JP3039568U - Insulation cover - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] An object of the present invention is to provide a heat insulating cover having excellent workability. SOLUTION: The heat insulation cover 1 has a central hole 20 through which the pipe 6 is inserted and a slit 21 extending in the axial direction P that forms an opening 210 for inserting the pipe 6 into the central hole 20 and has a cylindrical heat insulating body that covers the pipe 6. 2 and one end 30 in the circumferential direction S which is integrally fixed to the outer peripheral surface 22 of the heat insulator 2 has the slit 2
1. A reinforcing sheet 3 having a connecting piece 32 protruding from one end 31 that divides 1 and an inner side surface 320 of the connecting piece 32 on the center side.
And a release paper 5 including a release part 50 covering the adhesive layer 4 and an operation part 51 integrally formed with the release part 50 and extending in a direction away from the adhesive layer 4. It is characterized by

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a heat insulating cover that insulatedly covers a pipe, a valve, a pipe connection, and the like.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 10, for example, a heat insulating cover 1a which is used by being attached so as to cover the outer peripheral surface 60 of the pipe 6 is known as a means for thermally insulating and protecting the pipe 6 for flowing the heat medium R. There is. The heat insulating cover 1a is integrally fixed to a cylindrical heat insulating body 2a having a slit 21a extending along the axial direction P and covering the pipe 6 so as to cover the pipe 6, and an outer peripheral surface 22a of the heat insulating body 2a. The reinforcing sheet 3a has a connecting piece 32a longer than the length, and the double-sided tape 7 is attached to the back surface side of the connecting piece 32a of the reinforcing sheet 3a along the axial direction P.

When the heat insulating cover 1a is attached to the pipe 6a, the slit 21a of the heat insulator 2a is opened in the circumferential direction shown by the arrows S and S, and the heat insulator 2a moves so as to cover the outer peripheral surface 60 of the pipe 6a ( (Direction of arrow Y in FIG. 10). After that, the release paper 70 of the double-sided tape 7 is peeled off, and the connecting piece 31a is indirectly bonded to the outer peripheral surface 22a side of the heat insulating body 2a at the position where it is extended in the circumferential direction to close the slit 21a by the adhesive force of the double-sided tape 7. The heat insulating cover 1a is fixed and held on the pipe 6 by bonding.

[0004]

[Problem to be solved]

 However, the conventional heat insulating cover 1a has the following problems. (1) When peeling the release paper (release paper) 70 of the double-sided tape 7 when the worker wears work gloves (work gloves) at the time of working at the site where the heat insulation cover 1a is attached to the pipe 6. However, it cannot be operated quickly and its workability is low. (2) Since the double-sided tape 7 is manually attached to the back surface of the connecting piece 31a of the reinforcing sheet 3a during the manufacturing of the heat insulating cover 2a, the workability thereof is low. (3) Therefore, it is possible to automate the work of sticking the double-sided tape 7 with the sticking device, but there is a limit to the size of the double-sided tape 7, and it is necessary to replace it with a new one, for example, in about 50 m, and it will Continuous work is not possible and workability is low.

The present invention has been made in view of the above problems, and an object thereof is to provide a heat insulating cover having excellent workability.

[0006]

[Means for Solving the Problems]

 The heat insulating cover according to claim 1, wherein the heat insulating cover has a cylindrical heat insulator having a central hole through which the pipe is inserted and a slit extending in the axial direction forming an opening for inserting the pipe into the central hole, and covering the pipe, and an outer peripheral surface of the heat insulator. A reinforcing sheet having a connecting piece which is integrally fixed to one end of the connecting piece and has at least one end in the circumferential direction protruding from one end that defines the slit, an adhesive layer formed on the inner side surface of the connecting piece on the center side, and the adhesive layer And a release paper formed of an operation portion integrally formed with the release portion and covering the release portion and extending in a direction away from the adhesive layer.

According to a second aspect of the present invention, in the heat insulating cover according to the first aspect, the adhesive layer is formed on a tip side of the connecting piece, and the operation portion is provided on a side of the connecting piece that is opposite to the tip side. It extends. According to a third aspect of the present invention, in the heat insulating cover according to the first aspect, the operation portion is bent so as to face the mold releasing portion.

According to a fourth aspect of the present invention, in the heat insulating cover according to the third aspect, a part of the adhesive layer has an exposed portion which is not covered with the release paper, and the exposed portion defines the slit. It is directly or indirectly joined to the outer peripheral surface of the heat insulating body on the opposite side and temporarily fixed so as to close the slit.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The tubular heat insulator is made of an aggregate having a predetermined thickness made of heat insulating fibers such as glass wool and rock wool, and heat insulating materials such as Styrofoam. It is made of an effective material to cover the pipe and insulate it. The slit extending in the axial direction of the heat insulator can be formed as one or more slits in the circumferential direction of the heat insulator. The slit cross-sections the heat insulator in a direction intersecting with the axial direction.As viewed from the axial direction, the slit has an inclined line shape, a straight line passing through the center of the center hole, or a halfway through the straight line. One having a step can be used.

As the reinforcing sheet, aluminum kraft, aluminum glass cloth, polyethylene, etc., a laminated sheet having a plurality of laminated layers, a sheet having aluminum vapor-deposited on its surface, or the like can be used. The connecting piece of the reinforcing sheet protrudes from one end that defines the slit, and with the tubular insulation target member housed in the center hole of the heat insulator, directly on the outer peripheral surface of the heat insulator on the opposite side that defines the slit. Alternatively, it is indirectly bonded (the surface of the reinforcing sheet or the skin sheet formed on the outer peripheral surface of the heat insulator) with an adhesive layer to close the slit.

When the pressure-sensitive adhesive layer is formed on the inner surface of the reinforcing sheet on the center side, it can be automatically applied to a desired coating thickness, coating width, and coating shape by using various coating devices. . As the adhesive layer, for example, a hot melt adhesive, an emulsion adhesive, an organic solvent adhesive, other adhesives, and the like can be used.

The release paper is composed of a release section that covers the adhesive layer and an operation section that is integrally formed with the release section and that extends in a direction away from the adhesive layer. The release part is a region that covers the adhesive layer and can be peeled from the adhesive layer. The operation unit is an area that can be picked by a worker and serves as a picking allowance. For example, the operation portion extends in a direction away from the width direction of the adhesive layer formed in a strip shape and is set to have a width that can be picked by an operator, or separated in the longitudinal direction of the adhesive layer formed in a strip shape. The length can be set so that it extends in the direction and can be picked by the operator.

A preferable width or length is a value that allows the operating portion to be picked up while wearing work gloves. By bending the operation part so as to face each other with respect to the mold release part, it is possible to make it easier for an operator to pick up the mold release part from the adhesive layer at the work site.

By forming a part of the adhesive layer as an exposed part not covered with the release paper, and directly or indirectly joining this exposed part on the outer peripheral surface of the heat insulating body on the side opposite to the slit. It can also be temporarily fixed so that the slit is closed. In this case, it is easy to roll the heat insulation cover into a tubular shape for transportation.

[0015]

【Example】

 An embodiment of the heat insulating cover of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the heat insulating cover 1 of Example 1 includes a cylindrical heat insulating body 2, a reinforcing sheet 3, a hot melt adhesive layer 4, and a release paper 5. The tubular heat insulator 2 is made of heat insulating fibers such as glass wool and rock wool, and has a wall thickness t1 of about 20 to 50 mm, a length L1 along the axial direction P of about 1000 mm, and a pipe 6 (see FIG. 1). It has a central hole 20 to be inserted and a slit 21 extending in the axial direction P forming an opening 210 for inserting the pipe 6 into the central hole 20, and adiabatically covers the side peripheral portion 60 of the pipe 6 through which the heat medium R flows. It is a thing.

As shown in FIG. 2, the reinforcing sheet 3 is integrally fixed to the outer peripheral surface 22 of the heat insulating body 2 by an adhesive 23, and at least one end 30 in the circumferential direction S has the slit of the heat insulating material body 2. It has a connecting piece 32 that can extend from one end 31 that divides 21 to the side projecting. The connecting piece 32 has flexibility, for example, a state where it passes over the slit 21 from the one end 30 and covers the reinforcing sheet 3 on the one end 31 side, or from the one end 30 toward the central hole 20 of the heat insulator 2 the slit 21. It can be arranged in a state of being folded inward or in a state of being bent in a direction of being inverted by about 180 degrees from one end 30. In the present embodiment, a case will be described in which it is arranged in a state of being bent at a bending width w of about 35 to 40 mm in a direction of reversing about 180 degrees from one end 30.

The hot melt adhesive layer 4 has an inner peripheral surface 320 facing the central hole 20 of the heat insulator 2 when the connecting piece 32 of the reinforcing sheet 3 is located at a position extending from the one end 30 to the side projecting in the circumferential direction S 2. It is formed by the hot-melt pressure-sensitive adhesive applied to. The coating width w1 of the hot melt adhesive layer 4 is about 15 mm. The release paper 5 is composed of a release part 50 covering the hot melt adhesive layer 4 and an operating part 51 formed integrally with the release part 50 and extending in a direction away from the hot melt adhesive layer 4. The release paper 5 has a width w2 of about 23 mm, and the operating portion 51 has a width w3 of about 8 mm. As shown in FIG. 3, the hot-melt adhesive layer 4 has a coating width w1 of the heat insulating body 2 in a region corresponding to the inner peripheral surface 320 of the connecting piece 32 of the reinforcing sheet 3 with a coating width w1. It is applied in a strip shape having a length L2 equal to the length L1. After this coating, the release paper 5 continuously fed out from the roll body 5a wound in a roll shape of 500 to 1000 m covers the hot melt adhesive layer 4 and is equal to the coating length L2. It is placed with a length L3.

In this case, the release paper 5 is formed with an operating portion 51 having a width w3 that does not cover the hot melt adhesive layer 4 in the width direction thereof, but the invention is not limited to this and the operating portion 51 may be used instead. Alternatively, an unillustrated longitudinal operating portion longer than the strip-shaped length L2 of the hot-melt adhesive layer 4 may be formed. (1) According to the heat insulating cover 1a of the embodiment configured as described above, the heat insulating body 2 is inserted through the slit 21 into the outer periphery 60 of the pipe 6 requiring heat insulation at the site of use thereof, In addition, in the case where the mold is mounted so as to be covered with the inner peripheral surface of the center hole 20, the operator can remove the mold release part 50 by a simple operation only by picking and pulling the operation part 51 of the mold release paper 5 as shown in FIG. The hot melt adhesive layer 4 can be quickly peeled off, and the hot melt adhesive layer 4 of the connecting piece can be exposed.

That is, since the heat insulating cover 1 has the operation portion 51 formed on the release paper 5, even if the work bag (work gloves) 8 is worn by the operator at the site of use, The operation part 51 of the release paper 5 can be pinched, and the release paper 5 can be peeled off much faster than the conventional operation of peeling the release paper of the double-sided tape, and the workability thereof can be improved. Further, the connecting piece 32 exposing the hot-melt adhesive layer 4 only presses in the center direction at the front position in the circumferential direction S across the slit 21 of the heat insulator 2, and the adhesive action of the hot-melt adhesive layer 4 works. The state in which the heat insulator is fixed to the outer circumference 60 of the pipe 6 can be maintained (see FIGS. 5 and 6). (2) When the hot-melt adhesive layer 4 is formed on the inner surface 320 of the reinforcing sheet 3 on the center side of the connecting piece 32 during the production of the heat insulating cover 1 (see FIG. 3), the purpose is to use a coating device (not shown). The coating thickness, coating width, and coating shape can be automatically applied, improving workability. (3) When the release part 50 of the release paper 5 is attached so as to cover the hot-melt adhesive layer 4 during the production of the heat insulating cover 1 (see FIG. 3), an attaching device (not shown) can be used. The release paper 5 is wound into a roll in a unit of 500 m to 1000 m and is loaded into the sticking device to allow the sticking work automatically and continuously for a long time, thus improving workability.

(Modification) As shown in FIG. 7 as Modification 1 of the release paper 5 of the embodiment, the release section 50 faces the operation section 51 so that the release section 50 is located at the center of the release paper 5 in the width direction. It is also possible to use the release paper 5a having the operating portion 52 integrally formed with the release portion 50 and having a width w4 of about 8 mm. Also in this case, the same effect as that of the above embodiment can be obtained.

As a second modified example of the release paper 5 of the embodiment, as shown in FIG. 8, a release paper 5b in which only the operation section 52 of the operation section 51 and the operation section 52 of the first modification is formed is used. Can do it Also in this case, the same effect as that of the above embodiment can be obtained. As a modified example 3 of the release paper 5 of the embodiment, as shown in FIG. 9, the release portion 50 of the release paper 5 is not formed and the width w5 where a part of the hot melt adhesive layer 4 is exposed is about 2 mm. It is also possible to use the release paper 5c that covers the hot melt adhesive layer 4 so as to form the area. In this case, the same effect as that of the above-described embodiment can be obtained, and the slit 21 can be temporarily fixed so as to be closed by the partially exposed hot-melt adhesive layer 4, so that the slit 21 is prevented from opening. In addition, the outer circumference of the heat insulating cover 1 does not have to be bound with tape or a string, and it is easy to carry.

[0022]

[Effect of the invention]

 The heat insulating cover of the present invention has a reinforcing sheet integrally fixed to the outer peripheral surface of a cylindrical heat insulator, and has a connecting piece at least one end in the circumferential direction protruding from one end defining a slit of the heat insulator. An adhesive layer is formed on the inner side surface of the connecting piece toward the center, and the release paper is composed of a release part that covers the adhesive layer and an operation part that is integrally formed with the release part and extends in a direction away from the adhesive layer. It is equipped with. (1) Therefore, according to the heat insulation cover, at the site of use, the heat insulator is inserted into the outer circumference of the pipe requiring heat insulation through the slit and covered with the inner peripheral surface of the center hole. When mounting, the operator can quickly peel off the release part from the adhesive layer and expose the adhesive layer of the connecting piece by a simple operation of simply picking and pulling the operation part of the release paper.

That is, since the heat insulating cover has the operation portion formed on the release paper, the operation of the release paper can be performed even when the worker is wearing a work bag (work gloves) as an operation at the work site. The part can be pinched, and the peeling operation of the release paper can be performed much faster than the conventional operation of peeling the release paper of the double-sided tape, and the workability can be improved. In addition, the connecting piece with the adhesive layer exposed only presses in the center direction at the front position in the circumferential direction which crosses the slit of the heat insulator, and the adhesive action of the adhesive layer works to fix the heat insulator to the outer periphery of the pipe. Can hold (2) When an adhesive layer is formed on the inner surface of the reinforcing sheet in the direction of the center of the connecting piece during the production of the heat insulating cover, the application device is used to automatically obtain the desired coating thickness, coating width, and coating shape. It can be applied, improving workability. (3) A sticking device can be used when sticking the release part of the release paper so as to cover the adhesive layer at the time of manufacturing the heat insulating cover. The release paper, which is rolled up in a unit of 500 m to 1000 m, is loaded into the sticking device and can be stuck automatically and continuously for a long time, which improves workability.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a heat insulating cover of Example 1 and a tube to which the heat insulating cover is attached.

FIG. 2 is an enlarged perspective view showing an enlarged main part of the heat insulating cover in FIG.

FIG. 3 is a perspective view showing a process of forming a hot melt adhesive layer on the connecting piece of the reinforcing sheet of the heat insulating cover in FIG. 1 and adhering a release paper to the hot melt adhesive layer.

FIG. 4 is an enlarged side view showing a state in which the release paper is peeled off from the connecting piece of the reinforcing sheet after the heat insulating cover in FIG. 2 is attached to the pipe.

FIG. 5: The release paper is peeled off and the hot melt adhesive layer is exposed so that the slit opening is closed and the circumferential portions on both sides of the slit are connected by adhesion, and the heat insulating cover is fixed and held on the tube. FIG.

FIG. 6 is an enlarged side view showing a main part of the heat insulating cover in FIG. 5 in an enlarged manner.

FIG. 7 is an enlarged side view showing how to use release paper with the heat insulation cover of Modification 1.

FIG. 8 is an enlarged side view showing how to use a release paper with a heat insulating cover according to a modified example 2.

FIG. 9 is an enlarged side view showing how to use release paper with the heat insulating cover of the third embodiment.

FIG. 10 is a perspective view showing a conventional heat insulating cover and a tube to which the heat insulating cover is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Thermal insulation cover 2 ... Cylindrical heat insulating material 3 ... Reinforcement sheet 31 ... Connecting piece 4 ... Hot melt adhesive layer 5, 5a, 5b, 5c ... Release paper 50 ... Release part 51 covering hot melt adhesive layer 51 ... Worker Operation part to be picked up when peeling off ... Pipes to be insulated

Claims (4)

[Utility model registration claims] 1. A tubular heat insulator having a central hole through which a pipe is inserted and a slit extending in the axial direction forming an opening for inserting the pipe into the central hole, and covering the pipe, and being integral with an outer peripheral surface of the heat insulator. A reinforcing sheet having a connecting piece that is fixed to at least one end in the circumferential direction and protrudes from one end that defines the slit, an adhesive layer formed on the inner side surface of the connecting piece on the center side, and a separating layer that covers the adhesive layer. A heat-retaining cover comprising: a release paper comprising a mold portion and an operation portion integrally formed with the release portion and extending in a direction away from the adhesive layer. 2. The heat insulating cover according to claim 1, wherein the adhesive layer is formed on a tip side of the connecting piece, and the operating portion extends to a side of the connecting piece which is opposite to the tip side. 3. The operation section is bent so as to face each other with respect to the release section.
Insulated cover described. 4. A part of the pressure-sensitive adhesive layer has an exposed portion which is not covered with the release paper, and the exposed portion directly or on the outer peripheral surface of the heat insulating body on the opposite side defining the slit. The heat insulating cover according to claim 1, wherein the heat insulating cover is indirectly joined and temporarily fixed so as to close the slit.