JPH0335030A - Production of fiber-reinforced composite molded body - Google Patents
Production of fiber-reinforced composite molded bodyInfo
- Publication number
- JPH0335030A JPH0335030A JP1169865A JP16986589A JPH0335030A JP H0335030 A JPH0335030 A JP H0335030A JP 1169865 A JP1169865 A JP 1169865A JP 16986589 A JP16986589 A JP 16986589A JP H0335030 A JPH0335030 A JP H0335030A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- coating layer
- coating
- uncured
- molten
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000003733 fiber-reinforced composite Substances 0.000 title claims description 13
- 229920005989 resin Polymers 0.000 claims abstract description 44
- 239000011347 resin Substances 0.000 claims abstract description 44
- 239000011247 coating layer Substances 0.000 claims abstract description 31
- 239000011248 coating agent Substances 0.000 claims abstract description 25
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 25
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 23
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000002344 surface layer Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 14
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 abstract description 7
- 239000002131 composite material Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract 6
- 238000004049 embossing Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 7
- 239000003365 glass fiber Substances 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 210000002445 nipple Anatomy 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Extrusion Moulding 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、繊維強化複合成形体の製造方法に関し、とり
わけ内部の繊維強化樹脂中の補強繊維の筋状の浮き出し
による外観不良を防止する製造方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for manufacturing a fiber-reinforced composite molded article, and in particular to a method for manufacturing a fiber-reinforced composite molded article to prevent appearance defects due to streak-like embossment of reinforcing fibers in an internal fiber-reinforced resin. Regarding the method.
（発明の背景）
長尺状の補強材料に熱硬化性樹脂を含浸し、これを所定
の形状に賦形硬化した繊維強化熱硬化性樹脂の引抜成形
品は、軽量性、高強度性、高復元性、高剛性、耐蝕性、
非導電性などの優れた性質から種々の用途に使用されて
いる。(Background of the Invention) A pultrusion molded product made of fiber-reinforced thermosetting resin, which is obtained by impregnating a long reinforcing material with thermosetting resin and shaping and curing it into a predetermined shape, is lightweight, has high strength, and has high strength. Resilience, high rigidity, corrosion resistance,
It is used for various purposes due to its excellent properties such as non-conductivity.
従来において、この種の引抜成形品は、ガラス繊維ロー
ビングなどの補強繊維に未硬化状の熱硬化性樹脂を含浸
し、これを加熱された金型中で硬化させながら引取る製
造方°法が一般的であるが、金型からの引取抵抗の問題
等から、引抜速度は極端に遅く、生産性に問題があった
。Conventionally, this type of pultruded product has been produced by impregnating reinforcing fibers such as glass fiber roving with an uncured thermosetting resin, and then curing it in a heated mold while taking it out. Although it is common, the drawing speed is extremely slow due to problems such as resistance to drawing from the mold, which poses a problem in productivity.
本出願人は、この問題を解決できる方法として、補強繊
維に未硬化状の熱硬化性樹脂を含浸させた混合物を熱可
塑性樹脂で被覆し、しかる後、内部未硬化状の熱硬化性
樹脂を硬化することによって、熱可塑性樹脂被覆に上記
の金型の役割をもたせることによって生産性を著しく向
上できる方法を特公昭５６−２０１８８により既に提供
している。The present applicant has proposed a method that can solve this problem by coating a mixture of reinforcing fibers impregnated with an uncured thermosetting resin with a thermoplastic resin, and then coating the interior with an uncured thermosetting resin. Japanese Patent Publication No. 56-20188 has already provided a method in which productivity can be significantly improved by allowing the thermoplastic resin coating to function as the above-mentioned mold by curing.
この方法によれば、高い生産効率で繊維強化熱硬化性樹
脂製品が製造できるとともに、得られる製品も外周に熱
可塑性樹脂被覆層を有しているので、繊維強化熱硬化性
樹脂を有効に保護して、耐候性、耐蝕、耐水性、耐曲げ
性等も向上できる。According to this method, fiber-reinforced thermosetting resin products can be manufactured with high production efficiency, and the resulting products also have a thermoplastic resin coating layer on the outer periphery, which effectively protects the fiber-reinforced thermosetting resin. As a result, weather resistance, corrosion resistance, water resistance, bending resistance, etc. can also be improved.
しかしながら、外径寸法が規制され、かつ所定の高い剛
性が要求される場合は、曲げ剛性などの強度に寄与する
繊維強化熱硬化性樹脂（以下ＦＲＰと称す）部分の比率
を高める必要がある。However, when the outer diameter dimension is regulated and a predetermined high rigidity is required, it is necessary to increase the ratio of the fiber-reinforced thermosetting resin (hereinafter referred to as FRP) portion that contributes to strength such as bending rigidity.
ところが、ＦＲＰ部分の比率を高めると、表面の熱可塑
性樹脂被覆層の厚みを薄くすると、ＦＲＰ部を硬化した
後の熱可塑性樹脂被覆層の表面に補強繊維の浮き出しを
反映した凸状が発生して、外観上問題があった。However, if the ratio of the FRP part is increased and the thickness of the thermoplastic resin coating layer on the surface is reduced, a convex shape reflecting the protrusion of reinforcing fibers will occur on the surface of the thermoplastic resin coating layer after the FRP part is cured. There was a problem with the appearance.
そこで、本発明者らは、比較的薄い熱可塑性樹脂被覆層
であっても、硬化後において補強繊維の浮出しを反映し
た熱可塑性樹脂被覆層への凹凸の少ない平滑な表面を有
する繊維強化複合成形体の製造方法について鋭意検討し
て本発明を完成した。Therefore, even if the thermoplastic resin coating layer is relatively thin, the present inventors have developed a fiber-reinforced resin coating layer that has a smooth surface with few irregularities on the thermoplastic resin coating layer that reflects the embossment of the reinforcing fibers after curing. The present invention was completed after intensive study on a method for manufacturing a composite molded body.
（課題を解枠するための手段）
上記目的を達成するために、本発明の繊維強化複合成形
体の製造方法は、補強繊維に熱硬化性樹脂を含浸して所
定の形状に賦形した未硬化状物の外周を溶融状の熱可塑
性樹脂被覆層で継目なく被覆して該被覆層を冷却固化し
た後、内部の前記未硬化状熱硬化性樹脂を硬化して熱可
塑性樹脂被覆繊維強化複合成形体を製造する方法におい
て、前記冷却固化前で、ダイから押出された溶融樹脂が
引落し状態で前記未硬化状物の外周に接触する迄の被覆
層の形成過程にある間に、溶融状ないし軟化状の被覆層
の内周に最終被覆形状に対応した冷却フォーマ−を当接
して、未硬化状物との接触時点において、少くとも該内
周の表面層は固化した状態で前記熱可塑性樹脂被覆層を
形成することを特徴としている。(Means for Solving the Problem) In order to achieve the above object, the method for producing a fiber-reinforced composite molded article of the present invention includes a method for producing a fiber-reinforced composite molded article by impregnating reinforcing fibers with a thermosetting resin and shaping the fibers into a predetermined shape. After the outer periphery of the cured product is seamlessly covered with a molten thermoplastic resin coating layer and the coating layer is cooled and solidified, the uncured thermosetting resin inside is cured to form a thermoplastic resin-coated fiber-reinforced composite. In the method for producing a molded article, before the cooling and solidification, the molten resin extruded from the die is in the process of forming a coating layer until it comes into contact with the outer periphery of the uncured material in a drawn state. A cooling former corresponding to the final coating shape is brought into contact with the inner periphery of the softened coating layer, and at least the inner periphery surface layer is in a solidified state at the time of contact with the uncured material. It is characterized by forming a resin coating layer.
本発明の方法に使用できる補強繊維は、ガラス繊維５炭
素繊維、セラミック繊維、アルミナ繊維などの無機繊維
、あるいは芳香族ポリアミド繊維。Reinforcing fibers that can be used in the method of the present invention include glass fibers, inorganic fibers such as carbon fibers, ceramic fibers, and alumina fibers, or aromatic polyamide fibers.
ナイロン繊維、ポリエステル繊維、ビニロン繊維などの
長尺状のものであって、マトリックス樹脂としての熱硬
化性樹脂と接着性があって補強効果を発現できるものが
好ましい。Preferably, it is a long fiber such as nylon fiber, polyester fiber, vinylon fiber, etc., which has adhesive properties with a thermosetting resin as a matrix resin and can exhibit a reinforcing effect.
また、熱硬化性樹脂は、不飽和ポリエステル樹脂、ビニ
ルエステル樹脂、エポキシ樹脂、フェノール樹脂などが
使用できる。Further, as the thermosetting resin, unsaturated polyester resin, vinyl ester resin, epoxy resin, phenol resin, etc. can be used.
一方、外層を形成する熱可塑性樹脂は、溶融押出しが可
能な樹脂であれば特にその種類を問わないが、硬化後の
ＦＲＰ層と接着することを望むときは、上記熱硬化性樹
脂と親和性を有するもの、例えば、スチレンを熱硬化性
樹脂の架橋性モノマーとして使用するときは、スチレン
を誘導体としている熱可塑性樹脂であるＡＢＳ樹脂、Ａ
ＡＳ樹脂、ＰＳ樹脂（ポリスチレン樹脂）、あるいはＰ
Ｃ樹脂（ポリカーボネート樹脂）等が挙げられる。On the other hand, the thermoplastic resin forming the outer layer may be of any type as long as it can be melt-extruded, but if it is desired to adhere to the FRP layer after hardening, the thermoplastic resin must have an affinity with the thermosetting resin. For example, when styrene is used as a crosslinking monomer of a thermosetting resin, ABS resin, which is a thermoplastic resin containing styrene as a derivative,
AS resin, PS resin (polystyrene resin), or P
Examples include C resin (polycarbonate resin).
本発明の製造方法において、引落し状態での被覆は、熱
可塑性樹脂の最終被覆断面積よりも大きな開口部を有す
る被覆ダイスより、溶融状の樹脂を被覆後の引取速度よ
りも遅い速度で押出し、ダイの開口部と未硬化状物の外
周に接触する点、すなわち被覆終了点との間に円錐台状
ないし角錐台状の樹脂の流れが形成される状態での被覆
を意味する。In the manufacturing method of the present invention, the coating in the drawn state is performed by extruding the molten resin at a speed slower than the take-up speed after coating, using a coating die having an opening larger than the final coating cross-sectional area of the thermoplastic resin. , refers to coating in which a truncated conical or truncated pyramid shaped resin flow is formed between the opening of the die and the point of contact with the outer periphery of the uncured material, that is, the coating end point.
上記の引落し状態での被覆に際して、本発明では、被覆
層を形成しつつある円錐台状、あるいは角錐台状の樹脂
流の内周面に最終被覆形状に対応した冷却用フォーマ−
を接触させて、内周部の冷却を促進させ、上記接触点で
は少なくとも内周部の表面層が固化したような状態にす
る必要があり、このため、例えば、冷却フォーマ−を被
覆内周に当接する位置あるいは冷却フォーマ−の接触長
さ、温度などを適宜調整して、・上記の状態が得られる
ようにすることが重要である。When coating in the above-mentioned drawn-down state, in the present invention, a cooling former corresponding to the final coating shape is attached to the inner peripheral surface of the truncated cone-shaped or truncated pyramid-shaped resin flow that is forming the coating layer.
It is necessary to bring the cooling former into contact with the inner periphery to promote cooling of the inner periphery so that at least the surface layer of the inner periphery is solidified at the contact point. It is important to appropriately adjust the contact position, contact length of the cooling former, temperature, etc. so that the above conditions can be obtained.
（作 用〉
本発明の製造方法では、補強繊維に未硬化状の熱硬化性
樹脂を含浸した未硬化状物の外周を熱可塑性樹脂で被覆
するに際して、被覆層の内周の冷却を促進して少くとも
内周の表面層が固化した状態で未硬化状物と接触させて
いるので、従来において補強繊維のバックリング（反発
）等により未硬化状物の外周に生じた筋状の凸条を有す
るものの外周に、未だ溶融状ないし軟化状の熱可塑性樹
脂を被覆することにより生ずる熱可塑性樹脂被覆層表面
の凹凸の発生を軽減ないし抑止できる。(Function) In the manufacturing method of the present invention, when covering the outer periphery of an uncured material obtained by impregnating reinforcing fibers with an uncured thermosetting resin with a thermoplastic resin, cooling of the inner periphery of the coating layer is promoted. Since the uncured material is brought into contact with at least the inner surface layer in a solidified state, conventionally, the streak-like protrusions that occur on the outer periphery of the uncured material due to buckling (repulsion) of reinforcing fibers, etc. By coating the outer periphery of a thermoplastic resin that is still in a molten or softened state, it is possible to reduce or prevent the occurrence of unevenness on the surface of the thermoplastic resin coating layer.
（実 施 例）
以下本発明につき好適な実施例により説明する実施例１
゜
押出機１よりＡＢＳ樹脂を押出して内寸４０ｍ■外寸４
３ｍ１の矩形状の角形パイプ２を連続的に製造し、この
外周に単糸径が２３．５ｍで目付が４４ ｚ ／ ｍの
ガラス繊維ロービング３を、所要本数不飽和ポリエステ
ル樹脂浴４に導いて熱硬化性樹脂を含浸し、絞りノズル
５で絞り成形して外寸４９ｆｆＩ１１の矩形状の未硬化
状物６を得、これを被覆用押出機７に通して溶融状のＡ
ＢＳ樹脂で被覆したこのＡＢＳ樹脂による被覆について
詳細に説明すると、被覆用ダイのヘッド部２０は、第２
図に示すように、まず未硬化状物６はニップル２１の中
央通路中に導かれるが、該ニップル２１はジャケット状
になっていて、冷却水２２が循環できる状態となってお
り、ニップル２１の先端等に付着した熱硬化性樹脂が部
分的に硬化するなどしてトラブルが発生するのを防いで
いる。(Example) Example 1 The present invention will be explained below using a preferred example.
゜ABS resin is extruded from extruder 1 and the inner dimension is 40 m x outer dimension 4
A rectangular square pipe 2 of 3 m1 in size was continuously produced, and on its outer periphery, a required number of glass fiber rovings 3 with a single yarn diameter of 23.5 m and a basis weight of 44 z/m were introduced into an unsaturated polyester resin bath 4. It is impregnated with a thermosetting resin and drawn with a drawing nozzle 5 to obtain a rectangular uncured material 6 with an outer dimension of 49ffI11, which is passed through a coating extruder 7 to form a molten A.
To explain in detail the coating with ABS resin coated with BS resin, the head portion 20 of the coating die is
As shown in the figure, the uncured material 6 is first introduced into the central passage of the nipple 21, which has a jacket shape and is in a state where cooling water 22 can circulate. This prevents problems such as partial hardening of the thermosetting resin attached to the tip etc.
一方、ＡＢＳ樹脂（ＭＦＲ−０，８）を２２０℃で外径
８６ ａｍの円環状ダイ２３から溶融押出しし、被覆終
了後の断面積と円環状ダイの開口部の断面積の比、すな
わち引落し比を２６５とし、円錐状樹脂の流部２４にお
いて、その内周面２５に前記ニップル２１と一体に形成
した内周冷却フォーマ−２６の先端を当接させながらダ
イ先端から４０關の位置で未硬化状物に被覆層内周を接
触させ、これをさらに冷却水槽８に導いて被覆層全周を
冷却した。なお、上記被覆層形成時には、ダイヘッド部
２０のパイプ２７を減圧ラインに接続することによって
、ニップル２１と被覆層形成用の樹脂流２４との間を減
圧として、発生ガスの排出と被覆点の均一化を図った。On the other hand, ABS resin (MFR-0,8) was melt-extruded at 220° C. from an annular die 23 with an outer diameter of 86 am, and the ratio of the cross-sectional area after coating and the cross-sectional area of the opening of the annular die, that is, the drawdown The ratio is set to 265, and the tip of the inner circumferential cooling former 26 formed integrally with the nipple 21 is brought into contact with the inner circumferential surface 25 of the conical resin flow section 24 at a position 40 degrees from the die tip. The inner periphery of the coating layer was brought into contact with the uncured material, and this was further led to a cooling water tank 8 to cool the entire periphery of the coating layer. When forming the coating layer, the pipe 27 of the die head 20 is connected to a reduced pressure line to reduce the pressure between the nipple 21 and the resin flow 24 for forming the coating layer, thereby discharging the generated gas and making the coating points uniform. We tried to make it possible.
なお、本実施例においては、被覆厚みは０．７５＋ｓｍ
とした。被覆層を冷却固化した後、これを熱湯槽９に導
いて熱硬化性樹脂を硬化し、ＦＲＰ層のガラス繊維体積
含有率が５４％、内部の角形パイプ、ＦＲＰ層、外部の
ＡＢＳ被覆とが一体化した角パイプ状の繊維強化複合成
形体を得た。In addition, in this example, the coating thickness is 0.75+sm
And so. After the coating layer is cooled and solidified, it is introduced into a hot water tank 9 to harden the thermosetting resin, and the glass fiber volume content of the FRP layer is 54%, and the inner square pipe, FRP layer, and outer ABS coating are separated. An integrated rectangular pipe-shaped fiber-reinforced composite molded body was obtained.
この複合成形体の被覆表面は、後述する比較例１による
複合成形体と比較して筋状の凹凸は著しく少なく、マイ
クロメータによる測定では１９０周の表面粗さであった
。The coated surface of this composite molded product had significantly fewer streak-like irregularities compared to the composite molded product of Comparative Example 1, which will be described later, and the surface roughness was 190 laps when measured with a micrometer.
比較例１゜
実施例１において、その先端に内周冷却フォーマ−を有
していないニップルを使用したほかは、実施例１と同様
にして角パイプ状の繊維強化複合成形体を得た。Comparative Example 1 A rectangular pipe-shaped fiber-reinforced composite molded article was obtained in the same manner as in Example 1, except that a nipple having no inner cooling former at its tip was used.
得られた複合成形体は被覆表面に高さ約０． ３〜０．
４ｍｍ、幅約３〜５ ｍ＋＊の筋状凸部が１辺５０ｗ１
ｔ中に７〜８本浮き出した状態であった。The resulting composite molded body has a height of approximately 0.0 mm on the coated surface. 3-0.
4mm, width of about 3~5m+* striped convex part is 50w1 on one side
7 to 8 lines stood out during t.
（効 果）
本発明の方法によれば、繊維強化複合体は熱可塑性樹脂
被覆層の表面に補強繊維の飛び出し、乱れなどを原因と
する筋状の凹凸の発生が少ないので、表面が美麗となっ
て商品価値が向上する。また、従来においては表面の凹
凸を少くするには、被覆層の厚みを厚くしていたが、こ
の対策では寸法の増大、あるいは寸法の上限が規制され
る場合には、ＦＲＰ層の薄肉化を余儀なくされ、凹凸の
低減効果が低下するが、本発明によれば、高い生産性を
維持しつつ、比較的薄い肉厚の熱可塑性樹脂°との複合
による利点を活かした繊維強化複合成形体の製法を提供
できる。(Effects) According to the method of the present invention, the fiber-reinforced composite has a beautiful surface because there is less occurrence of streak-like irregularities on the surface of the thermoplastic resin coating layer caused by protrusion or disorder of reinforcing fibers. This will improve the product value. In addition, in the past, the thickness of the coating layer was increased to reduce surface irregularities, but if this measure increases the size or limits the upper limit of the size, it is necessary to thin the FRP layer. However, according to the present invention, it is possible to create a fiber-reinforced composite molded product that takes advantage of the composite with a relatively thin thermoplastic resin while maintaining high productivity. We can provide the manufacturing method.
第１図は本発明の繊維強化複合成形体の製造方法の全体
説明図、第２図は熱可塑性樹脂被覆用押出機のダイ部の
断面図、第゛３図は第２図の要部拡大図である。
３・・・・・・ガラス繊維ロービング（補強繊維）６・
・・・・・未硬化状物Fig. 1 is an overall explanatory diagram of the method for producing a fiber-reinforced composite molded article of the present invention, Fig. 2 is a sectional view of the die section of an extruder for coating thermoplastic resin, and Fig. 3 is an enlarged view of the main part of Fig. 2. It is a diagram. 3...Glass fiber roving (reinforcing fiber) 6.
...Uncured material
Claims (1)
た未硬化状物の外周を溶融状の熱可塑性樹脂被覆層で継
目なく被覆して該被覆層を冷却固化した後、内部の前記
未硬化状熱硬化性樹脂を硬化して熱可塑性樹脂被覆繊維
強化複合成形体を製造する方法において、前記冷却固化
前で、ダイから押出された溶融樹脂が引落し状態で前記
未硬化状物の外周に接触する迄の被覆層の形成過程にあ
る間に、溶融状ないし軟化状の被覆層の内周に最終被覆
形状に対応した冷却フォーマーを当接して、未硬化状物
との接触時点において、少くとも該内周の表面層は固化
した状態で前記熱可塑性樹脂被覆層を形成することを特
徴とする繊維強化複合成形体の製造方法。After impregnating reinforcing fibers with a thermosetting resin and shaping the uncured material into a predetermined shape, the outer periphery of the uncured material is seamlessly covered with a molten thermoplastic resin coating layer, and the coating layer is cooled and solidified. In the method for producing a thermoplastic resin-coated fiber-reinforced composite molded article by curing the uncured thermosetting resin, before the cooling and solidification, the molten resin extruded from the die is drawn down into the uncured material. While the coating layer is in the process of forming until it comes into contact with the outer periphery of the coating layer, a cooling former corresponding to the final coating shape is brought into contact with the inner periphery of the molten or softened coating layer until it contacts the uncured material. A method for producing a fiber-reinforced composite molded article, characterized in that the thermoplastic resin coating layer is formed in a solidified state at least on the inner peripheral surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1169865A JPH0335030A (en) | 1989-07-03 | 1989-07-03 | Production of fiber-reinforced composite molded body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1169865A JPH0335030A (en) | 1989-07-03 | 1989-07-03 | Production of fiber-reinforced composite molded body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0335030A true JPH0335030A (en) | 1991-02-15 |
Family
ID=15894384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1169865A Pending JPH0335030A (en) | 1989-07-03 | 1989-07-03 | Production of fiber-reinforced composite molded body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0335030A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050091C (en) * | 1995-12-29 | 2000-03-08 | 邱长埙 | Method for manufacturing a composite pipe provided with a preform |
| EP2746028A1 (en) * | 2012-12-18 | 2014-06-25 | Wellstream International Limited | Apparatus and method for coating a pipe with extruded polymer |
| CN108381816A (en) * | 2018-02-08 | 2018-08-10 | 浙江恩森化学科技有限公司 | Fiber film-coated braiding device and method |
-
1989
- 1989-07-03 JP JP1169865A patent/JPH0335030A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050091C (en) * | 1995-12-29 | 2000-03-08 | 邱长埙 | Method for manufacturing a composite pipe provided with a preform |
| EP2746028A1 (en) * | 2012-12-18 | 2014-06-25 | Wellstream International Limited | Apparatus and method for coating a pipe with extruded polymer |
| CN108381816A (en) * | 2018-02-08 | 2018-08-10 | 浙江恩森化学科技有限公司 | Fiber film-coated braiding device and method |
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