JPH03249499A - Method of covering pipe with heat insulator - Google Patents

Abstract

PURPOSE:To facilitate the working with a small number of steps by winding an exterior material in which a layer made of paper, cloth, synthetic resin or like laminated over a thick paper sheet through the intermediary of a pressure sensitive adhesive, onto a pipe wounded therearound with a heat insulator, and by fixing the overlapped parts of the exterior material with the use of staples. CONSTITUTION:A heat insulator 2 such as glass wool, foamed polystyrene or the like is wound around a pipe line 1. An exterior material 10 is wound onto the heat insulator 2, being extended in the axial direction of the pipe line 1. The exterior material 10 is composed of a thick paper sheet such as a corrugated carboard, a carboard or the like, and one layer made of paper, cloth, synthetic resin or the like and laminated over the thick paper sheet by means of a pressure sensitive adhesive applied over one surface of the thick paper sheet. The widthwise end parts 101 of the exterior material are fastened together by staples 14 in the axial direction of the pipe line 1. Further, a mending tape 15 is applied thereover. As a result, it is possible to remarkably reduce the time for covering the pipe line and the cost thereof with a small number of working steps.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for coating piping with a heat insulating material, and particularly relates to a method that allows a pipe to be coated with a heat insulating material with a simple operation.

(Prior Art) Conventionally, piping for various fluids such as cold water, hot water, and steam for air conditioning, and cold water, hot water, and steam for industrial use has been designed to prevent loss of the cold energy and thermal energy possessed by these various fluids. , coated with insulation material.

Glass wool, polystyrene foam, etc. are generally used as this heat insulating material.

By the way, according to the Ministry of Construction's specifications for outdoor exposed parts, the exterior of the piping covered with the above-mentioned heat insulating material is wrapped with cotton tape in a spiral pattern, and then paint is applied on top of this. It has become.

However, the above-mentioned insulating materials such as glass wool and polystyrene foam are highly flexible, and if cotton tape is wrapped directly around these insulating materials, the insulating material will deform and sometimes become soaked, causing the air contained in the insulating material to leak out. This can significantly reduce the insulation effect of air.

Conventionally, a method has been used to prevent the above deformation or crushing by wrapping thick paper such as cardboard or paperboard around a flexible heat insulating material before wrapping the cotton tape around it.

That is, as shown in FIG. 4, after wrapping the above-mentioned heat insulating material 2 such as glass wool or polystyrene foam around the piping 1, wrapping the above-mentioned cardboard 3 such as cardboard or cardboard,
After that, a cotton tape 4 was wound spirally, and finishing paint (not shown) was applied onto the cotton tape 4.

(Problem to be solved by the invention) However, in the conventional insulation coating method as described above,
This method involves many steps, is time-consuming, and causes an increase in coating costs.

Moreover, when winding the cotton tape 4 spirally around the cardboard 3 as described above, the work is extremely complicated because the cardboard 3 has high rigidity, and the winding of the cardboard 3 takes a long time.
This not only increases the cost of covering, but also lengthens the period of covering.

On the other hand, as a coating technology for heat insulation of piping, in order to simplify the coating process, as shown in Fig. A reinforcing layer 22 of a base material 23 consisting of a reinforcing layer 22 of polyethylene film, glass fiber cloth, etc. for the purpose of imparting strength.
A technique using a tape provided with an adhesive layer 24 at one end of the side has been proposed (Utility Model Publication No. 60-30045).

That is, this tape is wrapped around the pipe, and the metal thin film 21 that is in contact with the adhesive layer 24 is adhered.

According to this tape, the adhesive layer 2 is used to fix the pipe and the tape.
Since this is done by adhesion in step 4, there are the following problems.

■If the adhesive layer 24 and the metal thin film 21 are not in contact with each other,
Fixation becomes impossible.

(2) If the contact area between the adhesive layer 24 and the metal thin film 21 is extremely small, strong fixation between the pipe and the tape becomes impossible.

In addition, in order to make it easier to coat the curved or bent parts of the piping, the piping is coated with a sheet coated with a foam coating agent (which may have an aluminum vapor deposited layer), and then heated to coat the coating agent. A technique for foaming has also been proposed (Japanese Unexamined Patent Publication No. 177398/1983).

However, when using this sheet, it is necessary to heat it after wrapping it around the piping, which not only prolongs the covering period, but also makes it impossible to work on-site without heating equipment, or it is impossible to work on-site without heating equipment. There are some inconveniences such as having to bring it with you.

The present invention has been made in view of the above points, and
The purpose is to propose a method that can coat pipes with a heat insulating material at low cost, with few steps, easy operation, and no special equipment required.

(Means for Solving the Problems) In order to achieve the above object, the method of coating a pipe with a heat insulating material according to the present invention includes wrapping a heat insulating material around a pipe, and then coating the pipe with a paper via an adhesive. An exterior material made by laminating any one of the two synthetic resin layers is wrapped in the axial direction of the pipe, and the overlapping or abutted portions of the exterior materials are fixed with a fastener such as a stapler. shall be.

Furthermore, the method of covering piping with a heat insulating material according to the present invention includes pasting paper, cloth, or synthetic resin adhesive tape, or cut pieces of the above-mentioned exterior material, on the part fixed with the above-mentioned fasteners. It is also characterized by

(Function) In the present invention, an exterior material is prepared by applying an adhesive on cardboard in advance and laminating one of paper, cloth, and a synthetic resin layer on the adhesive.

Then, in a factory or on-site, the piping is first wrapped with a heat insulating material such as glass wool or polystyrene foam.

Next, the above-mentioned exterior material is wrapped around the above-mentioned heat insulating material.

At this time, the exterior material is wrapped in the axial direction of the pipe around which the heat insulating material is wrapped.

At this time, if the sheathing material is a sheet-like material having a width slightly larger than the outer periphery of the pipe around which the insulation material is wrapped, when the sheathing material is wrapped in the above manner, both ends of the sheathing material in the width direction overlap.

In addition, if the exterior material or sheet-like material has a width that is the same as or slightly smaller than the outer circumference of the pipe around which the insulation material is wrapped, when it is wrapped in the above manner, both ends of the exterior material in the width direction They collide.

Thereafter, the overlapping or abutting portions of the exterior material are fastened with a fastener such as a stapler.

With the above steps, the work of covering the pipes with heat insulating material is completed.

Further, in the present invention, paper, cloth, or synthetic resin adhesive tape, or the above-mentioned exterior material cut into narrow widths can be pasted on the portion fixed with the stopper.

In other words, in places where piping is located under or inside the building's structural materials, there is no problem in using it as is, such as stapled as described above, but especially if the piping is exposed to the outside of the building. In some cases, if the staples are left in place, the fasteners may deteriorate the aesthetics, or if the fasteners rust, the rust will accelerate the deterioration of the aesthetics, and the fasteners may cause injury to people. Accidents may occur.

The occurrence of such a situation can be prevented by pasting the above-mentioned adhesive tape or the exterior material cut into narrow widths onto the stapler or the like.

Further, as described above, when the exterior material is a sheet-like body having a width slightly smaller than the outer periphery of the pipe around which the heat insulating material is wound, a slight gap is generated at the abutted portion. This gap can also be filled by pasting the above-mentioned adhesive tape or exterior material cut into narrow widths with staples, etc.

(Example) FIG. 1 is an explanatory diagram showing an example of a method for coating piping with a heat insulating material according to the present invention.

In the figure, first, a heat insulating material 2 such as glass wool or polystyrene foam is wrapped around a pipe 1 in the same manner as in the conventional case.

Next, the exterior material 10 is wrapped around the heat insulating material 2 in the axial direction of the pipe 1.

As the second exterior material 10, for example, a sheet-like body as shown in FIG. 2 is used.

That is, an adhesive 12 is coated on one side of a thick paper 11 such as cardboard or paperboard, and a layer 13 of any one of paper, cloth, and synthetic resin is laminated on the adhesive 12, and then the above-mentioned piping is assembled. The width dimension d is slightly larger than the outer circumference of the heat insulating material 2 wrapped around the heat insulating material 1.

Although the length dimension g is shown to be approximately the same as the width dimension d in FIG. 2, it can be adjusted to an appropriate value in consideration of the length of the pipe 1 and workability.

For example, if the pipe 1 is short, it may have the same length p as the length of the pipe 1, and if the pipe 1 is long, it may have the same length p as the pipe 1. 1
Since it is difficult to work with 0 windings, the appropriate length dimension g
All you have to do is make adjustments such as cutting.

In this example, when the exterior material 10 is wrapped around the heat insulating material 2 wrapped around the pipe 1 as described above, the ends of the exterior material 10 in the width direction overlap each other, as shown in FIG.

A plurality of staples are applied to this overlapping portion 101 in the axial direction of the pipe 1.

Thereafter, adhesive tape 15 made of paper, cloth, or synthetic resin is pasted to cover the stapler 14.

Note that instead of these adhesive tapes 15, it is also possible to use an exterior material 10 cut to a desired width as shown in FIG. 2.

In this case, the surface of the cut cardboard 1] side of the exterior material 10,
Alternatively, the cut exterior material 10 may be attached after applying an adhesive to the stapled portion 14 shown in FIG.

FIG. 3 is an explanatory diagram showing another embodiment of the method of covering piping with a heat insulating material according to the present invention, and the same parts as in FIGS. 1 and 2 are the same as in FIGS. 1 and 2. It shows.

In this example, as the exterior material 10, a material having a width d that is slightly smaller than the outer circumference of the heat insulating material 2 wrapped around the pipe 1 is used.

Therefore, when this exterior material 10 is wrapped around the heat insulating material 2 wrapped around the pipe 1, a slight gap 102 is left between the ends of the exterior material 10 in the width direction, as shown in FIG. They are butted against each other.

Stapling is performed with a plurality of staplers 14 so as to bridge this gap 102, in other words, in a direction perpendicular to the axial direction of the pipe 1.

Then, if an adhesive tape 15 as shown in FIG.
2 can be covered.

In the example shown in FIG. 3, if a slight pressure is applied to the heat insulating material 2 when wrapping the sheathing material 10, both ends of the sheathing material 100 in the width direction can be closed without forming the gap 102 as shown in FIG. You can match them, and you can also make them overlap.

Furthermore, if a material having the same width d as the outer periphery of the heat insulating material 2 wrapped around the pipe 1 is used as the exterior material 10,
Without applying the above-mentioned suppression, both ends of the exterior material 10 in the width direction can be butted against each other without leaving a gap 102 as shown in FIG. 3.

Note that the fastener is not limited to the above-mentioned stapler, and any fastener may be used as long as it has a stapler-like function.

(Effects of the Invention) According to the method of covering a pipe with a heat insulating material according to the present invention detailed above, after wrapping the exterior material prepared in advance over the heat insulating material wrapped around the pipe, a fastener such as a stapler is used. Since the coating work is completed by simply stopping the machine, there are fewer steps and less time and effort, and therefore the time and cost of the coating work can be significantly reduced.

In addition, since the wrapping of the above-mentioned exterior material only needs to be wrapped once in the axial direction of the pipe, it is much easier to wrap than the conventional method of winding cotton tape in a spiral shape on a highly rigid cardboard. It is extremely easy to work with.

Furthermore, unlike the previously proposed tape shown in FIG. 5, the method according to the present invention does not fix the exterior material with an adhesive layer, making the fixing work extremely easy.

Moreover, the method according to the present invention can be used to cover piping with a sheet coated with the previously proposed foam coating agent.
There is no need to heat the coating agent to foam it after wrapping it around the piping, and the coating operation can be performed extremely easily at any site.

In addition, paper, cloth or synthetic resin adhesive tape,
Alternatively, when pasting the above exterior material cut into narrow widths, it is possible to prevent the deterioration of the aesthetic appearance and injury to people due to the fasteners, as well as to prevent the above exterior material from being wrapped around the insulation material. If a gap is created between both ends of the exterior material in the width direction, this gap can be covered.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing an example of the method of covering piping with a heat insulating material according to the present invention, Fig. 2 is an explanatory diagram showing an example of the exterior material used in the method, and Fig. 3 is an explanatory diagram showing an example of the sheathing material used in the method. FIGS. 4 and 5 are explanatory diagrams showing other embodiments, and FIGS. 4 and 5 are explanatory diagrams showing conventional examples. ... Piping 2 ... Insulation material 0.
... Exterior material 11 ... Cardboard 2 ... Adhesive 3 ... Paper, cloth or synthetic resin layer 4 ... Stapler (fastener)

Claims (2)

[Claims] (1) After wrapping a heat insulating material around the pipe, wrap an exterior material made by laminating any one of paper, cloth, and synthetic resin layers on cardboard with an adhesive in the axial direction of the pipe, and wrap the exterior material in the axial direction of the pipe. A method of covering piping with a heat insulating material, which comprises fixing the overlapping or abutting portions of the materials with a fastener such as a stapler. (2) The pipe according to claim 1, characterized in that paper, cloth, or synthetic resin adhesive tape, or a cut piece of the exterior material is pasted on the portion fixed by the stopper. How to cover insulation material.