JPH0431481B2 - - Google Patents
Info
- Publication number
- JPH0431481B2 JPH0431481B2 JP60298920A JP29892085A JPH0431481B2 JP H0431481 B2 JPH0431481 B2 JP H0431481B2 JP 60298920 A JP60298920 A JP 60298920A JP 29892085 A JP29892085 A JP 29892085A JP H0431481 B2 JPH0431481 B2 JP H0431481B2
- Authority
- JP
- Japan
- Prior art keywords
- laminate
- fiber
- reinforcing fibers
- atmospheric pressure
- resin molded
- 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.)
- Expired - Lifetime
Links
- 229920005989 resin Polymers 0.000 claims description 44
- 239000011347 resin Substances 0.000 claims description 44
- 239000012783 reinforcing fiber Substances 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 17
- 229920001187 thermosetting polymer Polymers 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000000465 moulding Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 description 24
- 230000006837 decompression Effects 0.000 description 9
- 239000002344 surface layer Substances 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、浴槽・水容器等として用いられる繊
維強化樹脂成形品の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for producing fiber-reinforced resin molded products used as bathtubs, water containers, etc.
（従来の技術）
浴槽等に用いられる樹脂成形品は、水密性・耐
熱性等が要求される。従来、この種の樹脂成形品
は、例えば、ガラスフアイバー、カーボンフアイ
バー等の補強繊維を、12〜30mm程度の長さとして
熱硬化性樹脂に混入したラミネートの表面に、ゲ
ルコートを形成したものが一般的であつた。この
ような成形品では、ラミネート、あるいはゲルコ
ートとラミネートとの間に直径１mm以上の気泡が
存在すると、浴槽のように高温・低温が繰り返し
付与されることにより、ゲルコートが破壊され
る。ゲルコートが破壊されると、汚れが付着する
等、外観上見苦しくなると共に、漏水の原因にも
なる。このため、浴槽等に用いられる樹脂成形品
は、ラミネートあるいはラミネートとゲルコート
の間から有害な気泡を除去しなければならない。(Prior Art) Resin molded products used for bathtubs and the like are required to have watertightness, heat resistance, and the like. Conventionally, this type of resin molded product is generally made by forming a gel coat on the surface of a laminate in which reinforcing fibers such as glass fiber or carbon fiber are mixed into a thermosetting resin with a length of about 12 to 30 mm. It was spot on. In such molded products, if air bubbles with a diameter of 1 mm or more are present between the laminate or between the gel coat and the laminate, the gel coat will be destroyed by repeated application of high and low temperatures, such as in a bathtub. If the gel coat is destroyed, it will not only become unsightly due to the adhesion of dirt, but also cause water leakage. For this reason, harmful air bubbles must be removed from the laminate or between the laminate and the gel coat in resin molded products used for bathtubs and the like.
繊維強化樹脂のラミネート形成方法としては、
比較的簡便な設備で実施できるスプレーアツプ法
が知られている。該スプレーアツプ法は、所定長
（12〜30mm程度）の補強繊維を、霧化された熱硬
化性樹脂と共に成形型に吹付けて、ラミネートを
形成する。従来、スプレーアツプ法によりラミネ
ートを形成する際に、有害な気泡を除去するため
の方法が各種開発されている。例えば、特公昭59
−35765号公報には、減圧下で成形型に補強繊維
と共に樹脂を吹付けてラミネートを形成し、次い
で該ラミネートに気密表面層を形成して大気圧下
に露呈することにより気泡を崩壊させる方法が開
示されている。また、特開昭60−124237号公報に
は、成形型に補強繊維と共に樹脂を吹付けてラミ
ネートを形成し、次いで、該ラミネートに気密表
面層を形成して加圧する方法が開示されている。
いずれの方法においても、ラミネートに樹脂製の
気密表面層を形成する必要があり、該表面層に
は、補強繊維が含有されていないために、成形品
の強度が低下する。該表面層は、硬化時にクラツ
クが生じるおそれもある。特開昭60−124237号公
報に開示された方法では、成形品が完全に硬化す
るまでの間、該成形品を加圧タンク内に養生して
おかなければならず、該成形品が加圧タンクを占
有する時間が長くなつて生産性が悪くなり、経済
的でない。補強繊維の長さも12〜30mmであるた
め、大気泡が発生しやすい。特に成形品の隅部に
は大気泡が発生しやすく、脱泡作業は容易に行え
ない。このため、脱泡不備も発生しやすく、品質
にバラツキが生じる。 The method for forming a laminate of fiber reinforced resin is as follows:
A spray-up method is known that can be carried out using relatively simple equipment. In the spray-up method, reinforcing fibers of a predetermined length (approximately 12 to 30 mm) are sprayed onto a mold together with an atomized thermosetting resin to form a laminate. Conventionally, various methods have been developed for removing harmful air bubbles when forming a laminate by a spray-up method. For example, special public service in Showa 59
Publication No. 35765 describes a method in which a laminate is formed by spraying a resin together with reinforcing fibers into a mold under reduced pressure, and then an airtight surface layer is formed on the laminate and the air bubbles are collapsed by exposing the laminate to atmospheric pressure. is disclosed. Further, Japanese Patent Application Laid-open No. 124237/1983 discloses a method in which a laminate is formed by spraying a resin together with reinforcing fibers into a mold, and then an airtight surface layer is formed on the laminate and pressurized.
In either method, it is necessary to form an airtight surface layer made of resin on the laminate, and since the surface layer does not contain reinforcing fibers, the strength of the molded product is reduced. There is also a risk that cracks may occur in the surface layer during curing. In the method disclosed in JP-A-60-124237, the molded product must be cured in a pressurized tank until it is completely cured, and the molded product is not pressurized. The tank is occupied for a long time, which reduces productivity and is not economical. Since the length of the reinforcing fibers is 12 to 30 mm, large bubbles are likely to occur. Air bubbles are particularly likely to occur in the corners of molded products, making defoaming work difficult. For this reason, defoaming defects are likely to occur, resulting in variations in quality.
（発明が解決しようとする問題点）
本発明は、上記従来の問題点を解決するもので
あり、その目的は、ラミネート内に有害な気泡が
存在せず、従つて浴槽等のように、水密性・耐熱
性が要求される物品に用いて好適な繊維強化樹脂
成形品を脱泡作業を行うことなく、或いは行うと
しても極く僅かな作業のみで生産し得る繊維強化
樹脂成形品の製造方法を提供することにある。(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and its purpose is to prevent the presence of harmful air bubbles in the laminate, so that it can be made watertight, such as in bathtubs. A method for producing a fiber-reinforced resin molded product suitable for use in articles that require strength and heat resistance, which can be produced without defoaming work or with only a minimal amount of defoaming work. Our goal is to provide the following.
（問題点を解決するための手段）
本発明の繊維強化樹脂成形品の製造方法は、比
較的短い補強繊維および熱硬化性樹脂からなる第
１のラミネートと、比較的長い補強繊維および熱
硬化性樹脂からなる第２のラミネートとを有する
繊維強化樹脂成形品を、スプレーアツプ成形法に
より製造する方法であつて、大気圧以下の減圧下
で成形型に前記第１のラミネートを形成する工程
と、該第１のラミネートを大気圧下で半硬化する
工程と、半硬化した第１のラミネートに、前記第
２のラミネートを大気圧下で形成する工程と、第
１および第２のラミネートを大気圧下で硬化させ
る工程と、を包含し、そのことにより上記目的が
達成される。(Means for Solving the Problems) The method for producing a fiber-reinforced resin molded product of the present invention includes a first laminate made of relatively short reinforcing fibers and a thermosetting resin, and a first laminate made of relatively short reinforcing fibers and a thermosetting resin. A method for manufacturing a fiber-reinforced resin molded article having a second laminate made of resin by a spray-up molding method, the method comprising: forming the first laminate in a mold under reduced pressure below atmospheric pressure; semi-curing the first laminate under atmospheric pressure; forming the second laminate on the semi-cured first laminate under atmospheric pressure; and semi-curing the first and second laminates under atmospheric pressure. curing step, whereby the above object is achieved.
（実施例） 以下に本発明の実施例について説明する。(Example) Examples of the present invention will be described below.
本発明方法は、第１図に示すように、減圧室５
０内に配設された成形装置２により実施される。
該減圧室５０は、該室内を気密に維持し得る扉５
１を有する。成形装置２は、成形型２０と、スプ
レーアツプ機３０とを有する。成形型２０はター
ンテーブル２１上に配設されている。スプレーア
ツプ機３０は、ロボツト４０のアーム４１先端に
取付けられている。スプレーアツプ機３０は、熱
硬化性樹脂を噴霧する噴霧ノズル３１と、例えば
ガラス製の連続繊維条３３を所定の長さに切断し
て成形型２０に吹付ける繊維吹付ノズル３２とを
有する。連続繊維条３３は、ボビン３４から、減
圧室５０の天井に取付けられたガイド５２，５２
に案内されて繊維吹付ノズル３２に供給される。
噴霧ノズル３１には、熱硬化性樹脂、硬化剤、ノ
ズル部洗浄剤をそれぞれ供給する供給管が取付け
られており、全体給管は束ねられて供給管束３５
として、減圧室５０外に延出され、材料供給ユニ
ツト３６に接続されている。該材料供給ユニツト
３６は各供給管に所定の樹脂、硬化剤、洗浄剤を
それぞれ供給する。 In the method of the present invention, as shown in FIG.
This is carried out by a molding device 2 disposed in 0.
The decompression chamber 50 has a door 5 that can keep the chamber airtight.
1. The molding device 2 includes a mold 20 and a spray up machine 30. The mold 20 is arranged on a turntable 21. The spray up machine 30 is attached to the tip of an arm 41 of a robot 40. The spray up machine 30 has a spray nozzle 31 that sprays a thermosetting resin, and a fiber spray nozzle 32 that cuts a continuous fiber strip 33 made of glass into a predetermined length and sprays it onto the mold 20. The continuous fiber 33 is passed from the bobbin 34 to the guides 52, 52 attached to the ceiling of the decompression chamber 50.
The fibers are guided to the fiber spray nozzle 32 and supplied to the fiber spray nozzle 32.
The spray nozzle 31 is equipped with supply pipes for supplying the thermosetting resin, curing agent, and nozzle cleaning agent, respectively, and the entire supply pipes are bundled into a supply pipe bundle 35.
It extends outside the decompression chamber 50 and is connected to the material supply unit 36. The material supply unit 36 supplies predetermined resin, curing agent, and cleaning agent to each supply pipe, respectively.
ロボツト４０は、減圧室５０の外部に設けられ
た制御操作盤４２に、ケーブル４３を介して接続
されており、ロボツト４０は該制御操作盤４２に
て予めプログラミングされたプログラムによりア
ーム４１およびスプレーアツプ機３０を制御して
樹脂成形品を製造する。 The robot 40 is connected via a cable 43 to a control panel 42 provided outside the decompression chamber 50, and the robot 40 controls the arm 41 and spray up according to a program programmed in advance on the control panel 42. The machine 30 is controlled to manufacture resin molded products.
繊維強化樹脂成形品は、次のように製造され
る。扉５１を開放して、減圧室５０内を大気圧と
等圧にし、大気圧下で成形型２１にゲルコートを
形成する。成形品がゲルコートを必要としない場
合には、ゲルコートの形成は不要である。次い
で、扉５１を閉塞して、減圧室５０を0.1気圧程
度にまで減圧する。このような減圧下でロボツト
４０は、スプレーアツプ３０の噴霧ノズル３１か
ら熱硬化性樹脂を成形型２０に噴霧すると共に、
繊維吹付ノズル３２により連続繊維条３３を２〜
10mmの範囲に切断して、成形型２０に吹付け、２
〜10mmの比較的短い補強繊維および熱硬化性樹脂
からなる第１のラミネートを0.6〜1.5mmの厚さに
成形する。 The fiber-reinforced resin molded product is manufactured as follows. The door 51 is opened, the pressure inside the decompression chamber 50 is made equal to atmospheric pressure, and a gel coat is formed on the mold 21 under atmospheric pressure. If the molded article does not require a gel coat, formation of a gel coat is not necessary. Next, the door 51 is closed and the pressure in the decompression chamber 50 is reduced to about 0.1 atmosphere. Under such reduced pressure, the robot 40 sprays the thermosetting resin from the spray nozzle 31 of the spray up 30 onto the mold 20, and
Continuous fiber strips 33 are made from two to
Cut into a 10 mm range and spray onto the mold 20, 2
A first laminate of relatively short reinforcing fibers of ~10 mm and thermosetting resin is molded to a thickness of 0.6-1.5 mm.
次いで、該第１ラミネートが未硬化の状態で減
圧室５０の扉５１を開放し、減圧室５０内を大気
圧を等圧にする。このような状態で第１ラミネー
トを半硬化させる。このとき、減圧室５０内の圧
力が0.1気圧から大気圧までの10倍程度に上昇す
るため、第１のラミネートの表面は、大気の圧力
にて加圧されて、該第２ラミネート内の気泡の大
きさが略1/10に収縮される。 Next, the door 51 of the decompression chamber 50 is opened while the first laminate is not cured, and the atmospheric pressure inside the decompression chamber 50 is made equal to the atmospheric pressure. The first laminate is semi-cured in this state. At this time, the pressure inside the decompression chamber 50 rises from 0.1 atm to about 10 times the atmospheric pressure, so the surface of the first laminate is pressurized by atmospheric pressure and the air bubbles in the second laminate are The size of is reduced to approximately 1/10.
第１ラミネートが半硬化した状態で、ロボツト
４０は、扉５１が開放された大気圧下で噴霧ノズ
ル３１から熱硬化性樹脂を第１ラミネートに噴霧
すると共に、繊維吹付ノズル３２から連続繊維条
を25〜50mmの範囲で切断して第１ラミネートに吹
付け、25〜50mmの比較的長い補強繊維および熱硬
化性樹脂からなる第２のラミネートを所定の厚さ
に形成する。そして、扉５１が開放された大気圧
下で第１および第２のラミネートを硬化させるこ
とにより、両者が一体化した繊維強化樹脂成形品
が得られる。 With the first laminate semi-cured, the robot 40 sprays the thermosetting resin onto the first laminate from the spray nozzle 31 under atmospheric pressure with the door 51 open, and also sprays continuous fibers from the fiber spray nozzle 32. The first laminate is cut to a length of 25 to 50 mm and sprayed to form a second laminate of relatively long reinforcing fibers of 25 to 50 mm and a thermosetting resin to a predetermined thickness. Then, by curing the first and second laminates under atmospheric pressure with the door 51 open, a fiber-reinforced resin molded product in which both are integrated is obtained.
このようにして形成される繊維強化樹脂成形品
は、第２図に示すように、長さが2.0〜10.0mmの
補強繊維１１ａおよび熱硬化性樹脂１１ｂからな
る第１のラミネート１１と、長さが25.0〜50.0mm
の補強繊維１２ａおよび熱硬化性樹脂１２ｂから
なる第２のラミネート１２と、第１のラミネート
１１表面にトツプコートとして形成されたゲルコ
ート１３とを有する。 As shown in FIG. 2, the fiber-reinforced resin molded product formed in this way has a first laminate 11 made of reinforcing fibers 11a with a length of 2.0 to 10.0 mm and a thermosetting resin 11b, and a first laminate 11 with a length of 2.0 to 10.0 mm. is 25.0~50.0mm
The second laminate 12 is made of reinforcing fibers 12a and thermosetting resin 12b, and the gel coat 13 is formed as a top coat on the surface of the first laminate 11.
第１のラミネート１１に含有される補強繊維１
１ａは、従来のラミネートに含有される補強繊維
の長さに比較すると短く、該ラミネート１１の機
械的強度はわずかながら低下するが、樹脂とのな
じみがよく、繊維間のブリツジ等の絡みによる空
隙・気泡は小さくなると共に少なくなる。補強繊
維の長さが25〜50mmである従来のラミネートで
は、大気圧下で直径が2.0〜3.0mm程度の気泡が生
じるのに対し、本発明のように補強繊維の長さが
10mm程度になれば、大気圧下で直径が1.0〜1.5mm
程度の気泡が生じ、さらに補強繊維の長さが６mm
以下になれば、大気圧下で直径が0.5〜1.0mmのき
わめて小さい気泡が発生するにすぎない。ラミネ
ートの機械的強度は、補強繊維の長さが10mm程度
になれば、補強繊維の長さが25〜50mmの従来のラ
ミネートの80〜90％の強度を有するが、補強繊維
の長さが６mm以下になると強度は半減し、２mm以
下では硬化収縮によるクラツクは防止し得るもの
の、補強効果はほとんど発揮されない。また、補
強繊維の長さが２mm未満では、スプレーアツプ機
による繊維の切断・吹付けが困難でもある。この
ため、第１のラミネート１１に含有される補強繊
維は２mm以上とすることが望ましい。 Reinforcing fiber 1 contained in first laminate 11
1a is short compared to the length of reinforcing fibers contained in conventional laminates, and the mechanical strength of the laminate 11 is slightly reduced, but it is compatible with the resin and eliminates voids due to entanglements such as bridges between fibers.・The number of bubbles decreases as they become smaller. In conventional laminates in which the length of the reinforcing fibers is 25 to 50 mm, bubbles with a diameter of approximately 2.0 to 3.0 mm are generated under atmospheric pressure, whereas in the present invention, the length of the reinforcing fibers is 25 to 50 mm.
If it is about 10mm, the diameter will be 1.0 to 1.5mm under atmospheric pressure.
Some air bubbles were generated, and the length of the reinforcing fiber was 6 mm.
Below that, only extremely small bubbles with a diameter of 0.5 to 1.0 mm will be generated under atmospheric pressure. The mechanical strength of the laminate is 80 to 90% of the strength of conventional laminates with reinforcing fibers of 25 to 50 mm when the length of the reinforcing fibers is about 10 mm, but when the length of reinforcing fibers is 6 mm If it is less than 2 mm, the strength will be halved, and if it is less than 2 mm, cracks due to curing shrinkage can be prevented, but the reinforcing effect will hardly be exhibited. Furthermore, if the length of the reinforcing fibers is less than 2 mm, it is difficult to cut and spray the fibers using a spray up machine. For this reason, it is desirable that the reinforcing fibers contained in the first laminate 11 be 2 mm or more.
長さが10mm程度の補強繊維を有するラミネート
では、大気圧下では直径が1.0〜1.5mmの気泡が発
生するが、減圧下でラミネートを形成すると、大
気圧下では気泡は縮小する。0.1気圧下で形成さ
れた気泡は、大気圧下では体積は略1/10に縮小さ
れ、直径は1/2.1程度にまで縮小される。従つて、
補強繊維の長さが10mm程度の補強繊維を有するラ
ミネートの気泡の直径も1.0mm以下になる。従つ
て、第１のラミネートでは補強繊維の長さを10mm
以下にすることが望ましい。 In a laminate with reinforcing fibers of about 10 mm in length, bubbles with a diameter of 1.0 to 1.5 mm are generated under atmospheric pressure, but when the laminate is formed under reduced pressure, the bubbles shrink under atmospheric pressure. The volume of a bubble formed under 0.1 atmosphere is reduced to approximately 1/10 and the diameter is reduced to approximately 1/2.1 under atmospheric pressure. Therefore,
The diameter of the bubbles in a laminate with reinforcing fibers having a length of about 10 mm is also 1.0 mm or less. Therefore, in the first laminate, the reinforcing fiber length is 10 mm.
It is desirable to do the following.
第１のラミネート１１における補強繊維１１ａ
の含有量としては、ラミネート100重量％に対し
て25〜30重量％、好ましくは28重量％程度であ
る。補強繊維の含有量がこの範囲内にあれば、ラ
ミネート表面に樹脂が浮き上がり、補強繊維が表
面に露出するおそれがない。 Reinforcing fibers 11a in first laminate 11
The content is 25 to 30% by weight, preferably about 28% by weight, based on 100% by weight of the laminate. If the reinforcing fiber content is within this range, there is no fear that the resin will float on the laminate surface and the reinforcing fibers will be exposed on the surface.
第１のラミネート１１の厚さは、0.6mm未満で
は該ラミネート自身が強化層とはなり得ない。
1.5mm以上になると、補強繊維が短いために、成
形時に液垂れが生じるおそれがある。このため、
0.6mm〜1.5mmの範囲が好ましい。 If the thickness of the first laminate 11 is less than 0.6 mm, the laminate itself cannot serve as a reinforcing layer.
If it is 1.5 mm or more, the reinforcing fibers are short and there is a risk of dripping during molding. For this reason,
A range of 0.6 mm to 1.5 mm is preferred.
大気圧下で形成された第２のラミネート１２に
含有される補強繊維１２ａの長さは、25〜50mm程
度である。このため、直径が１mm以上の有害な気
泡が発生するが、このような気泡は、第１のラミ
ネート１１の存在により表面に浮上することがな
く、ゲルコート１３を破壊させるものではない。
また、該ラミネート１２自身の強度を低下させる
ものでもない。しかし、気泡は少ない方が好まし
く、第２のラミネートに気泡が多量に含まれるよ
うな場合には脱泡を行う。しかし、この脱泡作業
を行う場合は第２のラミネートに対して施すもの
であるから念入りに行う必要はなく、極く簡単な
作業でよい。 The length of the reinforcing fibers 12a contained in the second laminate 12 formed under atmospheric pressure is approximately 25 to 50 mm. For this reason, harmful air bubbles with a diameter of 1 mm or more are generated, but such air bubbles do not float to the surface due to the presence of the first laminate 11 and do not destroy the gel coat 13.
Further, the strength of the laminate 12 itself is not reduced. However, it is preferable to have fewer air bubbles, and if the second laminate contains a large amount of air bubbles, defoaming is performed. However, when performing this defoaming work, since it is performed on the second laminate, there is no need to perform it carefully, and it can be an extremely simple work.
各ラミネート１１および１２における補強繊維
としては、ガラス繊維、カーボン繊維、アラミド
繊維等が用いられる。また熱硬化性樹脂として
は、不飽和ポリエステル樹脂、エポキシ樹脂、フ
エノール樹脂等が用いられる。 As reinforcing fibers in each laminate 11 and 12, glass fibers, carbon fibers, aramid fibers, etc. are used. Further, as the thermosetting resin, unsaturated polyester resin, epoxy resin, phenol resin, etc. are used.
（発明の効果）
本発明は、このように、有害な気泡をほとんど
有さない第１のラミネートを、脱泡作業を行うこ
となく、或いは極く僅かの脱泡作業で、形成する
ことができ、ゲルコートの破壊等を招来するおそ
れがなく、水密性・耐熱性に優れた樹脂成形品が
きわめて容易に得られる。減圧下で形成される第
１のラミネートは、厚さも薄く減圧室内を占有す
る時間も短いため、生産性も著しく向上する。(Effects of the Invention) As described above, the present invention can form a first laminate containing almost no harmful air bubbles without performing defoaming work or with very little defoaming work. , there is no risk of causing damage to the gel coat, and resin molded products with excellent watertightness and heat resistance can be obtained very easily. The first laminate formed under reduced pressure has a small thickness and occupies the reduced pressure chamber for a short time, so that productivity is significantly improved.
第１図は、本発明方法の実施に使用される装置
の一例を示す模式図、第２図は該装置により製造
される繊維強化樹脂成形品の一例を示す断面図で
ある。
１１……第１のラミネート、１１ａ……補強繊
維、１１ｂ……熱硬化性樹脂、１２……第２のラ
ミネート、１２ａ……補強繊維、１２ｂ……熱硬
化性樹脂、２０……成形型、３０……スプレーア
ツプ機、３１……噴霧ノズル、３２……繊維吹付
ノズル。
FIG. 1 is a schematic diagram showing an example of an apparatus used to carry out the method of the present invention, and FIG. 2 is a sectional view showing an example of a fiber-reinforced resin molded product manufactured by the apparatus. 11... First laminate, 11a... Reinforcing fiber, 11b... Thermosetting resin, 12... Second laminate, 12a... Reinforcing fiber, 12b... Thermosetting resin, 20... Molding mold, 30... Spray up machine, 31... Spray nozzle, 32... Fiber spray nozzle.
Claims (1)
なる第１のラミネートと、比較的長い補強繊維お
よび熱硬化性樹脂からなる第２のラミネートとを
有する繊維強化樹脂成形品を、スプレーアツプ成
形法により製造する方法であつて、 大気圧以下の減圧下で成形型に前記第１のラミ
ネートを形成する工程と、 該第１のラミネートを大気圧下で半硬化する工
程と、 半硬化した第１のラミネートに、前記第２のラ
ミネートを大気圧下で形成する工程と、 第１および第２のラミネートを大気圧下で硬化
させる工程と、 を包含する繊維強化樹脂成形品の製造方法。 ２ 前記第１のラミネートの補強繊維の長さが２
〜10mmであり、前記第２のラミネートの補強繊維
の長さが25〜50mmである特許請求の範囲第１項に
記載の繊維強化樹脂成形品の製造方法。 ３ 前記第１のラミネートの厚さが0.6〜1.5mmで
ある特許請求の範囲第１項に記載の繊維強化樹脂
成形品の製造方法。 ４ 前記第１のラミネートにおける補強繊維の含
有量が25〜30重量％である特許請求の範囲第１項
に記載の繊維強化樹脂成形品の製造方法。 ５ 前記成形型にはゲルコートが形成されている
特許請求の範囲第１項に記載の繊維強化樹脂成形
品の製造方法。[Claims] 1. A fiber-reinforced resin molded product having a first laminate made of relatively short reinforcing fibers and a thermosetting resin, and a second laminate made of relatively long reinforcing fibers and a thermosetting resin. , a method of manufacturing by spray-up molding, comprising: forming the first laminate in a mold under reduced pressure below atmospheric pressure; semi-curing the first laminate under atmospheric pressure; A fiber-reinforced resin molded product comprising: forming the second laminate on the semi-cured first laminate under atmospheric pressure; and curing the first and second laminates under atmospheric pressure. Production method. 2 The length of the reinforcing fibers of the first laminate is 2
10 mm, and the length of the reinforcing fibers of the second laminate is 25 to 50 mm. The method for manufacturing a fiber reinforced resin molded article according to claim 1. 3. The method for manufacturing a fiber-reinforced resin molded product according to claim 1, wherein the first laminate has a thickness of 0.6 to 1.5 mm. 4. The method for producing a fiber-reinforced resin molded article according to claim 1, wherein the content of reinforcing fibers in the first laminate is 25 to 30% by weight. 5. The method for manufacturing a fiber-reinforced resin molded article according to claim 1, wherein the mold is provided with a gel coat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60298920A JPS62152821A (en) | 1985-12-27 | 1985-12-27 | Manufacture of fiber reinforced resin molded product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60298920A JPS62152821A (en) | 1985-12-27 | 1985-12-27 | Manufacture of fiber reinforced resin molded product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62152821A JPS62152821A (en) | 1987-07-07 |
| JPH0431481B2 true JPH0431481B2 (en) | 1992-05-26 |
Family
ID=17865887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60298920A Granted JPS62152821A (en) | 1985-12-27 | 1985-12-27 | Manufacture of fiber reinforced resin molded product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62152821A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8927100B2 (en) | 2008-09-17 | 2015-01-06 | Avery Dennison Corporation | Activatable adhesive, labels, and related methods |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2972672B1 (en) * | 2011-03-18 | 2013-03-15 | Coriolis Composites Attn Olivier Bouroullec | FIBER APPLICATION MACHINE WITH SAFETY SYSTEM |
| EP4474134A1 (en) * | 2023-05-15 | 2024-12-11 | Thetis S.r.l. | 3d printer for production of high-performance structural parts |
-
1985
- 1985-12-27 JP JP60298920A patent/JPS62152821A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8927100B2 (en) | 2008-09-17 | 2015-01-06 | Avery Dennison Corporation | Activatable adhesive, labels, and related methods |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62152821A (en) | 1987-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6723273B2 (en) | Curable liquid sealant used as vacuum bag in composite manufacturing | |
| EP1162049B1 (en) | Method of forming a composite article with a textured surface | |
| EP0434814A1 (en) | Molded composites | |
| JPH0431481B2 (en) | ||
| JPH0524833B2 (en) | ||
| JPH05301295A (en) | Manufacture of fiber-reinforced resin molded product | |
| DE69918137D1 (en) | METHOD FOR PRODUCING A PRESSURE TANK FROM COMPOSITE MATERIAL | |
| JPH0295832A (en) | Manufacture of fibre reinforced resin molding | |
| JP3360745B2 (en) | Manufacturing method of fiber-reinforced plastic molded product | |
| JP3496206B2 (en) | Manufacturing method of fiber-reinforced plastic molded product | |
| JPS59201822A (en) | Preparation of fiber reinforced plastic molded article | |
| JP2001150559A (en) | Fiber-reinforced resin molded product and method for producing the same | |
| JP3151374B2 (en) | Manufacturing method of fiber-reinforced resin laminated molded product | |
| JPS63176138A (en) | Manufacture of fiber-reinforced synthetic resin molded product | |
| JP2001030429A (en) | Fiber-reinforced resin molding | |
| JPH0825492A (en) | Method for producing fiber-reinforced plastic molding | |
| JPH05318572A (en) | Method for molding fiber-reinforced sheet-shaped molding material | |
| JPH09131825A (en) | Fiber-reinforced resin molded product and manufacturing method thereof | |
| JPS6364707A (en) | Manufacture of fiber reinforced plastic molded product and manufacturing equipment | |
| JPS61268412A (en) | Integral foam molding | |
| JPH07112488A (en) | Production of fiber reinforced plastic molded product | |
| JPS6356437A (en) | Preparation of fiber reinforced synthetic resin molded article | |
| JPH1034757A (en) | Fiber reinforced resin molded product and its manufacture | |
| JPS63170020A (en) | Manufacture of fiber-reinforced plastic molded product | |
| JPH079463A (en) | Resin laminated molded product and production thereof |