JPH0661888B2 - Laminate of polyurethane foam and polyolefin - Google Patents
Laminate of polyurethane foam and polyolefinInfo
- Publication number
- JPH0661888B2 JPH0661888B2 JP22372285A JP22372285A JPH0661888B2 JP H0661888 B2 JPH0661888 B2 JP H0661888B2 JP 22372285 A JP22372285 A JP 22372285A JP 22372285 A JP22372285 A JP 22372285A JP H0661888 B2 JPH0661888 B2 JP H0661888B2
- Authority
- JP
- Japan
- Prior art keywords
- polyurethane foam
- laminate
- polyolefin
- foam
- skin
- 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
Landscapes
- Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は自動車等の内装材例えば天井材，ドア−トリ
ム，インストルメントパネル，シート表皮材として好適
なポリウレタンフオームとポリオレフインの積層体に関
する。Description: FIELD OF THE INVENTION The present invention relates to a laminate of polyurethane foam and polyolefin suitable as an interior material for automobiles, such as a ceiling material, a door trim, an instrument panel, and a seat skin material.
従来技術 従来可撓性ポリウレタンフオームとオレフイン系シート
よりなる積層体は公知である。PRIOR ART Conventionally, a laminate comprising a flexible polyurethane foam and an olefin sheet is known.
しかし、従来の該積層体として使用するポリウレタンフ
オームの孔径は400〜700μで、自己スキンのない面で接
着されている。However, the conventional polyurethane foam used as the laminate has a pore size of 400 to 700 μm and is adhered on a surface having no self-skin.
ポリウレタンフオームの平均孔径がこのように粗大であ
ると、これをオレフインシートと接着すると、表面に
「あばた」模様が発生し、表面滑性が悪く、また両者の
接着性も悪い。この接着性を良好にしようとしてオレフ
イン樹脂を溶融押出して厚ぬりしたり、あるいは接着剤
を使用すると接着剤がフオームに含浸し、積層体の柔軟
性が悪くなる欠点が生ずる。When the average pore size of the polyurethane foam is such a large size, when it is adhered to the olefin sheet, a "flutter" pattern is generated on the surface, the surface slipperiness is poor, and the adhesiveness between the two is poor. When the olefin resin is melt-extruded to thicken the adhesive in order to improve the adhesiveness, or when the adhesive is used, the adhesive impregnates the foam, resulting in a drawback that the flexibility of the laminate is deteriorated.
発明の目的 本発明は従来のポリウレタンフオームとポリオレフイン
の積層体の欠点を解消しようとするものであり、その目
的は積層体の表面に「あばた」模様の発生がなく、表面
は平滑で薄いポリオレフイン層でも容易に接着し得ら
れ、柔軟性を損うことのない積層体を提供するにある。OBJECT OF THE INVENTION The present invention is intended to eliminate the drawbacks of conventional laminates of polyurethane foam and polyolefin, and the object thereof is to prevent the occurrence of “pock” patterns on the surface of the laminate and to provide a smooth and thin polyolefin layer. However, it is to provide a laminate which can be easily adhered and does not impair flexibility.
発明の構成 本発明者らは、前記目的を達成すべく研究の結果、ポリ
ウレタンフオームとして、自己スキン付ポリウレタンフ
オームのスキン面上の開口部面積率が１０％以上である
ものを使用し、このスキン面上にオレフイン系重合体層
を形成させると、従来の欠点を解消し得られることが分
つた。この知見に基いて本発明を完成した。As a result of research to achieve the above object, the inventors of the present invention used a polyurethane foam having a self-skin polyurethane foam having an opening area ratio on the skin surface of 10% or more. It has been found that forming an olefin polymer layer on the surface can eliminate the conventional drawbacks. The present invention has been completed based on this finding.
本発明の要旨は、可撓性連続気泡性の自己スキン付ポリ
ウレタンフオームのスキン面上の開口部面積率が１０％
以上であるスキン面上に、オレフイン系重合体層を形成
せしめてなるポリウレタンフオームとポリオレフインの
積層体にある。The gist of the present invention is that the opening area ratio on the skin surface of a flexible open-celled self-skinning polyurethane foam is 10%.
It is a laminate of polyurethane foam and polyolefin in which an olefin polymer layer is formed on the skin surface as described above.
本発明において使用するポリウレタンフオームは、可撓
性連続気泡性ポリウレタンであり、該ポリウレタンは自
己スキン付で、そのスキン面上の開口部面積率が１０％
以上のものである。この開口部面積率が１０％未満では
ポリオレフインとの接着性が悪い。好ましい範囲は１０
〜７０％である。このフオームの密度は0.01〜0.3ｇ／c
m3，好ましくは0.02〜0.07ｇ／cm3であり、平均孔径は
９０〜400μであることが適当である。平均孔径が９０
μ未満であるとポリオレフインとの接着性が悪く、400
μを超えると積層体のポリオレフイン側表面の平滑性が
悪くなる。The polyurethane foam used in the present invention is a flexible open-cell polyurethane, which has a self-skin and has an opening area ratio of 10% on the skin surface.
That is all. If the area ratio of the openings is less than 10%, the adhesiveness with polyolefin is poor. The preferred range is 10
~ 70%. The density of this foam is 0.01-0.3g / c
m 3 is preferably 0.02 to 0.07 g / cm 3 , and the average pore diameter is suitably 90 to 400 μ. Average pore size is 90
If it is less than μ, the adhesiveness with polyolefin is poor and 400
If it exceeds μ, the smoothness of the surface of the laminate on the polyolefin side becomes poor.
本発明における平均孔径，スキン面上の開口率は、 ｎ：単位面積あたりの開孔の数 ａ：孔径 Ａ：単位面積 で表わされる。The average pore diameter and the aperture ratio on the skin surface in the present invention are n: Number of openings per unit area a: Pore diameter A: Unit area
自己スキン付ウレタンのスキン面開孔の測定の場合は、
顕微鏡からの入力写真から画像処理装置（ADS（株）製
造）TP−５型へ入力し処理する。When measuring the skin surface opening of urethane with self-skin,
From the photograph input from the microscope, input it to the image processor (manufactured by ADS Co., Ltd.) TP-5 and process it.
なお、径については、各孔の面積から換算した円の直径
（等価円直径）である。The diameter is the diameter of a circle converted from the area of each hole (equivalent circle diameter).
フオームの厚さは用途により相違し、通常２〜５０mmの
範囲である。The thickness of the foam depends on the application and is usually in the range of 2 to 50 mm.
自己スキン付ウレタンフオームは、配合、攪拌したポリ
ウレタンフオーム原料を離けい紙などの離けい性の表面
に接触させながら発泡させることによつて得られる。The self-skinned urethane foam can be obtained by foaming while blending and stirring the polyurethane foam raw material while contacting it with a releasing surface such as releasing paper.
自己スキンの開口率と平均孔径の調整方法としては、
(1)前記離けい性の表面の状態を変化させる方法，(2)ポ
リウレタン製造時に原料中に空気を多量に溶存させる方
法，(3)整泡剤の選定及び配合量を変化させる方法，(4)
カーボンブラツクやホワイトカーボン等の核剤を添加す
る方法，(5)その他、ポリオール，イソシアナートの種
類を変化させる方法が挙げられる。As a method of adjusting the opening ratio of the self-skin and the average pore size,
(1) A method of changing the state of the surface of the releasing property, (2) A method of dissolving a large amount of air in the raw material during the production of polyurethane, (3) A method of selecting a foam stabilizer and changing the compounding amount, Four)
Examples include a method of adding a nucleating agent such as carbon black and white carbon, and (5) a method of changing the types of polyol and isocyanate.
オレフイン系重合体としては、ポリエチレン，ポリプロ
ピレン，エチレン−プロピレン共重合体，EPDMまたはEP
Mとポリエチレンまたはポリプロピレン等の混合物より
なるオレフイン系熱可塑性エラストマー，芳香族置換オ
レフイン例えばスチレン等，ハロゲン置換オレフインの
重合体例えば塩化ビニール重合体等が挙げられる。The olefin polymers include polyethylene, polypropylene, ethylene-propylene copolymer, EPDM or EP.
Examples include olefin-based thermoplastic elastomers composed of a mixture of M and polyethylene or polypropylene, aromatic-substituted olefins such as styrene, and halogen-substituted olefin polymers such as vinyl chloride polymers.
ポリウレタンフオームのスキン面にオレフイン重合体層
を形成させる方法としては、ポリウレタンフオームのス
キン面に(1)にポリオレフインの溶融物をコーテイング
して圧着させる方法で押出しコーテイングといわれる方
法，(2)ポリオレフインシートをカレンダーロールで加
熱圧着させる方法，(3)予め得られたポリオレフイン重
合体のフイルムまたはシートを加熱しポリウレタンフオ
ームに圧着させる方法等いずれの方法でもよい。As a method of forming an olefin polymer layer on the skin surface of polyurethane foam, a method called extrusion coating is used, in which (1) a melt of polyolefin is coated on the skin surface of the polyurethane foam and pressure-bonded, (2) polyolefin sheet May be heat-pressed with a calendar roll, (3) a film or sheet of the polyolefin polymer obtained in advance may be heated and pressure-bonded to the polyurethane foam.
実施例１． ポリエーテルポリオール（EP330C，三井日曹ウレタン社
製）100重量部（以下部は重量部を表わす）、シリコン
油１部，水2.5部，アミン系触媒33LV（三共−エア−プ
ロダクツ社製）0.3部，オクタン酸第１すず0.2部，トル
エンジイソシアナート（TDI−６５三井日曹ウレタン社
製）30.7部，着色剤TURO 143（カーボンを主体としたも
の，東洋インキ社製）５部の混合物を高速攪拌し、離け
い紙面上に塗布し、上面に離けい紙をすばやくかぶせ、
厚さ５mmになるように発泡させて両面自己スキン付ポリ
ウレタンフオームを製造した。Example 1. Polyether polyol (EP330C, Mitsui Nisso Urethane Co., Ltd.) 100 parts by weight (the following parts represent parts by weight), silicone oil 1 part, water 2.5 parts, amine catalyst 33LV (Sankyo Air Products Co., Ltd.) 0.3 parts , A mixture of 0.2 parts of tin (I) octanoate, 30.7 parts of toluene diisocyanate (TDI-65 manufactured by Mitsui Nisso Urethane Co., Ltd.), and 5 parts of colorant TURO 143 (mainly composed of carbon, manufactured by Toyo Ink Co., Ltd.) at high speed. Stir, apply on top of the release liner, quickly cover the top side with release liner,
A polyurethane foam with double-sided self-skin was produced by foaming to a thickness of 5 mm.
得られたフオームは密度0.043ｇ／cm3で、フオームの平
均孔径は180μ、自己スキンの開口面積率は４５％の可
撓性連続気泡性のフオームであつた。The obtained foam had a density of 0.043 g / cm 3 , a foam having an average pore diameter of 180 μ, and a self-skin open area ratio of 45%, which was a flexible open-cell foam.
該フオームをそのまま、または半分に平行方向に裁断し
て片面自己スキン付フオームを作つた。The foam was cut as it was or in half in a parallel direction to form a one-sided self-skinned foam.
９０mmφの単一スクリユー押出機（Ｌ／Ｄ＝34）とコー
トハンガーダイを取付け、これによりEPDMとポリプロピ
レンからなるオレフイン系熱可塑性エラストマーで、メ
ルトフローレート0.1ｇ／10分のものを、厚さ約0.25mm
の下で、自己スキン面上に押出しコーテイングして積層
体を作つた。A 90 mmφ single screw extruder (L / D = 34) and a coat hanger die were attached, and by doing so, an olefin thermoplastic elastomer composed of EPDM and polypropylene with a melt flow rate of 0.1 g / 10 min, a thickness of approximately 0.25 mm
A laminate was made by extrusion coating on the self-skinned surface under.
前記押出し条件はリツプ0.8mm，ダイ温度は260℃であつ
た。The extrusion conditions were a rip 0.8 mm and a die temperature of 260 ° C.
得られた積層体の表面は平滑で「あばた」は形成され
ず、また２５mm幅での180°引きはがし強度は0.25Kg／2
5mmであり、材料破壊をしていた。The surface of the obtained laminate was smooth and had no pockmark, and the peel strength of 180 ° in the width of 25 mm was 0.25 kg / 2.
It was 5 mm, and the material was destroyed.
なお、フオームとポリオレフイン層を引きはがすと、ポ
リオレフインの接着面がざらざらの突起があり、スキン
面にこの突起がつきささつていたことがわかる。Note that when the foam and the polyolefin layer were peeled off, it was found that the adhesive surface of the polyolefin had rough projections, and the skin surface had these projections.
比較例１． 市販のポリエーテル系のポリウレタンフオーム（平均セ
ル径500μ、密度0.02ｇ／cm3）５mm厚のものを用いて、
実施例１と同じようにしてポリオレフインを積層して積
層体を作つた。Comparative Example 1. Using a commercially available polyether type polyurethane foam (average cell diameter 500μ, density 0.02 g / cm 3 ) 5 mm thick,
A laminate was prepared by laminating polyolefin in the same manner as in Example 1.
得られた積層体のひきはがし強度は0.14Kg／25mmであつ
た。その表面は「あばた」が形成されたものであつた。The peel strength of the obtained laminate was 0.14 kg / 25 mm. The surface had "abata" formed on it.
比較例２． 実施例１と同じポリウレタン原料で、シリコン油をそれ
より強力な整泡力を持つシリコン油に代え、同じ方法で
５mm厚の自己スキン付ポリウレタンフオームを作つた。
得られたポリウレタンフオームの密度は0.041ｇ／cm
3で、スキン面平均孔径120μ，スキン面の開口面積率は
８％であつた。このフオームを用い、実施例１と同様に
してポリオレフインとの積層体を作つた。Comparative example 2. The same polyurethane raw material as in Example 1 was used, and the silicone oil was replaced with silicone oil having a stronger foam control power, and a 5 mm thick self-skin polyurethane foam was prepared in the same manner.
The density of the obtained polyurethane foam is 0.041 g / cm.
No. 3 , the skin surface average pore diameter was 120 μ, and the skin surface opening area ratio was 8%. Using this foam, a laminate with polyolefin was prepared in the same manner as in Example 1.
得られた積層体は表面は平滑であつたが、ひきはがし強
度は0.05Kg／25mmで、極めて弱い接着力であつた。The surface of the obtained laminate was smooth, but the peel strength was 0.05 kg / 25 mm, and the adhesive strength was extremely weak.
実施例２． 実施例１で得られた厚み５mmの両面自己スキン付ポリウ
レタンフオームに100μの低密度ポリエチレンフイルム
を重ね、150℃で１４Kg／cm2の圧力をかけて積層体を作
つた。得られた積層体は「あばた」がなく、またフイル
ムをはがそうとしたが、強力に接着しているため材料が
破壊してしまつた。Example 2. A 5 μm thick double-sided self-skin polyurethane foam obtained in Example 1 was overlaid with 100 μ of low-density polyethylene film, and a pressure of 14 kg / cm 2 was applied at 150 ° C. to form a laminate. The obtained laminate had no "pock" and the film was peeled off, but the material was destroyed due to the strong adhesion.
比較例３． 比較例１で使用した市販のポリウレタンフオーム５mm厚
のものを用いて、実施例２と同様にポリエチレンフイル
ムとの積層体を作つた。得られた積層体は、接着は強力
であつたが「あばた」がはげしかつた。Comparative Example 3. Using the commercially available polyurethane film having a thickness of 5 mm used in Comparative Example 1, a laminate with a polyethylene film was prepared in the same manner as in Example 2. The obtained laminate had strong adhesion, but the "pocktail" peeled off.
発明の効果 本発明の積層体は、ポリオレフインとポリウレタンフオ
ームとの接着性が優れ、ポリオレフイン層が薄くても表
面に「あばた」が生ずることがなく平滑で、外観が美し
い。EFFECTS OF THE INVENTION The layered product of the present invention has excellent adhesion between the polyolefin and the polyurethane foam, and even if the polyolefin layer is thin, it does not cause “pitting” on the surface and is smooth and has a beautiful appearance.
また、両面自己スキン付ポリウレタンフオームを使用す
ると、ポリウレタンフオーム側に他の物を接着する場
合、接着剤がフオームに含浸されることが少ないため、
少量の接着剤使用ですむ、等の優れた効果を奏し得られ
る。In addition, when using a double-sided self-skinned polyurethane foam, when bonding other things to the polyurethane foam side, the adhesive is less likely to be impregnated into the foam,
It has excellent effects such as the use of a small amount of adhesive.
Claims (2)
タンフオームのスキン面上の開口部面積率が１０％以上
であるスキン面上に、オレフイン系重合体層を形成せし
めてなるポリウレタンフオームとポリオレフインの積層
体。1. A polyurethane foam in which an olefin polymer layer is formed on a skin surface of a flexible open-celled self-skin polyurethane foam having an opening area ratio of 10% or more on the skin surface. Polyolefin laminate.
孔径が９０〜400μである特許請求の範囲第１項記載の
積層体。2. The laminate according to claim 1, wherein the self-skinning polyurethane foam has an average pore size of 90 to 400 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22372285A JPH0661888B2 (en) | 1985-10-09 | 1985-10-09 | Laminate of polyurethane foam and polyolefin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22372285A JPH0661888B2 (en) | 1985-10-09 | 1985-10-09 | Laminate of polyurethane foam and polyolefin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6283135A JPS6283135A (en) | 1987-04-16 |
| JPH0661888B2 true JPH0661888B2 (en) | 1994-08-17 |
Family
ID=16802652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22372285A Expired - Lifetime JPH0661888B2 (en) | 1985-10-09 | 1985-10-09 | Laminate of polyurethane foam and polyolefin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0661888B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03258531A (en) * | 1990-03-09 | 1991-11-18 | Kokushin Sangyo Kk | Composite polyurethane foam and manufacture thereof |
| US5437822A (en) * | 1992-01-29 | 1995-08-01 | Asahi Glass Company Ltd. | Method for producing a skin-formed polyurethane foam molded product |
-
1985
- 1985-10-09 JP JP22372285A patent/JPH0661888B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6283135A (en) | 1987-04-16 |
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