JPH0874223A - Water-barrier sheet - Google Patents
Water-barrier sheetInfo
- Publication number
- JPH0874223A JPH0874223A JP6245791A JP24579194A JPH0874223A JP H0874223 A JPH0874223 A JP H0874223A JP 6245791 A JP6245791 A JP 6245791A JP 24579194 A JP24579194 A JP 24579194A JP H0874223 A JPH0874223 A JP H0874223A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- water
- absorbent
- regenerated
- quilted
- 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
- Laminated Bodies (AREA)
- Revetment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、水路のライニングや
池の内張り、特に産業廃棄物を埋設する産業廃棄物埋設
穴（以下埋設穴という）の内張りの遮水に好適なシート
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet suitable for water lining of a waterway or lining of a pond, especially for lining an industrial waste burying hole (hereinafter referred to as burial hole) for burying industrial waste.
【０００２】[0002]
【従来の技術】産業廃棄物を埋設した埋設穴から産業廃
棄物で汚染された水が漏れて土壌中に浸透すると、流水
や地下水が汚染されて自然環境を破壊する怖れがある。
そのために従来は、厚さ１０ｍｍ幅２ｍ程度のポリエス
テルのフエルトの周囲の縁を互いに重ね合わせて埋設穴
の底面と側壁面に敷き、敷き詰めたフエルトの上に厚さ
１０ｍｍ程度の厚いゴムを敷き、ゴムの接合部を互いに
接着して埋設穴の内張りをしていた。2. Description of the Related Art If water contaminated with industrial waste leaks from a burial hole in which industrial waste is buried and penetrates into the soil, running water or groundwater may be contaminated and the natural environment may be destroyed.
Therefore, conventionally, the peripheral edges of a polyester felt having a thickness of 10 mm and a width of about 2 m are overlapped with each other and laid on the bottom surface and the side wall of the buried hole, and a thick rubber having a thickness of about 10 mm is laid on the felt. The rubber joints were glued together to line the buried holes.
【０００３】[0003]
【発明が解決しようとする課題】ゴムの接着は容易に且
つ確実に行なうことができるので、ゴムの接合部から廃
棄物で汚染された水が漏れる怖れはないが、埋設穴に投
下する産業廃棄物は、形状も重量も各種雑多であるから
大重量の廃棄物の鋭利な先端部や角部がゴムに衝突して
ゴムを損傷し、ゴムが破れたり孔があくことがある。ポ
リエステルのフエルトは遮水することができないので、
ゴムが破れたり孔があくと廃棄物で汚染された水が土壌
中に浸透して行き、自然環境を破壊する。更に、ポリエ
ステルのフエルトは高価（１ｍ２当たり約１０００円）
である上に、埋設穴にフエルトの周囲の縁を重ね合わせ
て敷き詰める作業は手間がかかり厄介であるから埋設穴
を造る工事費が嵩むという問題があった。Since the rubber can be easily and surely bonded, there is no fear that the water contaminated with the waste will leak out from the joint of the rubber, but the industry where the water is dropped into the buried hole. Since the wastes have various shapes and weights, sharp tips and corners of the heavy wastes may collide with the rubber to damage the rubber, and the rubber may be broken or have holes. Polyester felt cannot block water,
When rubber is torn or punctured, waste-contaminated water penetrates into the soil and destroys the natural environment. Furthermore, polyester felt is expensive (about 1000 yen per 1 m 2 ).
In addition, it is troublesome and troublesome to lay the peripheral edge of the felt on the buried hole so that the construction cost of the buried hole increases.
【０００４】この発明は、斯かる従来の埋設穴造成の問
題点を解消するものであって、埋設穴に内張りしたゴム
から漏れた汚染された水を遮水シート内にゲル状に膨潤
して貯留して汚染水の土壌中への浸透を完全に防止する
と共に安価な遮水シートを提供することを目的とする。The present invention solves the above-mentioned problems of the conventional buried hole construction, in which contaminated water leaked from the rubber lined in the buried hole is swollen into the water impermeable sheet as a gel. It is an object of the present invention to provide an inexpensive waterproof sheet while completely preventing the contaminated water from being stored and permeating into the soil.
【０００５】[0005]
【課題を解決するための手段】この発明の遮水シート
は、ゲル化物質の吸水膨潤性ポリマーシートの上下に吸
水性シートを重ね合わせてキルテイング加工し、キルテ
イングされた前記吸水性シートの下面に遮水性シートを
ラミネートして一体のシートにしたことを特徴とする。The water-impermeable sheet of the present invention comprises a water-absorbent and swelling polymer sheet of a gelled substance and a water-absorbent sheet which are laid on top and bottom of the polymer sheet and quilted to form a bottom surface of the quilted water-absorbent sheet. It is characterized in that a water-blocking sheet is laminated to form an integrated sheet.
【０００６】[0006]
【作用】第１層（上層）の吸水性シートから吸収された
水は、第２層の吸水膨潤性ポリマーシートと第３層の吸
水シートにも吸収されて貯留される。ポリマーシートは
水を吸収するとゲル状に膨潤して５００〜８００倍の水
を吸収して保持することができるので多量の水が貯留さ
れる。そしてこれらのシートはキルテイングされている
ので吸水した膨潤ゲルが遮水シート内を移動しない。ポ
リマーシートの上下に目付量（単位面積当たりの重量）
の大きい再生吸水シートを使用すると、再生吸水シート
は単位面積当たりの重いシートであるからゴムを介して
強い衝撃を受けてもシートに孔があくことがないので吸
収した水は確実に保持される。第３層（下層）の吸水シ
ートの下面に遮水性シートがラミネートされているので
あるから吸水シートに吸収された水が遮水シートから漏
出しない。The water absorbed from the water absorbing sheet of the first layer (upper layer) is also absorbed and stored in the water absorbing and swelling polymer sheet of the second layer and the water absorbing sheet of the third layer. When the polymer sheet absorbs water, it swells like a gel and can absorb and retain 500 to 800 times as much water, so that a large amount of water is stored. Since these sheets are quilted, the swollen gel that has absorbed water does not move inside the water-blocking sheet. Area weight above and below the polymer sheet (weight per unit area)
When a regenerated water absorbent sheet with a large size is used, since the regenerated water absorbent sheet is a heavy sheet per unit area, the sheet will not be punctured even if it is subjected to a strong impact through rubber, so the absorbed water is reliably retained. . Since the water blocking sheet is laminated on the lower surface of the third layer (lower layer) of the water absorbing sheet, the water absorbed by the water absorbing sheet does not leak from the water blocking sheet.
【０００７】[0007]
【実施例】先ず図１、図２の５層の遮水シート１０の実
施例について説明する。図１、図２において、第１層の
吸水性シート１は、目付量３０ｇ／ｍ２のポリプロピレ
ンの不織布である。吸水性シート１としては、ナイロン
やポリエステルの不織布を使用しても良いが、これらの
不織布は高価なので実用上はポリプロピレン不織布が好
ましい。EXAMPLE First, an example of the five-layer waterproof sheet 10 shown in FIGS. 1 and 2 will be described. 1 and 2, the water absorbent sheet 1 of the first layer is a polypropylene nonwoven fabric having a basis weight of 30 g / m 2 . As the water-absorbent sheet 1, nylon or polyester non-woven fabric may be used, but since these non-woven fabrics are expensive, polypropylene non-woven fabric is preferable in practice.
【０００８】第２層の再生吸水シート２、第４層の再生
吸水シート４と第３層の吸水膨潤性ポリマーシート３
は、紙おむつ（実施例はプロクター＆ギャンブル社の紙
おむつ）の製造時における不良品や端材を再生したリサ
イクル品である。再生シートの製造の概要は次のとおり
である。紙おむつを粉砕機によって微粒子に粉砕した
後、その微粒子を上方へ吹き上げ、浮遊状態で降下する
状態と速さによって、パルプ、ポリエチレン、ポリプロ
ピレン、ウレタンの微粒子とポリマーの微粒子に仕分け
する。The second layer of recycled water absorbent sheet 2, the fourth layer of recycled water absorbent sheet 4 and the third layer of water absorbent swellable polymer sheet 3
Is a recycled product in which defective products and scraps at the time of manufacturing a disposable diaper (Example: disposable diaper manufactured by Procter & Gamble Co., Ltd.) are recycled. The outline of the production of recycled sheets is as follows. After the paper diaper is crushed into fine particles by a crusher, the fine particles are blown upward, and are classified into fine particles of pulp, polyethylene, polypropylene, urethane and fine particles of polymer according to the state and speed of falling in a floating state.
【０００９】パルプ、ポリエチレン、ポリプロピレン、
ウレタンの微粒子を水中に浮遊させて紙漉きと同様の方
法で漉いて厚さ約１〜１．５ｍｍの再生吸水シート２、
４を造る。再生吸水シート２、４は何れも目付量３００
ｇ／ｍ２のシートである。Pulp, polyethylene, polypropylene,
Recycled water-absorbent sheet 2 with a thickness of about 1-1.5 mm, made by suspending urethane fine particles in water and straining in the same way as a paper strainer.
Build 4. Reclaimed water-absorbing sheets 2 and 4 each have a basis weight of 300
It is a sheet of g / m 2 .
【００１０】薄い２枚のパルプの紙の間にポリマーの微
粒子を敷き詰めて、一対の加圧ロールで接着して厚さ１
ｍｍ程度のポリマーシート３を造る。この時一方の加圧
ロールの表面に細かいピッチ、例えば３ｍｍ間隔の格子
状の溝を設けて圧着すると接着が確実に行なわれて好ま
しい。ポリマーシート３の目付量は２００ｇ／ｍ２であ
る。Polymer particles are spread between two thin pieces of pulp paper, and they are adhered with a pair of pressure rolls to give a thickness of 1
A polymer sheet 3 having a size of about mm is produced. At this time, it is preferable that the surface of one of the pressure rolls is provided with a fine pitch, for example, lattice-like grooves having an interval of 3 mm and pressure bonding is performed so that the adhesion is surely performed. The basis weight of the polymer sheet 3 is 200 g / m 2 .
【００１１】前記の透水性シート１と再生吸水シート２
とポリマーシート３と再生吸水シート４とを重ね合わせ
て、キルテイングマシンによって縫着してキルテイング
６する。この実施例のキルテイング６は、５０ｍｍの間
隔でシートの長手方向に縫着されている。The above-mentioned water-permeable sheet 1 and recycled water-absorbing sheet 2
The polymer sheet 3 and the regenerated water absorbing sheet 4 are superposed on each other and sewn by a quilting machine to be quilted 6. The quilting 6 of this embodiment is sewn in the longitudinal direction of the sheet at intervals of 50 mm.
【００１２】第５層の遮水性シート５は、目付量４０ｇ
／ｍ２のポリプロピレン不織布に３０〜５０μ程度のポ
リエチレンシートをラミネートしたものである。遮水性
シート５は、３０〜５０μ程度のポリエチレンシートの
みでも良い。キルテイングされた第４層の再生吸水シー
ト４の下面を遮水性シート５にラミネートして遮水シー
ト１０にする。この遮水シート１０は、工場で幅１〜
１、２ｍ、長さ５０〜２００ｍ程度のシートに製造され
るので、大きな池や埋設穴の内張りに使用する場合には
多数の遮水シート１０を接合して大きなシートにする。The water blocking sheet 5 of the fifth layer has a basis weight of 40 g.
/ M 2 polypropylene nonwoven fabric laminated with a polyethylene sheet of about 30 to 50 μm. The water-blocking sheet 5 may be only a polyethylene sheet of about 30 to 50 μm. The lower surface of the quilted fourth layer regenerated water absorbent sheet 4 is laminated on the water impermeable sheet 5 to form the water impermeable sheet 10. This waterproof sheet 10 has a width of 1 to 1 at the factory.
Since it is manufactured into a sheet having a length of 1 to 2 m and a length of 50 to 200 m, when it is used for lining a large pond or a buried hole, a large number of water-impervious sheets 10 are joined together.
【００１３】工場では接合部をオーバーロックミシンで
縫い合わせた後、縫着部の遮水性シート５の表面（図１
の下面）に遮水テープを貼りつけて、水が漏れないよう
にしている。工場では運搬可能な大きさのシートにして
おり、通常２〜１０枚の遮水シート１０を工場で接合す
る。接合した遮水シートの外周を遮水性シート５で包ん
で、遮水性シートの端部５ａを吸水性シート１の上面に
接着する。縫着後の遮水テープの貼りつけは、遮水性シ
ートの端部５ａまで行なう。このように再生吸水シート
２、４とポリマーシート３が遮水性シート５に包まれて
いるので、水や水で膨潤したゲルが接合部の端面から漏
出しない。At the factory, after the joints are sewn together with an overlock sewing machine, the surface of the water-blocking sheet 5 at the sewn portion (see FIG. 1).
Water-blocking tape is attached to the bottom surface of the to prevent water from leaking. The size of the sheet is such that it can be transported at the factory, and usually 2 to 10 sheets of the waterproof sheet 10 are joined at the factory. The outer periphery of the bonded water-impermeable sheet is wrapped with the water-impermeable sheet 5, and the end portion 5a of the water-impermeable sheet is bonded to the upper surface of the water-absorbent sheet 1. The sticking of the water blocking tape after the sewing is performed up to the end 5a of the water blocking sheet. In this way, the regenerated water-absorbing sheets 2 and 4 and the polymer sheet 3 are wrapped in the water-blocking sheet 5, so that water or gel swollen with water does not leak from the end face of the joint.
【００１４】埋設穴や池の施工現場では、遮水シート１
０の端部を重ね合わせ、重ねた部分を両面接着テープで
接着する。接着シートの片面は遮水性シート５の表面
に、他面は吸水性シート１に接着されている遮水性シー
トの端面部５ａに接着するのであるから、接合部から水
が漏出することはない。施工現場における接合は両面接
着テープ接着するだけの簡単な作業であるから、手間が
かからず工期を短縮することができる。At the construction site of buried holes and ponds, water-blocking sheet 1
The end portions of 0 are overlapped and the overlapped portion is adhered with a double-sided adhesive tape. Since one surface of the adhesive sheet adheres to the surface of the water shield sheet 5 and the other surface adheres to the end surface portion 5a of the water shield sheet adhered to the water absorbent sheet 1, water does not leak from the joint portion. Since the joining at the construction site is a simple work of simply sticking the double-sided adhesive tape, it does not take time and the construction period can be shortened.
【００１５】図３は４層の遮水シート２０の実施例で、
第１層の再生吸水シート２、第２層の吸水膨潤性ポリマ
ーシート３と第３層の再生吸水シート４は何れも前記実
施例と同じものであり、これら３枚のシート２、３、４
がダイヤ柄のキルテイング８で縫着されている。ダイヤ
柄のキルテイング８にすると、ポリマーシート３に吸水
されて５００〜８００倍に膨潤した膨潤ゲルの移動を防
止できる。FIG. 3 shows an embodiment of a four-layer waterproof sheet 20.
The regenerated water absorbent sheet 2 of the first layer, the water absorbent swellable polymer sheet 3 of the second layer, and the regenerated water absorbent sheet 4 of the third layer are all the same as those in the above-mentioned embodiment, and these three sheets 2, 3, 4 are used.
Is sewn with a diamond pattern quilting 8. When the diamond pattern quilting 8 is used, the migration of the swollen gel absorbed by the polymer sheet 3 and swollen 500 to 800 times can be prevented.
【００１６】キルテイング８された再生吸水シート４の
下面が３０〜５０μの薄いポリエチレンシート７にラミ
ネートされて遮水シート２０が構成されている。この実
施例の再生吸水シート２、４の代わりに目付量３０ｇ／
ｍ２のポリプロピレン不織布７にして厚さの薄い遮水シ
ート２０にしても良い。７ａは再生吸水シート２の上面
に接着したポリエチレンシート７の端部である。遮水シ
ート２０の接合は、前記遮水シート１０と同様に行なわ
れる。The lower surface of the recycled water absorbent sheet 4 that has been quilted 8 is laminated on a thin polyethylene sheet 7 having a thickness of 30 to 50 μm to form a water shield sheet 20. Instead of the regenerated water-absorbing sheets 2 and 4 of this example, a basis weight of 30 g /
The polypropylene non-woven fabric 7 of m 2 may be used as the water-impermeable sheet 20 having a small thickness. Reference numeral 7a is an end portion of the polyethylene sheet 7 adhered to the upper surface of the regenerated water absorbing sheet 2. The water-impermeable sheet 20 is joined in the same manner as the water-impermeable sheet 10.
【００１７】この発明の遮水シート１０、２０は、例え
ばトンネル工事等の土木工事において湧き水で工事用機
械の移動や歩行が困難となり、ゴムシートを敷く必要が
生じた時にゴムシートの下張りに使用することも可能で
あり、この発明は前記実施例に限定するものではない。The water-impermeable sheets 10 and 20 of the present invention are used for underlining a rubber sheet when it becomes necessary to lay a rubber sheet when spring water makes it difficult to move or walk the construction machine in civil engineering works such as tunnel construction. However, the present invention is not limited to the above embodiment.
【００１８】[0018]
【発明の効果】この発明の遮水シートは、以上説明した
ように構成されているので、以下に記載されるような効
果を奏する。EFFECTS OF THE INVENTION Since the water barrier sheet of the present invention is constructed as described above, it has the following effects.
【００１９】産業廃棄物の投下や老朽等によって内張り
したゴムが損傷して廃棄物で汚染された水が漏出しても
多量の水が遮水シートに吸収されて貯留されるので、汚
染された水が土壌中に浸透して自然環境を破壊する怖れ
がない。Even if the lining rubber is damaged due to the dropping or aging of industrial waste and the water contaminated with the waste leaks out, a large amount of water is absorbed and stored in the impermeable sheet, and thus is contaminated. There is no fear that water will penetrate into the soil and destroy the natural environment.
【００２０】遮水シートの主原料の再生吸水シートと吸
水膨潤性ポリマーシートは廃棄する紙おむつの再生品で
あるから、産業廃棄物のリサイクル活動に貢献できる上
に遮水シートを安価に製造できる。更に施工現場の作業
も容易となり工事費の節減と工期の短縮を図ることがで
きる。Since the recycled water absorbent sheet and the water absorbent swellable polymer sheet, which are the main raw materials for the water impervious sheet, are recycled diapers to be discarded, they can contribute to the recycling activity of industrial waste, and the impermeable sheet can be manufactured at low cost. Furthermore, the work at the construction site becomes easy, and the construction cost can be reduced and the construction period can be shortened.
【図１】この発明の一実施例を示す遮水シートの部分破
断斜視図である。FIG. 1 is a partially cutaway perspective view of a waterproof sheet according to an embodiment of the present invention.
【図２】遮水シートの部分側面図である。FIG. 2 is a partial side view of a waterproof sheet.
【図３】他の実施例の遮水シートの部分破断斜視図であ
る。FIG. 3 is a partially cutaway perspective view of a waterproof sheet according to another embodiment.
１ 吸水性シート ２、４ 再生吸水シート ３ 吸水膨潤性ポリマーシート ５ 遮水性シート ６、８ キルテイング ７ ポリエチレンシート １０、２０ 遮水シート 1 Water Absorbing Sheet 2, 4 Regenerated Water Absorbing Sheet 3 Water Absorbing Swelling Polymer Sheet 5 Water Impermeable Sheet 6, 8 Quilting 7 Polyethylene Sheet 10, 20 Water Impermeable Sheet
Claims (3)
の上下に吸水性シートを重ね合わせてキルテイング加工
し、キルテイングされた前記吸水性シートの下面に遮水
性シートをラミネートして一体のシートにしたことを特
徴とする遮水シート。1. A water-absorbent and swellable polymer sheet of a gelled substance is laminated with water-absorbent sheets on top and bottom for quilting processing, and a water-impermeable sheet is laminated on the lower surface of the quilted water-absorbent sheet to form an integral sheet. A waterproof sheet that is characterized by that.
い再生吸水シートと、ゲル化性物質の吸水膨潤性ポリマ
ーシートと、目付量の大きい再生吸水シートとを重ね合
わせてキルテイング加工し、キルテイングされた前記再
生吸水シートの下面に遮水性シートをラミネートして一
体のシートにしたことを特徴とする遮水シート。2. A non-woven water absorbent sheet, a regenerated water absorbent sheet having a large basis weight, a water absorbing and swelling polymer sheet of a gelling substance, and a regenerated water absorbent sheet having a large basis weight are laid and quilted, and then quilted. A water-blocking sheet, wherein a water-blocking sheet is laminated on the lower surface of the regenerated water-absorbing sheet thus prepared to form an integrated sheet.
の上下に目付量の大きい再生吸水シート又はポリプロピ
レン不織布を重ね合わせてキルテイング加工し、キルテ
イングされた前記再生吸水シート又はプロピレン不織布
にポリエチレンシートをラミネートして一体のシートに
したことを特徴とする遮水シート。3. A regenerated water-absorbent sheet having a large basis weight or a polypropylene non-woven fabric is laid on top and bottom of a water-swellable polymer sheet of a gelling substance and quilted, and a polyethylene sheet is laminated on the quilted regenerated water-absorbent sheet or propylene non-woven fabric. A water-impervious sheet characterized by being integrated into a single sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6245791A JPH0874223A (en) | 1994-09-02 | 1994-09-02 | Water-barrier sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6245791A JPH0874223A (en) | 1994-09-02 | 1994-09-02 | Water-barrier sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0874223A true JPH0874223A (en) | 1996-03-19 |
Family
ID=17138893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6245791A Pending JPH0874223A (en) | 1994-09-02 | 1994-09-02 | Water-barrier sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0874223A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007016529A (en) * | 2005-07-08 | 2007-01-25 | Tanaka:Kk | Water absorption type waterproofing mat |
| JP2014028477A (en) * | 2012-07-31 | 2014-02-13 | Oji Holdings Corp | Waterproof sheet |
| KR20210068202A (en) * | 2019-11-29 | 2021-06-09 | 한국광해관리공단 | Waterproof sheet to prevent soil infiltration of leaking leachate by heap leaching process and heap leaching system including the same |
-
1994
- 1994-09-02 JP JP6245791A patent/JPH0874223A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007016529A (en) * | 2005-07-08 | 2007-01-25 | Tanaka:Kk | Water absorption type waterproofing mat |
| JP2014028477A (en) * | 2012-07-31 | 2014-02-13 | Oji Holdings Corp | Waterproof sheet |
| KR20210068202A (en) * | 2019-11-29 | 2021-06-09 | 한국광해관리공단 | Waterproof sheet to prevent soil infiltration of leaking leachate by heap leaching process and heap leaching system including the same |
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