JPH0242551B2 - - Google Patents
Info
- Publication number
- JPH0242551B2 JPH0242551B2 JP16081085A JP16081085A JPH0242551B2 JP H0242551 B2 JPH0242551 B2 JP H0242551B2 JP 16081085 A JP16081085 A JP 16081085A JP 16081085 A JP16081085 A JP 16081085A JP H0242551 B2 JPH0242551 B2 JP H0242551B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- liquid
- primer
- adhesive
- coating material
- 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
Links
- 239000011248 coating agent Substances 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 20
- 239000000853 adhesive Substances 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000010422 painting Methods 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 description 12
- 239000010408 film Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は管路内面の塗装工法に関する。[Detailed description of the invention] Industrial applications The present invention relates to a method for painting the inner surface of a pipe.
従来の技術
従来、管路内面の塗装工法として、管路内にピ
グを流体圧や牽引力で移動しながら、塗材を管路
内面に塗着するピグ方式や、塗材をエアーで吹き
飛ばして塗装するエア噴射方式が提案されてい
る。Conventional technology Conventional methods for painting the inner surface of pipes include the pig method, in which the coating material is applied to the inner surface of the pipe while moving the pig inside the pipe using fluid pressure or traction force, and the painting method, in which the coating material is blown out with air. An air injection method has been proposed.
発明が解決しようとする問題点
ところがピグ方式では、例えば同口径の直線状
の管路に適用する場合は特に問題はないが、例え
ば都市ガスの室内配管などのように、管路が複雑
で且つ口径差を有する場合には、ピグの管路内移
動ができないため、切断個所を数多く取ることが
必要となり、作業性に欠ける難点があつた。また
エア噴射方式では、管路内の通過性はよいが、塗
膜の形成状態にばらつきを生じ易く塗装の信頼性
に欠ける難点があつた。Problems to be Solved by the Invention However, with the pig method, there is no particular problem when applied to straight pipes of the same diameter, but when the pipes are complicated and In the case of having a difference in diameter, the pig cannot be moved within the pipe, so it is necessary to make many cuts, resulting in a disadvantage of poor workability. In addition, in the air injection method, the passage through the pipe is good, but there is a problem in that the state of the coating film is likely to vary and the reliability of the coating is lacking.
本発明はこのような従来の問題点を一掃するこ
とを目的としてなされたものである。 The present invention has been made with the aim of eliminating such conventional problems.
問題点を解決するための手段
本発明は、塗材として二液非混合型接着剤を用
い、該接着剤のＡ液（又はＢ液）を管路内充填後
エアブローすることにより、管路内面にＡ液（又
はＢ液）の薄い塗膜を形成し、次に管路内にＢ液
（又はＡ液）を充填し、Ａ，Ｂ両液を接触界面で
反応硬化せしめて後、エアブローして、管路内よ
り過剰のＢ液（又はＡ液）を排出せしめることを
特徴とする管路内面の塗装工法に係る。Means for Solving the Problems The present invention uses a two-component non-mixable adhesive as a coating material, and fills the pipe with liquid A (or liquid B) of the adhesive and then blows air to coat the inner surface of the pipe. A thin coating film of liquid A (or liquid B) is formed on the pipe, and then liquid B (or liquid A) is filled into the pipe, and both liquids A and B are reacted and cured at the contact interface, and then air blown. The present invention relates to a method for painting the inner surface of a pipe, which is characterized by draining excess liquid B (or liquid A) from the inside of the pipe.
実施例
以下に本発明工法の一実施例を添付図面にもと
づき説明すると次の通りである。Embodiment An embodiment of the construction method of the present invention will be described below based on the accompanying drawings.
本発明による管路内面の塗装工法に於ては、塗
材として二液非混合型接着剤が用いられる。この
ような二液非混合型接着剤そのものは公知であ
り、例えばプライマー型と二液本剤型が市販され
ており、そのいずれも用い得るが、とりわけプラ
イマー型が好ましい。 In the method of painting the inner surface of a pipe according to the present invention, a two-component non-mixable adhesive is used as the coating material. Such two-component non-mixable adhesives are known per se, and for example, primer type and two-component main type adhesives are commercially available, both of which can be used, but the primer type is particularly preferred.
プライマー型の接着剤は、本剤とプライマーに
分かれ、プライマーの作用により本剤が化学反応
を起して硬化するようになつている。一般に本剤
は、エラストマー、アクリルモノマー、硬化触媒
及び安定剤からなり、一方プライマーは硬化助触
媒であつて、過酸化物を主成分としている。 Primer-type adhesives are divided into a main agent and a primer, and the main agent causes a chemical reaction and hardens due to the action of the primer. Generally, this agent consists of an elastomer, an acrylic monomer, a curing catalyst, and a stabilizer, while the primer is a curing cocatalyst and mainly contains peroxide.
また二液本剤型はＡ剤とＢ剤の両方にエラスト
マー成分例えばニトリルゴムを含んでおり、Ａ剤
には硬化触媒、Ｂ剤には硬化促進剤が配合されて
いる。この接着剤はＡ剤及びＢ剤がほぼ同粘度で
ある。 In addition, in the two-component formulation, both the A and B parts contain an elastomer component, such as nitrile rubber, and the A part contains a curing catalyst, and the B part contains a curing accelerator. In this adhesive, Part A and Part B have approximately the same viscosity.
以下に本発明工法をプライマー型接着剤を用い
て実施した場合につき説明する。 The case where the method of the present invention is implemented using a primer type adhesive will be explained below.
管路ａは幹管a1と、該幹管a1より小口径の２本
の分岐管a2を含み、この管路ａ内に、第１図に示
すように矢符１の方向から、プライマー２を充填
し、次に第２図に示すように、矢符３の方向から
プライマー１の一部が管路ａ内面に薄膜に付着し
残るような条件下でエアーブロして、管路ａ内充
填のプライマー２の大部分を、槽４，５及び６内
に排出回収する。プライマー１は低粘性で管路ａ
内面への付着性がよいので、プライマーの薄膜
2aを管路ａ全面に均一に形成できる。 Pipeline a includes a main pipe a1 and two branch pipes a2 having a smaller diameter than the main pipe a1 , and inside this pipeway a, as shown in FIG. 1, from the direction of arrow 1, Primer 2 is filled, and then, as shown in FIG. Most of the internally filled primer 2 is discharged and collected into tanks 4, 5 and 6. Primer 1 has low viscosity and is used in pipe a.
A thin film of primer is applied as it has good adhesion to the inner surface.
2a can be formed uniformly over the entire surface of the pipe a.
次に第３図に示すように、管路ａ内に本剤７を
充填し、各管口に蓋８を施し、本剤７がプライマ
ー薄膜２ａとの接触界面で反応硬化するまでの
間、例えば10〜60分程度、そのまま保持する。 Next, as shown in FIG. 3, the agent 7 is filled into the pipe line a, and a lid 8 is placed on each tube opening, until the agent 7 reacts and hardens at the contact interface with the primer thin film 2a. Hold it for about 10 to 60 minutes, for example.
10〜60分経過した後、即ち本剤７がプライマー
薄膜２ａとの接触部で充分に反応硬化した後、蓋
８′を外し、エアーブローして、過剰の本剤７を、
槽８，９及び１０に排出回収することにより、管
路ａ内面に接着剤の硬化物からなる塗膜１１を形
成できる。この場合、塗膜１１の内面には、未反
応、未硬化の本剤が僅かに付着して残るので、管
路ａ内に更にプライマーを再充填して、残つた本
剤を硬化せしめたり、或はプライマーを再充填す
ることなしに又は再充填した後に、適宜の洗滌液
で管路内面を洗滌するなどの、後処理を施すこと
ができる。プライマー及び本剤の充填の順序は、
図示の例とは逆に、本剤次いでプライマーの順で
あつてもよい。 After 10 to 60 minutes have elapsed, that is, after the agent 7 has sufficiently reacted and hardened at the contact portion with the primer thin film 2a, remove the lid 8' and blow air to remove excess agent 7.
By discharging and collecting in the tanks 8, 9, and 10, a coating film 11 made of a cured adhesive can be formed on the inner surface of the pipe a. In this case, a small amount of unreacted and uncured main agent remains attached to the inner surface of the coating film 11, so the primer is further refilled in the pipe a and the remaining main agent is cured. Alternatively, post-treatment such as washing the inner surface of the pipe with an appropriate cleaning liquid can be performed without or after refilling the primer. The order of filling the primer and this agent is as follows:
Contrary to the illustrated example, the main agent may be followed by the primer in that order.
塗材として二液本剤型を用いる場合には、管路
内面への付着性を考慮してできるだけ粘性の低い
ものを用いることが望ましく、Ａ剤とＢ剤に粘性
に差がある場合は、粘性の低い方を先に充填する
ことが、好ましい。 When using a two-component coating material, it is desirable to use one with as low a viscosity as possible in consideration of adhesion to the inner surface of the pipe, and if there is a difference in viscosity between Part A and Part B, It is preferable to fill the one with lower viscosity first.
効 果
このように本発明工法に於ては、塗材として特
に二液非混合型接着剤を用い、これを管路内に充
填して塗膜を形成するような方法を採用している
ので、管路が仮に屈曲部、分岐部及び異径部を多
数含むような複雑な配管系であつても、多数に小
分け分断するなどの必要性なしに、一度に広い範
囲に亘つて施工でき、施工性を改善できる。。Effects As described above, in the construction method of the present invention, a two-component non-mixable adhesive is used as the coating material, and a method is adopted in which the adhesive is filled into the pipe to form a coating film. Even if the pipeline is a complex piping system that includes many bends, branches, and sections with different diameters, it can be constructed over a wide area at once without the need to divide it into multiple sections. Workability can be improved. .
更に塗材は充填接触によつて硬化するので、複
雑な管路に対してでも、管路全体に亘つてむらな
く均一に塗膜形成でき、品質のよい塗膜を形成で
きる。 Furthermore, since the coating material is cured by contact with the filling material, it is possible to form a coating film evenly and uniformly over the entire pipeline, even for complex pipelines, and a coating film of good quality can be formed.
更に塗材は二液非混合型であるので、可使時間
の制限がなく作業がし易いと共に、接触するとす
ぐに反応硬化するので塗膜を短時間で形成できる
などの利点もある。 Furthermore, since the coating material is a two-component non-mixable type, there are no restrictions on pot life and it is easy to work with, and it also has the advantage of being able to form a coating film in a short time because it reacts and cures immediately upon contact.
更に塗材は管路の腐蝕孔や継目の隙間に浸入し
て反応硬化し、之等を封止すると共に、反応硬化
が速みやかに行なわれるので、エアーブロー時に
吹抜けを生ずることがなく、管路の補修を確実に
達成できる。 Furthermore, the coating material penetrates into the corroded holes and gaps between the joints of the pipes and reacts and hardens, sealing them, etc., and because the reaction hardening occurs quickly, no blow-through occurs during air blowing. Repair of pipelines can be achieved reliably.
第１図乃至第４図は、本発明工法の一実施例を
工程順に示す概略説明図である。
図に於て、２はプライマー、７は本剤、８′は
蓋、１１は塗膜である。
FIGS. 1 to 4 are schematic explanatory diagrams showing one embodiment of the construction method of the present invention in the order of steps. In the figure, 2 is the primer, 7 is the main agent, 8' is the lid, and 11 is the coating film.
Claims (1)
着剤のＡ液（又はＢ液）を管路内充填後エアブロ
ーすることにより、管路内面にＡ液（又はＢ液）
の薄い塗膜を形成し、次に管路内にＢ液（又はＡ
液）を充填し、Ａ，Ｂ両液を接触界面で反応硬化
せしめて後、エアブローして、管路内より過剰の
Ｂ液（又はＡ液）を排出せしめることを特徴とす
る管路内面の塗装工法。1 Using a two-component non-mixable adhesive as a coating material, fill the pipe with liquid A (or liquid B) of the adhesive and then blow air to coat the inner surface of the pipe with liquid A (or liquid B).
Form a thin coating film of liquid B (or liquid A) inside the pipe.
The inner surface of the pipe is filled with liquid A and B, and after both liquids A and B are reacted and cured at the contact interface, air is blown to discharge excess liquid B (or liquid A) from the inside of the pipe. Painting method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16081085A JPS6223482A (en) | 1985-07-19 | 1985-07-19 | Method for coating inner surface of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16081085A JPS6223482A (en) | 1985-07-19 | 1985-07-19 | Method for coating inner surface of pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6223482A JPS6223482A (en) | 1987-01-31 |
| JPH0242551B2 true JPH0242551B2 (en) | 1990-09-25 |
Family
ID=15722916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16081085A Granted JPS6223482A (en) | 1985-07-19 | 1985-07-19 | Method for coating inner surface of pipeline |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6223482A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2581152B2 (en) * | 1988-04-28 | 1997-02-12 | 三井石油化学工業株式会社 | Acrylic resin lining method |
| DE19745642C5 (en) * | 1997-10-15 | 2004-12-02 | Michael Schaaf | Process for the rehabilitation of encrusted pipelines for water management by cleaning and coating |
| US6262500B1 (en) * | 1999-10-05 | 2001-07-17 | Teikoku Tsushin Kogyo Co., Ltd. | Vibration generator |
| KR100454475B1 (en) * | 2002-03-20 | 2004-10-28 | 에이테크솔루션(주) | Electroless plating method for the cooling line of injection molding |
-
1985
- 1985-07-19 JP JP16081085A patent/JPS6223482A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6223482A (en) | 1987-01-31 |
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