JPH07157960A - Filament nonwoven fabric having excellent dimensional stability and water-proofing article made thereof - Google Patents
Filament nonwoven fabric having excellent dimensional stability and water-proofing article made thereofInfo
- Publication number
- JPH07157960A JPH07157960A JP5339139A JP33913993A JPH07157960A JP H07157960 A JPH07157960 A JP H07157960A JP 5339139 A JP5339139 A JP 5339139A JP 33913993 A JP33913993 A JP 33913993A JP H07157960 A JPH07157960 A JP H07157960A
- Authority
- JP
- Japan
- Prior art keywords
- woven fabric
- fiber
- nonwoven fabric
- fibers
- polyethylene terephthalate
- 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
Links
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Artificial Filaments (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高層構築物を始めとす
る建築物防水工事に用いられるアスファルトルーフィン
グや塗膜防水層の補強布及び、道路舗装、橋梁、地下
鉄、共同溝防水等土木防水工事用のアスファルトルーフ
ィング、その他防水層補強布として、優れた（熱時）対
応力寸法安定性を有し、防水層製造工程における幅入り
発生等がなく優秀な操業加工性を有し、又、優れた施工
操業性をも有して、優れた補強効果と耐久性及び寸法安
定性の防水層を提供する防水層用補強布に関するもので
ある。FIELD OF THE INVENTION The present invention relates to a reinforcing cloth for asphalt roofing and waterproof film for waterproofing of buildings such as high-rise structures, and civil engineering waterproofing work such as road pavement, bridge, subway, common groove waterproofing. As an asphalt roofing and other waterproof layer reinforced cloth, it has excellent dimensional stability (corresponding to heat) and has excellent workability without the occurrence of a width in the waterproof layer manufacturing process. The present invention also relates to a waterproof fabric for a waterproof layer, which also has a construction operability and provides a waterproof layer having an excellent reinforcing effect, durability and dimensional stability.
【０００２】[0002]
【従来の技術】近来の構築物の高築化及び施工法に於け
る進展にともなう防水工事の耐久性、安定性、施工性向
上に対する要求に対応すべく、アスファルトルーフィン
グや塗膜防水層用補強布として、特開昭６０−７１７７
８号公報に記載されるようなポリエステル長繊維よりな
りニードルパンチングにより立体的に交絡され、更に熱
硬化性接着剤で接着されたランダムループ組織の長繊維
不織布や、ポリヴィニールアルコール長繊維（ヴィニロ
ン）のトウ開繊方式による長繊維不織布が開発され実用
化されているが、前者においては、不織布構成組織に基
づく特徴、即ち、優れた強靭性を有し補強効果もよい
が、反面熱時の引っ張り弾性率がやや低いという問題
点、及び、比較的細いデニールで不織布が構成されるた
め、防水剤の含浸速度が小さいという問題点があり、後
者においては、高強力であるが若干強靭性に欠けるとい
う問題点があり、この目的達成のために、例えば特公昭
６２−４９３９８号公報に示されるがように、直交配列
組織のスパンボンド法による長繊維不織布を熱硬化性接
着剤で接着した不織布が開発されている。2. Description of the Related Art Reinforcement cloth for asphalt roofing and coating waterproof layer to meet the demands for durability, stability, and workability improvement of waterproofing work due to the recent progress of construction of construction and progress in construction method. As JP-A-60-7177
Polyester filaments as described in Japanese Patent Publication No. 8 and three-dimensionally entangled by needle punching, and a filamentous non-woven fabric having a random loop structure and further bonded with a thermosetting adhesive, or polyvinyl alcohol alcohol filaments (vinylon). A long-fiber nonwoven fabric by the toe opening method has been developed and put into practical use.In the former, the characteristics based on the structure of the nonwoven fabric, that is, it has excellent toughness and a good reinforcing effect, but on the other hand, it is pulled when heated. There is a problem that the elastic modulus is a little low and a problem that the impregnation speed of the waterproofing agent is small because the nonwoven fabric is composed of relatively thin denier. In the latter, it is high strength but slightly lacks toughness. In order to achieve this object, for example, as shown in Japanese Patent Publication No. 62-49398, a spunbond method for orthogonally arranged textures is provided. Nonwoven long fiber nonwoven fabric bonded with a thermosetting adhesive by have been developed.
【０００３】しかしながら、特公昭６２−４９３９８号
公報に示される補強布においても、接着を熱硬化性接着
剤で行うことにもとづく問題点、即ちアスファルトルー
フィング製造工程における熱アスファルト含浸時に熱硬
化性接着剤が一部分解し異臭を発することや、接着剤使
用は、不織布の物性付与のために必要不可欠であるが、
一方補強用不織布の防水層補強効果は、補強用不織布構
成繊維量と不織布構成組織には依存するが、不織布目付
けには依存しない事実、即ち、単に不織布構成繊維の交
点間を接着するのみの接着剤では、不織布強さを増大し
ても防水層物性の補強には役立たないという事実より、
このようなタイプの接着剤を用いて接着した補強用不織
布には補強効率＝「補強能／目付け］に不満足な点が残
され、改善すべき点があった。However, even in the case of the reinforcing cloth disclosed in Japanese Patent Publication No. 62-49398, there is a problem based on the fact that the bonding is performed by the thermosetting adhesive, that is, the thermosetting adhesive is used during the hot asphalt impregnation in the asphalt roofing manufacturing process. Partly decomposes and emits an offensive odor, and the use of an adhesive is essential for imparting physical properties to the nonwoven fabric,
On the other hand, the effect of reinforcing the waterproof layer of the reinforcing non-woven fabric depends on the amount of the non-woven fabric constituting the reinforcing non-woven fabric and the structure of the non-woven fabric, but does not depend on the basis weight of the non-woven fabric. With the agent, the fact that increasing the strength of the non-woven fabric does not help to reinforce the physical properties of the waterproof layer,
Reinforcing efficiency = “reinforcing ability / unit weight” was left unsatisfactory in the reinforcing nonwoven fabric adhered using such a type of adhesive, and there was a point to be improved.
【０００４】また、従来ウレタン系塗膜防水に用いられ
ている長繊維不織布においては、例えば、２〜５デニー
ルの長繊維不織布を部分的な熱接着、ニードルパンチ等
の加工を施して市販されているが、上記従来技術の長繊
維不織布の場合、繊維デニールが細く、単位目付当たり
の厚み、即ち、密度が小さく、かつ繊維間の孔寸法が小
さくなり、高粘度のウレタン等が浸透するのに長時間を
要していた。また、繊維デニールのみ変更した場合、ニ
ードルパンチ等の加工を施しても、その接着面積点数が
少なくなり、所望の高いモジュラスの長繊維不織布が得
られなかった。In the long-fiber non-woven fabric conventionally used for waterproofing urethane-based coating films, for example, a long-fiber non-woven fabric having a denier of 2 to 5 is commercially available after being partially heat-bonded, needle-punched and the like. However, in the case of the above-mentioned conventional long-fiber nonwoven fabric, the fiber denier is thin, the thickness per unit weight is small, that is, the density is small, and the pore size between the fibers is small, so that high-viscosity urethane or the like penetrates. It took a long time. Further, in the case where only the fiber denier was changed, the number of bonded areas was reduced even if the processing such as needle punching was performed, and the desired high modulus long fiber non-woven fabric could not be obtained.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、従来の欠
点、即ち、ニードルパンチ、熱硬化性接着剤の加工によ
る低生産速度による製造原価の高騰、及びアスファル
ト、ウレタン含浸時の浸透速度の遅さを解消し、従来達
出来なかった優秀な補強能を有し、高い生産性と寸法安
定性と耐久性の高い防水層を形成する補強用不織布を提
供すること、従来品に勝るリサイクル可能なポリエステ
ル系アスファルトルーフィング製造工程における優秀な
加工操業性を有するアスファルトルーフィング補強用不
織布を提供すること、優秀な塗膜防水剤含浸性を有し施
工性に優れた塗膜防水層補強用不織布を提供することに
ある。DISCLOSURE OF THE INVENTION The present invention has the drawbacks of the prior art, namely, high production cost due to low production rate due to processing of needle punch, thermosetting adhesive, and slow penetration rate when impregnated with asphalt and urethane. To provide a non-woven fabric for reinforcement, which has a high productivity, dimensional stability, and a highly durable waterproof layer, and which has superior reinforceability that could not be achieved before, and is more recyclable than conventional products. Provide a non-woven fabric for reinforcing asphalt roofing that has excellent processing operability in the polyester-based asphalt roofing manufacturing process, and provide a non-woven fabric for reinforcing a waterproof film layer that has excellent impregnation with a waterproofing agent and has excellent workability. Especially.
【０００６】[0006]
【課題を解決するための手段】これら優秀な防水層形成
に必須の要求機能を満足させるには、次の諸要件を満足
する補強布を得ることが必要であることが明らかとなっ
た。本発明は、特許請求の範囲に記載した通り下記の構
成要件から構成され、次の通りの要件を満足する手段を
駆使し、解決すべき課題を解消し、優秀な防水層を形成
する補強用不織布を得ることに成功した。即ち、 (１)本発明の要件１．（補強用不織布構成要素） （１）繊維デニールが６デニール以上のポリエチレンテ
レフタレート又はポリエチレンテレフタレートを主成分
とした共重合体よりなる長繊維混繊不織布であること。 （２）又は、芯成分がポリエチレンテレフタレート又は
ポリエチレンテレフタレートを主成分とした共重合体よ
りなり、鞘成分がポリエチレンテレフタレート共重合体
又はポリブチレンテレフタレート或いは又この両者のブ
レンドポリマーよりなる、繊維デニールが６デニール以
上の複合フィラメントより構成される長繊維不織布であ
ること、It has become clear that it is necessary to obtain a reinforcing cloth that satisfies the following requirements in order to satisfy the required functions essential for forming these excellent waterproof layers. The present invention is composed of the following constituent elements as described in the claims, makes full use of means satisfying the following requirements, solves the problems to be solved, and forms a superior waterproof layer for reinforcement. Succeeded in obtaining a non-woven fabric. That is, (1) Requirements of the present invention (Structure of Nonwoven Fabric for Reinforcement) (1) A long fiber mixed non-woven fabric made of polyethylene terephthalate having a fiber denier of 6 denier or more or a copolymer containing polyethylene terephthalate as a main component. (2) Alternatively, the core component is made of polyethylene terephthalate or a copolymer containing polyethylene terephthalate as a main component, and the sheath component is made of polyethylene terephthalate copolymer, polybutylene terephthalate, or a blend polymer of the two, and the fiber denier is 6 A long-fiber non-woven fabric composed of denier or more composite filaments,
【０００７】要件１．(１)において、繊維デニールが６
デニール以上のポリエチレンテレフタレート又はポリエ
チレンテレフタレートを主成分とした共重合体よりなる
ことは、アスファルトルーフィング加工時に又は塗膜防
水剤塗布時に、アスファルト又は塗膜防水剤の良好な含
浸性を保証し良好な加工操業性を付与する基本的要件で
あり、不織布構成繊維デニールを６デニール以上とする
ことにより不織布に必要とする防水剤含浸速度を保証す
る嵩密度とポーラス度を付与出来るのである。例えば、
アスファルト及び塗膜防水用ウレタン等を含浸する必要
があるものについては、０．１ｍｍ〜１０ｍｍ程度の孔
サイズが適当と考えられる。一方、スパンボンド方法の
生産機ベースで、且つ現状品並の寸法安定性を有するた
めには、２０ｄ以下、すなわち６ｄ〜２０ｄの繊維で構
成するのが好ましく、１０ｄ〜１５ｄの範囲が更に好適
である。Requirement 1. In (1), the fiber denier is 6
Being made of polyethylene terephthalate of denier or more or a copolymer containing polyethylene terephthalate as the main component ensures good impregnation of the asphalt or the coating film waterproofing agent during asphalt roofing processing or coating film waterproofing agent application. It is a basic requirement for imparting operability, and by setting the denier of the fiber constituting the non-woven fabric to 6 denier or more, it is possible to provide the non-woven fabric with a bulk density and a porosity that guarantee the required impregnation rate of the waterproofing agent. For example,
For those that need to be impregnated with asphalt, urethane for coating film waterproofing, etc., a hole size of about 0.1 mm to 10 mm is considered appropriate. On the other hand, in order to have the same dimensional stability as the current product on the basis of the production machine of the spunbond method, it is preferable that the fiber is composed of 20d or less, that is, 6d to 20d, and the range of 10d to 15d is more preferable. is there.
【０００８】要件１．(２)において、芯成分がポリエチ
レンテレフタレート又はポリエチレンテレフタレートを
主成分とした共重合体よりなり、鞘成分がポリエチレン
テレフタレート共重合体又はポリブチレンテレフタレー
ト或いは又この両者のブレンドポリマーよりなる複合フ
ィラメントより構成される長繊維不織布であることは、
耐熱性の高い高度の物性を有する補強用不織布を得るた
めの条件であり、不織布構成繊維の主体を耐熱性が優秀
なポリエチレンテレフタレート又はポリエチレンテレフ
タレートを主成分とした共重合体にて形成せしめること
によりその目的を達成し得るのである。Requirement 1. In (2), the core component is composed of polyethylene terephthalate or a copolymer containing polyethylene terephthalate as a main component, and the sheath component is composed of a polyethylene terephthalate copolymer or polybutylene terephthalate or a composite filament composed of a blended polymer of both. Is a long-fiber non-woven fabric
It is a condition for obtaining a reinforcing non-woven fabric having a high degree of heat resistance, and by forming the main component of the non-woven fabric fiber with polyethylene terephthalate or a copolymer containing polyethylene terephthalate as the main component, which has excellent heat resistance. That purpose can be achieved.
【０００９】(２)本発明の要件２．（補強用不織布構成
要素） 接着成分構成繊維がポリエチレンテレフタレート共重合
体又はポリブチレンテレフタレート或いは又この両者の
ブレンドポリマー繊維よりなること。要件２は、補強効
率の高い補強用不織布を得るために必須の基本的要件の
一つである。即ち、防水層の補強効果は、補強用不織布
を構成する繊維の繊維量と不織布構成組織に依存し、不
織布目付けには一義的には依存しないことが見出され、
特公昭６２−４９３９８号公報に示されるような従来到
達不能であった補強効果を達成できた直交配列組織のス
パンボンド法長繊維不織布においても、接着を単に不織
布構成繊維の交点間を接着するだけの接着剤で接着した
ため、ここで用いた接着剤は不織布自体の物性向上には
効果的であるが、防水層に対する補強用不織布の補強効
率＝［補強効果／補強布目付け］の面においては、接着
剤は単に増量剤の役割しか演じることができず非効率的
であった。(2) Requirements of the present invention 2. (Structure of Nonwoven Fabric for Reinforcement) The constituent fiber of the adhesive component is made of polyethylene terephthalate copolymer, polybutylene terephthalate, or a blended polymer fiber of the both. Requirement 2 is one of the essential basic requirements for obtaining a reinforcing non-woven fabric having a high reinforcing efficiency. That is, it was found that the reinforcing effect of the waterproof layer depends on the fiber amount of the fibers constituting the reinforcing nonwoven fabric and the nonwoven fabric structure, and does not uniquely depend on the nonwoven fabric weight.
Even in a spunbond long-fiber non-woven fabric having an orthogonal array structure, which can achieve a reinforcing effect which was conventionally unattainable, as shown in Japanese Patent Publication No. 62-49398, the adhesion is simply performed by adhering the intersection points of the non-woven fabric constituent fibers. The adhesive used here is effective for improving the physical properties of the nonwoven fabric itself, but in terms of the reinforcing efficiency of the reinforcing nonwoven fabric for the waterproof layer = [reinforcing effect / reinforcing cloth weight], The adhesive was inefficient as it could only play the role of bulking agent.
【００１０】そこでこの改善のために、接着剤自体が、
不織布物性と防水層補強効果の両方に寄与できる、不織
布のロードベアリングコンポーネントであって且つ接着
能を有する芯鞘型複合繊維で非織性ウエッブを構成させ
るか、或いは又不織布構成繊維であって且つ接着能を有
する接着用繊維を不織布を構成する主体繊維と混繊して
不織布を形成せしめることにより、自己接着型の繊維と
し、特公昭６２−４９３９８号公報に示される方法の課
題を解消し、目的とする極めて補強効率の高い補強布開
発の重要な要素の解決に成功したのである。Therefore, in order to improve this, the adhesive itself is
A non-woven web composed of a core-sheath type composite fiber which is a non-woven load bearing component and has an adhesive ability that can contribute to both the physical properties of the non-woven fabric and the waterproof layer reinforcing effect, or a non-woven fabric constituent fiber, and By forming a non-woven fabric by mixing the adhesive fiber having adhesive ability with the main fiber constituting the non-woven fabric, the self-adhesive fiber is obtained, and the problems of the method disclosed in Japanese Patent Publication No. 62-49398 are solved. We have succeeded in solving the important element of the development of the target reinforcing cloth with extremely high reinforcing efficiency.
【００１１】接着成分に用いられるポリマーの融点につ
いては、後工程及び使用される環境温度より１０℃以
上、望ましくは１５℃以上で設計されるべきで、例え
ば、アスファルトルーフィング補強用基布としては、ア
スファルト含浸温度１８０〜２００℃のため、接着成分
の融点は、１９０〜２３０℃が好ましい。２３０℃以上
では、接着工程でのユーティリティ費、高温接着時に主
成分のポリエステル結晶を乱し、シート強力が低下しや
すくなる。The melting point of the polymer used as the adhesive component should be designed to be 10 ° C. or higher, preferably 15 ° C. or higher than the ambient temperature used in the subsequent steps and used. For example, as a base fabric for asphalt roofing reinforcement, Since the asphalt impregnation temperature is 180 to 200 ° C, the melting point of the adhesive component is preferably 190 to 230 ° C. If the temperature is 230 ° C. or higher, the utility cost in the bonding step and the polyester crystals as the main component are disturbed at the time of high temperature bonding, and the sheet strength is likely to decrease.
【００１２】(３)本発明の要件３．（補強用不織布構成
組織） （１）不織布の組織形態を、該不織布の幅方向切断面に
おける不織布構成繊維切断面形態が、厚み方向直径対幅
方向直径比率６０〜１２０％を示す切断面繊維本数を全
切断面繊維本数の５０％以上包含すように直交配列せし
めた長繊維不織布となしたこと。 （２）又は、不織布の幅方向切断面における不織布構成
繊維切断面形態が、厚み方向直径対幅方向直径比率８０
〜１２０％を示すものを６０％以上包含するように長手
方向に配列せしめた層と、該不織布の長手方向切断面に
於ける不織布構成繊維切断面形態が、厚み方向直径対長
手方向直径比率８０〜１２０％を示すものを６０％以上
包含するように幅方向に配列せしめた層とを積層させた
直交配列組織長繊維不織布であること。(3) Requirements of the present invention 3. (Structure of Reinforcing Nonwoven Fabric) (1) The number of fibers of cut surface showing the tissue morphology of the nonwoven fabric, in which the cut surface morphology of the nonwoven fabric constituting the widthwise cut surface of the nonwoven fabric shows a thickness direction diameter to width direction diameter ratio of 60 to 120%. Was made into a long-fiber non-woven fabric in which orthogonal arrangement was carried out so that 50% or more of the total number of cut surfaces was included. (2) Alternatively, the shape of the cut surface of the nonwoven fabric constituting the cut surface in the width direction of the non-woven fabric is such that the ratio of the diameter in the thickness direction to the diameter in the width direction is 80.
Of 120% to 60% or more of the layers arranged in the longitudinal direction so that the shape of the cut surface of the non-woven fabric constituting the non-woven fabric in the cross section of the non-woven fabric is 80 in the thickness direction to 80 in the longitudinal direction. A cross-woven tissue long-fiber non-woven fabric is obtained by laminating a layer which is arranged in the width direction so as to include 60% or more of a material exhibiting 120% to 120%.
【００１３】要件３．(１)において、ポリエステルを主
成分と摺る長繊維不織布では、スパンボンド法が最も一
般的であり、寸法安定性に優れる不織布製造のために
は、フィラメントを実質的に伸ばした状態で、不織布の
長さ方向、幅方向に配列し、これら長さ方向及び幅方向
のフィラメントをそれぞれ長さ方向及び幅方向に折り返
すことにより、重畳積層して直交配列とすることが必須
である。Requirement 3. In (1), the spunbond method is the most general method for long-fiber non-woven fabric in which polyester is used as the main component, and in order to produce a non-woven fabric having excellent dimensional stability, the filament is substantially stretched and It is essential that the filaments are arranged in the length direction and the width direction, and the filaments in the length direction and the width direction are folded back in the length direction and the width direction, respectively, so that they are stacked and laminated to form an orthogonal arrangement.
【００１４】要件３．(２)においては、最も効率よく高
い初期引っ張り弾性率を持ち、高い抗張積を持つ不織布
を形成させるための必須要件である不織布の組織構成の
規定と、この要件にかなう直交配列組織不織布におい
て、更にその効果を充分に発揮する不織布構成繊維の直
交配列度を規定する要件であり、この要件を不織布が満
たし且つ、要件２に規定する自己接着型の長繊維で不織
布が構成構成され自己接着させることにより、特公昭６
２−４９３９８号公報に開示される方法の未解決の課題
を解消し、目的とする極めて補強効率の高い寸法安定性
の高く加工性に優れた補強布の開発に成功したのであ
る。Requirement 3. In (2), the provision of the tissue structure of the non-woven fabric which is an essential requirement for forming a non-woven fabric having the highest initial tensile elastic modulus and the high tensile product in the most efficient manner and the orthogonal array non-woven fabric which meets this requirement Furthermore, the non-woven fabric is a requirement that defines the degree of orthogonal arrangement of the fibers constituting the non-woven fabric that sufficiently exerts its effect, and the non-woven fabric is composed of self-adhesive long fibers that satisfy this requirement and self-adhesive. By doing,
By solving the unsolved problems of the method disclosed in Japanese Patent Publication No. 2-49398, the inventors succeeded in developing an intended reinforcing cloth having extremely high reinforcing efficiency, high dimensional stability, and excellent workability.
【００１５】(４)本発明の要件４．縦横の５％伸張時応
力の和が、不織布目付け１ｇ／ｍ2 の当たり換算値が
０．３５Ｋｇｆ／５ｃｍ以上保持している不織布である
こと。要件４は、要件１、２及び３により達成でき選択
出来る高機能不織布が、目的とする寸法安定性が高く強
靭な耐久性に優れた防水層を形成するための必要条件の
選択規定である。(4) Requirements of the present invention The sum of 5% elongation when the stress aspect is a nonwoven converted value per nonwoven basis weight 1 g / m 2 holds 0.35Kgf / 5cm or more. Requirement 4 is a selection rule of necessary conditions for forming a desired waterproof layer having high dimensional stability and toughness, which is a highly functional nonwoven fabric that can be achieved and selected by the requirements 1, 2 and 3.
【００１６】即ち、要件４の下限を外れる場合は、ウレ
タン等の塗膜防水では６０ｇ／ｍ2以上の目付が補強材
として必要となり、施工時の通過速度の観点から本発明
の目的とする効果が得られなくなる。一方、アスファル
トルーフィング用としても、１２０ｇ／ｍ2以上の目付
が補強材として必要となり、本発明の目的とする効果が
得られなくなる。That is, if the lower limit of Requirement 4 is not satisfied, a unit weight of 60 g / m 2 or more is required as a reinforcing material for waterproofing the coating film of urethane or the like, and the effect of the present invention from the viewpoint of passing speed during construction. Will not be obtained. On the other hand, even for asphalt roofing, a basis weight of 120 g / m 2 or more is required as a reinforcing material, and the effect of the present invention cannot be obtained.
【００１７】[0017]
【作用】以上、本発明の目的とする強靭で寸法安定性に
優れた防水層を形成し、加工操業性優秀な防水層補強用
不織布を得るための必須要件を開示したが、次いで以下
特許請求の範囲に記載の要件を満たす自己接着タイプの
直交配列組織不織布を製造するための具体例を開示す
る。As described above, the essential requirements for forming a tough waterproof layer excellent in dimensional stability, which is the object of the present invention, to obtain a waterproof layer-reinforced nonwoven fabric having excellent processing operability have been disclosed. Disclosed is a specific example for producing a self-adhesive type orthogonally arranged non-woven fabric satisfying the requirements described in the above range.
【００１８】従来、スパンボンド法で製造されるポリエ
ステル系長繊維不織布は、その製造の難しさから１ｄ〜
５ｄのものが中心であった。一方ポリエステル系長繊維
不織布の用途として、アスファルト、ウレタン等を含浸
させて、屋根等の防水に用いる補強材においては、これ
らの含浸される溶液はいずれも高粘度であり、その含浸
速度は不織布が持っている繊維間隙の孔サイズが大きな
影響を与える。得られる補強用不織布にアスファルトル
ーフィング製造工程におけるアスファルトの含浸性や、
塗膜防水層施工に於ける塗膜防水剤の含浸性を、圧密下
における充分な熱接着を実施して、尚且つ優秀な含浸性
能を満足させ維持させるには、不織布構成繊維のデニー
ル選択による嵩密度規定法が最も効果的且つ安易な方法
であり、必要な含浸性維持には構成繊維デニールを６デ
ニール以上となすべきこと、一方補強布の接着点密度に
基づく物性維持の面より構成繊維デニールは２０デニー
ル以下となすが好適であることを確認し、適度の含浸性
保持を不織布構成繊維デニールを６デニール以上となす
如き製糸条件を選定することにより達成させた。Conventional polyester long-fiber non-woven fabrics manufactured by the spunbond method are difficult to manufacture because of their d
The one with 5d was the center. On the other hand, as a use of polyester-based long-fiber nonwoven fabric, in a reinforcing material which is impregnated with asphalt, urethane or the like and is used for waterproofing a roof or the like, all of these impregnated solutions have high viscosity, and the impregnation speed is The size of the pores in the fiber gap has a great influence. Impregnating the asphalt in the asphalt roofing manufacturing process to the resulting reinforcing nonwoven fabric,
For the impregnation property of the waterproof film in the waterproof film construction, in order to perform sufficient thermal bonding under compaction and to satisfy and maintain the excellent impregnation performance, it is necessary to select the denier of the non-woven fabric constituent fiber. The bulk density regulation method is the most effective and easy method, and the denier of constituent fibers should be 6 denier or more to maintain the necessary impregnation property. It was confirmed that the denier is preferably 20 denier or less, and proper retention of the impregnation property was achieved by selecting the yarn-making conditions such that the denier of the fiber constituting the non-woven fabric was 6 denier or more.
【００１９】本発明における自己接着型繊維による不織
布構成法の一つである芯鞘型複合繊維による不織布形成
法は、既に公知の複合繊維紡糸法をスパンボンド製造プ
ロセスに適用して製造すればよく、何ら特別の設備並び
にプロセスは必要としない。The non-woven fabric forming method using the core-sheath type composite fiber, which is one of the non-woven fabric forming methods using the self-adhesive fibers in the present invention, may be produced by applying the already known composite fiber spinning method to the spunbond production process. , No special equipment or process is required.
【００２０】即ち、芯形成成分ポリマーと鞘成分形成ポ
リマーを、それぞれ別個の押出し機より押し出し、ギヤ
ーポンプを介し所定の芯鞘比率で（芯／鞘比率＝９０／
１０〜６０／４０）複合紡糸用ノズルに供給し押し出し
複合繊維を紡出し、紡糸ビーム下部に設置した数本のフ
ィードローラーとドローローラーの組み合わせよりなる
延伸装置にベルトかけ状にかけ所定速度で牽引し、所定
倍率に延伸し、移送、牽引用ジェットに引き取らせ不織
布を形成せしめる。That is, the core-forming component polymer and the sheath component-forming polymer are extruded from separate extruders, respectively, and at a predetermined core-sheath ratio (core / sheath ratio = 90 /
10 to 60/40) The composite fiber is supplied to a composite spinning nozzle and extruded, and the composite fiber is spun out. The composite fiber is drawn on a stretching device composed of a combination of several feed rollers and a draw roller installed at the lower part of the spinning beam and pulled at a predetermined speed. Then, the nonwoven fabric is stretched to a predetermined ratio and taken up by a transfer / traction jet to form a non-woven fabric.
【００２１】又、自己接着型の非職性ウエッブを形成さ
せるもう一つの手段の、自己接着性繊維混繊ウエッブの
製造も何ら特別の装置並びにプロセスを用いなくとも良
く、従来公知の混繊紡糸法をスパンボンドプロセスに適
用して製造すればよく、例えば不織布形成主体繊維用ポ
リマーと接着成分繊維形成用ポリマーを、それぞれ別個
の押出し機より押し出し、ギヤーポンプを介し所定の混
繊比率（主体繊維／接着成分繊維＝９０／１０〜６０／
４０）となるように計量し、公知のノズル内混繊ノズル
に供給し押し出すか、近接し隣接して設置した主体繊維
用ノズルと接着成分繊維用ノズルとから押し出す等の混
繊法に対し適用される公知の方法を適用し、複合繊維の
場合と同様に紡糸ビーム下部に設置した数本のフィード
ローラーとドローローラーの組み合わせよりなる延伸装
置にベルトかけ状にかけ所定速度で牽引し、所定倍率に
延伸し、移送、牽引用ジェットに引き取らせ不織布を形
成させる。The production of a self-adhesive fiber-blended web, which is another means for forming a self-adhesive non-professional web, does not require any special apparatus and process, and is a conventionally known blended fiber spun. The method may be applied to a spunbond process, for example, a polymer for forming a non-woven fabric main fiber and a polymer for forming an adhesive component fiber are extruded from separate extruders, and a predetermined mixed fiber ratio (main fiber / main fiber / Adhesive component fiber = 90 / 10-60 /
40) It is applied to a mixed fiber method such as measuring and supplying it to a known in-nozzle mixed fiber nozzle and extruding it, or extruding from a main fiber nozzle and an adhesive component fiber nozzle that are installed in close proximity and adjacent to each other. Applying the known method described above, as in the case of the composite fiber, it is pulled in a belt-like manner at a predetermined speed by a stretching device composed of a combination of several feed rollers and a draw roller installed at the bottom of the spinning beam, and at a predetermined magnification. It is stretched and taken up by a jet for transporting and drawing to form a non-woven fabric.
【００２２】本発明における自己接着繊維としての芯鞘
型複合繊維の鞘成分ポリマー、即ち接着成分ポリマー
と、混繊用の接着成分繊維用ポリマーは、１８０〜２３
０℃の熱アスファルトに含浸時に軟化、溶融、流動しな
い性能を備えることが必要であると共に、芯鞘型複合繊
維においては、芯成分ポリマーであるポリエチレンテレ
フタレート及びポリエチレンテレフタレートを主体とす
る共重合体との接着性がよいことが必須の要件であり、
又混繊用の接着成分繊維用ポリマーにおいても不織布形
成主体繊維ポリマーであるポリエチレンテレフタレート
及びポリエチレンテレフタレートを主体とする共重合体
との接着性がよいことが必須の要件であり、熱アスファ
ルト含浸に耐える熱特性（熱時引っ張り弾性率・流動特
性）と融点を有する共重合エステルや、熱アスファルト
の温度以上の融点を持つポリブチレンテレフタレート等
の結晶性ポリエステル等や、これ等結晶性ポリエステル
とコーポリエステルのブレンド物から、熱アスファルト
含浸加工温度条件等を考慮して選定して使用される。The sheath component polymer of the core-sheath type composite fiber as the self-adhesive fiber in the present invention, that is, the adhesive component polymer and the polymer for the adhesive component fiber for mixing fibers are 180 to 23.
In the core-sheath type composite fiber, polyethylene terephthalate as a core component polymer and a copolymer mainly composed of polyethylene terephthalate are required to be softened, melted and do not flow when impregnated in 0 ° C. hot asphalt. It is an essential requirement that the adhesiveness of
Also, in the case of the adhesive component fiber polymer for the mixed fiber, it is an essential requirement that the adhesive property with polyethylene terephthalate, which is the main fiber polymer of the non-woven fabric, and the copolymer mainly composed of polyethylene terephthalate, is good, and it can withstand hot asphalt impregnation. Copolymeric esters having thermal characteristics (tensile elastic modulus and flow characteristics when heated) and melting point, crystalline polyesters such as polybutylene terephthalate having a melting point above the temperature of hot asphalt, and the like. It is selected and used from the blended product in consideration of hot asphalt impregnation processing temperature conditions and the like.
【００２３】接着成分ポリマーの選定に際して、熱アス
ファルト含浸条件を考慮し可能な限り低融点のランダム
コーポリエステルを用いると、熱融着条件がより緩やか
となり接着加工が容易となるが、反面このようなランダ
ムコーポリマーは、融点以下の軟化流動開始点を有する
ので、熱セットが行い難く不十分となる難点が出てく
る。これに反しポリブチレンテレフタレート等の結晶性
ポリエステルを用いると、ランダムコーポリマーの場合
のように融点以下で軟化流動する事がなく、熱特性に優
れた製品を得ることが出来るが、熱接着条件が厳しくな
り接着加工が難しくなる。In selecting an adhesive component polymer, if a random copolyester having a melting point as low as possible is used in consideration of hot asphalt impregnation conditions, the heat fusion conditions become more lenient and the bonding process becomes easier, but on the other hand Since the random copolymer has a softening flow starting point equal to or lower than the melting point, heat setting is difficult and insufficient. Contrary to this, when a crystalline polyester such as polybutylene terephthalate is used, it is possible to obtain a product excellent in thermal characteristics without softening and flowing below the melting point as in the case of a random copolymer, but the thermal bonding condition is It becomes difficult and the bonding process becomes difficult.
【００２４】この改善策としてポリブチレンテレフタレ
ート等の結晶性ポリマーにコーポリエステルを小量ブレ
ンドする方法は、軟化流動開始点をランダムコーポリマ
ーの場合程下げずに融着温度を低下でき極めて効果的で
ある。As a remedy for this, a method of blending a small amount of copolyester with a crystalline polymer such as polybutylene terephthalate is extremely effective because it can lower the fusion temperature without lowering the softening flow starting point as much as in the case of a random copolymer. is there.
【００２５】又、本発明の高抗張積、高初期引っ張り弾
性率の不織布を形成させるために必須の、長繊維にて構
成される直交配列組織繊維不織布の製造方法としては、
フィラメントよりなるトウ開繊法等の公知の長繊維不織
布製造法の適用も可能であるが、生産効率面から、例え
ば特公昭６２−４９３９８号公報に開示された直交配列
組織スパンボンド不織布製造法の適用などが好適であ
る。Further, as a method for producing a non-woven fabric having an orthogonal array structure composed of long fibers, which is indispensable for forming the non-woven fabric having a high tensile product and a high initial tensile elastic modulus of the present invention,
A known long-fiber non-woven fabric manufacturing method such as a tow opening method comprising filaments can be applied, but from the viewpoint of production efficiency, for example, the orthogonal array structure spun-bonded non-woven fabric manufacturing method disclosed in Japanese Patent Publication No. 62-49398. Application and the like are preferable.
【００２６】即ち、数列の紡糸ビームのノズルより押し
出される糸条体列を、各紡糸ビーム下部に設置した数本
のフィードローラーとドローローラーの組み合わせより
なる延伸装置にベルトかけ状にかけ所定速度で牽引し、
所定倍率に延伸し、必要に応じて静電開繊を施し、それ
ぞれの延伸装置に対し設置したスリット状移送、牽引用
エアージェット装置により吸引させ引き取らせ、第一の
紡糸ビームより紡出され高速エアーと共に噴射される糸
条帯列を、その下部に設置し、更に下部に設置されてい
るウエブ捕集、移送用コンベアー装置の進行方向と平行
の方向、即ちウエブ進行方向の前後方向に揺動させてい
る傾斜角可変の偏向揺動板に向かって噴射させ揺動、振
幅、重畳沈積捕集し、更に、第二の紡糸ビームより紡出
され同様に高速エアーと共に噴射される糸条帯列を、コ
ンベアー装置の進行方向と直角をなす方向、即ちウエブ
進行方向に向かい左右にに揺動する傾斜角可変の偏向揺
動板に向かって噴射させ揺動、振幅、重畳沈積捕集させ
て積層し、直交配列組織の不織布を製造する。That is, the filament rows extruded from the nozzles of several spinning beams are belt-shaped and drawn at a predetermined speed by a stretching device comprising a combination of several feed rollers and draw rollers installed at the bottom of each spinning beam. Then
Stretched to a predetermined ratio, electrostatically opened as needed, slit-shaped transfer installed for each stretching device, sucked by a pulling air jet device to be taken up, spun from the first spinning beam at high speed A row of yarns to be jetted together with air is installed in the lower part, and is swung in the direction parallel to the traveling direction of the web collecting and transferring conveyor device installed in the lower part, that is, in the front-back direction of the web traveling direction. Injecting toward a deflecting oscillating plate with a variable tilt angle, oscillating, swinging, collecting the accumulated deposits, and further spun from the second spinning beam and similarly jetted together with high-speed air. To a direction perpendicular to the traveling direction of the conveyor device, that is, to a deflecting oscillating plate with a variable tilt angle that oscillates to the left and right in the web advancing direction. And orthogonal distribution To produce the organization of the non-woven fabric.
【００２７】尚、上記の紡出フィラメント糸条帯の直行
折り返し構造状の重畳沈積捕集法は、例示した特公昭６
２−４９３９８号公報に開示された機械的偏向板揺動法
によらなくとも、特公昭４５ー１９４２７号公報に記載
されるような牽引用エアージェット装置出口側部に、紡
出糸条帯を伴い噴出する気流の進行飛翔方向を偏向し揺
動させるための、交互に気流を噴出させる偏向揺動用ジ
ェットプレナムを付したエアージェット装置の適用等、
公知の何れのプロセスの適用も可能である。Incidentally, the above-mentioned method of stacking and depositing the spun filament yarn strip in the form of the orthogonal folded structure is described in Japanese Patent Publication No.
Even without using the mechanical deflection plate swinging method disclosed in Japanese Patent Publication No. 2-49398, a spun yarn band is provided on the outlet side of the traction air jet device as described in Japanese Patent Publication No. 45-19427. Application of an air jet device with a deflecting and swinging jet plenum that alternately ejects the airflow to deflect and oscillate the advancing flight direction of the accompanying airflow,
Application of any known process is possible.
【００２８】本発明に規定する性能を有する直交配列組
織不織布の繊維配列状態を満足する紡出フィラメント糸
条帯折り返し重畳積層状態を得るために必要な揺動条件
としては、折り返し周期（Ｌ）を５０ｃｍ以上とするこ
と、又各方向配列成分の直行性保持（付与）の為に必要
な基本条件としては、紡出糸条帯の紡出速度（Ｖｆ）と
し揺動周期をＮとした際、Ｎ≒Ｖｆ／２Ｌとすることに
より希望する直行性を保持した重畳積層構造体を得るこ
とが出来る。（もし、Ｎ＝Ｖｆ／２Ｌならば完全な直行
性の重畳沈積積層構造体が得られ、又、Ｎ＞Ｖｆ／２Ｌ
の場合は沈積糸条はランダムループ状に積層する。）The turning period (L) is a swinging condition required to obtain the spun filament filament strip folded and laminated state satisfying the fiber arrangement state of the orthogonal arrangement structure nonwoven fabric having the performance specified in the present invention. The basic conditions required to be 50 cm or more and to maintain (provide) the orthogonality of the components arranged in each direction are, when the spinning speed (Vf) of the spun yarn band and the rocking cycle are N, By setting N≈Vf / 2L, it is possible to obtain a superposed laminated structure that maintains desired orthogonality. (If N = Vf / 2L, a perfect orthogonal stacked deposition structure is obtained, and N> Vf / 2L
In the case of 1, the deposited yarns are laminated in a random loop shape. )
【００２９】本発明における不織布の接着は、何ら特別
の装置及びプロセスによらなくとも公知の所謂サーマル
ボンド法の適用により実施する事が出来る。即ち、不織
布の組織的、形態的ズレを防ぐために不織布の両面から
金網で挟み込み、パーホレーションドラムに圧着し形状
固定しながら熱風を貫通、循環せしめる、所謂サーマル
ボンダーを用いた接着加工により熱セットと熱溶着を実
施することが最も好ましく、このようにして寸法安定性
の高い強靭な高引っ張り弾性率の不織布を得ることが出
来る。Adhesion of the nonwoven fabric in the present invention can be carried out by applying a known so-called thermal bond method without using any special device and process. That is, in order to prevent structural and morphological shifts of the nonwoven fabric, it is sandwiched with wire mesh from both sides of the nonwoven fabric, heat-set by a bonding process using a so-called thermal bonder that allows hot air to circulate and circulate while press-fitting to the perforation drum and fixing the shape. It is most preferable to carry out the heat-welding, and thus a tough non-woven fabric having high dimensional stability and high tensile elasticity can be obtained.
【００３０】以下、本発明の実施態様と効果を具体的実
施例を挙げて説明する。The embodiments and effects of the present invention will be described below with reference to specific examples.
【実施例】芯成分ポリマーとして極限粘度０．６３のポ
リエチレンテレフタレートを、鞘成分構成ポリマーとし
て極限粘度１．１３のポリブチレンテレフタレートを、
それぞれの押出し機に供給し、３１５個のオリフィス
（直径：０．３ｍｍφ，長さ：０．６ｍｍ）を有する芯
鞘型複合繊維紡糸用ノズルから、芯鞘構成比率（重量）
８／２、吐出量１．１１ｇｒ．／孔．分、紡糸温度２８
０℃で押し出し、４本のフィードロール（後３本は８５
℃に加熱）と４本のドローロール（表面速度１，０００
ｍ／分）にベルト状にかけ、５倍に延伸し６デニールの
ポリエステル複合フィラメントを得た。このフィラメン
トをスリット状エアージェットにて吸引し引き取り、該
エアージェット下部に設置され、更にその下部に設置さ
れる捕集コンベアーの進行方向と平行方向に揺動周期７
００サイクル／分で揺動させている揺動板に向け噴射さ
せ、重畳積層沈積折り返し長さ７０ｃｍで沈積捕集し、
更にその上に、同じ仕様の第２の紡糸延伸装置より紡出
される同じく５倍延伸された６デニールのポリエステル
複合フィラメントを、捕集コンベアーの進行方向と垂直
方向に揺動周期７００サイクル／分で揺動させている揺
動板に向け噴射させ、重畳積層沈積折り返し長さ７０ｃ
ｍで沈積捕集し、積層し直交配列組織の不織布を得た。
次いでこの不織布を２枚のネットコンベアー間に挟み２
４０℃、４．３ｍ／秒の風速の熱風を貫通・循環させ形
状固定下で熱融着を行い実施例１の直交配列組織不織布
を得た。EXAMPLES Polyethylene terephthalate having an intrinsic viscosity of 0.63 was used as the core component polymer, and polybutylene terephthalate having an intrinsic viscosity of 1.13 was used as the sheath component constituting polymer.
The core-sheath composite fiber spinning nozzle, which is supplied to each extruder and has 315 orifices (diameter: 0.3 mmφ, length: 0.6 mm), has a core-sheath composition ratio (weight).
8/2, discharge amount 1.11 gr. / Hole. Min, spinning temperature 28
Extruded at 0 ° C, 4 feed rolls (85 rolls for 3 rolls later)
Heated to ℃) and 4 draw rolls (surface speed 1,000)
m / min) and stretched 5 times to obtain a 6-denier polyester composite filament. This filament is sucked and drawn by a slit-shaped air jet, and is installed in the lower part of the air jet, and further, a swing cycle 7 is set in a direction parallel to the traveling direction of a collection conveyor installed in the lower part.
It is jetted toward a rocking plate that is rocking at a rate of 00 cycles / minute, and is deposited and collected at a stacking laminated deposition folding length of 70 cm,
Furthermore, a 5 times stretched 6-denier polyester composite filament spun from a second spinning / stretching device of the same specifications was shaken at a cycle of 700 cycles / minute in the direction perpendicular to the traveling direction of the collecting conveyor. Injection is performed toward the rocking plate that is rocking, and the stacking layer stacking folding length 70c
m was collected by sedimentation and laminated to obtain a non-woven fabric having an orthogonal array structure.
Next, sandwich this non-woven fabric between two net conveyors and
The orthogonally arranged nonwoven fabric of Example 1 was obtained by passing through and circulating hot air having a wind speed of 4.3 m / sec at 40 ° C. and performing heat fusion under a fixed shape.
【００３１】同様に、接着成分ポリマーとして極限粘度
１．１３のポリブチレンテレフタレートとポリエチレン
イソ／テレフタレート共重合ポリエステル（共重合比２
０／８０モル％）の８５／１５のブレンドポリマーを用
い、重畳積層沈積の折り返し長を６５ｃｍとして製造し
た直交配列組織不織布の例が実施例２である。Similarly, as the adhesive component polymer, polybutylene terephthalate having an intrinsic viscosity of 1.13 and polyethylene iso / terephthalate copolymerized polyester (copolymerization ratio 2
Example 2 is an example of a non-woven fabric with an orthogonal array structure manufactured by using a blended polymer of 85/15 (0/80 mol%) and a folding back length of superposed laminated deposition of 65 cm.
【００３２】又、同じく接着成分ポリマーとして極限粘
度０．６３のポリエチレンイソ／テレフタレート共重合
ポリエステル（共重合比１５／８５モル％）を用い、重
畳積層沈積の折り返し長を６７ｃｍとして製造した直交
配列組織不織布が実施例３である。Also, an orthogonal array structure produced by using polyethylene iso / terephthalate copolymerized polyester (copolymerization ratio 15/85 mol%) having an intrinsic viscosity of 0.63 as the adhesive component polymer and setting the folding back length of the superposed laminated deposition to 67 cm A nonwoven fabric is Example 3.
【００３３】実施例２における複合繊維紡糸ノズルの代
わりに、２５２孔はポリエチレンテレフタレートに、６
３孔はポリエチレンイソ／テレフタレート共重合ポリエ
ステル（共重合比１５／８５モル％）の吐出用に均等に
配分分布させ設計されたノズル混繊用ノズル（混繊率８
／２）を用いて混繊紡糸し、実施例１と同様にして不織
布を作製し、熱融着して直交配列組織の不織布を得た例
が実施例４である。Instead of the composite fiber spinning nozzle in Example 2, 252 holes were made of polyethylene terephthalate,
Nozzle for mixing fibers (a mixing ratio of 8) is designed so that the three holes are evenly distributed and distributed for discharging polyethylene iso / terephthalate copolymerized polyester (copolymerization ratio 15/85 mol%).
Example 4 is an example in which a non-woven fabric was produced in the same manner as in Example 1 by carrying out mixed fiber spinning using // 2), and was heat-sealed to obtain a non-woven fabric having an orthogonal array structure.
【００３４】比較例１は、実施例１と他は全く同一の条
件を用い、不織布構成繊維の配列状態のみを直交配列組
織とせず、ランダムループ組織とした場合の例である。Comparative Example 1 is an example in which exactly the same conditions as in Example 1 are used, and only the arrangement state of the non-woven fabric constituent fibers is not an orthogonal arrangement structure but a random loop structure.
【００３５】同じく、比較例２は、実施例３と他は全く
同一の条件を用い、構成繊維配列状態のみを直交配列組
織とせず、ランダムループ組織とした場合の例である。Similarly, Comparative Example 2 is an example in which exactly the same conditions as in Example 3 are used and only the constituent fiber arrangement state is not the orthogonal arrangement structure but the random loop structure.
【００３６】このようにして作製した実施例の防水層補
強用不織布の性能及びこの不織布を補強材とした防水膜
（アスファルトルーフィング）の物性を表１にまとめて
示した。尚、全試料ともＪＩＳ Ａ６０２２（ストレッ
チルーフィング）を念頭においた性能評価試料となるた
め不織布目付けを１２０ｇ／ｍ2 とした。The performance of the non-woven fabric for reinforcing the waterproof layer of the example thus produced and the physical properties of the waterproof membrane (asphalt roofing) using this non-woven fabric as a reinforcing material are summarized in Table 1. Since all the samples were performance evaluation samples with JIS A6022 (stretch roofing) in mind, the basis weight of the non-woven fabric was 120 g / m 2 .
【００３７】表示したデータより明らかなように、本発
明に基づく実施例１〜４の直交配列組織の不織布の防水
層補強に必須の要求性能は何れも優秀であり、得られる
防水膜（アスファルトルーフィング）物性も耐久性の高
い防水層を形成するに必要な物性を有し、優れた補強性
能と補強効率を有するすることがわかる。As is clear from the displayed data, all the required performances required for reinforcing the waterproof layer of the non-woven fabrics of the orthogonal arrangement structure of Examples 1 to 4 according to the present invention are excellent, and the obtained waterproof film (asphalt roofing) is obtained. ) It can be seen that it has the physical properties required to form a waterproof layer having high durability, and has excellent reinforcing performance and reinforcing efficiency.
【００３８】又、アスファルトルーフィング製造工程に
おける幅入りもなく防水膜に残留歪みを入れることな
く、優れた加工性能と寸法安定性を有することも示して
いる。実施例１〜４における物性値、補強性能の若干の
差異は、配列度の若干の差と、接着剤の差に基づく若干
の接着状態の差によるものであるが、何れも充分な性能
を有し、実施例４の混繊接着法によるものも、複合繊維
によるものと大差ない性能を示すことがわかる。It is also shown that it has excellent processing performance and dimensional stability without being narrowed in the asphalt roofing manufacturing process and without residual strain in the waterproof membrane. The slight difference in the physical property values and the reinforcing performance in Examples 1 to 4 is due to the slight difference in the arrangement degree and the slight difference in the bonding state due to the difference in the adhesive, but all have sufficient performance. However, it can be seen that the one using the mixed fiber bonding method of Example 4 also exhibits a performance that is not so different from that using the composite fiber.
【００３９】これに反して、不織布構成組織を直交配列
組織とせずランダムループ組織とした比較例１、２の不
織布は、構成組織以外が全て実施例２、３に対応し同一
であるにも拘らず著しく低い物性値を示し、又この不織
布を用いて製作したアスファルトルーフィングの物性
も、実施例１〜３を用いた防水膜に比し著しく低い値で
あり、この目付けにおいては耐久性のある防水層を形成
することが出来ない補強効率の低さを示した。On the contrary, the non-woven fabrics of Comparative Examples 1 and 2 in which the non-woven fabric constituent structure is not the orthogonal array structure but the random loop structure are the same except that the constituent structures are the same as those of Examples 2 and 3. The properties of the asphalt roofing produced by using this non-woven fabric are significantly lower than those of the waterproof membranes of Examples 1 to 3, and the waterproofness is durable in this basis weight. It showed a low reinforcement efficiency in which layers could not be formed.
【００４０】防水材料の含浸透過性能を評価するため
に、実施例３に基く方法で捕集用コンベアー速度のみを
２倍にあげ、目付け６０ｇ／ｍ2 の試料（実施例５）を
作製した。In order to evaluate the impregnation and permeation performance of the waterproof material, a sample having a basis weight of 60 g / m 2 (Example 5) was prepared by doubling only the collecting conveyor speed by the method based on Example 3.
【００４１】又、比較例２に基づく方法で不織布構成繊
維デニールを４デニールとなるように紡糸条件を変更
し、捕集用コンベアー速度も変更して６０ｇ／ｍ2 のラ
ンダムループ組織の不織布（比較例３）を作製した。こ
の試料の塗膜防水剤含浸透過性を評価し表２に示す結果
を得た。Further, the spinning conditions were changed so that the denier of the fibers constituting the non-woven fabric was 4 denier and the speed of the collecting conveyor was also changed by the method according to Comparative Example 2 to obtain a non-woven fabric having a random loop structure of 60 g / m 2 (comparative). Example 3) was prepared. This sample was evaluated for the impregnation permeability of the coating film waterproofing agent, and the results shown in Table 2 were obtained.
【００４２】尚、本発明における性状、物性評価は下記
のようにして行なった。 補強用不織布の抗張積及び５％伸張時応力評価 サンプルサイズ５ｃｍ（幅）×２０ｃｍ（長さ）の試験
用試料を試料の縦、横方向から打ち抜き、チャック幅５
ｃｍ、掴み間隔１０ｃｍで把持し、定速伸張型引っ張り
試験機を用いて伸張し、破断時応力と破断時伸度を測定
し抗張積を算出し、得られる応力−歪み曲線から５％伸
張に要する応力を算定した。 防水膜の抗張積及び３％伸張時応力評価 ＪＩＳ Ａ６０２２（ストレッチルーフィング）工業規
格試験法に基づき測定した。 アスファルトルーフィング含浸加工時幅入り量評価 アスファルトルーフィング実生産機において補強用不織
布を、２００℃のアスファルト浴中を加工速度１００ｍ
／ｍｉｎ．の走行速度で走行させ加工し、巻き取り機直
前における製品幅を測定し幅入り量を評価した。 不織布構成繊維配列度指標評価 不織布を幅方向及び長さ方向に切断し、その切断面の顕
微鏡写真をとり、シート構成繊維個々の断面のシートの
厚み方向の直径（Ｙ）と厚み方向と垂直をなす方向の直
径（Ｘ）を測定し、その直径比（Ｘ／Ｙ）を算出し、
（Ｘ／Ｙ）が８０〜１２０％の切断面を示した繊維の本
数を測定総本数で割り、幅方向切断面、長手方向切断面
に対する結果を百分率表示する。本発明の条件にかなう
この指標は縦、横方向とも６０％以上である。 含浸透過性の評価 含浸透過性能を評価するモデルとして、下端に評価用不
織布を取り付けた上方開放のガラス管の上方から６８ｐ
ｏｉｓｅの２液反応型ウレタン塗膜防水剤を所定の処方
通りに混合して流し込み、単位時間、単位面積当たりの
流出量を計り含浸透過性を評価する方法を採用した。加
工工程において良好な加工操業性を示すための本評価法
の含浸透過性評価値は、０．１０ｇ／ｃｍ2 ・分以上で
ある。The properties and physical properties of the present invention were evaluated as follows. Tensile product of reinforcing non-woven fabric and stress evaluation at 5% elongation A test sample with a sample size of 5 cm (width) x 20 cm (length) was punched from the longitudinal and lateral directions of the sample, and the chuck width was 5
cm, gripping interval 10 cm, stretched using a constant-speed stretch type tensile tester, stress at break and elongation at break are measured to calculate tensile product, and 5% elongation is obtained from the obtained stress-strain curve. The stress required for was calculated. Tensile Product of Waterproof Membrane and Stress Evaluation at 3% Elongation Measured based on JIS A6022 (Stretch Roofing) Industrial Standard Test Method. Evaluation of width width during asphalt roofing impregnation processing Asphalt roofing Non-woven fabric for reinforcement in a real production machine, processing speed 100m in asphalt bath at 200 ℃
/ Min. The width of the product was measured by measuring the width of the product immediately before the winder, and the amount of width width was evaluated. Evaluation of the index of fiber arrangement in the non-woven fabric The non-woven fabric is cut in the width direction and the length direction, microscopic photographs of the cut surface are taken, and the diameter (Y) in the thickness direction of the sheet of each cross section of the fiber constituting the sheet and the direction perpendicular to the thickness direction are taken. Measure the diameter (X) in the forming direction, calculate the diameter ratio (X / Y),
The number of fibers showing a cut surface of (X / Y) of 80 to 120% is divided by the total number of measurement fibers, and the results for the cut surface in the width direction and the cut surface in the longitudinal direction are expressed as a percentage. This index satisfying the conditions of the present invention is 60% or more in the vertical and horizontal directions. Evaluation of Impregnation Permeability As a model for evaluating impregnation permeability, 68p from above of an open glass tube with a nonwoven fabric for evaluation attached to the lower end.
A method of evaluating impregnation permeability by measuring the outflow amount per unit time and unit area by mixing and pouring Oise's two-component reaction type urethane coating film waterproofing agent according to a prescribed prescription. The impregnation permeability evaluation value of this evaluation method for exhibiting good processing operability in the processing step is 0.10 g / cm 2 · min or more.
【００４３】[0043]
【発明の効果】本発明は以上説明したように構成される
ので、次のような効果を有する。 本発明の防水層補強用不織布は、構成繊維が耐熱性の
高いポリエステル長繊維よりなり直交配列され、その交
点が強固に熱融着されているため、縦、横、バイアス方
向ともに優れた熱時及び常温時の引っ張り弾性率を有
し、更に又引っ張り強力、破断伸度、抗張積等防水層補
強に必須の機能が優秀であり、高い補強効果により下地
ムーブメントによる防水層破断抵抗が優秀で耐久性に優
れた防水層が形成でき、又アスファルトルーフィング製
造工程等の熱時含浸加工工程においても伸張幅入りする
ことなく高速で生産性良く製造でき、加工時に残留歪み
が入り難いため、極めて寸法安定性の高い防水層を形成
出来る。 防水層補強体のような、防水材内に包含したマトリッ
クス構造を有する複合材料（補強複合体）においては、
補強用不織布の補強効果は、補強用不織布の目付けには
依存せず不織布構成繊維の繊維量に依存するという事実
を勘案し、本発明の直交配列組織補強用不織布は、不織
布構成繊維の交点間を単に接着するのみの接着剤で接着
せず、交点間接着と共に不織布構成繊維として、その物
性を担うｌｏａｄ ｂｅａｒｉｎｇ ｃｏｍｐｏｎｅｎ
ｔとして機能する複合繊維により不織布を構成させる
か、又は、このような機能を有する熱接着用繊維を混繊
させて不織布を形成させているため、不織布構成組織の
効果とあいまって極めて高い防水層補強効率＝［補強能
力／目付け］を持つ補強布を得ることが出来る。 アスファルチルーフィング製造時におけるゴムアスフ
ァルト等高粘度のアスファルトの高速含浸加工対応性付
与のため、及び、高粘度塗膜防水材含浸透過性能向上の
ために、不織布構成繊維を６デニール以上となしたこと
により、充分な熱圧着実施下においても高度の防水剤含
浸透過性が維持でき極めて高い加工操業性のある補強布
を得ることが出来る。Since the present invention is constructed as described above, it has the following effects. The waterproof layer reinforcing non-woven fabric of the present invention, the constituent fibers are made of polyester filaments having high heat resistance and are orthogonally arranged, and since the intersections thereof are firmly heat-sealed, the longitudinal, lateral, and bias directions are both excellent when heated. In addition, it has a tensile elastic modulus at room temperature, and has excellent functions essential for reinforcing the waterproof layer such as tensile strength, rupture elongation, and tensile strength. A waterproof layer with excellent durability can be formed, and even in the process of impregnation during heat such as the asphalt roofing manufacturing process, it can be manufactured at high speed with high productivity without entering the stretch width, and residual strain does not easily enter during processing, so it is extremely dimensional. A highly stable waterproof layer can be formed. In a composite material (reinforced composite) having a matrix structure contained in a waterproof material, such as a waterproof layer reinforcement,
Considering the fact that the reinforcing effect of the reinforcing non-woven fabric does not depend on the areal weight of the reinforcing non-woven fabric but depends on the fiber amount of the non-woven fabric constituting fibers, the orthogonal array tissue reinforcing non-woven fabric of the present invention has a structure between the intersection points of the non-woven fabric constituting fibers. Is not bonded with an adhesive that simply bonds, but is a load-bearing component that bears the physical properties of the non-woven fabric as a constituent fiber of the non-woven fabric with the bonding between the intersections.
Since the nonwoven fabric is composed of the composite fiber functioning as t, or the thermal bonding fiber having such a function is mixed to form the nonwoven fabric, the extremely high waterproof layer is combined with the effect of the structure of the nonwoven fabric. It is possible to obtain a reinforcing cloth having a reinforcing efficiency = [reinforcing ability / unit weight]. In order to give high-speed impregnation processability to asphalt with high viscosity such as rubber asphalt during asphalt roofing production, and to improve the permeation performance of high-viscosity waterproof membrane impregnation, the nonwoven fabric constituent fiber shall be 6 denier or more. As a result, a high degree of waterproofing agent impregnating permeability can be maintained even under sufficient thermocompression bonding, and a reinforcing cloth having extremely high workability can be obtained.
【表１】 [Table 1]
【表２】 [Table 2]
───────────────────────────────────────────────────── 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 Ｅ０４Ｄ 5/02 Ｇ 9025−2Ｅ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location E04D 5/02 G 9025-2E
Claims (3)
レンテレフタレート又はポリエチレンテレフタレートを
主成分とした共重合体よりなり、接着成分構成繊維がポ
リエチレンテレフタレート共重合体若しくはポリブチレ
ンテレフタレートまたはこの両者のブレンドポリマー繊
維よりなる長繊維混繊不織布を熱融着せしめてなる不織
布において、該不織布の組織形態を、該不織布の幅方向
切断面における不織布構成繊維切断面形態が、厚み方向
直径対幅方向直径比率６０〜１２０％を示す切断面繊維
本数を全切断面繊維本数の５０％以上包含するように直
交配列せしめた長繊維不織布となし、不織布の長手方向
と幅方向の５％伸張時応力の和が不織布目付け１ｇ／ｍ
2 当たりの換算値を０．３５Ｋｇｆ／５ｃｍ以上となし
たことを特徴とする長繊維不織布。1. A fiber denier comprising polyethylene terephthalate having a denier of 6 denier or more or a copolymer containing polyethylene terephthalate as a main component, and an adhesive component constituting fiber comprising a polyethylene terephthalate copolymer or polybutylene terephthalate or a blended polymer fiber of both of them. In the non-woven fabric obtained by heat-fusing the long-fiber mixed fiber non-woven fabric, the cross-sectional form of the non-woven fabric constituting the non-woven fabric in the cross-section of the non-woven fabric has a thickness direction diameter-to-width direction diameter ratio of 60 to 120. % The number of cut surface fibers is 50% or more of the total number of cut surface fibers and is orthogonally arranged to form a long-fiber non-woven fabric, and the sum of the stresses at 5% elongation in the longitudinal and width directions of the non-woven fabric is 1 g. / M
A long-fiber nonwoven fabric having a converted value per 2 of 0.35 Kgf / 5 cm or more.
断面における不織布構成繊維切断面形態が、厚み方向直
径対幅方向直径比率８０〜１２０％を示すものを６０％
以上包含するように長手方向に配列せしめた層と、該不
織布の長手方向切断面における不織布構成繊維切断面形
態が、厚み方向直径対長手方向直径比率８０〜１２０％
を示すものを６０％以上包含するように幅方向に配列せ
しめた層とを積層させた直交配列組織長繊維不織布とな
したことを特徴とする請求項１記載の長繊維不織布。2. 60% of the texture of the non-woven fabric, in which the cross-sectional form of the non-woven fabric fibers in the cross-section of the non-woven fabric exhibits a ratio of diameter in the thickness direction to diameter in the width direction of 80 to 120%.
The layers arranged in the longitudinal direction so as to include the above and the cut surface morphology of the nonwoven fabric constituting fibers in the cut surface in the longitudinal direction of the nonwoven fabric have a thickness direction diameter to length direction diameter ratio of 80 to 120%.
The long-fiber non-woven fabric according to claim 1, wherein the long-fiber non-woven fabric has an orthogonally arranged texture and is laminated with a layer arranged in the width direction so as to include 60% or more.
を補強布とした防水製品。3. A waterproof product using the long-fiber nonwoven fabric according to claim 1 or 2 as a reinforcing cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5339139A JPH07157960A (en) | 1993-12-06 | 1993-12-06 | Filament nonwoven fabric having excellent dimensional stability and water-proofing article made thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5339139A JPH07157960A (en) | 1993-12-06 | 1993-12-06 | Filament nonwoven fabric having excellent dimensional stability and water-proofing article made thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07157960A true JPH07157960A (en) | 1995-06-20 |
Family
ID=18324612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5339139A Pending JPH07157960A (en) | 1993-12-06 | 1993-12-06 | Filament nonwoven fabric having excellent dimensional stability and water-proofing article made thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07157960A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002038365A (en) * | 2000-07-31 | 2002-02-06 | Toray Ind Inc | Nonwoven fabric for civil engineering and method for producing the same |
| JP2002249971A (en) * | 2001-02-27 | 2002-09-06 | Unitika Ltd | Sheet for reinforcing under-roof material |
| WO2011106793A2 (en) | 2010-02-26 | 2011-09-01 | Marco Industries, Inc. | Closure strip |
| US20150259900A1 (en) * | 2014-03-12 | 2015-09-17 | Tamko Building Products, Inc. | Peel and stick waterproofing material |
| KR20180097515A (en) | 2015-12-22 | 2018-08-31 | 도레이 카부시키가이샤 | Spunbond nonwoven fabric for filter and manufacturing method thereof |
| WO2018221122A1 (en) | 2017-05-30 | 2018-12-06 | 東レ株式会社 | Spunbonded nonwoven fabric for filter and method for producing same |
| CN110996703A (en) * | 2017-09-05 | 2020-04-10 | 日东纺绩株式会社 | Adhesive interlining and laminated composite material |
| US10857759B2 (en) | 2014-03-12 | 2020-12-08 | Tamko Building Products, Llc | Peel and stick waterproofing material |
-
1993
- 1993-12-06 JP JP5339139A patent/JPH07157960A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002038365A (en) * | 2000-07-31 | 2002-02-06 | Toray Ind Inc | Nonwoven fabric for civil engineering and method for producing the same |
| JP4556303B2 (en) * | 2000-07-31 | 2010-10-06 | 東レ株式会社 | Non-woven fabric for civil engineering and manufacturing method thereof |
| JP2002249971A (en) * | 2001-02-27 | 2002-09-06 | Unitika Ltd | Sheet for reinforcing under-roof material |
| JP4618908B2 (en) * | 2001-02-27 | 2011-01-26 | ユニチカ株式会社 | Reinforcing sheet |
| WO2011106793A2 (en) | 2010-02-26 | 2011-09-01 | Marco Industries, Inc. | Closure strip |
| EP2539519A2 (en) * | 2010-02-26 | 2013-01-02 | Marco Industries, Inc. | Closure strip |
| EP2539519A4 (en) * | 2010-02-26 | 2013-07-24 | Marco Ind Inc | Closure strip |
| US8806823B2 (en) | 2010-02-26 | 2014-08-19 | Marco Industries, Inc. | Closure strip |
| US20150259900A1 (en) * | 2014-03-12 | 2015-09-17 | Tamko Building Products, Inc. | Peel and stick waterproofing material |
| US9534378B2 (en) * | 2014-03-12 | 2017-01-03 | Tamko Building Products, Inc. | Peel and stick waterproofing material |
| US9821532B2 (en) | 2014-03-12 | 2017-11-21 | Tamko Building Products, Inc. | Peel and stick waterproofing material |
| US10857759B2 (en) | 2014-03-12 | 2020-12-08 | Tamko Building Products, Llc | Peel and stick waterproofing material |
| KR20180097515A (en) | 2015-12-22 | 2018-08-31 | 도레이 카부시키가이샤 | Spunbond nonwoven fabric for filter and manufacturing method thereof |
| WO2018221122A1 (en) | 2017-05-30 | 2018-12-06 | 東レ株式会社 | Spunbonded nonwoven fabric for filter and method for producing same |
| KR20200014743A (en) | 2017-05-30 | 2020-02-11 | 도레이 카부시키가이샤 | Spunbond Nonwoven Fabric for Filter and Manufacturing Method Thereof |
| CN110996703A (en) * | 2017-09-05 | 2020-04-10 | 日东纺绩株式会社 | Adhesive interlining and laminated composite material |
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