JP2002115159A - Heat insulating material and method for producing the same - Google Patents
Heat insulating material and method for producing the sameInfo
- Publication number
- JP2002115159A JP2002115159A JP2001224044A JP2001224044A JP2002115159A JP 2002115159 A JP2002115159 A JP 2002115159A JP 2001224044 A JP2001224044 A JP 2001224044A JP 2001224044 A JP2001224044 A JP 2001224044A JP 2002115159 A JP2002115159 A JP 2002115159A
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- Japan
- Prior art keywords
- fiber
- heat insulating
- insulating material
- fibers
- melting point
- 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.)
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- Building Environments (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、断熱性および使用
時の作業性に優れる断熱材およびその製造方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating material having excellent heat insulating properties and workability during use, and a method for producing the same.
【０００２】[0002]
【従来の技術】従来、床、壁、屋根等の住宅用断熱材と
しては、ガラスウールにフェノール樹脂等をスプレー
法、含浸法等により塗布し、次いでプラスチックフィル
ム、アルミニウム箔等を貼り合わせて硬化したものが使
用されている。しかしながら、このガラスウール製断熱
材は、フェノール樹脂を塗布する工程においては環境汚
染を生じやすく、またこの断熱材を施工する際には作業
者の肌に触れると皮膚がチクチクと刺激されたり、アレ
ルギー症状等の皮膚障害が生じる問題がある。また、施
行後長期間経ると湿気と熱によりフェノール樹脂が加水
分解を起こして嵩が小さくなり下方にずれ落ちたり外壁
と断熱材間に隙間が生じて断熱効果が著しく低下すると
いう大きな問題がある。この様な問題点を解消すべく、
ガラスウールに代えて発泡ウレタン、発泡スチレン等を
用いる方法が種々検討されている。これらの発泡体は、
軽量で断熱性、遮音性等にも優れるが、曲げ強さ、衝撃
強さ等の機械的強度が劣る、などの欠点を有する。2. Description of the Related Art Conventionally, as a heat insulating material for houses such as floors, walls, roofs, etc., a phenol resin or the like is applied to glass wool by a spray method, an impregnation method, etc., and then a plastic film, an aluminum foil or the like is laminated and cured. That is used. However, this glass wool insulation material tends to cause environmental pollution in the process of applying the phenolic resin, and when the insulation material is applied, the skin may be irritated or irritated when the worker touches the skin. There is a problem that skin disorders such as symptoms occur. In addition, when the phenol resin is hydrolyzed due to moisture and heat for a long time after the treatment, the phenol resin has a large problem that the bulk becomes small and shifts downward, or a gap is formed between the outer wall and the heat insulating material, thereby significantly reducing the heat insulating effect. . To solve such problems,
Various methods using urethane foam, foamed styrene, or the like instead of glass wool have been studied. These foams
It is lightweight and excellent in heat insulation and sound insulation, but has drawbacks such as poor mechanical strength such as bending strength and impact strength.
【０００３】また、ポリエステル捲縮繊維をマトリック
スとし、熱接着性繊維で該繊維を固定したポリエステル
繊維製断熱材は、例えば特開平６−２５７０４８号、特
開平７−１０２４６１号等に記載されている。しかしこ
れらはいずれも断熱性、吸音性及び弾性も不十分なた
め、このままでは住宅用断熱材としては不適当である。Further, a polyester fiber heat insulating material in which a polyester crimped fiber is used as a matrix and the fiber is fixed with a heat-adhesive fiber is described in, for example, JP-A-6-257048 and JP-A-7-102461. . However, all of them have insufficient heat insulating properties, sound absorbing properties, and elasticity, and are unsuitable as residential heat insulating materials as they are.
【０００４】また、表皮材を積層することにより、断熱
性が向上することが分かっているが、不織布基材の密度
が低く、硬度が非常に低い場合、表皮材の積層加工は困
難であった。It is known that the heat insulating property is improved by laminating the skin material. However, when the density of the nonwoven fabric substrate is low and the hardness is very low, it is difficult to laminate the skin material. .
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、上記
従来技術の問題点を解消し、軽量で断熱性、吸音性等に
も優れるが、使用時の作業性にも優れ、曲げ強さ、衝撃
強さ等の機械的強度も向上した断熱材、及びその断熱材
を容易に製造する方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to be lightweight and excellent in heat insulating properties and sound absorbing properties, but also excellent in workability in use and in bending strength. Another object of the present invention is to provide a heat insulating material having improved mechanical strength such as impact strength, and a method for easily manufacturing the heat insulating material.
【０００６】[0006]
【課題を解決するための手段】本発明の繊維集合体は、
前記課題を解決するために以下のような構成を有する。
すなわち、２種類以上の短繊維集合体からなる断熱材で
あって、該短繊維集合体がマトリックス繊維およびマト
リックス繊維の融点よりも低い融点を有する成分を含む
低融点繊維からなり、該マトリックス繊維のうち少なく
とも１種類が中空型構造であることを特徴とする断熱材
である。The fiber assembly of the present invention comprises:
In order to solve the above-mentioned problem, the following configuration is provided.
That is, a heat insulating material comprising two or more types of short fiber aggregates, wherein the short fiber aggregates are composed of a matrix fiber and a low-melting fiber containing a component having a lower melting point than the melting point of the matrix fiber, At least one of them has a hollow structure.
【０００７】また、上記発明の好ましい態様として、前
記低融点繊維により繊維相互間の接触部の一部で実質的
に接着しており、該繊維集合体の積層面の表面及び／又
は少なくとも１つの側面の表面部分が膜状化しているこ
とを特徴とするの断熱材である。In a preferred aspect of the present invention, the low-melting-point fibers are substantially adhered to each other at a part of a contact portion between the fibers, and a surface of a lamination surface of the fiber assembly and / or at least one A heat insulating material characterized in that a surface portion of a side surface is formed into a film.
【０００８】さらに好ましい態様として、該繊維集合体
における低融点繊維の含量が５〜９５ｗｔ％である断熱
材である。[0008] As a further preferred embodiment, there is provided a heat insulating material in which the content of the low melting point fiber in the fiber assembly is 5 to 95 wt%.
【０００９】また、２種類以上の短繊維集合体からなる
断熱材を製造するに際して、少なくとも１種類が中空型
構造であるマトリックス繊維およびマトリックス繊維の
融点よりも低い融点を有する成分を含む低融点繊維を混
合し、該低融点繊維により繊維相互間の接着部の一部で
接着させた繊維集合体とし、その後機械的及び／又は熱
的に処理を施して該繊維集合体の積層面の表面及び／又
は少なくとも１つの側面の表面部分を膜状化させること
を特徴とする断熱材の製造方法である。In the production of a heat insulating material comprising two or more kinds of short fiber aggregates, at least one kind is a matrix fiber having a hollow structure and a low melting point fiber containing a component having a melting point lower than the melting point of the matrix fiber. Are mixed to form a fiber assembly bonded at a part of the bonding portion between the fibers by the low-melting fiber, and then subjected to a mechanical and / or thermal treatment to provide a surface of the laminated surface of the fiber assembly and And / or a method of manufacturing a heat insulating material, wherein a surface portion of at least one side surface is formed into a film.
【００１０】[0010]
【発明の実施の形状】以下に本発明の断熱材の部材であ
る繊維集合体について説明する。本発明の実施の形状に
係わる断熱材を構成する繊維について説明する。利用可
能な素材としては、ポリエチレンテレフタレート（ＰＥ
Ｔ）、ポリブチレンテレフタレート（ＰＢＴ）、ポリエ
チレンナフタレート（ＰＥＮ）、ポリ乳酸（ＰＬＡ）や
これらの共重合体に代表されるポリエステル、ナイロン
６、ナイロン６６等のポリアミド、その他ポリオレフィ
ン、アクリル、モダクリル等の合成繊維や、絹、綿、麻
等の天然繊維が挙げられる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The fiber assembly which is a member of the heat insulating material of the present invention will be described below. The fibers constituting the heat insulating material according to the embodiment of the present invention will be described. Available materials include polyethylene terephthalate (PE
T), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polylactic acid (PLA), polyesters represented by these copolymers, polyamides such as nylon 6, nylon 66, etc., other polyolefins, acryl, modacrylic, etc. And natural fibers such as silk, cotton, and hemp.
【００１１】本発明に用いる繊維集合体は、上記繊維を
２種類以上含むが、マトリックス繊維として少なくとも
１種類の繊維は中空型構造である必要がある。中空型構
造の繊維を使用することにより、軽量であるだけでなく
断熱性にも優れた繊維集合体を得ることが可能である。The fiber aggregate used in the present invention contains two or more types of the above fibers, and at least one type of the matrix fibers must have a hollow structure. By using a fiber having a hollow structure, it is possible to obtain a fiber aggregate that is not only lightweight but also excellent in heat insulation.
【００１２】これは中空型構造の繊維では、繊維の中空
部分に空気が保持されるためである。通常、繊維集合体
を断熱材として使用する場合、繊維集合体中に発生する
空気対流によって熱が移動するが、中空型構造の繊維を
使用することによりこれを抑えられる。This is because air is held in the hollow portion of the fiber in the hollow structure fiber. Normally, when a fiber aggregate is used as a heat insulating material, heat is transferred by air convection generated in the fiber aggregate, but this can be suppressed by using a fiber having a hollow structure.
【００１３】また、マトリックス繊維は、単独ポリマー
からなるものだけでなく、複合繊維も好ましく用いられ
る。例えば、サイドバイサイドの構造を有し自己捲縮発
現性を有する繊維等である。また、サイドバイサイド構
造と上記中空型構造を組み合わせた繊維も知られてお
り、このタイプの繊維は本発明の繊維構造体のマトリッ
クス繊維として特に好ましく用いられる。マトリックス
繊維は１種類のみでなく、複数の種類を組み合わせても
よい。The matrix fibers are not limited to those composed of a single polymer, and conjugate fibers are also preferably used. For example, it is a fiber having a side-by-side structure and having self-crimping property. Further, a fiber having a combination of a side-by-side structure and the above-mentioned hollow structure is also known, and this type of fiber is particularly preferably used as a matrix fiber of the fiber structure of the present invention. The matrix fiber is not limited to one type, and a plurality of types may be combined.
【００１４】本発明の断熱材には、マトリックス繊維の
融点よりも低い融点を有する成分を含む低融点繊維を使
用することが必要である。このような、低融点成分（あ
るいは融着成分ともいう）は、通常数十℃から百数十℃
の温度で溶融又は軟化する。低融点成分のみが溶融又は
軟化し、他の繊維成分には影響のない温度で繊維構造体
を熱処理し、低融点成分により繊維相互間の接触部の一
部で実質的に接着させる。これにより、繊維集合体の形
状が保持される。It is necessary for the heat insulating material of the present invention to use a low melting point fiber containing a component having a melting point lower than that of the matrix fiber. Such a low-melting point component (also referred to as a fusion component) is usually from several tens of degrees Celsius to one hundred and several tens degrees Celsius.
Melts or softens at a temperature of Only the low melting point component is melted or softened and the fibrous structure is heat treated at a temperature that does not affect the other fiber components, and the low melting point component substantially bonds at a part of the contact portion between the fibers. Thereby, the shape of the fiber assembly is maintained.
【００１５】このような低融点成分を含む繊維の例とし
ては、イソフタル酸を共重合したＰＥＴとホモＰＥＴか
らなる複合繊維、ポリオレフィンとＰＥＴからなる複合
繊維等が挙げられる。Examples of the fiber containing such a low melting point component include a composite fiber composed of PET and homo-PET copolymerized with isophthalic acid, and a composite fiber composed of polyolefin and PET.
【００１６】低融点繊維の混率は任意であるが、繊維集
合体の耐熱性や形状保持性の観点から５〜９５ｗｔ％の
利用が好ましい。The mixing ratio of the low melting point fiber is arbitrary, but it is preferable to use 5 to 95% by weight from the viewpoint of heat resistance and shape retention of the fiber assembly.
【００１７】本発明の好ましい態様として、繊維集合体
を構成する繊維が全てポリエステル繊維であるものが挙
げられる。素材をポリエステルに統一する事は、特にリ
サイクル面で優位である。例えば、マトリックス繊維と
してＰＥＴ、ＰＥＮ等のホモポリマーからなるものや、
ホモポリエステルを１成分とするサイドバイサイド繊維
と、共重合ポリエステルを低融点成分とする単独又は複
合ポリエステルからなる繊維集合体を例示することが出
来る。In a preferred embodiment of the present invention, the fibers constituting the fiber assembly are all polyester fibers. Unifying the material to polyester is particularly advantageous in terms of recycling. For example, matrix fibers made of homopolymers such as PET and PEN,
A fiber aggregate composed of a side-by-side fiber containing a homopolyester as a component and a single or composite polyester containing a copolymerized polyester as a low melting point component can be exemplified.
【００１８】本発明に用いる短繊維は、断熱性能と弾性
性能の面から、繊維径の大きいものと小さいものを混合
して用いる事は好ましい。The short fibers used in the present invention are preferably used in combination of large and small fiber diameters in view of heat insulation performance and elastic performance.
【００１９】次に本発明の断熱材の製造方法について説
明する。最初に前述したマトリックス繊維と低融点繊維
を任意の混率で混合する。混綿、カーディングを行い、
クロスレイヤでウェッブを積層して熱処理を施す。熱処
理温度は低融点繊維中の低融点成分が軟化又は溶融する
温度より高く、他の繊維成分が溶融する温度より低い温
度で行う。これにより、低融点繊維（の一部）が溶融
し、繊維集合体は構成繊維の相互間の接触部の一部で実
質的に接着する。Next, a method for manufacturing the heat insulating material of the present invention will be described. First, the above-mentioned matrix fiber and low-melting fiber are mixed at an arbitrary mixing ratio. Do cotton mixing, carding,
The webs are stacked in a cross layer and heat-treated. The heat treatment temperature is higher than the temperature at which the low melting point component in the low melting point fiber softens or melts, and lower than the temperature at which the other fiber components melt. Thereby, (a part of) the low melting point fiber is melted, and the fiber aggregate is substantially bonded at a part of the contact portion between the constituent fibers.
【００２０】更に、後述する方法等により繊維集合体の
少なくとも一つの面の表面部分を膜状化させる事が好ま
しい。本発明では、繊維集合体において一番外側に露出
しているウェッブを「積層面」と称し、それ以外の４つ
の面を「側面」と称している。従って、本発明では２つ
ある積層面、４つの側面の全部で６つある面の少なくと
も１つの面の表面部分が膜状化していればよい。Further, it is preferable that the surface portion of at least one surface of the fiber assembly is formed into a film by a method described later. In the present invention, the outermost exposed web in the fiber assembly is referred to as “laminated surface”, and the other four surfaces are referred to as “side surfaces”. Therefore, in the present invention, it is only necessary that at least one of the six laminated surfaces and the four side surfaces has a surface portion formed into a film.
【００２１】膜状化させるには、熱的処理によって繊維
どうしの結合を強める方法や、機械的処理によって繊維
どうしの絡み合いを強める方法がある。また、上記熱的
処理および機械的処理を同時に行うことで、より精密な
通気量制御が可能となる。For forming a film, there are a method of strengthening the bonding between the fibers by a thermal treatment and a method of strengthening the entanglement of the fibers by a mechanical treatment. Further, by performing the thermal treatment and the mechanical treatment at the same time, it becomes possible to control the ventilation rate more precisely.
【００２２】不織布断熱材の片面に薄い膜を形成させる
ことにより、熱が入射してきた場合、表皮に相当する膜
部分によって伝熱が遮断される。また表面部分を膜状化
させることにより、密度の低い自立しにくい不織布も硬
度が増して自立可能となるうえ、曲げ強さや衝撃強さ等
の機械的強度も向上する。さらに硬化膜により繊維の絡
まりが少なくなり、施工時の鋲打ちが容易になるなどの
効果がある。By forming a thin film on one side of the nonwoven fabric heat insulating material, when heat enters, the heat transfer is blocked by the film portion corresponding to the skin. In addition, by forming the surface portion into a film, the non-woven fabric having a low density that is difficult to be self-supporting increases in hardness and becomes self-supporting, and also has improved mechanical strength such as bending strength and impact strength. Further, the cured film has the effect of reducing entanglement of fibers and facilitating tacking during construction.
【００２３】さらに繊維集合体の少なくとも１つの面の
表面を膜状化させることにより、膜状部分からの入射音
に対する吸音性能が飛躍的に向上する。これは通常の繊
維集合体部分による吸音効果とは別に、膜が特定周波数
領域で共振するという「膜吸音」という効果が新たに発
生するためである。Further, by forming at least one surface of the fiber assembly into a film, the sound absorbing performance against the sound incident from the film portion is remarkably improved. This is because an effect called “membrane sound absorption” in which the film resonates in a specific frequency region is newly generated, in addition to the sound absorbing effect of the normal fiber assembly portion.
【００２４】熱的処理の場合、例えばカーディングを行
って不織布とした後の工程で、赤外線ヒータの輻射熱に
よる間接的な加熱処理を上下両面から施す。このとき片
面の加熱温度をもう一方の片面より高くすることによ
り、積層面の表面を膜状化させることが可能である。In the case of thermal treatment, for example, in a step after carding is performed to form a nonwoven fabric, indirect heating treatment by radiant heat of an infrared heater is performed from both upper and lower surfaces. At this time, by making the heating temperature of one side higher than that of the other side, the surface of the lamination surface can be made into a film.
【００２５】また熱板あるいは熱ローラによる接触加熱
で、表面を膜状化させることも可能である。この場合、
カーディングを行って不織布とした後の工程で、熱板あ
るいは熱ローラでプレスを行い積層面の表面を膜状化さ
せる。The surface can be formed into a film by contact heating using a hot plate or a hot roller. in this case,
In a step after carding is performed to form a nonwoven fabric, pressing is performed with a hot plate or a hot roller to form a film on the surface of the laminated surface.
【００２６】赤外線ヒータ等による間接加熱、あるいは
熱板等による接触加熱のいずれの場合も、表面を加熱処
理して溶融せしめる温度は１１０〜２２０℃であること
が好ましい。この範囲内であると、表面を膜状化させる
のに十分であるほか、マトリックス繊維に与える影響も
少ない。このためマトリックス繊維のポリマー劣化等が
引き起こす物性変化などが抑制され好ましい。In either case of indirect heating with an infrared heater or the like or contact heating with a hot plate or the like, the temperature at which the surface is heated and melted is preferably 110 to 220 ° C. When it is within this range, the surface is sufficient to form a film, and the influence on the matrix fiber is small. Therefore, a change in physical properties caused by deterioration of the polymer of the matrix fiber or the like is suppressed, which is preferable.
【００２７】さらに不織布を巾方向にカッティングする
際、カット面に熱板を接触させることで積層面の表面だ
けではなく側面の表面を膜状化させることも可能であ
る。通常、不織布は切断した側面はそのまま使用される
ことが多いが、側面にも膜状層を形成させることによっ
て、毛羽が抑制され見栄えのある商品となる。また、側
面からの雨水の浸入もしにくくなるため好ましい。Further, when the nonwoven fabric is cut in the width direction, it is possible to form not only the surface of the lamination surface but also the surface of the side surface by bringing a hot plate into contact with the cut surface. Usually, the cut side surface of the nonwoven fabric is often used as it is, but by forming a film-like layer also on the side surface, fluff is suppressed and the product becomes attractive. Further, it is preferable because rainwater does not easily enter from the side.
【００２８】上記のような赤外線ヒータ、熱板あるいは
熱ローラ等、熱的処理による膜状化の場合、膜状層の厚
さは１ｍｍ未満となる。この場合、厚さが薄いことによ
り施工時の鋲打ちがより容易となるため好ましい。In the case of forming a film by a thermal treatment such as an infrared heater, a hot plate or a heat roller as described above, the thickness of the film layer is less than 1 mm. In this case, it is preferable that the thickness is thin because the tacking at the time of construction becomes easier.
【００２９】機械的処理の場合、繊維集合体をニードリ
ングによって繊維どうしの絡み合いを強める方法により
膜状化させても良い。膜状化させることにより、表皮材
が不要となり経済的である。In the case of mechanical treatment, the fiber assembly may be formed into a film by a method of strengthening the entanglement of the fibers by needling. By forming into a film, a skin material is not required, which is economical.
【００３０】本発明の断熱材の大きさや密度は、使用目
的や必要とされる断熱性に応じて適宜変更が可能であ
る。The size and density of the heat insulating material of the present invention can be appropriately changed according to the purpose of use and the required heat insulating property.
【００３１】[0031]
【実施例】実施例１ サイドバイサイドの構造を有し自己捲縮発現性を有する
中空構造型ポリエステル繊維「Ｈ５８８」（カネボウ合
繊（株）製、繊度７ｄｔｅｘ、繊維長５１ｍｍ）４０重
量％、カネボウ合繊株式会社製レギュラー機械捲縮ポリ
エステル繊維「３１０」（繊度１．６ｄｔｅｘ、繊維長
５１ｍｍ）４０重量％、芯鞘型の複合繊維であってその
鞘部を構成する成分の融点が、レギュラー機械捲縮ポリ
エステル繊維より約１４０℃低いユニチカファイバー株
式会社製ポリエステル繊維「４０８０」（繊度２．２ｄ
ｔｅｘ、繊維長５１ｍｍ）２０重量％を混綿し、カーデ
ィングを行ってウェブを作製した後、通常の熱風循環に
よる均一な加熱処理を繊維集合体全体に施し、目付１５
０ｇ／ｍ2、全体厚み１５ｍｍ、密度０．０１ｇ／ｃｍ3
の不織布断熱材を得た。Example 1 40% by weight of hollow structure type polyester fiber "H588" (manufactured by Kanebo Synthetic Co., Ltd., fineness 7 dtex, fiber length 51 mm) having a side-by-side structure and self-crimping property, Kanebo Synthetic Stock 40% by weight of regular mechanical crimped polyester fiber “310” (fineness: 1.6 dtex, fiber length 51 mm) manufactured by the company, which is a core-in-sheath type composite fiber, and the melting point of the component constituting the sheath is regular mechanical crimped polyester. Unitika Fiber Co., Ltd. polyester fiber “4080” (approx.
tex, fiber length 51 mm), 20% by weight of cotton was mixed, carding was performed to produce a web, and a uniform heat treatment was performed on the entire fiber aggregate by ordinary hot air circulation to obtain a basis weight of 15%.
0 g / m 2 , total thickness 15 mm, density 0.01 g / cm 3
A nonwoven fabric heat insulating material was obtained.
【００３２】実施例２ 実施例１と同じ組成の繊維を混綿し、カーディングを行
ってウェブを作製した後、赤外線ヒータの輻射熱による
間接的な加熱処理を両面より施し、特に片面の加熱温度
をもう一方の片面より高くすることにより片側表面を膜
状化し、目付１５０ｇ／ｍ2、全体厚み１５ｍｍ、密度
０．０１ｇ／ｃｍ3の不織布断熱材を得た。Example 2 After mixing fibers having the same composition as in Example 1 to produce a web by carding, indirect heating treatment was performed on both sides by radiant heat of an infrared heater. By making the surface higher than the other surface, the one surface was formed into a film to obtain a nonwoven fabric heat insulating material having a basis weight of 150 g / m 2 , a total thickness of 15 mm, and a density of 0.01 g / cm 3 .
【００３３】実施例３ 実施例１と同じ組成の繊維を混綿し、カーディングを行
ってウェブを作製した後、赤外線ヒータの輻射熱による
間接的な加熱処理を両面より施し、特に片面の加熱温度
をもう一方の片面より高くすることにより片側表面を膜
状化し、目付２００ｇ／ｍ2、全体厚み１５ｍｍ、密度
０．０１３ｇ／ｃｍ3の不織布断熱材を得た。Example 3 A web having the same composition as in Example 1 was mixed and carded to produce a web, and then subjected to indirect heat treatment from both sides by radiant heat of an infrared heater. By making it higher than the other one side, one side surface was formed into a film to obtain a nonwoven fabric heat insulating material having a basis weight of 200 g / m 2 , a total thickness of 15 mm, and a density of 0.013 g / cm 3 .
【００３４】実施例４ 実施例１と同じ組成の繊維を混綿し、カーディングを行
ってウェブを作製した後、赤外線ヒータの輻射熱による
間接的な加熱処理を両面より施し、特に片面の加熱温度
をもう一方の片面より高くすることにより片側表面を膜
状化し、目付３００ｇ／ｍ2、全体厚み１５ｍｍ、密度
０．０２ｇ／ｃｍ3の不織布断熱材を得た。Example 4 After blending fibers having the same composition as in Example 1 and performing carding to produce a web, indirect heating treatment was performed on both sides by radiant heat of an infrared heater. By making the surface higher than the other one surface, one surface was formed into a film, and a nonwoven fabric heat insulating material having a basis weight of 300 g / m 2 , a total thickness of 15 mm, and a density of 0.02 g / cm 3 was obtained.
【００３５】実施例５ 実施例１と同じ組成の繊維を混綿し、カーディングを行
ってウェブを作製した後、赤外線ヒータの輻射熱による
間接的な加熱処理を両面より施し、特に片面の加熱温度
をもう一方の片面より高くすることにより片側表面を膜
状化し、目付４５０ｇ／ｍ2、全体厚み１５ｍｍ、密度
０．０３ｇ／ｃｍ3の不織布断熱材を得た。Example 5 A web having the same composition as in Example 1 was mixed and carded to produce a web, and then subjected to indirect heat treatment from both sides by radiant heat of an infrared heater. By making it higher than the other one side, one side surface was formed into a film to obtain a nonwoven fabric heat insulating material having a basis weight of 450 g / m 2 , a total thickness of 15 mm, and a density of 0.03 g / cm 3 .
【００３６】実施例６ 実施例１と同じ組成の繊維を混綿し、カーディングを行
ってウェブを作製した後、ニードルパンチを片面から施
すことにより片側表面を膜状化し、目付１５０ｇ／
ｍ2、全体厚み１５ｍｍ、密度０．０１ｇ／ｃｍ3の不織
布断熱材を得た。Example 6 A fiber having the same composition as in Example 1 was mixed and carded to produce a web. Then, a needle punch was applied from one side to form a film on one side, and the basis weight was 150 g / m2.
A non-woven fabric heat insulating material having an m 2 , an overall thickness of 15 mm, and a density of 0.01 g / cm 3 was obtained.
【００３７】実施例７ 実施例１と同じ組成の繊維を混綿し、カーディングを行
ってウェブを作製した後、赤外線ヒータの輻射熱による
間接的な加熱処理を両面より施して不織布を作製し、巾
方向にカッティングする際に、カット面に熱板を接触さ
せることで側面の表面を膜状化し、目付１５０ｇ／
ｍ2、全体厚み１５ｍｍ、密度０．０１ｇ／ｃｍ3の不織
布断熱材を得た。Example 7 A web was prepared by blending fibers having the same composition as in Example 1, carding was performed, and indirect heating treatment was performed from both sides by radiant heat of an infrared heater to prepare a nonwoven fabric. When cutting in the direction, the surface of the side surface is formed into a film by bringing a hot plate into contact with the cut surface, and the basis weight is 150 g /
A non-woven fabric heat insulating material having an m 2 , an overall thickness of 15 mm, and a density of 0.01 g / cm 3 was obtained.
【００３８】実施例８ 実施例１と同じ組成の繊維を混綿し、カーディングを行
ってウェブを作製した後、赤外線ヒータの輻射熱による
間接的な加熱処理を両面より施し、特に片面の加熱温度
をもう一方の片面より高くすることにより片側表面を膜
状化し、さらに巾方向にカッティングする際に、カット
面に熱板を接触させることで側面の表面部分を膜状化
し、目付１５０ｇ／ｍ2、全体厚み１５ｍｍ、密度０．
０１ｇ／ｃｍ3の不織布断熱材を得た。Example 8 A web having the same composition as in Example 1 was mixed and carded to produce a web, and then subjected to indirect heat treatment from both sides by radiant heat of an infrared heater. By making it higher than the other one side, one side surface is formed into a film, and when cutting in the width direction, the cut surface is brought into contact with a hot plate to form a film on the side surface, and the basis weight is 150 g / m 2 , Total thickness 15 mm, density 0.
A nonwoven fabric heat insulating material of 01 g / cm 3 was obtained.
【００３９】比較例１ レギュラー機械捲縮ポリエステル繊維「３１０」（繊度
７ｄｔｅｘ、繊維長５１ｍｍ）４０重量％、レギュラー
機械捲縮ポリエステル繊維「３１０」（繊度１．６ｄｔ
ｅｘ、繊維長５１ｍｍ）４０重量％、芯鞘型の複合繊維
であってその鞘部を構成する繊維の融点が、レギュラー
機械捲縮ポリエステル繊維より融点が約１４０℃低いポ
リエステル繊維「４０８０」（ユニチカファイバー株式
会社製）（繊度２．２ｄｔｅｘ、繊維長５１ｍｍ）２０
重量％を混綿し、カーディングを行ってウェブを作製し
た後、通常の熱風循環による均一な加熱処理を繊維集合
体全体に施し、目付１５０ｇ／ｍ2、全体厚み１５ｍ
ｍ、密度０．０１ｇ／ｃｍ3の不織布断熱材を得た。Comparative Example 1 Regular mechanical crimped polyester fiber "310" (fineness 7 dtex, fiber length 51 mm) 40% by weight, regular mechanical crimped polyester fiber "310" (fineness 1.6 dt)
ex, fiber length 51 mm) 40% by weight, a core-sheath type conjugate fiber, wherein the melting point of the fiber constituting the sheath is about 140 ° C. lower than that of the regular mechanically crimped polyester fiber. (Manufactured by Fiber Corporation) (fineness: 2.2 dtex, fiber length: 51 mm) 20
After the web was prepared by blending and carding, the entire fiber assembly was subjected to a uniform heat treatment using ordinary hot air circulation to obtain a basis weight of 150 g / m 2 and a total thickness of 15 m.
m, a nonwoven fabric heat insulating material having a density of 0.01 g / cm 3 was obtained.
【００４０】次に不織布断熱材の性能評価の結果を示
す。性能評価は、この繊維集合体を断熱材として使用す
る場合の熱伝導率と吸音特性である。熱伝導率は、ＪＩ
Ｓ−Ａ−１４１２による平板直接法で測定した。吸音率
は、ＪＩＳ−Ａ１４０５による垂直入射吸音率であっ
て、Ｂｒｕｅｌ＆Ｋｊａｒ社製マルチチャンネル分析シ
ステム３５５０型（ソフトウェア：ＢＺ５０８７型２チ
ャンネル分析ソフトウェア）による２マイクロフォン法
で測定した。吸音率は、１０００Ｈｚ時で比較した。得
られた不織布断熱材の特性を表１に示す。Next, the results of the performance evaluation of the nonwoven fabric heat insulating material are shown. The performance evaluation is the thermal conductivity and sound absorption characteristics when this fiber assembly is used as a heat insulating material. Thermal conductivity is JI
It was measured by the direct plate method according to SA-1412. The sound absorption coefficient is a normal incidence sound absorption coefficient according to JIS-A1405, and was measured by a two-microphone method using a multi-channel analysis system Model 3550 manufactured by Bruel & Kjar (software: BZ5087 type two-channel analysis software). The sound absorption coefficient was compared at 1000 Hz. Table 1 shows the properties of the obtained nonwoven fabric heat insulating material.
【００４１】[0041]
【表１】 [Table 1]
【００４２】[0042]
【発明の効果】本発明はガラス繊維に替わる性能を有
し、更には、中空型構造繊維の使用および膜状物の効果
により断熱性能及び吸音性能にも優れた性能を有し、設
置作業性、作業環境を著しく改善した、特に使用条件が
過酷な自動車用、鉄道車両用、船舶用、床暖房用等建築
材料用などの断熱材に適した繊維集合体である。また、
本発明に開示した方法のうちポリエステル単一素材から
なる繊維集合体なら再び本発明の断熱材としてリサイク
ルができ、地球環境の保全にも極めて有用である。The present invention has a performance replacing glass fiber, and furthermore has excellent heat insulation performance and sound absorption performance due to the effect of the use of hollow structural fiber and the effect of a film-like material. It is a fiber assembly having a significantly improved working environment and particularly suitable for heat insulating materials for automobiles, railway vehicles, ships, floor heating, and other building materials under severe use conditions. Also,
Among the methods disclosed in the present invention, a fiber aggregate made of a single polyester material can be recycled as the heat insulating material of the present invention again, and is extremely useful for preserving the global environment.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 尾上 宏 大阪市北区梅田１丁目２番２号 カネボウ 合繊株式会社内 (72)発明者 永田 万亀男 大阪市北区梅田１丁目２番２号 カネボウ 合繊株式会社内 (72)発明者 福原 豊高 大阪市北区天満橋１丁目８番63号 エンデ バーハウス株式会社内 (72)発明者 米田 賢一 大阪市北区天満橋１丁目８番63号 エンデ バーハウス株式会社内 Ｆターム(参考） 2E001 DD01 DF04 FA03 FA11 FA16 GA28 GA29 HC00 HD00 4L047 AA21 AB02 AB10 BA08 BB06 CA02 CB06 CC10 DA00 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Onoe 1-2-2 Umeda, Kita-ku, Osaka Kanebo Synthetic Fiber Co., Ltd. (72) Inventor Mangeo Nagata 1-2-2 Umeda, Kita-ku, Osaka Kanebo Synthe Inside (72) Inventor Toyotaka Fukuhara 1-8-63 Tenmabashi, Kita-ku, Osaka-shi Endeavor House Co., Ltd. (72) Kenichi Yoneda 1-63, Tenmabashi, Kita-ku, Osaka-shi Endeavor House stock In-house F term (reference) 2E001 DD01 DF04 FA03 FA11 FA16 GA28 GA29 HC00 HD00 4L047 AA21 AB02 AB10 BA08 BB06 CA02 CB06 CC10 DA00
Claims (4)
材であって、該短繊維集合体がマトリックス繊維および
マトリックス繊維の融点よりも低い融点を有する成分を
含む低融点繊維からなり、該マトリックス繊維のうち少
なくとも１種類が中空型構造であることを特徴とする断
熱材。1. A heat insulating material comprising two or more types of short fiber aggregates, wherein said short fiber aggregates are composed of a matrix fiber and a low-melting fiber containing a component having a melting point lower than the melting point of the matrix fiber. A heat insulating material, wherein at least one of the matrix fibers has a hollow structure.
部の一部で実質的に接着しており、該繊維集合体の積層
面の表面及び／又は少なくとも１つの側面の表面部分が
膜状化していることを特徴とする請求項１記載の断熱
材。2. A low-melting fiber substantially adheres at a part of a contact portion between the fibers, and a surface portion of a laminating surface and / or a surface portion of at least one side surface of the fiber assembly is in a film form. The heat insulating material according to claim 1, wherein the heat insulating material is formed.
る請求項１又は２記載の断熱材。3. The heat insulating material according to claim 1, wherein the content of the low melting point fiber is 5 to 95 wt%.
材を製造するに際して、少なくとも１種類が中空型構造
であるマトリックス繊維およびマトリックス繊維の融点
よりも低い融点を有する成分を含む低融点繊維を混合
し、該低融点繊維により繊維相互間の接着部の一部で接
着させた繊維集合体とし、その後機械的及び／又は熱的
に処理を施して該繊維集合体の積層面の表面及び／又は
少なくとも１つの側面の表面部分を膜状化させることを
特徴とする断熱材の製造方法。4. A low-melting fiber comprising at least one kind of matrix fiber having a hollow structure and a component having a melting point lower than the melting point of the matrix fiber when producing a heat insulating material comprising two or more kinds of short fiber aggregates. Are mixed to form a fiber assembly bonded at a part of the bonding portion between the fibers by the low-melting fiber, and then subjected to a mechanical and / or thermal treatment to provide a surface of the laminated surface of the fiber assembly and And / or a method for producing a heat insulating material, characterized in that at least one side surface portion is formed into a film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001224044A JP4743676B2 (en) | 2000-08-03 | 2001-07-25 | Insulation |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000235295 | 2000-08-03 | ||
| JP2000235295 | 2000-08-03 | ||
| JP2000-235295 | 2000-08-03 | ||
| JP2001224044A JP4743676B2 (en) | 2000-08-03 | 2001-07-25 | Insulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002115159A true JP2002115159A (en) | 2002-04-19 |
| JP4743676B2 JP4743676B2 (en) | 2011-08-10 |
Family
ID=26597271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001224044A Expired - Lifetime JP4743676B2 (en) | 2000-08-03 | 2001-07-25 | Insulation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4743676B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006307608A (en) * | 2005-04-26 | 2006-11-09 | Endeavor House Ltd | Sound-absorbing and heat-insulating material |
| JP2008014115A (en) * | 2006-07-04 | 2008-01-24 | Endeavor House Ltd | Heat insulating and sound absorbing material for house with excellent cutting property and retractility |
| JP2008121395A (en) * | 2006-11-14 | 2008-05-29 | Endeavor House Ltd | Sound absorbing material for railroad having excellent elasticity |
| JP2009534553A (en) * | 2006-04-27 | 2009-09-24 | ダウ グローバル テクノロジーズ インコーポレイティド | Polymer fiber insulated bat for residential and commercial building applications |
| JP2017534521A (en) * | 2014-10-30 | 2017-11-24 | オートニアム マネジメント アクチエンゲゼルシャフトＡｕｔｏｎｅｕｍ Ｍａｎａｇｅｍｅｎｔ ＡＧ | Automotive fiber coating |
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| JPH08188946A (en) * | 1995-01-09 | 1996-07-23 | Toray Ind Inc | Formed article of fiber and its production |
| JPH0931815A (en) * | 1995-05-18 | 1997-02-04 | Chisso Corp | Fiber aggregate and its production |
| JPH08327078A (en) * | 1995-05-31 | 1996-12-10 | Sharp Corp | Electric carpet |
| JPH09273037A (en) * | 1996-02-09 | 1997-10-21 | Chisso Corp | Tow |
| JPH09241956A (en) * | 1996-03-04 | 1997-09-16 | Toyobo Co Ltd | Heat insulator for hot carpet |
| JPH09324357A (en) * | 1996-06-04 | 1997-12-16 | Kanebo Ltd | Nonwoven fabric molded product |
| JPH1095060A (en) * | 1996-09-25 | 1998-04-14 | Kanebo Ltd | Automobile body panel insulator |
| WO1999043903A1 (en) * | 1998-02-26 | 1999-09-02 | Kanebo Limited | Heat-insulating material for houses and method of using the same |
| JP2000096497A (en) * | 1998-09-22 | 2000-04-04 | Kanebo Ltd | Fiber-made formed body and its production |
| JP2000199161A (en) * | 1999-01-11 | 2000-07-18 | Kanebo Ltd | Sound-absorbing nonwoven fabric and its production |
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| JP2006307608A (en) * | 2005-04-26 | 2006-11-09 | Endeavor House Ltd | Sound-absorbing and heat-insulating material |
| JP2009534553A (en) * | 2006-04-27 | 2009-09-24 | ダウ グローバル テクノロジーズ インコーポレイティド | Polymer fiber insulated bat for residential and commercial building applications |
| JP2008014115A (en) * | 2006-07-04 | 2008-01-24 | Endeavor House Ltd | Heat insulating and sound absorbing material for house with excellent cutting property and retractility |
| JP2008121395A (en) * | 2006-11-14 | 2008-05-29 | Endeavor House Ltd | Sound absorbing material for railroad having excellent elasticity |
| JP2017534521A (en) * | 2014-10-30 | 2017-11-24 | オートニアム マネジメント アクチエンゲゼルシャフトＡｕｔｏｎｅｕｍ Ｍａｎａｇｅｍｅｎｔ ＡＧ | Automotive fiber coating |
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