲
げ強度にも優れた成形品を製造することができる。The method for producing a fiber-reinforced resin molded article according to the present invention is configured as described above, so that the specific gravity distribution becomes substantially uniform even for a molded article having a wide width, and the bending in the width direction is performed. A molded article excellent in strength can be manufactured.
【図１】請求項１の製造方法の実施の形態であって、こ
の製造方法に用いる製造装置の要部を拡大して模式的に
あらわす模式図である。FIG. 1 is an embodiment of a manufacturing method according to claim 1, and is a schematic view showing an enlarged main part of a manufacturing apparatus used in the manufacturing method, schematically;
【図２】図１の製造装置の導入通路の断面図である。FIG. 2 is a sectional view of an introduction passage of the manufacturing apparatus of FIG.
【図３】図１の製造装置の含浸工程以降を模式的にあら
わす模式図である。FIG. 3 is a schematic view schematically showing the impregnation step and subsequent steps of the manufacturing apparatus of FIG. 1;
【図４】請求項２の製造方法の実施の形態であって、こ
の製造方法に用いる製造装置の要部を拡大して模式的に
あらわす模式図である。FIG. 4 is an embodiment of the manufacturing method according to claim 2 and is a schematic diagram schematically showing an enlarged main part of a manufacturing apparatus used in the manufacturing method.
１ａ，１ｂ，１ｃ ガラス繊維ロービング（長繊維束） ２ａ，２ｂ ロービング群（長繊維束群） ４ 導入通路 ６ 熱硬化性樹脂組成物 ８ 成形用通路 1a, 1b, 1c Glass fiber roving (long fiber bundle) 2a, 2b Roving group (long fiber bundle group) 4 Introducing passage 6 Thermosetting resin composition 8 Molding passage
Claims (2)
ルからそれぞれ補強材となる長繊維束を連続的に引き出
し、所定の間隔に引き揃えながら一方向に進行させ、進
行途中で引き揃えられた長繊維束群の上方から、液状の
熱硬化性樹脂組成物を振りかけて塗布する塗布工程と、
塗布された熱硬化性樹脂組成物を各長繊維束を構成する
繊維と繊維との間に含浸させる含浸工程と、繊維と繊維
との間に熱硬化性樹脂組成物が含浸された各長繊維束を
筒状の成形用通路内に導入し、熱硬化性樹脂組成物を加
熱硬化させるとともに、成形用通路内の断面形状に成形
する加熱成形工程とを備える繊維強化樹脂成形品の製造
方法において、長繊維束の総番手が同じで構造が異なる
複数種の長繊維束ロールの内側からそれぞれ長繊維束を
引き出すとともに、この引き出された長繊維束を同じ導
入通路内に異種の長繊維束が含まれるように複数本ずつ
通したのち、各長繊維束を引き揃えることを特徴とする
繊維強化樹脂成形品の製造方法。1. A long fiber bundle serving as a reinforcing material is continuously drawn out from a plurality of cylindrical long fiber bundle rolls, and is advanced in one direction while being aligned at a predetermined interval. From above the obtained long fiber bundle group, an application step of spraying and applying a liquid thermosetting resin composition,
An impregnating step of impregnating the applied thermosetting resin composition between the fibers constituting each long fiber bundle, and each long fiber impregnated with the thermosetting resin composition between the fibers. Introducing the bundle into the cylindrical molding passage, heating and curing the thermosetting resin composition, and a heat molding step of molding into a cross-sectional shape in the molding passage. Along with pulling out the long fiber bundles from the inside of a plurality of types of long fiber bundle rolls having the same total number of long fiber bundles and different structures, different long fiber bundles are introduced into the same introduction path with the drawn long fiber bundles. A method of manufacturing a fiber-reinforced resin molded product, comprising passing a plurality of long fiber bundles after passing a plurality of fiber bundles so as to be included.
ルからそれぞれ補強材となる長繊維束を連続的に引き出
し、所定の間隔に引き揃えながら一方向に進行させ、進
行途中で引き揃えられた長繊維束群の上方から、液状の
熱硬化性樹脂組成物を振りかけて塗布する塗布工程と、
塗布された熱硬化性樹脂組成物を各長繊維束を構成する
繊維と繊維との間に含浸させる含浸工程と、繊維と繊維
との間に熱硬化性樹脂組成物が含浸された各長繊維束を
筒状の成形用通路内に導入し、熱硬化性樹脂組成物を加
熱硬化させるとともに、成形用通路内の断面形状に成形
する加熱成形工程とを備える繊維強化樹脂成形品の製造
方法において、長繊維束がそれぞれ円筒状に巻かれた多
数の長繊維束ロールの内側から各長繊維束を引き出し、
２本以上の長繊維束を筒状の導入経路内に一旦通すとと
もに、導入経路の前後の少なくともいずれか一方で、同
一の導入経路内を通る長繊維束のうち、少なくとも１本
の長繊維束を残りの長繊維束より弛ませた状態にしてお
くことを特徴とする繊維強化樹脂成形品の製造方法。2. A long fiber bundle serving as a reinforcing material is continuously drawn from a plurality of cylindrical long fiber bundle rolls, and is advanced in one direction while being aligned at a predetermined interval. From above the obtained long fiber bundle group, an application step of spraying and applying a liquid thermosetting resin composition,
An impregnating step of impregnating the applied thermosetting resin composition between the fibers constituting each long fiber bundle, and each long fiber impregnated with the thermosetting resin composition between the fibers. Introducing the bundle into the cylindrical molding passage, heating and curing the thermosetting resin composition, and a heat molding step of molding into a cross-sectional shape in the molding passage. Each long fiber bundle is pulled out from the inside of a large number of long fiber bundle rolls in which the long fiber bundles are respectively wound in a cylindrical shape,
At least one long fiber bundle among the long fiber bundles passing through the same introduction path at least one of before and after the introduction path while passing two or more long fiber bundles through the cylindrical introduction path once. Characterized in that the fibers are slackened from the remaining long fiber bundles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13056898A JP3954724B2 (en) | 1998-05-13 | 1998-05-13 | Manufacturing method of fiber reinforced resin molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13056898A JP3954724B2 (en) | 1998-05-13 | 1998-05-13 | Manufacturing method of fiber reinforced resin molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11320583A true JPH11320583A (en) | 1999-11-24 |
| JP3954724B2 JP3954724B2 (en) | 2007-08-08 |
Family
ID=15037368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13056898A Expired - Fee Related JP3954724B2 (en) | 1998-05-13 | 1998-05-13 | Manufacturing method of fiber reinforced resin molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3954724B2 (en) |
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1998
- 1998-05-13 JP JP13056898A patent/JP3954724B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3954724B2 (en) | 2007-08-08 |
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