JPH0237290B2 - - Google Patents
Info
- Publication number
- JPH0237290B2 JPH0237290B2 JP57021394A JP2139482A JPH0237290B2 JP H0237290 B2 JPH0237290 B2 JP H0237290B2 JP 57021394 A JP57021394 A JP 57021394A JP 2139482 A JP2139482 A JP 2139482A JP H0237290 B2 JPH0237290 B2 JP H0237290B2
- Authority
- JP
- Japan
- Prior art keywords
- thermosetting resin
- core material
- molded article
- producing
- resin layer
- 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 23
- 239000011347 resin Substances 0.000 claims description 23
- 229920001187 thermosetting polymer Polymers 0.000 claims description 22
- 239000011162 core material Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- -1 accelerator Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
本発明は熱硬化性樹脂成形物用芯材の製造方法
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a core material for a thermosetting resin molded article.
従来より熱硬化性樹脂成形物の厚肉部内に芯材
を挿入して成形物を製造することが行われてい
る。 BACKGROUND ART Conventionally, molded articles have been manufactured by inserting a core material into the thick portion of a thermosetting resin molded article.
しかしながら、芯材が成形用型中で発泡成形さ
れた合成樹脂成形物である場合には、型と接触す
る芯材表面に、比較的密度の高い表皮層が形成さ
れ、該表皮層と熱硬化性樹脂との接着強度が弱い
ため、剥離を生じ易く、表皮層に表面処理を行つ
て熱硬化性樹脂との接着強度を上げると、芯材の
表皮層と内層との間で剥離を生じるという欠点を
有していた。 However, when the core material is a synthetic resin molded product that is foam-molded in a mold, a relatively dense skin layer is formed on the surface of the core material that comes into contact with the mold, and this skin layer and thermosetting Because the adhesive strength with the thermosetting resin is weak, peeling is likely to occur, and if the outer skin layer is surface treated to increase the adhesive strength with the thermosetting resin, peeling will occur between the outer skin layer and the inner layer of the core material. It had drawbacks.
そこでこの欠点を除去するため、サンダー仕上
による表皮層の除去が行われているが、この場合
余分の工数を必要とする上、所定の形状が損われ
るという欠点を有していた。 In order to eliminate this defect, the skin layer has been removed by sanding, but this method requires extra man-hours and has the disadvantage that the predetermined shape is damaged.
本発明は上記従来の欠点を解消し、表皮層のな
い芯材を得ることを目的としてなされたものであ
る。 The present invention has been made with the aim of solving the above-mentioned conventional drawbacks and obtaining a core material without a skin layer.
次に本発明製造方法の一例を図面に基いて説明
する。 Next, an example of the manufacturing method of the present invention will be explained based on the drawings.
１，２は、閉合、開割できる成形用型であつ
て、開割された型窩内に、成形物の外形に合わせ
て予備成形されたガラス繊維、布等からなる中空
状の繊維質被覆材３が設置される。繊維質被覆材
３の内側表面には、硬化剤、促進剤、増粘剤等を
添加した不飽和ポリエステル樹脂を吹付塗布し
て、熱硬化性樹脂層３１が形成されている。次い
で、成形用型１，２を閉じ、前記熱硬化性樹脂層
３１が硬化を完了しない間に熱硬化性樹脂層に囲
まれた空間４に樹脂注入口（図示せず）より未発
泡の発泡性ウレタン樹脂５を注入し、約６倍に発
泡、賦形させる。 1 and 2 are molds for molding that can be closed and opened, and a hollow fibrous covering made of glass fiber, cloth, etc., preformed to match the outer shape of the molded product is placed in the opened mold cavity. Material 3 is installed. A thermosetting resin layer 31 is formed on the inner surface of the fibrous covering material 3 by spray coating an unsaturated polyester resin to which a curing agent, accelerator, thickener, etc. are added. Next, the molds 1 and 2 are closed, and while the thermosetting resin layer 31 has not completed curing, unfoamed foam is poured into the space 4 surrounded by the thermosetting resin layer from a resin injection port (not shown). Polyurethane resin 5 is injected, and the foam is expanded to about 6 times the size and shaped.
本発明方法によれば、成形用型の型窩内に、内
側表面に熱硬化性樹脂層を形成せしめた中空状繊
維質被覆材を設置し、前記熱硬化性樹脂層が硬化
を完了しない間に熱硬化性樹脂層に囲まれた空間
に、未発泡の発泡性樹脂成形材料を注入し、発
泡、賦形させているので、発泡成形された芯材の
ように表面に比較的密度の高い表皮層が形成され
ないので、これを熱硬化性樹脂成形物の厚肉部に
挿入される芯材として使用した場合、熱硬化性樹
脂との剥離を生じることがなく、又表皮層除去の
余分な工数を必要とせず、サンダー仕上により所
定形状を損うことがない。 According to the method of the present invention, a hollow fibrous covering material having a thermosetting resin layer formed on the inner surface is installed in the mold cavity of a mold, and while the thermosetting resin layer has not completed curing, An unfoamed foamable resin molding material is injected into the space surrounded by the thermosetting resin layer, and is foamed and shaped, so the surface has a relatively high density like a foam-molded core material. Since no skin layer is formed, when this material is used as a core material inserted into a thick part of a thermosetting resin molded product, it will not peel off from the thermosetting resin, and there will be no need to remove the extra skin layer. No man-hours are required, and the predetermined shape is not damaged by sanding.
又、本発明による芯材の全体が繊維質被覆材に
より構成されているので、図示例のように鰭状薄
肉部がある場合にも欠損することがない。 Further, since the core material according to the present invention is entirely composed of the fibrous covering material, even if there is a fin-like thin part as shown in the illustrated example, it will not be damaged.
図面は本発明方法を工程順に示すものであり、
第１図は、成形用型に繊維質被覆材を設置した状
態の縦断面図、第２図は、発泡性合成樹脂成型材
料を注入し、発泡賦形する状態の縦断面図であ
る。
１，２：成形用型、３：繊維質被覆材、４：空
間、５：発泡性ウレタン樹脂、３１：熱硬化性樹
脂層。
The drawings show the method of the present invention in the order of steps,
FIG. 1 is a longitudinal sectional view of a state in which a fibrous covering material is installed in a mold, and FIG. 2 is a longitudinal sectional view of a state in which a foamable synthetic resin molding material is injected and foamed. 1, 2: Molding mold, 3: Fibrous covering material, 4: Space, 5: Foaming urethane resin, 31: Thermosetting resin layer.
Claims (1)
脂層を形成せしめた中空状繊維質被覆材を設置
し、前記熱硬化性樹脂層が硬化を完了しない間
に、熱硬化性樹脂層に囲まれた空間に発泡性合成
樹脂材料を注入し、発泡させることを特徴とする
熱硬化性樹脂成形物用芯材の製造方法。 ２ 繊維質被覆材が成形物の外形に合わせて予備
成形されている特許請求の範囲第１項記載の熱硬
化性樹脂成形物用芯材の製造方法。 ３ 熱硬化性樹脂層が不飽和ポリエステル樹脂か
らなる特許請求の範囲第１項又は第２項に記載の
熱硬化性樹脂成形物用芯材の製造方法。 ４ 発泡性合成樹脂が発泡性ウレタン樹脂である
特許請求の範囲第１項乃至第３項のいずれか１項
に記載の熱硬化性樹脂成形物用芯材の製造方法。[Scope of Claims] 1. A hollow fibrous covering material having a thermosetting resin layer formed on the inner surface is installed in the cavity of a molding die, and while the thermosetting resin layer has not completed curing, A method for producing a core material for a thermosetting resin molded article, which comprises injecting a foamable synthetic resin material into a space surrounded by a thermosetting resin layer and foaming the material. 2. The method for producing a core material for a thermosetting resin molded article according to claim 1, wherein the fibrous covering material is preformed to match the outer shape of the molded article. 3. The method for producing a core material for a thermosetting resin molded article according to claim 1 or 2, wherein the thermosetting resin layer is made of an unsaturated polyester resin. 4. The method for producing a core material for a thermosetting resin molded article according to any one of claims 1 to 3, wherein the foamable synthetic resin is a foamable urethane resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57021394A JPS58138637A (en) | 1982-02-12 | 1982-02-12 | Manufacture of core material for thermocuring resin shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57021394A JPS58138637A (en) | 1982-02-12 | 1982-02-12 | Manufacture of core material for thermocuring resin shape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58138637A JPS58138637A (en) | 1983-08-17 |
| JPH0237290B2 true JPH0237290B2 (en) | 1990-08-23 |
Family
ID=12053841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57021394A Granted JPS58138637A (en) | 1982-02-12 | 1982-02-12 | Manufacture of core material for thermocuring resin shape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58138637A (en) |
-
1982
- 1982-02-12 JP JP57021394A patent/JPS58138637A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58138637A (en) | 1983-08-17 |
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