JP2013234505A - Method for joining insulating panel, adhesive tape for use in the same, and insulating panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a joined state capable of maintaining stable airtightness over a long period of time by enabling both of synthetic resin-foamed boards 2 to be bonded together without being coated with an adhesive, when the synthetic resin-foamed boards 2 configuring an insulating panel 1 are joined together while butting against each other.SOLUTION: In an adhesive tape 6, a heating wire 8 generating heat by energization is arranged in a tape-like base material 7 made of a synthetic resin compatible with a synthetic resin constituting a synthetic resin-foamed board 2. The adhesive tape 6 is used to be sandwiched between butting parts of the synthetic resin-foamed boards 2, and the synthetic resin-foamed boards are joined together by melting the base material 7 by the passage of an electric current through the heating wire 8.

Description

  The present invention relates to a method for joining a heat-insulating panel, in which a heat-insulating panel composed of a synthetic resin foam plate alone or a synthetic resin foam plate provided with a surface material is brought into contact with each other by exposing exposed surfaces of the synthetic resin foam plates, and adhesion used therefor The present invention relates to a tape and a heat insulating panel provided with the adhesive tape.

  As a heat insulating panel used for heat insulation of a building, a panel made of a synthetic resin foam plate alone or a panel made of a synthetic resin foam plate provided with a surface material such as a metal plate is widely used. Joining of these heat insulation panels is generally performed by butting the flat exposed surfaces of the synthetic resin foam plates constituting the heat insulation panel, but in order to improve the airtightness, actual joining processing is performed on the butted portion, It is also known to connect the formed actual connecting groove and the actual connecting groove by fitting (see, for example, paragraph 0014 of Patent Document 1).

JP 2000-234416 A

  However, since joining by simply butting flat surfaces does not provide sufficient airtightness, it is difficult to apply to buildings that require high heat insulation, such as refrigeration or refrigerated warehouses.

  By the way, if the heat insulation panel is actually connected, the airtightness can be improved to some extent and the heat insulation effect can be enhanced. However, in the building where the above high heat insulation is required, a higher airtightness is required. For example, in external insulation of a refrigerated warehouse, if a gap is created between insulation panels, it not only becomes a heat transfer path, but moisture that has penetrated from it freezes inside the insulation panel, causing the insulation panel to peel off from the enclosure. As a result, the heat insulation effect is reduced. For this reason, in a building where high heat insulation is required, it is usual to extrude and fill the caulking material at the joint between the heat insulation panels to ensure high airtightness.

  However, the caulking material tends to deteriorate with time and has a problem of lack of reliability. Bonding between the synthetic resin foam plates of the heat insulation panel with an adhesive can provide a bonded state that can maintain stable airtightness over a long period of time. Work must be performed while paying attention to prevention of adhesion, prevention of adhesion of foreign matter to the coated surface, and butting within a limited time until curing after coating, and there is a problem of poor workability.

  The present invention has been made in view of the above-described conventional problems. When the synthetic resin foam plates constituting the heat insulation panel are brought into contact with each other and bonded to each other, the two can be bonded without applying an adhesive. Therefore, an object is to obtain a bonded state in which stable airtightness can be maintained over a long period of time.

For the above purpose, the first of the present invention is to join a heat insulating panel composed of a synthetic resin foam plate alone or a synthetic resin foam plate provided with a surface material, with the exposed surfaces of the synthetic resin foam plates butted together. In the method of joining the heat insulation panels,
An adhesive tape in which a heating wire that generates heat when energized is disposed in a tape-like base material composed of a synthetic resin compatible with the synthetic resin constituting the synthetic resin foamed plate is formed between the synthetic resin foamed plates. The present invention provides a method for joining heat insulating panels, which is sandwiched between butted portions and energized to melt the base material to join the heat generating wire.

In the first aspect of the present invention, a groove portion and a real portion for actual connection are formed at a butt portion between exposed surfaces of the synthetic resin foam plate, and the adhesive tape is sandwiched between the groove portion and the real portion. Energizing the exothermic wire after fitting with,
Preferably, the heating wire is energized for a predetermined time set by a timer.

  The second of the present invention is a synthetic resin foam board alone or a synthetic resin foam board when joining heat insulation panels composed of a synthetic resin foam board provided with a surface material, and is used for a heat insulation panel to be joined. A heating wire that generates heat by energization and melts the base material is disposed in a tape-like base material made of a synthetic resin compatible with the synthetic resin constituting the synthetic resin foam plate. The adhesive tape characterized by the above is provided.

  The second aspect of the present invention includes, as a preferable aspect, the heating wires are arranged in a zigzag manner in the width direction of the base material.

A third aspect of the present invention is composed of a synthetic resin foam plate alone or a synthetic resin foam plate provided with a surface material, and the synthetic resin foam plates are connected to the actual connecting groove formed on the synthetic resin foam plate. In the heat insulation panel that is joined by fitting the parts,
In a tape-like base material composed of a synthetic resin that is compatible with the synthetic resin constituting the synthetic resin foamed plate, an adhesive tape in which a heating wire that generates heat by energization and melts the description is disposed, It is one of the groove part and the real part that are fitted together, and is provided in a region that is sandwiched between the two when they are fitted together.

According to a third aspect of the present invention, when the adhesive tape is provided at least on the side surface of the real part, and the protruding length of the real part is longer than the depth of the groove part, the groove part and the real part are fitted together. The adhesive tape extends to the side surface of the base portion of the real part exposed through a gap formed in a joint portion between the synthetic resin foam plates;
A preferred embodiment includes that the synthetic resin constituting the synthetic resin foam plate and the synthetic resin constituting the base material of the adhesive tape are polystyrene.

  According to the present invention, the synthetic resin foam plates of the heat insulating panel can be bonded to each other simply by energizing the heat generating wire of the adhesive tape by sandwiching the adhesive tape at the butt portion, and stable airtightness can be maintained over a long period of time. A joined state can be obtained. Moreover, since the adhesive tape used by this invention is solid and is not a fluid like an adhesive agent, it is easy to handle and workability | operativity is also good.

  In particular, if the synthetic resin that constitutes the base material of the adhesive tape is the same as that of the synthetic resin foam plate, it can be bonded without sandwiching dissimilar materials between the synthetic resin foam plates. It is possible to approach the state where the foam plate is installed.

  Other effects will be described together with the description of the embodiment of the present invention.

It is a perspective view which shows an example of the heat insulation panel for walls which should be connected. It is a top view which shows an example of the adhesive tape which concerns on this invention. It is sectional drawing of the state which provided the adhesive tape in the groove part for actual connection formed in the exposed surface of the synthetic resin foam which comprises a heat insulation panel. It is sectional drawing of the state which inserted the real part for the actual connection formed in the exposed part of the synthetic resin foam which comprises another heat insulation panel in the groove part shown by FIG. It is sectional drawing of the state which pushed the joint material into the clearance gap between the two heat insulation panels which were actually connected and adhere | attached. It is sectional drawing which shows an example in the case of joining the heat insulation panel for walls, and the heat insulation panel for ceilings, (a) is a figure which shows the state before joining, (b) is a figure which shows the state after joining. It is sectional drawing which shows the 1st example of the fall prevention structure of an adhesive tape, (a) is a figure which shows the state before installation of an adhesive tape, (b) is a figure which shows the state after installation of an adhesive tape. It is sectional drawing which shows the 2nd example of the fall prevention structure of an adhesive tape. It is sectional drawing which shows the 3rd example of the fall prevention structure of an adhesive tape. It is sectional drawing which shows the 4th example of the fall prevention structure of an adhesive tape. It is sectional drawing which shows the 5th example of the fall prevention structure of an adhesive tape. It is sectional drawing which shows the preferable clamping state of an adhesive tape.

  The present invention will be further described below with reference to the drawings. In the drawings referred to below, the same reference numerals indicate the same components.

  A heat insulating panel 1 shown in FIG. 1 is composed of a synthetic resin foam plate 2 and a surface material 3 when the front and back surfaces of the synthetic resin foam plate 2 are covered.

  The synthetic resin foam plate 2 is formed of a thermoplastic synthetic resin foam. The material of the synthetic resin foam plate 2 is not particularly limited as long as it is a thermoplastic synthetic resin foam, but generally used is a polystyrene foam. The synthetic resin foam plate 2 is subjected to actual joining processing for joining together. That is, a groove 4 for actual connection is formed on one of the left and right side surfaces and one of the upper and lower side surfaces of the synthetic resin foamed plate 2, and the other of the left and right side surfaces and the other of the upper and lower side surfaces are connected to each other. A real part 5 is formed. This heat insulation panel 1 is for walls, and is connected by inserting the other real part 5 into one groove part 4 of two heat insulation panels 1 and 1 adjacent to each other on the left and right and top and bottom.

  As the surface material 3, a metal plate such as a colored iron plate or a galvalume steel plate is usually used, but wood, a synthetic resin plate, a cement plate, or the like may be used depending on the installation location. The surface material 3 is provided at least in a region excluding the groove 4 and the real part 5 of the synthetic resin foam plate 2, and the synthetic resin foam plate 2 is exposed in the groove 4 and the real part 5.

  In addition, although the heat insulation panel 1 shown by FIG. 1 is comprised by the synthetic resin foam board 2 which has the surface material 3, the joining object in this invention is not only what has such a surface material 3, but synthetic | combination. It may be constituted by the resin foam plate 2 alone.

  As shown in FIG. 2, the adhesive tape 6 used in the present invention has a heating wire 8 that generates heat when energized in a tape-like or belt-like substrate 7.

  The base material 7 is made of a thermoplastic synthetic resin that is compatible with the synthetic resin constituting the synthetic resin foam plate 2 so that adhesion to the synthetic resin foam plate 2 can be obtained. The synthetic resin constituting the base material 7 may be a synthetic resin different from the synthetic resin constituting the synthetic resin foam plate 2 as long as the synthetic resin is compatible with the synthetic resin constituting the synthetic resin foam plate 2, but has high attachment strength. The same synthetic resin is preferable because it is easy to obtain. When the synthetic resin foam plate 2 is a polystyrene foam that is widely used, the base material 7 is preferably made of polystyrene.

  The exothermic wire 8 generates heat by energization and melts the base material 7. A nichrome wire can also be used, but an iron chrome wire is preferable because it is inexpensive. The heating wire 8 is preferably arranged in a zigzag manner in the substrate 7 so that the entire substrate 7 can be heated as uniformly as possible. Although the heating wire 8 can be arranged in a zigzag manner in the length direction of the base material 7, even if the adhesive tape 6 is cut for adjusting the length, the heating wire 8 can be exposed from the cut portion and can be energized. Therefore, as shown in FIG. 2, it is preferable to arrange the base material 7 in a zigzag manner in the width direction. Further, both ends of the heating wire 8 are drawn out of the base material 7 as lead portions 9a and 9b for energization.

  The adhesive tape 6 is formed by, for example, thinly pouring a synthetic resin constituting the base material 7 into an elongated mold to form a base, setting a heating wire 8 on the base, and then again synthesizing the same as the base. It can be manufactured by pouring resin and covering the heating wire.

  Next, a joining method involving adhesion using the adhesive tape 6 will be described.

  When the heat insulation panel 1 to be joined is a product obtained by performing a real joining process on the synthetic resin foam plate 2, the adhesive tape is placed between the two when the actual joining groove 4 and the real part 5 are fitted together. 6 is provided. In the example shown in FIG. 3, the adhesive tape 6 is provided along the bottom of the groove 4. When the adhesive tape 6 is provided along the bottom of the groove 4, the width of the adhesive tape 6 is slightly larger than the width of the groove 4, and the adhesive tape 6 is pushed into the groove 4 to be provided. 6 is easily prevented from falling off the groove 4.

  As shown in FIG. 4, the real part 5 of the other heat insulating panel 1 to be joined is inserted into the groove part 4 provided with the adhesive tape 6. In this example, the protruding length of the real part 5 is longer than the depth of the groove part 4, and a gap 10 is formed at the joint part between the both heat insulating panels 1 and 1. The role of the gap 10 will be described later. Further, the lead portions 9 a and 9 b connected to the heating wire 8 of the adhesive tape 6 are extended out of the groove portion 4.

  In the state shown in FIG. 4, the lead portions 9a and 9b of the adhesive tape 6 are connected to a power source, the heating wire 8 is energized to generate heat, and the base material 7 is melted. Glue. When energization is performed for a predetermined time set in advance by a timer, a large number of heat insulating panels 1, 1,... Can be joined while simply and efficiently bonding the synthetic resin foam plates 2 together. It is preferable to remove the lead portions 9a and 9b after adhesion by energization.

  As described above, the gap 10 is formed in the joint portion between the two heat insulating panels 1 and 1 to be joined in this example. The joints of the two heat insulating panels 1 and 1 can be closely aligned so that the gap 10 does not occur. However, if the joint material 11 is fitted in the gap 10 as shown in FIG. 7 and the joint material 11 can form a double airtight structure, which is preferable. As the joint material 11, for example, a rubber-based rod-like material or the like can be used. The joint material 10 can be installed after joining the heat insulating panels 1 and 1 when the wall panel 1 constitutes a self-supporting wall and work can be performed from either the front or back side. However, when the heat insulation panels 1 are arranged along the building frame, at least the joint material 11 is installed in the gap 10 on the building side by sandwiching the heat insulation panels 1 and 1.

  Although the above example is a joining example of the heat insulation panels 1 for walls, as FIG. 6 (a), (b) shows, this invention is the heat insulation panel 1 for walls, and the heat insulation panel 1 for ceilings. It can also be applied to joining with '. On the surface (lower surface) of the synthetic resin foam plate 2 constituting the ceiling heat insulating panel 1 ′, a groove 4 for actual connection is formed at a position corresponding to the wall heat insulating panel 1. This is the same as the joining of the heat insulating panels for walls 1 described above except that the position of the groove 4 for joining the heat insulating panel for walls 1 in the ceiling heat insulating panel 1 'is not the side but the surface. That is, as shown in FIG. 6 (a), for example, an adhesive tape 6 is provided in the groove 4, and the real part 5 of the heat insulating panel 1 for walls is inserted into the groove 4 to the heating wire 8 in the same manner as described above. 6B, the base material 7 is melted, the joint material 11 is pushed into the gap 10 and joined, and the lead portions 9a and 9b are removed as shown in FIG. 6B. In addition, although not shown in figure, also in the heat insulation panel 1 'for ceilings, the synthesis | combination process for connecting the heat insulation panels 1' for adjacent ceilings is combined like the heat insulation panel 1 for walls. It is preferable to give to the side surface of the resin foam board 2. Of course, the present invention can also be applied to the joining of the heat insulating panels 1 'for the ceiling.

  The adhesive tape 6 is sandwiched between the bottom portion of the groove portion 4 and the top surface of the real portion 5, and is sandwiched between the side portion of the groove portion 4 and the side surface of the real portion 5. It can be sandwiched between the top surface and both side surfaces of the portion 5.

  The adhesive tape 6 can be temporarily clamped with a double-sided tape or the like, for example, at the site, but for example, when installed on the heat insulating panels 1 and 1 'when shipped from the factory, the work efficiency at the site is improved. Can be made. When the adhesive tape 6 is provided in advance, an attachment structure as shown in FIG. 7 or FIG.

  FIG. 7 shows a case where the adhesive tape 6 is provided along the bottom of the groove 4, and slits 12 are formed in the width direction of the groove 4 along both sides of the bottom of the groove 4, and the width of the adhesive tape 6 is increased. This is an example in which the width of the groove 4 is slightly wider. In this case, the adhesive tape 6 is slightly bent in the width direction and pushed into the groove 4, pressed against the bottom of the groove 4, and both side edges are inserted and held in the slits 12 on both sides, thereby preventing the drop from the groove 4. Can do.

  FIG. 8 shows an example in which the protruding portion 13 is formed by bending both side portions of the adhesive tape 6 in one direction when the adhesive tape 6 is provided along the bottom of the groove portion 4. In this case, it is possible to prevent the adhesive tape 6 from falling off by strongly pressing the protrusion 13 against the bottom of the groove 4 so as to bite into the bottom. The protruding portion 13 may protrude at a uniform height in the length direction of the adhesive tape 6, but can be easily pierced into the bottom of the groove portion 4 by forming it in a saw blade shape, for example. The protruding portion 13 can be easily formed by bending the side portion of the base material 7 portion of the adhesive tape 6.

  FIG. 9 shows a case where the adhesive tape 6 is provided along the side of the groove 4, and slits 12 are formed in the depth direction of the groove 4 along both sides of the bottom of the groove 4. This is an example in which the side edges of the tape 6 are inserted and held. In this case, if the pad 14 such as a sponge is placed in the groove 4 after the adhesive tape 6 is installed, the adhesive tape 6 is more difficult to drop off.

  FIG. 10 shows an example in which a U-shaped adhesive tape 6 is fitted into the groove 4 from the bottom side, and the U-shaped adhesive tape 6 can be securely fitted into the groove 4 to prevent the dropout. The adhesive tape 6 having a U-shaped cross section can be manufactured by reheating the flat adhesive tape 6 manufactured as described above, sandwiching it in a molding die, and forming it into a U-shaped cross section.

  FIG. 11 shows an example in which a U-shaped adhesive tape 6 is fitted into the real part 5 from the opening side, and the U-shaped adhesive tape 6 can be firmly fitted into the groove part 4 to prevent the dropout.

  As shown in FIG. 12, the adhesive tape 6 is sandwiched between the groove 4 and the real part 5 as shown in FIG. 12. The gap 10 is formed in the joint part when the groove 4 and the real part 5 are fitted together. It is preferable to carry out so that it can be visually observed from the outside via. That is, the adhesive tape 6 is provided at least on the side surface of the real part 5, and the protruding length of the real part 5 is longer than the depth of the groove part 4 so that the gap 10 is formed at the joint, and is exposed through the gap 10. The adhesive tape 6 is preferably extended to the side surface of the base portion of the real part 5 to be performed. By doing so, it is possible to visually check the melting state of the base material 7 by energizing the heating wire 8, and it becomes easy to prevent the occurrence of adhesion failure due to insufficient melting of the base material 7.

  Although the above description is about an example in which actual bonding is performed, the present invention does not perform actual bonding, but the side surfaces of the synthetic resin foam plate 2 and the side surfaces and surfaces of the synthetic resin foam plate are butted together. This can also be applied to the joining portion by sandwiching the adhesive tape 6 in the butt portion. However, it is preferable to apply it to the joint subjected to the actual joining process because not only the airtightness can be improved by the actual joining, but also the adhesive tape 6 is provided in the groove portion 4 so that the adhesive tape 6 can be easily prevented from falling off or shifting. .

DESCRIPTION OF SYMBOLS 1 Thermal insulation panel (for walls) 1 'Thermal insulation panel (for ceiling) 2 Synthetic resin foam board 3 Surface material 4 Groove part 5 Real part 6 Adhesive tape 7 Base material 8 Heating wire 9a, 9b Lead part 10 Crevice 11 Joint material 12 Slit 13 Protrusion 14 Filling

Claims (8)

In the heat insulating panel joining method in which the exposed surfaces of the synthetic resin foamed plates are brought into contact with each other, and the heat insulating panel composed of the synthetic resin foamed plate alone or the synthetic resin foamed plate provided with the surface material is joined.
An adhesive tape in which a heating wire that generates heat when energized is disposed in a tape-like base material composed of a synthetic resin compatible with the synthetic resin constituting the synthetic resin foamed plate is formed between the synthetic resin foamed plates. A heat insulating panel joining method, wherein the heat insulating wire is energized by being sandwiched between butted portions and melted to join the base material.   A groove part and a real part for actual connection are formed at the abutting part between the exposed surfaces of the synthetic resin foamed plate, and the groove part and the real part are fitted with the adhesive tape sandwiched therebetween, and then the heat generation The method for joining heat insulating panels according to claim 1, wherein energization of the wire is performed.   The method for joining heat insulating panels according to claim 1, wherein energization of the heating wire is performed for a predetermined time set by a timer.   The synthetic resin foam used for a heat insulating panel to be bonded, with the synthetic resin foamed plates used as a bonding target when the heat insulating panel composed of a synthetic resin foamed plate alone or a synthetic resin foamed plate provided with a surface material is bonded. An adhesive tape characterized in that a heating wire that generates heat by energization and melts the substrate is disposed in a tape-like substrate composed of a synthetic resin compatible with the synthetic resin constituting the plate .   The adhesive tape according to claim 4, wherein the heating wire is arranged in a zigzag manner in a width direction of the base material. It is composed of a synthetic resin foam plate alone or a synthetic resin foam plate provided with a surface material, and the synthetic resin foam plates are joined by fitting the actual part with the groove part for actual connection formed on the synthetic resin foam plate. Insulating panels
In a tape-like base material composed of a synthetic resin that is compatible with the synthetic resin constituting the synthetic resin foamed plate, an adhesive tape in which a heating wire that generates heat by energization and melts the description is disposed, A heat insulating panel, which is one of the groove part and the real part to be fitted, and is provided in a region sandwiched between the two when they are fitted together.   The adhesive tape is provided at least on the side surface of the real part, and the protruding length of the real part is longer than the depth of the groove part, and when the groove part and the real part are fitted together, the joint between the synthetic resin foam plates The heat insulating panel according to claim 6, wherein the adhesive tape extends to a side surface of the base portion of the real part exposed through a gap formed in the portion.   The heat insulation panel according to claim 6 or 7, wherein the synthetic resin constituting the synthetic resin foam plate and the synthetic resin constituting the base material of the adhesive tape are polystyrene.

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