JPH0989190A - Heat retaining material coating sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating material able to apply a coating material onto a bent part of a pipe regardless of the difference of the skill of operators, and able to be easily handled. SOLUTION: In a sheet provided with odd numbers of coating flaps 3 on both sides 4 of a band-like main body flap 2 having the specified width, each one side of the coating flaps 3a on both ends are formed of a straight line continuously extending from the end side 5 of the main body flap 2. The other side of the coating flap is formed into a shape of the gentle base of a mountain, the one side shape and the other side shape of the coating flap 3b on the center part form the symmetrical shape and the shape of the gentle base end of a mountain, and the tip part is narrower than the boundary part between the coating flap and the main body flap 2. The other coating flaps 3c, 3d form the shapes of the gentle base end of a mountain in which each one side shape and each other side shape are different from each other, and their tips are narrower than the boundary part between the coating flap and the main body flap 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet for covering a heat insulating material for piping of fluid such as cooling water and hot water.

[0002]

2. Description of the Related Art Cooling water inside and outside buildings such as factories
There is a case where a heat insulating material is wrapped around a pipe for fluid such as hot water to perform heat insulating and heat insulating treatment. In this case, in order to protect the heat insulating material covering the pipe, the above heat insulating material is used by using an auxiliary material for holding the heat insulating material in the pipe and a covering material such as an exterior material for shielding radiant heat from the outside and for decoration. It is necessary to coat The types of exterior materials and auxiliary materials are specified by the position where the pipes are located, and the following are examples. Examples of exterior materials include cotton cloth, aluminum glass cloth, asphalt tape, colored zinc iron plate, aluminum plate, stainless steel plate, etc., and auxiliary materials include iron wire, base paper, adhesive tape, polyethylene film, waterproof linen cloth, etc. To be

These coating materials are coated on the piping in the order specified by the heat insulating material and the installation location of the piping.
When performing this covering work, a colored zinc iron plate, an aluminum plate, a stainless steel plate, etc. are formed in a shape to be covered in advance and used for the covering work. The sheet-like covering material such as cotton cloth, aluminum glass cloth, base paper, adhesive tape, polyethylene film, and waterproof linen cloth is wound into a heat insulating material. At this time, the heat insulating material in the straight pipe portion can be easily wound, but it is difficult to wind the heat insulating material in the bent portion of the pipe in close contact with the tape, especially on the inner curved side. . If they cannot be wound in close contact with each other, the tape easily peels off from them, resulting in difficulty in retaining the heat insulating material.

On the other hand, an operator who winds the tape makes a notch as necessary, removes the remaining portion of the tape on the inner curved side, and tightly adheres the tape to the tape to solve the problem such as the fray of the tape. ing.

Further, instead of the above-mentioned tape as the heat insulating material at the bent portion of the pipe, a plurality of pieces of covering material having different shapes cut into a shape adaptable to a curved surface are attached to the heat insulating material at the bent portion. Then, there is also known a method in which a covering material is closely attached and wound (see Japanese Utility Model Laid-Open No. 5-40697).

[0006]

However, the method of winding the tape by the operator has different results depending on the skill of the operator, and there are cases in which the tape can be wound in close contact and cases in which it cannot be wound in close contact. Further, the method disclosed in the above publication requires one set of a plurality of pieces of covering material having different shapes for each bent portion, and if one piece of this set is lost, the set is used. become unable. For this reason, storage at the work site becomes important, and handling tends to be troublesome.

Therefore, an object of the present invention is to provide a coating material capable of coating the bending portion of the pipe with the coating material regardless of the difference in the skill of the worker and having good workability.

[0008]

In order to solve the above-mentioned problems, a first invention is a heat insulating material covering sheet for a curved pipe portion of a pipe, wherein the sheet has both sides of a strip-shaped body piece having a required width. Each has an odd number of covering pieces, and the covering pieces at both ends of the covering piece have one side of the covering piece formed by a straight line continuous from the end side of the main body piece. The other side of the piece has a gentle mountain hem shape, and the cover piece at the center of the above-mentioned cover pieces has a shape in which the shape of the one side and the shape of the other side are symmetrical with respect to each other. Forming a mountain hem, the tip of which is narrower than the boundary between the covering piece and the body piece, and the remaining covering pieces among the covering pieces are the shape of one side and the other side. Form a gentle mountain hem with different shapes, and its tip part is the covering piece and the main body piece. It is narrower than the boundary part, and the position of the tip part is closer to the side opposite to the central part covering piece side from the center of the boundary part between the covering piece and the body piece, and the covering pieces at the both ends. The shape of the one side of the central coating piece on the side and the shape of the one side of the coating piece adjacent to the coating pieces on both ends of the both end coating piece sides are the same and other than the both ends of the coating piece. The covering piece is in contact with a covering piece other than the both end portions adjacent to the covering piece for a predetermined length from the main body piece, and the tip end direction is not in contact with the adjacent covering piece, and the covering piece of the sheet is The body has a symmetrical shape with respect to the center of the center piece as a reference line, and has a symmetrical shape with respect to the center of the center piece as a reference line, and the sheet has a covering material on the surface layer and an adhesive layer on the back surface and protects it. It is composed of release paper.

A second aspect of the present invention is a heat insulating material covering sheet for a bent pipe section, wherein the sheet has an odd number of covering pieces on one side of a strip-shaped main body piece having a required width. The covering pieces at both ends of the covering piece have one side of the covering piece formed by a straight line continuous from the end side of the main body piece, and the other side of the covering piece has a gentle mountain hem shape. The cover piece at the center of the above-mentioned cover pieces has a gently sloping mountain hem shape in which the shape of one side and the shape of the other side are symmetrical to each other, and the tip portion thereof It is thinner than the boundary portion between the piece and the main body piece, and the remaining covering piece of the covering piece forms a gentle mountain hem shape in which the shape of the one side and the shape of the other side are different, The tip part is thinner than the boundary part between the covering piece and the body piece, and The position of the minute is closer to the side opposite to the central covering piece side from the central position of the boundary portion between the covering piece and the main body piece, and one side of the central covering piece side of the covering pieces at the both ends. The shape and the shape of the one side of the coating piece adjacent to the coating piece of the both end portions are the same, and the coating pieces other than the both end portions of the coating piece have the both end portions adjacent thereto. Other than the cover piece and a predetermined length from the main body piece, but the tip direction from it is not in contact with the adjacent cover piece, the cover piece of the sheet, the center of the cover piece of the central portion is the reference line. The sheet is composed of a cover material on the surface layer, an adhesive layer on the back surface, and a release paper for protecting the same.

Further, a cut may be provided on the side of the strip-shaped main body piece of the release paper of the heat insulating material covering sheet.

Since the covering sheet of the present invention has an odd number of covering pieces on both or one side of the strip-shaped main body piece having a required width, the covering method can be carried out by the following method. . First, the main body piece is attached to the central portion of the outer curved portion of the heat insulating material in the bent portion of the pipe, the covering pieces at both ends thereof are attached along the end portions of the bent portion, and then the central coating is applied. The piece is attached to the bent portion. Subsequently, among the unattached covering pieces, the covering piece located in the center is successively stuck. By sticking in this order, the heat insulating material of the bent portion can be easily and accurately covered.

When a covering sheet having a covering piece only on one side of the main body piece is used, the center portion of the outer curved portion of the heat retaining material in the bent portion of the pipe to the center portion of the inner bay portion is used. It is possible to attach only one side to the top first. Therefore, when the heat insulating material is divided into two from the central portion of the outer curved portion to the central portion of the inner curved portion, the coating sheet is first attached to one of them, and then each is coated on the pipe, It is also possible to complete the coating with the other one using the above-mentioned coated piece. By doing so, it becomes possible to easily cover even if the pipe bending portion is near the wall and it is difficult to cover the covering material of the exterior material or the auxiliary material when the heat insulating material is covered first. .

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the cover sheet 1 according to the present invention has nine cover pieces 3 on both sides 4 of a strip-shaped main body piece 2. The cover pieces 3a at both ends of the cover piece 3 are formed by a straight line whose one side is continuous from the end side 5 of the body piece 2. In addition, the other one side has a gentle mountain hem shape, and the thickness is almost maintained at a predetermined length from the side 4 of the main body piece 2, but the thickness becomes smaller toward the tip. Has become.

The covering piece 3b is located in the central portion of the covering piece 3 of the covering sheet 1, and has a gentle mountain hem shape in which the shape of one side and the shape of the other side are symmetrical to each other. At a predetermined length from the side edge 4 of the main body piece 2, the thickness is almost maintained, but then the thickness becomes smaller toward the tip. That is, the tip portion of the covering piece is thinner than the boundary portion between the covering piece and the main body piece 2.

A covering piece 3c sandwiched between the covering pieces 3a and 3b,
3d and 3e have a gentle mountain hem shape in which the shape of one side is different from the shape of the other side, and the thickness is substantially maintained from the side 4 of the main body piece 2 to a predetermined length. However, it is tapered toward the tip. That is, the tip portion of the covering piece is thinner than the boundary portion between the covering piece and the main body piece 2. Further, the positions of the tip portions of these covering pieces are closer to the side opposite to the side where the covering piece 3b is located than the center position of the boundary portion between the covering piece and the main body piece 2.

Further, one side of the covering piece 3a on the side of the covering piece 3b and one side of the covering piece 3d on the side opposite to the covering piece 3b, that is, each one side of the boundary where the covering pieces 3a and 3d face each other. Have the same shape and both sides are completely in contact with each other.

Further, the covering pieces 3b to 3e are in contact with the adjacent covering piece at a predetermined length from the side edge 4 of the main body piece 2 in which the thickness of the covering piece is substantially maintained. Since each of them is thin toward the tip, it is not in contact with the adjacent covering piece.

Furthermore, in the covering sheet 1, the covering pieces 3 are symmetrical with respect to the center of the body piece 2 as a reference line, and the covering pieces 3 are symmetrical with respect to the center of the covering piece 3b. Has become.

Another covering sheet 11 according to the present invention is
As shown in FIG. 2, 9 is attached to one side 14 of the strip-shaped body piece 12.
It has a cover piece 13 of the book. The covering pieces 13a at both ends of the covering piece 13 are such that one side thereof is the end side 15 of the main body piece 12.
It is formed by a continuous straight line from. In addition, the other one side has a gentle mountain hem shape, and the side 1 of the body piece 12
From 4 to a predetermined length, the thickness is almost maintained, but then it becomes thinner toward the tip. That is, the tip portion of the covering piece is thinner than the boundary portion between the covering piece and the main body piece 2.

The covering piece 13b is located in the central portion of the covering piece 13 of the covering sheet 11, and has a gentle mountain hem shape in which the shape of one side and the shape of the other side are symmetrical to each other. At a predetermined length from the side edge 14 of the main body piece 12, the thickness is almost maintained, but then the thickness becomes smaller toward the tip.

Cover piece 1 sandwiched between cover pieces 13a and 13b
3c, 13d and 13e have a gentle mountain hem shape in which the shape of one side is different from the shape of the other side. Almost maintained, but then taper toward the tip. That is, the tip portion of the covering piece is thinner than the boundary portion between the covering piece and the main body piece 2. Also,
The positions of the tip portions of these covering pieces are closer to the side opposite to the side where the covering piece 3b is located than the center position of the boundary portion between the covering piece and the main body piece 2.

Further, one side of the covering piece 13a on the side of the covering piece 13b and one side of the covering piece 13d on the side opposite to the covering piece 13b,
That is, each one side of the boundary where the covering pieces 13a and 13d face each other has the same shape, and both sides are completely in contact with each other.

Further, the covering pieces 13b to 13e are in contact with the adjacent covering piece at a predetermined length from the side edge 14 of the main body piece 12 in which the thickness of the covering piece is substantially maintained. Since each of them is thin toward the tip, it is not in contact with the adjacent covering piece.

Furthermore, the covering sheet 11 is the covering piece 1.
The covering pieces 3 are symmetrical with each other with the center of 3b as a reference line.

The surface layers of the covering sheet 1 and the covering sheet 11 are for the purpose of protecting the heat insulating material covering the pipes, as an auxiliary material for holding the heat insulating material in the pipes, and for shielding and radiating heat from the outside. Among the covering materials such as the exterior material, the sheet-like one is provided. Examples of exterior materials include cotton cloth, glass cloth, aluminum glass cloth, and aluminum foil paper, and auxiliary materials include base paper, adhesive tape such as vinyl tape and anticorrosion tape, plastic tape such as polyethylene film, and waterproof linen cloth. Etc.

Adhesive layers are provided on the back layers of the cover sheet 1 and the cover sheet 11 to bond the sheets to the heat insulating material. The adhesive used in the adhesive layer may be any adhesive as long as it can bond the heat insulating material to the cover sheet 1 and the cover sheet 11, and depending on their materials, a thermoplastic adhesive or a thermosetting adhesive may be used. Can be selected and used. A release paper is provided on the adhesive layer to protect the adhesive layer, and when the adhesive layer is attached to the heat insulating material, the release paper is peeled off and attached to the heat insulating material.

As shown in FIG. 3, this release paper is provided with notches 33 on both sides 4 of the strip-shaped main body piece 2 of the cover sheet 1 and the side edges 14 of the strip-shaped main body piece 12 of the cover sheet 11. There is. By the notch 33, the release paper 31 of the main body piece 2 part and the release paper 32 of each cover piece 3 part can be peeled off independently. That is, the main body piece release paper 32 can be independently peeled off from the main body piece 2, and the coated piece release paper 32a can be independently peeled off from the covering piece 3a. The same applies to the other covering pieces 3b to 3e. For this reason,
The cover sheet 1 can be easily attached to the heat insulating material.
Also, with respect to the covering sheet 11, similar release lines are provided on the backside release paper.

A predetermined material is used as the heat insulating material, and examples thereof include rock wool, glass wool, polystyrene foam and the like.

Next, a method of coating the heat insulating material on the bent portion of the pipe with the coating sheet 1 will be described.

As shown in FIG. 4A, both end portions 24, 2
The cover sheet 1 is provided on the central portion 22 of the outer curved portion of the bent portion on the outer bay side of the bent portion 21 of the heat insulating material where the angle formed by 4'is a right angle.
The release paper of the main body piece 2 is peeled off, and the central portions thereof are attached together. Next, the release papers of the covering pieces 3a at both ends are peeled off, and one side of the covering piece 3a formed by a straight line from the end side 5 of the main body piece 2 is connected to the side surface of the heat insulating material and the end surfaces 24, 2.
Attach along the edge of the boundary with 4 '. Then, the release paper of the central covering piece 3b is peeled off, and the covering piece 3a is adhered so that the sticking position is substantially in the middle between the covering pieces 3a already stuck. At this time, the three unattached covering pieces 3c, 3d, and 3e remain between the covering pieces already attached. Of these, the covering piece 3c located in the center is attached so as to be substantially in the center between the already-applied covering pieces 3a and 3b. Then, the remaining covering pieces 3d and 3e are sequentially adhered to adhere the entire covering sheet 1. FIG. 4B shows a state in which all the covering pieces 3 of the covering sheet 1 are stuck, and the covering pieces 3 are stuck without any gap while partially overlapping each other. In this way, by first sticking the covering pieces on both ends and then sequentially sticking the covering pieces corresponding to the center between the applied covering pieces, it is possible to easily and closely adhere without using any skill. Can be attached.

The coating method of the covering sheet 11 is the same as that of the covering sheet 1, and as shown in FIG. 5A, first, the central portion of the outer curved portion of the bent portion of the heat insulating material on the outer bay side of the bent portion 21. 22
Then, the release paper of the main body piece 12 of the covering sheet 11 is peeled off, and the central portions thereof are attached together. Then, as in the case of the covering sheet 1, the covering pieces 13 are separated into 13a, 13b, 13c.
And then 13d and 13e at the end. By this method, one side surface from the central portion 22 of the outer curved portion to the central portion 23 of the inner curved portion of the bent portion on the inner bay side can be attached with the covering sheet 11. By sticking the remaining side surfaces in the same manner, the entire heat retaining material can be stuck with the covering sheet. A state in which all the covering pieces 13 of the covering sheet 11 are attached is shown in FIG. 5B, and each covering piece 1
3 is partly overlapped, but is stuck without a gap. Even in such a case, by using the method described above, it is possible to easily adhere and adhere without requiring special skill.

Since the sticking method as described above is adopted, the number of the covering pieces 3 and 13 on one end side of the main body piece of the covering sheets 1 and 11 is not limited to nine, and may be an odd number. Among them, the preferable number is the number represented by the mathematical formula 2 ^{n + 1} +1 (n is a positive number), and the more preferable number is 5 or 9.

The auxiliary material for the bent portion of the pipe and the exterior material are attached to the heat insulating material arranged around the pipe made of steel pipe or copper pipe. The kind is the heat insulating material and the place where the pipe is arranged. Is determined by

When rock wool or glass wool, for example, is used as the heat insulating material, these are arbitrarily wrapped and held by an iron wire. Then, a predetermined auxiliary material is coated, and an exterior material is coated thereon. When a sheet-like material is used as the auxiliary material or the exterior material, the auxiliary sheet and the exterior sheet having the shape of the present invention can be easily attached. When the sheets are difficult to stick to the bent portion of the pipe, the auxiliary sheet and the exterior sheet,
Alternatively, it is also possible to adhere only the exterior sheet to a synthetic resin protective cover having an incision on the inner curved side so as to cover the bent portion, and cover the bent portion with the cover.

Also, when polystyrene foam is used as the heat insulating material, if the auxiliary sheet and the exterior sheet are attached to the bent portion of the pipe in the same manner as above, the auxiliary material and the exterior material can be easily attached. it can. Further, in the case of polystyrene foam, it is possible to divide the bent portion from the center portion of the outer curve to the center portion of the inner curve portion and to set both of them on the piping at the piping site. In such a case, an auxiliary sheet or exterior sheet having the shape of the covering sheet shown in FIG. 2 is attached to one of the divided bent portions in advance, and the remaining portion is shown in FIG. 2 after being set in the pipe. By adhering the auxiliary sheet or the exterior sheet having the shape of the covering sheet, it is possible to easily coat the auxiliary material or the exterior material on the wall side near the wall when it is difficult to place the auxiliary material or the exterior material.

[0037]

According to the present invention, since the strip-shaped main body piece having the required width has an odd number of coating pieces on one side or both sides, the main body piece is used as a heat insulating material for the bent portion of the pipe. It is attached to the central portion of the outer curved portion, the coating pieces at both ends thereof are attached along the ends of the bent portion, and then the uncoated central coating piece is continuously attached to the bent portion. Since they can be adhered in order, it is easy to determine the position where the covering piece is to be adhered, and the bending portion can be covered with the covering material accurately.

When a covering sheet having a covering piece only on one side of the main body piece is used, only one side of the bent portion can be attached first, so that the pipe bending Even if the portion is near a wall and the heat insulating material is coated first, and it is difficult to coat the exterior material or the auxiliary material, it is possible to easily coat the heat insulating material.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a cover sheet according to the present invention.

FIG. 2 is a front view showing another embodiment of the covering sheet according to the present invention.

FIG. 3 is an operation diagram showing how the release paper is peeled off from the cover sheet of FIG.

FIG. 4 (a) is a perspective view showing a state in which the covering sheet of FIG. 1 is attached to a bent portion, and (b) is a front view showing a bent portion to which the covering sheet of FIG. 1 is stuck.

5 (a) is a perspective view showing a state in which the cover sheet of FIG. 2 is attached to a bent portion, and (b) is a front view showing a bend portion in which the cover sheet of FIG. 2 is attached.

[Explanation of symbols]

 1 Cover Sheet 2 Main Body Piece 3 Cover Piece 4 Side 5 End Edge 11 Cover Sheet 12 Main Body Piece 13 Cover Piece 14 Side Edge 15 End Side 21 Bend Part 22 Outer Curved Part Central Part 23 Inner Curved Part Central Part 24, 24 'End Part 31 Main body one-sided release paper 32 Coated one-sided release paper 33 Notch

Claims (3)

[Claims] 1. A heat insulating material covering sheet for a curved pipe section of a pipe, wherein the sheet has an odd number of covering pieces on both sides of a strip-shaped main body piece having a required width. The covering piece of the part, one side of the covering piece is formed by a straight line continuous from the end side of the body piece, the other one side of the covering piece forms a gentle mountain hem shape, The covering piece at the center of the covering pieces has a gently sloping mountain hem shape in which the shape of the one side and the shape of the other side are symmetrical to each other, and the tip portion thereof is the covering piece and the body piece. Is thinner than the boundary part, and the remaining coated pieces of the above coated pieces form a gentle mountain hem shape in which the shape of the one side and the shape of the other side are different,
The tip portion is thinner than the boundary portion between the covering piece and the body piece, and the position of the tip portion is closer to the central covering piece side than the center of the boundary portion between the covering piece and the body piece. Close to the opposite side, the shape of the one side of the central coating piece side of the coating piece of both ends and the shape of the one side edge of the coating piece adjacent to the coating piece of both ends of the both end coating piece side. The covering pieces other than the both end portions of the covering piece are in contact with each other, and the covering pieces other than the both end portions adjacent thereto are in contact with each other for a predetermined length from the main body piece, and the tip end direction is adjacent to the adjacent covering piece. Are not in contact with each other, the covering piece of the sheet is symmetrical with the center of the main body piece as a reference line, and has a shape symmetrical with the center of the covering piece of the central portion as a reference line, and the sheet is Is it a covering material on the surface layer, an adhesive layer on the back surface, and release paper to protect it? Thermal insulation material covering sheet is constructed. 2. A heat insulating material covering sheet for a bent pipe portion of a pipe, wherein the sheet has an odd number of covering pieces on one side of a strip-shaped main body piece having a required width. The covering piece of the part, one side of the covering piece is formed by a straight line continuous from the end side of the body piece, the other one side of the covering piece forms a gentle mountain hem shape, The covering piece at the center of the covering pieces has a gently sloping mountain hem shape in which the shape of the one side and the shape of the other side are symmetrical to each other, and the tip portion thereof is the covering piece and the body piece. Is thinner than the boundary part, and the remaining coated pieces of the above coated pieces form a gentle mountain hem shape in which the shape of the one side and the shape of the other side are different,
The tip portion is thinner than the boundary portion between the covering piece and the body piece, and the position of the tip portion is closer to the central covering piece side than the center of the boundary portion between the covering piece and the body piece. Close to the opposite side, the shape of the one side of the central coating piece side of the coating piece of both ends and the shape of the one side edge of the coating piece adjacent to the coating piece of both ends of the both end coating piece side. The covering pieces other than the both end portions of the covering piece are in contact with each other, and the covering pieces other than the both end portions adjacent thereto are in contact with each other for a predetermined length from the main body piece, and the tip end direction is adjacent to the adjacent covering piece. The covering piece of the sheet has a symmetrical shape with the center of the covering piece of the central portion as a reference line, and the sheet has a covering material on the surface layer and an adhesive layer on the back surface and protects the same. A heat insulating material covering sheet made of a release paper. 3. The heat insulating material-coated sheet according to claim 1, wherein a side edge of the strip-shaped main body piece of the release paper has a notch.