JPH04339608A - Molding process - Google Patents
Molding processInfo
- Publication number
- JPH04339608A JPH04339608A JP3111792A JP11179291A JPH04339608A JP H04339608 A JPH04339608 A JP H04339608A JP 3111792 A JP3111792 A JP 3111792A JP 11179291 A JP11179291 A JP 11179291A JP H04339608 A JPH04339608 A JP H04339608A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- filler
- bag
- cavity
- molding method
- 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
- 238000000465 moulding Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 18
- 229920001971 elastomer Polymers 0.000 claims abstract description 24
- 239000000806 elastomer Substances 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims description 24
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 2
- 230000002787 reinforcement Effects 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 description 12
- 238000001879 gelation Methods 0.000 description 7
- 239000012783 reinforcing fiber Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229920002379 silicone rubber Polymers 0.000 description 4
- 239000004945 silicone rubber Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 239000000499 gel Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、成形方法に関し、さら
に詳しくは、ＲＴＭ成形法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding method, and more particularly to an RTM molding method.
【０００２】0002
【従来の技術】所謂、ガラス繊維強化材に熱硬化性樹脂
を含浸させて両者の反応による成形品を得る成形法の一
つにＲＴＭ（Ｒｅｓｉｎ Ｔｒａｎｓｆｅｒ Ｍｏ
ｌｄｉｎｇ）と称される成形方法がある。上述したＲＴ
Ｍでは、ポリエステル、シリコ−ン、不飽和ポリエステ
ル、エポキシ等の熱硬化性樹脂をガラス繊維等の強化材
が装填されている型内に注入し、両者間での含浸作用を
経て反応硬化させることが行われている。[Prior Art] RTM (Resin Transfer Mo
There is a molding method called lding. RT mentioned above
In M, a thermosetting resin such as polyester, silicone, unsaturated polyester, or epoxy is injected into a mold filled with reinforcing material such as glass fiber, and the resin is reacted and cured through impregnation between the two. is being carried out.
【０００３】そして、ＲＴＭ成形法を実行するにあたっ
ては、雄型と雌型との間に形成されるキャビティ内に上
述した強化材繊維および充填剤を注入して反応硬化させ
るようになっている。そして、上述した雄型および雌型
は、成形開始前に型締めされ、上述したキャビティの寸
法が変化しない状態に維持されるようになっている。[0003] In carrying out the RTM molding method, the above-mentioned reinforcing fibers and filler are injected into a cavity formed between a male mold and a female mold and cured by reaction. The above-described male mold and female mold are clamped before the start of molding, so that the dimensions of the cavity described above remain unchanged.
【０００４】0004
【発明が解決しようとする課題】ところで、上述したＲ
ＴＭにおいては、雄型および雌型のうち、成形品として
完成した場合に外側、所謂、成形品における外部に露呈
する側に位置する型の表面は、例えば、鏡面仕上げを施
されて面の平滑性を維持され、この面を成形品の表面に
転写することで意匠上の見栄えを良くする場合がある。
しかしながら、上述した雄型および雌型は型締めが行わ
れることで加圧力を一定にされてしまうので、仮にキャ
ビティの寸法に誤差があるとその誤差を加圧により打ち
消すことができないままとされるために充填剤のゲル化
が進行した場合に充填剤の収縮による「ヒケ」が発生す
ることがあり、この現象により成形品の外表面に相当す
る面の平滑性を損なわれることがある。[Problem to be solved by the invention] By the way, the above-mentioned R
In TM, the surface of the male mold and the female mold, which are located on the outside when the molded product is completed, that is, the side that is exposed to the outside of the molded product, is, for example, given a mirror finish to make the surface smooth. The appearance of the design may be improved by transferring this surface to the surface of the molded product. However, in the above-mentioned male and female molds, the pressurizing force is kept constant when the mold is clamped, so if there is an error in the cavity dimensions, the error cannot be canceled out by applying pressure. Therefore, when gelation of the filler progresses, "sink marks" may occur due to shrinkage of the filler, and this phenomenon may impair the smoothness of the surface corresponding to the outer surface of the molded product.
【０００５】そこで、上述した成形品の外表面に相当す
る面と対向する側と反対側に対向する型の表面に、弾性
を持ち一様厚さに設定された耐油性のシリコ−ンゴム等
を用いた袋状エラストマを設け、成形品の外表面に対向
する側の型表面に充填剤を押しつけてその型の面の転写
性を改善することが考えられるが、弾性を重視すること
でシリコ−ンゴムを用いた場合には、シリコ−ンゴムの
熱特性が比較的悪いために充填剤のゲル化が進行した場
合の「ヒケ」に関する問題を完全に解決することは困難
とされている。つまり、上述した成形品の外表面に相当
する側に対向している型の内部には、充填剤のゲル化を
制御して、型表面の転写性を改善するための加熱部材が
設けてあるが、この成形品の外表面と対向する側と反対
側に位置する型表面に温度制御のできないシリコ−ンゴ
ムを配置した場合には、成形品の外表面側に対してのみ
温度制御が行われるだけであるので、転写性の有効な改
善を期待することはできず、収縮による「ヒケ」が解消
されないことになる。[0005] Therefore, oil-resistant silicone rubber or the like, which has elasticity and is set to a uniform thickness, is applied to the surface of the mold opposite to the surface corresponding to the outer surface of the above-mentioned molded product. It is conceivable to improve the transferability of the surface of the mold by providing a bag-shaped elastomer and pressing the filler onto the mold surface on the side opposite to the outer surface of the molded product, but by emphasizing elasticity, silicone When silicone rubber is used, it is difficult to completely solve the problem of "sink marks" when gelation of the filler progresses due to the relatively poor thermal properties of silicone rubber. In other words, inside the mold facing the side corresponding to the outer surface of the molded product described above, a heating member is provided to control the gelation of the filler and improve the transferability of the mold surface. However, if silicone rubber whose temperature cannot be controlled is placed on the mold surface located on the opposite side to the side facing the outside surface of the molded product, temperature control will be performed only on the outside surface side of the molded product. Therefore, no effective improvement in transferability can be expected, and "sink marks" caused by shrinkage will not be eliminated.
【０００６】そこで、本発明の目的は、上述した従来の
成形法における問題に鑑み、成形品の外表面での平滑性
を良好にすることができ、意匠上での見栄えを損なわな
いで済む成形方法を得ることにある。SUMMARY OF THE INVENTION In view of the above-mentioned problems with the conventional molding method, an object of the present invention is to provide a molding method that can improve the smoothness of the outer surface of a molded product without impairing its design appearance. It's about finding a way.
【０００７】[0007]
【課題を解決するための手段】この目的を達成するため
、本発明は、雄型と雌型とで構成される成形型のキャビ
ティ内に強化材繊維を装填し、このキャビテイ内に充填
剤として熱硬化性樹脂を注入して強化材繊維に充填剤を
含浸させて反応硬化により成形するＲＴＭ成形法におい
て、上記雄型と雌型のうち、成形品の外表面に相当する
側の型と反対側に位置する型における上記キャビティ側
の面に耐圧性および耐溶剤性の材質で構成された袋状の
エラストマを配置し、この袋状エラストマを膨張させる
ための加圧媒体として袋状エラストマ内と外部との間を
循環可能な熱媒体を用い、この熱媒体の温度を上記成形
品の外表面に相当する側の型における温度に応じた値に
設定して循環させるようにしたことを特徴としている。[Means for Solving the Problems] In order to achieve this object, the present invention involves loading reinforcing fibers into the cavity of a mold consisting of a male mold and a female mold, and filling the cavity with reinforcing fibers as a filler. In the RTM molding method, in which a thermosetting resin is injected to impregnate reinforcing fibers with a filler and molded by reaction curing, the mold on the side corresponding to the outer surface of the molded product and the opposite side of the male mold and female mold are used. A bag-shaped elastomer made of a pressure-resistant and solvent-resistant material is arranged on the cavity side surface of the mold located on the side, and a pressure medium is used to inflate the bag-shaped elastomer. A heating medium that can be circulated between the outside and the outside is used, and the temperature of the heating medium is set to a value corresponding to the temperature in the mold on the side corresponding to the outer surface of the molded product, and the heating medium is circulated. There is.
【０００８】また本発明は、袋状エラストマの膨張時で
の大きさとして、キャビティ内に注入された充填剤のゲ
ル化が開始されたときにその充填剤を成形品の外表面に
相当する側の型の表面に押しつけられることが可能な程
度の大きさとされているいることを特徴としている。[0008] Furthermore, the present invention provides a measure of the size of the expanded bag-like elastomer when the filler injected into the cavity starts to gel. It is characterized by being large enough to be pressed against the surface of the mold.
【０００９】さらに本発明は、熱媒体の循環部の一部が
、充填剤の注入口の周囲を囲繞した状態で設けてあるこ
とを特徴としている。Furthermore, the present invention is characterized in that a part of the heat medium circulation section is provided so as to surround the filler injection port.
【００１０】0010
【作用】本発明によれば、袋状エラストマを膨張させる
ための加圧媒体として用いられる熱媒体により、充填剤
の反応硬化を調整しながら、成形品の外表面側の型の面
が充分に転写された状態を維持しながら成形を終えるこ
とができる。[Operation] According to the present invention, the heating medium used as a pressurizing medium for expanding the bag-like elastomer allows the surface of the mold on the outer surface side of the molded product to be sufficiently heated while controlling the reaction hardening of the filler. Molding can be completed while maintaining the transferred state.
【００１１】[0011]
【実施例】以下、図１乃至図３において、本発明実施例
の詳細を説明する。[Embodiment] Details of an embodiment of the present invention will be explained below with reference to FIGS. 1 to 3.
【００１２】図１は本発明実施例による成形方法を実行
するための成形型の模型図であり、同図において、成形
型１は雄型１Ａと雌型１Ｂとで構成され、その両型１Ａ
および１Ｂは、対面位置に成形品の形状に沿ったキャビ
ティが形成できる寸法を設定されている。上述した型の
うち、成形品の外表面に対向する側の型、本実施例では
雌型１Ｂにおけるキャビティ側に位置する面の近傍内部
には、例えば、ヒ−タ等の加熱部材２が装備してあり、
この面の温度を一定温度に維持するようになっている。FIG. 1 is a model diagram of a mold for carrying out a molding method according to an embodiment of the present invention. In the figure, a mold 1 is composed of a male mold 1A and a female mold 1B, both of which are
and 1B are dimensioned so that a cavity can be formed in the facing position along the shape of the molded product. Of the above-mentioned molds, a heating member 2 such as a heater is installed inside the mold on the side facing the outer surface of the molded product, in the vicinity of the surface located on the cavity side of the female mold 1B in this embodiment. It has been done,
The temperature of this surface is maintained at a constant temperature.
【００１３】また、上述した成形品の外表面と反対側の
面、所謂、非製品面に対向する側の型、本実施例では雄
型１Ａには、キャビティに対向する面に沿って袋状のエ
ラストマ３が設けてある。上述した袋状エラストマ３は
、耐圧性および耐油性をもつ材質で構成されており、そ
の一部には内部に袋状エラストマ３を膨張させるための
加圧媒体を封入した循環路４が接続されている。すなわ
ち、上述した循環路４は、例えば、内部に加圧媒体とし
て水等の熱媒体を封入されており、図２に示すように、
雄型１Ａのキャビティ側に連通している充填剤の注入口
５と同じ位置において注入口５の周囲を囲繞する状態で
袋状エラストマ３に接続してある。そして、この循環路
４は、図示しない加熱手段を通過するようになっており
、封入されている熱媒体の温度を制御できるようになっ
ている。[0013] Furthermore, the mold on the side opposite to the outer surface of the molded product described above, the so-called non-product surface, in this example, the male mold 1A, has a bag-like shape along the surface facing the cavity. An elastomer 3 is provided. The bag-like elastomer 3 described above is made of a pressure-resistant and oil-resistant material, and a part of the bag-like elastomer 3 is connected to a circulation path 4 filled with a pressurized medium for inflating the bag-like elastomer 3. ing. That is, the above-mentioned circulation path 4 has, for example, a heat medium such as water sealed therein as a pressurized medium, and as shown in FIG.
It is connected to the bag-shaped elastomer 3 so as to surround the injection port 5 at the same position as the filler injection port 5 communicating with the cavity side of the male mold 1A. The circulation path 4 passes through a heating means (not shown), so that the temperature of the enclosed heat medium can be controlled.
【００１４】一方、この循環路４の構成としては、図２
に示したように袋状エラストマ３との接続位置を注入口
５と同じ位置とすることに限らず、例えば、図３に示す
ように、袋状エラストマ３を通路の一部とした構成とし
、袋状エラストマ３を通過した箇所に設けてあるタンク
６内で分割し、一方の循環路に設けてあるポンプ７によ
って循環させるようにすることも可能である。この場合
には、タンク６内にヒ−タ８を設けるとともに、このヒ
−タ８をタンク６内に位置する温度センサ９によって動
作制御させるようにして熱媒体である水の温度を雌型１
Ｂ側の加熱部材２による温度設定に応じた値に設定する
ことができるようにしてある。On the other hand, the configuration of this circulation path 4 is shown in FIG.
As shown in FIG. 3, the connection position with the bag-like elastomer 3 is not limited to the same position as the injection port 5, but for example, as shown in FIG. It is also possible to divide the elastomer into a tank 6 provided at a point where it passes through the bag-like elastomer 3, and to circulate it using a pump 7 provided in one of the circulation paths. In this case, a heater 8 is provided inside the tank 6, and the operation of the heater 8 is controlled by a temperature sensor 9 located inside the tank 6, so that the temperature of water, which is a heat medium, can be adjusted to the female mold 1.
The temperature can be set to a value corresponding to the temperature setting by the heating member 2 on the B side.
【００１５】つまり、この雄型１Ａ側での熱媒体の温度
と雌型１Ｂ側での加熱部材２の温度とを制御することに
より、充填剤の反応硬化の開始時期あるいは硬化時間の
調整を行えるようになっている。In other words, by controlling the temperature of the heating medium on the male mold 1A side and the temperature of the heating member 2 on the female mold 1B side, the start timing or curing time of the reaction curing of the filler can be adjusted. It looks like this.
【００１６】本実施例における袋状エラストマ３の膨張
時期としては、成形型１の型締めが行われて充填剤の注
入が開始される前とされ、その膨張状態は充填剤のゲル
化が開始されるのに順じて斬時的に膨張する状態を設定
される。In this embodiment, the expansion timing of the bag-shaped elastomer 3 is before the mold 1 is clamped and the injection of the filler is started, and the expanded state is when the gelation of the filler has started. The state is set to expand chronologically according to the amount of time.
【００１７】本実施例においては、キャビテイ内に強化
材繊維が装填された上で型締めが行われた後に充填剤の
注入が行われると、袋状エラストマ３が膨張を開始する
。従って、成形型１は、図１における雄型１Ａが袋状エ
ラストマ３に封入されている熱媒体である水によって一
定温度に維持され、そして雌型１Ｂはキャビティ側の面
を加熱部材２により一定温度の維持されることになる。In this embodiment, when the filler is injected after reinforcing fibers are loaded into the cavity and the mold is clamped, the bag-like elastomer 3 starts to expand. Therefore, in the mold 1, the male mold 1A in FIG. The temperature will be maintained.
【００１８】一方、上述した各型における温度制御によ
って充填剤がゲル化すると、袋状エラストマ３が順次膨
張し、雌型１Ｂにおけるキャビティと対向する面に充填
剤を押しつけた状態を設定し、この状態をゲル化が進行
する間維持する。従って、反応硬化を開始した充填剤は
各型の温度調整によるゲル化の進行状態を制御されると
ともに、この状態で成形品の外表面側に相当する面を型
の面に対応した状態で転写されることになる。つまり、
温度制御によりゲル化の進行を制御されることで袋状エ
ラストマ３による押しつけを介して雌型１Ｂのキャビテ
ィ側の面に均一に当たることで転写しやすい状態を設定
され、しかも、転写された状態での面の状態を温度制御
による反応調整によって維持した状態で成形を終えるこ
とができる。On the other hand, when the filler gels due to the temperature control in each of the molds described above, the bag-like elastomer 3 expands one after another, setting the state in which the filler is pressed against the surface of the female mold 1B facing the cavity. This condition is maintained while gelation progresses. Therefore, the progress of gelation of the filler that has started reaction hardening is controlled by adjusting the temperature of each mold, and in this state, the surface corresponding to the outer surface of the molded product is transferred in a state corresponding to the surface of the mold. will be done. In other words,
By controlling the progress of gelation by controlling the temperature, a state is set in which it is easy to transfer by uniformly hitting the cavity side surface of the female mold 1B through the pressing by the bag-shaped elastomer 3, and moreover, in the transferred state. Molding can be completed with the state of the surface maintained through reaction adjustment through temperature control.
【００１９】[0019]
【発明の効果】以上のように、本発明によれば、成形品
の外表面に相当する側の型に熱媒体を膨張のための加圧
媒体として封入した袋状エラストマを用い、この加圧媒
体を上記型と対向する側の型における温度制御と合わせ
て制御するようにしたので、充填剤の反応調整を可能に
して、型に合わせて面の転写が行われた状態のままで成
形を終えることができるので、成形品の平面性を損なわ
ないで、意匠上の見栄えを低下させないで済む成形方法
を提供することができる。As described above, according to the present invention, a bag-shaped elastomer in which a heating medium is sealed as a pressurizing medium for expansion is used in the mold on the side corresponding to the outer surface of the molded product, and Since the temperature of the medium is controlled in conjunction with the temperature control in the mold on the opposite side of the mold, it is possible to adjust the reaction of the filler, and molding can be performed while the surface is transferred to match the mold. Therefore, it is possible to provide a molding method that does not impair the flatness of the molded product and does not reduce the design appearance.
【図１】本発明実施例による成形方法を実行するための
成形型を示す模型図である。FIG. 1 is a schematic diagram showing a mold for carrying out a molding method according to an embodiment of the present invention.
【図２】図１に示した成形型に用いられる循環路の構造
を説明するための一部を拡大した状態の模型図である。FIG. 2 is a partially enlarged model diagram for explaining the structure of a circulation path used in the mold shown in FIG. 1;
【図３】図１に示した成形型に用いられる循環路の変形
例を示す模型図である。3 is a schematic diagram showing a modification of the circulation path used in the mold shown in FIG. 1. FIG.
１ 成形型 １Ａ 雄型 １Ｂ 雌型 ２ 加熱部材 ３ 袋状エラストマ ４ 循環路 ５ 注入口 ８ ヒ−タ ９ 温度センサ 1 Molding mold 1A Male type 1B Female type 2 Heating member 3 Bag-shaped elastomer 4 Circulation route 5 Inlet 8 Heater 9 Temperature sensor
Claims (3)
ティ内に強化材繊維を装填し、このキャビテイ内に充填
剤として熱硬化性樹脂を注入して強化材繊維に充填剤を
含浸させて反応硬化により成形するＲＴＭ成形法におい
て、上記雄型と雌型のうち、成形品の外表面に相当する
側の型と反対側に位置する型における上記キャビティ側
の面に耐圧性および耐溶剤性の材質で構成された袋状の
エラストマを配置し、この袋状エラストマを膨張させる
ための加圧媒体として袋状エラストマ内と外部との間を
循環可能な熱媒体を用い、この熱媒体の温度を上記成形
品の外表面に相当する側の型における温度に応じた値に
設定して循環させるようにしたことを特徴とする成形方
法。Claim 1: Reinforcement fibers are loaded into the cavity of a mold consisting of a male mold and a female mold, and a thermosetting resin is injected as a filler into the cavity to inject the filler into the reinforcement fibers. In the RTM molding method, which involves impregnation and molding by reaction curing, pressure resistant and A bag-shaped elastomer made of a solvent-resistant material is arranged, and a heat medium that can be circulated between the inside and outside of the bag-shaped elastomer is used as a pressurizing medium to expand the bag-shaped elastomer. A molding method characterized in that the temperature of the medium is set to a value corresponding to the temperature in the mold on the side corresponding to the outer surface of the molded article and the medium is circulated.
ラストマの膨張時での大きさは、キャビティ内に注入さ
れた充填剤のゲル化が開始されたときにその充填剤が成
形品の外表面に相当する側の型の表面に押しつけられる
ことが可能な程度の大きさとされている成形方法。2. In the molding method according to claim 1, the size of the bag-shaped elastomer upon expansion is such that the size of the filler injected into the cavity is such that when the filler injected into the cavity starts to gel, A molding method in which the size is such that it can be pressed against the surface of the mold on the side corresponding to the outer surface.
の循環部の一部は、充填剤の注入口の周囲を囲繞した状
態で設けてある成形方法。3. The molding method according to claim 1, wherein a part of the heat medium circulation section is provided so as to surround the filler injection port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3111792A JP2576305B2 (en) | 1991-05-16 | 1991-05-16 | Molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3111792A JP2576305B2 (en) | 1991-05-16 | 1991-05-16 | Molding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04339608A true JPH04339608A (en) | 1992-11-26 |
| JP2576305B2 JP2576305B2 (en) | 1997-01-29 |
Family
ID=14570272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3111792A Expired - Lifetime JP2576305B2 (en) | 1991-05-16 | 1991-05-16 | Molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2576305B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7727448B2 (en) * | 2004-12-16 | 2010-06-01 | Snecma Propulsion Solide | Densification of fibrous structures by resin transfer moulding for making thick parts of composite material |
| WO2012114933A1 (en) * | 2011-02-24 | 2012-08-30 | 東レ株式会社 | Preform fabrication apparatus, fabrication method, and preform fabricated with same method |
| JP2014517779A (en) * | 2011-05-06 | 2014-07-24 | スネクマ | Injection molding method for composite material parts |
-
1991
- 1991-05-16 JP JP3111792A patent/JP2576305B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7727448B2 (en) * | 2004-12-16 | 2010-06-01 | Snecma Propulsion Solide | Densification of fibrous structures by resin transfer moulding for making thick parts of composite material |
| WO2012114933A1 (en) * | 2011-02-24 | 2012-08-30 | 東レ株式会社 | Preform fabrication apparatus, fabrication method, and preform fabricated with same method |
| JP2014517779A (en) * | 2011-05-06 | 2014-07-24 | スネクマ | Injection molding method for composite material parts |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2576305B2 (en) | 1997-01-29 |
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