JP2942141B2 - Piping protection sheet - Google Patents
Piping protection sheetInfo
- Publication number
- JP2942141B2 JP2942141B2 JP6081461A JP8146194A JP2942141B2 JP 2942141 B2 JP2942141 B2 JP 2942141B2 JP 6081461 A JP6081461 A JP 6081461A JP 8146194 A JP8146194 A JP 8146194A JP 2942141 B2 JP2942141 B2 JP 2942141B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- pipe
- protective
- layer
- kraft paper
- 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
- Sewage (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地中に埋設されたプラ
スチック製配管を、掘削工具による打撃からの損傷を防
護するための配管用防護シ−トに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe protection sheet for protecting a plastic pipe buried underground from being damaged by a drilling tool.
【０００２】[0002]
【従来の技術】例えば、地中に埋設されたガス等の配管
は、作業中において掘削工具等により損傷を被ることが
ある。前記のガスの配管は、材質が合成樹脂のものであ
るので、前述のような事故を防ぐために、管の直上に標
識シ−トを埋設し、掘削作業時にその標識シ−トを見つ
けるか掘削工具等で引っかけるかして標識シ−トの下に
配管が埋設されていることを認識し、配管への損傷を未
然に防ごうとしている。2. Description of the Related Art For example, pipes of gas or the like buried in the ground may be damaged by a drilling tool or the like during work. Since the gas piping is made of synthetic resin, in order to prevent the above-mentioned accidents, a sign sheet is buried immediately above the pipe, and the sign sheet is found or excavated during excavation work. He recognizes that the pipe is buried under the sign sheet by hooking it with a tool or the like, and tries to prevent damage to the pipe.
【０００３】[0003]
【発明が解決しようとする課題】しかし、標識シ−トは
その下方に配管があるという表示をする目的で使用され
るもので、標識シ−トそのものが配管の防護の役目は果
たせない。そのため、掘削作業の際に深堀しすぎて標識
シ−トを見逃し、下方の配管に損傷を与えることとにも
なり、標識シ−トの位置がずれていると全く標識シ−ト
が役に立たないことになる。However, the sign sheet is used to indicate that there is a pipe below the sign sheet, and the sign sheet itself does not serve to protect the pipe. Therefore, during excavation work, the sign sheet may be overlooked too much to overlook the sign sheet, causing damage to the piping below. If the position of the sign sheet is shifted, the sign sheet is useless at all. Will be.
【０００４】そこで本発明は、これら課題を解決するた
めに、配管自体に巻き付けて直接的に配管を保護できる
シ−ト部材として、その構造に検討を加えたものであ
る。Therefore, in order to solve these problems, the present invention has been studied on the structure of a sheet member that can be wound around the pipe itself to directly protect the pipe.
【０００５】[0005]
【課題を解決するための手段】本発明は、クラフト紙４
の片面にフラットヤーン織布からなる合成樹脂製保護層
５が設けられ、且つ、前記クラフト紙４の他面には発泡
シートからなるクッション層３が設けられ、それぞれ接
合材６で一体構造を成し、前記クッション層３には粘着
剤層２を形成したことを特徴とする配管用防護シートで
ある。The present invention relates to a kraft paper 4
Is provided with a synthetic resin protective layer 5 made of a flat yarn woven fabric on one side , and foamed on the other side of the kraft paper 4.
A protective sheet for piping, wherein a cushion layer 3 made of a sheet is provided, each of which forms an integral structure with a bonding material 6, and an adhesive layer 2 is formed on the cushion layer 3.
【０００６】本発明の防護シートは、図１と図２に示す
ように、フラットヤーン織布からなる合成樹脂製保護層
５とクラフト紙４と発泡シートからなるクッション層３
を積層し、配管１に取り付けやすく粘着剤層２を設けた
多層構造を特徴とするものである。As shown in FIGS. 1 and 2, the protective sheet of the present invention comprises a protective layer 5 made of a synthetic resin made of woven flat yarn , a kraft paper 4 and a cushion layer 3 made of a foam sheet.
And a multilayer structure in which an adhesive layer 2 is provided so as to be easily attached to the pipe 1.
【０００７】[0007]
【作用】本発明の防護シートを配管１に巻き付けること
によって、切削工具の先端部などが配管に衝撃を加えた
際に、フラットヤーン織布からなる合成樹脂製保護層５
により直接的に配管１に傷が入ることを防護し、また、
発泡シートからなるクッション層３の働きによりその衝
撃が吸収され配管１に直接伝わることを抑制し、さらに
はクラフト紙４が防護シートとしての寸法安定に寄与す
るのである。By wrapping the protective sheet of the present invention around the pipe 1, when a tip of a cutting tool or the like applies an impact to the pipe, the synthetic resin protective layer 5 made of a flat yarn woven fabric is used.
Protects the pipe 1 from being damaged directly,
The impact of the cushion layer 3 made of a foamed sheet prevents the shock from being absorbed and transmitted directly to the pipe 1, and the kraft paper 4 contributes to dimensional stability as a protective sheet.
【０００８】[0008]
【実施例】本発明に係る配管用防護シ−トについて、以
下実施例により説明を加える。DESCRIPTION OF THE PREFERRED EMBODIMENTS A protective sheet for piping according to the present invention will be described below with reference to examples.
【０００９】実施例 高密度ポリエチレンを主原料としインフレ−ション法に
て筒状に製膜し、12mm幅にてスリットの後、熱板温度12
0℃、6.5倍延伸で延伸を行い約３％の熱収縮処理を行っ
た後ボビンに巻取り繊度1,000drのフラットヤ−ンをな
し、このフラットヤ−ンを経緯糸に用いてスルザ−織機
を使い経緯の織密度をそれぞれ10本/インチで平織り製織し
て織布に仕上げ、合成樹脂製保護層３を得た。EXAMPLE A high-density polyethylene was used as a main raw material to form a cylindrical film by an inflation method, slit at a width of 12 mm, and heated at a hot plate temperature of 12 mm.
After stretching at 0 ° C. and 6.5 times and performing a heat shrink treatment of about 3%, it is wound on a bobbin to form a flat yarn with a fineness of 1,000 dr, and the flat yarn is used as a warp yarn and a sulzer loom is used. Plain weave with a weaving density of 10 / inch in each process was finished to a woven fabric to obtain a synthetic resin protective layer 3.
【００１０】合成樹脂製保護層３の上面には押出ラミネ
−ト法にて低密度ポリエチレンを280℃にてＴダイより
製膜積層して被覆層７を形成し、下面には同様のラミネ
−トを接合材６として介在せしめ75g/m2のクラフト紙４
を接合した。[0010] On the upper surface of the protective layer 3 made of synthetic resin, a low-density polyethylene film is formed and laminated by a T-die at 280 ° C by an extrusion laminating method to form a coating layer 7. Kraft paper 4 of 75 g / m 2
Was joined.
【００１１】次に、クラフト紙４の面にとクッション層
３を積層するにおいて、接合材６として主原料をＥＶＡ
とするホットメルト材を選び150℃で溶融しグラビア法
にて５g/m2でクラフト紙面に塗布しクッション層３を接
合した。クッション層３としては厚さ４mmの30倍発泡の
ウレタンフォ−ムシ−トを選び用いた。ここで、ホット
メルトの塗布量について、塗布量を増やすと巻取の際に
巻き皺が発生し、少ないと積層強度が不充分となり素材
との関係で適量を設定すればよく、クッション層３の素
材としても制限されるものではなく、ポリプロピレンや
低密度ポリエチレン製の発泡シ−トなども使用できるも
のである。Next, in laminating the cushion layer 3 on the surface of the kraft paper 4, the main material as the bonding material 6 is EVA.
The hot melt material was melted at 150 ° C., applied to the kraft paper at 5 g / m 2 by a gravure method, and the cushion layer 3 was bonded. As the cushion layer 3, a urethane foam sheet having a thickness of 4 mm and foamed 30 times was selected and used. Here, with respect to the application amount of the hot melt, if the application amount is increased, winding wrinkles are generated at the time of winding, and if the application amount is small, the lamination strength is insufficient and an appropriate amount may be set in relation to the material. The material is not limited, and a foamed sheet made of polypropylene or low-density polyethylene can be used.
【００１２】こうして得られた積層物のクッション層面
には、ゴム系の粘着剤を溶剤に溶融し塗布の後に溶剤を
蒸発させて粘着剤層２を形成し、他面にはシリコンによ
る背面処理加工を施し離型層８を形成して、75mm幅にス
リットしながら巻取り、本実施例の防護シ−トを得た。On the cushion layer surface of the laminate thus obtained, a pressure-sensitive adhesive layer 2 is formed by melting a rubber-based pressure-sensitive adhesive in a solvent and, after coating, evaporating the solvent to form a pressure-sensitive adhesive layer 2. To form a release layer 8, which was wound up while being slit to a width of 75 mm to obtain a protective sheet of this example.
【００１３】比較例 本実施例の防護シ−トの構造において、合成樹脂製保護
層が存在しない防護シ−トを比較例１、クッション層が
存在しない防護シ−トを比較例２、クラフト紙が存在し
ない防護シ−トを比較例３とした。Comparative Example In the structure of the protective sheet of the present embodiment, the protective sheet having no protective layer made of synthetic resin is Comparative Example 1; the protective sheet having no cushion layer is Comparative Example 2; A protective sheet having no was designated as Comparative Example 3.
【００１４】実施例及び比較例の防護シ−トをポリエチ
レン管50Ａにスパイラル状に巻き付けたものと何も施さ
ないポリエチレン管をそれぞれ固定し、これらのポリエ
チレン管の垂直上で重さ２kgの鉄片を高さ２ｍのところ
から10回自由落下させて損傷度合の比較を行った。The protective sheets of Examples and Comparative Examples were spirally wound around a polyethylene tube 50A and a polyethylene tube which was not subjected to any treatment was fixed, and an iron piece weighing 2 kg was vertically placed on the polyethylene tube. Drops were freely dropped 10 times from a height of 2 m to compare the degree of damage.
【００１５】何も保護しないポリエチレン管には２mm程
度の傷が多数有り、内部まで亀裂は浸透しており管肉厚
の1/3にまで達していた。また、各比較例の防護シ−ト
を巻き付けたポリエチレン管は、損傷の度合いは抑えら
れてはいるものの、亀裂が管肉厚の1/4〜1/2程度に達す
るものもあり、保護材としては不充分なものであった。The polyethylene pipe which does not protect anything had many scratches of about 2 mm, and the crack penetrated to the inside, reaching 1/3 of the pipe wall thickness. In addition, although the degree of damage was suppressed in the polyethylene pipe wound with the protective sheet of each comparative example, the crack reached about 1/4 to 1/2 of the pipe wall thickness. Was inadequate.
【００１６】一方、実施例の防護シ−トを巻き付けたポ
リエチレン管は、合成樹脂製保護層及びクッション層迄
に及ぶ傷がありポリエチレン管にも傷が認められるが、
その傷の深さは測定不可能な程度の浅い筋状の傷であ
り、防護シ−トとして充分に効果的なものであることが
認められた。On the other hand, the polyethylene pipe wound with the protective sheet of the embodiment has a scratch extending to the protective layer and the cushion layer made of synthetic resin, and the polyethylene pipe is also scratched.
The depth of the flaw was a streak-like flaw that could not be measured, and was found to be sufficiently effective as a protective sheet.
【００１７】また、クラフト紙が存在しない比較例３と
実施例の防護シ−トをそれぞれポリエチレン管50Ａにス
パイラル状に巻き付け地下1.2ｍに埋設し期間経過後に
掘り起こしスパイラル巻きの部分の状態をみたところ、
実施例はシ−ト間の隙間は見られなかったが、比較例３
は概ね１〜２mmの隙間が部分的に出来ており、クラフト
紙の介在が巻状態の寸法安定性に寄与することが確認さ
れるものであった。Further, the protective sheets of Comparative Example 3 and Example having no kraft paper were spirally wound around a polyethylene pipe 50A, respectively, and buried 1.2 m underground. ,
In Example, no gap between the sheets was found, but Comparative Example 3
, A gap of approximately 1 to 2 mm was partially formed, and it was confirmed that the presence of kraft paper contributed to the dimensional stability of the wound state.
【００１８】[0018]
【発明の効果】以上のように本発明によれば、掘削工具
の先端部などがフラットヤーン織布からなる合成樹脂製
保護層及び発泡シートからなるクッション層により、阻
止及び衝撃吸収され配管への損傷が大幅に減少すると共
に積層物中にクラフト紙を介在させることで寸法安定性
が大幅に向上するものとなったのである。As described above, according to the present invention, the tip of a drilling tool is prevented and absorbed by a protective layer made of a synthetic resin made of a flat yarn woven fabric and a cushion layer made of a foamed sheet . The damage was greatly reduced, and the dimensional stability was greatly improved by interposing kraft paper in the laminate.
【図１】本発明の防護シ−トの拡大斜視図である。FIG. 1 is an enlarged perspective view of a protection sheet of the present invention.
【図２】本発明の防護シ−トを配管に巻き付けた状態の
断面図である。FIG. 2 is a sectional view showing a state in which the protective sheet of the present invention is wound around a pipe.
【符号の説明】 １ 配管 ２ 粘着剤層 ３ クッション層 ４ クラフト紙 ５ 合成樹脂製保護層 ６ 接合材 ７ 被覆層 ８ 離型層[Description of Signs] 1 Piping 2 Adhesive layer 3 Cushion layer 4 Kraft paper 5 Protective layer made of synthetic resin 6 Bonding material 7 Coating layer 8 Release layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ｅ０３Ｆ 3/06 Ｅ０３Ｆ 3/06 (58)調査した分野(Int.Cl.6，ＤＢ名) F16L 57/00 - 59/22 B32B 5/18 B32B 7/10 B32B 27/00 B32B 27/10 E03F 3/06 ────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 identification symbol FI // E03F 3/06 E03F 3/06 (58) Field surveyed (Int.Cl. 6 , DB name) F16L 57/00-59 / 22 B32B 5/18 B32B 7/10 B32B 27/00 B32B 27/10 E03F 3/06
Claims (1)
布からなる合成樹脂製保護層５が設けられ、且つ、前記
クラフト紙４の他面には発泡シートからなるクッション
層３が設けられ、それぞれ接合材６で一体構造を成し、
前記クッション層３には粘着剤層２を形成したことを特
徴とする配管用防護シート。1. A flat yarn weave on one side of kraft paper 4.
A protective layer 5 made of a synthetic resin made of cloth is provided, and a cushion layer 3 made of a foamed sheet is provided on the other surface of the kraft paper 4.
A protective sheet for piping, wherein the pressure-sensitive adhesive layer 2 is formed on the cushion layer 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6081461A JP2942141B2 (en) | 1994-04-20 | 1994-04-20 | Piping protection sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6081461A JP2942141B2 (en) | 1994-04-20 | 1994-04-20 | Piping protection sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07293780A JPH07293780A (en) | 1995-11-10 |
| JP2942141B2 true JP2942141B2 (en) | 1999-08-30 |
Family
ID=13747043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6081461A Expired - Fee Related JP2942141B2 (en) | 1994-04-20 | 1994-04-20 | Piping protection sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2942141B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63128026U (en) * | 1987-02-14 | 1988-08-22 |
-
1994
- 1994-04-20 JP JP6081461A patent/JP2942141B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07293780A (en) | 1995-11-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |