JPH10181468A - Floor laying interior material for automobile and manufacture thereof - Google Patents
Floor laying interior material for automobile and manufacture thereofInfo
- Publication number
- JPH10181468A JPH10181468A JP8347665A JP34766596A JPH10181468A JP H10181468 A JPH10181468 A JP H10181468A JP 8347665 A JP8347665 A JP 8347665A JP 34766596 A JP34766596 A JP 34766596A JP H10181468 A JPH10181468 A JP H10181468A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- carpet
- cavity
- automobile
- interior material
- 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
Landscapes
- Passenger Equipment (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Body Structure For Vehicles (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は自動車のフロアパ
ネル上に装飾、防音用途に敷設する自動車用フロア敷設
内装材およびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interior material for an automobile floor laying on a floor panel of an automobile for decoration and soundproofing, and a method of manufacturing the same.
【０００２】[0002]
【従来の技術】従来より自動車のフロアパネル上に内装
材を敷設し車内を装飾するとともに、防音性を高めてい
た。その基本的な構成は表層のカーペットと裏層の緩衝
材を積層したものであった。特に防音特性は各種の緩衝
材の選択によって大きく影響されることが知られてい
る。2. Description of the Related Art Conventionally, interior materials have been laid on floor panels of automobiles to decorate the interior of the car and to improve soundproofing. The basic configuration was such that a carpet on the surface layer and a cushioning material on the back layer were laminated. In particular, it is known that the soundproofing characteristics are greatly affected by the selection of various cushioning materials.
【０００３】例えばウレタン樹脂発泡体やフェルトなど
の多孔質吸音材を緩衝材として用いることが多かった
が、この場合、４００Ｈｚ以上の高い周波数では良好な
防音性能を示すものの、１００〜４００Ｈｚの低周波数
成分、特にエンジンノイズの２〜３次成分や、ロードノ
イズに対しては十分な防音性能が得られず改良が求めら
れていた。For example, a porous sound absorbing material such as a urethane resin foam or felt is often used as a cushioning material. In this case, a high frequency of 400 Hz or more exhibits good soundproofing performance, but a low frequency of 100 to 400 Hz. Sufficient soundproofing performance has not been obtained for components, especially the second and third order components of engine noise and road noise, and improvements have been required.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記従来技
術の実情に鑑み、１００〜５ｋＨｚの広範囲の防音性に
優れた自動車用フロア敷設内装材およびその製造方法を
提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide an automobile floor laying interior material excellent in soundproofing in a wide range of 100 to 5 kHz and a method of manufacturing the same, in view of the above-mentioned prior art. .
【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、この発明は、自動車のフロアパネル上に装飾、防音
用途に敷設する自動車用フロア敷設内装材であって、表
面のカーペット層と裏面の緩衝材層の間に空洞層を、少
なくとも所望の領域全体にわたって形成してなることを
特徴とする。そして前記空洞層は、非通気性の樹脂フィ
ルム間に気体を容れて形成されている。さらには、前記
カーペットと前記空洞層の間に補強シートが形成されて
いるものが好ましい。In order to achieve the above object, the present invention relates to an interior material for automobile floor laying, which is laid on a floor panel of an automobile for decoration and soundproofing. Wherein a cavity layer is formed at least over the entire desired region between the cushioning material layers. The hollow layer is formed by containing a gas between non-breathable resin films. Further, it is preferable that a reinforcing sheet is formed between the carpet and the hollow layer.
【０００６】また、この発明は、上記の自動車用フロア
敷設内装材の製造方法であって、カーペットの裏面に熱
可塑性樹脂のバッキングを施す工程と、前記バッキング
を施したカーペットを、裏面から加熱して前記バッキン
グを軟化させる工程と、前記バッキングが軟化した状態
のカーペットを所望の形状にプレス成形する工程と、成
形したカーペットの裏面に空洞層を付与する工程と、所
望の形状のキャビティを有する成形型に、前記空洞層を
付与したカーペットの裏面を前記キャビティに向けて配
し、型締めした後、前記キャビティ内に緩衝材となる原
料を投入して、前記カーペットの裏面に前記空洞層を介
して緩衝材層を一体的に成形する工程と、を有すること
を特徴とする。The present invention is also a method of manufacturing an interior material for floor laying on an automobile as described above, wherein a step of backing a thermoplastic resin on a back surface of the carpet, and heating the backed carpet from the back surface. Softening the backing, pressing the carpet with the backing softened into a desired shape, applying a cavity layer to the back of the formed carpet, and forming a cavity having a desired shape. In the mold, the back surface of the carpet provided with the cavity layer is arranged toward the cavity, and after clamping, a raw material serving as a buffer material is charged into the cavity, and the back surface of the carpet is interposed through the cavity layer. And forming the cushioning material layer integrally with each other.
【０００７】上記のとおりの発明では、カーペット層と
緩衝材層の間に空洞層を形成することにより、広範の周
波数域で防音性が向上する。その理由は以下による。In the invention as described above, the soundproofing in a wide frequency range is improved by forming the cavity layer between the carpet layer and the cushioning material layer. The reason is as follows.
【０００８】第１に、上記構成のとおりに空洞層を形成
したことにより、背後空気層を付加したモデルとなり、
図５に示すように周波数の低い側からの吸音率が良好で
ある。特に、単一の材料あるいは複数の異なる材料から
なる緩衝材層をカーペット層の裏面に付与したものと比
べて、吸音率が２００〜８００Ｈｚの周波数において優
れる。First, by forming a cavity layer as described above, a model having an air layer behind it is provided,
As shown in FIG. 5, the sound absorption coefficient from the low frequency side is good. In particular, the sound absorption coefficient is excellent at a frequency of 200 to 800 Hz, as compared with the case where a buffer material layer made of a single material or a plurality of different materials is provided on the back surface of the carpet layer.
【０００９】第２に、上記構成のとおりに空洞層を形成
したことにより、中空二重壁構造となるので、図６に示
すように単一の材料あるいは複数の異なる材料からなる
緩衝材層をカーペット層の裏面に付与したものと比べ
て、ある周波数域、特に７００Ｈｚ〜４ｋＨｚで透過損
失の量が向上する、つまり遮音性能が高くなる。Second, since the hollow layer is formed as described above to form a hollow double-walled structure, as shown in FIG. 6, a buffer material layer made of a single material or a plurality of different materials is used. Compared with the one provided on the back surface of the carpet layer, the amount of transmission loss is improved in a certain frequency range, particularly 700 Hz to 4 kHz, that is, the sound insulation performance is improved.
【００１０】第３に、上記構成のとおりに空洞層を形成
することにより、空気ばねを付加させた構造となり、介
在させる物質の固有振動数が小さい程、低周波数側から
の振動遮断が良好になることから、フェルトの固有振動
数４０〜２６０Ｈｚやウレタンの固有振動数１５０〜３
５０Ｈｚより小さい、４〜２０Ｈｚの固有振動数の空気
ばねによれば、振動伝達特性の減衰量が大きくなる為で
ある。Third, by forming a cavity layer as described above, a structure having an air spring is added. The lower the natural frequency of the substance to be interposed, the better the vibration isolation from the low frequency side. Therefore, the natural frequency of felt 40 to 260 Hz and the natural frequency of urethane 150 to 3
This is because, according to the air spring having a natural frequency of 4 to 20 Hz smaller than 50 Hz, the attenuation amount of the vibration transmission characteristic is increased.
【００１１】以上の事を総合的に評価すると、上記のよ
うな空洞層をカーペットと緩衝材層の間に介在させたこ
とにより、広範な周波数域において、防音性能が向上す
る。[0011] Comprehensively evaluating the above, the sound insulation performance is improved in a wide frequency range by interposing the above-described cavity layer between the carpet and the cushioning material layer.
【００１２】また、この自動車用フロア敷設内装材の製
造方法では、カーペットの裏面に緩衝材層を一体化する
工程と緩衝材の成形工程を統合することにより、カーペ
ット、空洞層、緩衝材をより少ない工程で積層一体化で
きる。Further, in this method of manufacturing an interior material for floor laying for an automobile, the step of integrating the cushioning material layer on the back surface of the carpet and the molding step of the cushioning material are integrated, so that the carpet, the cavity layer, and the cushioning material can be further improved. Lamination and integration can be performed in a small number of steps.
【００１３】[0013]
【発明の実施の形態】以下、本発明の好ましい実施の形
態について図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.
【００１４】図１は本発明による自動車用フロア敷設内
装材の一実施形態を示す断面図である。FIG. 1 is a sectional view showing an embodiment of an interior material for laying an automobile floor according to the present invention.
【００１５】この実施形態の自動車用フロア敷設内装材
は図１に示すように、自動車の凹凸のあるフロアパネル
１上に緩衝材層２、所望の領域全体にわたって存在する
実質からっぽの空洞層３、カーペット４を順に積層し一
体化させてなる。また、この内装材はカーペット４の裏
面にバッキング（裏打ち）５を施したものでも良い。As shown in FIG. 1, the interior material for car floor laying of this embodiment has a cushioning material layer 2 on an uneven floor panel 1 of a car, a substantially hollow cavity layer 3 existing over the entire desired area, The carpets 4 are sequentially laminated and integrated. The interior material may be a carpet 4 having a backing (backing) 5 on the back surface.
【００１６】緩衝材層２として本発明に最も適するの
は、ウレタン樹脂発泡体である。このウレタン樹脂発泡
体は、好ましい密度が０．０４〜０．１８ｇ／ｃｍ
3で、かつ高弾性で柔軟性のある軟質〜やや硬質のもの
で、注入発泡成形によってカーペットの裏面側に一体的
に形成されるものである。The most suitable cushioning material layer 2 in the present invention is a urethane resin foam. This urethane resin foam has a preferable density of 0.04 to 0.18 g / cm.
3, which is a soft to slightly hard material having high elasticity and flexibility, and is integrally formed on the rear surface side of the carpet by injection foaming molding.
【００１７】その緩衝材層２の形状は下面を敷設位置の
フロアパネル１に沿った形状にし、上面を平坦にする。
緩衝材層２の厚さは２〜２０ｍｍが適するが、最低でも
５ｍｍ以上あることが好ましい。The shape of the cushioning material layer 2 is such that the lower surface is shaped along the floor panel 1 at the laying position and the upper surface is flat.
The thickness of the buffer material layer 2 is suitably 2 to 20 mm, but is preferably at least 5 mm or more.
【００１８】ウレタン樹脂発泡体以外の緩衝材として好
ましいのは、低融点繊維を含んでなる合繊フェルトや、
樹脂バインダーを含浸してなるレジンフェルトである。Preferred as a cushioning material other than the urethane resin foam are synthetic felts containing low-melting fibers,
Resin felt impregnated with a resin binder.
【００１９】また、空洞層３として好ましいのは、２枚
の非通気性の樹脂フィルムの間に気体（例えば空気）を
閉じ込めたものであり、空洞層は複数の小部屋に区切ら
れていても良い。空洞層３の形成は、２枚の樹脂フィル
ム間をその端縁で相互に接着し、あるいは複数の小部屋
に区切る場合はフィルム面の内方の一部を相互に接着し
て、間に気体を閉じ込める。または、ブロー成形等によ
って内部を中空にした樹脂成形体による空洞層も好まし
い（図２参照）。The cavity layer 3 is preferably one in which a gas (for example, air) is confined between two impermeable resin films. Even if the cavity layer is divided into a plurality of small rooms, good. The cavity layer 3 is formed by adhering two resin films to each other at their edges or, when dividing into a plurality of small rooms, adhering a part of the inner surface of the film to each other and forming a gas between them. Confine. Alternatively, a hollow layer made of a resin molded body whose interior is hollowed by blow molding or the like is also preferable (see FIG. 2).
【００２０】その樹脂フィルムの素材はポリエチレン
や、ポリエチレン／接着層／ナイロン／接着層／ポリエ
チレンの積層体など、厚さ１０〜１００μｍが好まし
い。空洞層３の厚さは４ｍｍ以上あれば良い。また空洞
層３はカーペット４と緩衝材層２との間の接面全体にわ
たって介在させても、あるいは特定の防音性の向上に有
利な部位にのみ介在させても良い。The resin film is preferably made of polyethylene or a laminate of polyethylene / adhesive layer / nylon / adhesive layer / polyethylene and preferably has a thickness of 10 to 100 μm. The thickness of the cavity layer 3 may be 4 mm or more. Further, the cavity layer 3 may be interposed over the entire contact surface between the carpet 4 and the cushioning material layer 2 or may be interposed only in a portion that is advantageous in improving a specific soundproof property.
【００２１】空洞層は、カーペット上からの圧縮に対し
て、破裂または破損しない耐荷重が２０ｋｇｆ以上（φ
１０ｍｍ円圧縮）、ないし１００ｋｇｆ以上（φ１００
ｍｍ円圧縮）あるものが本発明に適する。これはカーペ
ット上をハイヒールで踏みつけるような局所的な高荷重
を想定した試験である。なお、耐荷重がこれ未満である
空洞層は、内部を実質空っぽにすることができず、充填
材、補強材を含んだり、または、空洞層を耐荷重のでる
まで小型化し、分割配置する必要がある。The hollow layer has a withstand load of not less than 20 kgf (φφ) which does not burst or break when compressed from the carpet.
10mm circle compression) or 100kgf or more (φ100
Some are suitable for the present invention. This is a test assuming a local high load such as stepping on a carpet with high heels. In addition, the hollow layer whose load capacity is less than this cannot be made substantially empty inside, and it is necessary to include fillers and reinforcing materials, or to reduce the size of the hollow layer until the load capacity can be obtained and arrange it separately. There is.
【００２２】本発明の場合、ブロー成形等によって内部
を中空に成形した樹脂成形体による空洞層では、この耐
荷重の条件を満たすが、非通気性の樹脂フィルムによる
空洞層では、この耐荷重の条件を満たせない場合もあ
る。その際は後述する補強シートを用いて荷重の集中を
避ける。In the case of the present invention, the load-bearing condition is satisfied in a hollow layer made of a resin molded body whose interior is hollowed by blow molding or the like, but the load-bearing condition is satisfied in a hollow layer made of an impermeable resin film. In some cases, the conditions cannot be met. In that case, the concentration of the load is avoided by using a reinforcing sheet described later.
【００２３】また、カーペット４はこの用途に公知の各
種のカーペットを用いることが可能である。すなわち、
基布に対してパイル糸をタフティングして立毛を形成し
たタフトカーペット（例えばループパイルカーペット、
カットパイルカーペットなど）や、繊維ウェブをニード
リングにより突き固めてなるニードルパンチカーペット
である（目付量２５０〜１０００ｇ／ｃｍ2）。As the carpet 4, various carpets known for this purpose can be used. That is,
Tufted carpet (for example, loop pile carpet,
Cutpile carpet) and a needle punch carpet obtained by compacting a fiber web by needling (weight per unit area: 250 to 1000 g / cm 2 ).
【００２４】バッキング５は、熱可塑性樹脂（例えば低
密度ポリエチレン樹脂、エチレン酢酸ビニル共重合樹脂
など）から成って、パイル糸を固定するとともに、カー
ペットに加熱成形性を付与する。The backing 5 is made of a thermoplastic resin (for example, a low-density polyethylene resin, an ethylene-vinyl acetate copolymer resin, etc.) and fixes pile yarns and imparts heat moldability to the carpet.
【００２５】また、カーペット４と空洞層３の間に、必
要に応じて、補強シートを配してもよい。これは、カー
ペット４の表側から局所的な高荷重が作用した場合に空
洞層３がその荷重を支えきれずに変形するのを防止する
ものである。この補強シートは厚さ０．５〜４ｍｍ、素
材はＰＶＣ（塩化ビニル樹脂の薄い板）、ハードボー
ド、ハードシート等が好ましい。Further, a reinforcing sheet may be provided between the carpet 4 and the cavity layer 3 if necessary. This prevents the cavity layer 3 from being deformed without being able to support the load when a local high load is applied from the front side of the carpet 4. The reinforcing sheet is preferably 0.5 to 4 mm in thickness, and the material is preferably PVC (a thin plate of vinyl chloride resin), a hard board, a hard sheet, or the like.
【００２６】次に、図１乃至４を参照し、本実施形態の
自動車用フロア敷設内装材の製造方法を説明する。図３
は本発明による自動車用フロア敷設内装材の製造方法の
一実施形態を表した工程図、図４は図１に示した緩衝材
層の成形の様子を表した断面図である。Next, with reference to FIGS. 1 to 4, a description will be given of a method of manufacturing an interior material for floor laying on an automobile according to the present embodiment. FIG.
FIG. 4 is a process diagram showing an embodiment of a method for manufacturing an interior material for floor laying on an automobile according to the present invention, and FIG.
【００２７】まず、カーペット４は裏面に熱可塑性樹脂
のバッキング５を施す（ステップＳ１）。このバッキン
グの施工は、例えばシート押出機によって熱可塑性樹脂
（例えば低密度ポリエチレン樹脂、エチレン酢酸ビニル
共重合樹脂など）を厚さ０．１〜５ｍｍのシート状に押
し出し、カーペットの裏面に重ね、熱可塑性樹脂の可塑
性を利用して、押圧積層する。First, a backing 5 of a thermoplastic resin is applied to the back of the carpet 4 (step S1). This backing is performed by, for example, extruding a thermoplastic resin (eg, a low-density polyethylene resin, an ethylene-vinyl acetate copolymer resin) into a sheet having a thickness of 0.1 to 5 mm by a sheet extruder, stacking the sheet on the back of the carpet, Press-lamination is performed using the plasticity of a plastic resin.
【００２８】次に、バッキング５を施したカーペット４
を、裏面から加熱してバッキング５を軟化させ、再び可
塑性のある状態におく（ステップＳ２）。Next, the carpet 4 with the backing 5
Is heated from the back surface to soften the backing 5 and put it in a plastic state again (step S2).
【００２９】この状態でカーペット４を、対のプレス成
形型間に配してプレス成形し、バッキング５を固化し
て、所要の形状とする（ステップＳ３）。In this state, the carpet 4 is arranged between the pair of press forming dies and press formed, and the backing 5 is solidified to have a required shape (step S3).
【００３０】成形したカーペット４をプレス成形型から
脱型して、裏面に空洞層３を付与する（ステップＳ
４）。この空洞層の付与は、接着材や粘着材などによる
のが好ましい。また、補強シートを用いる場合は、この
段階でカーペット４と空洞層３の間に付与する。The molded carpet 4 is released from the press mold, and the cavity layer 3 is provided on the back surface (step S).
4). This hollow layer is preferably provided by an adhesive or an adhesive. When a reinforcing sheet is used, it is provided between the carpet 4 and the cavity layer 3 at this stage.
【００３１】次いで、空洞層３を付与したカーペット４
を、緩衝材層２の成形型６内に配する（図４参照）。そ
の後、所要のキャビティをもって型締めされる型間に、
キャビティ６ａ内方にカーペット４の裏面を向けて配
し、型締めする。Next, the carpet 4 provided with the cavity layer 3
Is disposed in the mold 6 of the cushioning material layer 2 (see FIG. 4). Then, between the molds that are clamped with the required cavity,
The rear side of the carpet 4 is arranged inside the cavity 6a, and the mold is clamped.
【００３２】型締めに先だってもしくは型締め後に、キ
ャビティ６ａ内に緩衝材層２の原料を投入して、カーペ
ット４の裏面側に、カーペット４及び空気層３に一体的
な緩衝材層２を形成する。Prior to or after the mold clamping, the raw material of the cushioning material layer 2 is put into the cavity 6a, and the cushioning material layer 2 integrated with the carpet 4 and the air layer 3 is formed on the back side of the carpet 4. I do.
【００３３】緩衝材層２として最も本発明に適するのは
ウレタン樹脂発泡体であり、この場合は反応性の２液原
料を混合して直ちにキャビティ６ａ内に投入し、キャビ
ティ６ａ内で発泡反応を進めて緩衝材層を形成する。The urethane resin foam most suitable for the present invention as the buffer layer 2 is a foamed urethane resin. In this case, a reactive two-liquid raw material is mixed and immediately poured into the cavity 6a, and the foaming reaction is performed in the cavity 6a. Proceeding to form a buffer material layer.
【００３４】また緩衝材層２が繊維素材を原料とするも
のである場合は、低融点繊維やバインダーを混合して加
熱成形する。When the buffer material layer 2 is made of a fiber material, it is mixed with a low-melting fiber or a binder and heat-molded.
【００３５】なお、図２に示したようにブロー成形によ
り空洞層３ａを形成する場合は、あらかじめ別工程で成
形したブロー成形体を接着剤や粘着剤で付与する方法の
他に、上記と同様のステップＳ１〜Ｓ３までの工程を終
了した後、成形したカーペット４をプレス成形型から脱
型し、そのカーペット４を、緩衝材層２の成形型（不図
示）内に配する。その後、所要のキャビティをもって型
締めされる型間に、キャビティ内方にカーペット４の裏
面を向けて配し、型締めする。When the hollow layer 3a is formed by blow molding as shown in FIG. 2, a method similar to that described above may be used, in addition to a method of applying a blow molded body previously molded in a separate step with an adhesive or a pressure-sensitive adhesive. After the steps S1 to S3 are completed, the molded carpet 4 is removed from the press molding die, and the carpet 4 is placed in a molding die (not shown) of the cushioning material layer 2. After that, the rear surface of the carpet 4 is arranged inside the cavity between the molds to be clamped with a required cavity, and the mold is clamped.
【００３６】型締めに先だってもしくは型締め後に、キ
ャビティ６ａ内に緩衝材層２の原料を投入する。そし
て、カーペット４の裏面側と緩衝材層２の界面へガスを
高圧で送り込み、カーペット４の裏側に面する緩衝材層
２中に空気層３ａを形成する。Prior to or after the mold clamping, the raw material for the buffer layer 2 is charged into the cavity 6a. Then, gas is sent to the interface between the back side of the carpet 4 and the cushioning material layer 2 at high pressure to form an air layer 3 a in the cushioning material layer 2 facing the back side of the carpet 4.
【００３７】[0037]
【実施例】以下、本発明の一実施例の効果を、２つの比
較例について、吸音性、遮音性、振動遮断性の３
点から比較評価した。The effects of one embodiment of the present invention will be described below with reference to two comparative examples.
Comparative evaluation was performed from the point.
【００３８】本実施例のフロア敷設内装材の構成は、カ
ーペット（バッキングを付与してあっても良い）、空洞
層、緩衝材層より成り、実施例および、比較例の構成は
それぞれ表１に示すとおりである。The structure of the floor-laying interior material of the present embodiment is composed of a carpet (which may be provided with a backing), a hollow layer, and a cushioning material layer. It is shown.
【００３９】[0039]
【表１】 各例は内装材の構成からカーペットを除いた層の厚さを
２０ｍｍに統一し、実施例では上部の１０ｍｍを空洞層
に、下部の１０ｍｍをウレタン樹脂発泡体（２５％圧縮
荷重２２ｋｇｆ「ＡＳＴＭ−Ｄ３５７４Ｂ法」、密度
０．０７ｇ／ｃｍ 3の高弾性発泡体）による緩衝材層に
形成した。[Table 1]In each case, the thickness of the layer excluding the carpet from the composition of the interior material was
Unify to 20 mm, and in the example, the upper 10 mm is the cavity layer
The lower 10mm is urethane resin foam (25% compression
Load 22 kgf "ASTM-D3574B method", density
0.07g / cm ThreeHigh elastic foam)
Formed.
【００４０】比較例１では、２０ｍｍ全部を、前記の高
弾性ウレタン樹脂発泡体のみからなる緩衝材層に形成し
た。In Comparative Example 1, the entire 20 mm was formed in the cushioning material layer consisting of only the above-mentioned highly elastic urethane resin foam.
【００４１】比較例２では、２０ｍｍ全部を２層の異な
る材料からなる緩衝材層に形成した。すなわち、緩衝材
層の上部の１０ｍｍを前記の高弾性ウレタン樹脂発泡体
で、下部の１０ｍｍをポリエステル繊維フェルト（２５
％圧縮荷重８．７ｋｇｆ「ＡＳＴＭ−Ｄ３５７４Ｂ
法」、密度０．０１５ｇ／ｃｍ3）で形成した。In Comparative Example 2, the entire 20 mm was formed in the buffer material layer composed of two different materials. That is, the upper 10 mm of the cushioning material layer is made of the high elastic urethane resin foam, and the lower 10 mm is made of a polyester fiber felt (25 mm).
% Compression load 8.7 kgf "ASTM-D3574B
Method, density 0.015 g / cm 3 ).
【００４２】「評価方法」 吸音性：ＪＩＳ−Ａ−１４０５による垂直入射吸音率
測定によって評価する（音の入射方向はフロア敷設内装
材の緩衝材層側）。 遮音性：２つの無響室を向き合わせ、その隔壁に試料
を取り付け、一方の無響室の音源での出力を、他方の無
響室で集音し、出力と入力の比で評価する無響室−無響
室形の透過損失測定によって評価する。 振動遮断性：パネル加振法によって評価する。すなわ
ち、４００×５００ｍｍの鋼板上に試料を載置し、種々
の周波数の振動入力を与えた場合の、入力振動の加速度
Ｘ0と試料上での加速度Ｘ2の比で評価する。この場合、
値が小さいほど振動遮断性が優れる。[Evaluation Method] Sound absorption: Evaluated by measuring the normal incidence sound absorption coefficient according to JIS-A-1405 (the sound incident direction is on the cushioning material layer side of the floor-laying interior material). Sound insulation: Two anechoic chambers face each other, a sample is attached to the partition wall, and the output from the sound source in one anechoic chamber is collected in the other anechoic chamber, and the ratio of output to input is evaluated. Echo room-Evaluated by anechoic room transmission loss measurement. Vibration isolation: Evaluated by panel vibration method. That is, when a sample is placed on a steel plate of 400 × 500 mm and vibration inputs of various frequencies are given, the evaluation is made based on the ratio of the acceleration X 0 of the input vibration to the acceleration X 2 on the sample. in this case,
The smaller the value, the better the vibration isolation.
【００４３】「評価結果」本実施例のフロア敷設内装材
の吸音性の評価結果について図５のグラフに示した。こ
の図に示すように実施例は、比較例１や比較例２に比し
て、より低い周波数から吸音性が向上し、防音性に有利
である。[Evaluation Results] The evaluation results of the sound absorbing properties of the floor-laying interior material of this example are shown in the graph of FIG. As shown in this figure, the embodiment improves the sound absorption from a lower frequency as compared with the comparative examples 1 and 2, and is advantageous in the soundproofing.
【００４４】本実施例のフロア敷設内装材の遮音性の評
価結果について、図６のグラフに示した。この図に示す
ように実施例は、比較例１や比較例２に比して、共振周
波数がより低周波数側にシフトしている。その結果、７
００Ｈｚ〜４．５ｋＨｚの周波数域において、実施例は
遮音性能がまさる結果となった。FIG. 6 is a graph showing the results of evaluating the sound insulation of the floor-laying interior material according to the present embodiment. As shown in this figure, in the embodiment, the resonance frequency is shifted to a lower frequency side as compared with Comparative Examples 1 and 2. As a result, 7
In the frequency range of 00 Hz to 4.5 kHz, the example has a result that the sound insulation performance is superior.
【００４５】さらに、本実施例のフロア敷設内装材の振
動遮断性の評価結果について図７のグラフに示した。こ
の図において、５０〜２５０Ｈｚの領域では実施例と比
較例２が比較例１にまさり、２５０〜４５０Ｈｚの領域
では比較例２、実施例、比較例１の順で振動遮断性がま
さった。Further, the graph of FIG. 7 shows the evaluation results of the vibration shielding property of the floor-laying interior material of the present embodiment. In this figure, in the region of 50 to 250 Hz, the example and the comparative example 2 were superior to the comparative example 1, and in the region of 250 to 450 Hz, the vibration blocking properties were superior in the order of the comparative example 2, the example, and the comparative example 1.
【００４６】以上の評価結果を上記に示した表１にまと
めた。各評価項目を通じて評価がすぐれるのは実施例の
みである。The above evaluation results are summarized in Table 1 shown above. Only the examples have excellent evaluation through each evaluation item.
【００４７】[0047]
【発明の効果】以上説明したように、本発明は、カーペ
ットと緩衝材層の間に空洞層を、少なくとも所望の領域
全体にわたって介在させたことにより、空洞層を用いず
に単一の材料あるいは複数の異なる材料からなる緩衝材
層をカーペット層の裏面に付与したものと比べて、広範
な周波数域において、防音性能を向上させることができ
る。As described above, according to the present invention, the cavity layer is interposed between the carpet and the cushioning layer at least over the entire desired area, so that a single material or a single material can be used without using the cavity layer. The soundproofing performance can be improved in a wide frequency range as compared with a structure in which a buffer layer made of a plurality of different materials is provided on the back surface of the carpet layer.
【００４８】また、この自動車用フロア敷設内装材の製
造方法によれば、カーペットの裏面に緩衝材層を一体化
する工程と緩衝材の成形工程が統合されるので、カーペ
ット、空洞層、緩衝材をより少ない工程で積層一体化で
きる。Further, according to the method of manufacturing the interior material for floor laying for a car, the step of integrating the cushioning material layer on the back surface of the carpet and the step of forming the cushioning material are integrated, so that the carpet, the cavity layer, and the cushioning material are integrated. Can be laminated and integrated in fewer steps.
【図１】本発明による自動車用フロア敷設内装材の一実
施形態を示す断面図である。FIG. 1 is a cross-sectional view showing an embodiment of an interior material for laying an automobile floor according to the present invention.
【図２】本発明の一実施形態の空洞層をブロー成形で形
成したものを示す断面図である。FIG. 2 is a cross-sectional view showing a hollow layer formed by blow molding according to one embodiment of the present invention.
【図３】本発明による自動車用フロア敷設内装材の製造
方法の一実施形態を表した工程図である。FIG. 3 is a process diagram illustrating an embodiment of a method for manufacturing an interior material for floor laying on an automobile according to the present invention.
【図４】図１に示した緩衝材層の成形の様子を表した断
面図である。FIG. 4 is a cross-sectional view showing a state of forming the cushioning material layer shown in FIG.
【図５】本発明のフロア敷設内装材の一実施例における
吸音性の評価結果を示すグラフである。FIG. 5 is a graph showing an evaluation result of sound absorbing properties in one embodiment of the floor laying interior material of the present invention.
【図６】本発明のフロア敷設内装材の一実施例における
遮音性の評価結果を示すグラフである。FIG. 6 is a graph showing the results of evaluating sound insulation in an embodiment of the floor laying interior material of the present invention.
【図７】本発明のフロア敷設内装材の一実施例における
振動遮断性の評価結果を示すグラフである。FIG. 7 is a graph showing the results of evaluating the vibration isolation performance of one embodiment of the floor laying interior material of the present invention.
１ フロアパネル ２ 緩衝材層 ３，３ａ 空洞層 ４ カーペット ５ バッキング ６ 成形型 ６ａ キャビティ Ｓ１ バッキング工程 Ｓ２ 加熱工程 Ｓ３ プレス成形工程 Ｓ４ 空洞層付与工程 Ｓ５ 緩衝材層成形工程 Ｓ６ 脱型工程 DESCRIPTION OF SYMBOLS 1 Floor panel 2 Buffer layer 3, 3a hollow layer 4 Carpet 5 Backing 6 Mold 6a Cavity S1 Backing process S2 Heating process S3 Press forming process S4 Cavity layer applying process S5 Buffer material layer forming process S6 Demolding process
Claims (4)
途に敷設する自動車用フロア敷設内装材であって、 表面側のカーペットと裏面側の緩衝材層の間に空洞層
を、少なくとも所望の領域全体にわたって形成してなる
ことを特徴とする自動車用フロア敷設内装材。1. An interior material for automobile floor laying, which is laid on a floor panel of an automobile for decoration and soundproofing, wherein a hollow layer is provided between a carpet on the front side and a cushioning material layer on the rear side, at least in a desired region. An automobile floor laying interior material characterized by being formed over the entirety.
間に気体を容れて形成されていることを特徴とする請求
項１に記載の自動車用フロア敷設内装材。2. The interior material according to claim 1, wherein the cavity layer is formed by containing a gas between non-permeable resin films.
シートが形成された請求項１又は２に記載の自動車用フ
ロア敷設内装材。3. The interior material according to claim 1, wherein a reinforcing sheet is formed between the carpet and the hollow layer.
敷設内装材の製造方法であって、 カーペットの裏面に熱可塑性樹脂のバッキングを施す工
程と、 前記バッキングを施したカーペットを、裏面から加熱し
て前記バッキングを軟化させる工程と、 前記バッキングが軟化した状態のカーペットを所望の形
状にプレス成形する工程と、 成形したカーペットの裏面に空洞層を付与する工程と、 所望の形状のキャビティを有する成形型に、前記空洞層
を付与したカーペットの裏面を前記キャビティに向けて
配し、型締めした後、前記キャビティ内に緩衝材となる
原料を投入して、前記カーペットの裏面に前記空洞層を
介して緩衝材層を一体的に成形する工程と、を有するこ
とを特徴とする自動車用フロア敷設内装材の製造方法。4. The method of manufacturing an automobile floor laying interior material according to claim 1, wherein a backing of a thermoplastic resin is performed on a back surface of the carpet, and the backed carpet is removed from the back surface. Heating to soften the backing; pressing the carpet with the softened backing into a desired shape; applying a cavity layer to the rear surface of the formed carpet; and forming a cavity having a desired shape. After placing the back surface of the carpet provided with the cavity layer toward the cavity and clamping the mold, a raw material serving as a buffer material is charged into the cavity, and the cavity layer is provided on the back surface of the carpet. And forming a cushioning material layer integrally through the step (a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34766596A JP3813279B2 (en) | 1996-12-26 | 1996-12-26 | Automotive floor laying interior material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34766596A JP3813279B2 (en) | 1996-12-26 | 1996-12-26 | Automotive floor laying interior material and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10181468A true JPH10181468A (en) | 1998-07-07 |
| JP3813279B2 JP3813279B2 (en) | 2006-08-23 |
Family
ID=18391763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34766596A Expired - Lifetime JP3813279B2 (en) | 1996-12-26 | 1996-12-26 | Automotive floor laying interior material and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3813279B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008508139A (en) * | 2004-08-04 | 2008-03-21 | ダイムラー・アクチェンゲゼルシャフト | Sound insulation for automobile passenger compartment |
| EP1964666A1 (en) * | 2005-12-15 | 2008-09-03 | Hayashi Engineering Inc. | Forming-laid interior material for automobile |
| US7631711B2 (en) | 2007-04-18 | 2009-12-15 | Toyota Jidosha Kabushiki Kaisha | Cooling device for electric apparatus mounted on vehicle |
| CN109747510A (en) * | 2019-01-31 | 2019-05-14 | 宁波市阳光汽车配件有限公司 | Using thermoplastic material hollow molding luggage case level land blanket and process units and method |
-
1996
- 1996-12-26 JP JP34766596A patent/JP3813279B2/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008508139A (en) * | 2004-08-04 | 2008-03-21 | ダイムラー・アクチェンゲゼルシャフト | Sound insulation for automobile passenger compartment |
| EP1964666A1 (en) * | 2005-12-15 | 2008-09-03 | Hayashi Engineering Inc. | Forming-laid interior material for automobile |
| EP1964666A4 (en) * | 2005-12-15 | 2012-04-04 | Hayashi Engineering Inc | Forming-laid interior material for automobile |
| US8758875B2 (en) | 2005-12-15 | 2014-06-24 | Hayashi Engineering Inc. | Formable laid interior decoration material for automobile |
| US7631711B2 (en) | 2007-04-18 | 2009-12-15 | Toyota Jidosha Kabushiki Kaisha | Cooling device for electric apparatus mounted on vehicle |
| CN109747510A (en) * | 2019-01-31 | 2019-05-14 | 宁波市阳光汽车配件有限公司 | Using thermoplastic material hollow molding luggage case level land blanket and process units and method |
| CN109747510B (en) * | 2019-01-31 | 2023-04-28 | 宁波市阳光汽车配件有限公司 | Hollow formed luggage case flat carpet made of thermoplastic material and production device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3813279B2 (en) | 2006-08-23 |
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