JPS636702B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat insulating and waterproof material having a novel structure.More specifically, the present invention relates to a heat insulating and waterproof material having a novel structure. This is a heat insulating and waterproof material made by laminating a waterproof sheet manufactured by the company in an asymmetrical manner along either the X or Y axis.

Conventionally, various types of waterproofing work have been performed on the roofs of concrete buildings for the purpose of waterproofing the buildings. These waterproofing constructions are broadly classified into asphalt waterproofing and sheet waterproofing based on the materials used, and are also classified into exposed waterproofing methods and non-exposed (embedded) waterproofing methods based on the construction form. In each case, construction methods have been adopted that take advantage of the advantages of each material and construction method and cover the disadvantages. However, in recent years, due to the rise in heat energy costs, energy conservation has been promoted to increase cooling efficiency in the summer and heating efficiency in the winter. Construction has come to be required, and various construction methods have been proposed.

One of the proposals is the USD construction method (Upside construction method).
There is a construction method called the down construction method. In this construction method, a waterproof layer is first formed using asphalt (or a waterproof sheet) on the concrete structure, then an inorganic or organic insulation material is placed on top of that, and then pressed concrete is poured over the insulation material. be. This construction method has been in use since around 1978, but since the waterproof layer is under the holding concrete and insulation layer, it is extremely difficult to repair in the event of a water leak, and it is often This can lead to accidents such as having to completely replace the adhesive. No matter how carefully the waterproof layer is constructed, the waterproof layer can be destroyed by slight movements of the building or deformation and displacement due to thermal contraction and expansion. It is well known in the industry that if this destruction occurs in even one place, it will lead to a major water leakage accident.In light of the current situation where there is no perfect waterproof layer, research is underway into methods that exceed the USD method. One new proposal is an exposed insulation and waterproofing method in which insulation is directly bonded onto the concrete structure and a waterproof layer is placed on top of the insulation. However, this method introduces two new drawbacks.
One of them is the abnormal temperature rise of the waterproof layer. This is because insulation materials, as the name suggests, do not allow thermal energy to pass through, so direct solar energy is stored in the waterproof layer, which causes significant heat deterioration compared to normal non-insulated construction methods, causing deformation such as curvature, cracking, and This may lead to breakage, etc. A major drawback of this method is that the waterproof layer is placed on top of the easily deformable insulation material, so the waterproof layer can be ruptured by walking during construction or subsequent maintenance.

Even in the case of the USD construction method and the exposed insulation insulation waterproofing construction method, construction is mainly carried out by bringing these materials to the site, which is a serious management issue that is greatly influenced by the environmental conditions of the site and the skills of the craftsmen performing the construction. requirements. How to manage the on-site construction is an issue that has been considered for a long time in the waterproofing construction industry, but it is important to consider the human element of construction tailored to the site and painting, pasting, and connecting. Due to the heavy construction work, the project has been in a state of almost giving up to this day.

The present invention was made in view of the current situation, and
We eliminate defects associated with conventional on-site construction as much as possible, and perform roof waterproofing work with a high degree of safety, with extremely high quality waterproofing achieved through simple work at the construction site, and whose quality is always stable. The purpose is to provide a heat insulating and waterproof material that can be used as a heat insulating and waterproof material, and an example of its implementation will be described with reference to the drawings. An inorganic protective flat plate 2 such as a slate plate of the same size is integrally bonded and laminated with an adhesive 23, and a synthetic resin waterproof sheet 1 is placed on the top surface of the inorganic protective flat plate 2 with an adhesive 12. (1) One side of the inorganic protective flat plate 2 is left as an attachment margin for the sealant tape 6, and (2) adhesive is attached to the other three sides so as to provide a raised area 5 for attaching the sealant tape 6. (3) The overlap joint piece 1' is made to protrude from the side opposite to the side where the pasting allowance 4 is provided, and the two sides adjacent to the side where the pasting allowance 4 is provided are coated with inorganic protection. This is a heat insulating and waterproof material characterized by being bonded and laminated to have the same dimensions as the flat plate 2.

The foamed heat insulating board 3 used in the present invention is preferably made of high-magnification foamed plastic or glass foam, such as foamed polyethylene, foamed polystyrene, foamed polypropylene, foamed polyurethane, or foamed polyvinyl chloride, and has a thickness of 20 to 50 mm. ing. As the inorganic protective plate 2, in addition to a slate board, a plaster board, a glass fiber reinforced concrete board, etc. can be used. The suitable thickness of the protective plate is 5 to 10 mm.

A nitrile rubber contact type adhesive is suitable for adhering the foam heat insulating board 3 and the inorganic protective flat board 2. Apply the adhesive to both the insulation board and the protective plate with a brush or spray. Coating amount is 250~ per ^1m2
It is best to weigh about 300g, and after drying for 3 to 5 minutes in a drying oven at 80 to 100°C (it should be dry to the touch), laminate the adhesive side.
Chloroprene rubber adhesives and neoprene rubber adhesives can also be used. A synthetic resin waterproof sheet is laminated onto the inorganic protective flat plate 2 of the heat insulating base material obtained by laminating in this manner. The synthetic resin waterproof sheet in the present invention is based on a thermoplastic synthetic resin such as a soft vinyl chloride resin sheet, and EVA sheets, polyethylene, chlorinated polyethylene, etc. are also suitable. The reason why thermoplastic synthetic resin is used is because the waterproofing method of the present invention is based on a thermal welding method and a welding method.
If it is a synthetic resin for which a thermal welding method or a welding method is used, it may partially contain thermosetting or thermally crosslinkable resin.

In addition to a single sheet, the waterproof sheet can also be a sheet with a restraining layer such as a glass nonwoven fabric interposed between the layers to prevent shrinkage. The thickness of the sheet is preferably approximately 1.2 to 1.5 m/m.

The heat-insulating waterproof material of the present invention is characterized by the adhesion and lamination of the waterproof sheet and the heat-insulating base material. 1st
As shown in the figure, the horizontal centerline of the insulation base material x-x
When the vertical center line y-y is drawn, the waterproof sheet is attached symmetrically to the xx-line but asymmetrically to the y-y line. That is, the sealant tape application margin 4 is not covered with a waterproof sheet, but instead is provided with a cutout portion in which the protective flat plate 2 is exposed.

An extra overlap joint piece 1' is attached to the opposite side of the pasting allowance 4. The width of sealant tape is approximately 50 to 80
mm, so the pasting cost is half that, 25 to 40 mm.
Keep it. The width of the overlap joint piece 1' should be approximately 80 to 100 mm. On three sides other than the pasting margin part 4, a floating pasting part 5 for fitting and pasting the sealant tape is provided.
The width of the raised area is theoretically one half of the width of the sealant tape, but when applying sealant tape, the sheet at the joint area is widened, so it should be the same width as the sealant tape, i.e. about 50-80mm. Appropriate. For adhesion 12 between the waterproof sheet and the heat insulating base material, a rubber adhesive can of course be used, but a wet lamination method using an EVA emulsion adhesive or an acrylic emulsion adhesive may be used. The process at the factory includes gluing the waterproof sheet. Therefore, the heat insulating and waterproof material A can be mass-produced and sufficient quality control can be carried out, so that troubles such as peeling of the waterproof sheet or peeling of the foamed heat insulating board and the inorganic protective flat plate are completely eliminated. This insulation and waterproof material A is used at the site.
All you need to do is adhere the concrete to the exposed concrete structure with adhesive 30, apply sealant tape to the joints, seal the joints, and then construct watertight areas using welding and welding methods, which is extremely safe compared to conventional construction methods. Become.

The waterproofing method using the heat insulating waterproof material A of the present invention is carried out by the following means. This procedure will be explained with reference to the drawings shown in FIGS. 5 to 9. As shown in FIG. 5, the heat insulating and waterproof material A is arranged so that the side having the lap joint piece 1' and the side having the attachment margin 4 of the sealant tape 6 are closely adjacent to each other. Glue.
A rubber-based contact type adhesive such as neoprene rubber, chloroprene rubber, or nitrile rubber is suitable for adhesion 30 between the heat-insulating and waterproof material A and the concrete structure. The adhesive 30 is applied to both the frame side and the foam insulation board.

It is best to aim for an amount of 50 to 250 g/m ² on one side. After leaving it open for about 30 minutes and letting it dry to the touch, attach the insulation and waterproof board. In this case, not only the vertical joints B but also the horizontal joints C must be correctly arranged so as to be pasted together. When using a contact type adhesive, it cannot be reapplied, so it must be applied accurately. EVA-based emulsion adhesives can also be used if there are few unevennesses in the building structure, but if the insulation and waterproofing material itself warps, it will not be possible to install it tightly, so a rubber-based adhesive with strong initial adhesive strength is suitable. .

After arranging and adhering the heat insulating and waterproof materials on the building frame in this manner, the vertical joints are widened and sealant tape 6 is pasted on the joints B as shown in FIG. In this case, when the overlap joint piece 1' and the raised adhesive portion 5 are opened, a margin necessary for pasting the sealant tape 6 is created. Cut the end of the sealant tape 6 slightly in front of you, taking into account the width of the sealant tape for side joints. It is better to make this cut at the stage of pasting the sealant tape for the side joints so that it is more precise and the watertightness is improved accordingly.

Next, the overlap joint piece 1' is closed and overlapped on the waterproof sheet as shown by the dotted line. In this case, by pressing the overlap joint piece 1' against the sealant tape, sufficient adhesion can be obtained and the overlap joint piece 1' will not warp. Next, as shown in FIG. 6, hot air is blown onto the contact area between the lap joint piece 1' and the waterproof sheet 1 using a hot air burner of a welding machine to heat and soften both sides, and then press them together to form the welded part 7. establish. A width of approximately 40-50 mm is sufficient for this welded portion. The ends of the overlap joint pieces 1' are finished by welding using a welding rod 8. Once the vertical joints have been welded in this way, as shown in Figure 9, the raised adhesive parts 5, 5 of the horizontal joints C are opened to expose the joints, and sealant tape 6' is pasted. . In this case, if the joints with the sealant tape 6 used for the vertical joints are pressed with fingers to make them adhere to each other and integrate, there will be no fear of water leaking from this part. Then, as shown by the dotted line, the raised adhesive part is closed and the tape is pressed onto the sealant tape. As shown in Figure 7, on the horizontal joint C' of both floating parts,
A welded portion 7 is provided by welding a synthetic resin tape of 80 to 100 mm in the same manner as the welding of the overlapped joint piece 1' of the vertical joint. By providing this welded portion 7 over the entire surface of the synthetic resin tape, there will be no cracking or peeling from this portion due to shrinkage. It is preferable to use the same resin as the waterproof sheet 1 for the synthetic resin tape. Welding rod 8 is used to connect the end of the tape and the waterproof sheet.
Finish by welding.

The heat insulating and waterproof material of the present invention has the following characteristics. In other words, the insulation and waterproofing material is not constructed on-site, but is manufactured under strict quality control in a factory, so it is difficult to bond the foam insulation board and the inorganic protective plate, and to attach the sealant tape to the area where it is attached. Since the waterproof sheet can be adhered to the inorganic protective flat plate without leaving the parts and the dimensions of the lap joint pieces can be secured according to specifications, there is no need to worry about lifting, peeling, or dimensional differences in these parts. . Moreover, it is an extremely simple construction method that involves simply arranging and adhering such heat-insulating and waterproofing materials onto a concrete structure using an adhesive, which is extremely simple and can significantly shorten the construction period compared to conventional methods. It is possible to eliminate various conventional defects.

In addition, since a sealant tape attachment portion and a joint piece having a raised adhesive portion on the opposite side are provided, the attachment portion and the adjacent piece of the heat-insulating waterproof material having the joint piece are arranged exactly to form an overlapped joint. When the piece is folded back and unfolded, the exposed part of the inorganic protective flat plate consisting of the pasting margin and the raised pasting part is formed.
Sealant tape can be applied to this area so that it is evenly distributed across both sides, and by laminating the overlap joint piece on top of it and pressing it into tight contact, the area between the adjacent insulation and waterproofing materials is completely watertight. Since the area is sealed and covered, there is no fear of water leaking from this area.

Furthermore, since we have provided a floating part for fitting the sealant tape on the two sides adjacent to the side where the pasting allowance part was provided, other insulation and waterproofing materials can be placed adjacent to it.
By expanding the waterproof sheet, joints are created where the inorganic protective flat plates are exposed at the abutting areas on both sides, and by applying sealant tape to these joints, returning the waterproof sheet to its original position and pressing it, This part is also watertight. Note that the waterproof effect can be further enhanced by welding and finishing the upper surface of this portion with a synthetic resin tape.

Moreover, by making the overlapping joint pieces protrude, it is possible to overlap the protruding joint pieces on the surface of the waterproof sheet of another adjacent heat-insulating waterproof material. The overlapping portions are thermally welded using a hot air welding machine or the like, and the end of the overlapping joint piece and the surface of the waterproof sheet can be finished by welding with a welding rod, thereby achieving even higher watertightness.

Moreover, since an inorganic protective plate is provided between the waterproof sheet and the foam insulation board, the waterproof sheet will not become abnormally hot and will not suffer from heat deterioration, deformation, cracking, etc.
The waterproof sheet will not break, and the waterproof sheet will not break even when walking during construction or maintenance.

In addition, the connection with the surrounding rising parts can be achieved by welding the waterproof sheet attached to the rising part to the waterproof sheet on the heat-insulating waterproof material and welding the ends, as in the conventional construction method.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a plan view of the heat insulating and waterproof material, and FIGS.
4 is an enlarged view of the circular part in FIG. 2, FIG. 5 is a plan view of the construction state, and FIGS. 6 and 7 are 6- A cross-sectional view of the vertical joint along line 6, a cross-sectional view of the horizontal joint along line 7-7, and Figures 8 and 9 are perspective views. Vertical joint part, C is horizontal joint part,
D is the frame, 1 is a synthetic resin waterproof sheet, 1' is a lap joint piece, 2 is an inorganic protective flat plate, 3 is a foam insulation board, 4 is a pasting allowance (notch part), 5 is a raised pasting part,
6 is a sealant tape, 7 is a heat welding part, 8 is a welding rod, and 9 is a tape.

Claims (1)

[Scope of Claims] 1. An inorganic protection plate such as a slate board having the same dimensions as the foam insulation board is integrally adhered and laminated on the upper surface of a foam insulation board such as a synthetic resin foam, and the inorganic A synthetic resin waterproof sheet is placed on the top surface of the inorganic protection flat plate, (1) an allowance for sealant tape is left on one side of the inorganic protection flat plate, and (2) there are floats on the other three sides to attach the sealant tape. Adhesive is not applied to the part so as to provide a pasting part, and (3) a lap joint piece is made to protrude from the side opposite to the side where the pasting allowance is provided, and it is adjacent to the side where the pasting allowance is provided. A heat insulating and waterproof material characterized by being bonded and laminated with an adhesive so that the two sides have the same dimensions as the inorganic protective flat plate.