JP2505705B2 - Stamping skin material and method for manufacturing the skin material - Google Patents
Stamping skin material and method for manufacturing the skin materialInfo
- Publication number
- JP2505705B2 JP2505705B2 JP5275106A JP27510693A JP2505705B2 JP 2505705 B2 JP2505705 B2 JP 2505705B2 JP 5275106 A JP5275106 A JP 5275106A JP 27510693 A JP27510693 A JP 27510693A JP 2505705 B2 JP2505705 B2 JP 2505705B2
- Authority
- JP
- Japan
- Prior art keywords
- skin material
- foam
- stamping
- soft sheet
- manufacturing
- 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
- Laminated Bodies (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、スタンピング用表皮材
および該表皮材の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin material for stamping and a method for manufacturing the skin material.
【０００２】[0002]
【従来の技術】従来この種の表皮材は、絞付け工程を経
た塩化ビニルシートを、所望倍率に発泡形成せしめたウ
レタンフォームにラミネートして積層されていたもので
あり、スタンピングにより自動車用の内装材，観覧椅
子，ケース等を形成していた。2. Description of the Related Art Conventionally, a skin material of this type has been obtained by laminating a vinyl chloride sheet that has been subjected to a squeezing process on a urethane foam that has been foam-formed to a desired ratio and is laminated by stamping. The materials, viewing chairs, cases, etc. were formed.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記従来の表
皮材では工程中における厚み変化率が高かったため、ス
タンピング製品の表面（表皮材の軟質シート表面）に、
あばた（面荒れ）等が生じる虞れが極めて高く不良品の
原因となっていた。However, since the above-described conventional skin material has a high rate of change in thickness during the process, the surface of the stamping product (the surface of the soft sheet of the skin material) is
There is a high possibility that patters (roughness) and the like will occur, causing defective products.
【０００４】本発明は、従来技術の有するこのような問
題点に鑑みなされたものであり、その目的とするところ
は、製品仕上がり精度の高いスタンピング用表皮材を提
供することと、上記表皮材を製造せしめる方法を提供す
ることである。The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a stamping skin material having a high finished precision of a product, and the above skin material. It is to provide a manufacturing method.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に本発明がなした技術的手段は、軟質シートとＰＰ（ポ
リプロピレン）フォームとの積層にて構成され、上記軟
質シートが絞形成されていると共に、ＰＰフォームが圧
縮形成されており、その全体厚みの変化率が、１２０℃
〜１４０℃加熱時に４．５％以下としたことである。Means for Solving the Problems The technical means of the present invention for achieving the above object is constituted by laminating a soft sheet and PP (polypropylene) foam, and the soft sheet is formed by drawing. In addition, the PP foam is compressed and formed, and the rate of change in the overall thickness is 120 ° C.
That is, when heated to ˜140 ° C., it is 4.5% or less.
【０００６】また、上記表皮材はＰＰフォームと軟質シ
ートとを積層し、そしてその後加熱圧縮して絞付けする
ことにより形成される。また、軟質シートを絞形成する
と共に、ＰＰフォームを加熱圧縮せしめ、そして次に上
記軟質シートとＰＰフォームとを積層せしめるものとし
ても上記同様のスタンピング用表皮材が形成できる。The skin material is formed by laminating a PP foam and a soft sheet, and then heat-pressing and squeezing. A stamping skin material similar to that described above can be formed by forming the soft sheet by drawing, compressing the PP foam by heating, and then laminating the soft sheet and the PP foam.
【０００７】[0007]
【実施例】以下、本発明スタンピング用表皮材および該
表皮材の製造方法の一実施例を説明すると、本スタンピ
ング用表皮材は、軟質シートとＰＰ（ポリプロピレン）
フォームとを接着剤を介して、あるいはラミネート加工
等の任意手段により積層状に構成されているもので、上
記軟質シートは絞形成されていると共に、ＰＰフォーム
は圧縮形成されており、表皮材の全体厚みの変化率が、
１２０℃〜１４０℃加熱時に４．５％以下のものであ
る。この厚み変化率が４．５％よりも高いと、あばた
（面荒れ），皺等の発生率が高く好ましくない。EXAMPLES Hereinafter, one example of the skin material for stamping of the present invention and the method for producing the skin material will be described. The skin material for stamping is a soft sheet and PP (polypropylene).
The foam is laminated with an adhesive or by any means such as laminating. The soft sheet is formed by drawing and the PP foam is formed by compression. The change rate of the total thickness is
It is 4.5% or less when heated at 120 ° C to 140 ° C. If the thickness change rate is higher than 4.5%, the occurrence rate of pockmarks (surface roughness), wrinkles, etc. is high, which is not preferable.
【０００８】軟質シートは、塩化ビニル樹脂（ＰＶＣ）
等を主成分とし、これに可塑剤，安定剤，改質剤（ゴム
系，ＡＢＳ系等）等の周知の添加物を必要に応じて所望
量添加して構成し、これをカレンダー成形，押出し成形
等の周知手段によって所望厚さに形成し、そして所望絞
付け形成される。尚、シート厚は表皮材からなる製品に
よって異なるもので限定されず任意である。The soft sheet is made of vinyl chloride resin (PVC).
Etc. as a main component, and well-known additives such as plasticizers, stabilizers, modifiers (rubber-based, ABS-based, etc.) are added in desired amounts as necessary, and this is calendered and extruded. It is formed into a desired thickness by a well-known means such as molding, and then formed into a desired drawing. The sheet thickness differs depending on the product made of the skin material and is not limited and is arbitrary.
【０００９】また、軟質シートを構成する材料は上記塩
化ビニル樹脂を主成分としてなるものに限らず、ＴＰＥ
（サーモプラスチックエラストマー），織布，不織布等
であってもよくその構成は何等限定されるものではなく
適宜変更可能なものである。また、その表面はアクリル
系，ウレタン系塗料にシリカ分を混合した艶調整剤を塗
布する。Further, the material constituting the soft sheet is not limited to the one mainly containing the above vinyl chloride resin, but TPE
It may be a (thermoplastic elastomer), a woven fabric, a non-woven fabric or the like, and the constitution thereof is not limited at all and can be changed appropriately. In addition, the surface is coated with a gloss adjusting agent in which silica is mixed with acrylic or urethane paint.
【００１０】ＰＰフォームは、ポリプロピレン（ＰＰ）
１００重量部に対して、架橋成分，発泡剤，気泡調節剤
等を所望量添加して、押出し、電子線架橋を行い発泡さ
せ、所望発泡倍率，所望厚さにポリプロピレンフォーム
（ＰＰＦ）を形成し、そして上記ＰＰＦを所望手段で圧
縮して所望厚さに収縮形成して構成されている。PP foam is polypropylene (PP)
A desired amount of a cross-linking component, a foaming agent, a cell regulator, etc. is added to 100 parts by weight, and the mixture is extruded, electron-beam cross-linked and foamed to form a polypropylene foam (PPF) having a desired expansion ratio and a desired thickness. Then, the PPF is compressed by a desired means to be contracted to a desired thickness.
【００１１】発泡剤は、例えばアゾジカルボン酸アミド
等が用いられ、ゲル分率は４０％以上が好ましい。４０
％以下では、スタンピング成形時に溶けたり、破壊され
たりする虞れがあるからである。ＰＰフォーム（ＰＰ
Ｆ）は、例えば東レペフ13030PPF（１３倍発泡），1503
0PPF（１５倍発泡）（東レ株式会社）等の２０倍発泡以
下の倍率が好ましく用いられる。As the foaming agent, for example, azodicarboxylic acid amide is used, and the gel fraction is preferably 40% or more. 40
This is because if it is less than 100%, it may be melted or destroyed during stamping molding. PP foam (PP
F) is, for example, Toray Pef 13030PPF (13 times foam), 1503
A magnification of 20 times or less such as 0PPF (15 times foaming) (Toray Industries, Inc.) is preferably used.
【００１２】ここで上記表皮材の具体的製造方法につい
て説明する。A specific method for manufacturing the above skin material will be described below.
【００１３】まず、下記（イ）の配合にて所望厚さの塩
化ビニルシート（ＰＶＣ）１を形成する。First, a vinyl chloride sheet (PVC) 1 having a desired thickness is formed with the following composition (a).
【００１４】 配合（イ） ＰＶＣ（重合度１３００） １００重量部 フタル酸エステル系可塑剤 ５５重量部 エポキシ化大豆油 ２重量部 Ｂａ−Ｚｎ系安定剤 １．５重量部 改質剤（ゴム系） ２０重量部 難燃剤（Ｓｂ2 Ｏ3 ） ２重量部Compounding (a) PVC (polymerization degree 1300) 100 parts by weight Phthalate ester plasticizer 55 parts by weight Epoxidized soybean oil 2 parts by weight Ba-Zn stabilizer 1.5 parts by weight Modifier (rubber-based) 20 parts by weight Flame retardant (Sb 2 O 3 ) 2 parts by weight
【００１５】次に、１５倍発泡の３ｍｍ厚にＰＰフォー
ム（ＰＰＦ）を発泡形成する（上記東レペフ15030PPF
（１５倍発泡，東レ株式会社））。Next, PP foam (PPF) is foamed to a thickness of 15 times and 3 mm thick (the above-mentioned Toray Pef 15030PPF).
(15 times foaming, Toray Industries, Inc.)).
【００１６】そして、上記ＰＰフォーム（ＰＰＦ）の表
面に、上記形成された塩化ビニルシート（ＰＶＣ）を接
着剤（図示省略）を介して積層し積層体を形成する。
尚、接着剤は限定されないが、例えばウレタン系等の接
着剤を用いる。Then, the formed vinyl chloride sheet (PVC) is laminated on the surface of the PP foam (PPF) via an adhesive (not shown) to form a laminate.
The adhesive is not limited, but urethane-based adhesive or the like is used, for example.
【００１７】そして次に、上記積層体を所定間隙とした
絞ロールに通して加熱圧縮して塩化ビニルシートの表面
に絞を形成すれば、その加熱圧縮作用により上記ＰＰフ
ォーム（ＰＰＦ）が圧縮されて収縮状態となったＰＰフ
ォーム（ＰＰＦ）を備えた表皮材が形成される。尚、こ
の加熱圧縮工程は、温度１８０〜２１０℃（PVC 面），
速度４〜８ｍ／ｍｉｎ，絞圧５０〜６０kg／ｃｍ，クリ
アランスなしの諸条件の下に行ったが、この条件は一例
にすぎず適宜変更対応するものである。したがって、上
記工程を経ることにより常に一定厚みの表皮材となるた
め、スタンピング時のクリアランスのばらつきが少なく
なる。Then, the laminated body is passed through a squeezing roll having a predetermined gap and heated and compressed to form a squeeze on the surface of the vinyl chloride sheet, and the PP foam (PPF) is compressed by the heat and compression action. A skin material including PP foam (PPF) in a contracted state is formed. In this heating and compression process, the temperature is 180-210 ° C (PVC surface),
The speed was 4 to 8 m / min, the throttling pressure was 50 to 60 kg / cm, and various conditions without clearance were used, but these conditions are merely examples and can be changed appropriately. Therefore, since the skin material having a constant thickness is always obtained through the above steps, the variation in the clearance at the time of stamping is reduced.
【００１８】また、塩化ビニルシートを絞ロールに通し
て加熱圧縮して塩化ビニルシートの表面に絞を形成し、
そしてこれとは別個にＰＰフォームのみを単体で加熱圧
縮せしめて収縮状態のＰＰフォームを形成し、そして上
記絞付けした塩化ビニルシートと収縮状態のＰＰフォー
ムを積層せしめる方法で表皮材を形成するものとしても
よく、上記方法により形成された表皮材と同等効果を奏
する。Further, the vinyl chloride sheet is passed through a squeezing roll to be heated and compressed to form a diaphragm on the surface of the vinyl chloride sheet,
Separately from this, the PP foam alone is heated and compressed alone to form a contracted PP foam, and the skin material is formed by laminating the squeezed vinyl chloride sheet and the contracted PP foam. The same effect as the skin material formed by the above method can be obtained.
【００１９】ここで本発明表皮材における厚み変化率
を、比較例と共に下記表１に比較して示す。実施例１，
２は塩化ビニルシートと収縮状態のＰＰフォーム（１３
倍発泡３ｍｍ圧縮後、１５倍発泡３ｍｍ圧縮後）とを積
層した後に絞付けしたもの、一方比較例１，２は単体で
絞付けした塩化ビニルシートと、本実施例における発泡
後（圧縮形成前）のＰＰフォーム（１３倍発泡３ｍｍ圧
縮前、１５倍発泡３ｍｍ圧縮前）とを積層したものであ
り、塩化ビニルシートは全て（実施例，比較例共）上記
実施例記載の配合からなるもので０．６ｍｍ厚に形成さ
れたものである。Here, the rate of change in thickness of the skin material of the present invention is shown in Table 1 below together with Comparative Examples. Example 1,
2 is vinyl chloride sheet and PP foam (13
After double compression 3 mm compression and 15 times expansion 3 mm compression) were laminated and then squeezed, while Comparative Examples 1 and 2 were singly squeezed vinyl chloride sheets and after expansion in this example (before compression formation). ) PP foam (before 13 times foaming 3mm compression, before 15 times foaming 3mm compression) are laminated, and all vinyl chloride sheets (both Examples and Comparative Examples) have the composition described in the above Examples. It is formed to have a thickness of 0.6 mm.
【００２０】[0020]
【表１】 [Table 1]
【００２１】また、上記実施例１，２の表皮材Ａと比較
例１，２表皮材との折り曲げ応力を測定し、下記表２に
比較して示す。尚、図中Ａは試験片、Ｂはストログラフ
用圧力試験器具を示す。The bending stresses of the skin materials A of Examples 1 and 2 and the skin materials of Comparative Examples 1 and 2 were measured and are shown in Table 2 below. In the figure, A is a test piece, and B is a strograph pressure test device.
【００２２】[0022]
【表２】 [Table 2]
【００２３】[0023]
【発明の効果】本発明は、上記構成としたことで、表皮
材全体の厚み変化率が極めて低くなったため、表皮材の
厚み変化率が高かったことから生じていた、あばた（面
荒れ），皺，白化等の従来の問題も解消され、不良品発
生率が大幅に低下した。従って、本発明によれば製品仕
上がり精度の高いスタンピング用表皮材が提供できるこ
ととなる。EFFECTS OF THE INVENTION In the present invention, since the thickness change rate of the entire skin material is extremely low due to the above constitution, the patter (surface roughness) caused by the high thickness change rate of the skin material, Conventional problems such as wrinkles and whitening have been resolved, and the rate of defective products has dropped significantly. Therefore, according to the present invention, it is possible to provide a skin material for stamping which has high finished accuracy of products.
【００２４】また、本発明では表皮材成形時にＰＰフォ
ーム材を圧縮形成せしめる方法によりスタンピング用表
皮材を形成するものとしたため、厚み変化率が小さい表
皮材が製造できる。Further, in the present invention, since the stamping skin material is formed by compressing and forming the PP foam material at the time of molding the skin material, the skin material having a small thickness change rate can be manufactured.
【００２５】さらに、本発明表皮材からなる製品は、ス
タンピング後に端縁を内側に折り曲げて縁処理をする必
要があるが、折り曲げ応力が小さいため折り曲げ加工容
易となり作業性もよく労力軽減ともなる。Further, in the product made of the skin material of the present invention, it is necessary to bend the edges inward after stamping for edge treatment, but since the bending stress is small, the bending process is easy, workability is good and labor is reduced.
【図１】折り曲げ応力試験の縦断正面図FIG. 1 Front view in vertical section of bending stress test
Ａ：試験片（表皮材） Ｂ：試験器具 A: Test piece (skin material) B: Test device
Claims (3)
成され、上記軟質シートが絞形成されていると共に、Ｐ
Ｐフォームが圧縮形成されており、その全体厚みの変化
率が、１２０℃〜１４０℃加熱時に４．５％以下である
ことを特徴とするスタンピング用表皮材。1. A laminated sheet of a soft sheet and PP foam, wherein the soft sheet is formed by drawing and P
A skin material for stamping, wherein P foam is formed by compression, and a change rate of the entire thickness thereof is 4.5% or less when heated at 120 ° C to 140 ° C.
してその後加熱圧縮して絞付けすることを特徴とするス
タンピング用表皮材の製造方法。2. A method of manufacturing a skin material for stamping, which comprises laminating a PP foam and a soft sheet, and then heat-pressing and pressing.
ームを加熱圧縮せしめ、そして次に上記軟質シートとＰ
Ｐフォームとを積層せしめることを特徴とするスタンピ
ング用表皮材の製造方法。3. A soft sheet is drawn and PP foam is heat-compressed, and then said soft sheet and P
A method for manufacturing a stamping skin material, which comprises laminating P foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5275106A JP2505705B2 (en) | 1993-11-04 | 1993-11-04 | Stamping skin material and method for manufacturing the skin material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5275106A JP2505705B2 (en) | 1993-11-04 | 1993-11-04 | Stamping skin material and method for manufacturing the skin material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07125123A JPH07125123A (en) | 1995-05-16 |
| JP2505705B2 true JP2505705B2 (en) | 1996-06-12 |
Family
ID=17550836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5275106A Expired - Lifetime JP2505705B2 (en) | 1993-11-04 | 1993-11-04 | Stamping skin material and method for manufacturing the skin material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2505705B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6015059U (en) * | 1983-07-12 | 1985-02-01 | 林テレンプ株式会社 | Terminal structure of molded ceiling interior material |
| JPH0314335Y2 (en) * | 1986-11-10 | 1991-03-29 | ||
| JP3078089B2 (en) * | 1992-03-13 | 2000-08-21 | 積水化学工業株式会社 | Interior molded products for vehicles |
-
1993
- 1993-11-04 JP JP5275106A patent/JP2505705B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07125123A (en) | 1995-05-16 |
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