JPH0748826A - Drain member and manufacture thereof - Google Patents

Drain member and manufacture thereof

Info

Publication number
JPH0748826A
JPH0748826A JP4349729A JP34972992A JPH0748826A JP H0748826 A JPH0748826 A JP H0748826A JP 4349729 A JP4349729 A JP 4349729A JP 34972992 A JP34972992 A JP 34972992A JP H0748826 A JPH0748826 A JP H0748826A
Authority
JP
Japan
Prior art keywords
drain material
heat
fiber
melting point
fibers
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
Application number
JP4349729A
Other languages
Japanese (ja)
Other versions
JP3271808B2 (en
Inventor
Tamaaki Namine
璋明 波根
Yuichi Terakawa
裕一 寺川
Taizo Sugihara
泰三 杉原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JNC Corp
Original Assignee
Chisso Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chisso Corp filed Critical Chisso Corp
Priority to JP34972992A priority Critical patent/JP3271808B2/en
Priority to CN93121708A priority patent/CN1071829C/en
Priority to KR1019930026197A priority patent/KR100328371B1/en
Priority to TW082110243A priority patent/TW289056B/en
Publication of JPH0748826A publication Critical patent/JPH0748826A/en
Application granted granted Critical
Publication of JP3271808B2 publication Critical patent/JP3271808B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0004—Synthetics
    • E02D2300/0006—Plastics
    • E02D2300/0017—Plastics thermoplastic
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0075—Textiles
    • E02D2300/0076—Textiles non-woven

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Agronomy & Crop Science (AREA)
  • Civil Engineering (AREA)
  • Soil Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Artificial Filaments (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PURPOSE:To increase the water collecting/draining effect of a drain member and rarely cause clogging by manufacturing the drain member having specific porosity with heat adhesive fibers self-bound by heat fusion. CONSTITUTION:Fibers containing at least 60wt.% of heat adhesive fibers having the fineness of 1-1000d/f are prepared. A fiber web and a nonwoven fabric having the METSUKE of 10-70g/m and the width of 2 (m) or above, for example, are prepared. The fiber web and the nonwoven fabric are heat-treated. The heat-treated fiber web and the nonwoven fabric are wound around a center core while the linear load is adjusted at 30-500g/cm. It is then cooled and solidified, the center core is removed, and a drain member with the length of 4 (m) is obtained, for example. The porosity in the fibers is adjusted at 60-90% by the heat fusion of the heat adhesive fibers, and the relationship between the thickness T and the inner diameter Id is set to 0.15<=T/Id<=0.60.

Description

【発明の詳細な説明】Detailed Description of the Invention

【００１０】[0010]

【産業の利用分野】 本発明は、ドレイン材およびそ
の製造方法に関する。さらに詳しくは、集排水効果が大
きく、軽く、耐圧性に優れ、目詰まりが起こりにくく、
均一な強度、均一な肉厚、任意の空隙率のドレイン材お
よび上記ドレイン材の生産性に優れ、４ｍの土木工事ド
レイン材も簡単に製造できる製造方法に関する。TECHNICAL FIELD The present invention relates to a drain material and a method for manufacturing the same. More specifically, it has a great effect of collecting and draining, is light, has excellent pressure resistance, and is unlikely to cause clogging.
The present invention relates to a drain material having a uniform strength, a uniform wall thickness, and an arbitrary porosity, and a manufacturing method which excels in productivity of the drain material and can easily manufacture a drain material of 4 m in civil engineering work.

【００１１】[0011]

【従来の技術】 土木工事、建築工事、あるいは農業
や園芸分野の集排水工事に使用されるドレイン材は、土
砂中に打ち込み、または埋設して用いられるため、耐圧
強度が必要であり、また水の集水性、排水性の大きいも
のでなければならない。ドレイン材としては、ポリ塩化
ビニル、ポリエチレン等の合成樹脂、コンクリートおよ
び鉄等の有孔管、あるいはその有孔管にポリエステル繊
維等の不織布を表面に巻いたもの、サンドドレイン等が
使われている。また、並列型複合繊維束を熱融着したド
レイン材として、特公昭５５ー４２２１０号公報が知ら
れている。2. Description of the Related Art The drain material used for civil engineering work, construction work, or drainage and drainage work in the fields of agriculture and horticulture is required to be pressure-resistant because it is driven into or buried in the earth and sand. It must have high water collecting and drainage properties. As the drain material, a synthetic resin such as polyvinyl chloride or polyethylene, a perforated pipe such as concrete and iron, or a non-woven fabric such as polyester fiber wound around the perforated pipe, or a sand drain is used. . Further, Japanese Patent Publication No. 55-42210 is known as a drain material obtained by heat-sealing parallel type composite fiber bundles.

【００１２】[0012]

【本発明が解決しようとする課題】 ドレイン材とし
て、天然のサンド及びレキを主に使用していたが、近
年、採掘できる良質のサンド及びレキも少なく、又輸送
及び施工に費用がかかり上記有孔管の併用が一般的にな
っている。上記合成樹脂等の有孔管の場合水は、その孔
からのみ流通するため、集水効果に限界があり、また土
砂が流れ込むため、目詰まりがおこる。そのため、一般
的には表面に不織布を巻いたものが使用されるが、この
場合は確かに表面は集水効果は大きいが、やはり水は有
孔管の無孔部で妨げられるため、排水効果が劣り、か
つ、目詰まりをおこし易い欠点がある。並列型複合繊維
束を熱融着したドレイン材であっても、繊維束で出きて
いるため、繊維が軸方向に並び易く土圧によって縦方向
に裂け易く、また表面のみの融着で良いとされている事
からも全体的に耐圧強度が不足と言う欠点がある。ま
た、棒状もしくは中空状で金型で成形するものとしてい
るため、棒状は当然、中空状のものも肉厚が比較的大き
い物しか製造できず繊維の充填率が高く排水のドレイン
材内を流れる速度が著しく遅くなり排水効果が悪いと言
う欠点があり実用化に至っていない。本発明は、上記従
来のドレイン材の欠点を除き、水の集・排水性が大き
く、目詰まりの生じない、かつ耐圧強度の大きいドレイ
ン材を提供する事にある。[Problems to be Solved by the Invention] Although natural sand and gravel were mainly used as the drain material, in recent years, there are few high-quality sands and rakes that can be mined, and transportation and construction are expensive, and the above-mentioned The combined use of perforated tubes has become common. In the case of a perforated pipe made of the above-mentioned synthetic resin or the like, water flows only from the hole, so that the water collecting effect is limited, and the earth and sand flow into the water, causing clogging. Therefore, a non-woven fabric is generally used on the surface.In this case, the surface certainly has a large water collecting effect, but since water is blocked by the non-perforated pipe, the drainage effect Is inferior, and it is apt to cause clogging. Even if the drain material is obtained by heat-sealing the parallel type composite fiber bundles, since the fibers are coming out in the fiber bundles, the fibers are easily aligned in the axial direction and are easily torn in the longitudinal direction due to earth pressure, and only the surface may be fused. Therefore, there is a drawback that the pressure resistance strength is insufficient as a whole. In addition, since rod-shaped or hollow-shaped molds are used for molding, it is natural that rod-shaped hollow ones can only be manufactured with a relatively large wall thickness, and the fiber filling rate is high and they flow in the drainage drain material. It has not been put to practical use due to the drawback that the speed is extremely slow and the drainage effect is poor. The present invention is to provide a drain material which has a large water collecting / draining property, does not cause clogging and has a high pressure resistance, except for the above-mentioned drawbacks of the conventional drain material.

【００１３】[0013]

【課題を解決するための手段】上記目的を達成するため
に、本発明は、繊度１〜１０００ｄ／ｆの熱接着性繊維
を少なくとも６０重量％以上含む繊維で構成され、その
熱接着性繊維の熱融着により自己結合され空隙率６０〜
９０％の中空ドレイン材で、かつその肉厚（Ｔ）が内径
（Ｉｄ）との関係Ｔ／Ｉｄにおいて次の関係をもつドレ
イン材、０．１５≦Ｔ／Ｉｄ≦０．６０ および熱接着
性繊維を含む繊維を目付１０〜７０ｇ／ｍ2 巾２ｍ以上
の繊維ウエッブおよび不織布とし、この繊維ウエッブお
よび不織布を熱処理し中芯に線圧３０〜５００ｇ／ｃｍ
に調節して所定の外径になるまで巻き上げ、その後冷却
固化し、その後中芯を取り除いた上記のドレイン材の製
造方法である。In order to achieve the above object, the present invention comprises a fiber containing at least 60% by weight or more of a thermoadhesive fiber having a fineness of 1 to 1000 d / f. Self-bonded by heat fusion, porosity 60 ~
90% hollow drain material and its thickness (T) has the following relationship in relation to the inner diameter (Id) T / Id: 0.15 ≦ T / Id ≦ 0.60 and thermal adhesiveness Fibers including fibers are made into a fiber web and a non-woven fabric having a basis weight of 10 to 70 g / m 2 and a width of 2 m or more, and the fiber web and the non-woven fabric are heat treated to have a linear pressure of 30 to 500 g / cm on the core.
The method is a method for producing the above-mentioned drain material in which the core material is removed by winding up until the outer diameter is adjusted to a predetermined outer diameter and then solidifying by cooling.

【００１４】 本発明のドレイン材に用いる繊維は、熱
接着性繊維を少なくとも６０重量％以上含む繊維で構成
されている。本発明の熱接着性繊維は、繊度１〜１００
０ｄ／ｆで、その成分融点以上の温度で熱処理をすると
熱融着する繊維であり、成分の異なる複合繊維でもよ
く、単一の成分からなる単成分繊維でもよく、熱可塑性
樹脂を成分とする。この成分としてポリプロピレン、ポ
リエチレン等の各種ポリオレフインあるいはポリエステ
ル、ナイロン樹脂等を例示できる。また本発明の熱接着
性繊維は、低融点成分と高融点成分を組み合わせた熱可
塑性樹脂を成分とする複合繊維でもよく、複合タイプ
は、鞘芯タイプ、並列タイプでもよい。この複合繊維
は、ポリプロピレン、ポリエチレン等の各種ポリオレフ
インあるいはポリエステル、低融点のポリエステルの組
み合わせあるいはナイロン樹脂等いずれの繊維形成性の
樹脂の低融点と高融点のいずれの組み合わせであって
も、低融点の融点以上高融点の融点以下の熱処理で自己
結合が生じるものであれば良い。この複合繊維の融点差
は、１０〜２０℃あると加工がし易く、好ましい。The fibers used for the drain material of the present invention are composed of fibers containing at least 60% by weight of heat-bonding fibers. The heat adhesive fiber of the present invention has a fineness of 1 to 100.
It is a fiber that is heat-sealed when heat-treated at a temperature of 0 d / f or higher than the melting point of the component, and may be a composite fiber having different components or a single component fiber composed of a single component, which contains a thermoplastic resin as a component. . Examples of this component include various polyolefins such as polypropylene and polyethylene, polyesters, nylon resins and the like. Further, the thermoadhesive fiber of the present invention may be a composite fiber containing a thermoplastic resin in which a low melting point component and a high melting point component are combined, and the composite type may be a sheath core type or a parallel type. This composite fiber has a low melting point regardless of whether it is a combination of various polyolefins or polyesters such as polypropylene and polyethylene, a combination of polyesters with a low melting point, or a low melting point and a high melting point of any fiber-forming resin such as nylon resin. What is necessary is that self-bonding is caused by heat treatment at a melting point or higher and a high melting point or lower. The melting point difference of this composite fiber is preferably 10 to 20 ° C. because it is easy to process.

【００１５】 本発明の熱接着性繊維でない４０重量％
未満の他の繊維は、熱処理を行っても自己結合しない繊
維であり、ポリエステルのような熱可塑性樹脂であって
もよく、綿、麻など熱可塑でない繊維であってもよい。
本発明のドレイン材は、中空ドレイン材であり、その肉
厚（Ｔ）は、内径（Ｉｄ）との関係Ｔ／Ｉｄにおいて次
の関係を必須とする。（単位ｍｍ） ０．１５≦Ｔ／Ｉｄ≦０．６０ 肉厚（Ｔ）が薄くＴ／Ｉｄが０．１５未満では、耐圧性
が不足し、土圧破損し、打ち込み強度も不十分である。
逆に肉厚（Ｔ）が厚すぎＴ／Ｉｄが０．６０を越えると
集排水性が悪い。このため好ましくは、０．２０≦Ｔ／
Ｉｄ≦０．５０である。また、ドレイン材の外径は、通
水量と扱いのよさから通例５０〜３００ｍｍの範囲のも
のが多いが、本発明は工事に使用されるものであれば、
その範囲を越えるものであっても良い。本発明のドレイ
ン材は、圧縮強度３０Ｋｇ／１０ｃｍ以上が好ましく、
より好ましくは５０〜２００Ｋｇ／１０ｃｍであると集
排水効果が大きく、軽く、耐圧性に優れ、目詰まりが起
こりにくく、生産性の優れたドレイン材となる。40% by weight not the thermoadhesive fiber of the invention
The other fibers below are fibers that do not self-bond even when subjected to heat treatment, and may be a thermoplastic resin such as polyester, or may be a non-thermoplastic fiber such as cotton or hemp.
The drain material of the present invention is a hollow drain material, and its wall thickness (T) requires the following relationship in the relationship T / Id with the inner diameter (Id). (Unit: mm) 0.15 ≦ T / Id ≦ 0.60 When the wall thickness (T) is thin and T / Id is less than 0.15, pressure resistance is insufficient, earth pressure is damaged, and driving strength is insufficient. .
On the contrary, if the wall thickness (T) is too thick and T / Id exceeds 0.60, the drainage and drainage property is poor. Therefore, preferably 0.20 ≦ T /
Id ≦ 0.50. In addition, the outer diameter of the drain material is usually in the range of 50 to 300 mm because of the water flow rate and the ease of handling, but the present invention is not limited as long as it is used for construction.
It may exceed the range. The drain material of the present invention preferably has a compressive strength of 30 kg / 10 cm or more,
More preferably, when it is 50 to 200 kg / 10 cm, the drainage material has a large effect of collecting and draining, is light, has excellent pressure resistance, is unlikely to cause clogging, and has excellent productivity.

【００１６】 本第２の発明のドレイン材の製造方法
は、熱接着性繊維を少なくとも６０重量％以上含む繊維
を目付１０〜７０ｇ／ｍ2 巾２ｍ以上の繊維ウエッブお
よび不織布とし、この繊維ウエッブおよび不織布を熱処
理し中芯に所定の外径になるまで巻き上げ、その後冷却
固化し、その後中芯を取り除く方法である。本発明の繊
維ウエッブは、熱接着性繊維を含む繊維を目付１０〜７
０ｇ／ｍ2巾２ｍ以上になるようカードその他の開繊機
により得たウエッブ、スパンボンド法ウェブ、メルトブ
ロー法ウェブなどである。また不織布は、サーマルボン
ド法、バインダー接着法、およびニードルパンチなどに
よる機械的絡合による乾式不織布あるいは抄紙による湿
式不織布などいずれの不織布を使用できる。In the method for producing a drain material according to the second aspect of the present invention, a fiber web and a nonwoven fabric having a basis weight of 10 to 70 g / m 2 and a width of 2 m or more are produced by using a fiber containing at least 60% by weight of a heat-adhesive fiber. This is a method in which a nonwoven fabric is heat-treated, wound up on a core to a predetermined outer diameter, then cooled and solidified, and then the core is removed. The fiber web of the present invention has a basis weight of 10 to 7 fibers including heat-bondable fibers.
The web, spunbond web, meltblown web, etc. obtained by a card opening machine such as a card having a width of 0 g / m 2 width of 2 m or more. As the non-woven fabric, any of non-woven fabrics such as a thermal bonding method, a binder bonding method, a dry non-woven fabric by mechanical entanglement by needle punching, or a wet non-woven fabric by paper making can be used.

【００１７】 次に上記特定されたウエッブおよび不織
布を熱処理する。このウエッブおよび不織布の熱接着性
繊維を溶融し、他の繊維を溶融しない温度で熱処理す
る。また低融点成分と高融点成分を組み合わせた複合熱
接着性繊維であっては、低融点成分が溶融し高融点成分
が溶融しない温度で熱処理することが一般的である。他
の繊維、例えばポリエステルの融点以上の温度であって
も短時間であれば融点以上の温度で熱処理してもよく、
また複合熱接着性繊維の高融点成分の融点以上の温度で
あっても短時間であれば融点以上の温度で熱処理しても
よい。これにより、熱接着性繊維は、溶融しこの溶融分
が接する繊維と融着し、溶融しない他の繊維、複合繊維
の高融点成分が繊維形状を残し、繊維集合体の嵩高を保
つ。本発明の目的から、加熱媒体、加熱媒体温度、加熱
時間、加熱媒体風速が選ばれ、熱接着性繊維の融点以
上、他の繊維の融点以下の温度に加熱した空気、蒸気
を、繊維ウエッブおよび不織布にあて、低融点成分を溶
融し、接する繊維と融着することができる。また繊維形
状を変形しない短時間であれば、熱接着性繊維の融点以
上の温度であってもよい。このため、より好ましくは風
速０．２〜５m/sec、加熱時間１〜６０sec 、低融点成
分融点の２℃以上５０℃以下の温度の熱風で熱処理加工
する。Next, the above-specified web and nonwoven fabric are heat-treated. The heat-adhesive fibers of the web and the nonwoven fabric are melted and heat-treated at a temperature that does not melt other fibers. Further, in the case of the composite thermo-adhesive fiber in which the low melting point component and the high melting point component are combined, it is common to heat-treat at a temperature at which the low melting point component does not melt but the high melting point component does not melt. Other fibers, for example, may be heat-treated at a temperature above the melting point for a short time even at a temperature above the melting point of polyester,
Further, even if the temperature is higher than the melting point of the high melting point component of the composite thermo-adhesive fiber, it may be heat treated at a temperature higher than the melting point for a short time. As a result, the heat-adhesive fibers are melted and fused with the fibers in contact with the melted components, and the other fibers that are not melted and the high-melting point component of the composite fiber leave a fiber shape, and the bulkiness of the fiber assembly is maintained. For the purpose of the present invention, heating medium, heating medium temperature, heating time, heating medium wind speed is selected, the air heated above the melting point of the heat-adhesive fiber, the melting point of other fibers, steam, the fiber web and The low melting point component can be melted and applied to the non-woven fabric to be fused with the fibers in contact therewith. The temperature may be higher than the melting point of the heat-adhesive fiber as long as it does not deform the fiber shape. Therefore, more preferably, the heat treatment is performed with hot air having a wind speed of 0.2 to 5 m / sec, a heating time of 1 to 60 sec, and a low melting point component melting point of 2 ° C. or more and 50 ° C. or less.

【００１８】 この熱処理方法は、一般にサーマルボン
デイング不織布に用いられる熱風循環式あるいは熱風吸
引型あるいは遠赤外線照射式などで熱接着性繊維成分の
融点以上の温度に上がるものであればいずれでも使用で
きる。中でも１〜１００ sec、低融点成分融点の２℃以
上５０℃以下の温度の熱風で加工することが好ましい。
中芯に巻き付ける繊維ウエッブおよび不織布の目付け
は、１０〜７０ｇ／ｍ2であり、１０ｇ／ｍ2 未満であ
ると所定の肉厚に巻き上げるに時間が掛かりすぎ、開繊
機によってはきれいにウエッブまたは不織布がとれな
い。また７０ｇ／ｍ2 を越えると充分にウエッブ全体ま
たは不織布に熱がいきわたるには時間が掛かり過ぎた
り、あるいは熱接着が均一にならず充分な接着強力が得
にくい。As this heat treatment method, any hot air circulation type, hot air suction type, far infrared ray irradiation type or the like which is generally used for thermal bonding nonwoven fabrics can be used as long as the temperature is higher than the melting point of the heat adhesive fiber component. Above all, it is preferable to perform processing with hot air having a temperature of 2 ° C. or more and 50 ° C. or less, which is the melting point of the low melting point component for 1 to 100 seconds.
Fibrous web and nonwoven having a basis weight of winding the corrugated medium is 10~70g / m 2, is less than 10 g / m 2 too much time to wind up a predetermined thickness, elegantly web or nonwoven fabric by opening machine Can not be removes. On the other hand, if it exceeds 70 g / m 2 , it takes too much time for the heat to spread to the entire web or the nonwoven fabric, or the heat bonding is not uniform and it is difficult to obtain sufficient bonding strength.

【００１９】 中芯に巻き付ける繊維ウエッブおよび不
織布の巾は、一般には２ｍ以上であり、２ｍ未満である
と本発明ドレイン材の用途、土木、建築、農業や園芸分
野で用いるには繋ぎカ所が多くなり作業工数が多くなり
実用的ではない。好ましくは、３〜１０ｍが望ましく、
長尺標準の４ｍものを製造しやすい長さのものがよい。
中芯は、通例は円筒状であり、その内径と外径は下記不
等式の条件に合う範囲で状況に応じて設定しなければな
らない。又、四角形、三角形であってもその内接円と外
接円を想定すれば同様に考えられる。The width of the fibrous web and the non-woven fabric wound around the core is generally 2 m or more. If the width is less than 2 m, there are many connecting points for use of the drain material of the present invention, civil engineering, construction, agriculture and horticultural fields. It is not practical because it requires a lot of man-hours. Preferably, 3 to 10 m is desirable,
It is preferable that the length is 4 m, which is a long standard, so that it is easy to manufacture.
The center core is usually cylindrical, and its inner diameter and outer diameter must be set according to the situation within the range satisfying the conditions of the following inequality. Further, even if it is a quadrangle or a triangle, the same can be considered if the inscribed circle and the circumscribed circle are assumed.

【００２０】 次に、繊維ウエッブおよび不織布は、線
圧３０〜５００ｇ／ｃｍに調節して巻き上げる。この線
圧の調整方法は、中芯となるパイプ、棒の自重でもよ
く、パイプ、棒の両端をエア−シリンダ−などで調節し
たものでもよい。パイプ、棒の両端をエア−シリンダ−
などで調節すると、ドレイン材の肉厚の空隙率を任意に
調節できた。Next, the fibrous web and the non-woven fabric are wound by adjusting the linear pressure to 30 to 500 g / cm. The linear pressure may be adjusted by the weight of the core pipe or rod, or by adjusting both ends of the pipe or rod with an air cylinder. Both ends of pipe and rod are air-cylinder-
The porosity of the wall thickness of the drain material could be arbitrarily adjusted by adjusting with, for example.

【００２１】 繊維ウエッブおよび不織布の巻き上げ圧
を数段回に変更し、中芯部分の巻き上げ圧を高く、外周
部を低くエア−シリンダ−などで調節し、ドレイン材の
肉厚の空隙率を任意に調節したものは、また空隙率、繊
度の異なるウエッブまたは不織布に途中から変更するこ
とで中芯部、外周部の空隙率、ろ過精度を替えることも
でき、中芯部を密に、外周部を粗くすることで、長時間
にわたり目詰まりすることなく使用できた。The winding pressure of the fibrous web and the non-woven fabric is changed to several stages, the winding pressure of the core portion is increased and the outer peripheral portion is adjusted low with an air cylinder, etc., and the porosity of the wall thickness of the drain material is arbitrarily adjusted. In addition, by adjusting to a web or non-woven fabric with different porosity and fineness, the porosity and filtration accuracy of the central core and the outer peripheral part can be changed. By roughening, it could be used for a long time without clogging.

【実施例】【Example】

【００２２】 以下本発明を実施例で更に詳細に説明
する。尚、各例の評価は、以下の方法で行った。 （繊維成分） ＨＤＰＥ：融点１３２℃の高密度ポリエチレン ＰＰ ：融点１６５℃のポリプロピレン ＬＰＥＴ：融点１３０℃のポリエステル ＰＥＴ ：融点２５４℃のポリエステル （空隙率）以下の式により算出する。 （生産性）ドレーン材を製造し、均一に容易に製造でき
るものを○、そうでないものを×とした。 （耐圧試験）直径１５ｃｍの２枚の円盤の間に長さ１０
ｃｍドレイン材を横置きし、10mm/minの速度で圧縮し、
その降伏点強度を求め耐圧試験とした。（単位Ｋｇ／１
０ｃｍ） （目詰まり）ドレイン材を軟弱地盤に打ち込んで使用し ◎：３年以上排水量が変化しなかった。 ○：１年以上排水量が変化しなかった。 ×：１カ月から排水量が低下した。 （通水量）図１に示したドレイン材の通水量試験装置で
測定した。ドレイン材を１ｍに切断し、給水水槽側パイ
プと排水水槽側パイプの間にこのドレイン材を取付け、
ドレイン材外周面を熱収縮フイルムで覆った。あらかじ
めドレイン材内の気泡を取り除くため給水・排水水槽間
の水頭差Ｈを５mmの状態で３０分通水し、その後水頭差
Ｈ３０mmの状態で安定してから６０秒当たりの通水量を
３回連続測定しその平均を求め外径断面積当たりの通水
量とした。断面積［（外径／２）2π］あたり６０秒あ
たりの通水量（単位ｃｃ／ｃｍ2） （評価）以上、生産性、耐圧試験、目詰まり試験、通水
量の評価を総合的に判断し、問題のあるものを×とし、
そうでないものを○とした。なお、それぞれの実施例、
比較例における熱処理温度は、熱電対を用いた非接触温
度計で測定した。Hereinafter, the present invention will be described in more detail with reference to Examples. The evaluation of each example was performed by the following method. (Fiber component) HDPE: high-density polyethylene having a melting point of 132 ° C. PP: polypropylene having a melting point of 165 ° C. LPET: polyester having a melting point of 130 ° C. PET: polyester having a melting point of 254 ° C. (porosity) Calculated by the following formula. (Productivity) A drain material was manufactured and was easily manufactured uniformly. (Pressure resistance test) Length 10 between two disks with a diameter of 15 cm
cm drain material is placed horizontally and compressed at a speed of 10 mm / min,
The yield strength was determined and used as a pressure resistance test. (Unit Kg / 1
(0 cm) (clogging) Drain material was driven into soft ground for use ◎: The amount of discharged water did not change for more than 3 years. ○: The amount of discharged water did not change for one year or more. X: The amount of discharged water decreased from one month. (Water flow rate) The water flow rate was measured by the water flow rate test apparatus for the drain material shown in FIG. Cut the drain material to 1 m and attach this drain material between the water supply tank side pipe and the drainage water tank side pipe,
The outer peripheral surface of the drain material was covered with a heat shrink film. In order to remove air bubbles in the drain material in advance, water is passed for 30 minutes with the water head difference H between the water supply and drainage water tanks of 5 mm, and after that, the water head difference H of 30 mm has been stabilized and the water flow rate per 60 seconds is repeated three times. The measurement was performed and the average thereof was calculated and used as the water flow rate per outer diameter cross-sectional area. Cross-sectional area [(outer diameter / 2) 2 π] per 60 seconds water flow rate (unit: cc / cm 2 ) (evaluation) Above, productivity, pressure resistance test, clogging test, water flow rate evaluation comprehensively judged If there is a problem, mark x,
Those that were not were rated as ○. In addition, each example,
The heat treatment temperature in the comparative example was measured by a non-contact thermometer using a thermocouple.

【００２３】実施例１〜３ 実施例１．鞘側低融点成分、芯側高融点成分として、そ
れぞれ、表１に示したポリマーを用い、孔径０．６ｍ
ｍ、孔数３５０個の鞘芯型複合口金を用いて、鞘芯型熱
接着性繊維の未延伸糸を紡糸した。この鞘芯型熱接着性
繊維の未延伸糸をロール延伸装置を用いて１００℃に加
熱しながら４倍延伸し、クリンパー数１２／インチで捲
縮を付与した後に、カッターで切断して単糸繊度３２ｄ
／ｆ、カット長６４ｍｍの鞘芯型複合熱接着性繊維を得
た。得られたステープルファイバーをカード機にて巾
４．２ｍ、目付け２０ｇ／m2のウェブとした後、サクシ
ョンドライヤー（風速１．５ｍ／ｓｅｃ、加工時間１５
秒、ネットコンベアー速度１０ｍ／ｍｉｎ）にて熱処理
加工した。得られた低融点成分が溶融した状態のウェブ
を外径３０ｍｍ、４０ｇ／ｃｍのステンレス製中芯に自
重で加圧しながら巻取った。室温のブロア−風で冷却し
た後、長さ４ｍに切断し、内径３０、外径５０ｍｍのド
レイン材とした。このドレイン材は容易に製造でき、丈
夫で、外観の均一のものであった。このドレイン材の評
価を表１に示した。 実施例２．および３は、表１記載の成分、製法、外径な
どを実施例１に準じ製造し、このドレイン材の評価を表
１に示した。 実施例４〜６、実施例４は、並列タイプの低融点ＰＥＴ
（ＬＰＥＴ）／ＰＥＴの複合繊維に、他繊維として６５
ｄ／ｆRegＰＰを３５重量％加えた。実施例５では複合
繊維を用いず、６ｄ／ｆRegＰＰ７０重量％と１５ｄ／
ｆRegＰＥＴ３０重量％の混紡を用い、実施例１に準
じ、このドレイン材の評価を表１に示した。実施例６
は、鞘芯タイプのＨＤＰＥ／ＰＰの複合繊維１００％の
熱接着性繊維による不織布を巻き付けドレイン材とし
た。実施例７では、初め実施例１と同様な熱接着性複合
繊維をステンレス製中芯に巻き付け空隙率７５％肉厚１
６mmとした。この後空隙率８８％肉厚１６mmの二層目構
造とした以外は、実施例１に準じ、このドレイン材の評
価を表１に示した。ドレイン材として使用するには、耐
圧強度で３０Kg/10cm以上必要であるが、本発明のドレ
イン材は耐圧強度で５０Kg/10cm以上あり強かった。ま
たドレイン材として使用するには、排水量３００cc/cm2
以上必要であるが、本発明のドレイン材は排水量４００
cc/cm2以上通水できた。 比較例１〜３ 比較例１は、従来の製造方法で、表１の成分、外径２０
ｍｍの中芯のある内径６０ｍｍ長さ４０ｃｍの中空管に
１８ｄ／ｆの実施例１に準じた熱接着性複合繊維を１５
ｍｍΦの丸棒で充填し、１４０℃の熱風循環器に１０分
熱処理した。この従来法の生産性は、中空管に詰める作
業など簡単ではなかった。このドレイン材の外観は、不
均一形状であり、断面を切断すると表面のみ融着し、芯
側は融着していない繊維があった。他の評価を表１に示
す。比較例２，３は、表１に示された肉厚の厚いもの、
薄いもの以外は実施例１に準じ、評価を表１に示す。Examples 1 to 3 Example 1. As the sheath-side low melting point component and the core-side high melting point component, the polymers shown in Table 1 were used, and the pore diameter was 0.6 m.
An undrawn yarn of the sheath-core type heat-bondable fiber was spun using a sheath-core type composite spinneret having m and 350 holes. The unstretched yarn of the sheath-core type heat-adhesive fiber is stretched 4 times while being heated to 100 ° C. using a roll stretching device, crimped with a crimper number of 12 / inch, and then cut with a cutter to obtain a single yarn. Fineness 32d
A sheath-core type composite heat-bondable fiber having a cut length of / f and a cut length of 64 mm was obtained. The staple fiber thus obtained was made into a web having a width of 4.2 m and a basis weight of 20 g / m 2 with a card machine, and a suction dryer (wind speed 1.5 m / sec, processing time 15
Second, heat treatment was performed at a net conveyor speed of 10 m / min). The obtained web in which the low melting point component was melted was wound around a stainless steel core having an outer diameter of 30 mm and 40 g / cm while applying pressure under its own weight. After cooling with a blower air at room temperature, it was cut into a length of 4 m to obtain a drain material having an inner diameter of 30 and an outer diameter of 50 mm. This drain material was easy to manufacture, durable and of uniform appearance. The evaluation of this drain material is shown in Table 1. Example 2. For Nos. 3 and 3, the components described in Table 1, the manufacturing method, the outer diameter, etc. were manufactured according to Example 1, and the evaluation of this drain material is shown in Table 1. Examples 4 to 6 and Example 4 are parallel type low melting point PET.
(LPET) / PET composite fiber, 65 as other fiber
35% by weight of d / fRegPP was added. In Example 5, the composite fiber was not used, and 6d / fRegPP 70 wt% and 15d /
The evaluation of this drain material is shown in Table 1 according to Example 1 using a blended fabric of 30 wt% fRegPET. Example 6
Was wound with a non-woven fabric made of a heat-adhesive fiber of 100% sheath-core type HDPE / PP composite fiber, and used as a drain material. In Example 7, first, the same heat-bondable composite fiber as in Example 1 was wrapped around a stainless steel core, and the porosity was 75% and the wall thickness was 1
It was 6 mm. After that, according to Example 1 except that the second layer structure having a porosity of 88% and a wall thickness of 16 mm was used, the evaluation of this drain material is shown in Table 1. To use it as a drain material, it is necessary to have a pressure resistance of 30 kg / 10 cm or more, but the drain material of the present invention has a pressure resistance of 50 kg / 10 cm or more, which is strong. To use it as a drain material, the drainage is 300cc / cm 2
Although the above is required, the drainage material of the present invention has a drainage of 400
Water could pass over cc / cm 2 . Comparative Examples 1 to 3 Comparative Example 1 is a conventional manufacturing method, in which the components shown in Table 1 and the outer diameter 20 are used.
Into a hollow tube having an inner diameter of 60 mm and an inner diameter of 60 mm and a length of 40 cm, 15 d of the thermoadhesive conjugate fiber according to Example 1 of 18 d / f was used.
It was filled with a round bar of mmΦ and heat-treated in a hot air circulator at 140 ° C. for 10 minutes. The productivity of this conventional method is not easy, such as filling a hollow tube. The appearance of this drain material was inhomogeneous, and when the cross section was cut, only the surface was fused and some fibers were not fused on the core side. Other evaluations are shown in Table 1. Comparative Examples 2 and 3 have thick wall thicknesses shown in Table 1,
Evaluations are shown in Table 1 according to Example 1 except for the thin one.

【００２４】[0024]

【発明の効果】 本発明のドレイン材は、全て繊維で
出来、熱接着性繊維によってその接点が全てが自己結合
されているので、集水性は抜群でかつ目詰まりもなかっ
た。本発明のドレイン材は、特定された空隙率、肉厚で
あるため、通水量も落ちる事なく大きな排水量が得ら
れ、ドレイン材として最適のものであった。EFFECTS OF THE INVENTION Since the drain material of the present invention is made entirely of fibers and all its contacts are self-bonded by the heat-adhesive fibers, the water collection is excellent and there is no clogging. Since the drain material of the present invention has the specified porosity and wall thickness, a large amount of drainage can be obtained without reducing the amount of water flow, and it was the most suitable drain material.

【００２５】 従来の中芯のある金型に充填する製法と
異なり、本発明のドレイン材は中芯に特定されたウエッ
ブを特定肉厚になるよう巻き上げ、冷却固化し、中芯を
取り除く簡単な製造で得ることができた。本発明のドレ
イン材は、巾広ウエッブを巻き上げ製造することもで
き、土木、建築、農業園芸の集排水工事用の標準サイズ
である４ｍものを得ることも簡単であった。従来の中芯
のある金型に繊維束を押し込み充填するため成形したド
レイン材は、不均一充填となり断面折れしやすく、軸方
向に繊維を並べた従来の製法では、縦方向に裂け易く、
土圧によって破損し易い。この従来法と異なり本発明の
ドレイン材は、中芯に特定されたウエッブを特定肉厚に
なるよう特定圧力で巻き上げ、冷却固化し、中芯を取り
除いて製造したので、均一な強度、均一な肉厚、任意の
空隙率のドレイン材の製造は、容易であった。また 本
発明のドレイン材は、えん堤、道路、ダム、排水路、鉄
道、トンネル、埋め立て地、等の排水用として、これら
の地盤に垂直に打ち込み、または平行に敷設して用いら
れる。 そのほか軟弱地盤の改良、泥土からの水の吸い
出し等の広範囲の用途に用いられる。Unlike the conventional method of filling a mold with a core, the drain material of the present invention is a simple method of winding the web specified as the core to a specific thickness, solidifying by cooling, and removing the core. It could be obtained by manufacturing. The drain material of the present invention could be manufactured by rolling up a wide web, and it was easy to obtain a standard size of 4 m for collecting and draining construction of civil engineering, construction, agriculture and horticulture. The drain material molded to press and fill the fiber bundle into the conventional mold with a core is non-uniformly filled, and the cross-section is easily broken.In the conventional manufacturing method in which the fibers are arranged in the axial direction, it is easy to tear in the longitudinal direction,
It is easily damaged by earth pressure. Unlike this conventional method, the drain material of the present invention is manufactured by winding up the web specified as the core with a specific pressure so as to have a specific thickness, cooling and solidifying, and removing the core, so that the uniform strength and uniform It was easy to manufacture a drain material having a wall thickness and an arbitrary porosity. Further, the drain material of the present invention is used for drainage of levees, roads, dams, drainage channels, railways, tunnels, landfills, etc. by vertically driving or laying parallel to these grounds. In addition, it is used for a wide range of applications such as improving soft ground and sucking water from mud.

【００２６】[0026]

【表１】 [Table 1]

【００２７】[0027]

【図面の簡単な説明】[Brief description of drawings]

【図１】 ドレイン材通水試験装置の側面概略説明図FIG. 1 is a schematic side view of a drain material water flow test device.

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成５年１２月１４日[Submission date] December 14, 1993

【手続補正１】[Procedure Amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】全文[Correction target item name] Full text

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【書類名】 明細書[Document name] Statement

【発明の名称】 ドレイン材およびその製造方
法Title: Drain material and method for manufacturing the same

【特許請求の範囲】[Claims]

【発明の詳細な説明】Detailed Description of the Invention

【００１０】[0010]

【産業の利用分野】 本発明は、ドレイン材およびそ
の製造方法に関する。さらに詳しくは、集排水効果が大
きく、軽く、耐圧性に優れ、目詰まりが起こりにくく、
均一な強度、均一な肉厚、任意の空隙率のドレイン材お
よび上記ドレイン材の生産性に優れ、４ｍの土木工事ド
レイン材も簡単に製造できる製造方法に関する。TECHNICAL FIELD The present invention relates to a drain material and a method for manufacturing the same. More specifically, it has a great effect of collecting and draining, is light, has excellent pressure resistance, and is unlikely to cause clogging.
The present invention relates to a drain material having a uniform strength, a uniform wall thickness, and an arbitrary porosity, and a manufacturing method which excels in productivity of the drain material and can easily manufacture a drain material of 4 m in civil engineering work.

【００１１】[0011]

【従来の技術】 土木工事、建築工事、あるいは農業
や園芸分野の集排水工事に使用されるドレイン材は、土
砂中に打ち込み、または埋設して用いられるため、耐圧
強度が必要であり、また水の集水性、排水性の大きいも
のでなければならない。ドレイン材としては、ポリ塩化
ビニル、ポリエチレン等の合成樹脂、コンクリートおよ
び鉄等の有孔管、あるいはその有孔管にポリエステル繊
維等の不織布を表面に巻いたもの、サンドドレイン等が
使われている。また、並列型複合繊維束を熱融着したド
レイン材として、特公昭５５−４２２１０号公報が知ら
れている。2. Description of the Related Art The drain material used for civil engineering work, construction work, or drainage and drainage work in the fields of agriculture and horticulture is required to be pressure-resistant because it is driven into or buried in the earth and sand. It must have high water collecting and drainage properties. As the drain material, a synthetic resin such as polyvinyl chloride or polyethylene, a perforated pipe such as concrete and iron, or a non-woven fabric such as polyester fiber wound around the perforated pipe, or a sand drain is used. . Further, Japanese Patent Publication No. 55-42210 is known as a drain material obtained by heat-sealing parallel type composite fiber bundles.

【００１２】[0012]

【本発明が解決しようとする課題】 ドレイン材とし
て、天然のサンド及びレキを主に使用していたが、近
年、採掘できる良質のサンド及びレキも少なく、又輸送
及び施工に費用がかかり上記有孔管の併用が一般的にな
っている。上記合成樹脂等の有孔管の場合水は、その孔
からのみ流通するため、集水効果に限界があり、また土
砂が流れ込むため、目詰まりがおこる。そのため、一般
的には表面に不織布を巻いたものが使用されるが、この
場合は確かに表面は集水効果は大きいが、やはり水は有
孔管の無孔部で妨げられるため、排水効果が劣り、か
つ、目詰まりをおこし易い欠点がある。並列型複合繊維
束を熱融着したドレイン材であっても、繊維束で出きて
いるため、繊維が軸方向に並び易く土圧によって縦方向
に裂け易く、また表面のみの融着で良いとされている事
からも全体的に耐圧強度が不足と言う欠点がある。ま
た、棒状もしくは中空状で金型で成形するものとしてい
るため、棒状は当然、中空状のものも肉厚が比較的大き
い物しか製造できず繊維の充填率が高く排水のドレイン
材内を流れる速度が著しく遅くなり排水効果が悪いと言
う欠点があり実用化に至っていない。本発明は、上記従
来のドレイン材の欠点を除き、水の集・排水性が大き
く、目詰まりの生じない、かつ耐圧強度の大きいドレイ
ン材を提供する事にある。[Problems to be Solved by the Invention] Although natural sand and gravel were mainly used as the drain material, in recent years, there are few high-quality sands and rakes that can be mined, and transportation and construction are expensive, and the above-mentioned The combined use of perforated tubes has become common. In the case of a perforated pipe made of the above-mentioned synthetic resin or the like, water flows only from the hole, so that the water collecting effect is limited, and the earth and sand flow into the water, causing clogging. Therefore, a non-woven fabric is generally used on the surface.In this case, the surface certainly has a large water collecting effect, but since water is blocked by the non-perforated pipe, the drainage effect Is inferior, and it is apt to cause clogging. Even if the drain material is obtained by heat-sealing the parallel type composite fiber bundles, since the fibers are coming out in the fiber bundles, the fibers are easily aligned in the axial direction and are easily torn in the longitudinal direction due to earth pressure, and only the surface may be fused. Therefore, there is a drawback that the pressure resistance strength is insufficient as a whole. In addition, since rod-shaped or hollow-shaped molds are used for molding, it is natural that rod-shaped hollow ones can only be manufactured with a relatively large wall thickness, and the fiber filling rate is high and they flow in the drainage drain material. It has not been put to practical use due to the drawback that the speed is extremely slow and the drainage effect is poor. The present invention is to provide a drain material which has a large water collecting / draining property, does not cause clogging and has a high pressure resistance, except for the above-mentioned drawbacks of the conventional drain material.

【００１３】[0013]

【課題を解決するための手段】上記目的を達成するため
に、本発明は、繊度１〜１０００ｄ／ｆの熱接着性繊維
を少なくとも６０重量％含む繊維で構成され、その熱接
着性繊維の熱融着により自己結合され空隙率６０〜９０
％の中空ドレイン材で、かつその肉厚（Ｔ）が内径（Ｉ
ｄ）との関係Ｔ／Ｉｄにおいて次の関係を満足すること
を特徴とするドレイン材、０．１５≦Ｔ／Ｉｄ≦０．６
０、および熱接着性繊維を含む繊維を目付１０〜７０ｇ
／ｍ２巾２ｍ以上の繊維ウエッブおよび不織布とし、こ
の繊維ウエッブおよび不織布を熱処理し中芯に線圧３０
〜５００ｇ／ｃｍに調節して所定の外径になるまで巻き
上げ、その後冷却固化し、その後中芯を取り除いた上記
のドレイン材の製造方法である。In order to achieve the above object, the present invention comprises a fiber containing at least 60% by weight of a heat-adhesive fiber having a fineness of 1 to 1000 d / f, and heat of the heat-adhesive fiber is Self-bonded by fusion and porosity 60-90
% Hollow drain material and its wall thickness (T) is the inner diameter (I
d) a drain material characterized by satisfying the following relationship in T / Id, 0.15 ≦ T / Id ≦ 0.6
0, and 10 to 70 g of fiber including heat-adhesive fiber
/ M 2 and width 2m or more fibrous web and nonwoven, linear pressure 30 to corrugated medium heat treatment of the fiber web and nonwoven fabric
It is a method for producing the above drain material, which is adjusted to ˜500 g / cm and wound up to a predetermined outer diameter, then cooled and solidified, and then the core is removed.

【００１４】 本発明のドレイン材に用いる繊維は、熱
接着性繊維を少なくとも６０重量％以上含む繊維で構成
されている。本発明の熱接着性繊維は、繊度１〜１００
０ｄ／ｆで、その成分融点以上の温度で熱処理をすると
熱融着する繊維であり、成分の異なる複合繊維でもよ
く、単一の成分からなる単成分繊維でもよく、熱可塑性
樹脂を成分とする。この成分としてポリプロピレン、ポ
リエチレン等の各種ポリオレフインあるいはポリエステ
ル、ナイロン樹脂等を例示できる。また本発明の熱接着
性繊維は、低融点成分と高融点成分を組み合わせた熱可
塑性樹脂を成分とする複合繊維でもよく、複合タイプ
は、鞘芯タイプ、並列タイプでもよい。この複合繊維
は、ポリプロピレン、ポリエチレン等の各種ポリオレフ
インあるいはポリエステル、低融点のポリエステルの組
み合わせあるいはナイロン樹脂等いずれの繊維形成性の
樹脂の低融点と高融点のいずれの組み合わせであって
も、低融点の融点以上高融点の融点以下の熱処理で自己
結合が生じるものであれば良い。この複合繊維の融点差
は、１０℃以上が好ましく、２０℃以上あると加工がし
易く、より好ましい。The fibers used for the drain material of the present invention are composed of fibers containing at least 60% by weight of heat-bonding fibers. The heat adhesive fiber of the present invention has a fineness of 1 to 100.
It is a fiber that is heat-sealed when heat-treated at a temperature of 0 d / f or higher than the melting point of the component, and may be a composite fiber having different components or a single component fiber composed of a single component, which contains a thermoplastic resin as a component. . Examples of this component include various polyolefins such as polypropylene and polyethylene, polyesters, nylon resins and the like. Further, the thermoadhesive fiber of the present invention may be a composite fiber containing a thermoplastic resin in which a low melting point component and a high melting point component are combined, and the composite type may be a sheath core type or a parallel type. This composite fiber has a low melting point regardless of whether it is a combination of various polyolefins or polyesters such as polypropylene and polyethylene, a combination of polyesters with a low melting point, or a low melting point and a high melting point of any fiber-forming resin such as nylon resin. What is necessary is that self-bonding is caused by heat treatment at a melting point or higher and a high melting point or lower. The melting point difference of this composite fiber is preferably 10 ° C. or higher, and more preferably 20 ° C. or higher because it is easy to process.

【００１５】 本発明の熱接着性繊維でない４０重量％
未満の他の繊維は、熱処理を行っても自己結合しない繊
維であり、ポリエステル繊維のような熱可塑性樹脂繊維
であってもよく、綿、麻など熱可塑でない繊維であって
もよい。本発明のドレイン材は、中空ドレイン材であ
り、その肉厚（Ｔ）は、内径（Ｉｄ）との関係Ｔ／Ｉｄ
において次の関係を必須とする。（単位ｍｍ） ０．１５≦Ｔ／Ｉｄ≦０．６０ 肉厚（Ｔ）が薄くＴ／Ｉｄが０．１５未満では、耐圧性
が不足し、土圧破損し、打ち込み強度も不十分である。
逆に肉厚（Ｔ）が厚すぎＴ／Ｉｄが０．６０を越えると
集排水性が悪い。このため好ましくは、０．２０≦Ｔ／
Ｉｄ≦０．５０である。また、ドレイン材の外径は、通
水量と扱いのよさから通例５０〜３００ｍｍの範囲のも
のが多いが、本発明は工事に使用されるものであれば、
その範囲を越えるものであっても良い。本発明のドレイ
ン材は、圧縮強度３０Ｋｇ／１０ｃｍ以上が好ましく、
より好ましくは５０〜２００Ｋｇ／１０ｃｍであると集
排水効果が大きく、軽く、耐圧性に優れ、目詰まりが起
こりにくく、生産性の優れたドレイン材となる。40% by weight not the thermoadhesive fiber of the invention
The other fibers below are fibers that do not self-bond even when subjected to heat treatment, and may be thermoplastic resin fibers such as polyester fibers or non-thermoplastic fibers such as cotton and hemp. The drain material of the present invention is a hollow drain material, and its wall thickness (T) has a relationship with the inner diameter (Id) T / Id.
The following relationships are mandatory in. (Unit: mm) 0.15 ≦ T / Id ≦ 0.60 When the wall thickness (T) is thin and T / Id is less than 0.15, pressure resistance is insufficient, earth pressure is damaged, and driving strength is insufficient. .
On the contrary, if the wall thickness (T) is too thick and T / Id exceeds 0.60, the drainage and drainage property is poor. Therefore, preferably 0.20 ≦ T /
Id ≦ 0.50. In addition, the outer diameter of the drain material is usually in the range of 50 to 300 mm because of the water flow rate and the ease of handling, but the present invention is not limited as long as it is used for construction.
It may exceed the range. The drain material of the present invention preferably has a compressive strength of 30 kg / 10 cm or more,
More preferably, when it is 50 to 200 kg / 10 cm, the drainage material has a large effect of collecting and draining, is light, has excellent pressure resistance, is unlikely to cause clogging, and has excellent productivity.

【００１６】 本第２の発明のドレイン材の製造方法
は、熱接着性繊維を少なくとも６０重量％以上含む繊維
を目付１０〜７０ｇ／ｍ２巾２ｍ以上の繊維ウエッブお
よび不織布とし、この繊維ウエッブおよび不織布を熱処
理し中芯に所定の外径になるまで巻き上げ、その後冷却
固化し、その後中芯を取り除く方法である。本発明の繊
維ウエッブは、熱接着性繊維を含む繊維を目付１０〜７
０ｇ／ｍ２巾２ｍ以上になるようカードその他の開繊機
により得たウエッブ、スパンボンド法ウェブ、メルトブ
ロー法ウェブなどである。また不織布は、サーマルボン
ド法、バインダー接着法、およびニードルパンチなどに
よる機械的絡合による乾式不織布あるいは抄紙による湿
式不織布などいずれの不織布を使用できる。In the method for producing a drain material according to the second aspect of the present invention, a fiber web and a nonwoven fabric having a basis weight of 10 to 70 g / m 2 and a width of 2 m or more are prepared by using a fiber containing at least 60% by weight of a heat-bondable fiber. This is a method in which a nonwoven fabric is heat-treated, wound up on a core to a predetermined outer diameter, then cooled and solidified, and then the core is removed. The fiber web of the present invention has a basis weight of 10 to 7 fibers including heat-bondable fibers.
The web, spunbond web, meltblown web, etc. obtained by a card opening machine such as a card having a width of 0 g / m 2 and a width of 2 m or more. As the non-woven fabric, any of non-woven fabrics such as a thermal bonding method, a binder bonding method, a dry non-woven fabric by mechanical entanglement by needle punching, or a wet non-woven fabric by paper making can be used.

【００１７】 次に上記特定されたウエッブおよび不織
布を熱処理する。このウエッブおよび不織布の熱接着性
繊維を溶融し、他の繊維を溶融しない温度で熱処理す
る。また低融点成分と高融点成分を組み合わせた複合熱
接着性繊維であっては、低融点成分が溶融し高融点成分
が溶融しない温度で熱処理することが一般的である。他
の繊維、例えばポリエステルの融点以上の温度であって
も短時間であれば融点以上の温度で熱処理してもよく、
また複合熱接着性繊維の高融点成分の融点以上の温度で
あっても短時間であれば融点以上の温度で熱処理しても
よい。これにより、熱接着性繊維は、溶融しこの溶融分
が接する繊維と融着し、溶融しない他の繊維、複合繊維
の高融点成分が繊維形状を残し、繊維集合体の嵩高を保
つ。本発明の目的から、加熱媒体、加熱媒体温度、加熱
時間、加熱媒体風速が選ばれ、熱接着性繊維の融点以
上、他の繊維の融点以下の温度に加熱した空気、蒸気
を、繊維ウエッブおよび不織布にあて、低融点成分を溶
融し、接する繊維と融着することができる。また繊維形
状を変形しない短時間であれば、熱接着性繊維の融点以
上の温度であってもよい。このため、より好ましくは風
速０．２〜５ｍ／ｓｅｃ、加熱時間１〜６０ｓｅｅ、低
融点成分融点の２℃以上５０℃以下の温度の熱風で熱処
理加工する。Next, the above-specified web and nonwoven fabric are heat-treated. The heat-adhesive fibers of the web and the nonwoven fabric are melted and heat-treated at a temperature that does not melt other fibers. Further, in the case of the composite thermo-adhesive fiber in which the low melting point component and the high melting point component are combined, it is common to heat-treat at a temperature at which the low melting point component does not melt but the high melting point component does not melt. Other fibers, for example, may be heat-treated at a temperature above the melting point for a short time even at a temperature above the melting point of polyester,
Further, even if the temperature is higher than the melting point of the high melting point component of the composite thermo-adhesive fiber, it may be heat treated at a temperature higher than the melting point for a short time. As a result, the heat-adhesive fibers are melted and fused with the fibers in contact with the melted components, and the other fibers that are not melted and the high-melting point component of the composite fiber leave a fiber shape, and the bulkiness of the fiber assembly is maintained. For the purpose of the present invention, heating medium, heating medium temperature, heating time, heating medium wind speed is selected, the air heated above the melting point of the heat-adhesive fiber, the melting point of other fibers, steam, the fiber web and The low melting point component can be melted and applied to the non-woven fabric to be fused with the fibers in contact therewith. The temperature may be higher than the melting point of the heat-adhesive fiber as long as it does not deform the fiber shape. Therefore, more preferably, the heat treatment is performed with hot air having a wind speed of 0.2 to 5 m / sec, a heating time of 1 to 60 seed, and a low melting point component melting point of 2 ° C. or more and 50 ° C. or less.

【００１８】 この熱処理方法は、一般にサーマルボン
デイング不織布に用いられる熱風循環式あるいは熱風吸
引型あるいは遠赤外線照射式などで熱接着性繊維成分の
融点以上の温度に上がるものであればいずれでも使用で
きる。中でも１〜１００ｓｅｃ、低融点成分融点の２℃
以上５０℃以下の温度の熱風で加工することが好まし
い。中芯に巻き付ける繊維ウエッブおよび不織布の目付
けは、１０〜７０ｇ／ｍ２であり、１０ｇ／ｍ２未満で
あると所定の肉厚に巻き上げるに時間が掛かりすぎ、開
繊機によってはきれいにウエッブまたは不織布がとれな
い。また７０ｇ／ｍ２を越えると充分にウエッブ全体ま
たは不織布に熱がいきわたるには時間が掛かり過ぎた
り、あるいは熱接着が均一にならず充分な接着強力が得
にくい。As this heat treatment method, any hot air circulation type, hot air suction type, far infrared ray irradiation type or the like which is generally used for thermal bonding nonwoven fabrics can be used as long as the temperature is higher than the melting point of the heat adhesive fiber component. Among them, 1 to 100 sec, low melting point component melting point of 2 ° C.
It is preferable to process with hot air having a temperature of not lower than 50 ° C. Fibrous web and nonwoven having a basis weight of winding the corrugated medium is 10~70g / m 2, is less than 10 g / m 2 too much time to wind up a predetermined thickness, elegantly web or nonwoven fabric by opening machine Can not be removes. On the other hand, if it exceeds 70 g / m 2 , it takes too much time for the heat to spread to the entire web or the nonwoven fabric, or the heat bonding is not uniform and it is difficult to obtain sufficient bonding strength.

【００１９】 中芯に巻き付ける繊維ウエッブおよび不
織布の巾は、一般には２ｍ以上であり、２ｍ未満である
と本発明ドレイン材の用途、土木、建築、農業や園芸分
野で用いるには繋ぎカ所が多くなり作業工数が多くなり
実用的ではない。好ましくは、３〜１０ｍが望ましく、
長尺標準の４ｍものを製造しやすいものがよい。中芯
は、通例は円筒状であり、その内径と外径は下記不等式
の条件に合う範囲で状況に応じて設定しなければならな
い。又、四角形、三角形であってもその内接円と外接円
を想定すれば同様に考えられる。The width of the fibrous web and the non-woven fabric wound around the core is generally 2 m or more. If the width is less than 2 m, there are many connecting points for use of the drain material of the present invention, civil engineering, construction, agriculture and horticultural fields. It is not practical because it requires a lot of man-hours. Preferably, 3 to 10 m is desirable,
It is preferable that it is easy to manufacture the long standard 4m. The center core is usually cylindrical, and its inner diameter and outer diameter must be set according to the situation within the range satisfying the conditions of the following inequality. Further, even if it is a quadrangle or a triangle, the same can be considered if the inscribed circle and the circumscribed circle are assumed.

【００２０】 次に、繊維ウエッブおよび不織布は、線
圧３０〜５００ｇ／ｃｍに調節して巻き上げる。この線
圧の調整方法は、中芯となるパイプ、棒の自重でもよ
く、パイプ、棒の両端をエアーシリンダーなどで調節し
たものでもよい。パイプ、棒の両端をエアーシリンダー
などで調節すると、ドレイン材の肉厚の空隙率を任意に
調節できた。Next, the fibrous web and the non-woven fabric are wound by adjusting the linear pressure to 30 to 500 g / cm. This linear pressure may be adjusted by the weight of the core pipe or rod, or by adjusting both ends of the pipe or rod with air cylinders or the like. By adjusting both ends of the pipe and rod with air cylinders, etc., the porosity of the thickness of the drain material could be adjusted arbitrarily.

【００２１】 繊維ウエッブおよび不織布の巻き上げ圧
を数段回に変更し、中芯部分の巻き上げ圧を高く、外周
部を低くエアーシリンダーなどで調節し、ドレイン材の
肉厚の空隙率を任意に調節したものは、また空隙率、繊
度の異なるウエッブまたは不織布に途中から変更するこ
とで中芯部、外周部の空隙率、ろ過精度を替えることも
でき、中芯部を密に、外周部を粗くすることで、長時間
にわたり目詰まりすることなく使用できた。The winding pressure of the fibrous web and the non-woven fabric is changed to several stages, the winding pressure of the core is increased and the outer periphery is adjusted low with an air cylinder, etc., and the porosity of the wall thickness of the drain material is arbitrarily adjusted. In addition, by changing to a web or nonwoven fabric with different porosity and fineness from the middle, it is possible to change the porosity and filtration accuracy of the core part and the outer peripheral part, making the core part dense and the outer peripheral part rough. By doing so, it could be used for a long time without clogging.

【実施例】【Example】

【００２２】 以下本発明を実施例で更に詳細に説明
する。尚、各例の評価は、以下の方法で行った。 （繊維成分） ＨＤＰＥ：融点１３２℃の高密度ポリエチレン ＰＰ ：融点１６５℃のポリプロピレン ＬＰＥＴ：融点１３０℃のポリエステル ＰＥＴ ：融点２５４℃のポリエステル （空隙率） （生産性）ドレーン材を製造し、均一に容易に製造でき
るものを○、そうでないものを×とした。 （耐圧試験）直径１５ｃｍの２枚の円盤の間に長さ１０
ｃｍドレイン材を横置きし、１０ｍｍ／ｍｉｎの速度で
圧縮し、その降伏点強度を求め耐圧試験とした。（単位
Ｋｇ／１０ｃｍ） （目詰まり）ドレイン材を軟弱地盤に打ち込んで使用し ◎：３年以上排水量が変化しなかった。 ○：１年以上排水量が変化しなかった。 ×：１カ月から排水量が低下した。 （通水量）図１に示したドレイン材の通水量試験装置で
測定した。ドレイン材を１ｍに切断し、給水水槽側パイ
プと排水水槽側パイプの間にこのドレイン材を取付け、
ドレイン材外周面を熱収縮フイルムで覆った。あらかじ
めドレイン材内の気泡を取り除くため給水・排水水槽間
の水頭差Ｈを５ｍｍの状態で３０分通水し、その後水頭
差Ｈ３０ｍｍの状態で安定してから６０秒当たりの通水
量を３回連続測定しその平均を求め外径断面積当たりの
通水量とした。断面積［（外径／２）２π］あたり６０
秒あたりの通水量（単位ｃｃ／ｃｍ２） （評価）以上、生産性、耐圧試験、目詰まり試験、通水
量の評価を総合的に判断し、問題のあるものを×とし、
そうでないものを○とした。なお、それぞれの実施例、
比較例における熱処理温度は、熱電対を用いた非接触温
度計で測定した。Hereinafter, the present invention will be described in more detail with reference to Examples. The evaluation of each example was performed by the following method. (Fiber component) HDPE: high-density polyethylene having a melting point of 132 ° C. PP: polypropylene having a melting point of 165 ° C. LPET: polyester having a melting point of 130 ° C. PET: polyester having a melting point of 254 ° C. (porosity) (Productivity) A drain material was manufactured and was easily manufactured uniformly. (Pressure resistance test) Length 10 between two disks with a diameter of 15 cm
The cm drain material was placed horizontally, compressed at a speed of 10 mm / min, and the yield strength was determined to be a pressure resistance test. (Unit: Kg / 10 cm) (Clogging) Drain material was driven into soft ground for use ◎: The amount of discharged water did not change for 3 years or more. ○: The amount of discharged water did not change for one year or more. X: The amount of discharged water decreased from one month. (Water flow rate) The water flow rate was measured by the water flow rate test apparatus for the drain material shown in FIG. Cut the drain material to 1 m and attach this drain material between the water supply tank side pipe and the drainage water tank side pipe,
The outer peripheral surface of the drain material was covered with a heat shrink film. In order to remove air bubbles in the drain material in advance, water is passed for 30 minutes with the water head difference H between the water supply and drainage water tanks of 5 mm, and after that, the water head difference H becomes stable at the water head difference H of 30 mm, and then the water flow rate per 60 seconds is repeated three times. The measurement was performed and the average thereof was calculated and used as the water flow rate per outer diameter cross-sectional area. 60 per cross-sectional area [(outer diameter / 2) 2 π]
Water flow per second (unit: cc / cm 2 ) (evaluation) Totally judging the productivity, pressure resistance test, clogging test and water flow evaluation, and mark the problem as x,
Those that were not were rated as ○. In addition, each example,
The heat treatment temperature in the comparative example was measured by a non-contact thermometer using a thermocouple.

【００２３】実施例１〜３ 実施例１．鞘側低融点成分、芯側高融点成分として、そ
れぞれ、表１に示したポリマーを用い、孔径０．６ｍ
ｍ、孔数３５０個の鞘芯型複合口金を用いて、鞘芯型熱
接着性繊維の未延伸糸を紡糸した。この鞘芯型熱接着性
繊維の未延伸糸をロール延伸装置を用いて１００℃に加
熱しながら４倍延伸し、クリンパーでクリンパー数１２
山／２５ｍｍの捲縮を付与した後に、カッターで切断し
て単糸繊度３２ｄ／ｆ、カット長６４ｍｍの鞘芯型複合
熱接着性繊維を得た。得られたステープルファイバーを
カード機にて巾４．２ｍ、目付け２０ｇ／ｍ２のウェブ
とした後、サクションドライヤー（風速１．５ｍ／ｓｅ
ｃ、加工時間１５秒、ネットコンベアー速度１０ｍ／ｍ
ｉｎ）にて熱処理加工した。得られた低融点成分が溶融
した状態のウェブを外径３０ｍｍ、４０ｇ／ｃｍのステ
ンレス製中芯に自重で加圧しながら巻取った。室温のブ
ロア−風で冷却した後、長さ４ｍに切断し、内径３０、
外径５０ｍｍのドレイン材とした。このドレイン材は容
易に製造でき、丈夫で、外観の均一のものであった。こ
のドレイン材の評価を表１に示した。 実施例２．および３は、表１記載の成分、製法などを実
施例１に準じ製造し、このドレイン材の評価を表１に示
した。なお線圧は、中芯をエアーシリンダーを持ちい表
１のように設定した。又内径、外径も表１のようにし
た。 実施例４〜６、実施例４は、並列タイプの低融点ＰＥＴ
（ＬＰＥＴ）／ＰＥＴの複合繊維クリンプ数１３山／２
５ｍｍ繊維長６４ｍｍ、他繊維として６５ｄ／ｆＲｅｇ
ＰＰ（クリンプ数１２山／２５ｍｍ繊維長８９ｍｍ）を
３５重量％加え実施例１に準じた。実施例５では複合繊
維を用いず、６ｄ／ｆＲｅｇＰＰ（クリンプ数１２山／
２５ｍｍ繊維長６４ｍｍ）７０重量％と１５ｄ／ｆＲｅ
ｇＰＥＴ（クリンプ数１４山／２５ｍｍ繊維長６４ｍ
ｍ）３０重量％の混紡を用い、実施例１に準じ、このド
レイン材の評価を表１に示した。実施例６は、鞘芯タイ
プの実施例１に準じたＨＤＰＥ／ＰＰの複合繊維１００
％の熱接着性繊維による不織布を巻き付けドレイン材と
した。実施例７では、初め実施例１と同様な熱接着性複
合繊維をステンレス製中芯に巻き付け空隙率７５％肉厚
１６ｍｍとした。この後空隙率８８％肉厚１６ｍｍの二
層目構造とした以外は、実施例１に準し、このドレイン
材の評価を表１に示した。なお線圧は内層が６０ｇ／ｃ
ｍ、外層が３７ｇ／ｃｍで行った。ドレイン材として使
用するには、耐圧強度で３０Ｋｇ／１０ｃｍ以上必要で
あるが、本発明のドレイン材は耐圧強度で５０Ｋｇ／１
０ｃｍ以上あり強かった。またたドレイン材として使用
するには、排水量３００ｃｃ／ｃｍ２以上必要である
が、本発明のドレイン材は排水量４００ｃｃ／ｃｍ２以
上通水できた。 比較例１〜３ 比較例１は、従来の製造方法で、表１の成分、外径２０
ｍｍの中芯のある内径６０ｍｍ長さ４０ｃｍの中空管に
１８ｄ／ｆの実施例１に準じた熱接着性複合繊維を１５
ｍｍΦの丸棒で充填し、１４０℃の熱風循環器に１０分
熱処理した。この従来法の生産性は、中空管に詰める作
業など簡単ではなかった。このドレイン材の外観は、不
均一形状であり、断面を切断すると表面のみ融着し、芯
側は融着していない繊維があった。他の評価を表１に示
す。比較例２，３は、表１に示された肉厚の厚いもの、
薄いもの以外は実施例１に準じ、評価を表１に示す。Examples 1 to 3 Example 1. As the sheath-side low melting point component and the core-side high melting point component, the polymers shown in Table 1 were used, and the pore diameter was 0.6 m.
An undrawn yarn of the sheath-core type heat-bondable fiber was spun using a sheath-core type composite spinneret having m and 350 holes. The unstretched yarn of the sheath-core type thermoadhesive fiber was stretched 4 times while being heated to 100 ° C. using a roll stretching device, and a crimper number was 12 with a crimper.
After applying crimps of 25 cm in height / pile, they were cut by a cutter to obtain a sheath-core type composite heat-bondable fiber having a single yarn fineness of 32 d / f and a cut length of 64 mm. The obtained staple fiber was made into a web having a width of 4.2 m and a basis weight of 20 g / m 2 by a card machine, and then a suction dryer (wind speed 1.5 m / se).
c, processing time 15 seconds, net conveyor speed 10 m / m
in). The obtained web in which the low melting point component was melted was wound around a stainless steel core having an outer diameter of 30 mm and 40 g / cm while applying pressure under its own weight. After cooling with a blower at room temperature, cut into a length of 4 m, an inner diameter of 30,
The drain material had an outer diameter of 50 mm. This drain material was easy to manufacture, durable and of uniform appearance. The evaluation of this drain material is shown in Table 1. Example 2. For Nos. 3 and 3, the components and manufacturing method shown in Table 1 were manufactured according to Example 1, and the evaluation of this drain material is shown in Table 1. The linear pressure was set as shown in Table 1 with an air cylinder as the center core. The inner diameter and outer diameter are also as shown in Table 1. Examples 4 to 6 and Example 4 are parallel type low melting point PET.
(LPET) / PET composite fiber crimp number 13 threads / 2
5mm fiber length 64mm, other fiber 65d / fReg
35% by weight of PP (crimp number 12 peaks / 25 mm fiber length 89 mm) was added and the same as in Example 1. In Example 5, 6d / fRegPP (12 crimps /
25 mm fiber length 64 mm) 70% by weight and 15 d / fRe
gPET (crimp number 14 threads / 25mm fiber length 64m
m) Using a 30% by weight blended fabric, and in accordance with Example 1, the evaluation of this drain material is shown in Table 1. Example 6 is a sheath-core type HDPE / PP composite fiber 100 according to Example 1.
A non-woven fabric composed of 10% of heat-bondable fibers was wound to form a drain material. In Example 7, first, the same heat-bondable composite fiber as in Example 1 was wrapped around a stainless steel core to have a porosity of 75% and a wall thickness of 16 mm. After that, except for the second layer structure having a porosity of 88% and a wall thickness of 16 mm, the evaluation of this drain material is shown in Table 1 according to Example 1. The line pressure is 60g / c for the inner layer.
m, the outer layer was 37 g / cm. In order to use it as a drain material, it is necessary to have a pressure resistance of 30 kg / 10 cm or more, but the drain material of the present invention has a pressure strength of 50 kg / 1.
It was more than 0 cm and was strong. Further, the drainage amount of 300 cc / cm 2 or more is required for use as the drain material, but the drainage material of the present invention was able to pass the drainage amount of 400 cc / cm 2 or more. Comparative Examples 1 to 3 Comparative Example 1 is a conventional manufacturing method, in which the components shown in Table 1 and the outer diameter 20 are used.
Into a hollow tube having an inner diameter of 60 mm and an inner diameter of 60 mm and a length of 40 cm, 15 d of the thermoadhesive conjugate fiber according to Example 1 of 18 d / f was used.
It was filled with a round bar of mmΦ and heat-treated in a hot air circulator at 140 ° C. for 10 minutes. The productivity of this conventional method is not easy, such as filling a hollow tube. The appearance of this drain material was inhomogeneous, and when the cross section was cut, only the surface was fused and some fibers were not fused on the core side. Other evaluations are shown in Table 1. Comparative Examples 2 and 3 have thick wall thicknesses shown in Table 1,
Evaluations are shown in Table 1 according to Example 1 except for the thin one.

【００２４】[0024]

【発明の効果】 本発明のドレイン材は、全て繊維で
出来、熱接着性繊維によってその接点が全てが自己結合
されているので、集水性は抜群でかつ目詰まりもなかっ
た。本発明のドレイン材は、特定された空隙率、肉厚で
あるため、通水量も落ちる事なく大きな排水量が得ら
れ、ドレイン材として最適のものであった。EFFECTS OF THE INVENTION Since the drain material of the present invention is made entirely of fibers and all its contacts are self-bonded by the heat-adhesive fibers, the water collection is excellent and there is no clogging. Since the drain material of the present invention has the specified porosity and wall thickness, a large amount of drainage can be obtained without reducing the amount of water flow, and it was the most suitable drain material.

【００２５】 従来の中芯のある金型に充填する製法と
異なり、本発明のドレイン材は中芯に特定されたウエッ
ブを特定肉厚になるよう巻き上げ、冷却固化し、中芯を
取り除く簡単な製造で得ることができた。本発明のドレ
イン材は、巾広ウエッブを巻き上げ製造することもで
き、土木、建築、農業園芸の集排水工事用の標準サイズ
である４ｍものを得ることも簡単であった。従来の中芯
のある金型に繊維束を押し込み充填するため成形したド
レイン材は、不均一充填となり断面折れしやすく、軸方
向に繊維を並べた従来の製法では、縦方向に裂け易く、
土圧によって破損し易い。この従来法と異なり本発明の
ドレイン材は、中芯に特定されたウエッブを特定肉厚に
なるよう特定圧力で巻き上げ、冷却固化し、中芯を取り
除いて製造したので、均一な強度、均一な肉厚、任意の
空隙率のドレイン材の製造は、容易であった。また 本
発明のドレイン材は、えん堤、道路、ダム、排水路、鉄
道、トンネル、埋め立て地、等の排水用として、これら
の地盤に垂直に打ち込み、または平行に敷設して用いら
れる。 そのほか軟弱地盤の改良、泥土からの水の吸い
出し等の広範囲の用途に用いられる。Unlike the conventional method of filling a mold with a core, the drain material of the present invention is a simple method of winding the web specified as the core to a specific thickness, solidifying by cooling, and removing the core. It could be obtained by manufacturing. The drain material of the present invention could be manufactured by rolling up a wide web, and it was easy to obtain a standard size of 4 m for collecting and draining construction of civil engineering, construction, agriculture and horticulture. The drain material molded to press and fill the fiber bundle into the conventional mold with a core is non-uniformly filled, and the cross-section is easily broken.In the conventional manufacturing method in which the fibers are arranged in the axial direction, it is easy to tear in the longitudinal direction,
It is easily damaged by earth pressure. Unlike this conventional method, the drain material of the present invention is manufactured by winding up the web specified as the core with a specific pressure so as to have a specific thickness, cooling and solidifying, and removing the core, so that the uniform strength and uniform It was easy to manufacture a drain material having a wall thickness and an arbitrary porosity. Further, the drain material of the present invention is used for drainage of levees, roads, dams, drainage channels, railways, tunnels, landfills, etc. by vertically driving or laying parallel to these grounds. In addition, it is used for a wide range of applications such as improving soft ground and sucking water from mud.

【００２６】[0026]

【表１】[Table 1]

【図面の簡単な説明】[Brief description of drawings]

【図１】 ドレイン材通水試験装置の側面概略説明図FIG. 1 is a schematic side view of a drain material water flow test device.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 繊度１〜１０００ｄ／ｆの熱接着性繊
維を少なくとも６０重量％以上含む繊維で構成され、そ
の熱接着性繊維の熱融着により自己結合され空隙率６０
〜９０％の中空ドレイン材で、かつその肉厚（Ｔ）が内
径（Ｉｄ）との関係Ｔ／Ｉｄにおいて次の関係を特徴と
するドレイン材。 ０．１５≦Ｔ／Ｉｄ≦０．６０1. A fiber comprising at least 60% by weight or more of a thermoadhesive fiber having a fineness of 1 to 1000 d / f, self-bonded by heat fusion of the thermoadhesive fiber, and a porosity of 60.
A drain material having a hollow drain material of ˜90% and having a wall thickness (T) and an inner diameter (Id) in the following relationship in T / Id. 0.15 ≦ T / Id ≦ 0.60 【請求項２】 熱接着性繊維を含む繊維を目付１０〜
７０ｇ／ｍ2 巾２ｍ以上の繊維ウエッブおよび不織布と
し、この繊維ウエッブおよび不織布を熱処理し中芯に線
圧３０〜５００ｇ／ｃｍに調節して所定の外径になるま
で巻き上げ、その後冷却固化し、その後中芯を取り除く
請求項１のドレイン材の製造方法。2. A fiber containing a heat-adhesive fiber is weighted 10 to
70 g / m 2 A fiber web and a non-woven fabric having a width of 2 m or more are heat-treated, and the fiber web and the non-woven fabric are heat-treated to adjust the linear pressure to 30 to 500 g / cm and wound up to a predetermined outer diameter, and then cooled and solidified, The method for producing a drain material according to claim 1, wherein the core is removed thereafter.
JP34972992A 1992-12-02 1992-12-02 Drain material and method of manufacturing the same Expired - Fee Related JP3271808B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP34972992A JP3271808B2 (en) 1992-12-02 1992-12-02 Drain material and method of manufacturing the same
CN93121708A CN1071829C (en) 1992-12-02 1993-12-01 A drain material and a process for producing the same
KR1019930026197A KR100328371B1 (en) 1992-12-02 1993-12-02 Hollow drained material and manufacturing method thereof
TW082110243A TW289056B (en) 1992-12-02 1993-12-04 A hollow drain material and a process for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34972992A JP3271808B2 (en) 1992-12-02 1992-12-02 Drain material and method of manufacturing the same

Publications (2)

Publication Number Publication Date
JPH0748826A true JPH0748826A (en) 1995-02-21
JP3271808B2 JP3271808B2 (en) 2002-04-08

Family

ID=18405711

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34972992A Expired - Fee Related JP3271808B2 (en) 1992-12-02 1992-12-02 Drain material and method of manufacturing the same

Country Status (4)

Country Link
JP (1) JP3271808B2 (en)
KR (1) KR100328371B1 (en)
CN (1) CN1071829C (en)
TW (1) TW289056B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6342920B2 (en) 1996-02-27 2002-01-29 Canon Kabushiki Kaisha Photoelectric conversion device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542210A (en) * 1978-09-12 1980-03-25 Koichi Ogawa Special activated carbon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6342920B2 (en) 1996-02-27 2002-01-29 Canon Kabushiki Kaisha Photoelectric conversion device

Also Published As

Publication number Publication date
CN1113280A (en) 1995-12-13
KR940015107A (en) 1994-07-20
KR100328371B1 (en) 2002-06-20
JP3271808B2 (en) 2002-04-08
TW289056B (en) 1996-10-21
CN1071829C (en) 2001-09-26

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