JPH033571B2 - - Google Patents
Info
- Publication number
- JPH033571B2 JPH033571B2 JP11335783A JP11335783A JPH033571B2 JP H033571 B2 JPH033571 B2 JP H033571B2 JP 11335783 A JP11335783 A JP 11335783A JP 11335783 A JP11335783 A JP 11335783A JP H033571 B2 JPH033571 B2 JP H033571B2
- Authority
- JP
- Japan
- Prior art keywords
- core material
- frp
- mold
- resin
- injection mold
- 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
Links
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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ポリスチレン、ポリエチレン、フエ
ノール樹脂、尿素樹脂、ポリウレタン、ポリプロ
ピレン等の樹脂の発泡体を芯材、もしくはこの発
泡体の表面をスチレン不浸透樹脂膜で被覆した芯
材と、ガラス繊維補樹脂（以下FRPと記す）よ
りなる複合成形体の製造方法にするものである。Detailed Description of the Invention [Field of Industrial Application] The present invention uses a foam made of a resin such as polystyrene, polyethylene, phenolic resin, urea resin, polyurethane, or polypropylene as a core material, or the surface of this foam is made of a styrene-free material. The present invention is a method for manufacturing a composite molded body consisting of a core material coated with a permeable resin film and glass fiber auxiliary resin (hereinafter referred to as FRP).
本発明の製造方法は、サーフインボード、保冷
コンテナー、浮具、漁槽、郵便コンテナー、薬品
槽、シヨーウインドーケースを製造するに適して
いる。 The manufacturing method of the present invention is suitable for manufacturing surf inboards, cold containers, floating equipment, fishing tanks, mail containers, chemical tanks, and show window cases.
ポリエチレン、ポリスチレン等の樹脂の発泡体
を芯材、またはこの発泡体の表面にスチレン不浸
透性樹脂膜を設けた芯材を用い、この芯材上にガ
ラス繊維製マツトを載せ、これを射出金型を用い
て1.2〜2.5Kg／cm2の型締圧力にてガラス繊維マツ
トおよび発泡体を圧縮し、発泡体、マツトが圧縮
されている間に、射出金型に芯材にかかる圧縮応
力の方向に設けられた注入口より金型内のキヤビ
テイ内に硬化性液状不飽和ポリエステル樹脂組成
物またはエポキシ樹脂組成物を加圧注入し、次い
で該組成物を硬化させてガラス繊維で強化された
樹脂を発泡体の表面に設けたFRP／発泡樹脂複
合成形体を製造する方法は知られている（特開昭
54−55088号、同54−15265号、同55−82612号、
同57−182426号、特願昭57−163773号）。
Using a core material made of a resin foam such as polyethylene or polystyrene, or a core material with a styrene-impermeable resin film on the surface of the foam, a glass fiber mat is placed on the core material, and this is then molded using injection molding. The glass fiber mat and foam are compressed using a mold with a mold clamping pressure of 1.2 to 2.5 Kg/ cm2 , and while the foam and mat are being compressed, the compression stress applied to the core material in the injection mold is A curable liquid unsaturated polyester resin composition or epoxy resin composition is injected under pressure into the cavity of the mold through an injection port provided in the direction, and then the composition is cured to produce a resin reinforced with glass fibers. There is a known method for manufacturing FRP/foamed resin composite molded bodies with
No. 54-55088, No. 54-15265, No. 55-82612,
No. 57-182426, Japanese Patent Application No. 163773/1983).
このFRP／発泡樹脂複合成形体は強度、耐薬
品性、断熱性、軽量性に優れるので保冷コンテナ
ー、浮具、薬品槽、シヨーウインドーケース、ボ
ート等に使用されている。 This FRP/foamed resin composite molded product has excellent strength, chemical resistance, heat insulation, and light weight, so it is used for cold containers, floating devices, chemical tanks, window cases, boats, etc.
この射出成形法は、FRP／発泡複合体をハン
ドレイアツプ法もしくはスプレーアツプ法で製造
する方法と比較して寸法精度、生産性、外観、品
質の均一性に優れ、かつ、FRPと発泡体の間に
木材、金属等の補強体やネジ、ナツト等をインサ
ートした製品もうることができる利点を有する。
このFRP／発泡複合成の形状が板状体である場
合は、FRP表皮の強度も全体として高く問題は
ないが、浮具、サーフインボードのようにラグビ
ーボール状、球状、卵状のものであるときは、第
１図に示すように芯材（仮想線で示す）が射出金
型１により圧縮された発泡体芯材２の変形が大き
く、芯材２は圧縮応力の方向に体し、垂直方向に
変形しやすいので、金型１の縁部３と、芯材２の
距離l0が型締時にl1と狭くなり、従つて、FRP／
発泡樹脂複合成形体のこの部分ＰのFRP被覆層
の肉厚は他の部分よりも薄いものとなり、強度が
弱いものとなる欠点がある。 This injection molding method is superior in dimensional accuracy, productivity, appearance, and quality uniformity compared to methods of manufacturing FRP/foam composites by hand lay-up or spray-up methods, and is superior in terms of uniformity in dimensional accuracy, productivity, appearance, and quality. It has the advantage that it can also produce products with reinforcing bodies such as wood or metal, screws, nuts, etc. inserted between them.
If the shape of this FRP/foam composite is a plate, the strength of the FRP skin is high overall and there is no problem, but if it is rugby ball-shaped, spherical, or egg-shaped like floating devices and surf inboards, In some cases, as shown in FIG. 1, the foam core material 2 whose core material (indicated by the imaginary line) is compressed by the injection mold 1 is greatly deformed, and the core material 2 is moved in the direction of the compressive stress. Since it is easy to deform in the vertical direction, the distance l 0 between the edge 3 of the mold 1 and the core material 2 becomes narrower to l 1 when the mold is clamped, and therefore the FRP/
The thickness of the FRP coating layer in this portion P of the foamed resin composite molded product is thinner than in other portions, which has the disadvantage of lower strength.
また、前述の方法では、液状樹脂の注入口６は
第１図に示すように芯材２を圧縮する方向に設け
られていたため、射出注入される液状樹脂が金型
１のキヤビテイ４内に均一にくまなくゆき届くた
めに金型にランナー（図示されていない）を設け
る必要があり、金型の設計が難しい。 Furthermore, in the method described above, since the injection port 6 for the liquid resin was provided in the direction that compresses the core material 2 as shown in FIG. It is necessary to provide a runner (not shown) in the mold in order to reach all the areas, making the design of the mold difficult.
本発明の第１目的は板状体である場合は勿論、
ラグビーボール状、球状、卵状のものでも射出金
型のパーテイングライン面に位置する芯材の部分
に少なくとも半周に亘つて切り込み部を設けるこ
とにより、芯材が圧縮方向に対し垂直方向に変形
するのを抑制し、射出金型のパーテイングライン
面に位置するFRP被覆層部分の肉厚を厚くして
他の部分と同等の厚さまたはそれもりも厚い肉厚
に改善し、本来強度の弱まる部分強くすることで
ある。
The first object of the present invention is, of course, when it is a plate-shaped body,
Even if it is rugby ball-shaped, spherical, or egg-shaped, the core material can be deformed in a direction perpendicular to the compression direction by providing a notch part that spans at least half the circumference in the part of the core material located on the parting line surface of the injection mold. In order to prevent The point is to strengthen the weakened parts.
第２目的は硬化性液状樹脂の注入口を、射出金
型により芯材にかかる圧縮応力の方向に対し略直
角に、しかも射出金型のパーテイングライン面に
設けることにより金型にランナーを設けなくても
射出注入される液状樹脂が金型のキヤビテイ内に
均一にくまなく行き届くようにすることである。 The second purpose is to provide a runner in the mold by providing an inlet for the curable liquid resin approximately perpendicular to the direction of the compressive stress applied to the core material by the injection mold, and on the parting line surface of the injection mold. The objective is to make sure that the liquid resin that is injected evenly and thoroughly reaches the inside of the mold cavity.
第３の目的は芯材の切り込み部におけるガラス
繊維補強材の全周をガラス繊維製ヤーンで結束す
ることによりガラス繊維補強材が金型のパーテイ
ングライン面より金型外へはみ出すのを防止する
ことである。 The third purpose is to prevent the glass fiber reinforcement from protruding beyond the parting line surface of the mold by binding the entire circumference of the glass fiber reinforcement at the notch of the core material with glass fiber yarn. That's true.
第４の目的はガラス繊維製ヤーンにより複合成
形体を、より強固にすることである。 The fourth purpose is to make the composite molded body stronger with the glass fiber yarn.
第５の目的は注入された硬化性液状樹脂を、ガ
ラス繊維製ヤーンを用いることによりこのヤーン
の空〓を伝わつて金型のキヤビテイ内全体に速く
行き届かせることである。 The fifth purpose is to quickly spread the injected curable liquid resin throughout the mold cavity by using glass fiber yarns.
〔発明の方法〕
本発明の第１方法は第１、第２の目的を達成
するため、FRP／発泡樹脂複合成形体を製造
する方法において、第２、第３図示のように硬
化性液状樹脂の注入口６は、射出金型１により
芯材２にかかる圧縮応力の方向に対し、略直角
に、しかも射出金型１のパーテイングライン面
に設けられ、芯材２は、それが射出金型１のパ
ーテイングライン面に位置する部分に、少なく
とも半周に、好ましくは全周に亘つて切り込み
部５が設けられている方法である。[Method of the Invention] In order to achieve the first and second objects, the first method of the present invention is a method for manufacturing an FRP/foamed resin composite molded article, in which a curable liquid resin is used as shown in the second and third figures. The injection port 6 is provided approximately perpendicularly to the direction of compressive stress applied to the core material 2 by the injection mold 1, and on the parting line surface of the injection mold 1. In this method, a cut portion 5 is provided in a portion of the mold 1 located on the parting line surface at least half the circumference, preferably over the entire circumference.
本発明の第２方法は第１方法において第４、
第５の目的も達成するため切り込み部５におけ
る繊補強材８の全周が繊維製ヤーン７で結束さ
れている方法である。 The second method of the present invention includes a fourth method in the first method,
In order to also achieve the fifth object, the entire circumference of the fiber reinforcing material 8 in the cut portion 5 is bound with fiber yarns 7.
本発明における芯材２としてはポリスチレン、
ポリエチレン、ポリスチレン・ポリエチレン共重
合体、フエノール樹脂、尿素樹脂、ポリウレタン
等の樹脂の発泡体（密度0.01〜0.3ｇ／cm3）、また
は、この表面を不飽和ポリエステル樹脂ゲルコー
ト；ポリ塩化ビニル、アクリル系樹脂、ポリ酢酸
ビニル等のラテツクスでコートしたものを用いる
ことができる。 The core material 2 in the present invention is polystyrene,
Polyethylene, polystyrene/polyethylene copolymer, phenolic resin, urea resin, polyurethane foam (density 0.01 to 0.3 g/cm 3 ), or the surface is coated with an unsaturated polyester resin gel coat; polyvinyl chloride, acrylic Those coated with latex such as resin or polyvinyl acetate can be used.
硬化性液状樹脂としては不飽和ポリエステル樹
脂、エポキシ樹脂、ビニル樹脂（エポキシアクリ
レート樹脂）、ポリウレタン樹脂等が用いられる。 As the curable liquid resin, unsaturated polyester resin, epoxy resin, vinyl resin (epoxy acrylate resin), polyurethane resin, etc. are used.
また、繊維補強材としてはガラス繊維、カーボ
ンフアイバー、ポリエステル繊維、ナイロン繊維
等が挙げられる。これらの中でもガラス繊維が安
価である。かかるガラス繊維補強材としてはマツ
ト、ストランド、ロービング状のものを用いるこ
とができる。 Furthermore, examples of the fiber reinforcing material include glass fiber, carbon fiber, polyester fiber, and nylon fiber. Among these, glass fiber is inexpensive. Such glass fiber reinforcing material may be in the form of a pine, strand, or roving.
更に、繊維性ヤーンとしては、上記繊維補強材
の材料のストランドを紐状に編んだものがあげら
れる。一般にヤーンの径は１〜５mmのものが使用
される。このヤーンは空〓を有するので、注入さ
れた樹脂がかかる空〓を伝わつて金型キヤビテイ
内に迅速に行き届く。 Furthermore, examples of the fibrous yarn include those obtained by knitting strands of the above-mentioned fiber reinforcing material into a string shape. Generally, yarns with a diameter of 1 to 5 mm are used. Since the yarn has voids, the injected resin can quickly reach the mold cavity through the voids.
次に本発明の一実施例について第２、第３図を
参照しながら説明する。
Next, an embodiment of the present invention will be described with reference to FIGS. 2 and 3.
スチレン（105部）・ポリエチレン（100部）共
重合体の発泡性粒子“エレンポール”（油化バー
デイツシエ(株)製商品名）を104℃のスチームで約
20倍予備発泡させて予備発泡ビーズを得た。
Expandable particles of styrene (105 parts) and polyethylene (100 parts) copolymer "Elenpol" (trade name manufactured by Yuka Verdice Co., Ltd.) were heated with steam at 104℃ to approx.
Pre-expanded beads were obtained by pre-expanding 20 times.
このビースをスチーム導入スリツトを有する金
型のキヤビテイ内に導き、114℃のスチームを導
き、次いで冷却して、密度が0.05ｇ／cm3、縦300
mm、横750mm、高さ300mmのラグビーボール状の発
泡体を得た。 This bead is introduced into the cavity of a mold having a steam introduction slit, steam at 114°C is introduced, and then cooled to a density of 0.05g/cm 3 and a length of 300°C.
A rugby ball-shaped foam with a width of 750 mm and a height of 300 mm was obtained.
このラグビーボール状の発泡体の中央部分に、
Ｖ型の切り込み部５（溝）（開口巾ｔ＝15mm、切
込角度60度）を全周に亘つて設け、この発泡体の
全面に、日本ユピカー(株)製常温硬化性不飽和ポリ
エステル樹脂組成物“ユカラツク38−06”（商品
名）をロールを用いて膜厚が40ミクロンとなるよ
うに塗布し、室温で硬化させて発泡体の表面にス
チレン不浸透性樹脂膜を形成させた。 In the center of this rugby ball-shaped foam,
A V-shaped notch 5 (groove) (opening width t = 15 mm, cutting angle 60 degrees) is provided around the entire circumference, and the entire surface of this foam is coated with room-temperature curing unsaturated polyester resin manufactured by Nippon Upicar Co., Ltd. The composition "Yukaratsuku 38-06" (trade name) was applied using a roll to a film thickness of 40 microns, and cured at room temperature to form a styrene-impermeable resin film on the surface of the foam.
上記スチレン不浸透性樹脂膜を有する発泡体
（芯材２）の全表面に、重量450ｇ／m2、旭フアイ
バーグラス(株)製ガラス繊維製コンテイニユアスス
トランドマツト”グラスロンM8600−450”（商品
名）を２重に重ね合せてまき、次いで、この芯材
２の切り込み部５におけるガラス繊維補強材８の
全周に直径約３mmのガラス繊維製ヤーン７を２度
囲繞し、結束した。これを40℃の型温に調整した
上下方向に移動する一対の型１ａ，１ｂよりなる
射出金型１の離型剤を塗布したキヤビテイ４内に
挿入した。（第２図）
次いで、金型１を閉じて１，８Kg／cm3の型締圧
力でガラス繊維製マツト（ガラス繊維補強剤）８
および芯材２を圧縮した（該型締圧力で芯材２の
肉厚は約２mm減ずる）。金型１を該型締圧力で閉
じる過程で、次の組成よりなる常温硬化性不飽和
ポリエステル樹脂組成物（硬化性液状樹脂）を、
注入圧力2.5Kg／cm3で金型１のパーテイングライ
ン面に設けた注入口６に挿入したノズル９より射
出金型１のキヤビテイ４内に注入し、40℃で30分
間硬化させた。 On the entire surface of the foam (core material 2) having the above-mentioned styrene-impermeable resin film, a glass fiber continuous strand mat "Glaslon M8600-450" manufactured by Asahi Fiberglass Co., Ltd., with a weight of 450 g/m 2 (product Then, glass fiber yarns 7 having a diameter of about 3 mm were wrapped twice around the entire circumference of the glass fiber reinforcing material 8 in the cut portion 5 of the core material 2 and tied together. This was inserted into a cavity 4 coated with a mold release agent of an injection mold 1 consisting of a pair of vertically moving molds 1a and 1b whose mold temperature was adjusted to 40°C. (Fig. 2) Next, the mold 1 is closed and a glass fiber mat (glass fiber reinforcement) 8 is molded with a mold clamping pressure of 1.8 kg/cm 3 .
And the core material 2 was compressed (the wall thickness of the core material 2 was reduced by about 2 mm due to the mold clamping pressure). In the process of closing the mold 1 with the mold clamping pressure, a room temperature curable unsaturated polyester resin composition (curable liquid resin) consisting of the following composition,
The mixture was injected into the cavity 4 of the injection mold 1 through the nozzle 9 inserted into the injection port 6 provided on the parting line surface of the mold 1 at an injection pressure of 2.5 Kg/cm 3 and cured at 40° C. for 30 minutes.
＜常温硬化性不飽和ポリエステル樹脂組成物＞
(A) 無水フタル酸・フマル酸・プロピレングリコ
ール系不飽和アルキツド 60部
(B) スチレン 40部
(C) メチルエチルケトンパーオキサイド 0.9部
(D) ６％アフテン酸コバルト溶液 0.3部
(E) 青色顔料 ３部
硬化後、型を開いてFRP／発泡樹脂複合体
（浮具）を得た。このものの寸法は、縦約302mm、
横約752、高さ約302mmであり、FRP層の平均厚
みは、約２mmであつた。また、パーテイングライ
ン面に位置しているFRP層の厚みは約６mmであ
つた。更に、FRP層中のガラス繊維含有量は30
％であつた。<Room temperature curable unsaturated polyester resin composition> (A) Phthalic anhydride/fumaric acid/propylene glycol unsaturated alkyd 60 parts (B) Styrene 40 parts (C) Methyl ethyl ketone peroxide 0.9 parts (D) 6% aphthenic acid Cobalt solution 0.3 parts (E) Blue pigment 3 parts After curing, the mold was opened to obtain an FRP/foamed resin composite (floating device). The dimensions of this item are approximately 302mm in height.
The width was about 752 mm, the height was about 302 mm, and the average thickness of the FRP layer was about 2 mm. Further, the thickness of the FRP layer located on the parting line surface was approximately 6 mm. Furthermore, the glass fiber content in the FRP layer is 30
It was %.
この複合成形体（浮具）は、発泡体の膨潤、収
縮がなく、発泡体とFRP層の接着も実用上問題
がない強度であつた。 In this composite molded article (floating device), there was no swelling or shrinkage of the foam, and the adhesion between the foam and the FRP layer was strong enough to cause no practical problems.
そして、この複合体のFRP表面の光沢は優れ、
ガラス繊維の浮き上りは全く見受けられなかつ
た。 The FRP surface of this composite has excellent gloss,
No lifting of glass fibers was observed at all.
以上の説明より明らかなように本発明の第１方
法によれば、射出金型１のパーテイングライン
面に位置する芯材２の部分に、少なくとも半周、
好ましくは全周に亘つて切り込み部５を設けたの
で、金型１により芯材２を圧縮した際、芯材２が
圧縮応力の方向に対し、垂直方向にその切り込み
部５による圧縮応力の吸収作用で変形し難くなる
から、パーテイングライン面に位置するFRP被
覆層部分の肉厚が他の部分と同等の厚さになり、
強度の向上を図ることができる。また硬化性液
樹脂の注入口６を、射出金型１により芯材２にか
かる圧縮応力の方向に対し略直角に、しかも金型
１のパーテイングライン面に設けたので、金型１
にランナーを設けなくても射出注入される液状樹
脂が金型１のキヤビテイ４内に均一にくまなく行
き届き、品質の均一性に優れた製品を得ることが
でき、かつランナーが不用になるため金型の設計
が容易になる。
As is clear from the above description, according to the first method of the present invention, at least half the circumference of the core material 2 is placed on the parting line surface of the injection mold 1.
Preferably, the notches 5 are provided around the entire circumference, so that when the core material 2 is compressed by the mold 1, the core material 2 absorbs the compressive stress by the notches 5 in a direction perpendicular to the direction of the compressive stress. Because it becomes difficult to deform due to the action, the thickness of the FRP coating layer located on the parting line surface becomes the same as other parts,
Strength can be improved. In addition, since the injection port 6 for the curable liquid resin was provided approximately perpendicular to the direction of the compressive stress applied to the core material 2 by the injection mold 1 and on the parting line surface of the mold 1, the mold 1
The injected liquid resin can be uniformly distributed throughout the cavity 4 of the mold 1 without providing a runner, making it possible to obtain products with excellent uniformity of quality. Mold design becomes easier.
本発明の第２方法を用いれば、上記第１方法を
採用したときに奏する、の効果以外に次の効
果を奏する。 If the second method of the present invention is used, the following effects are achieved in addition to the effects obtained when the first method is employed.
即ち、芯材の切り込み部５におけるガラス繊
維補強材８の全周をガラス繊維ヤーン７により結
束したので、ガラス繊維補強材が金型１のパーテ
イングライン面より金型１外へはみ出すことがな
い。ガラス繊維製ヤーン７により複合成形体
を、より補強することができる。注入された硬
化性液状樹脂を、ガラス繊維製ヤーン７を用いる
ことによりこのヤーン７を伝わつて金型１のキヤ
ビテイ４内全体に速く行き届かせることができ、
生産性を高めることができる。 That is, since the entire circumference of the glass fiber reinforcing material 8 in the cut portion 5 of the core material is bound with the glass fiber yarn 7, the glass fiber reinforcing material does not protrude outside the mold 1 from the parting line surface of the mold 1. . The composite molded body can be further reinforced by the glass fiber yarns 7. By using the glass fiber yarns 7, the injected curable liquid resin can be quickly spread throughout the cavity 4 of the mold 1 through the yarns 7.
Productivity can be increased.
第１図は従来方法を用いて成形している場合の
断面図、第２図は本発明方法を用いて成形してい
る途中の状態を示す断面図、第３図は同じくその
成形終了時の状態を示す断面図である。
１……射出金型、２……芯材、３……金型１の
縁部、４……金型１のキヤビテイ、５……切り込
み部、６……硬化性液状樹脂の注入口、７……ガ
ラス繊維製ヤーン、８……ガラス繊維マツト（ガ
ラス繊維補強材）、９……ノズル。
Figure 1 is a cross-sectional view of the molding process using the conventional method, Figure 2 is a cross-sectional view of the molding process using the method of the present invention, and Figure 3 is the same at the end of the molding process. It is a sectional view showing a state. DESCRIPTION OF SYMBOLS 1... Injection mold, 2... Core material, 3... Edge of mold 1, 4... Cavity of mold 1, 5... Notch, 6... Curable liquid resin injection port, 7 ...Glass fiber yarn, 8...Glass fiber mat (glass fiber reinforcement), 9...Nozzle.
Claims (1)
または該発泡体の表面がスチレン不浸透性樹脂膜
で被覆されている芯材上に繊維補強材を載せ、こ
れを一対の射出金型を用いて前記繊維補強材およ
び芯材を圧縮し、この両者が圧縮されている間に
射出金型に設けられた注入口より金型内のキヤビ
テイ内に硬化性液状樹脂を注入し、ついで該硬化
性液状樹脂を硬化させてFRP／発泡樹脂複合成
形体を製造する方法において、前記硬化性液状樹
脂の注入口は、射出金型により前記樹脂発泡体製
芯材にかかる圧縮応力の方向に対し、略直角に、
しかも、射出金型のパーテイングライン面に設け
られ、前記樹脂発泡体製芯材は、それが射出金型
のパーテイングライン面に位置する部分に、少な
くとも半周に亘つて切り込み部が設けられている
ことを特徴とするFRP／発泡樹脂複合成形体の
製造方法。 ２ 芯材の切り込み部は芯材の全周に亘つて設け
られていることを特徴とする特許請求の範囲第１
項記載のFRP／発泡樹脂複合成形体の製造方法。 ３ 繊維補強材がガラス繊維マツトであることを
特徴とする特許請求の範囲第１項記載のFRP／
発泡樹脂複合成形体の製造方法。 ４ 密度が0.01〜0.3ｇ／cm3の樹脂発泡体製芯材
または該発泡体の表面がスチレン不浸透性樹脂膜
で被覆されている芯材上に繊維補強材を載せ、こ
れを一対の射出金型を用いて前記繊維補強材およ
び芯材を圧縮し、この両者が圧縮されている間に
射出金型に設けられた注入口より金型内のキヤビ
テイ内に硬化性液状樹脂を注入し、ついで該硬化
性液状樹脂を硬化させてFRP／発泡樹脂複合成
形体を製造する方法において、前記硬化性液状樹
脂の注入口は、射出金型により前記樹脂発泡体製
芯材にかかる圧縮応力の方向に対し、略直角に、
しかも、射出金型のパーテイングライン面に設け
られ、前記樹脂発泡体製芯材は、それが射出金型
のパーテイングライン面に位置する部分に、少な
くとも半周に亘つて切り込み部が設けられている
と共に、この芯材の切り込み部における繊維補強
材の全周が繊維製ヤーンで結束されていることを
特徴とするFRP／発泡樹脂複合成形体の製造方
法。 ５ 繊維補強材がガラス繊維マツトであることを
特徴とする特許請求の範囲第４項記載のFRP／
発泡樹脂複合成形体の製造方法。 ６ 繊維製ヤーンがガラス繊維製ヤーンであるこ
とを特徴とする特許請求の範囲第４項記載の
FRP／発泡樹脂複合成形体の製造方法。[Claims] 1. A fiber reinforcing material is placed on a core material made of a resin foam having a density of 0.01 to 0.3 g/cm 3 or a core material whose surface is coated with a styrene-impermeable resin film. The fiber reinforcing material and core material are compressed using a pair of injection molds, and while both are being compressed, a hardening material is injected into the cavity of the mold through an injection port provided in the injection mold. In a method for producing an FRP/foamed resin composite molded article by injecting a liquid resin and then curing the curable liquid resin, the injection port for the curable liquid resin is inserted into the resin foam core material by an injection mold. substantially perpendicular to the direction of the compressive stress applied to
Moreover, the core material made of resin foam is provided on the parting line surface of the injection mold, and a cut portion is provided over at least half the circumference of the resin foam core material in the part where it is located on the parting line surface of the injection mold. A method for producing an FRP/foamed resin composite molded article. 2. Claim 1, characterized in that the cut portion of the core material is provided over the entire circumference of the core material.
A method for producing an FRP/foamed resin composite molded article as described in . 3. The FRP/FRP according to claim 1, wherein the fiber reinforcing material is glass fiber mat.
A method for producing a foamed resin composite molded article. 4 A fiber reinforcing material is placed on a core material made of resin foam with a density of 0.01 to 0.3 g/cm 3 or a core material whose surface is coated with a styrene-impermeable resin film, and this is Compressing the fiber reinforcing material and core material using a mold, and injecting a curable liquid resin into the cavity in the mold from an injection port provided in the injection mold while both are being compressed, In the method of manufacturing an FRP/foamed resin composite molded article by subsequently curing the curable liquid resin, the injection port for the curable liquid resin is directed in the direction of the compressive stress applied to the resin foam core material by the injection mold. Almost perpendicular to,
Moreover, the core material made of resin foam is provided on the parting line surface of the injection mold, and a cut portion is provided over at least half the circumference of the resin foam core material in the part where it is located on the parting line surface of the injection mold. A method for producing an FRP/foamed resin composite molded article, characterized in that the entire circumference of the fiber reinforcing material in the cut portion of the core material is bound with fiber yarn. 5. The FRP/FRP according to claim 4, wherein the fiber reinforcing material is glass fiber mat.
A method for producing a foamed resin composite molded article. 6. The method according to claim 4, wherein the fiber yarn is a glass fiber yarn.
A method for manufacturing FRP/foamed resin composite moldings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11335783A JPS604013A (en) | 1983-06-22 | 1983-06-22 | Preparation of frp/foamed resin composite molded substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11335783A JPS604013A (en) | 1983-06-22 | 1983-06-22 | Preparation of frp/foamed resin composite molded substance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS604013A JPS604013A (en) | 1985-01-10 |
| JPH033571B2 true JPH033571B2 (en) | 1991-01-18 |
Family
ID=14610223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11335783A Granted JPS604013A (en) | 1983-06-22 | 1983-06-22 | Preparation of frp/foamed resin composite molded substance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS604013A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1102101C (en) * | 1998-06-10 | 2003-02-26 | 于耀庆 | Method for shaping composition products and its mechanized production equipment |
| GB2365378A (en) * | 2000-08-02 | 2002-02-20 | Polymer Engineering Ltd | A method of making a composite panel |
| JP4670532B2 (en) * | 2005-08-03 | 2011-04-13 | 東レ株式会社 | Composite molded product |
-
1983
- 1983-06-22 JP JP11335783A patent/JPS604013A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS604013A (en) | 1985-01-10 |
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