KR20030070530A - A water-proofing method using waterproofingsheet of double layer - Google Patents

Abstract

PURPOSE: A waterproofing method using a multi-layered waterproof sheet is provided to secure excellent waterproof effect by forming a waterproof film layer, and to maintain the excellent initial-adhesive state. CONSTITUTION: The right side of a multi-layered waterproof sheet is hanged to the wall surface(C) of a structure and at the same time is adhered to the floor surface(D). A waterproof adhesive layer(F2), which is the lower layer of a first multi-layered waterproof sheet, is adhered to a lacking portion of the multi-layered waterproof sheet. A surface-protective layer(G1), which is the upper layer of the multi-layered waterproof sheet, is adhered to a lacking portion(F1') of a first multi-layered waterproof sheet. A waterproof-adhesive layer of a second multi-layered waterproof sheet is adhered to a lacking portion(F2') of the first multi-layered waterproof sheet adhered to the floor surface. A surface-protective layer(F1), which is the upper layer of the first multi-layered waterproof sheet, is adhered to the lacking portion of the second multi-layered waterproof sheet. A waterproof protective layer(H2) of a multi-layered waterproof sheet(H) is adhered to the lacking portion of the final waterproof sheet adhered to the floor surface of the structure. The surface-protective layer, which is the upper layer of the final multi-layered waterproof sheet, is adhered to a lacking portion(H1') of the multi-layered waterproof sheet and then is cut in accordance with the length of the wall of the structure. A paint film is formed by hang the cut portion to the wall surface and adhering the cut portion to the floor surface at the same time. Then, hot air of 450 deg.C is given to the painted film, and the compacting by a roller is performed. Thus, a surface layer is formed.

Description

Waterproofing method using double layer waterproof sheet {A WATER-PROOFING METHOD USING WATERPROOFINGSHEET OF DOUBLE LAYER}

The present invention is made by laminating a polyurethane sheet layer and rubberized asphalt layer obtained by recycling the discarded flexible polyurethane foam, or by using an EVA sheet laminated with EVA foam and a multilayered waterproof sheet laminated with asphalt or a waterproof adhesive layer. It relates to a waterproofing method, and more specifically, to a polyurethane sheet obtained by heat-melting a composition in which various modified additives are added to a polyurethane foam crushed product, which is a coaltal, a synthetic rubber petroleum resin, a kumarone resin, an aromatic undrying oil, a filler, etc. The present invention relates to a waterproof method using a multilayer waterproof sheet such as a polyurethane waterproof sheet laminated with a rubberized asphalt layer having a waterproof adhesive function and an EVA waterproof sheet laminated with a waterproof adhesive layer.

Conventional waterproofing method using a waterproof sheet having a multi-layer structure described above is a surface protective sheet layer (recycled polyurethane sheet layer or EVA sheet layer) and a waterproof adhesive layer (rubber asphalt layer, asphalt layer, as shown in Figure 1a and 1b), In the multi-layer waterproof sheet composed of another waterproof adhesive layer), the stacked width of the multilayer waterproof sheet (A) having a coincidence on one side of the width but having a defect on the other side, in other words, the surface protective sheet layer (A1) It is carried out using a multilayer waterproof sheet A as shown in Fig. 1A, which has a wide width and a narrow width of the waterproof adhesive layer A2, and thus has a defect A1 'without the waterproof adhesive layer A2 on the back surface of the surface protective sheet layer. In the conventional waterproofing method, as shown in the waterproof construction state diagram of FIG. 1B, first, the multilayer waterproof sheet B having the same width as that of the surface protective sheet layer B1 and the waterproof adhesive layer B2 starts from the wall surface D and the bottom surface. Bonded to (E) and this suit The defects A1 ′ formed on the back surface protection sheet A1 of the multilayer waterproof sheet A, which is formed on the surface of the widthwise periphery of the waterproof sheet B, and a part of the waterproof adhesive layer A2 are bonded to the bottom surface. Again, the part A1 'of the surface protection sheet A and a part of the waterproof adhesive layer A2 are adhered to the surface of one side of the peripheral edge of the multilayer waterproof sheet A already bonded to the bottom, and then repeatedly the multilayer waterproof sheet A ) When the double layer waterproof sheet (A) is adhered to the bottom surface and the roller is compacted, the waterproofing construction is completed, and cement or concrete mortar is poured on it, or polyurethane or epoxy resin is applied to surface finish treatment. Thus, the waterproofing method is completed.

Such a conventional method has a thick surface protective sheet (1.5 mm to 5 mm) such as a polyurethane sheet or an EVA sheet, and deforms the sheet itself by deforming the sheet itself due to stiffness, especially when the polyurethane sheet becomes a surface protective layer. Or, if the uneven portion is severely formed, circular return occurs due to deformation, and in particular, adhesion failure is likely to occur in the initial stage of adhesion, and the surface waterproofing layer or the waterproof adhesive layer are each made of the same material and do not form an integral connection with the whole layer. Since there are laminated adhesive surfaces in four layers between these materials, if the shear force occurs, the jungle phenomenon is severe, leading to defects, which leads to weakness and poor waterproofness, so that excellent waterproof function cannot be expected.

The present invention is a problem of the conventional waterproof method using a polyurethane waterproof sheet or an EVA waterproof sheet made of a laminated polyurethane sheet layer and a rubberized asphalt waterproof adhesive layer, which have a laminated structure of a surface protective layer and a waterproof adhesive layer. In the waterproofing method that solves the above problem, first of all, in the surface protection sheet layer and waterproof adhesive layer of the waterproof sheet as described above, using the waterproof sheet formed with any one of the defects along the periphery of the width, the joint phenomenon and the bottom adhesion are performed. It is possible to expect excellent waterproofing by forming an integral surface protection layer without a single surface protection layer and a full layer connection having both waterproof and adhesive functions, and to have excellent bends or curved surfaces when bonding a surface protection sheet having relatively stiffness. It can maintain the excellent initial adhesion state without giving a big deformation The purpose is to provide a waterproof method using a multi-layer waterproof sheet.

Figure 1a is a cross-sectional view of the waterproof sheet of the multilayer structure used in the conventional waterproof method

Figure 1b is a cross-sectional view of the waterproof sheet performed by the conventional waterproof construction method

Figure 2a is a cross-sectional view of a multi-layer waterproof sheet used in the waterproof method of the present invention

Figure 2b is a multi-layer waterproof sheet used in the start of the waterproofing method of the present invention

Cross-section

Figure 2c is a cross-sectional view of the multi-layer waterproof sheet used in the final step of the waterproof method of the present invention

Figure 2d is a cross-sectional view of the waterproof sheet carried out by the present invention waterproof method

The present invention relates to a waterproof method using a multi-layer waterproof sheet, that is, a waterproof sheet composed of a surface protective layer and a waterproof adhesive layer after construction, the waterproof (sheet layer) layer is connected to all layers can form a coating waterproof layer of the waterproof adhesive layer is integrated. And does not give a big deformation in the adhesion of the surface protection sheet layer, so that the joint is formed so that a large force having original return (return force) does not occur in the surface protection sheet. As specifically described, the structure of the multilayer waterproof sheet used in the present method is as shown in Figure 2a, the surface protective sheet layer (F1) and the waterproof adhesive layer (F2) staggered in the width direction in each layer (F1 ', F2') Is formed in the multilayer waterproof sheet (F), and one side as shown in Figure 2b is the surface waterproof layer (G1) and the waterproof adhesive layer (G2) is coincident, the other side is a multilayer waterproof sheet (G) formed with a defect (G1 '), and other Figure 2 c, one side is a double layer waterproof sheet (H) having a surface waterproof layer (H1) and a waterproof adhesive layer (G2) coincident with a defect portion (H2 '). As shown in FIG. 2B, the sheet side surface of the multilayer waterproof sheet G, which is the surface protective layer G1 and the waterproof adhesive layer G2, is brought into close contact with the wall surface C of the concrete structure and at the bottom surface D. The right end of the waterproof adhesive layer F2 laminated on the first multilayer waterproof sheet F is laminated on the defect portion G2 'of the multilayer waterproof sheet G, and the defect portion of the multilayer waterproof sheet F is laminated. The left end portion of the surface protective sheet layer G1 laminated on the multilayer waterproof sheet G is laminated on (F1 '), and the second multilayer waterproof sheet is disposed on the defect portion F2' of the first multilayer waterproof sheet F. FIG. The right end of the waterproof adhesive layer (F2) laminated on (F) is layered to match, and the missing portion (F1 ') of the second multilayer waterproof sheet (F) is the first multilayer waterproof sheet (F). The process of laminating and matching the left end of the surface protective sheet F1 is extended to the third and fourth multilayer waterproof sheets F repeatedly, and the deficiency of the final multilayer waterproof sheet F adhered to the bottom D by the finishing process. Match the right end of the waterproof adhesive layer H2 laminated on the multilayer waterproof sheet H to the portion F2 ', and at the same time, the final multilayer waterproof sheet (H2') formed on the defect portion H2 'formed on the multilayer waterproof sheet H. Match the left end of the surface protective sheet layer F1 laminated on F) and cut the composite waterproof sheet H to a length corresponding to the left wall C of the structure to bring the cut portion into close contact with the wall and at the same time the bottom ( D) After coating is completed, the coating film is completed and hot air around 450 ℃ is heated on it to compact the rollers in the state of softening the surface protective layer and waterproof adhesive layer.The bottom and waterproof adhesive layer, the surface protective sheet and the surface protective sheet are integrated. Adhesion between the sheet, the surface protective sheet and other waterproof adhesive layers Then phase.

After this process is completed, a surface layer is formed by coating epoxy or polyurethane paint on roofs, balconies, indoor floors, etc., which are formed on a cement or concrete mortar on a conventional method, or on roofs, balconies, indoor floors, etc., which are relatively low in strength.

The feature of the waterproof method is that the waterproof adhesive layer according to the present invention in the multi-layer waterproof sheet is connected to the entire layer to form an integral waterproof coating layer has excellent waterproofing function, and the surface protective sheets are strongly bonded by heat fusion. Since the whole layer is integrated and the surface protection sheet with large circular return is not largely applied to the surface protection sheet, the bending or irregularities in the plane form are not large. It is a method that can greatly reduce the incidence of adhesion failure by smoothly.

Claims (1)

The right side of the double layer waterproof sheet (G) closely adheres to the wall surface (C) of the concrete structure, and adheres to the bottom surface (D), and the first double layer waterproof sheet is formed on the missing portion (G2 ') of the double layer waterproof sheet (G). The waterproof adhesive layer F2, which is the lower layer of (F), is brought into close contact with each other, and the surface protective layer G1, which is the upper layer of the multilayer waterproof sheet G, adheres closely to the defect portion F1 'of the first multilayer waterproof sheet F. To the defect portion F2 'of the first double layer waterproof sheet F bonded to the bottom surface D, and the waterproof adhesive layer F2 of the second double layer waterproof sheet F is adhered to and adhered to the second layer. The third and fourth multilayer waterproof sheets (15) are formed by repeated operations in which the surface protection layer (F1), which is the upper layer of the first multilayer waterproof sheet (F), is brought into close contact with the defect portion (F1 ') of the multilayer waterproof sheet (F) F) and the waterproof adhesive layer (H2) of the double-layer waterproof sheet (H) is adhered to the defect (F2 ') of the final waterproof sheet (F) bonded to the bottom (D) of the structure by the sheet bonding finishing process. Double layer waterproof The surface protection layer F1, which is the upper layer of the final multilayer waterproof sheet F, is adhered closely to the defect H1 'of the sheet H, and the cut portion is cut to a length suitable for the wall C of the structure and the cut portion is closely attached. After applying to the bottom surface (D) at the same time to complete the coating construction work by applying hot air around 450 ℃ on the top of the roller to form a surface layer in a waterproof method using a double layer waterproof sheet, characterized in that.