JPH036890B2 - - Google Patents
Info
- Publication number
- JPH036890B2 JPH036890B2 JP58053228A JP5322883A JPH036890B2 JP H036890 B2 JPH036890 B2 JP H036890B2 JP 58053228 A JP58053228 A JP 58053228A JP 5322883 A JP5322883 A JP 5322883A JP H036890 B2 JPH036890 B2 JP H036890B2
- Authority
- JP
- Japan
- Prior art keywords
- skin
- rim
- mold
- core material
- composite 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
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
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/24—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 characterised by the choice of material
- B29C67/246—Moulding high reactive monomers or prepolymers, e.g. by reaction injection moulding [RIM], liquid injection moulding [LIM]
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/78—Moulding material on one side only of the preformed part
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は表皮と芯材を直接一体化せしめた複合
成形体の製造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a composite molded article in which a skin and a core are directly integrated.
一般に自動車のインストルメントパネル等は芯
材と表皮の複合成形体により構成されている。従
来このような複合成形体は例えば射出成形により
得られた芯材と熱成形により得られた表皮を接着
により貼り合せていたが、この方法では少なくと
も芯材用と表皮用の２つの金型が必要な上に、そ
の両者の接着工程に多大の手間と時間を要した。 Automobile instrument panels and the like are generally constructed from a composite molded body consisting of a core material and a skin. Conventionally, such composite molded bodies have been made by bonding together a core material obtained by injection molding and a skin material obtained by thermoforming, but this method requires at least two molds, one for the core material and one for the skin. Not only was this necessary, but the process of adhering the two required a great deal of effort and time.
この点を改良するものとして例えば熱可塑性樹
脂シートを熱成形して得られた表皮を型にセツト
して次いで芯材用原料を射出成形する方法があ
る。しかしながらこの方法では接着工程は不要と
なるが、熱成形と射出成形の２つの金型が必要で
あり、更に前処理として表皮表面の離型剤を除去
したり、射出金型に合わせて表皮をカツトした
り、その後に表皮を射出成形金型にセツトしたり
する手間が煩雑である。 To improve this point, for example, there is a method in which a skin obtained by thermoforming a thermoplastic resin sheet is set in a mold, and then a raw material for the core material is injection molded. However, although this method does not require an adhesion process, it does require two molds, one for thermoforming and one for injection molding, and it also requires pre-treatment to remove the release agent on the surface of the skin, and mold the skin to match the injection mold. Cutting and then setting the skin in an injection mold are cumbersome.
また他の方法として特開昭48−40888及び特開
昭57−61532に記載された真空成形表皮の内側へ
ポリウレタンフオーム用液を混合注入して発泡さ
せるものがあるが、この場合にはフオーム層は充
分な強度がなく、表皮にある程度の強度をもたせ
るかあるいは芯材を使用して強強する必要があ
る。 Other methods include foaming by mixing and injecting a polyurethane foam liquid into the inside of a vacuum-formed skin, as described in JP-A-48-40888 and JP-A-57-61532. does not have sufficient strength, so it is necessary to give the skin a certain degree of strength or use a core material to strengthen it.
本発明の目的は少なくとも１つの金型により表
皮と芯材とを直接一体化せしめることの可能な複
合成形体の製造法を提供することにある。 An object of the present invention is to provide a method for manufacturing a composite molded article that allows direct integration of a skin and a core material using at least one mold.
また本発明の目的は何ら接着工程を必要としな
い複合成形体の製造法を提供することにある。 Another object of the present invention is to provide a method for producing a composite molded article that does not require any bonding process.
また本発明の目的は離型剤を除去したり、芯材
を金型にセツトする工程を必要としない複合成形
体の製造法を提供することにある。 Another object of the present invention is to provide a method for producing a composite molded article that does not require the steps of removing a mold release agent or setting a core material in a mold.
更に本発明の目的は別途芯材等を使用すること
なく充分に優れた強度を有する複合成形体の製造
法を提供することにある。 A further object of the present invention is to provide a method for producing a composite molded article having sufficiently excellent strength without using a separate core material or the like.
本発明は真空引き用の穴を有する雌型を用いて
熱可塑性樹脂シートを熱成形して表皮を作成し、
次にこの表皮を該雌型にセツトしたまま蓋により
密閉状としたのち、芯材用合成樹脂材料を反応射
出成形により注入硬化させることにより、全工程
を通じて１つの型により、表皮と芯材を直接一体
化させることを特徴とする複合成形体の製造法に
係る。 The present invention creates a skin by thermoforming a thermoplastic resin sheet using a female mold having holes for vacuuming,
Next, this skin is set in the female mold and sealed with a lid, and then the synthetic resin material for the core material is injected and hardened by reaction injection molding, so that the skin and core material are molded in one mold throughout the entire process. The present invention relates to a method for producing a composite molded body characterized by direct integration.
本発明の方法においては何ら芯材を別途準備す
る必要性がなく、従つて芯材用の金型が不要で、
成形方法が簡単であり、成形時間が短かく、しか
も熱成形、反応射出成形共に低圧成形のため金型
費が安価であり、またアンダーカツト部に関係な
く製品を作成できるという種々の長所を有する。 In the method of the present invention, there is no need to separately prepare a core material, and therefore a mold for the core material is not required.
It has various advantages: the molding method is simple, the molding time is short, the mold cost is low because both thermoforming and reaction injection molding are low-pressure molding, and the product can be manufactured regardless of the undercut part. .
本発明では熱可塑性樹脂シートを真空成形、圧
空成形等により熱成形して表皮を作成する。熱可
塑性合成樹脂としては各種のものを使用でき、例
えばポリエチレン、ポリプロピレン、ポリスチレ
ン、ポリエチレンテレフタレート、ABS樹脂、
AN樹脂、PVC、ナイロン、エチレン−酢酸ビニ
ル樹脂、ポリカーボネート、変性ノリル樹脂等を
挙げることができ、これらは通常厚さが約0.05〜
10mm、好ましくは約0.5〜６mmのシート状のもの
が使用される。また表皮の厚さは目的とする製品
に応じて任意に選択できるが、通常は約0.5〜10
mm、好ましくは約１〜５mmが良い。 In the present invention, a skin is created by thermoforming a thermoplastic resin sheet by vacuum forming, pressure forming, or the like. Various thermoplastic synthetic resins can be used, such as polyethylene, polypropylene, polystyrene, polyethylene terephthalate, ABS resin,
AN resin, PVC, nylon, ethylene-vinyl acetate resin, polycarbonate, modified noryl resin, etc. can be mentioned, and these usually have a thickness of about 0.05~
A sheet of 10 mm, preferably about 0.5 to 6 mm, is used. The thickness of the epidermis can be selected arbitrarily depending on the desired product, but it is usually about 0.5 to 10
mm, preferably about 1 to 5 mm.
本発明において表皮を作成するときの型として
は通常、真空成形や圧空成形等の熱成形において
用いられるアルミ型、鉄型、耐熱樹脂型等の型を
使用できる。 In the present invention, as a mold for forming the skin, a mold such as an aluminum mold, an iron mold, or a heat-resistant resin mold, which is normally used in thermoforming such as vacuum molding or pressure forming, can be used.
本発明では上記表皮を形成した熱成形の型に、
芯材用合成樹脂材料を反応射出成形（RIM）に
より注入硬化させることにより、全工程を通じて
１つの型により目的とする表皮と芯材を直接一体
化せしめた複合成形体を得ることができる。 In the present invention, in the thermoforming mold in which the skin is formed,
By injecting and curing the synthetic resin material for the core material using reaction injection molding (RIM), it is possible to obtain the desired composite molded product in which the skin and core material are directly integrated using one mold throughout the entire process.
上記RIMとしては用いる樹脂に応じて、ポリ
ウレタンRIM、ナイロンRIM、エポキシRIM、
フエノール樹脂RIM等、更にガラス繊維、充填
剤等で強化したReinforced RIM（Ｒ−RIM）、ま
た発泡RIM等を採用することができる。 Depending on the resin used, the above RIM may include polyurethane RIM, nylon RIM, epoxy RIM,
Phenol resin RIM, etc., reinforced RIM (R-RIM) reinforced with glass fiber, filler, etc., foamed RIM, etc. can be used.
上記ポリウレタンRIM等の各種のRIMは公知
のRIMを用いることができ、例えばナイロン
RIMでは特開昭51−18797、同51−48628、特公
昭54−40120等に記載のものを使用できる。また
ポリオールとイソシアネートからなるポリウレタ
ンRIMにおいてはイソシアネートIndexは通常約
0.90〜1.25、好ましくは約1.00〜1.15とするのが
良い。Ｒ−RIMにおいて強化材として用いられ
るガラス繊維としては例えば径が通常約１〜
100μ、好ましくは約１〜20μで、長さが約0.01〜
10mm、好ましくは約50〜500μのものを、40重量
％以下配合するのが好ましい。またＲ−RIMに
用いられる充填剤としては例えば炭酸カルシウ
ム、カオリン、アスベスト、カーボンブラツク、
木粉、水酸化アルミニウム、水酸化マグネシウ
ム、シリカ、クレー、ワラストナイト、マイカ、
カーボン繊維、珪藻土等を挙げることができ、こ
れらは通常約0.01μ〜10mm、好ましくは約0.01〜
500μのサイズのものが好適である。 Various RIMs such as the above-mentioned polyurethane RIM can be used as known RIMs, such as nylon
For RIM, those described in JP-A-51-18797, JP-A-51-48628, JP-A-54-40120, etc. can be used. In addition, in polyurethane RIM consisting of polyol and isocyanate, the isocyanate index is usually approximately
It is good to set it to 0.90-1.25, preferably about 1.00-1.15. For example, the glass fiber used as a reinforcing material in R-RIM usually has a diameter of about 1 to 1.
100μ, preferably about 1 to 20μ, with a length of about 0.01 to
It is preferable to incorporate 40% by weight or less of 10mm, preferably about 50 to 500μ. Fillers used in R-RIM include, for example, calcium carbonate, kaolin, asbestos, carbon black,
Wood flour, aluminum hydroxide, magnesium hydroxide, silica, clay, wollastonite, mica,
Carbon fiber, diatomaceous earth, etc. can be mentioned, and these usually have a thickness of about 0.01 μ to 10 mm, preferably about 0.01 μ to 10 mm.
A size of 500μ is suitable.
本発明においてRIMにより注入硬化されて得
られる上記芯材の曲げモジユラスはJIS K7203
（スパン管距離80mm）により測定した値が通常約
5000Kg／cm2以上、好ましくは約7000〜50000Kg／
cm2の範囲が好適である。RIM芯材の比重は硬質
RIMの場合には約0.3〜1.15、好ましくは約0.5〜
1.1の範囲、Ｒ−RIMの場合には約0.3〜2.0、好ま
しくは約0.8〜2.0の範囲が良い。 In the present invention, the bending modulus of the core material obtained by injection hardening with RIM is JIS K7203.
(Span pipe distance 80mm) The value measured by
5000Kg/cm2 or more , preferably about 7000-50000Kg/
A range of cm 2 is preferred. The specific gravity of RIM core material is hard.
About 0.3 to 1.15 for RIM, preferably about 0.5 to
A good range is 1.1, and in the case of R-RIM, about 0.3 to 2.0, preferably about 0.8 to 2.0.
発泡RIMの発泡方法としては例えば発泡剤と
して水を使用して炭酸ガスを発生させる方法、空
気を巻き込む方法、その他発泡剤を用いる方法等
を使用できる。 As a foaming method for the foamed RIM, for example, a method of generating carbon dioxide gas using water as a foaming agent, a method of involving air, a method of using other foaming agents, etc. can be used.
本発明の複合成形体は例えば自動車用としてイ
ンストルメントパネル、ヘツドレスト、ホーンパ
ツド、センターピラー、ドアトリム、ガーニツシ
ユ等に、また一般用として例えば家具部品、家電
製品、壁材等に使用できる。また難燃の規格をパ
スする必要がある場合には、PVC、難燃剤を含
む表皮及び芯材を使用するのが好適である。 The composite molded article of the present invention can be used, for example, for automobiles, such as instrument panels, head rests, horn pads, center pillars, door trims, garnishes, etc., and for general purposes, such as furniture parts, home appliances, wall materials, etc. In addition, if it is necessary to pass flame retardant standards, it is preferable to use PVC and a skin and core material containing flame retardants.
以下に実施例を挙げて詳しく説明する。単に部
とあるは重量部を示す。 A detailed explanation will be given below with reference to examples. Parts simply indicate parts by weight.
実施例 １
ホーンパツドの形状の真空孔を有する金型（電
鋳製、大きさ約120×120×70Hmm、雌型）を使用
して真空成形法により、発泡塩ビシート（ロンシ
ール製、ロンライトスーパー、発泡層２mm、スキ
ン層0.7mm、総厚み2.7mm）を155±５℃に加熱後、
直ちに真空に引きホーンパツド金型形状の発泡塩
ビシートを作成した。Example 1 A foamed PVC sheet (manufactured by Ronseal, Ronlite) was fabricated by vacuum forming using a mold (made by electroforming, size approximately 120×120×70 H mm, female mold) having vacuum holes in the shape of a horn pad. After heating the super, foam layer 2mm, skin layer 0.7mm, total thickness 2.7mm) to 155±5℃,
A vacuum was immediately applied to create a foamed PVC sheet in the shape of a horn pad mold.
次に上記発泡塩ビシートをホーンパツド金型内
にセツトしたままで、以下に示すＲ−RIM配合
のポリオール成分とイソシアネート成分をクラウ
スマツフアイのRIM成形機（PU80／40、液温ポ
リオール側60℃、イソシアネート側30℃、吐出圧
130±10Kg／cm2、吐出速度1300ｇ／sec）にて注入
（600〜610ｇ）し、60秒後に取出し、外部に発泡
塩ビ表皮によるクツシヨンを持ち、且つ内部にＲ
−RIM芯材を有する構造の複合成形体を得た。 Next, while the above foamed PVC sheet was still set in the horn pad mold, the polyol component and isocyanate component of the R-RIM compound shown below were added to a KraussMassaffei RIM molding machine (PU80/40, liquid temperature polyol side 60℃, Isocyanate side 30℃, discharge pressure
Inject (600 to 610 g) at a rate of 130±10 Kg/cm 2 and a discharge rate of 1300 g/sec, and take it out after 60 seconds.
- A composite molded body having a structure having a RIM core material was obtained.
ポリオール配合
ポリマーポリオール（三井日曹、POP31−28、
OH価28.5） 76部
ポリマーポリオール（三井日曹、XOR−005、
OH価1560） 24部
触媒（三共、DABCO33−LV） ２部
ガラスフアイバー（ユニチカ、ES−20T） 54部
イソシアネート配合
ジフエニルメタンジイソシアネート（化成アツプ
ジヨン、アイソネート143−Ｌ、NCO＝29.2±0.2
％） 100部
トリクロロフルオロメタン ５部
得られた複合成形体のＲ−RIM芯材の物性は
以下の通りであつた。Polyol-containing polymer polyol (Mitsui Nisso, POP31-28,
OH value 28.5) 76 parts Polymer polyol (Mitsui Nisso, XOR-005,
OH number 1560) 24 parts catalyst (Sankyo, DABCO33-LV) 2 parts glass fiber (Unitika, ES-20T) 54 parts isocyanate-blended diphenylmethane diisocyanate (Kasei Updition, Isonate 143-L, NCO = 29.2 ± 0.2
%) 100 parts Trichlorofluoromethane 5 parts The physical properties of the R-RIM core material of the obtained composite molded article were as follows.
比重 1.21 強度 288Kg／cm2
伸び 15％ 曲げ弾性率 19000Kg／cm2
実施例 ２
実施例１と同様にして作成したホーンパツド金
型形状の発泡塩ビシートを金型内にセツトしたま
ま、実施例１と同じRIM成形機にて以下に示す
硬質RIM配合（NCO Index1.10）を使用し、注
入（500〜530ｇ）して２分後に取り出し、外部に
発泡塩ビ表皮によるクツシヨンを有し且つ内部に
硬質RIM芯材を有する構造の複合成形体を得た。Specific gravity 1.21 Strength 288Kg/cm 2 Elongation 15% Flexural modulus 19000Kg/ cm 2Example 2 A foamed PVC sheet in the shape of a horn pad mold made in the same manner as in Example 1 was set in the mold, and then Using the same RIM molding machine, use the following hard RIM formulation (NCO Index 1.10), inject (500 to 530 g) and take it out after 2 minutes, and make a hard RIM with a cushion made of foamed PVC skin on the outside and a hard RIM on the inside. A composite molded body having a structure having a core material was obtained.
ポリオール配合
ポリオール（アデカ製、Ｔ−400、OH価400）
86部
グリセリン 14部
触媒（サンアボツト製、Poly Cat8） 1.5部
トリクロロフルオロメタン 10部
イソシアネート配合
粗ジフエニルメタンジイソシアネート（日本ポリ
ウレタン製、ミリオネートMR）
得られた複合成形体の硬質RIM芯材の物性は
以下の通りであつた。Polyol blend polyol (manufactured by ADEKA, T-400, OH value 400)
86 parts glycerin 14 parts catalyst (manufactured by Sunabott, Poly Cat8) 1.5 parts trichlorofluoromethane 10 parts Isocyanate-blended crude diphenylmethane diisocyanate (manufactured by Nippon Polyurethane, Millionate MR) The physical properties of the hard RIM core material of the resulting composite molded body are as follows. It was hot on the street.
比重 0.65 強度 170Kg／cm2 伸び ７％ 曲げ弾性率 9300Kg／cm2 Specific gravity 0.65 Strength 170Kg/cm 2 Elongation 7% Flexural modulus 9300Kg/cm 2
Claims (1)
性樹脂シートを熱成形して表皮を作成し、次にこ
の表皮を該雌型にセツトしたまま蓋により密閉状
としたのち、芯材用合成樹脂材料を反応射出成形
により注入硬化させることにより、全工程を通じ
て１つの型により、表皮と芯材を直接一体化させ
ることを特徴とする複合成形体の製造法。1. A thermoplastic resin sheet is thermoformed using a female mold with holes for vacuuming to create a skin. Next, this skin is set in the female mold and sealed with a lid, and then used as a core material. A method for manufacturing a composite molded article, which is characterized by directly integrating a skin and a core material in one mold throughout the entire process by injecting and curing a synthetic resin material by reaction injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5322883A JPS59178236A (en) | 1983-03-28 | 1983-03-28 | Manufacture of composite molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5322883A JPS59178236A (en) | 1983-03-28 | 1983-03-28 | Manufacture of composite molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59178236A JPS59178236A (en) | 1984-10-09 |
| JPH036890B2 true JPH036890B2 (en) | 1991-01-31 |
Family
ID=12936959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5322883A Granted JPS59178236A (en) | 1983-03-28 | 1983-03-28 | Manufacture of composite molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59178236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2659030B2 (en) * | 1991-09-12 | 1997-09-30 | デュポン・シンガポール・ピーティーイー・リミテッド | Connector device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2710869B1 (en) * | 1993-10-08 | 1995-12-29 | M3B | Multilayer material and manufacture thereof by pouring the coating material onto the base layer. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5757640A (en) * | 1980-09-24 | 1982-04-06 | Hitachi Ltd | Sound-shielding member and mold for forming the same |
-
1983
- 1983-03-28 JP JP5322883A patent/JPS59178236A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2659030B2 (en) * | 1991-09-12 | 1997-09-30 | デュポン・シンガポール・ピーティーイー・リミテッド | Connector device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59178236A (en) | 1984-10-09 |
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