JPH05229045A - Car interior material composed of polypropylene resin foamed sheet - Google Patents
Car interior material composed of polypropylene resin foamed sheetInfo
- Publication number
- JPH05229045A JPH05229045A JP4037843A JP3784392A JPH05229045A JP H05229045 A JPH05229045 A JP H05229045A JP 4037843 A JP4037843 A JP 4037843A JP 3784392 A JP3784392 A JP 3784392A JP H05229045 A JPH05229045 A JP H05229045A
- Authority
- JP
- Japan
- Prior art keywords
- polypropylene resin
- polypropylene
- foam sheet
- resin foam
- foamed sheet
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は自動車内装材に関し、特
に耐熱性、耐断熱に優れていると共に製造が容易で且つ
リサイクリングしやすい自動車用内装材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile interior material, and more particularly to an automobile interior material which is excellent in heat resistance and heat resistance and is easy to manufacture and easy to recycle.
【０００２】[0002]
【従来の技術】従来より自動車の内装材、例えば天井
材、ドアトリム、インパネ、ダッシュボ−ド等の内装材
としては種々のプラスチックス製品が用いられている。
例えば、ポリエチレンによる発泡体を主材にしたものが
あるが、ポリエチレンの発泡体のみでは剛性および自己
支持性の点で劣るため、形状の安定化が悪く、したがっ
て、予め自動車の内装に沿う形状へ大略的に成形してお
く必要があるが、このようなことは困難である。そのた
め、ポリエチレンによる発泡体に形状保持の目的でメタ
ルラスを貼り合わせたものも提案されたが、内張材とし
ての一体性が欠け易いと共にそれ自体の製造が面倒なほ
か、作業性の点でも良好なものではなかった。自動車用
内装材としては、８０℃以上の耐熱テストに合格するこ
とが要求され、しかも軽量化を阻害しないこと、およ
び、内装材として安全で且つ適度のこしの強さを失わな
いことなどが必要とされる。2. Description of the Related Art Conventionally, various plastic products have been used as interior materials for automobiles, such as ceiling materials, door trims, instrument panels and dashboards.
For example, there is a foam made of polyethylene as the main material, but the polyethylene foam is inferior in rigidity and self-supporting property, so the shape is poorly stabilized. It is necessary to mold it roughly, but such a thing is difficult. For this reason, a foam made of polyethylene with a metal lath attached for the purpose of retaining its shape was also proposed, but it is easy to lack the integrity as a lining material and the production itself is troublesome, and it is also good in terms of workability. It wasn't. As an interior material for automobiles, it is required to pass a heat resistance test at 80 ° C or higher, and it is necessary not to impede weight reduction and to be safe as an interior material and not lose a proper strain strength. To be done.
【０００３】そこで、このような特性を具備する内装材
として、スチレン・無水マレイン酸共重合体、またはこ
れとその他の熱可塑性樹脂とのブレンド品よりなる発泡
体の片面にスチレン・無水マレイン酸共重合体、または
これとその他の熱可塑性樹脂とのブレンド品よりなるフ
ィルムを積層し、発泡体の他面には防水紙を積層した内
装材が提案された（実公昭６２−３３１３号公報参
照）。Therefore, as an interior material having such characteristics, a styrene / maleic anhydride copolymer or a foamed product of a blend of the styrene / maleic anhydride copolymer and another thermoplastic resin is provided on one side of the styrene / maleic anhydride copolymer. An interior material has been proposed in which a film made of a polymer or a blended product thereof with another thermoplastic resin is laminated, and a waterproof paper is laminated on the other surface of the foam (see Japanese Utility Model Publication No. 62-3313). ..
【０００４】しかし、スチレン−無水マレイン酸共重合
体は、スチレン系樹脂で熱接着できる表皮材がなく、ま
た、天井材等に該共重合体を使用すると、こすれ音がす
る等の欠点があり、しかも安価なポリプロピレン系樹脂
の方が耐熱性を有する。また、最近自動車部品のリサイ
クルが問題となり、リサイクルしやすい内装材を使用す
ることが検討されている。However, the styrene-maleic anhydride copolymer does not have a skin material that can be heat-bonded with a styrene resin, and if the copolymer is used as a ceiling material or the like, there are drawbacks such as rubbing noise. Moreover, the cheaper polypropylene resin has heat resistance. Further, recently, recycling of automobile parts has become a problem, and use of interior materials that are easy to recycle is being considered.
【０００５】[0005]
【発明が解決しようとする課題】そこで、本発明者は上
記の要求に満足すべく種々検討した結果、本発明を完成
したもので、本発明の目的は安価に製造でき且つリサイ
クルできる自動車用内装材を提供するにある。Therefore, the present inventors have completed various aspects of the present invention as a result of various studies to satisfy the above requirements, and the object of the present invention is to manufacture the vehicle interior at low cost and to recycle it. To provide the material.
【０００６】[0006]
【課題を解決するための手段】すなわち、本発明の要旨
はポリプロピレン系樹脂発泡シ−トの両面にポリプロピ
レン系樹脂フィルムを積層し、該ポリプロピレン系樹脂
フィルムの一方の面にポリプロピレン系繊維よりなる不
織布またはポリプロピレン系エラストマ−等からなる表
皮材を貼着したことを特徴とするポリプロピレン系樹脂
発泡シ−トよりなる自動車内装材、及び、ポリプロピレ
ン系樹脂発泡シ−トの両面にポリプロピレン系樹脂フィ
ルムを積層し、該ポリプロピレン系樹脂フィルムの一方
の面に前記ポリプロピレン系樹脂発泡シ−トよりも密度
の小さいポリプロピレン系樹脂発泡シ−トを積層し、該
ポリプロピレン系樹脂発泡シ−トにポリプロピレン系繊
維よりなる不織布またはポリプロピレン系エラストマ−
等からなる表皮材を貼着したことを特徴とするポリプロ
ピレン系樹脂発泡シ−トよりなる自動車内装材である。That is, the gist of the present invention is to laminate a polypropylene resin film on both surfaces of a polypropylene resin foam sheet, and to form a nonwoven fabric made of polypropylene fibers on one surface of the polypropylene resin film. Or an automobile interior material made of a polypropylene resin foam sheet characterized by sticking a skin material made of a polypropylene elastomer, and a polypropylene resin film laminated on both sides of the polypropylene resin foam sheet. Then, a polypropylene resin foam sheet having a smaller density than the polypropylene resin foam sheet is laminated on one surface of the polypropylene resin film, and the polypropylene resin foam sheet is made of polypropylene fiber. Non-woven fabric or polypropylene elastomer
An automotive interior material made of a polypropylene-based resin foam sheet, characterized in that a skin material made of, for example, is attached.
【０００７】本発明で使用するポリプロピレン系樹脂発
泡シ−トの樹脂としては、ホモポリプロピレン樹脂をは
じめとして、プロピレンを８０％以上含む共重合体、ポ
リプロピレンを８０％以上含む混合物をいうのであっ
て、プロピレンと共重合するモノマ−としてはエチレ
ン、マレイン酸等であり、また、ポリプロピレンと混合
する樹脂としてはポリエチレン（例えばハイデンポリエ
チレン）等である。そして、これらを押出発泡してポリ
プロピレン系樹脂発泡シ−トを得るのであるが、密度と
しては０．０３ｇ／ｃｍ3〜０．３ｇ／ｃｍ3のものが望
ましい。発泡シ−トの密度が０．３ｇ／ｃｍ3より大き
いと、断熱効果が下がり、堅く、重くなり、またコスト
が大となり、他方、０．０３ｇ／ｃｍ3より小さいと強
度が弱く、連続気泡率が高くなる。また、連続気泡率が
高くなれば、強度（剛性）、熱伝導率、防水、防湿性、
二次発泡倍率等が低下し、特に二次成形性が悪くなる。The polypropylene resin foam sheet resin used in the present invention is a homopolypropylene resin, a copolymer containing 80% or more propylene, or a mixture containing 80% or more polypropylene. The monomer copolymerizable with propylene is ethylene, maleic acid or the like, and the resin mixed with polypropylene is polyethylene (for example, Heiden polyethylene) or the like. Then, these extrusion foaming to a foamed polypropylene resin sheet - although to obtain the door, as the density that of 0.03g / cm 3 ~0.3g / cm 3 is desirable. If the density of the foamed sheet is more than 0.3 g / cm 3 , the heat insulating effect is lowered, and it becomes stiff and heavy, and the cost becomes large, while if it is less than 0.03 g / cm 3 , the strength is weak and the open cells are present. The rate is high. In addition, if the open cell ratio increases, strength (rigidity), thermal conductivity, waterproofness, moisture resistance,
The secondary expansion ratio and the like decrease, and the secondary moldability particularly deteriorates.
【０００８】しかして、連続気泡率は低いものほど好ま
しいが、密度を下げようとすれば（倍率を上げようとす
れば）、連続気泡率が高くなる。密度と連続気泡率との
関係を図３で示すると、図３の右に移行するもの程（密
度の大なるもの程）、連続気泡率は下がる。換言する
と、高倍化するほど連続気泡率が高くなる。そして、気
泡の全てが連続気泡の場合には曲線Ａのような関係を示
す。密度が低くても連続気泡率の高いものは物性に悪影
響を及ぼすので、本発明の目的物に対しては、密度が低
く、且つ、連続気泡率の低いものが好ましく、このよう
な点から下記の数式を満足するものが好ましく、直線Ｂ
の下の領域のものが好ましい。 ｙ＜−５０ｌｏｇｘ （但し、ｘは密度、ｙは連続気泡率を表す。）The lower the open cell ratio is, the more preferable. However, if the density is decreased (the magnification is increased), the open cell ratio is increased. When the relationship between the density and the open cell rate is shown in FIG. 3, the open cell rate decreases as the density shifts to the right in FIG. 3 (the density increases). In other words, the higher the multiplication factor, the higher the open cell rate. When all the bubbles are continuous bubbles, the relationship as shown by the curve A is shown. Even if the density is low, a material having a high open cell ratio adversely affects the physical properties, and therefore a material having a low density and a low open cell rate is preferable for the object of the present invention. It is preferable that the following formula be satisfied, and the straight line B
Those in the lower region are preferred. y <−50logx (where x is the density and y is the open cell rate)
【０００９】本発明における連続気泡率の測定方法とし
ては、エアピクノメ−タ（空気比較式比重計法）で測定
した値で、ＡＳＴＭ Ｄ２８５６に準拠して行った。そ
して、本発明で使用するこの発泡シ−トとしては、厚み
２〜８ミリ程度のポリプロピレン系樹脂発泡シ−トが好
ましい。The method of measuring the open cell ratio in the present invention is a value measured by an air pycnometer (air-comparison hydrometer method) in accordance with ASTM D2856. As the foamed sheet used in the present invention, a polypropylene resin foamed sheet having a thickness of about 2 to 8 mm is preferable.
【００１０】本発明では上述の発泡シ−トの両面に強度
アップのためにポリプロピレン系樹脂フイルムを積層す
る。使用するポリプロピレン系樹脂とは、ホモポリプロ
ピレン樹脂をはじめとして、プロピレンを８０％以上含
む共重合体、ポリプロピレンを８０％以上含む混合物を
いうのであって、プロピレンと共重合するモノマ−とし
てはエチレン、マレイン酸等であり、また、ポリプロピ
レンと混合する樹脂としてはポリエチレン（例えばハイ
デンポリエチレン）等である。そして、これらの樹脂フ
イルムの厚さは１５０μ程度のものである。また、ポリ
プロピレン系樹脂フイルムの一方の面にポリプロピレン
系エラストマ−或はポリプロピレン系繊維よりなる不織
布等の表皮材を貼着する。このポリプロピレン系エラス
トマ−或はポリプロピレン系繊維よりなる不織布等の表
皮材は、従来この種の内装材に使用されているものであ
る。In the present invention, a polypropylene resin film is laminated on both sides of the above-mentioned foamed sheet in order to increase the strength. The polypropylene-based resin to be used is a homopolypropylene resin, a copolymer containing 80% or more of propylene, or a mixture containing 80% or more of polypropylene. As the monomer copolymerized with propylene, ethylene or maleic acid is used. Acids and the like, and a resin mixed with polypropylene is polyethylene (for example, Heiden polyethylene) or the like. The thickness of these resin films is about 150 μm. Further, a skin material such as a polypropylene elastomer or a non-woven fabric made of polypropylene fibers is attached to one surface of the polypropylene resin film. The skin material such as a non-woven fabric made of polypropylene type elastomer or polypropylene type fiber has been conventionally used for the interior material of this type.
【００１１】ポリプロピレン系樹脂発泡シ−トとポリプ
ロピレン系樹脂フィルムとの積層に当たっては強力な接
着剤によって行うこともできるが、同一系素材の特性を
生かした熱ラミネ−トの方法が最も容易で好ましい。こ
のポリプロピレン系樹脂フィルムの一方の面にポリプロ
ピレン系繊維よりなる不織布またはポリプロピレン系エ
ラストマ−からなる表皮材を貼着する。The lamination of the polypropylene resin foam sheet and the polypropylene resin film can be carried out by using a strong adhesive, but the method of thermal lamination utilizing the characteristics of the same material is the easiest and preferable. .. A non-woven fabric made of polypropylene fibers or a skin material made of polypropylene elastomer is attached to one surface of the polypropylene resin film.
【００１２】本発明では全てポリプロピレン系の素材を
使用しているので、熱ラミネ−トができ、この点本発明
では大きな利点である。更に、請求項２の発明では、上
述のポリプロピレン系樹脂フイルムにポリプロピレン系
樹脂発泡シ−トより密度の小さいポリプロピレン系樹脂
発泡シ−トを積層した後、表皮材を貼着する。このポリ
プロピレン系樹脂発泡シ−トより密度の小さいポリプロ
ピレン系樹脂発泡シ−トとしては０．０１〜０．０３ｇ
／ｃｍ3であり、パット材として作用し、より一層ソフ
トな感じを与える。Since all polypropylene materials are used in the present invention, heat lamination can be performed, which is a great advantage in the present invention. Further, in the invention of claim 2, a polypropylene resin foam sheet having a density lower than that of the polypropylene resin foam sheet is laminated on the above-mentioned polypropylene resin film, and then a skin material is attached. As a polypropylene resin foam sheet having a smaller density than this polypropylene resin foam sheet, 0.01 to 0.03 g is obtained.
/ Cm 3 , which acts as a pad material and gives a softer feeling.
【００１３】次に、本発明の実施態様を図１及び２をも
って説明する。図１において、ポリプロピレン系樹脂発
泡シ−ト１の両面に、ポリプロピレン系樹脂フィルム
２、３を積層する。そして、その一方の面に、例えばポ
リプロピレン系繊維よりなる不織布の表皮材４を貼着す
る。また、他の態様である図２においては、ポリプロピ
レン系樹脂フィルム３とポリプロピレン系繊維よりなる
不織布の表皮材４の間にポリプロピレン系樹脂発泡シ−
ト５を介在させたものである。Next, an embodiment of the present invention will be described with reference to FIGS. In FIG. 1, polypropylene resin films 2 and 3 are laminated on both sides of a polypropylene resin foam sheet 1. Then, a non-woven fabric skin material 4 made of, for example, polypropylene fiber is attached to one surface thereof. In FIG. 2, which is another embodiment, a polypropylene resin foam sheet is provided between the polypropylene resin film 3 and a non-woven fabric skin material 4 made of polypropylene fibers.
5 is interposed.
【００１４】[0014]
【発明の効果】本発明にかかる内装材は中心層としてポ
リプロピレン系樹脂発泡シ−トで構成されているので断
熱効果は大きく、耐熱性を有し、且つ軽量である。そし
て、全てポリプロピレンよりなる素材で構成されている
ので熱ラミネ−トの方法で容易に積層することが可能
で、且つリサイクルが良好である。Since the interior material according to the present invention comprises the polypropylene resin foam sheet as the central layer, it has a large heat insulating effect, heat resistance and is lightweight. Since it is entirely made of polypropylene, it can be easily laminated by the method of thermal lamination and is easily recycled.
【図１】本発明にかかる自動車内装材の断面図。FIG. 1 is a cross-sectional view of an automobile interior material according to the present invention.
【図２】本発明にかかる他の自動車内装材の断面図。FIG. 2 is a cross-sectional view of another automobile interior material according to the present invention.
【図３】ポリプロピレン系樹脂発泡シ−トの密度と連続
気泡率の関係図FIG. 3 is a diagram showing the relationship between the density and the open cell ratio of a polypropylene resin foam sheet.
１ ポリプロピレン系樹脂発泡シ−ト ２ ポリプロピレン系樹脂フィルム ３ ポリプロピレン系樹脂フィルム ４ ポリプロピレン系繊維よりなる不織布の表皮材 ５ ポリプロピレン系樹脂発泡シ−ト 1 Polypropylene-based resin foam sheet 2 Polypropylene-based resin film 3 Polypropylene-based resin film 4 Nonwoven fabric skin material made of polypropylene-based fiber 5 Polypropylene-based resin foamed sheet
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成４年５月１２日[Submission date] May 12, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図３[Name of item to be corrected] Figure 3
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図３】 [Figure 3]
Claims (2)
ポリプロピレン系樹脂フィルムを積層し、該ポリプロピ
レン系樹脂フィルムの一方の面にポリプロピレン系繊維
よりなる不織布またはポリプロピレン系エラストマ−等
からなる表皮材を貼着したことを特徴とするポリプロピ
レン系樹脂発泡シ−トよりなる自動車内装材。1. A polypropylene resin film is laminated on both sides of a polypropylene resin foam sheet, and one surface of the polypropylene resin film is covered with a nonwoven fabric made of polypropylene fibers or a skin material made of polypropylene elastomer. An automobile interior material made of a polypropylene resin foam sheet, which is characterized by being adhered.
ポリプロピレン系樹脂フィルムを積層し、該ポリプロピ
レン系樹脂フィルムの一方の面に前記ポリプロピレン系
樹脂発泡シ−トよりも密度の小さいポリプロピレン系樹
脂発泡シ−トを積層し、該ポリプロピレン系樹脂発泡シ
−トにポリプロピレン系繊維よりなる不織布またはポリ
プロピレン系エラストマ−等からなる表皮材を貼着した
ことを特徴とするポリプロピレン系樹脂発泡シ−トより
なる自動車内装材。2. A polypropylene resin film is laminated on both sides of a polypropylene resin foam sheet, and a polypropylene resin foam having a density smaller than that of the polypropylene resin foam sheet is formed on one surface of the polypropylene resin film. A polypropylene resin foam sheet characterized in that a sheet is laminated, and a non-woven fabric made of polypropylene fiber or a skin material made of polypropylene elastomer is attached to the polypropylene resin foam sheet. Automotive interior materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4037843A JP2577679B2 (en) | 1992-02-25 | 1992-02-25 | Automotive interior material made of polypropylene resin foam sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4037843A JP2577679B2 (en) | 1992-02-25 | 1992-02-25 | Automotive interior material made of polypropylene resin foam sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05229045A true JPH05229045A (en) | 1993-09-07 |
| JP2577679B2 JP2577679B2 (en) | 1997-02-05 |
Family
ID=12508817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4037843A Expired - Fee Related JP2577679B2 (en) | 1992-02-25 | 1992-02-25 | Automotive interior material made of polypropylene resin foam sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2577679B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH067927U (en) * | 1992-07-10 | 1994-02-01 | セーレン株式会社 | Interior skin material |
| EP0710581A1 (en) * | 1994-11-02 | 1996-05-08 | Klaus Steffes | Device for avoiding disturbing reflections on vehicle windscreens |
| SG85136A1 (en) * | 1998-10-19 | 2001-12-19 | Sumitomo Chemical Co | Laminated sheet |
| JP2013230785A (en) * | 2012-05-01 | 2013-11-14 | Wako Kasei Co Ltd | Back layer of vehicle ceiling material and method of manufacturing the same |
| JP2014000805A (en) * | 2012-05-25 | 2014-01-09 | Gifu Plast Ind Co Ltd | Laminated structure |
| JP2019189790A (en) * | 2018-04-27 | 2019-10-31 | 積水化学工業株式会社 | Adhesive tape |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6145128U (en) * | 1984-08-28 | 1986-03-25 | トヨタ自動車株式会社 | Automotive interior molding materials |
| JPS62174131A (en) * | 1986-01-28 | 1987-07-30 | Sekisui Chem Co Ltd | Manufacture of trim |
| JPH0174127U (en) * | 1987-11-09 | 1989-05-19 |
-
1992
- 1992-02-25 JP JP4037843A patent/JP2577679B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6145128U (en) * | 1984-08-28 | 1986-03-25 | トヨタ自動車株式会社 | Automotive interior molding materials |
| JPS62174131A (en) * | 1986-01-28 | 1987-07-30 | Sekisui Chem Co Ltd | Manufacture of trim |
| JPH0174127U (en) * | 1987-11-09 | 1989-05-19 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH067927U (en) * | 1992-07-10 | 1994-02-01 | セーレン株式会社 | Interior skin material |
| EP0710581A1 (en) * | 1994-11-02 | 1996-05-08 | Klaus Steffes | Device for avoiding disturbing reflections on vehicle windscreens |
| SG85136A1 (en) * | 1998-10-19 | 2001-12-19 | Sumitomo Chemical Co | Laminated sheet |
| JP2013230785A (en) * | 2012-05-01 | 2013-11-14 | Wako Kasei Co Ltd | Back layer of vehicle ceiling material and method of manufacturing the same |
| JP2014000805A (en) * | 2012-05-25 | 2014-01-09 | Gifu Plast Ind Co Ltd | Laminated structure |
| JP2019189790A (en) * | 2018-04-27 | 2019-10-31 | 積水化学工業株式会社 | Adhesive tape |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2577679B2 (en) | 1997-02-05 |
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