JP2003268934A - Waterproofing sheet anchorage device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproofing sheet anchorage device capable of preventing the bonding strength of a waterproofing sheet from being lowered even if it is left on the object of waterproofing work as it is until the waterproofing sheet is constructed. <P>SOLUTION: A fixable metal-made anchorage device body 3 is mounted on the object 2 of waterproofing work, a thermoplastic bonding section 4 to the waterproofing sheet 1 placed along the object 2 of waterproofing work is mounted on the anchorage device body 3, and in the fixable waterproofing sheet anchorage device for mounting the waterproofing sheet 1 on the object 2 of waterproofing work by melting of the thermoplastic bonding section 4 by electromagnetic induction heating to the anchorage device body 3, an ultraviolet radiation hiding means V capable of freely hiding an ultraviolet radiation is provided to the thermoplastic bonding section 4. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof construction target portion (for example, a rooftop slab or a balcony),
A metal fixture main body is provided, and a thermoplastic adhesive portion for a waterproof sheet (for example, made of synthetic resin) arranged along the waterproof construction target portion is provided on the fixture main body, and the fixture main body is provided. Of electromagnetic induction heating to melt the thermoplastic adhesive portion to fix the waterproof sheet to the waterproofing target portion.

[0002]

2. Description of the Related Art A procedure for applying a waterproof sheet using this type of waterproof sheet fixture will be described. As shown in FIG. , Various shapes such as a strip plate shape and a rectangular shape can be used), and the waterproof sheet fixture W is fixed at predetermined intervals. [2] After the fixing work of the waterproof sheet fixing tool W is completed,
The waterproof sheet 1 is laid on top of them, and at the installation location of the waterproof sheet fixture W, electromagnetic induction heating is performed on the fixture body from above the waterproof sheet 1, and the heat generated at that time causes the waterproof sheet fixture to be heated. The thermoplastic adhesive portion 4 of W is melted to bond the waterproof sheet fixture W and the waterproof sheet 1. Regarding the electromagnetic induction heating, as shown in FIG.
The electromagnetic induction heater A having the electromagnetic induction coil 6 is arranged on the waterproof sheet 1 and is carried out by energizing the electromagnetic induction coil 6, and the magnetic field generated by the energization causes an electromagnetic induction action on the fixture body. An eddy current is generated and heat generated by the eddy current loss is used. Conventionally, as a waterproof sheet fixture of this type, as shown in FIG. 8, a thermoplastic adhesive portion 4 provided on a metal fixture body 3 is composed of, for example, an adhesive layer composed of a hot melt adhesive portion h. In some cases, the semitransparent hot-melt adhesive portion h is laminated so that it is exposed on the upper surface of the waterproof sheet fixture W (Japanese Patent No. 2971149, JP-A-9-2356).
82).

[0003]

In the above waterproof sheet construction, the step [2] (waterproofing) is performed after the step [1] (the step of installing the waterproof sheet fixture on the waterproofing target portion) is completed. The step of adhering the sheet to the waterproof sheet fixture is carried out.However, according to the set-up of the on-site construction, these two steps are not always carried out continuously, and it takes several days to several tens of days. It is not uncommon for these to be conducted at intervals of days. Therefore, the waterproof sheet fixture installed in advance in the waterproofing target portion is exposed to the atmosphere and exposed to sunlight until the step [2] is performed. According to the conventional waterproof sheet fixture described above, since the hot melt adhesive provided on the upper surface of the fixture body is always exposed, there is a risk of receiving ultraviolet rays from sunlight and causing quality deterioration. . That is, the conventional waterproof sheet fixing device has a problem in that the adhesive property of the waterproof sheet is not ensured due to deterioration of the quality of the adhesive portion, and the adhesive force of the waterproof sheet is likely to decrease. Such a problem tends to be particularly remarkable when, for example, the waterproof construction target portion extends over a wide range, the period during which the adhesive portion is exposed is likely to be long.

Therefore, an object of the present invention is to solve the above problems and to prevent the adhesive force of the waterproof sheet from being lowered even if the waterproof sheet is left on the waterproofing target portion until the waterproof sheet is laid. It is in the area of providing fixtures.

[0005]

The features of the invention of claim 1 are, as illustrated in FIGS. 1 to 6, provided with a metal fixture main body 3 which can be fixed on the waterproofing target portion 2, A thermoplastic adhesive portion 4 for the waterproof sheet 1 arranged along the waterproofing target portion 2 is provided on the fixture body 3, and the thermoplastic adhesive portion 4 is attached to the fixture body 3 by electromagnetic induction heating. In the waterproof sheet fixture that can be melted to fix the waterproof sheet 1 to the waterproofing target portion 2, the thermoplastic adhesive portion 4 is provided with an ultraviolet ray hiding means V capable of hiding ultraviolet rays.

According to the characterizing feature of the invention of claim 1, since the thermoplastic adhesive portion is provided with ultraviolet ray concealing means capable of concealing ultraviolet rays, even if the waterproof sheet fixture is exposed to ultraviolet rays, It becomes possible to conceal the ultraviolet rays by the ultraviolet ray concealing means, and it is possible to prevent the quality deterioration of the thermoplastic adhesive portion itself due to the ultraviolet rays. As a result, as described above, from the end of the step [1] (step of installing the waterproof sheet fixing tool on the waterproofing target portion), the step [2] (bonding the waterproof sheet to the waterproof sheet fixing tool). Until the start of the process), even if the waterproof sheet fixture installed in the waterproofing target part is exposed to ultraviolet rays due to sunlight, deterioration of the quality of the thermoplastic adhesive part can be prevented and the specified adhesion It is possible to maintain the performance. Therefore, even if the process plan of the waterproof sheet installation work is allowed to be flexible, the adverse effect on the waterproof sheet adhesion performance is reduced and the site adaptability is improved.

1 to 5, the thermoplastic adhesive portion 4 is a hot-melt adhesive portion H, and the ultraviolet light shielding means V is a hot-melt adhesive portion. It is the pigment 5 for hiding ultraviolet rays mixed in H.

According to the characterizing feature of the invention of claim 2, in addition to being able to achieve the effect of the invention of claim 1, it is melted in a temperature range that does not adversely affect the waterproof sheet to be adhered. While exhibiting the advantages of the hot-melt adhesive portion to be adhered, it becomes possible to prevent the deterioration of the hot-melt adhesive portion due to the ultraviolet light by the incorporated ultraviolet-masking pigment. For example, when a pigment such as titanium white is used as the ultraviolet ray hiding pigment, it can reflect the ultraviolet rays and prevent the ultraviolet rays from entering the hot-melt adhesive portion. In this case, the ultraviolet rays can be absorbed to prevent the ultraviolet rays from entering the hot-melt adhesive portion. In addition, since the hot-melt adhesive portion itself can be colored by the UV-masking pigment, for example, the hot-melt adhesive of the waterproof sheet fixing tool to be used depends on the time (or construction date) when the waterproof sheet fixing tool is installed If the colors of the parts are different, the elapsed time (or elapsed days) after installation, and
The exposure time (or the number of exposure days) can be known from the color at a glance, and it is easy to make a construction plan such as where to start the rest of the construction.

1 to 5, the thermoplastic adhesive portion 4 is a hot-melt adhesive portion H, and the ultraviolet ray shielding means V is a hot-melt adhesive portion. It is the ultraviolet absorbent 7 mixed in H.

According to the characterizing feature of the invention of claim 3, in addition to the effect of the invention of claim 1, it can be melted in a temperature range that does not adversely affect the waterproof sheet to be adhered. It is possible to prevent the deterioration of the hot-melt adhesive portion due to ultraviolet rays by the mixed ultraviolet absorber while exhibiting the advantages of the hot-melt adhesive portion to be adhered. That is, it is possible to prevent ultraviolet rays irradiated while the hot-melt adhesive portion is exposed from being absorbed by the ultraviolet absorbent, and to prevent the portion of the hot-melt adhesive portion that contributes to adhesion from being deteriorated by receiving ultraviolet rays. It will be possible.
Further, when the absorbed ultraviolet energy becomes thermal energy, the heat assists heating by electromagnetic induction heating in a later step, and the efficiency of the waterproof sheet bonding work can be improved.

As described above, the reference numerals are given for the sake of convenience in comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings due to the entry.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the parts indicated by the same reference numerals as those in the conventional example indicate the same or corresponding parts.

FIG. 1 shows a waterproof sheet 1 on which a waterproof sheet is fixed by a waterproof sheet fixing washer (hereinafter simply referred to as a fixing washer) W which is an embodiment of the waterproof sheet fixing device of the present invention. It corresponds to 2) and shows the situation where it is fixed to 2. The fixing washer W is fixed to the waterproof substrate 2 with screws at predetermined positions in the vertical and horizontal directions, and the waterproof sheet 1 is adhesively fixed to the upper surface of the fixing washer W. The waterproof sheet 1 is
It is laid on the waterproof substrate 2 via the fixing washer W.

The waterproof sheet 1 is composed of, for example, a PVC sheet, and a long waterproof sheet having a predetermined width is wound up in a factory to form a roll body, and the roll body is spread on site. A large-area waterproof sheet can be obtained by arranging and adhering the side edge portions of the adjacent waterproof sheets 1 to each other. Of course, an integral waterproof sheet may be formed in advance according to the area to be laid.

In the embodiment, the waterproof substrate 2 corresponds to a rooftop slab, and is formed by a slab having a reinforced concrete structure, a slab formed by arranging ALC plates, or a combination of a deck plate or a metal folded plate and concrete. There are various embodiments such as slabs, and further, those having a heat insulating layer laminated thereon. It is preferable that the waterproof base 2 be capable of supporting the screw B for fixing the fixing washer W in a retaining state.

The fixing washer W is the waterproof base 2
As shown in FIGS. 2 and 3, a washer body (corresponding to a fixture body) 3 made of a stainless steel disk having a diameter of about 50 mm is provided on the upper surface of the washer 3 and is melted and has an adhesive property. A thermoplastic adhesive portion 4 made of a thermoplastic synthetic resin that exerts the above is integrally provided.

The washer body 3 is provided with a countersunk recess 3A for fixing a screw at the center thereof and a mounting hole 3C for a screw B at the bottom thereof, and the upper surface of the washer body 3 surrounds the countersink recess 3A. An annular recess 3B is formed at a predetermined width. Specifically, the sheet metal is pressed to form an undulating shape as shown in the figure. Therefore, the second moment of area is increased as compared with a flat plate as it is, and it is possible to form a washer body 3 having high strength even with a thin plate.

The thermoplastic adhesive portion 4 is composed of a hot melt adhesive portion H which is formed by applying a hot melt adhesive material such as polyester resin to the upper surface of the washer body 3 and drying it. Also, the hot melt adhesive portion H
Is provided with ultraviolet ray concealing means V for preventing the hot melt adhesive from being deteriorated in quality by receiving ultraviolet rays. In the present embodiment, the ultraviolet light hiding means V is
Titanium white 5A, which is an example of the UV masking pigment 5
Is mixed in the hot-melt adhesive material.
Therefore, when the hot melt adhesive portion H is irradiated with ultraviolet rays, the titanium white 5A can reflect the ultraviolet rays to the outside of the hot melt adhesive portion H, and as a result, the ultraviolet rays pass through the hot melt adhesive portion H. Can be prevented. Therefore, it is possible to prevent the deterioration of the quality of the adhesive portion caused by the decomposition action by ultraviolet rays.

The procedure for fixing the waterproof sheet 1 in this embodiment will be briefly described. [1] Fixing washers W are fixed on the waterproof substrate 2 by screws (see FIG. 4A). [2] Waterproof sheet 1 so as to cover the fixing washer W
To place. However, when the waterproof base 2 has a wide area, it may take several days to fix the fixing washer W, and
If the waterproofing work is divided into a fixing washer installation group and a waterproof sheet laying group, it may be left in the state shown in FIG. 4 (a), but such a situation may occur. Also, the ultraviolet ray concealing means V can prevent deterioration of the hot melt adhesive portion H due to ultraviolet rays. [3] The washer body 3 is heated by applying the electromagnetic induction heater A to the respective positions of the washer body 3 from above the waterproof sheet 1 to heat the washer body 3, and the hot melt adhesive portion H
The waterproof sheet 1 can be adhered to the washer body 3 by melting (see FIG. 1). Incidentally, the electromagnetic induction heater A has an electromagnetic induction coil 6 provided therein, and the induction coil 6 is excited by an alternating current, and an eddy current is generated in the washer body 3 by the electromagnetic induction action of the generated magnetic field. Let Therefore, the washer body 3 generates heat due to the eddy current loss, and the hot melt adhesive portion H on the upper surface is melted by receiving the heat and the waterproof sheet 1 can be adhered (FIG. 4).
(See (b)).

[Other Embodiments] Other embodiments will be described below.

<1> As described in the previous embodiment, the fixture body 3 is made of a thermoplastic synthetic resin such as polyester resin (which melts and exhibits adhesiveness) on the upper surface of a stainless steel disk having a diameter of about 50 mm. The shape is not limited to the one formed by coating the hot melt adhesive portion H made of resin), and for example, in addition to a disc, various shapes such as a square plate and a band plate are adopted. can do. Also,
The material is not limited to stainless steel, and may be made of other metal. Alternatively, a metal layer may be laminated on the upper surface of synthetic resin or ceramics. On the other hand, the manufacturing method of the fixture main body 3 is not limited to the press described in the above embodiment, and can be formed by, for example, casting or cutting even if the material is made of metal. Further, the fixing of the fixture main body 3 to the waterproof substrate 2 is not limited to the screw fixing, and it is also possible to fix it by means such as anchor bolts, nails, and adhesives. In short, the fixture body 3 may be heated by electromagnetic induction, and the heat may melt the thermoplastic adhesive portion 4 to bond the waterproof sheet 1,
They are collectively called the fixture body. <2> The thermoplastic adhesive portion 4 is not limited to the one constituted by the hot melt adhesive portion H made of the thermoplastic synthetic resin such as the polyester resin described in the above embodiment, and may be, for example, EVA type or polyolefin. It may be composed of a hot-melt adhesive portion H of a system, a styrene / elastomer system, a polyamide system, or the like. In addition, the thermoplastic adhesive portion 4
Need not be formed on the entire upper surface of the fixture body 3, and may be formed on a part of the upper surface.
As shown in FIG. 5, the annular recess 3B may have no adhesive portion. <3> The ultraviolet ray concealing means V is not limited to one configured by mixing the ultraviolet ray concealing pigment 5 such as titanium white 5A described in the above embodiment into the hot melt adhesive portion, and for example, Instead of Titanium White 5A, it may be composed of an organic pigment such as carbon black or cyanine blue, or an ultraviolet light hiding pigment 5 typified by an inorganic pigment such as titanium black, titanium yellow or iron black. Further, in place of the UV masking pigment 5, a benzotriazole-based or triazine-based or hindered amine-based UV absorber or a hindered amine-based UV stabilizer is used alone or in combination and mixed into the hot-melt adhesive portion to form the UV-hiding means V. It may be configured (see FIGS. 1 to 5). Further, as shown in FIG. 6, a release paper 8 having an ultraviolet blocking function is preliminarily provided integrally on the upper surface of the thermoplastic adhesive portion 4 in a peelable state, and the release paper 8 is used as an ultraviolet light hiding means. It may constitute V. In this case, immediately before disposing the waterproof sheet 1 on each fixing washer W, the release paper 8 is peeled off from the fixing washer W and removed, so that the fixing body 3 is attached to the fixing body 3 by the thermoplastic adhesive portion 4. It will not hinder the adhesion of the waterproof sheet 1.

[Brief description of drawings]

FIG. 1 is an explanatory perspective view showing a fixing state of a waterproof sheet.

FIG. 2 is a perspective view showing a washer.

FIG. 3 is a sectional view showing a washer.

FIG. 4 is an explanatory sectional view showing a procedure for fixing the waterproof sheet.

FIG. 5 is a sectional view showing a washer of another embodiment.

FIG. 6 is a perspective view showing a washer of another embodiment.

FIG. 7 is an explanatory perspective view showing a fixing state of a conventional washer.

FIG. 8 is an explanatory sectional view showing a conventional procedure for fixing a waterproof sheet.

[Explanation of symbols]

1 tarpaulin 2 Waterproof base (corresponding to the waterproof construction target part) 3 Washer body (corresponding to the fixture body) 4 Thermoplastic adhesive part 5 UV concealing pigment 7 UV absorber H Hot melt adhesive part V UV concealment means

Continued front page    (72) Inventor Shu Inoue             24-10 Ekimachi, Suita City, Osaka Prefecture             Made Co., Ltd.

Claims (3)

[Claims] 1. A metal fixture body, which is freely fixable, is provided on a waterproofing target portion, and a thermoplastic adhesive portion for a waterproof sheet arranged along the waterproofing target portion is provided on the fixture main body. Is a waterproof sheet fixture that is capable of fixing the waterproof sheet to the waterproofing target portion by melting the thermoplastic adhesive portion by electromagnetic induction heating to the fixture body, wherein the thermoplastic adhesive portion, A waterproof sheet fixture equipped with ultraviolet ray masking means that can block ultraviolet rays. 2. The waterproof sheet fixing according to claim 1, wherein the thermoplastic adhesive portion is a hot melt adhesive portion, and the ultraviolet light shielding means is an ultraviolet light shielding pigment mixed in the hot melt adhesive portion. Ingredient 3. The thermoplastic adhesive portion is a hot melt adhesive portion, and the ultraviolet ray hiding means is an ultraviolet ray absorbing material mixed in the hot melt adhesive portion.
The waterproof sheet fixing device described in.