JPH04229212A - Manufacture of fiber reinforced polyurethane molded object - Google Patents
Manufacture of fiber reinforced polyurethane molded objectInfo
- Publication number
- JPH04229212A JPH04229212A JP41628490A JP41628490A JPH04229212A JP H04229212 A JPH04229212 A JP H04229212A JP 41628490 A JP41628490 A JP 41628490A JP 41628490 A JP41628490 A JP 41628490A JP H04229212 A JPH04229212 A JP H04229212A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- mold
- fiber layer
- glass
- cavity
- 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
- 239000000835 fiber Substances 0.000 title claims abstract description 85
- 239000004814 polyurethane Substances 0.000 title claims abstract description 39
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000003365 glass fiber Substances 0.000 claims abstract description 50
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims description 23
- 238000000465 moulding Methods 0.000 claims description 9
- 238000001746 injection moulding Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 10
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 9
- 239000011521 glass Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 229920002978 Vinylon Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- SVYKKECYCPFKGB-UHFFFAOYSA-N N,N-dimethylcyclohexylamine Chemical compound CN(C)C1CCCCC1 SVYKKECYCPFKGB-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- -1 sucrose polyol Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、自動車のピラー、ドア
パネルおよびアームレスト等の内装材、またはエアスポ
イラー、サイドプロテクターおよびフェンダー等の外装
材として用いる繊維強化ポリウレタン成形体の製造方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing fiber-reinforced polyurethane molded articles for use as interior materials such as pillars, door panels and armrests of automobiles, or exterior materials such as air spoilers, side protectors and fenders.
【０００２】0002
【従来の技術】自動車のピラー、エアスポイラー等には
、軽量および寸法安定性に優れ、しかも所定の剛性を有
するものが好ましく、従来よりガラス繊維からなる繊維
補強体で強化されたポリウレタン成形体が用いられてい
る。[Prior Art] It is preferable for automobile pillars, air spoilers, etc. to be lightweight, have excellent dimensional stability, and have a certain level of rigidity. Conventionally, polyurethane molded bodies reinforced with fiber reinforced bodies made of glass fibers have been used. It is used.
【０００３】その繊維強化ポリウレタン成形体の従来の
製造方法として、ガラス繊維マットからなる繊維補強体
を成形型のキャビティに装置し、そのキャビティにポリ
ウレタン原料を注入し、繊維補強体内に含浸させて繊維
補強体と一体に成形する方法が用いられている。なお、
その製造方法においてあらかじめ成形型のキャビティ面
に表皮材を装置しておけば、表皮材で覆われた繊維強化
ポリウレタン成形体が得られる。[0003] As a conventional manufacturing method for the fiber-reinforced polyurethane molded article, a fiber-reinforced body made of a glass fiber mat is installed in a cavity of a mold, and a polyurethane raw material is injected into the cavity and impregnated into the fiber-reinforced body to form fibers. A method of integrally molding the reinforcing body is used. In addition,
In the manufacturing method, if a skin material is placed on the cavity surface of the mold in advance, a fiber-reinforced polyurethane molded article covered with the skin material can be obtained.
【０００４】しかし、従来の繊維強化ポリウレタン成形
体の製造方法にあっては、ガラス繊維マットからなる繊
維補強体をキャビティへ装置する際に、または成形後の
バリ除去の際にガラス繊維が飛び散って作業環境を損ね
たり、あるいは作業者の手に突き刺さって作業者に不快
感を与える問題があった。また、ガラス繊維は非常に硬
いために、バリ除去の際に繊維補強体を切除しずらい問
題もあった。一方、ガラス繊維は線膨張率が小さく、製
品成形時の収縮を抑える効果がある。したがって、ガラ
ス繊維に代えて剛性の低い繊維から繊維補強体を構成し
て、バリ除去作業等の際の作業環境改善を図ろうとする
と、今度は製品成形時の収縮が極端に大きくなって所定
寸法の製品が得難くなる問題を生ずる。However, in the conventional manufacturing method of fiber-reinforced polyurethane molded bodies, glass fibers are scattered when installing a fiber-reinforced body made of glass fiber mat into a cavity or when removing burrs after molding. There have been problems in that they impair the working environment or get stuck in workers' hands, causing discomfort to workers. Furthermore, since glass fibers are very hard, there is also the problem that it is difficult to cut out the fiber reinforcement when removing burrs. On the other hand, glass fiber has a small coefficient of linear expansion and is effective in suppressing shrinkage during product molding. Therefore, if we attempt to improve the working environment during burr removal work by constructing a fiber reinforced body from fibers with low rigidity instead of glass fibers, this will result in extremely large shrinkage during product molding, resulting in The problem arises that it becomes difficult to obtain the desired product.
【０００５】[0005]
【発明が解決しようとする課題】そこで本発明は、繊維
補強体の取扱時に作業環境を損なわず、しかも取扱者の
手にガラス繊維が突き刺さることがなく、さらに繊維強
化ポリウレタン成形体の成形収縮を充分実用に耐える小
さなものにできる繊維補強ポリウレタン成形体の製造方
法を提供せんとするものである。SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to prevent the working environment from being damaged when handling fiber reinforced bodies, to prevent glass fibers from piercing the hands of the handlers, and to reduce molding shrinkage of fiber reinforced polyurethane molded bodies. The object of the present invention is to provide a method for manufacturing a fiber-reinforced polyurethane molded article that can be made small enough to withstand practical use.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するため
、本発明は、繊維補強体を成形型のキャビティに装置し
、そのキャビティ内にポリウレタン原料を注入し、繊維
補強体に含浸させて繊維補強体と一体に繊維強化ポリウ
レタン成形体を製造する際に、繊維補強体をガラス繊維
層と、そのガラス繊維層を覆ってガラス繊維層の端部か
ら所定量外方へ突出した有機繊維層とで構成し、そのガ
ラス繊維層端部から外方へ突出した有機維維層の端部を
成形型の分割面で挟んで繊維補強体をキャビティに装置
し、ポリウレタン原料の注入成形後に、前記有機繊維層
端部を除去することにしたのである。[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method for installing a fiber reinforcement in a cavity of a mold, injecting a polyurethane raw material into the cavity, impregnating the fiber reinforcement, and making the fibers When manufacturing a fiber-reinforced polyurethane molded body integrally with a reinforcing body, the fiber reinforcing body is made of a glass fiber layer and an organic fiber layer that covers the glass fiber layer and protrudes outward by a predetermined amount from the end of the glass fiber layer. The ends of the organic fiber layer protruding outward from the ends of the glass fiber layer are sandwiched between the dividing surfaces of the mold, and the fiber reinforcement is installed in the cavity. After injection molding of the polyurethane raw material, the organic fiber layer is It was decided to remove the ends of the fiber layer.
【０００７】[0007]
【作用】繊維補強体は、ガラス繊維層が有機繊維層で覆
われて外部に露出していないため、取扱時にガラス繊維
が飛び散ったり、ガラス繊維が手に突き刺さることがな
い。さらに、バリとして除去される有機繊維層の端部に
はガラス繊維層が内部に存在しないため、バリ除去の際
にガラス繊維が手に突き刺さることもない。しかも繊維
補強体端部を構成する有機繊維は、ガラス繊維に比べて
柔らかいため、バリをナイフ等で切除するのも容易であ
る。一方得られた繊維強化ポリウレタン成形体は、内部
の繊維補強体が線膨張率の低いガラス繊維層を有するた
め、実用上充分小さな成形収縮性を発揮する。[Function] Since the fiber reinforced body has a glass fiber layer covered with an organic fiber layer and is not exposed to the outside, the glass fibers will not fly away or the glass fibers will not stick into your hands when handled. Furthermore, since there is no glass fiber layer inside the end portion of the organic fiber layer that is removed as burrs, the glass fibers will not stick into your hand during burr removal. Moreover, since the organic fibers constituting the ends of the fiber reinforcement body are softer than glass fibers, it is easy to remove burrs with a knife or the like. On the other hand, the obtained fiber-reinforced polyurethane molded product exhibits a sufficiently small mold shrinkage for practical use because the internal fiber reinforcement has a glass fiber layer with a low coefficient of linear expansion.
【０００８】[0008]
【実施例】以下本発明を実施例に基づいて説明する。図
１ないし図４は本発明の一実施例に関する図で、そのう
ち図１は繊維補強体をキャビティに装置した後ポリウレ
タン原料を注入する際の成形型の断面図、図２は繊維補
強体の断面図、図３はポリウレタン原料の注入後を示す
成形型の断面図、図４は繊維補強体端部を除去した後の
繊維強化ポリウレタン成形体の断面図である。EXAMPLES The present invention will be explained below based on examples. 1 to 4 are views relating to one embodiment of the present invention, of which FIG. 1 is a sectional view of a mold when a polyurethane raw material is injected after a fiber reinforced body is installed in a cavity, and FIG. 2 is a cross-sectional view of a fiber reinforced body. 3 is a cross-sectional view of the mold after the polyurethane raw material is injected, and FIG. 4 is a cross-sectional view of the fiber-reinforced polyurethane molded body after the end portion of the fiber reinforced body has been removed.
【０００９】使用する繊維補強体１０は、ガラス繊維層
１２と、その表面を覆ってそのガラス繊維層１２端部か
ら所定量外方へ突出した有機繊維層１４、１４とからな
り、繊維補強体１０の端部が有機繊維層１４、１４のみ
で構成されている。ガラス繊維層１２の端部から外方へ
突出した有機繊維層端部１１、１１は、後記する成形型
の分割面でその端部１１、１１を挟むことができる程度
の大きさからなる。ガラス繊維層１２は、製品に応じて
所定の大きさとされるが、通常は製品とほぼ同じ大きさ
もしくは幾分小さくされる。ガラス繊維層１２としては
、ストランドガラスマット、チョップドガラスマット、
ガラス織布、ガラス不織布、ロービングガラス等が用い
られる。一方、有機繊維層１４、１４は、やしの繊維、
羊毛、パルプ、絹等の天然繊維またはビニロン、ポリア
ミド、ポリエステル、レーヨン等の合成繊維からなる織
布、不織布等が用いられる。
なお有機繊維層は、図示の２層のものに限らず、たとえ
ばガラス繊維層１２端部から外方へ突出した有機繊維層
端部１１、１１を３層構造にしてもよい。また有機繊維
層端部１１、１１を熱融着等により接合して、ガラス繊
維層１２と有機繊維層１４、１４を一体にしておくのが
、繊維補強体を取扱う上で好ましい。その他、繊維補強
体１０は有機繊維層を袋状のもので構成し、その内部に
ガラス繊維層が入るようにしたものであってもよい。The fiber reinforced body 10 used is composed of a glass fiber layer 12 and organic fiber layers 14, 14 that cover the surface of the glass fiber layer 12 and protrude outward by a predetermined amount from the ends of the glass fiber layer 12. The end portions of the fibers 10 are made up of only the organic fiber layers 14, 14. The organic fiber layer end portions 11, 11 protruding outward from the end portions of the glass fiber layer 12 are of such a size that the end portions 11, 11 can be sandwiched between the dividing surfaces of a mold to be described later. The glass fiber layer 12 has a predetermined size depending on the product, but is usually approximately the same size as the product or somewhat smaller. As the glass fiber layer 12, strand glass mat, chopped glass mat,
Glass woven fabric, glass nonwoven fabric, roving glass, etc. are used. On the other hand, the organic fiber layers 14, 14 are made of coconut fiber,
Woven or nonwoven fabrics made of natural fibers such as wool, pulp, and silk or synthetic fibers such as vinylon, polyamide, polyester, and rayon are used. Note that the organic fiber layer is not limited to the two-layer structure shown in the drawings, but may have a three-layer structure, for example, with the organic fiber layer end portions 11, 11 protruding outward from the end portions of the glass fiber layer 12. Further, in handling the fiber reinforcement, it is preferable to join the organic fiber layer ends 11, 11 by heat fusion or the like to make the glass fiber layer 12 and the organic fiber layers 14, 14 integral. Alternatively, the fiber reinforcing body 10 may be constructed of an organic fiber layer in the form of a bag, into which a glass fiber layer is inserted.
【００１０】その繊維補強体１０を用いて、次のように
繊維強化ポリウレタン成形体を製造する。[0010] Using the fiber reinforced body 10, a fiber reinforced polyurethane molded body is manufactured as follows.
【００１１】まず、上型１６と下型１８からなる成形型
２０の下型キャビティ面２２に表皮材２４を装置する。
成形型２０は、内部に製品形状からなるキャビティ２６
を有する。なお、その成形型は図示のような上下２分割
タイプのものに限らず、製品形状等に応じて多数割型が
適宜用いられる。表皮材２４は、必要に応じて用いられ
るもので、プラスチックレザー、またはファブリックか
らなるもの、あるいはファブリックにプラスチックフィ
ルム、ポリウレタンフォーム等が積層されたものが用い
られる。First, a skin material 24 is placed on the lower mold cavity surface 22 of the mold 20 consisting of the upper mold 16 and the lower mold 18. The mold 20 has a cavity 26 having a product shape inside.
has. Note that the mold is not limited to the upper and lower two-split type as shown in the figure, but a multi-split mold may be used as appropriate depending on the shape of the product. The skin material 24 is used as required, and may be made of plastic leather, fabric, or fabric laminated with plastic film, polyurethane foam, or the like.
【００１２】次いで下型１８のキャビティ２６に前記繊
維補強体１０を装置する。その際、繊維補強体１０は、
ガラス繊維層１２の存在しない有機繊維層端部１１、１
１が下型の分割面２８に位置するようにする。なお、成
形型のキャビティ２６形状によっては、繊維補強体１０
を下型キャビティ面２２に押し付けてキャビティ２６形
状に沿わせることが必要なこともある。Next, the fiber reinforcement 10 is installed in the cavity 26 of the lower mold 18. At that time, the fiber reinforcement body 10 is
Organic fiber layer end portion 11, 1 where glass fiber layer 12 is not present
1 is positioned on the dividing surface 28 of the lower mold. Note that depending on the shape of the cavity 26 of the mold, the fiber reinforcement 10
It may be necessary to press the mold against the lower mold cavity surface 22 to conform to the shape of the cavity 26.
【００１３】そして成形型のキャビティ２６にポリウレ
タン原料３０を注入し、成形型の下型１８と上型１６を
合わせて成形型２０を閉じる。これによって、有機繊維
層端部１１、１１が下型の分割面２８、２８と上型の分
割面３２、３２で挟まれ、繊維補強体１０が確実に成形
型キャビティに固定される。ポリウレタン原料は、ポリ
オール成分とポリイソシアネート成分からなるもので、
製品の用途等に応じた配合からなるものが用いられる。
キャビティに注入されたポリウレタン原料３０は、繊維
補強体１０に含浸し、反応硬化して繊維補強体１０およ
び表皮材２４と一体になった成形体になる。また、成形
型の分割面で挟まれた有機繊維層端部１１、１１はバリ
となる。なお、成形型の一部、例えば上型にポリウレタ
ン原料注入口（図示せず）を設けておき、成形型を閉じ
た状態でポリウレタン原料の注入を行なってもよい。Then, the polyurethane raw material 30 is injected into the cavity 26 of the mold, and the lower mold 18 and upper mold 16 are brought together and the mold 20 is closed. As a result, the organic fiber layer end portions 11, 11 are sandwiched between the dividing surfaces 28, 28 of the lower mold and the dividing surfaces 32, 32 of the upper mold, and the fiber reinforcement body 10 is reliably fixed to the mold cavity. Polyurethane raw materials consist of polyol components and polyisocyanate components.
The composition used is based on the intended use of the product. The polyurethane raw material 30 injected into the cavity impregnates the fiber reinforcement 10 and is reacted and cured to form a molded body integral with the fiber reinforcement 10 and the skin material 24. Further, the organic fiber layer end portions 11, 11 sandwiched between the dividing surfaces of the mold become burrs. Note that a polyurethane raw material injection port (not shown) may be provided in a part of the mold, for example, the upper mold, and the polyurethane raw material may be injected with the mold closed.
【００１４】その後、成形体を成形型２０から取り出し
、図４のようにバリを構成する有機繊維層端部１１、１
１および表皮材２４の端末をナイフ等で切除し、最終製
品たる繊維強化ポリウレタン成形体３４を得る。その際
、切除される有機繊維層端部１１、１１は、ガラス繊維
と比べて柔らかいため、該端部の切除を容易に行なうこ
とができ、またその切除時にガラス繊維が手に突き刺さ
ったり、空中に飛び散ったりすることがない。なお、図
中３６は繊維補強体１０に含浸して硬化したポリウレタ
ン樹脂を示す。Thereafter, the molded body is taken out from the mold 20, and as shown in FIG.
1 and the ends of the skin material 24 are cut off with a knife or the like to obtain a fiber-reinforced polyurethane molded body 34 as a final product. At this time, the organic fiber layer ends 11, 11 to be cut off are softer than glass fibers, so the ends can be easily cut off, and the glass fibers may not stick into your hand or air in the air. There will be no splatter. In addition, numeral 36 in the figure indicates a polyurethane resin impregnated into the fiber reinforcement body 10 and cured.
【００１５】表１は、前記のようにして製造した本発明
の実施例と、ガラス繊維のみを繊維補強体とする従来例
、および繊維補強体を有機繊維のみとする比較例につい
て測定した物性値である。Table 1 shows the physical property values measured for the example of the present invention manufactured as described above, the conventional example using only glass fiber as the fiber reinforcement, and the comparative example using only organic fiber as the fiber reinforcement. It is.
【００１６】[0016]
【表１】[Table 1]
【００１７】表１において成形収縮率の測定方法は、Ｊ
ＩＳＫ６９１１に準拠した。また曲げ強度および曲げ弾
性率はＪＩＳＫ７０５５、引張強度はＪＩＳＫ７０５４
、線膨張係数はＡＳＴＭＤ−６９６、Ｉｚｏｄ衝撃値は
ＪＩＳＫ７１１０、熱変形温度はＪＩＳＫ７２０７Ａ法
（曲げ応力１８．５ｋｇｆ／ｃｍ２）に準拠した。[0017] In Table 1, the method for measuring the molding shrinkage rate is J
Compliant with ISK6911. The bending strength and bending modulus are JISK7055, and the tensile strength is JISK7054.
The linear expansion coefficient was based on ASTM D-696, the Izod impact value was based on JISK7110, and the heat distortion temperature was based on JISK7207A method (bending stress 18.5 kgf/cm2).
【００１８】なお、実施例、従来例および比較例は、い
ずれも同一の形状からなる自動車用ピラーである。また
繊維補強体は、実施例が、有機繊維層を１００ｇ／ｍ２
のビニロンマット、ガラス繊維層を３００ｇ／ｍ２のコ
ンティニュアスストランドガラスマットとするもの、従
来例が６００ｇ／ｍ２のコンティニュアスストランドガ
ラスマットのみとするもの、そして比較例が３６０ｇ／
ｍ２のビニロンマットのみとするものである。ポリウレ
タン原料は、実施例、従来例および比較例のいずれも同
一のもので、次の配合からなる。[0018] The example, the conventional example, and the comparative example are all automobile pillars having the same shape. In addition, in the example, the fiber reinforcement body has an organic fiber layer of 100 g/m2.
A vinylon mat with a glass fiber layer of 300 g/m2, a conventional example with a continuous strand glass mat of 600 g/m2, and a comparative example with a continuous strand glass mat of 360 g/m2.
Only vinylon mats of m2 are used. The polyurethane raw materials were the same in all of the Examples, Conventional Examples, and Comparative Examples, and consisted of the following formulations.
【００１９】
・実施例、従来例および比較例に用いたポリウレタ
ン原料の配合
重量部
ポリオール：Ｇ３００
（分子量３００、３官能、旭
電化製）
７０ 触 媒：Ｎ，Ｎ−ジメチルシクロヘ
キシルアミン
２ 架橋剤：ＳＣ１０００
（シュークローズ系ポリオー
ル、 分子量１０
００、８官能、旭電化製）
３０ 界面活性剤：Ｌ５４２０
（シリコン系、日本ユニカー
製）
１ ポリイソシアネート：ＭＲ２００
（ポリメリックＭＤＩ、日本ポリ
ウレタン製） ２１０-Blend of polyurethane raw materials used in Examples, Conventional Examples, and Comparative Examples
Weight part
Polyol: G300 (molecular weight 300, trifunctional, manufactured by Asahi Denka)
70 Catalyst: N,N-dimethylcyclohexylamine
2 Crosslinking agent: SC1000 (sucrose polyol, molecular weight 10
00, 8 functions, manufactured by Asahi Denka)
30 Surfactant: L5420 (silicon type, manufactured by Nippon Unicar)
1 Polyisocyanate: MR200
(Polymeric MDI, manufactured by Nippon Polyurethane) 210
【００２０】
本発明の実施例は、ガラス繊維のみを繊維補強体とする
従来例に比べると、線膨張係数において幾分劣るものの
、有機繊維のみを繊維補強体とする比較例に比べ、線膨
張係数、成形収縮率、Ｉｚｏｄ衝撃値等において非常に
優れており、充分実用に耐えられるものであった。[0020]
Although the examples of the present invention are somewhat inferior in linear expansion coefficients compared to conventional examples in which only glass fibers are used as fiber reinforcements, they are superior in linear expansion coefficients and moldability compared to comparative examples in which only organic fibers are used as fiber reinforcements. It was excellent in terms of shrinkage rate, Izod impact value, etc., and was sufficiently durable for practical use.
【００２１】[0021]
【発明の効果】本発明は前記のように繊維補強体を、ガ
ラス繊維層と、そのガラス繊維層を覆ってガラス繊維層
の端部から所定量外方へ突出した有機繊維層とで構成し
たため、ガラス繊維が露出してなく、繊維補強体を成形
型のキャビティへ装置する際などにガラス繊維が飛び散
ったり、手に突き刺さることがない。さらに、バリとな
る繊維補強体端部が有機繊維層のみからなるため、その
バリの切除を容易に行なえ、その際ガラス繊維が飛び散
る虞もない。また、繊維強化ポリウレタン成形体中に残
る繊維補強体部分にはガラス繊維層を有するため、得ら
れる繊維強化ポリウレタン成形体の成形時の収縮性を小
さくできる効果もある。[Effects of the Invention] As described above, the fiber reinforced body of the present invention is composed of a glass fiber layer and an organic fiber layer that covers the glass fiber layer and protrudes outward by a predetermined amount from the end of the glass fiber layer. Since the glass fibers are not exposed, the glass fibers will not scatter or stick into your hand when installing the fiber reinforced body into the mold cavity. Furthermore, since the end portion of the fiber reinforced body that forms a burr is made of only the organic fiber layer, the burr can be easily removed, and there is no risk of the glass fibers scattering at this time. Furthermore, since the fiber reinforced body portion remaining in the fiber-reinforced polyurethane molded article has a glass fiber layer, it also has the effect of reducing shrinkage during molding of the resulting fiber-reinforced polyurethane molded article.
【図１】本発明の一実施例においてポリウレタン原料注
入時を示す成形型の断面図である。FIG. 1 is a sectional view of a mold during injection of a polyurethane raw material in an embodiment of the present invention.
【図２】本発明の一実施例に使用する、繊維補強体の断
面図である。FIG. 2 is a sectional view of a fiber reinforced body used in one embodiment of the present invention.
【図３】本発明の一実施例において、ポリウレタン原料
注入後を示す成形型の断面図である。FIG. 3 is a sectional view of a mold after injection of a polyurethane raw material in an embodiment of the present invention.
【図４】本発明の一実施例において、バリの切除後を示
す繊維強化ポリウレタン成形体の断面図である。FIG. 4 is a sectional view of a fiber-reinforced polyurethane molded article after burrs are removed in one embodiment of the present invention.
１０ 繊維補強体 １１ 有機繊維層端部 １２ ガラス繊維層 １４ 有機繊維層 １６ 上型 １８ 下型 ２０ 成形型 ２２ キャビティ面 ２４ 表皮材 ２６ キャビティ ２８ 下型分割面 ３０ ポリウレタン原料 ３２ 上型分割面 ３４ 繊維強化ポリウレタン成形体 10 Fiber reinforcement 11 End of organic fiber layer 12 Glass fiber layer 14 Organic fiber layer 16 Upper mold 18 Lower mold 20 Molding mold 22 Cavity surface 24 Skin material 26 Cavity 28 Lower mold dividing surface 30 Polyurethane raw materials 32 Upper mold dividing surface 34 Fiber-reinforced polyurethane molded body
Claims (1)
置し、そのキャビティ内にポリウレタン原料を注入し、
繊維補強体に含浸させて繊維補強体と一体に成形するこ
とにより繊維強化ポリウレタン成形体を製造する方法に
おいて、その繊維補強体を、ガラス繊維層と、そのガラ
ス繊維層を覆ってガラス繊維層の端部から所定量外方へ
突出した有機繊維層とで構成し、そのガラス繊維層端部
から外方へ突出した有機繊維層の端部を成形型の分割面
で挟んで繊維補強体をキャビティに装置し、ポリウレタ
ン原料の注入成形後に、前記有機繊維層の端部を除去す
ることを特徴とする繊維強化ポリウレタン成形体の製造
方法。Claim 1: A fiber reinforced body is placed in a cavity of a mold, and a polyurethane raw material is injected into the cavity.
In a method of manufacturing a fiber-reinforced polyurethane molded article by impregnating a fiber reinforcement and molding it integrally with the fiber reinforcement, the fiber reinforcement is applied to a glass fiber layer and a glass fiber layer covering the glass fiber layer. The fiber reinforced body is formed into a cavity by sandwiching the end of the organic fiber layer that protrudes outward from the end of the glass fiber layer by a predetermined amount between the dividing surfaces of the mold. 1. A method for producing a fiber-reinforced polyurethane molded article, characterized in that the end portion of the organic fiber layer is removed after injection molding of the polyurethane raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416284A JP2946240B2 (en) | 1990-12-27 | 1990-12-27 | Method for producing fiber-reinforced polyurethane molded article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2416284A JP2946240B2 (en) | 1990-12-27 | 1990-12-27 | Method for producing fiber-reinforced polyurethane molded article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04229212A true JPH04229212A (en) | 1992-08-18 |
| JP2946240B2 JP2946240B2 (en) | 1999-09-06 |
Family
ID=18524515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2416284A Expired - Lifetime JP2946240B2 (en) | 1990-12-27 | 1990-12-27 | Method for producing fiber-reinforced polyurethane molded article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2946240B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006062038A1 (en) | 2004-12-06 | 2006-06-15 | Toray Industries, Inc. | Molding precursor, process for producing molded fiber-reinforced resin, and molded fiber-reinforced resin |
| JP2006188050A (en) * | 2004-12-06 | 2006-07-20 | Toray Ind Inc | Molding precursor, process for manufacturing fiber-reinforced resin molding, and fiber-reinforced resin molding |
| JP2007196685A (en) * | 2005-12-28 | 2007-08-09 | Toray Ind Inc | Precursor for molding, rtm process and fiber-reinforced resin molding |
| EP1829661A1 (en) * | 2004-12-06 | 2007-09-05 | Toray Industries, Inc. | Molding precursor, process for producing molded fiber-reinforced resin, and molded fiber-reinforced resin |
-
1990
- 1990-12-27 JP JP2416284A patent/JP2946240B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006062038A1 (en) | 2004-12-06 | 2006-06-15 | Toray Industries, Inc. | Molding precursor, process for producing molded fiber-reinforced resin, and molded fiber-reinforced resin |
| JP2006188050A (en) * | 2004-12-06 | 2006-07-20 | Toray Ind Inc | Molding precursor, process for manufacturing fiber-reinforced resin molding, and fiber-reinforced resin molding |
| EP1829661A1 (en) * | 2004-12-06 | 2007-09-05 | Toray Industries, Inc. | Molding precursor, process for producing molded fiber-reinforced resin, and molded fiber-reinforced resin |
| EP1829661A4 (en) * | 2004-12-06 | 2010-08-04 | Toray Industries | Molding precursor, process for producing molded fiber-reinforced resin, and molded fiber-reinforced resin |
| US8257823B2 (en) | 2004-12-06 | 2012-09-04 | Toray Industries, Inc. | Molding precursor, process for producing molded fiber-reinforced resin, and molded fiber-reinforced resin |
| KR101256688B1 (en) * | 2004-12-06 | 2013-04-19 | 도레이 카부시키가이샤 | Molding precursor, process for producing molded fiber-reinforced resin, and molded fiber-reinforced resin |
| US8491988B2 (en) | 2004-12-06 | 2013-07-23 | Toray Industries, Inc. | Molding precursor, process for producing molded fiber-reinforced resin, and molded fiber-reinforced resin |
| JP2007196685A (en) * | 2005-12-28 | 2007-08-09 | Toray Ind Inc | Precursor for molding, rtm process and fiber-reinforced resin molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2946240B2 (en) | 1999-09-06 |
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