JP2014516818A - 成形された多層ライニングのための製造方法 - Google Patents
成形された多層ライニングのための製造方法 Download PDFInfo
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- JP2014516818A JP2014516818A JP2014500323A JP2014500323A JP2014516818A JP 2014516818 A JP2014516818 A JP 2014516818A JP 2014500323 A JP2014500323 A JP 2014500323A JP 2014500323 A JP2014500323 A JP 2014500323A JP 2014516818 A JP2014516818 A JP 2014516818A
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- JP
- Japan
- Prior art keywords
- layer
- fiber
- fibers
- foam
- polyamide
- Prior art date
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- Granted
Links
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Abstract
第1の混合されたウェブと、連続気泡フォーム層、熱反射層、又は別の前記混合されたウェブ、から選択された少なくとも1つの付加的な層とを、金型内に積層するステップと
混合されたウェブにおけるポリアミドマトリックス材料が、DSCによるポリアミドマトリックスの融解温度よりも低い、蒸気圧力下での温度において融解させられ、これにより、強化繊維を結合し、これにより、混合されたウェブを固化させ、多孔質強化層を形成するように、及び多層の全ての層が積層されるように、積み重ねられた多層材料を加圧飽和蒸気で処理するステップとを含む、断熱及び防音のための多層ライニングのための製造方法。
Description
本発明は、特に自動車のエンジン室用の、断熱及び遮音用の成形された多層ライニングを製造する方法に関する。
自動車に適用するための音響用及び熱用ライナが技術分野において公知である。これらのライナは、通常、音響減衰を提供するために、吸音、すなわち入射する音波を吸収する能力と、透過損失、すなわち入射する音波を反射する能力との両方に依存する。ライナは、様々な熱源(エンジン、トランスミッション及び排気系)から車両の乗員室への熱の伝達を防止又は低減するための遮熱特性にも依存する。このようなライナは特に、車両のエンジンベイ領域において使用され、例えばその発生源により近いエンジンの音を減衰させるためにエンジンカバーとして使用される。
したがって、本発明の課題は、より軽量で、使用領域において長期間にわたり熱負荷に曝される構造をそこで維持する、特に、同等の断熱及び防音特性を有する車両のエンジン室のための、成形された多層ライニングを製造する方法を提供することである。
・強化繊維と、繊維、薄片又は粉末の形態のポリアミドマトリックス材料とを混合し、前記混合物のウェブを形成するステップと、
・前記混合されたウェブのうちの第1のものと、連続気泡フォーム層、熱反射層、又は別の前記混合されたウェブのうちの第2のものから選択された少なくとも1つの付加的な層とを、金型内に積層するステップと、
・混合されたウェブにおけるポリアミドマトリックス材料が、DSCによるポリアミドマトリックスの融解温度よりも低い、蒸気圧力下での温度において融解させられ、これにより、強化繊維を結合し、ひいては、混合されたウェブを一体化して、多孔質強化層を形成するように、及び多層の全ての層が積層結合されるように、積層された多層材料を加圧飽和蒸気で処理するステップとを含む、本発明による製造方法を使用することによる。
本発明による方法において、高弾性率強化繊維が、ポリアミド繊維、薄片又は粉末の形態のマトリックス形成材料と混合され、これにより、エアレイ、ウェットレイ、カーディング等のあらゆる適切な方法によってウェブを形成する。次いで、このウェブは、ISO11357−3による示差走査熱量測定(DSC)を使用して測定されたポリマの融解温度よりも低い温度においてポリアミドマトリックス材料を融解させるために、飽和蒸気を使用して加熱される。例えば、ポリアミド6(PA−6)の融解温度Tmは、DSCを使用して測定されると220℃である。しかしながら、本発明による蒸気圧力下における同じPA6の融解温度は、例えば、190℃である。
多孔質強化層は、熱可塑性結合材の実質的に離散的な小滴によって繊維交差位置において結合された、無作為に配置された結合材及び強化繊維から成る、増大した剛性を備える通気性複合材である。
・ガラス繊維、玄武岩繊維又は炭素繊維等の鉱物ベース繊維、及び/又は
・ポリエステル繊維等の、蒸気圧力下におけるポリアミドの融解温度よりも高い、DSCに従って測定された融解温度を有する化学繊維、及び/又は
・亜麻、ココナツ又はケナフ繊維等の天然繊維であることができる。
音響的強化層は、吸音特性が高められた強化層の嵩高のバージョンである。
繊維多孔質強化層とともに少なくとも1つの熱反射層を使用することができる。熱源、概してエンジン又は動力伝達機構の部分又は排気ラインに面した表面、又は日光に曝される表面は、部分的に又は完全に、少なくとも高い熱負荷の領域において熱反射性カバー層によってカバーされてよい。反射性カバー層は、熱安定性でかつ、トリム部の良好な断熱を得るために、熱源又は太陽からの赤外放射を反射し得るべきであり、好適には反射性カバー層は、金属箔層、好適にはステンレス鋼層又はアルミニウム箔層、又はアルミニウム蒸着された織物又は不織布、又はアルミニウム繊維から形成された織物のうちの1つである。熱反射層は、少なくとも劣化なしに蒸気処理に耐え得るべきである。
付加的な層として連続気泡フォーム層を使用することができる。フォームは好適にはスキンレスフォームである。連続的に又は断続的に製造されるスラブフォームが最も好ましい。なぜならば、このフォームは、発泡及び硬化の後にシートに切断されるので、連続気泡構造が、スキンを一切有することなく直接にアクセス可能となるからである。
好適には付加的な層を使用することができる。例えば、積層されたライニングが金型の壁部に付着することを防止するために、美観カバー、若しくは付着防止層が必要とされる場合がある。好適には、蒸気成形中に生じるような温度範囲に対して耐熱性の、熱可塑性繊維材料から形成されたスクリム層が使用される。
本発明により製造された蒸気成形された多層ライニングは、多孔質強化層と、フォーム層、反射層又は第2の多孔質強化層から選択された少なくとも1つの第2の層とを含む。
下側金型半部2及び上側金型半部1を有する蒸気金型を示す図1を使用して、製造プロセスがより詳細に説明される。これらの2つの金型半部は共に金型キャビティを形成し、この金型キャビティにおいて、半完成品が少なくとも一体化させられる。金型キャビティを、最終的なトリム部材の所望の三次元形状に形成することができる。半完成品として、例えばフォーム層11とともに、結合材と強化繊維との混合物10を備える不織布繊維マットが提供される。好適には、金型の2つの半部は、入口7及び出口8を有し、入口7から飽和蒸気が金型キャビティに流入することができ、飽和蒸気は多層材料と直接接触し、多層材料は一体化及び積層させられる。飽和蒸気が使用される場合には、圧力が生じるのを補助して蒸気凝縮を防止するために金型半部が保温されることが好ましい。蒸気凝縮は、熱エネルギの損失を生じ、また、製品を水に浸す。図面にはチャネル3,4,5及び6によってこのことが示されており、金型半部のための閉じた加熱系を示している。金型半部の熱は、ライニングの成形にとって重要ではない。
・40〜80%の強化繊維と、20〜60%の、繊維、薄片又は粉末の形態のポリアミドマトリックス材料とを混合し、前記混合物のウェブを形成するステップ;
・第1の混合されたウェブと、連続気泡フォーム層、熱反射層、又は強化繊維とポリアミドマトリックス材料とから成る第2の混合されたウェブ、から選択された少なくとも1つの付加的な層とを、2つの金型半部から成る金型内に積層するステップ;
・混合されたウェブにおけるポリアミドマトリックス材料が、DSCによるポリアミドマトリックスの融解温度よりも低い、蒸気圧力下での温度において融解させられ、これにより、強化繊維を結合し、これにより、混合されたウェブを固化させ、多孔質強化層を形成するように、及び積み重ねられた層が積層結合されるように、積み重ねられた多層材料を加圧飽和蒸気で処理するステップ;
を少なくとも含む。
Claims (13)
- 断熱及び防音のための多層ライニングのための製造方法であって、
強化繊維と、繊維、薄片又は粉末の形態のポリアミドマトリックス材料とを混合し、前記混合物のウェブを形成するステップと、
混合された前記ウェブと、連続気泡フォーム層、熱反射層、又は別の前記混合されたウェブ、から選択された少なくとも1つの付加的な層とを、金型内に積層するステップと、
前記混合されたウェブにおけるポリアミドマトリックス材料が、DSCによるポリアミドマトリックスの融解温度よりも低い、蒸気圧力下での温度において融解させられ、これにより、強化繊維を結合し、ひいては、混合されたウェブを一体化して、多孔質強化層を形成するように、及び多層の全ての層が積層結合されるように、積層された多層材料を加圧飽和蒸気で処理するステップとを含むことを特徴とする、断熱及び防音のための多層ライニングのための製造方法。 - 前記混合されたウェブにおける強化繊維は、約40〜80質量%であり、ポリアミドマトリックス材料は20〜60質量%である、請求項1記載の多層ライニングのための製造方法。
- 前記金型における飽和蒸気は、9〜20bar絶対圧の範囲で加圧されている、請求項1又は2記載の多層ライニングのための製造方法。
- 少なくとも1つの付加的なスクリム層が使用される、請求項1から3までのいずれか1項記載の多層ライニングのための製造方法。
- 積層された多層は、前記混合されたウェブ、フォーム層、又は熱反射層の付加的な層をさらに含む、請求項1から4までのいずれか1項記載の多層ライニングのための製造方法。
- 前記熱反射層は、隣接する層を部分的にのみカバーしている、請求項1から5までのいずれか1項記載の製造方法。
- 前記強化繊維は、ガラス繊維、玄武岩繊維又は炭素繊維等の鉱物ベース繊維、及び/又はポリエステル繊維等の、蒸気圧力下におけるポリアミドの融解温度よりも高い、DSCに従って測定された融解温度を有する化学繊維、及び/又は亜麻、ココナツ繊維又はケナフ繊維等の天然繊維である、請求項1から6までのいずれか1項記載の多層ライニングのための製造方法。
- 前記強化繊維は、ガラス繊維、玄武岩繊維又は炭素繊維等の鉱物ベース繊維と、ポリエステル繊維等の、蒸気圧力下におけるポリアミドの融解温度よりも高い、DSCに従って測定された融解温度を有する化学繊維、又は亜麻、ココナツ繊維又はケナフ繊維等の天然繊維との混合物である、請求項1から7までのいずれか1項記載の多層ライニングのための製造方法。
- 前記強化層を形成する強化繊維は、約20〜40質量%のポリアミド、約20〜50質量%のガラス繊維、及び20〜50質量%のポリエステル及び/又は天然繊維の混合物である、請求項1から8までのいずれか1項記載の多層ライニングのための製造方法。
- ポリアミドマトリックスは、ポリアミド6、ポリアミド6.6、コポリアミド、又は様々なタイプのポリアミドの混合物である、請求項1から9までのいずれか1項記載の多層ライニングのための製造方法。
- 前記連続気泡フォームは、スキンレスフォーム、好適にはスラブフォームである、請求項1から10までのいずれか1項記載の多層ライニングのための製造方法。
- 前記フォームは、ポリウレタン(PUR)フォーム、ポリエステル(PET)フォーム、又は繊維が充填されたフォームである、請求項1から11までのいずれか1項記載の多層ライニングのための製造方法。
- 蒸気成形された多孔質の多層ライニングは、エンジンベイカバーパネル、エンジン用のトップカバー、サイドカバー又はアンダーカバー、オイルパンカバー、アンダーエンジンシールド、防火壁、少なくとも部分的にカバーする外側ダッシュパネル、エンジンベイのクーラーの背後の空気案内パネル、荷物棚又はトランク積載フロアなどの、高い熱負荷の領域における自動車トリム部材として適合するように三次元形状に成形される、請求項1から12までのいずれか1項記載の多層ライニングのための製造方法。
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- 2012-03-13 US US14/006,253 patent/US9505178B2/en active Active
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JP2016504209A (ja) * | 2012-11-06 | 2016-02-12 | 現代自動車株式会社Hyundaimotor Company | 高耐熱吸遮音材の成形方法 |
KR102294294B1 (ko) * | 2020-11-17 | 2021-08-27 | 엔브이에이치코리아(주) | 자동차용 흡음재의 성형방법 |
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Also Published As
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KR101650343B1 (ko) | 2016-08-23 |
ZA201307114B (en) | 2014-05-28 |
CA2828677A1 (en) | 2012-09-27 |
CN103459204B (zh) | 2016-04-20 |
US20140124972A1 (en) | 2014-05-08 |
ES2467933T3 (es) | 2014-06-13 |
JP6001634B2 (ja) | 2016-10-05 |
CN103459204A (zh) | 2013-12-18 |
RU2013147152A (ru) | 2015-04-27 |
US9505178B2 (en) | 2016-11-29 |
KR20140015484A (ko) | 2014-02-06 |
MY168683A (en) | 2018-11-29 |
AR085546A1 (es) | 2013-10-09 |
EP2688770A1 (en) | 2014-01-29 |
RU2582503C2 (ru) | 2016-04-27 |
EP2502788A1 (en) | 2012-09-26 |
PL2502788T3 (pl) | 2014-08-29 |
WO2012126775A1 (en) | 2012-09-27 |
BR112013023257B8 (pt) | 2021-06-15 |
EP2502788B1 (en) | 2014-03-12 |
BR112013023257B1 (pt) | 2020-12-15 |
BR112013023257A2 (pt) | 2016-12-20 |
MX2013010782A (es) | 2014-01-16 |
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