JP3243690B2 - Pipe lining material and method of manufacturing the same - Google Patents
Pipe lining material and method of manufacturing the sameInfo
- Publication number
- JP3243690B2 JP3243690B2 JP37079399A JP37079399A JP3243690B2 JP 3243690 B2 JP3243690 B2 JP 3243690B2 JP 37079399 A JP37079399 A JP 37079399A JP 37079399 A JP37079399 A JP 37079399A JP 3243690 B2 JP3243690 B2 JP 3243690B2
- Authority
- JP
- Japan
- Prior art keywords
- lining material
- synthetic resin
- plastic film
- resin liquid
- solidified layer
- 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.)
- Expired - Fee Related
Links
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、地下に埋設した管
の補修に用いるライニング材及びライニング材の製造方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lining material used for repairing a pipe buried underground and a method for producing the lining material.
【０００２】[0002]
【従来の技術】下水管を補修する場合に、熱硬化性樹脂
を含浸させた不織布の外周面に気密性を有するプラスチ
ックフィルムを被覆した管状のライニング材を用い、こ
の管状のライニング材内にエア等の流体を流しこの流体
の圧力によってライニング材を反転させながら下水管内
に挿入し、そのライニング材を管の内壁面に押圧された
状態でライニング材の熱硬化性樹脂を加温硬化させて内
張りするという方法が用いられている。2. Description of the Related Art When a sewer pipe is repaired, a tubular lining material in which an outer peripheral surface of a nonwoven fabric impregnated with a thermosetting resin is coated with an airtight plastic film is used, and air is introduced into the tubular lining material. The lining material is inserted into the sewer pipe while inverting the lining material by the pressure of this fluid, and the thermosetting resin of the lining material is heated and cured while the lining material is pressed against the inner wall surface of the pipe, and the lining is lined Is used.
【０００３】その際に用いるライニング材として、図８
に示すように、気密性のプラスチックフィルム(a) を被
覆したシ−ト状の樹脂吸着材(b) の端部どうしを縫製し
て管状に形成し、その縫製した接合部(c) 外面にリボン
テ−プ(d) を溶着すると共に、接合部の内面に補強材
(e) を裏当てしたものが知られている。As a lining material used at that time, FIG.
As shown in (1), the ends of a sheet-like resin adsorbent (b) covered with an airtight plastic film (a) are sewn to form a tube, and the sewn joint (c) is attached to the outer surface. Weld the ribbon tape (d) and attach a reinforcing material to the inner surface of the joint.
(e) is known.
【０００４】しかし、この従来のライニング材は、気密
性のプラスチックフィルムの縫製部分にリボンテ−プを
溶着する際に、高温の熱風を吹きつけながら溶着するた
めに縫製部分の温度が上がり、縫糸(f) が焼けてリボン
テ−プや気密性プラスチックフィルムにピンホ−ルが生
じることがあり、これによってライニング材内にエアを
送った際にエアが抜けて充分にふくらまなかったり、又
ピンホ−ルから汚水が漏洩することがあった。However, in this conventional lining material, when a ribbon tape is welded to a sewn portion of an air-tight plastic film, the temperature of the sewn portion rises because the welding is performed while blowing high-temperature hot air. f) Burning may cause pinholes on the ribbon tape or airtight plastic film, and when air is sent into the lining material, the air will not escape due to the air coming out and the pinholes will not be inflated. Sometimes leaked wastewater.
【０００５】また、上記リボンテ−プを縫製部分に溶着
するようにしたものであるから、リボンテ−プと縫糸と
の接合が充分でなく、ライニング材をふくらました際に
縫製部分が引張られ、これによって図９に示すように、
リボンテ−プと縫糸の接合部分が剥がれ、この間に空隙
(g) が生じ、この空隙内に汚水が流れて漏洩するという
ことが起こった。In addition, since the ribbon tape is welded to the sewn portion, the bonding between the ribbon tape and the sewing thread is not sufficient, and the sewn portion is pulled when the lining material is inflated. As shown in FIG.
The joint between the ribbon tape and the sewing thread peels off, leaving a gap
(g) occurred, and sewage flowed and leaked into the void.
【０００６】更に、ライニング材の縫製部分の内側に
は、補強材が設けられているので、ライニング材を反転
させて管内へ内張りする際に、この補強材の厚みによっ
てライニング材の縫製部分が管内へ突出しその近傍が弯
曲した状態になるので、ライニング材を弱める結果とな
り、又この補強材の部分が管の下側に位置した場合は、
汚水の流れを悪くすると共にライニング材の汚水流域を
少なくしている。Further, since a reinforcing material is provided inside the sewn portion of the lining material, when the lining material is reversed and lined in the pipe, the sewn portion of the lining material is formed in the pipe by the thickness of the reinforcing material. As it protrudes to the vicinity and becomes curved, it results in weakening of the lining material, and when this reinforcing material part is located under the pipe,
The flow of sewage is worsened and the basin of lining material is reduced.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、このような
問題点を解消すると共に、更に良好なものとするもので
あり、ライニング材の縫製部分を充分に補強し、ライニ
ング材をふくらます際にエア等の漏れを防ぐと共に汚水
の漏洩を防ぎ、しかも丈夫であって、更に簡便に、かつ
経済的に作ることができるライニング材及びその製造方
法を提供しようとするものである。DISCLOSURE OF THE INVENTION The present invention is intended to solve such a problem and to further improve such a problem. When the lining material is sewn sufficiently, the lining material can be inflated. An object of the present invention is to provide a lining material which prevents leakage of air and the like and sewage, and which is durable and can be made more easily and economically, and a method for producing the lining material.
【０００８】[0008]
【課題を解決するための手段】本発明は、熱硬化性樹脂
を含浸した樹脂吸収体に気密性を有するプラスチックフ
ィルムを被覆した帯状片を用い、その両端部を縫製して
管状体を形成し、この管状体の縫糸部及びこれに連接す
る部分に溶融した合成樹脂液を付着させ、この合成樹脂
液の固化層によって接合部（縫糸部及びこれに連接する
接合部分）を一体的に接合するようにしたものである。According to the present invention, a tubular body is formed by sewing both ends of a resin-impregnated resin-absorbent impregnated with a thermosetting resin coated with an airtight plastic film. Then, a molten synthetic resin liquid is adhered to a thread portion of the tubular body and a portion connected to the thread portion, and a joining portion (a thread portion and a joining portion connected to the thread portion) are integrally joined by a solidified layer of the synthetic resin solution. It is like that.
【０００９】また、縫糸部の合成樹脂液の固化層の厚さ
を縫糸部に連接する接合部分より厚く形成して更に縫製
部分を強化するようにしたものである。Further, the thickness of the solidified layer of the synthetic resin liquid in the sewing portion is formed to be thicker than the joint portion connected to the sewing portion, so that the sewing portion is further strengthened.
【００１０】更に、気密性を有するプラスチックフィル
ムと合成樹脂液の固化層を同質の材料で形成し、両者の
固着強度を更に高めるようにしたものである。Further, a solidified layer of a plastic film having an airtight property and a synthetic resin liquid is formed of the same material so as to further increase the fixing strength between the two.
【００１１】[0011]
【発明の実施の形態】ライニング材（１）の製造工程を
図１〜図４に示す。ライニング材（１）は、熱硬化性樹
脂を含浸した樹脂吸収体（２）と、気密性を有するプラ
スチックフィルム（３）を有するものであって、先ずこ
の樹脂吸収体（２）に、気密性を有するプラスチックフ
ィルム（３）を接着や溶着して被覆した帯状片（４）を
形成する（図１）。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A process for producing a lining material (1) is shown in FIGS. The lining material (1) has a resin absorber (2) impregnated with a thermosetting resin and a plastic film (3) having airtightness. A band-shaped piece (4) is formed by bonding or welding a plastic film (3) having the above (FIG. 1).
【００１２】樹脂吸収体（２）は、熱硬化性樹脂の含浸
が可能なポリエステル、ポリプロピレン、アクリル、ビ
ニロン、ナイロンその他の繊維よりなる不織布やフエル
ト地等で形成されており、又熱硬化性樹脂としては、不
飽和ポリエステル樹脂やエポキシ樹脂、ビニルエステル
樹脂等が用いられる。[0012] The resin absorber (2) is formed of a non-woven fabric or a felt material made of polyester, polypropylene, acrylic, vinylon, nylon or other fibers which can be impregnated with a thermosetting resin. For example, unsaturated polyester resin, epoxy resin, vinyl ester resin and the like are used.
【００１３】なお、気密性を有するプラスチックフィル
ム（３）には、ポリエチレン、ポリウレタン、ビニロ
ン、ナイロン、ポリプロピレン、ポリ塩化ビニル、ある
いはこれらの共重合体や積層体等が用いられる。The airtight plastic film (3) is made of polyethylene, polyurethane, vinylon, nylon, polypropylene, polyvinyl chloride, or a copolymer or laminate thereof.
【００１４】次に、図１に示す帯状片（４）を樹脂吸収
体（２）が内側になるように折りたたみ、その端部どう
しを重ね合わせ、この重ね合わせ部（５）をミシン等で
縫製する（図２）。Next, the band-like piece (4) shown in FIG. 1 is folded so that the resin absorber (2) is on the inside, the ends thereof are overlapped, and the overlapped portion (5) is sewn with a sewing machine or the like. (FIG. 2).
【００１５】縫製後、縫製部分をほぼ中央に位置するよ
うに移動させ、扁平状にして縫製部分の端面どうしを当
接させ管状体（６）を形成する（図３）。なお、樹脂吸
収体の弾性により管状体がふくらみ過ぎている場合は、
その表面にロ−ラをかけて扁平状に形成すると、次の作
業がし易くなる。After the sewing, the sewn portion is moved so as to be located substantially at the center, and the sewn portion is made flat and the end faces of the sewn portion are brought into contact with each other to form a tubular body (6) (FIG. 3). If the tubular body is bulging too much due to the elasticity of the resin absorber,
If a roller is formed on the surface to form a flat shape, the next operation becomes easier.
【００１６】上記縫製部分の縫糸部（７）及びこれに連
接する接合部分（８）に、押出し成型機（９）等を用い
て溶融した合成樹脂液を付着させ、これを固化して上記
縫製部分と一体化した合成樹脂液の固化層(10)を形成す
る（図４）。The molten synthetic resin liquid is adhered to the sewing thread part (7) of the sewing part and the joint part (8) connected to the sewing part using an extruder (9) or the like, which is solidified and sewn. A solidified layer (10) of the synthetic resin liquid integrated with the portion is formed (FIG. 4).
【００１７】押出し成型機（９）は、合成樹脂液の原料
となるペレット錠を投入するホッパ−(11)と、ヒ−タ−
部(12)と、合成樹脂を圧送するポンプ(13)と、Ｔダイ(1
4)を備えており、このＴダイのスリット(15)より所定の
厚みの合成樹脂液が押し出される。なお、押出し成型機
（９）として、その他種々の構造のものを用いることが
できる。The extruder (9) comprises a hopper (11) for charging a pellet tablet as a raw material of the synthetic resin liquid, and a heater (11).
Section (12), a pump (13) for pumping synthetic resin, and a T-die (1
The synthetic resin liquid having a predetermined thickness is extruded from the slit (15) of the T-die. In addition, as the extruder (9), those having various other structures can be used.
【００１８】合成樹脂液としては、上記気密性を有する
プラスチックフィルムと同様の材料を用いることがで
き、その際、合成樹脂液の材料を気密性を有するプラス
チックフィルムの材料と一致させると、接合の度合いが
一層強くなる。As the synthetic resin liquid, the same material as the above-mentioned airtight plastic film can be used. In this case, if the material of the synthetic resin liquid matches the material of the airtight plastic film, the joining The degree becomes stronger.
【００１９】なお、上記気密性を有するプラスチックフ
ィルム（３）を２層や３層（ポリエチレンとナイロンと
ポリエチレンあるいはポリエチレンとポリ塩化ビニルと
ポリエチレン、ポリエチレンとポリ塩化ビニルとポリウ
レタン、ポリウレタンとポリエチレンとポリウレタンそ
の他の材質の組み合わせ）等に形成した場合にも、その
外表面のフィルムの材料と上記合成樹脂液の材料を同じ
にするとよい。It is to be noted that two or three layers of the above-mentioned airtight plastic film (3) (polyethylene and nylon and polyethylene, polyethylene and polyvinyl chloride and polyethylene, polyethylene and polyvinyl chloride and polyurethane, polyurethane and polyethylene and polyurethane, etc.) It is also preferable that the material of the film on the outer surface and the material of the synthetic resin liquid be the same.
【００２０】合成樹脂液の固化層(10)の厚みは、例えば
図６（Ａ）に示すスリット(15)を有するＴダイ(14)を用
いてほぼ均一に形成したり、図６（Ｂ）や図６（Ｃ）に
示すようなＴダイ(14)を用いて、縫糸部（７）を縫糸部
に連接する接合部分（８）より厚く形成したり（図７）
することができる。この場合、実施例では、縫糸部
（７）の厚みを約１mmとし、縫糸部に連接する接合部分
（８）を0.３〜0.５mmとしているが、寸法はその他適宜
のものを用いることができる。The thickness of the solidified layer (10) of the synthetic resin liquid can be substantially uniform, for example, by using a T-die (14) having a slit (15) shown in FIG. Using a T-die (14) as shown in FIG. 6 or (C), the thread part (7) is formed to be thicker than the joint (8) connected to the thread part (FIG. 7)
can do. In this case, in the embodiment, the thickness of the thread portion (7) is set to about 1 mm, and the joint portion (8) connected to the thread portion is set to 0.3 to 0.5 mm. Can be.
【００２１】[0021]
【発明の効果】本発明は、上記のように熱硬化性樹脂を
含浸した樹脂吸収体に気密性を有するプラスチックフィ
ルムを被覆した帯状片を用い、その端部どうしを縫製接
合して管状体を形成し、この管状体表面の縫糸部及びこ
れに連接する接合部分に合成樹脂液の固化層を設け帯状
片の接合部を一体的に形成したものであるから、従来の
ように接合部にピンホ−ルが発生することがなく、又溶
融した合成樹脂液が縫糸部の隙間に万遍なく侵入縫糸部
と一体化するので、丈夫であって剥れたすることがな
く、しかもライニング材に熱硬化性樹脂を含浸する際の
真空引きの際やライニング材を管内でふくらます際にエ
アが漏れたり、あるいはライニング材内に汚水が侵入し
たり、ライニング材内の汚水が漏洩したりすることがな
い。According to the present invention, the tubular body is formed by joining the resin absorbent body impregnated with the thermosetting resin as described above to a strip-shaped piece coated with an airtight plastic film, and sewing the ends thereof together. A solidified layer of a synthetic resin liquid is provided on the thread portion on the surface of the tubular body and the joining portion connected thereto, and the joining portion of the strip is integrally formed. -Since the molten synthetic resin liquid is uniformly integrated with the thread part which penetrates into the gap between the thread parts, it is durable and does not peel off, and heat is applied to the lining material. No air leaks, no sewage penetrates into the lining material, and no sewage in the lining material leaks when vacuuming or inflating the lining material in the pipe when impregnating the curable resin .
【００２２】また、ライニング材の接合部には、従来の
ような補強材を裏当てしていないので、接合部が極端に
厚くならず、従って従来のように接合部が大きく弯曲し
て接合部を弱めたり、又汚水の流れを悪くしたり、汚水
の流域を狭めたりすることがない。Further, since the joining portion of the lining material is not backed with a reinforcing material as in the prior art, the joining portion does not become extremely thick, so that the joining portion is greatly curved as in the conventional case. It does not weaken the water, impair the flow of sewage, or narrow the basin of sewage.
【００２３】更に、縫糸部の合成樹脂液の固化層の厚さ
を縫糸部に連接する接合部分より厚く形成しているの
で、一層接合部を丈夫にし汚水の漏洩を防ぐことができ
る。Further, since the thickness of the solidified layer of the synthetic resin liquid at the sewing portion is formed to be thicker than the joining portion connected to the sewing portion, the joining portion can be made stronger and leakage of wastewater can be prevented.
【００２４】また、気密性を有するプラスチックフィル
ムと合成樹脂液の固化層を同材としているので、接合部
を強力に接合することができ、その際に両材をポリエチ
レンとすると、溶融化し易い上に安価にでき扱い易い。
更に気密性を有するプラスチックフィルムを３層とし、
その１層にナイロン等の通気性のない（あるいは殆んど
ない）フィルムを用いると、より一層エアや汚水の漏れ
をなくすことができる。Further, since the airtight plastic film and the solidified layer of the synthetic resin liquid are made of the same material, the joining portion can be strongly joined. In this case, if both materials are made of polyethylene, they are easily melted. Inexpensive and easy to handle.
In addition, three layers of airtight plastic film,
If a non-permeable (or almost non-permeable) film such as nylon is used for one layer, leakage of air and sewage can be further reduced.
【００２５】又、接合部は合成樹脂液の固化層を形成す
るだけの簡便な手段で接合しているので、経済的に製造
することができる。Further, since the joining portions are joined by a simple means only for forming a solidified layer of the synthetic resin liquid, it can be manufactured economically.
【図１】 帯状片を一部切欠いて示す斜面図である。FIG. 1 is an oblique view showing a band-shaped piece partially cut away.
【図２】 帯状片を折りたたみ、その端部どうしを縫製
した状態を一部示す斜面図である。FIG. 2 is a perspective view partially showing a state in which the strip is folded and its ends are sewn together.
【図３】 管状体を一部切欠いて示す斜面図である。FIG. 3 is a perspective view showing a tubular body with a part cut away.
【図４】管状体の接合部に合成樹脂液の固化層を形成す
る場合を示す拡大斜面図である。FIG. 4 is an enlarged perspective view showing a case where a solidified layer of a synthetic resin liquid is formed at a joint of a tubular body.
【図５】 接合部の拡大断面図である。FIG. 5 is an enlarged sectional view of a joint.
【図６】 押出し成型機のＴダイで、（Ａ）は均一厚さ
の合成樹脂液の固化層を形成し、（Ｂ）と（Ｃ）は縫糸
部に対応する固化層の中央部を厚目に形成する場合を示
す拡大断面図である。FIG. 6 shows a T-die of an extrusion molding machine, wherein (A) forms a solidified layer of a synthetic resin liquid having a uniform thickness, and (B) and (C) show the thickness of the central part of the solidified layer corresponding to the thread portion. It is an expanded sectional view which shows the case where it forms in eyes.
【図７】 Ｔダイの（Ｂ）で形成した合成樹脂液の固化
層を示す拡大断面図である。FIG. 7 is an enlarged sectional view showing a solidified layer of a synthetic resin liquid formed in (B) of a T-die.
【図８】 従来のライニング材を一部切欠いて示す斜面
図である。FIG. 8 is a perspective view showing a conventional lining material with a part cut away.
【図９】 従来のライニング材の接合部の拡大断面図で
ある。FIG. 9 is an enlarged sectional view of a joining portion of a conventional lining material.
１ ライニング材 ２ 樹脂吸収体 ３ 気密性を有するプラスチックフィルム ４ 帯状片 ６ 管状体 ７ 縫糸部 ８ 縫糸部に連接する接合部分 10 合成樹脂液の固化層 14 Ｔダイ DESCRIPTION OF SYMBOLS 1 Lining material 2 Resin absorber 3 Airtight plastic film 4 Strip-shaped piece 6 Tubular body 7 Thread part 8 Joint part connected to thread part 10 Solidified layer of synthetic resin liquid 14 T die
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 63/00 - 65/82 F16L 57/00 - 58/18 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) B29C 63/00-65/82 F16L 57/00-58/18
Claims (8)
密性を有するプラスチックフィルムを被覆した帯状片を
用いその両端部を縫製し接合して管状体を形成した管用
ライニング材において、管状体表面の縫糸部及びこれに
連接する接合部分に合成樹脂液の固化層を一体的に設け
たことを特徴とする管用ライニング材。1. A pipe lining material in which a tubular body is formed by sewing and joining both ends of a strip in which a resin absorber impregnated with a thermosetting resin is coated with a plastic film having airtightness. A lining material for a pipe, wherein a solidified layer of a synthetic resin liquid is integrally provided on a sewing portion on the surface and a joining portion connected thereto.
縫糸部に連接する接合部分より厚くした請求項１に記載
の管用ライニング材。2. The thickness of the solidified layer of the synthetic resin liquid in the sewing portion is
The lining material for a pipe according to claim 1, wherein the lining material is thicker than a joint portion connected to the sewing portion.
合成樹脂液の固化層を同質の材料で形成した請求項１ま
たは２に記載の管用ライニング材。3. The pipe lining material according to claim 1, wherein the airtight plastic film and the solidified layer of the synthetic resin liquid are formed of the same material.
合成樹脂液の固化層をポリエチレン材とした請求項３に
記載の管用ライニング材。4. The pipe lining material according to claim 3, wherein the solidified layer of the airtight plastic film and the synthetic resin liquid is made of polyethylene.
３層のプラスチックフィルムとし、このプラスチックフ
ィルムの表面の層と合成樹脂液の固化層を同質の材料で
形成した請求項１または２に記載の管用ライニング材。5. The pipe lining according to claim 1, wherein the airtight plastic film is a three-layer plastic film, and the surface layer of the plastic film and the solidified layer of the synthetic resin liquid are formed of the same material. Wood.
ポリエチレンとナイロンとポリエチレン材の３層のプラ
スチックフィルムとし、合成樹脂液の固化層をポリエチ
レン材とした請求項５に記載の管用プラスチック材。6. The plastic material for a pipe according to claim 5, wherein the airtight plastic film is a three-layer plastic film of polyethylene, nylon and polyethylene, and the solidified layer of the synthetic resin liquid is a polyethylene material.
密性を有するプラスチックフィルムを被覆して帯状片を
形成し、この帯状片を上記樹脂吸収体が内側になるよう
に折りたたんで端部どうしを重ね合わせ、この重ね合わ
せ部を縫製し接合して管状体を形成し、この管状体表面
の縫糸部及びこれに連接する接合部分に、合成樹脂材を
溶融させた合成樹脂液を付着させこの合成樹脂液の固化
層を一体的に形成した管用ライニング材の製造方法。7. A band-shaped piece is formed by covering a resin film impregnated with a thermosetting resin with an air-tight plastic film, and the band-shaped piece is folded so that the resin absorber is on the inside, and an end portion is formed. The overlapped portions are sewn and joined to form a tubular body, and a synthetic resin liquid in which a synthetic resin material is melted is adhered to a thread portion on the surface of the tubular body and a joining portion connected thereto. A method for producing a pipe lining material in which a solidified layer of the synthetic resin liquid is integrally formed.
縫糸部に連接する接合部分より厚く形成した請求項７に
記載の管用ライニング材の製造方法。8. The thickness of the solidified layer of the synthetic resin liquid in the sewing portion is
The method for manufacturing a pipe lining material according to claim 7, wherein the pipe lining material is formed to be thicker than a joint portion connected to the thread portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37079399A JP3243690B2 (en) | 1999-12-27 | 1999-12-27 | Pipe lining material and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37079399A JP3243690B2 (en) | 1999-12-27 | 1999-12-27 | Pipe lining material and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001179832A JP2001179832A (en) | 2001-07-03 |
| JP3243690B2 true JP3243690B2 (en) | 2002-01-07 |
Family
ID=18497611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37079399A Expired - Fee Related JP3243690B2 (en) | 1999-12-27 | 1999-12-27 | Pipe lining material and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3243690B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7261788B1 (en) * | 2003-11-07 | 2007-08-28 | Insitaform (Netherlands) B.V. | Preparation of cured in place liner with integral inner impermeable layer |
| JP5721932B2 (en) * | 2009-02-04 | 2015-05-20 | 吉佳エンジニアリング株式会社 | Pipe rehabilitation material and existing pipe rehabilitation method using the pipe rehabilitation material |
| JP4840708B2 (en) * | 2009-05-15 | 2011-12-21 | 有限会社横島 | Pipe lining material and manufacturing method thereof |
| KR101110664B1 (en) | 2009-07-31 | 2012-03-05 | 호용종합건설주식회사 | centring apparatus of tube lining bag |
| KR101110663B1 (en) | 2009-07-31 | 2012-02-16 | 호용종합건설주식회사 | coating apparatus of tube lining bag |
| KR101003092B1 (en) * | 2010-04-15 | 2011-01-03 | 정영철 | Manufacturing apparatus and method for tube lining material |
| KR200478904Y1 (en) | 2013-12-04 | 2015-11-30 | 정영철 | Manufacturing apparatus for tube lining material |
-
1999
- 1999-12-27 JP JP37079399A patent/JP3243690B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001179832A (en) | 2001-07-03 |
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