JP2004338169A - Heat insulating cloth laminate - Google Patents

Heat insulating cloth laminate Download PDF

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Publication number
JP2004338169A
JP2004338169A JP2003135863A JP2003135863A JP2004338169A JP 2004338169 A JP2004338169 A JP 2004338169A JP 2003135863 A JP2003135863 A JP 2003135863A JP 2003135863 A JP2003135863 A JP 2003135863A JP 2004338169 A JP2004338169 A JP 2004338169A
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JP
Japan
Prior art keywords
heat
fabric
metal layer
laminate
batting
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.)
Pending
Application number
JP2003135863A
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Japanese (ja)
Inventor
Sukehiro Nishida
右広 西田
Takumi Minagawa
卓己 皆川
Nobukazu Inagaki
信和 稲垣
Kimiko Kawai
貴美子 河合
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Toyobo Co Ltd
Original Assignee
Toyobo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to JP2003135863A priority Critical patent/JP2004338169A/en
Publication of JP2004338169A publication Critical patent/JP2004338169A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight heat insulating cloth laminate having a heat reflecting effect and the effect of a heat insulating air layer suitable for use in a bedding/living material such as a coverlet, a coverlet for a Kotatsu, a robe and the like or clothing such as a down-jacket or the like and capable of being housed compactly. <P>SOLUTION: In the heat insulating cloth laminate constituted by combining synthetic fiber cloth having a metal layer arranged on at least one side thereof and fiber cloth on which a cotton pad and the metal layer are not arranged, the synthetic fiber cloth having a metal layer arranged thereon forms cover cloth, and the surface metal layer, the cotton pad and the fiber cloth, on which the cotton pad and the metal layer are not arranged, are substantially bonded. The thickness of this laminate is 5-25 mm. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は保温性布帛積層体に関し、更に詳しくは、掛け布団、こたつ布団、膝掛け等の寝装・生活資材用途、若しくはダウンジャケットなど衣料用途に好適な保温性布帛積層体に関する。
【0002】
【従来の技術】
従来から綿、ウール、ポリエステル等の中綿を用いた布帛積層体が広く寝装用途、生活資材用途、衣料用途に用いられている。しかしながら適度の保温性を得るには中綿の量を多くして断熱空気層の厚さを大きく保つ必要があり、嵩高くて取扱難く、しかも重量感のあるものにしかならず、押入れなどの収納スペース占有面積が大きくなるなどの問題を抱えていた。
【0003】
また、熱反射性物質を含有若しくは付着させた糸を織成してなる布を側生地とした保温性に優れた布団が提案されている(例えば、特許文献1参照。)。熱反射性物質によって肌面から放出された熱エネルギーが反射され、適度な保温特性を有するが、断熱空気層の厚さなど中綿として必要な要件の限定がなく、反射された熱エネルギーは効率よく保温に利用されていない可能性があった。
【0004】
上記、断熱空気層の厚さを大きくすることによって保温性を向上させることが可能であるが、同時に嵩高く、コンパクト性に欠け取扱難くなる他、反射された熱エネルギーが断熱空気層自体の昇温、保温に大量に消費されてしまうために人体表面の保温効率が悪くなってしまうのである。
【0005】
【特許文献1】
特開平2−41116号公報(特許請求の範囲など)
【0006】
【発明が解決しようとする課題】
本発明は前記のような課題を解決しようとするものであって、金属層を配した布帛、中綿不織布、金属層を配さない布帛の積層体として、金属層による熱反射効果と中綿不織布の断熱空気層の効果を効率よく利用することによって、軽量かつコンパクトに収納可能な保温性布帛積層体の提供を課題とするものである。
【0007】
【課題を解決するための手段】
すなわち、本発明は以下の構成よりなる。
1.少なくとも片面に金属層を配してなる合成繊維布帛、中綿、金属層を配しない繊維布帛が組み合わされてなる布帛積層体であって、該金属層を配してなる合成繊維布帛が表地を形成し、表地金属層と中綿、及び中綿と金属層を配しない繊維布帛が実質的に接着されてなり、該積層体の厚さが5mm以上25mm以下であることを特徴とする保温性布帛積層体。
2.中綿が不織布形態のシート状物でありJIS L−1097による比容積が80cm/g以上200cm/g以下であり、中綿を排除した状態で金属層を配してなる合成繊維布帛のみをA.S.T.M.型試験機を用いて評価した場合の保温率Qが40%以上となる空間厚さになるように中綿の厚さを調整したことを特徴とする上記第1記載の保温性布帛積層体。
3.少なくとも片面に金属層を配してなる合成繊維布帛が、ポリエステル系繊維を用いてなるものであって、該金属層がチタン、亜鉛、錫、アルミニウム、ジルコニウム、マグネシウムの酸化物、炭化物、窒化物から選択される少なくとも1種類から構成されることを特徴とする上記第1又は第2に記載の保温性布帛積層体。
4.中綿に用いる不織布形態のシート状物が、天然繊維及び/又は合成繊維から選択される少なくとも1種類の繊維を使用してなるものであり、実質的に表地、裏地の少なくとも一方に接着剤によってドット状に接着されてなることを特徴とする上記第1〜第3のいずれかに記載の保温性布帛積層体。
【0008】
【発明の実施の形態】
本発明の保温性布帛積層体は、熱輻射性能を有する金属薄膜と肌面との距離を輻射エネルギーが有効に作用する位置に中綿の厚さでコントロールし、中綿による断熱空気層の保温効果と上記金属薄膜による輻射熱の相乗効果により適度な保温性を付与するものであり、金属薄膜の輻射効果により中綿の量を少なく抑えることが出来、取扱性に優れた布帛積層体を得ることを可能としたものである。
【0009】
本発明の保温性布帛積層体の表地である合成繊維布帛の内側には、金属薄膜を形成されている。具体的にはチタン、亜鉛、錫、アルミニウム、ジルコニウム、マグネシウムの酸化物、炭化物、窒化物から選択される少なくとも1種類のセラミックスの薄膜を繊維基材表面に形成させてなるものである。セラミックス薄膜形成方法としてはスパッタリング法、真空蒸着法、イオンプレーティング法、無電解金属鍍金法、直接コーティング法、ラミネート法、等多くの技術が提案されている。取分けスパッタリング法が洗濯耐久性等の性能に優れ、剥離し難く、風合い硬化等が伴わないため好適に使用される。
【0010】
本発明の保温性布帛積層体に用いる少なくとも片面に金属層を配してなる合成繊維布帛、即ち積層体の表地は基材としてポリエステル、ポリオレフィン、ポリアミド等の熱可塑性合成繊維の長繊維束及び/又はその紡績糸が好適に採用される。取分けポリエステル系合成繊維は公定水分率が低く留まる為、スパッタリング法を用いる場合には有効である。また金属層を配さない繊維布帛、即ち積層体の裏地で肌側面を構成する布帛は上記合成繊維の長繊維束や紡績糸の他、綿やレーヨン、ポリノジック等の天然繊維、再生繊維、半合成繊維の紡績糸、混紡糸等を用いたものであってもよく、交織生地や交編生地であってもよい。尚、本発明でいう布帛とは織物、編物その他二次元構造物を指すものである。
【0011】
中綿はウールに代表される獣毛天然繊維や綿などに代表される植物天然繊維系の他、ポリエステルやポリオレフィンなど合成繊維系の何れも使用することが出来る。形態としては不織布形態とし繊維をある程度配向させ、厚みや目付を調整したものがより望ましく、洗濯等の揉み効果付与による繊維の偏りを防止するため、ニードルパンチやウォータージェットパンチ等々により適度に繊維を絡合させておくことが更に好ましい。また上記の短繊維不織布以外では主に可塑性合成繊維等を使用したスパンボンド不織布やフラッシュ紡糸不織布、メルトブロー不織布等も中綿として使用することが出来る。更に取扱性の観点からは不織布と積層する布帛とを接着樹脂によりドット状に点接着せしめ生地と中綿のズレを防止することが特に好ましい。接着樹脂のドット密度に関しては不織布を構成する繊維や繊維布帛との接着性、不織布の目付等に応じて適宜調整することが出来る。
【0012】
中綿となる不織布としてはポリエステル系やポリオレフィン系、ポリアクリロ二トリル系、ポリビニルアルコール系などの合成繊維や綿、ウールなどの天然繊維の単一素材、若しくはそれらの複合素材が挙げられる。目付は20g/m以上150g/m以下、より好ましくは25g/m以上100g/m以下が好ましい。目付が20g/m以下の薄引きの場合は厚さを均一に制御することが困難で、部分的に孔空き箇所が生じ易く、あまり好ましくない。また150g/mを超過する場合は繊維間の絡合性を強化せねば層間剥離が発生し易くなり、あまり好ましくない。また布帛積層物自体の重量が非常に重いものになってしまい寝具用途としてはあまり望ましくない。合成繊維を使用する場合は中綿不織布のヘタリを軽減させる為、中空断面や異型断面を採用して断面二次モーメントを大きくし、繊維自体を曲げ難いものにすることが好ましく、更には適度なクリンプを有する繊維が好ましい。また必要に応じて公知の方法による防ダニ、抗菌、消臭、吸湿加工等々の機能加工を付与することが出来る。
【0013】
他の金属層を配しない繊維布帛は実質的に肌側面を形成する部分であるが、該繊維布帛についても中綿不織布とのズレを防止するために接着樹脂等による点接着を施しておくことが好ましい。使用する接着樹脂に関してはポリエステル系等のホットメルトタイプの使用が好ましく、溶剤系接着樹脂では揮発性有機溶剤等によるシックハウス症候群等の要因になることも懸念され好ましいものではない。該肌側面を形成する繊維布帛についても公知の方法による抗菌、消臭、その他機能加工を必要に応じて施すことが出来る。
【0014】
金属層を配してなる合成繊維布帛及び金属層を配しない繊維布帛は公知の染法によって染色を施される。金属層薄膜の剥離抑制や工程の汚染防止のため基材となる合成繊維布帛、即ち積層体の表地となる布帛については金属層形成前の時点で撥水剤や界面活性剤等を処方しないことが好ましい。金属層を形成させた後に公知の方法による抗菌、消臭、その他の機能加工を必要に応じて施すことが出来るし、金属層を形成させる以前の生地に吸尽法例えば染色と同時吸尽による抗菌、消臭、防かび、防ダニ等々の機能加工を施すことも好ましい。
【0015】
金属層を配してなる合成繊維布帛である表地と、金属層を配しない繊維布帛である肌に接触する裏地については、織物、編物、その他二次元構造物であれば使用出来るが、意匠性や審美性の観点から表地は織物、裏地は織物またはトリコット経編地などの編物が好ましく使用される。更に表地は長繊維束の使用が光沢感など審美性の観点から好適であり、裏地は接触温冷感を考慮し表面に毛羽を有する、短繊維紡績糸若しくは長短複合紡績糸の使用が好適である。
【0016】
金属層の膜厚に関しては1〜1000nmが好ましく、より好ましくは5〜500nmの範囲が肌面から放射される熱エネルギーの反射性能を考慮すると好適な範囲である。膜厚1nm未満の薄膜では耐久性に乏しく、十分な熱エネルギー放射性能が期待しにくく好ましくない。また膜厚1000nmを超過する範囲では十分な熱エネルギー放射性能が得られるものの高コストなものとなり経済的でないのであまり好ましくない。
【0017】
本発明の布帛積層体の保温機構は表地の裏面に存在する金属層によって体温の熱エネルギーを反射して放熱を防ぎ、中綿による断熱空気層の厚さを適性厚さに調整することによって、肌面が受ける熱反射エネルギーをより大きくすると共に、更には中綿素材の保温効果との相互作用により保温効果の向上を狙ったものである。断熱空気層の効果は保温性を考える上で非常に重要なファクターであり、断熱空気層の厚さを大きくすることにより保温性は向上するが、同時に重く、嵩高いものとなってしまい取扱性が悪くなる傾向がある。本発明では上記を鑑み、しかも金属層により熱エネルギーが放射される効果が相乗効果となって現れる、最も適性なる断熱空気層厚さを見極めたものである。
【0018】
本発明の保温性布帛積層体に使用する中綿は不織布形態のシート状物であってJIS L−1097による比容積が80cm/g以上200cm/g以下、更には80cm/g以上150cm/g以下が好適である。該比容積が80cm/g未満の範囲ではハード不織布と成り過ぎてしまい折畳み難く成る他、断熱空気層のいわゆるデッドエアー量が少なくなり保温性の観点からも好ましくない。また200cm/gを超過する範囲では超ソフト不織布となり、折畳み性能も良好であり断熱空気層のデッドエアー量も十分であり保温性にも優れたものとなるが、不織布の層間剥離が生じやすくなる他、ヘタリが生じやすくなり積層体としての形態保持性能が損なわれやすく、あまり好ましくない。
【0019】
また、断熱空気層の厚さは中綿を排除した状態で金属層を配してなる合成繊維布帛のみをA.S.T.M.型試験機を用いて評価した場合の保温率Qが40%以上となる空間厚さを求めて中綿厚さを調整するものである。保温率Qがより大きくなる方が好ましい方向であり、40%未満の範囲では熱反射エネルギーが小さく留まり、保温性が不十分となりやすく好ましくない。より好ましい保温率としては45%以上、更に好ましくは50%以上である。保温率Qは高いほど好ましいと言えるが、通常、上限は95%程度までである。
【0020】
【実施例】
以下、実施例により本発明を更に詳しく説明するが、本発明は下記の実施例に限定されるものではない。また、本文及び実施例中の特性値は下記の測定法によって導出されたものである。
【0021】
(保温性試験)
A.S.T.M.型試験機を使用して実施した。産熱体表面温度を36℃に保持し、スパッタリング布帛をスパッタ面が産熱体と相対する向きに設置し、スペーサを用いて産熱体と試験片の空間体積を変更し、一定時間内に試験片を通過して放散される熱損失(放熱量)を求め、これと試験板上に試験片のないブランクの状態で放散される熱損失とを測定し、両者の差を採ってclo値(真のclo値)を求めた。
【0022】
また保温率は下記式に基づき算出した。
保温率Q(%)={1−(b/a)}×100
ここでQは保温率(%)、aは試験片未設置の状態(ブランク)の放熱量、bは試験片を設置した状態の放熱量である。尚、それぞれの放熱量は消費電力積算時間から放熱量(J)に換算して算出されるものである。
【0023】
(比容積)
1982年版JIS L−1097に準じて評価した。
【0024】
(実施例1)
ポリエチレンテレフタレートセミダル丸断面78デシテックス216フィラメントを用い、三菱重工業社製LS−6型仮撚機を使用してファーストヒーター温度210℃、セカンドヒーター温度が室温、スピンドル回転数360,000rpm、撚数がZ→S方向に3,400回/m、使用スピナーが阿波スピンドル社製2.0mmφ偏芯サファイアピンの各条件で仮撚加工を施した。該仮撚加工糸を織物の経糸、緯糸に用い、ウォータージェットルームで経緯密度がそれぞれ138本/2.54cm、104本/2.54cmの平織に製織した。
【0025】
引き続き、得られた生機をオープンソーパー、液流精練機を用いた精練、リラックスを施し、ピンテンターで雰囲気温度190℃のプレセットを施した。その後、生地裏面にプラストカレンダー処理を施し、生地表面にはフラットスクリーン捺染機を使用し分散染料によるプリント意匠柄を付与し130℃で前固着させた後、HTSスチーマで175℃の高圧スチーム処理を実施して完全固着させた。引き続き連続洗滌機でソーピング、水洗を実施し脱水、拡布後に表面温度120℃のシリンダーロールに通して乾燥処理を行い、ピンテンターで雰囲気温度160℃の仕上げセットを実施した。
【0026】
得られた生地は経緯密度がそれぞれ144本/2.54cm、107本/2.54cmのプリント生地となった。該プリント生地の裏面即ちプラストカレンダー面に窒化チタンをターゲット材としてスパッタリング法による金属薄膜を形成させた。得られた金属薄膜の膜厚は50nm、該生地のみの保温率Qが40%以上となる空間厚さは5.0mm以上、その時のclo値は0.65であることが確認された。因みに空間厚さが0mm以上5.0mm未満の範囲では保温率Qが40%未満に留まり熱反射による保温特性に乏しいものであった。表1に該生地のA.S.T.M.保温性評価結果(空間厚さと保温率、clo値の対比)を示す。空間厚さについては5.0mmから30.0mmまで保温率、clo値共に殆ど変化なく、空間厚さを過度に大きくしても布帛積層体の取扱性が悪くなるだけであり、金属層の効果による保温性はある一定の領域でほぼ一定となることが認められた。以下、該スパッタリング処理した生地を生地Aと称する。
【0027】
スパッタリング法の具体的な方法としては基材となるサンプルを巻き上げて拡布可能な状態とし密閉可能なケーシングに入れる。基材(サンプル)を拡布して前方に棒状の陽極及び金属ターゲットを設置し、上記ケーシング内圧を1×10−3Torr程度に減圧し、アルゴンガスを導入してケーシング内圧を5×10−4Torr程度の低圧アルゴンガス雰囲気に調整する。その後、陽極と陰極間に400〜800V、2〜100Aの直流電流を通すことによって陰極のターゲットから金属が飛び出し、基材(サンプル)の表面に密着させるものである。
【0028】
ほぼ生地Aと同様の方法で得た生機を作成し、オープンソーパー、液流精練機を用いた精練、リラックスを施し、ピンテンターで雰囲気温度190℃のプレセットを施した。その後、生地裏面にプラストカレンダー処理を施し、液流染色機を用いて分散染料による染色を施し、湯洗・水洗した後、パッドドライ法による帯電防止加工を施し、ピンテンターで雰囲気温度160℃の仕上げセットを実施した。得られた染色加工布は経緯密度145本/2.54cm、109本/2.54cmであった。以下、該染色加工布を生地Bと称する。
【0029】
ポリエチレンテレフタレートセミダル中空丸断面1.7デシテックス51mmカットのステープルファイバーをカードウェッブとし、ニードルパンチで絡合させて比容積120cm/g、目付60g/mの不織布を得た。生地A、生地Bのそれぞれ裏面にグラビアロールでドット状にポリエステル系のホットメルト接着剤を配した後、不織布とサンドイッチ状に接着し、布帛積層体を形成させて端面を縫製処理して掛け布団を得た。
【0030】
得られた掛け布団は保温性にも優れ、厚さ8.0mmと嵩高くなく熱反射エネルギーと断熱空気層の相乗効果が現れる、掛け布団自体の保温率Qは78.5%であり市販の20mm厚の羽毛布団の保温率Qとほぼ匹敵する効果が得られた。
また、布団自体の厚さが小さく留まり、コンパクトに折畳め収納性も良好な掛け布団であった。
【0031】
(比較例1)
実施例1で用いた生地Aを金属スパッタリング処理せずに表地として使用した他は実施例1同様の寸法、方法で掛け布団を作成した。掛け布団の保温率Qは50.5%に留まり、コンパクトであるが保温特性に乏しいものとなった。
【0032】
(比較例2)
中綿に用いた不織布を実施例1同様の方法で得た、比容積210cm/g、目付125g/mの不織布を用いた他は実施例1同様の方法で掛け布団を得た。得られた掛け布団は断熱空気層の厚さを含めて27.0mmと大きく、その効果とあいまって保温率Qは80.2%と良好な保温特性を有するものとなったが、嵩高くコンパクト感に欠けるものであった。また不織布層の層間剥離やへたりが生じ易く、形態保持性も懸念されるものであった。
【0033】
(比較例3)
中綿に用いた不織布を実施例1同様の方法で得た、比容積70cm/g、目付50g/mの不織布を用いた他は実施例1同様の方法で掛け布団を得た。得られた掛け布団は断熱空気層の厚さを含めて4.3mmと小さく留まり、金属層による熱反射効果が十分に得られない範囲であった為、保温率Qは59.8%とやや小さく、コンパクトに収納可能な形態であるものの十分な保温特性を有しないものとなった。
【0034】
【表1】

Figure 2004338169
【0035】
【発明の効果】
本発明によれば、保温性に優れると同時に不必要な嵩高感がないため、折畳み収納性に優れた、掛け布団、こたつ布団、膝掛け等の寝装・生活資材用途、若しくはダウンジャケットなど衣料用途に好適な保温性布帛積層体を得ることが出来る。また金属薄膜層による熱反射を有効に用いて保温効率を上げている為、従来品対比で中綿の量自体を軽減させることが出来、軽量感も併せ持つ素材の提供が可能となる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat-insulating fabric laminate, and more particularly, to a heat-insulating fabric laminate suitable for use in bedding and living materials such as comforters, kotatsu futons, and knee rests, or in clothing such as down jackets.
[0002]
[Prior art]
BACKGROUND ART Conventionally, fabric laminates using batting such as cotton, wool, and polyester have been widely used for bedding, living materials, and clothing. However, it is necessary to increase the amount of batting to keep the thickness of the heat insulating air layer large to obtain a suitable heat retaining property, it is bulky and difficult to handle, and it is not only heavy but also occupies storage space such as closet. There were problems such as an increase in area.
[0003]
Further, a futon excellent in heat retention using a cloth woven from a yarn containing or adhering a heat reflective substance as a side cloth has been proposed (for example, see Patent Document 1). Thermal energy released from the skin surface is reflected by the heat-reflective material, and it has moderate heat retention properties.However, there is no limit to the requirements for batting, such as the thickness of the insulating air layer, and the reflected thermal energy is efficiently used. It may not have been used for heat retention.
[0004]
As described above, it is possible to improve the heat retention by increasing the thickness of the heat-insulating air layer, but at the same time, it is bulky, lacks compactness, becomes difficult to handle, and the reflected heat energy increases the heat-insulating air layer itself. Since a large amount of heat is consumed for heat and heat retention, the heat retention efficiency of the human body surface is deteriorated.
[0005]
[Patent Document 1]
JP-A-2-41116 (claims, etc.)
[0006]
[Problems to be solved by the invention]
The present invention is intended to solve the problems as described above, the fabric provided with a metal layer, a batting nonwoven fabric, as a laminate of a fabric without a metal layer, the heat reflection effect of the metal layer and the batting nonwoven fabric An object of the present invention is to provide a heat-insulating fabric laminate that can be stored lightly and compactly by efficiently using the effect of a heat-insulating air layer.
[0007]
[Means for Solving the Problems]
That is, the present invention has the following configuration.
1. A synthetic fiber fabric in which a metal layer is arranged on at least one side, a batting, and a fabric laminate formed by combining fiber fabrics in which no metal layer is arranged, wherein the synthetic fiber fabric in which the metal layer is arranged forms a surface material. A heat insulating fabric laminate, wherein the outer metal layer and the batting, and the fiber fabric without the batting and the metal layer are substantially adhered, and the thickness of the laminate is 5 mm or more and 25 mm or less. .
2. The batting is a sheet material in the form of a nonwoven fabric, the specific volume according to JIS L-1097 is 80 cm 3 / g or more and 200 cm 3 / g or less, and only the synthetic fiber cloth obtained by disposing the metal layer with the batting removed is A . S. T. M. 2. The heat-insulating fabric laminate according to the above item 1, wherein the thickness of the batting is adjusted so that the space thickness is such that the heat retention rate Q when evaluated using a die tester is 40% or more.
3. A synthetic fiber fabric having a metal layer disposed on at least one surface thereof is formed using a polyester fiber, and the metal layer is formed of an oxide, carbide, or nitride of titanium, zinc, tin, aluminum, zirconium, or magnesium. The heat-insulating cloth laminate according to the first or second aspect, wherein the heat-insulating cloth laminate is constituted by at least one type selected from the group consisting of:
4. The non-woven sheet material used for the batting is formed by using at least one kind of fiber selected from natural fibers and / or synthetic fibers. The heat-insulating cloth laminate according to any one of the first to third aspects, wherein the heat-insulating cloth laminate is bonded in a shape.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
The heat-insulating fabric laminate of the present invention controls the distance between the metal thin film having heat radiation performance and the skin surface by the thickness of the batting at a position where the radiant energy effectively acts, and the warming effect of the batting on the insulating air layer. It is intended to provide a suitable heat retaining property by a synergistic effect of the radiant heat by the metal thin film, and it is possible to suppress the amount of batting by the radiating effect of the metal thin film, and to obtain a fabric laminate excellent in handleability. It was done.
[0009]
A metal thin film is formed on the inside of the synthetic fiber cloth which is the outer material of the heat-insulating cloth laminate of the present invention. Specifically, a thin film of at least one ceramic selected from oxides, carbides, and nitrides of titanium, zinc, tin, aluminum, zirconium, and magnesium is formed on the surface of the fiber substrate. Many techniques for forming a ceramic thin film, such as a sputtering method, a vacuum deposition method, an ion plating method, an electroless metal plating method, a direct coating method, and a laminating method, have been proposed. In particular, the sputtering method is preferably used because it is excellent in performance such as washing durability, hardly peels off, and does not involve texture hardening.
[0010]
The synthetic fiber fabric having a metal layer disposed on at least one surface used for the heat-retaining fabric laminate of the present invention, that is, the surface of the laminate has a long fiber bundle of thermoplastic synthetic fibers such as polyester, polyolefin, polyamide, etc. Alternatively, the spun yarn is suitably employed. In particular, polyester-based synthetic fibers are effective when a sputtering method is used because the official moisture content remains low. In addition, a fiber fabric having no metal layer, that is, a fabric constituting a skin side surface with a lining of a laminate is not only a long fiber bundle or a spun yarn of the synthetic fiber, but also natural fibers such as cotton, rayon, polynosic, regenerated fibers, and semi-finished fibers. A spun yarn or a blended yarn of synthetic fibers may be used, and a cross-woven fabric or a cross-knitted fabric may be used. In addition, the fabric referred to in the present invention refers to a woven fabric, a knitted fabric, or a two-dimensional structure.
[0011]
As the batting, any of animal fiber natural fibers such as wool, vegetable natural fibers such as cotton, and synthetic fibers such as polyester and polyolefin can be used. As a form, it is more preferable to use a non-woven fabric in which the fibers are oriented to some extent and the thickness and the basis weight are adjusted, and in order to prevent the fibers from being biased due to imparting a rubbing effect such as washing, the fibers are appropriately moderated by a needle punch, a water jet punch or the like. It is more preferred that they are entangled. In addition to the short-fiber nonwoven fabric, spunbonded nonwoven fabrics, flash-spun nonwoven fabrics, and melt-blown nonwoven fabrics mainly using plastic synthetic fibers can also be used as batting. Further, from the viewpoint of handleability, it is particularly preferable that the nonwoven fabric and the fabric to be laminated are point-adhered to each other with an adhesive resin in a dot-like manner to prevent displacement of the fabric and the batting. The dot density of the adhesive resin can be appropriately adjusted according to the adhesiveness to the fibers or the fiber fabric constituting the nonwoven fabric, the basis weight of the nonwoven fabric, and the like.
[0012]
Examples of the nonwoven fabric to be the batting include a single material of a synthetic fiber such as polyester, polyolefin, polyacrylonitrile, and polyvinyl alcohol, and a natural material such as cotton and wool, or a composite material thereof. The basis weight is preferably 20 g / m 2 or more and 150 g / m 2 or less, more preferably 25 g / m 2 or more and 100 g / m 2 or less. In the case of thinning with a basis weight of 20 g / m 2 or less, it is difficult to control the thickness uniformly, and it is easy to partially form a hole, which is not preferable. If it exceeds 150 g / m 2 , delamination is likely to occur unless the entanglement between fibers is reinforced, which is not preferred. Further, the weight of the fabric laminate itself becomes very heavy, which is not so desirable for use in bedding. When using synthetic fibers, to reduce the settling of the batting non-woven fabric, it is preferable to adopt a hollow cross section or irregular cross section to increase the moment of inertia of the cross section and make the fiber itself difficult to bend, and furthermore, appropriate crimping Are preferred. If necessary, functional processes such as anti-mite, antibacterial, deodorant, and moisture absorbing processes by a known method can be provided.
[0013]
The fiber fabric without any other metal layer is a portion which substantially forms the skin side surface, and the fiber fabric may be subjected to point bonding with an adhesive resin or the like in order to prevent a deviation from the batting nonwoven fabric. preferable. As for the adhesive resin to be used, it is preferable to use a hot-melt type such as a polyester-based resin, and a solvent-based adhesive resin is not preferable because it may cause a sick house syndrome due to a volatile organic solvent or the like. Antibacterial, deodorant, and other functional treatments can be applied to the fiber fabric forming the skin side surface as required by known methods.
[0014]
The synthetic fiber cloth having the metal layer and the fiber cloth having no metal layer are dyed by a known dyeing method. Do not prescribe a water-repellent agent, surfactant, etc. at the time before forming the metal layer for the synthetic fiber cloth as the base material, that is, the cloth to be the outer material of the laminate, in order to suppress the peeling of the metal layer thin film and to prevent the contamination of the process. Is preferred. After forming the metal layer, antibacterial, deodorizing, and other functional processing can be performed as necessary by a known method, and the cloth before forming the metal layer can be subjected to an exhaustion method, for example, by dyeing and simultaneous exhaustion. It is also preferable to carry out functional processing such as antibacterial, deodorant, fungicide and mite prevention.
[0015]
For the outer material which is a synthetic fiber fabric having a metal layer and the lining which is in contact with the skin which is a fiber fabric having no metal layer, any fabric, knit or other two-dimensional structure can be used. From the standpoint of aesthetics and aesthetics, the outer fabric is preferably a woven fabric, and the lining is preferably a woven fabric or a knitted fabric such as a tricot warp knitted fabric. Further, the outer material is preferably made of a long fiber bundle from the viewpoint of aesthetics such as glossiness, and the lining is preferably made of a short fiber spun yarn or a long and short composite spun yarn having a fluff on the surface in consideration of a contact temperature and cooling feeling. is there.
[0016]
The thickness of the metal layer is preferably from 1 to 1000 nm, more preferably from 5 to 500 nm, in consideration of the reflection performance of heat energy radiated from the skin surface. A thin film having a thickness of less than 1 nm is poor in durability, and it is difficult to expect sufficient thermal energy radiation performance, which is not preferable. If the thickness exceeds 1000 nm, sufficient heat energy radiation performance can be obtained, but the cost is high and the cost is not economical.
[0017]
The heat retention mechanism of the fabric laminate of the present invention reflects heat energy of body temperature by the metal layer present on the back surface of the outer material to prevent heat radiation, and adjusts the thickness of the heat-insulating air layer made of batting to an appropriate thickness, thereby improving skin In addition to increasing the heat reflection energy received by the surface, the heat insulation effect of the batting material is further enhanced by the interaction with the heat insulation effect. The effect of the insulated air layer is a very important factor in considering heat insulation, and by increasing the thickness of the insulated air layer, the heat insulation is improved, but at the same time it becomes heavy and bulky, and it is easy to handle. Tend to be worse. In view of the above, the present invention has determined the most suitable thickness of the adiabatic air layer, in which the effect of radiating thermal energy by the metal layer appears as a synergistic effect.
[0018]
The batting used for the heat-retaining fabric laminate of the present invention is a sheet in the form of a non-woven fabric, and has a specific volume according to JIS L-1097 of 80 cm 3 / g or more and 200 cm 3 / g or less, and more preferably 80 cm 3 / g or more and 150 cm 3. / G or less is preferred. When the specific volume is less than 80 cm 3 / g, the hard nonwoven fabric becomes too hard to be folded, and the so-called dead air amount of the heat insulating air layer decreases, which is not preferable from the viewpoint of heat retention. In the range exceeding 200 cm 3 / g, a super soft nonwoven fabric is obtained, the folding performance is good, the dead air amount of the heat insulating air layer is sufficient, and the heat retention is excellent, but the delamination of the nonwoven fabric is liable to occur. In addition, settling is likely to occur, and the shape retention performance of the laminate is likely to be impaired, which is not very preferable.
[0019]
The thickness of the heat-insulating air layer was set to only A.F. S. T. M. The thickness of the batting is adjusted by obtaining a space thickness at which the heat retention rate Q when evaluated using a die tester is 40% or more. The direction in which the heat retention ratio Q is larger is a preferable direction. When the heat retention ratio Q is less than 40%, the heat reflection energy remains small, and the heat retention tends to be insufficient, which is not preferable. A more preferable heat retention rate is 45% or more, and further preferably 50% or more. It can be said that the higher the heat retention ratio Q, the better, but usually the upper limit is up to about 95%.
[0020]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to the following Examples. The characteristic values in the text and the examples are derived by the following measurement methods.
[0021]
(Insulation test)
A. S. T. M. The test was performed using a die tester. The surface temperature of the heat-generating body is maintained at 36 ° C, the sputtered fabric is placed in the direction where the sputter surface faces the heat-generating body, and the space volume between the heat-generating body and the test piece is changed using a spacer. The heat loss (heat release amount) radiated through the test piece was determined, and the heat loss radiated in a blank state without the test piece on the test plate was measured. (True clo value) was determined.
[0022]
The heat retention was calculated based on the following equation.
Heat retention rate Q (%) = {1- (b / a)} x 100
Here, Q is a heat retention rate (%), a is a heat radiation amount in a state where no test piece is installed (blank), and b is a heat radiation amount in a state where the test piece is installed. Note that each heat radiation amount is calculated by converting the power consumption time into a heat radiation amount (J).
[0023]
(Specific volume)
The evaluation was performed according to JIS L-1097 (1982 edition).
[0024]
(Example 1)
Using a LS-6 type false twisting machine manufactured by Mitsubishi Heavy Industries, Ltd., a first heater temperature of 210 ° C., a second heater temperature of room temperature, a spindle rotation speed of 360,000 rpm, and a twist number of 780 filaments of polyethylene terephthalate semi-dal round section 78 decitex 216 filament In the Z → S direction, 3,400 times / m, false twist processing was performed under the respective conditions of a 2.0 mmφ eccentric sapphire pin manufactured by Awa Spindle Co., Ltd. The false twisted yarn was used for warp and weft of a woven fabric, and woven into plain weaves having a weft density of 138 yarns / 2.54 cm and 104 yarns / 2.54 cm, respectively, in a water jet loom.
[0025]
Subsequently, the obtained green fabric was subjected to scouring using an open soaper and a liquid scouring machine, and relaxed, and was pre-set at an ambient temperature of 190 ° C. by a pin tenter. Then, the back side of the fabric is subjected to plast calendering, and the surface of the fabric is provided with a printed design using a disperse dye using a flat screen printing machine, and is pre-fixed at 130 ° C., and then subjected to high-pressure steam treatment at 175 ° C. with an HTS steamer. This was carried out to completely fix. Subsequently, soaping and water washing were performed by a continuous washing machine, dehydration was performed, and after spreading, drying treatment was performed by passing through a cylinder roll having a surface temperature of 120 ° C., and a finishing set at an ambient temperature of 160 ° C. was performed using a pin tenter.
[0026]
The obtained fabrics were printed fabrics having a weft density of 144 lines / 2.54 cm and 107 lines / 2.54 cm, respectively. A metal thin film was formed on the back surface of the printed fabric, that is, on the plaster calender surface, by sputtering using titanium nitride as a target material. It was confirmed that the thickness of the obtained metal thin film was 50 nm, the space thickness at which the heat retention ratio Q of the cloth alone was 40% or more was 5.0 mm or more, and the clo value at that time was 0.65. Incidentally, when the space thickness was in the range of 0 mm or more and less than 5.0 mm, the heat retention ratio Q was less than 40%, and the heat retention characteristics due to heat reflection were poor. Table 1 shows the A.I. S. T. M. The result of heat retention evaluation (comparison of space thickness, heat retention, and clo value) is shown. Regarding the space thickness, the heat retention rate and the clo value hardly change from 5.0 mm to 30.0 mm, and even if the space thickness is excessively large, the handleability of the fabric laminate only deteriorates, and the effect of the metal layer is reduced. It was found that the heat retention by the method was almost constant in a certain area. Hereinafter, the sputtered cloth is referred to as cloth A.
[0027]
As a specific method of the sputtering method, a sample serving as a base material is rolled up so as to be spreadable and placed in a sealable casing. The base material (sample) is spread, a rod-shaped anode and a metal target are set in front, the internal pressure of the casing is reduced to about 1 × 10 −3 Torr, and argon gas is introduced to reduce the internal pressure of the casing to 5 × 10 −4. Adjust to a low pressure argon gas atmosphere of about Torr. Thereafter, by passing a direct current of 400 to 800 V and 2 to 100 A between the anode and the cathode, the metal jumps out of the cathode target and adheres to the surface of the base material (sample).
[0028]
A greige machine obtained in substantially the same manner as that of the dough A was prepared, scoured using an open soaper and a liquid scouring machine, relaxed, and pre-set at an ambient temperature of 190 ° C. with a pin tenter. After that, the back of the fabric is plast calendered, dyed with a disperse dye using a liquid jet dyeing machine, washed with hot water and water, and then subjected to antistatic processing by the pad dry method, and finished at an ambient temperature of 160 ° C with a pin tenter. The set was implemented. The obtained dyed cloth had a weft density of 145 / 2.54 cm and 109 / 2.54 cm. Hereinafter, the dyed cloth is referred to as cloth B.
[0029]
A staple fiber of polyethylene terephthalate semi-dal hollow round cross section 1.7 decitex 51 mm cut was used as a card web and entangled with a needle punch to obtain a nonwoven fabric having a specific volume of 120 cm 3 / g and a basis weight of 60 g / m 2 . After arranging a polyester hot melt adhesive in the form of a dot on the back surface of each of the fabric A and the fabric B with a gravure roll, the fabric is bonded to the nonwoven fabric in a sandwich shape, a fabric laminate is formed, and the end face is sewn to form a comforter. Obtained.
[0030]
The obtained comforter is also excellent in heat insulation, is not bulky with a thickness of 8.0 mm, and exhibits a synergistic effect of heat reflection energy and a heat insulating air layer. The heat insulation rate Q of the comforter itself is 78.5%, and a commercially available 20 mm thick. An effect almost equivalent to the heat retention rate Q of the duvet was obtained.
Further, the thickness of the futon itself was small, and the futon was compact and foldable, and had good storage stability.
[0031]
(Comparative Example 1)
A comforter was made in the same size and method as in Example 1 except that the cloth A used in Example 1 was used as a surface material without performing metal sputtering. The thermal insulation rate Q of the comforter remained at 50.5%, which was compact but poor in thermal insulation characteristics.
[0032]
(Comparative Example 2)
A nonwoven fabric used for batting was obtained in the same manner as in Example 1, and a quilt was obtained in the same manner as in Example 1 except that a nonwoven fabric having a specific volume of 210 cm 3 / g and a basis weight of 125 g / m 2 was used. The obtained comforter was as large as 27.0 mm including the thickness of the heat-insulating air layer, and together with its effect, the heat retention rate Q was 80.2% and had good heat retention characteristics. Was lacking. In addition, delamination and sagging of the nonwoven fabric layer were liable to occur, and there was a concern about shape retention.
[0033]
(Comparative Example 3)
A nonwoven fabric used for batting was obtained in the same manner as in Example 1, and a quilt was obtained in the same manner as in Example 1 except that a nonwoven fabric having a specific volume of 70 cm 3 / g and a basis weight of 50 g / m 2 was used. The obtained comforter stayed as small as 4.3 mm including the thickness of the heat-insulating air layer, and was in a range where the heat reflection effect of the metal layer was not sufficiently obtained. Therefore, the heat retention rate Q was slightly small at 59.8%. Although it is a form that can be stored compactly, it does not have sufficient heat retention characteristics.
[0034]
[Table 1]
Figure 2004338169
[0035]
【The invention's effect】
According to the present invention, since it is excellent in heat retention and does not have unnecessary bulkiness, it is excellent in folding storage, and is used for bedding / living materials such as comforters, kotatsu futons, knee rests, and clothing such as down jackets. A suitable heat-insulating fabric laminate can be obtained. In addition, since the heat insulation efficiency is increased by effectively using the heat reflection of the metal thin film layer, the amount of batting itself can be reduced as compared with the conventional product, and a material having a light feeling can be provided.

Claims (4)

少なくとも片面に金属層を配してなる合成繊維布帛、中綿、金属層を配しない繊維布帛が組み合わされてなる布帛積層体であって、該金属層を配してなる合成繊維布帛が表地を形成し、表地金属層と中綿、及び中綿と金属層を配しない繊維布帛が実質的に接着されてなり、該積層体の厚さが5mm以上25mm以下であることを特徴とする保温性布帛積層体。A synthetic fiber fabric having a metal layer on at least one side, a batting, and a fabric laminate formed by combining fiber fabrics without a metal layer, wherein the synthetic fiber fabric having the metal layer forms a surface material. And a heat-insulating fabric laminate, wherein the outer fabric metal layer and the batting, and the fiber fabric without the batting and the metal layer are substantially bonded, and the laminate has a thickness of 5 mm or more and 25 mm or less. . 中綿が不織布形態のシート状物でありJIS L−1097による比容積が80cm/g以上200cm/g以下であり、中綿を排除した状態で金属層を配してなる合成繊維布帛のみをA.S.T.M.型試験機を用いて評価した場合の保温率Qが40%以上となる空間厚さになるように中綿の厚さを調整したことを特徴とする請求項1記載の保温性布帛積層体。The batting is a sheet material in the form of a nonwoven fabric, the specific volume according to JIS L-1097 is 80 cm 3 / g or more and 200 cm 3 / g or less. . S. T. M. 2. The heat-insulating cloth laminate according to claim 1, wherein the thickness of the batting is adjusted so that the heat insulation rate Q when evaluated using a die tester is 40% or more. 少なくとも片面に金属層を配してなる合成繊維布帛が、ポリエステル系繊維を用いてなるものであって、該金属層がチタン、亜鉛、錫、アルミニウム、ジルコニウム、マグネシウムの酸化物、炭化物、窒化物から選択される少なくとも1種類から構成されることを特徴とする請求項1又は2に記載の保温性布帛積層体。A synthetic fiber fabric having a metal layer disposed on at least one surface thereof is made of a polyester fiber, and the metal layer is formed of an oxide, carbide, or nitride of titanium, zinc, tin, aluminum, zirconium, or magnesium. The heat-insulating cloth laminate according to claim 1, wherein the heat-insulating cloth laminate is composed of at least one selected from the group consisting of: 中綿に用いる不織布形態のシート状物が、天然繊維及び/又は合成繊維から選択される少なくとも1種類の繊維を使用してなるものであり、実質的に表地、裏地の少なくとも一方に接着剤によってドット状に接着されてなることを特徴とする請求項1〜3のいずれかに記載の保温性布帛積層体。The non-woven sheet material used for the batting is formed by using at least one kind of fiber selected from natural fibers and / or synthetic fibers. The heat-insulating fabric laminate according to any one of claims 1 to 3, wherein the heat-insulating fabric laminate is bonded in a shape.
JP2003135863A 2003-05-14 2003-05-14 Heat insulating cloth laminate Pending JP2004338169A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD670435S1 (en) 2009-05-07 2012-11-06 Columbia Sportswear North America, Inc. Heat reflective material with pattern
CN102806725A (en) * 2011-06-03 2012-12-05 Ventex株式会社 Body heat reflective sheet
US8424119B2 (en) 2009-05-07 2013-04-23 Columbia Sportswear North America, Inc. Patterned heat management material
US8479322B2 (en) 2009-05-07 2013-07-09 Columbia Sportswear North America, Inc. Zoned functional fabrics
US8510871B2 (en) 2009-05-07 2013-08-20 Columbia Sportswear North America, Inc. Holographic patterned heat management material
KR101611380B1 (en) * 2014-04-29 2016-04-26 (주)탑나노시스 Carbon nanotube coating solution for improving thermokeeping, carbon nanotube thermokeeping product, and clothes including the carbon nanotube thermokeeping product
JP2017119923A (en) * 2015-12-28 2017-07-06 株式会社大木工藝 Thermal clothing
JP2018065385A (en) * 2016-10-17 2018-04-26 旭化成アドバンス株式会社 Laminated fabric
US11426969B2 (en) * 2013-06-03 2022-08-30 Xefco Pty Ltd Insulated radiant barriers in apparel

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD670435S1 (en) 2009-05-07 2012-11-06 Columbia Sportswear North America, Inc. Heat reflective material with pattern
US8424119B2 (en) 2009-05-07 2013-04-23 Columbia Sportswear North America, Inc. Patterned heat management material
US8453270B2 (en) 2009-05-07 2013-06-04 Columbia Sportswear North America, Inc. Patterned heat management material
US8479322B2 (en) 2009-05-07 2013-07-09 Columbia Sportswear North America, Inc. Zoned functional fabrics
US8510871B2 (en) 2009-05-07 2013-08-20 Columbia Sportswear North America, Inc. Holographic patterned heat management material
CN102806725A (en) * 2011-06-03 2012-12-05 Ventex株式会社 Body heat reflective sheet
US11426969B2 (en) * 2013-06-03 2022-08-30 Xefco Pty Ltd Insulated radiant barriers in apparel
KR101611380B1 (en) * 2014-04-29 2016-04-26 (주)탑나노시스 Carbon nanotube coating solution for improving thermokeeping, carbon nanotube thermokeeping product, and clothes including the carbon nanotube thermokeeping product
JP2017119923A (en) * 2015-12-28 2017-07-06 株式会社大木工藝 Thermal clothing
JP2018065385A (en) * 2016-10-17 2018-04-26 旭化成アドバンス株式会社 Laminated fabric

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