JP2008285860A - Method for heat insulation waterproof construction - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for heat insulation waterproof construction capable of fusing and solidifying a waterproof sheet and fixing devices in a short time without dissolving a heat insulator during the heating by electromagnetic induction. <P>SOLUTION: In this method for heat insulation waterproof construction, the heat insulator is laid down on a waterproof base, the fixing devices are disposed at required positions on the heat insulator and secured to the waterproof base by piercing fixing screws through the heat insulator, and then a waterproof sheet is thermally fused to the fixing devices for fixing the waterproof sheet on the waterproof base. An insulator having a vent part allowing the rear surface space of the fixing devices to communicate with the outside thereof is installed between the heat insulator and the fixing devices. The vent part of the insulator is formed in a groove shape. The vent part is provided by forming the insulator in a geometric pattern. An electromagnetic induction is used in place of thermal fusing. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat insulating waterproofing method using a heat insulating material in a waterproofing work for a floor surface of a land roof or a sloped roof of a building, or a veranda or roof balcony of a house.

  In this type of thermal insulation waterproofing method, a thermal insulation material such as expanded polystyrene is laid on the entire surface to be waterproofed, and the fixture is fixed to the waterproof base with a fixing screw with a screwdriver, etc., and then heated by electromagnetic induction etc. There is a method of thermally welding the waterproof sheet. However, in this method, the fixing tool generates heat due to heating, so that there is a risk that the heat insulating material in contact with the lower grounding portion of the fixing tool melts, the fixing screw protrudes from the upper surface of the fixing tool, and the fixing tool and the waterproof sheet are poorly bonded. It was. In order to solve this problem, a sheet fixture having a heat shield layer on the lower surface of the fixture has been proposed (Patent Document 1).

However, with the proposed method, it is possible to eliminate melting of the heat insulating material, but there is a space between the metal layer and the heat shield layer of the sheet fixture body, and the air in this space expands during heating and is fixed. It tries to escape to the welded area between the waterproof base and the waterproof sheet and fixture through the gap between the screw holes, but there is no gap between the waterproof base and the heat insulating material because the waterproof base is tightened by the fixing screw. It is in a blocked state. After all, since the expanded air acts as a force to push up the waterproof sheet gradually, it is necessary to hold down until the waterproof sheet and the adhesive layer formed on the sheet fixture are welded and solidified. there were.
JP 2003-090105 A

  The present invention has been made in view of such a current situation, and the object of the present invention is to cause swelling by welding the waterproof sheet and the fixture without melting the heat insulating material during heating by electromagnetic induction or the like. There is no insulation and waterproofing construction method.

  The present invention for achieving the above object is to lay a heat insulating material on a waterproof base, dispose a fixture at a required position on the heat insulating material, penetrate the heat insulating material with a fixing screw, and fix the fixture to the waterproof base. It is a heat insulating waterproofing method in which the waterproof sheet is fixed on the waterproof base by thermally welding the waterproof sheet to the fixing tool, and between the heat insulating material and the fixing tool, the fixing back surface space and the fixing tool outer side. (1), the insulator has a groove shape (Claim 2), and the insulator has a geometric pattern. In other words, it is to provide a ventilation portion by forming it into a shape (Claim 3), and the heat welding method is a heat insulating waterproofing method that is an electromagnetic induction heating method (Claim 4).

  According to the heat insulating waterproofing method according to the present invention, by providing an insulator, the heat insulating material is not melted during heating by electromagnetic induction or the like. Further, since the space between the back surface of the fixture and the outside of the fixture is ventilated, the force for pushing up the waterproof sheet as described above does not act, and the crimping can be performed in a short time without causing blistering, and the workability is improved. Furthermore, even in summer and winter, there is no pressure difference due to temperature differences between the fixture back space and the outside of the fixture, there is no pulling force acting on the fixing screws due to temperature differences, and the fixing screws are fixed with fixing screws. Power can be held stably for a long time.

  The present invention lays a heat insulating material on a waterproof base, disposes a fixing tool at a required position on the heat insulating material, penetrates the heat insulating material with a fixing screw, and fixes the fixing tool to the waterproof base. The waterproof sheet is fixed to the waterproof base by heat-welding the waterproof sheet by heating such as electromagnetic induction, and between the heat insulating material and the fixing tool, between the fixing back surface space and the fixing tool outside. In the following, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an embodiment of the present invention. The fixture A used in the present invention is configured by laminating and integrating a heat welding layer for fixing the waterproof sheet B on the upper surface. The material of the fixture A is not particularly limited, but a steel plate that is not easily rusted even in a high humidity state, such as a stainless steel plate or a steel plate that has been subjected to rust prevention treatment such as zinc, aluminum, magnesium plating or galvanization, is preferably used. .

  Moreover, the fixing tool A is formed in the same thickness, shape, and size as the steel plate used for this kind of conventional fixing tool. For example, the thickness is about 0.6 to 1 mm, and the shape is arbitrary, such as a rectangular plate shape that is a square or a rectangle, or a circular or elliptical disk shape, and the size is one side or an outer diameter of 50 to 100 mm. Formed to a degree. In consideration of workability and workability during construction, a circular disk type having a diameter of 60 to 90 mm can be suitably used. The following description will focus on the disk-type fixture, but the present invention is not limited to this.

The heat-welding layer (not shown in the figure) laminated and integrated on the upper surface of the fixture A may be any material that can be heat-welded to the waterproof sheet B by heating, such as a thermoplastic resin and a hot melt adhesive. . Examples of the thermoplastic resin include polyethylene, polypropylene, ethylene-vinyl acetate copolymer, olefin resins such as EEA (ethylene ethyl acrylate), vinyl chloride resins, acrylic resins, urethane resins, thermoplastic elastomers, and the like. Examples of the hot melt adhesive include polyester, polyamide, and ethylene-vinyl acetate copolymer hot melt adhesives.
These thermoplastic resins, hot melt adhesives, and the like are laminated and integrated on the upper surface of the fixture A to a thickness of 0.01 to 1.0 mm by a known method such as a coating method or a sheet laminating method, thereby heat welding. A layer can be formed. At this time, as the anticorrosive treatment of the fixture A, the thermoplastic resin, the hot melt adhesive, and the like may be laminated and integrated on the back surface.

  Heating methods for heat welding include hot air heating, high frequency dielectric heating, electromagnetic induction heating and the like, but electromagnetic induction heating is preferable in consideration of the finished appearance and workability.

  On the outer peripheral edge of the fixture A, a rising rib A1 is formed over the entire circumference, and a screw mounting hole for allowing a fixing screw D for fixing the fixture A on the waterproof base C to pass therethrough is formed in the center portion, and its periphery Is formed with a screw head fixing countersink for accommodating the head of the fixing screw D so as not to protrude from the upper surface of the fixture A, and further includes a reinforcing rib A2 so as to surround the screw head fixing countersink. Is recessed.

  The waterproof sheet B used in the present invention includes vinyl chloride resin, polyethylene resin, polypropylene resin, acrylic resin, ethylene-vinyl acetate copolymer resin, olefin resin, styrene resin, urethane resin, etc. In consideration of workability and durability, a vinyl chloride resin is preferable. Although the thickness of a waterproof sheet is not specifically limited, Usually, it is 0.5-5.0 mm, 1.0-4.0 mm is preferable when workability is considered, More preferably, it is 1.5-2. .5 mm.

  The reinforcing rib A2 is formed to increase the strength of the fixture A. However, since the waterproof sheet B is not welded to the upper surface of the reinforcing rib A2, the area occupied by the reinforcing rib A2 on the upper surface of the fixture A is as follows. Needs to be kept within a range in which the welding strength with the waterproof sheet B can be maintained.

As the heat insulating material E used in the present invention, generally a foam made of a synthetic resin is used, and foams such as polyethylene, polypropylene, polystyrene, polyurethane, phenol resin, and urea resin are listed. In view of cost, polystyrene and polyethylene are preferable.
The foaming magnification of the foam can be 5 to 50 times, preferably 10 to 40 times, more preferably 15 to 30 times in view of strength and heat insulation.

  The thickness of the heat insulating material E is usually 10 to 50 mm, and is adjusted to a thickness of 10 to 100 mm including the case where a plurality of heat insulating materials are stacked. In consideration of the fixing property and heat insulating properties of the waterproof base C and the heat insulating material E, 20 to 60 mm is preferable, and 30 to 50 mm is more preferable.

  The insulator F used in the present invention is a sheet-like member having a ventilation portion F1 that insulates the fixture A and the heat insulating material E and connects the fixture back surface space A3 and the fixture outer side. The insulator F may be made of any material having a low thermal conductivity, and can be used alone or in combination of synthetic resin, rubber, paper, wood, nonwoven fabric, felt and the like.

The insulator F needs to have a ventilation portion F1 that connects the fixture back space A3 and the fixture outer side, and the ventilation portion F1 is not limited to one location, and may be provided in a plurality of locations. The ventilation portion F1 is formed by using a groove as shown in FIGS. 2A, 2B, 2C, and 2D, and the insulator F itself is shown in FIGS. ), (C), and the like, and a method of forming a ventilation portion in a geometric pattern shape such as a star shape or a flower shape. Moreover, the dotted line in FIG.2, 3 has shown the position of the earthing | grounding part A4 of a fixing tool.
The groove as the ventilation portion may be either linear or curved, and can be formed by cutting out with a width of 0.5 to 10 mm. Further, the groove as the ventilation portion may be provided continuously from the internal punched portion such as a fixing screw hole of the insulator to the outer peripheral edge, and is not provided from the internal punched portion but from the middle as shown in FIG. You may provide to a periphery.
Considering the deformability of the insulator when tightened with a fixing screw and the alignment with the fixture, the shape is preferably a geometric pattern.

  The thickness of the insulator F is preferably 0.5 to 3 mm, more preferably 1 to 2 mm. If it is thinner than 0.5 mm, the effect of heat insulation is reduced, and if it is thicker than 3 mm, the step on the finished surface of the waterproof sheet becomes noticeable.

  Since the fixture has reinforcing ribs, there is a space between the fixture upper side and the waterproof sheet, and the fixture tends to expand due to heating of the fixture. Although the gap between the fixing screw hole of the fixing tool and the fixing screw gradually ventilates the back space of the fixing tool, the waterproof sheet tends to swell slightly due to the influence of electromagnetic induction heating when the fixing tool is heated rapidly. In order to solve this problem, a fixed screw having a notch in the head groove shown in FIG. 4 (notch from the end toward the center so that the lower part of the driver groove remains at the same diameter as the screw diameter) is used. Thus, it is preferable to reliably vent the space between the upper surface of the fixture and the back surface of the fixture. Further, instead of using a fixing screw having a notch in the head groove, the fixing screw may be fixed to the base via a kikuwasher or the like to ensure air permeability.

  EXAMPLES Next, although an Example is given and this invention is demonstrated in more detail, this invention is not limited to these Examples.

<Example 1>
A foamed polystyrene-based heat insulating material of 910 mm (length) × 910 mm (width) × 35 mm (thickness) is continuously laid on a concrete waterproof base. Next, at the required position on the top surface, a cardboard insulation with a star shape shown in FIG. 3 (e) having a side length (XX) of 100 mm, a thickness of 1.5 mm, and a fixed screw hole diameter of 6 mm. The body and a circular fixture having a diameter of 85 mm and a thickness of 0.6 mm and a polyester hot-melt adhesive laminated on the upper surface are sequentially arranged, and the fixture, insulator, and heat insulating material are shown in FIG. And fixed with a fixing screw (length: 90 mm, screw diameter: 5.8 mm) having a notch in the head as shown in FIG. Subsequently, a 2.0 mm vinyl chloride waterproof sheet was laid on the uppermost surface, and electromagnetic induction heating (800 W, 6 seconds) was performed on the vinyl chloride waterproof sheet for heat welding.

<Example 2>
Instead of a fixing screw (length: 90 mm, screw diameter: 5.8 mm) having a notch in the head groove, a normal fixing screw (length: 90 mm, screw diameter: 5) having no notch in the head groove .8 mm) was used in the same manner as in Example 1 except that it was used.

<Example 3>
Instead of the cardboard insulator of Example 1, the flower pattern shown in FIG. 3 (h) has an outer diameter of 95 mm, a semicircular cutout diameter of 20 mm, a thickness of 1.0 mm, and a fixed screw hole. The operation was performed in the same manner as in Example 1 except that a hard vinyl chloride insulator having a diameter of 6 mm was used.

<Example 4>
Instead of the cardboard insulator of Example 1 above, it is made of vulcanized SBR rubber having a donut shape shown in FIG. 2 (B), an outer diameter of 95 mm, an inner diameter of 80 mm, a notch width of 5 mm, and a thickness of 2 mm. The operation was performed in the same manner as in Example 1 except that an insulator was used.

<Comparative Example 1>
The operation was performed in the same manner as in Example 1 except that no insulator was used.

<Comparative example 2>
Instead of the cardboard insulator of Example 1 above, a disk-shaped cardboard insulator with an outer diameter of 95 mm, a fixed screw hole diameter of 6 mm, a thickness of 1.5 mm and no vents such as notches is used. The operation was performed in the same manner as in Example 1 except that.

<Comparative Example 3>
In place of the cardboard insulator of Example 1 above, a disc-like vulcanized SBR rubber insulator having an outer diameter of 95 mm, a fixed screw hole diameter of 6 mm, a thickness of 2 mm and no vents such as notches is provided. It was operated and constructed in the same manner as in Example 1 except that it was used.

About each Example and a comparative example, the non-melting property of a heat insulating material and the weldability of a waterproof sheet and a fixture are evaluated by the following evaluation methods and evaluation criteria, and the evaluation results are shown in Table 1.
"Non-meltability of insulation"
The waterproof sheet was cut from each construction body with a cutter, the fixture was removed, and the heat insulating material was visually observed.
○: Heat insulation is not damaged by heat.
X: There is damage due to heat of the heat insulating material.
[Weldability of waterproof sheet and fixture]
About each construction object, the floating condition of the welding surface was observed visually, and also the welding part of the waterproof sheet was cut with a cutter etc., the degree of welding was confirmed, and the following criteria were evaluated.
○: There is no floating and welding.
(Triangle | delta): Although some float is seen, it has welded.
X: A float is seen and welding is inadequate.

  Examples 1 to 3 using an insulator provided with a ventilation portion connecting the fixture back space and the fixture outside are “non-melting property of heat insulating material” and “welding property of waterproof sheet and fixing device”. It turns out that both are excellent. In Comparative Example 1, since there is no insulator, the heat insulating material melts, and the weldability between the fixture and the waterproof sheet also deteriorates. In Comparative Examples 2 and 3, the heat insulating material does not melt, but it can be seen that sufficient welding cannot be achieved by pressure bonding for 10 seconds because the fixture back surface space and the fixture outside are not vented.

  The heat insulating waterproofing method of the present invention provides an insulating body having a ventilation portion that connects the back surface space of the fixture to the outside of the fixture, thereby welding and solidifying the waterproof sheet and the fixture without melting the heat insulating material during electromagnetic induction heating. Can be used in a wide range of insulation and waterproofing work.

Sectional drawing which shows the construction example concerning this invention. The top view which shows the various shapes of the insulator concerning this invention. The top view which shows the other various shapes of the insulator concerning this invention. FIG. 5 is a detailed view of a fixing screw having a notch in the head groove.

Explanation of symbols

A: Fixing tool A1: Ribbing rib of fixing tool A2: Reinforcing rib of fixing tool A3: Back space of fixing tool A4: Grounding part of fixing tool B: Waterproof sheet C: Waterproof base D: Fixing screw D1: Head Groove notch E: Insulation material F: Insulator F1: Insulator vent F2: Insulator fixing screw hole

Claims (4)

  Install a heat insulating material on the waterproof base, place a fixture at the required position on the heat insulating material, penetrate the heat insulating material with a fixing screw and fix the fixture to the waterproof base, and then attach a waterproof sheet to the fixture A waterproof heat insulation method in which a waterproof sheet is fixed on a waterproof base by heat welding, and an insulator having a ventilation portion that connects a fixture back space and an outer side of the fixture between the heat insulating material and the fixture. A heat-insulating and waterproofing method characterized by providing it.   The heat insulation waterproofing method according to claim 1, wherein the ventilation portion of the insulator has a groove shape.   The heat insulation and waterproofing method according to claim 1, wherein a ventilation portion is provided by forming the insulator in a geometric pattern.   The heat insulation waterproofing method according to any one of claims 1 to 3, wherein the heat welding method is an electromagnetic induction heating method.

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