JPH1072758A - Weatherable nonwoven fabric and erosion-controlling sheet - Google Patents
Weatherable nonwoven fabric and erosion-controlling sheetInfo
- Publication number
- JPH1072758A JPH1072758A JP8222258A JP22225896A JPH1072758A JP H1072758 A JPH1072758 A JP H1072758A JP 8222258 A JP8222258 A JP 8222258A JP 22225896 A JP22225896 A JP 22225896A JP H1072758 A JPH1072758 A JP H1072758A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- asphalt
- weather
- resistant
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Nonwoven Fabrics (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Laminated Bodies (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、優れた耐候性、透
水性および通気性を同時に満足する耐候性不織布および
防砂シートに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather-resistant nonwoven fabric and a sandproof sheet which simultaneously satisfy excellent weather resistance, water permeability and air permeability.
【０００２】[0002]
【従来の技術】従来、不織布の耐候性を向上させる方策
として、耐候性の高い素材を使用したり、カーボンブラ
ックを含有させたものが使用されている。しかしなが
ら、近年のオゾン層破壊によって、紫外線の地表への到
達量が増加し、耐候性に強いとされる素材でも紫外線劣
化が大きく、またカーボンブラックの含有率は生産性の
都合上、繊維重量に対し数％以下であり耐候性はさほど
向上しない。また、特開昭４８−６９３２５号公報、特
開昭５３−８１５２３号公報、特開昭５３−１０１０５
３号公報、特開昭６２−２４３８８３号公報のように不
織布にアスファルトを含浸させる公知例はあるものの、
これらは防水シートとして用いられるもので、例えば、
防砂シートのように透水性を必要とされる用途には適用
できない。2. Description of the Related Art Conventionally, as a measure for improving the weather resistance of a nonwoven fabric, a material having high weather resistance or a material containing carbon black has been used. However, due to the recent destruction of the ozone layer, the amount of ultraviolet rays reaching the ground surface has increased, and even materials that are considered to have strong weather resistance are greatly deteriorated by ultraviolet rays. On the other hand, it is less than a few%, and the weather resistance does not improve so much. Also, JP-A-48-69325, JP-A-53-81523, and JP-A-53-10105
No. 3, JP-A-62-243883, there are known examples of impregnating non-woven fabric with asphalt,
These are used as waterproof sheets, for example,
It cannot be applied to applications requiring water permeability, such as sandproof sheets.
【０００３】また、近年河川や海岸の護岸工事に、陸側
の土と水側のコンクリートブロックや砕石の間に、土粒
子の水側への流出防止のために繊維シートを敷設してい
る。この繊維シートは防砂シートと呼ばれ、不織布が一
般的に用いられている。しかし、不織布を敷設した状態
で長期間放置していると、紫外線によって繊維が劣化し
防砂シートとしての機能が果たせなくなるという欠点が
あった。In recent years, fiber sheets have been laid between the soil on the land side and concrete blocks or crushed stones on the water side to prevent the outflow of soil particles to the water side in revetment works on rivers and coasts. This fiber sheet is called a sandproof sheet, and a nonwoven fabric is generally used. However, if left unattended for a long period of time with the nonwoven fabric laid, there is a disadvantage that the fibers are deteriorated by the ultraviolet rays and the function as a sandproof sheet cannot be achieved.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記従来技
術の欠点に鑑み、透水性および通気性を同時に満足する
優れた耐候性不織布および防砂シートを提供せんとする
ものである。SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an excellent weather-resistant nonwoven fabric and a sandproof sheet which simultaneously satisfy water permeability and air permeability.
【０００５】[0005]
【課題を解決するための手段】本発明は、かかる課題を
解決するために、次のような手段を採用する。すなわ
ち、本発明の耐候性不織布は、アスファルトを含有する
着色不織布であって、かつ、該不織布が透水性を有する
ことを特徴とするものである。The present invention employs the following means in order to solve the above problems. That is, the weather-resistant nonwoven fabric of the present invention is a colored nonwoven fabric containing asphalt, and the nonwoven fabric has water permeability.
【０００６】また、本発明の防砂シートは、かかる耐候
性不織布で構成されていることを特徴とするものであ
る。Further, the sandproof sheet of the present invention is characterized in that it is made of such a weather-resistant nonwoven fabric.
【０００７】[0007]
【発明の実施の形態】本発明は、上述の課題、すなわ
ち、透水性および通気性を同時に満足する優れた耐候性
不織布を提供するために、鋭意検討したところ、アスフ
ァルトを不織布に含有させて着色したところ、意外にも
上述の課題を一挙に解決する不織布を提供することがで
きることを究明したものである。BEST MODE FOR CARRYING OUT THE INVENTION In order to provide an excellent weather-resistant nonwoven fabric which simultaneously satisfies the above-mentioned problems, that is, water permeability and air permeability, the present inventors have conducted intensive studies and found that asphalt is contained in the nonwoven fabric and colored. As a result, they have surprisingly found that a nonwoven fabric that can solve the above-mentioned problems at once can be provided.
【０００８】本発明の不織布を構成する繊維は、概して
ポリエステル、ポリアミド、ポリプロピレン、ポリフェ
ニルサルファイド、フッ素系樹脂などからなる繊維が好
ましい。また、これらの繊維は長繊維か短繊維で構成さ
れた不織布が使用される。さらに、これらの繊維の中で
も、強度特性が要求される場合には、長繊維で構成され
た不織布が好ましく使用される。The fibers constituting the nonwoven fabric of the present invention are generally preferably fibers made of polyester, polyamide, polypropylene, polyphenyl sulfide, fluororesin or the like. Further, as these fibers, a nonwoven fabric composed of long fibers or short fibers is used. Further, among these fibers, when strength characteristics are required, a nonwoven fabric composed of long fibers is preferably used.
【０００９】かかる不織布を構成する繊維の単糸繊度
は、不織布が要求される物性、特に強度と透水性の上か
ら、好ましくは１〜１０ｄの範囲のものがよい。単糸繊
度が１ｄ未満の場合は不織布の空隙率が小さくなり透水
性能が劣る傾向にある。単糸繊度が１０ｄより大きくな
ると、強度は高くなるが嵩高になり不織布の厚みが大き
くなるとともに、アスファルトの付着性が悪くなる。な
お、本発明の不織布において、使用する繊維として異繊
度のものを混用し、その平均単糸繊度が上記範囲のもの
であってもさしつかえない。かかる不織布の目付は１０
０〜１０００ｇ／ｍ2 、さらに好ましくは２００〜６０
０ｇ／ｍ2 が好ましい。不織布の目付が１００ｇ／ｍ2
より小さくなると、引張、引裂強力が低くなり土木工事
用としては適さない。逆に１０００ｇ／ｍ2 より大きく
なると不織布の空隙が小さくなり、透水性能が劣る傾向
にある。また、かかる不織布の厚みは緩衝性の上から、
好ましくは１ｍｍ以上、さらに好ましくは２〜６ｍｍが
好ましい。The single-fiber fineness of the fibers constituting such a nonwoven fabric is preferably in the range of 1 to 10 d from the viewpoint of physical properties required for the nonwoven fabric, particularly strength and water permeability. When the single yarn fineness is less than 1 d, the porosity of the nonwoven fabric tends to be small, and the water permeability tends to be poor. If the single yarn fineness is larger than 10d, the strength is increased but the bulk is increased, the thickness of the nonwoven fabric is increased, and the asphalt adhesion is deteriorated. In the nonwoven fabric of the present invention, fibers having different fineness may be mixed as the fibers to be used, and the average single yarn fineness may be in the above range. The basis weight of such a nonwoven fabric is 10
0 to 1000 g / m 2 , more preferably 200 to 60 g / m 2
0 g / m 2 is preferred. Nonwoven fabric weight is 100 g / m 2
If it is smaller, the tensile and tear strengths are low, and it is not suitable for civil engineering. Conversely, if it is more than 1000 g / m 2, the voids of the nonwoven fabric become small, and the water permeability tends to be poor. In addition, the thickness of such non-woven fabrics is
It is preferably at least 1 mm, more preferably 2 to 6 mm.
【００１０】また、上記不織布は均一な繊維密度や同一
単糸繊度を有する繊維で構成された不織布について記載
したものであるが、本発明においては、かかる不織布と
しては、別に異繊度の繊維からなる不織布であっても、
また、密度の異なる不織布からなる積層体であっても、
また、補強織物や補強網状物との積層体であってもよ
く、さらにはこれらの混合混成した不織布でも良い。The nonwoven fabric described above is a nonwoven fabric composed of fibers having a uniform fiber density and the same single-filament fineness. In the present invention, such a nonwoven fabric is composed of fibers of different fineness. Even for non-woven fabrics,
Further, even in the case of a laminate made of nonwoven fabrics having different densities,
Further, it may be a laminate with a reinforcing woven fabric or a reinforcing mesh, or a nonwoven fabric which is a mixture of these.
【００１１】本発明の耐候性不織布においては、透水係
数を１０-3ｃｍ／ｓｅｃ以上となるようにアスファルト
を付着させることが好ましい。防砂シートとして用いる
時には、不織布を水中に沈めて敷設するため、透水係数
が１０-3ｃｍ／ｓｅｃより小さくなると、著しく不織布
の敷設時の沈降性が悪くなり、不織布の敷設作業に手間
や時間が掛かってしまう傾向があるので好ましくない。In the weather-resistant nonwoven fabric of the present invention, it is preferable to attach asphalt so that the water permeability is 10 -3 cm / sec or more. When used as a sandproof sheet, the nonwoven fabric is submerged in water and laid. Therefore, when the water permeability is less than 10 −3 cm / sec, the sedimentation of the nonwoven fabric at the time of laying is significantly deteriorated, and labor and time for laying the nonwoven fabric are reduced. It is not preferable because it tends to be hung.
【００１２】次に、本発明におけるアスファルトは、道
路舗装用に用いられるアスファルトやアスファルト乳剤
などを使用することができるが、これに限られるもので
はない。かかるアスファルトは、該不織布を構成する繊
維重量に対して、１０〜６０％の範囲で付着しているこ
とが好ましい。ここで該繊維重量とは、不織布やその他
の補強繊維製品を含めた総重量である。アスファルトの
付着量が繊維重量に対して１０％未満になると、アスフ
ァルトの付着量が少なすぎて耐候性の向上が少なく抑え
られる傾向があり、逆に６０％を越えると繊維の空隙が
アスファルトで満たされるため、透水性が低下する傾向
にある。また、透水性に優れた機能を発揮させるには、
アスファルトを不織布の表面に偏らせて付着させるのが
好ましい。不織布へのアスファルトの付着方法について
は、現場でスプレーなどで不織布の表面に吹きつける方
法や、工場で不織布を生産する時にアスファルトを含浸
させた繊維で不織布を作成する方法がある。新しく工事
を行う現場については、後者が好ましいが、既に工事が
終わっていて部分的に曝露されている箇所の耐候性能の
向上対策としては前者が好ましい。Next, asphalt in the present invention may be asphalt or asphalt emulsion used for road pavement, but is not limited thereto. It is preferable that such asphalt is attached in a range of 10 to 60% based on the weight of the fiber constituting the nonwoven fabric. Here, the fiber weight is the total weight including the nonwoven fabric and other reinforcing fiber products. If the amount of asphalt attached is less than 10% based on the weight of the fiber, the amount of asphalt attached is too small and the improvement in weather resistance tends to be suppressed. Conversely, if it exceeds 60%, the voids in the fiber are filled with asphalt. Therefore, the water permeability tends to decrease. In addition, in order to demonstrate the function excellent in water permeability,
It is preferred that the asphalt be attached to the surface of the nonwoven fabric in a biased manner. As to the method of attaching asphalt to the nonwoven fabric, there are a method of spraying the surface of the nonwoven fabric with a spray or the like on site, and a method of producing a nonwoven fabric with asphalt-impregnated fibers when producing the nonwoven fabric at a factory. For the site where a new construction is performed, the latter is preferable, but the former is preferable as a measure for improving the weather resistance of a part that has already been completed and is partially exposed.
【００１３】また、アスファルトを付着させた不織布そ
のものの柔軟性は、ＪＩＳ Ｌ−１０９６ガーレ式剛軟
度で測定したとき、４００００ｍｇ以下のものが好まし
い。これは、通常不織布がロール状にして形状で、運搬
され、主として現場で施工されるためであり、該アスフ
ァルトを含有させた不織布のガーレ式剛軟度が４０００
０ｍｇを越えると、不織布のハンドリング性が著しく低
下してしまう。また、不織布と、基礎地盤や護岸構造体
の不陸部との追従性も低下してしまい、さらには施工性
も悪化することがある。The flexibility of the nonwoven fabric to which asphalt is attached is preferably 40000 mg or less as measured by JIS L-1096 Gurley-type softness. This is because the nonwoven fabric is usually rolled, transported in a shape, and is mainly constructed on site, and the nonwoven fabric containing the asphalt has a Gurley-type softness of 4000.
If it exceeds 0 mg, the handleability of the nonwoven fabric will be significantly reduced. In addition, the ability to follow the non-woven fabric and the uneven ground portion of the foundation ground or seawall structure is reduced, and the workability may be further deteriorated.
【００１４】また、アスファルトを付着させた不織布と
して、アスファルトを不織布の表面に偏らせて付着させ
ると、不織布表面の繊維の毛羽立ちがなくなる利点があ
る上に、アスファルトによって繊維の結合力が強くな
り、引張強力、引裂強力、さらに貫通強力を向上するこ
とができるという利点が惹起する。それゆえ、防砂シー
トに使用する際には、かかる表面層に偏ってアスファル
トを含有する不織布が好ましく、かかる不織布によれ
ば、波浪により不織布を構成する繊維が砕石に絡まって
破損することがないという利点もある。When asphalt is adhered to the surface of the nonwoven fabric as a nonwoven fabric to which asphalt is adhered, there is the advantage that the fibers on the surface of the nonwoven fabric are not fluffed, and the asphalt increases the bonding force of the fibers. This brings about an advantage that the tensile strength, the tear strength, and the penetration strength can be improved. Therefore, when used for a sandproof sheet, a nonwoven fabric containing asphalt is preferable to such a surface layer, and according to such a nonwoven fabric, the waves constituting the nonwoven fabric are not entangled with crushed stones and are not broken. There are advantages too.
【００１５】[0015]
【実施例】以下、実施例により本発明をさらに詳細に説
明する。The present invention will be described in more detail with reference to the following examples.
【００１６】実施例１ 熱可塑性ポリエステル樹脂を溶融紡糸し、それと同時に
空気の高速気流によって連続フィラメントを延伸しかつ
コンベヤー上に撤布し、そこに堆積して嵩高なシートを
形成させ、そしてニードルパンチングを施した、単糸繊
度３．０ｄ、目付３００ｇ／ｍ2 、厚さ３ｍｍのスパン
ボンドポリエステル長繊維不織布を得、アスファルトを
付着させた。付着は以下のように実施した。EXAMPLE 1 A thermoplastic polyester resin is melt spun while a continuous filament is drawn by a high velocity air stream and broken down on a conveyor, deposited there to form a bulky sheet, and needle punched. , A spunbond polyester long-fiber nonwoven fabric having a single-fiber fineness of 3.0 d, a basis weight of 300 g / m 2 , and a thickness of 3 mm was obtained, and asphalt was attached thereto. The attachment was performed as follows.
【００１７】不織布シートに、針入度１００のカチオン
系アスファルト乳剤を１３０℃で溶融させて、不織布シ
ート繊維表面（上面のみ）にスプレー噴霧塗布し、繊維
重量に対して２０％（６０ｇ／ｍ2 ）付着させた後に放
冷して、アスファルトを付着させた不織布シートを製造
した。このシートの断面及び表面をビデオハイスコープ
システムにて拡大して確認したところ、不織布シートの
厚みが３ｍｍに対して、アスファルトの付着深さは０．
３ｍｍと表面のみに付着していた。また、繊維の表面に
アスファルトが均一に付着しており、繊維の空隙にアス
ファルトが固着している様子は見られなかった。A cationic asphalt emulsion having a penetration of 100 is melted at 130 ° C. on a non-woven fabric sheet, spray-coated on the fiber surface (only the upper surface) of the non-woven fabric sheet, and is 20% (60 g / m 2 ) based on the fiber weight. ) After being attached, the mixture was allowed to cool to produce a nonwoven sheet to which asphalt was attached. The cross section and the surface of this sheet were enlarged and confirmed by a video high scope system.
3 mm and adhered only to the surface. In addition, asphalt was uniformly attached to the surface of the fiber, and no appearance of asphalt fixed in the voids of the fiber was observed.
【００１８】このようにして得られたアスファルトを付
着させた不織布シートの耐候性不織布シート、および防
砂シート護岸構造体としての性能を評価し、その結果を
表１に示した。The performance of the thus obtained nonwoven sheet to which the asphalt was adhered was evaluated as a weather-resistant nonwoven sheet and a sandproofing sheet revetment structure, and the results are shown in Table 1.
【００１９】比較例１ 実施例１において使用した単糸繊度３．０ｄ、目付３０
０ｇ／ｍ2 、厚さ３ｍｍのスパンボンドポリエステル長
繊維不織布を単体で使用した。（アスファルトの付着な
し） 比較例２ 比較例１の不織布として、カーボンブラックを１ｍ2 当
りの１．２ｇ（１ｍ2当りの繊維重量に対して０．４
％）含有させた繊維を使用した。Comparative Example 1 The single yarn fineness used in Example 1 was 3.0 d, and the basis weight was 30.
A spunbond polyester long-fiber nonwoven fabric having a thickness of 0 g / m 2 and a thickness of 3 mm was used alone. 0.4 as nonwoven fabric (adhesion without asphalt) Comparative Example 2 Comparative Example 1, the carbon black based on fiber weight of 1.2 g (1 m 2 per per 1 m 2
%) Was used.
【００２０】これら３水準について、耐候性について
は、ＪＩＳ Ｌ−１０９６耐候性試験に基づきサンシャ
インカーボンアーク燈形耐候性試験機を用いて評価を行
い、強度特性については、ＪＩＳ Ｌ−１９０６一般長
繊維不織布試験方法に基づき評価を行った。For these three levels, the weather resistance was evaluated using a sunshine carbon arc lamp type weather resistance tester based on JIS L-1096 weather resistance test, and the strength characteristics were evaluated according to JIS L-1906 general long fiber Evaluation was performed based on the nonwoven fabric test method.
【００２１】防砂シートとしての評価方法については、
人工的に波を引き起こす造波水槽で波浪と割栗石の摩擦
によるシートの破損を確認した。図４に示すように水槽
内に実海堤防を想定した堤防を割栗石（粒径１５〜３０
ｃｍ）で作り（水深６８ｃｍ）、こののり面（のり勾配
１：１．２）にシートを敷設して波を引き起こした（波
高：３４ｃｍ、波長：１．４ｍ、波浪回数：４３２００
回／日）。実海での試験結果と、造波水槽での試験結果
のサンプル破損状態から、造波水槽での試験結果、２４
時間稼働すると実海での１ヶ月に相当することがわかっ
た。Regarding the evaluation method as a sandproof sheet,
In the wave-making water tank that caused waves artificially, it was confirmed that the sheet was damaged by the friction between the waves and the cracked stone. As shown in FIG. 4, a dike assuming a real sea dike was placed in a water tank and a ripened stone (particle size: 15-30)
cm) (water depth: 68 cm), and a sheet was laid on this slope (gradient: 1: 1.2) to generate waves (wave height: 34 cm, wavelength: 1.4 m, number of waves: 43200).
Times / day). From the test results in the actual sea and the sample damage state of the test results in the wave making tank, the test results in the wave making tank, 24
It turned out that the operation for hours corresponds to one month in the real sea.
【００２２】[0022]
【表１】 [Table 1]
【表２】 表１、２から明らかのように実施例１の耐候性不織布シ
ートは、不織布単体と比較して、著しい耐候性向上効果
がみられた。また、実施例１の剛軟度は不織布単体と比
較すれば数値は高くでているが、不織布単体がかなり柔
らかいものであり、現場での施工性については全く問題
ないレベルの剛軟度である。[Table 2] As is clear from Tables 1 and 2, the weather-resistant nonwoven fabric sheet of Example 1 exhibited a remarkable effect of improving the weather resistance as compared with the nonwoven fabric alone. Although the numerical value of the bristles of Example 1 is higher than that of the nonwoven fabric alone, the nonwoven fabric itself is considerably soft, and has a level of flexibility that does not cause any problem in workability at the site. .
【００２３】さらに、実施例１は透水係数のオーダーが
１０-2cm/secであり、砂と同程度の高い透水性を保有し
ており、透水性が必要とされる防砂シートに使用するの
にはなんら問題ないレベルであった。Further, in Example 1, the order of the water permeability is 10 -2 cm / sec, and the water permeability is as high as that of sand. Had no problem at all.
【００２４】沈降性についても従来品とほぼ同レベルで
あり、施工性についても問題ない、また、表１の造波水
槽での試験結果、実施例１は比較例１、２と比較して著
しい耐久性向上効果がみられた。The sedimentation property is almost the same level as that of the conventional product, and there is no problem in workability. Further, the test results in the wave-making water tank shown in Table 1 show that Example 1 is remarkably compared with Comparative Examples 1 and 2. The effect of improving durability was observed.
【００２５】[0025]
【発明の効果】本発明によれば、耐候性、透水性に優れ
た不織布を、それも従来の不織布の特性を保持したまま
提供し得、さらに紫外線に長期間暴露され、しかも、透
水性を必要とされる場所に使用することができる。According to the present invention, a nonwoven fabric having excellent weather resistance and water permeability can be provided while maintaining the characteristics of the conventional nonwoven fabric, and can be exposed to ultraviolet rays for a long period of time, and furthermore, the water permeability can be improved. Can be used where needed.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｄ０６Ｍ 13/06 Continued on the front page (51) Int.Cl. 6 Identification number Agency reference number FI Technical display location D06M 13/06
Claims (11)
って、かつ、該不織布が透水性を有することを特徴とす
る耐候性不織布。1. A weather-resistant nonwoven fabric which is a colored nonwoven fabric containing asphalt, and wherein the nonwoven fabric has water permeability.
定される定水位透水試験法に基づいて測定される透水係
数が１０-3ｃｍ／ｓｅｃ以上の透水性を有するものであ
る請求項１記載の耐候性不織布。2. The nonwoven fabric according to claim 1, wherein the nonwoven fabric has a water permeability of 10 −3 cm / sec or more measured based on a constant water level test method specified in JIS A-1218. Weatherproof non-woven fabric.
表面に付着している請求項１記載の耐候性不織布。3. The weather-resistant nonwoven fabric according to claim 1, wherein the asphalt is attached to at least a surface of the nonwoven fabric.
維の表面に付着している請求項１記載の耐候性不織布。4. The weather-resistant nonwoven fabric according to claim 1, wherein the asphalt is attached to the surface of a fiber constituting the nonwoven fabric.
０〜６０％の範囲内で付着している請求項１〜４のいず
れかに記載の耐候性不織布。5. The method according to claim 1, wherein the asphalt has a fiber weight of 1%.
The weather-resistant nonwoven fabric according to any one of claims 1 to 4, wherein the nonwoven fabric adheres within a range of 0 to 60%.
請求項１〜５のいずれかに記載の耐候性不織布。6. The weather-resistant nonwoven fabric according to claim 1, wherein the nonwoven fabric is a spunbonded nonwoven fabric.
の目付を有するものである請求項１〜６のいずれかに記
載の耐候性不織布。7. The non-woven fabric according to claim 1, wherein the non-woven fabric has a thickness of 100 to 1000 g / m 2.
The weather-resistant nonwoven fabric according to any one of claims 1 to 6, which has a basis weight of:
の範囲の単糸繊度を有するものである請求項１〜７のい
ずれかに記載の耐候性不織布シ−ト。8. The fiber constituting the nonwoven fabric is 1 to 10 d.
The weather-resistant nonwoven sheet according to any one of claims 1 to 7, having a single-fiber fineness in the range of:
６に規定されるガ−レ法に基づいて測定される剛軟度が
４００００ｍｇ以下の硬さを有するものである請求項１
〜８のいずれかに記載の耐候性不織布。9. The nonwoven fabric according to JIS L-109.
6. The composition according to claim 1, which has a hardness of 40,000 mg or less as measured by the Gurley method.
The weather-resistant nonwoven fabric according to any one of Items 1 to 8,
性不織布で構成されていることを特徴とする防砂シー
ト。10. A sandproof sheet comprising the weather-resistant nonwoven fabric according to any one of claims 1 to 9.
ルトを含有するものである請求項１０記載の防砂シー
ト。11. The sandproofing sheet according to claim 10, wherein the nonwoven fabric contains asphalt unevenly in the surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22225896A JP3674173B2 (en) | 1996-08-23 | 1996-08-23 | Weatherproof nonwoven fabric and sandproof sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22225896A JP3674173B2 (en) | 1996-08-23 | 1996-08-23 | Weatherproof nonwoven fabric and sandproof sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1072758A true JPH1072758A (en) | 1998-03-17 |
| JP3674173B2 JP3674173B2 (en) | 2005-07-20 |
Family
ID=16779579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22225896A Expired - Fee Related JP3674173B2 (en) | 1996-08-23 | 1996-08-23 | Weatherproof nonwoven fabric and sandproof sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3674173B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002129472A (en) * | 2000-08-18 | 2002-05-09 | Toyobo Co Ltd | Weather-resistant nonwoven fabric |
| JP2019120013A (en) * | 2017-12-28 | 2019-07-22 | 日建工学株式会社 | Sucking preventing sheet and manufacturing method of the same |
-
1996
- 1996-08-23 JP JP22225896A patent/JP3674173B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002129472A (en) * | 2000-08-18 | 2002-05-09 | Toyobo Co Ltd | Weather-resistant nonwoven fabric |
| JP2019120013A (en) * | 2017-12-28 | 2019-07-22 | 日建工学株式会社 | Sucking preventing sheet and manufacturing method of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3674173B2 (en) | 2005-07-20 |
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