KR20090110034A - Butylene Rubber Waterproof Sheet, Complex Waterproof Constructing Method Using the Same and Waterproof Structure - Google Patents

Abstract

PURPOSE: A butylene rubber waterproof sheet, a complex waterproof layer constructing method using the same and a waterproof structure thereof are provided to improve the tensile strength by forming the complex waterproof layer by integrally putting a multiple film layer on a butylene rubber waterproof sheet. CONSTITUTION: A complex waterproof layer constructing method using a butylene rubber waterproof sheet is composed of the steps of forming a bonding layer(3) by coating the base surface with a primer, forming a waterproof layer(5) by coating the bonding layer with waterproof material, forming the butylene rubber waterproof layer on the waterproof layer to increase the adhesion property, and forming a sheet waterproof layer(700) by installing plural butylene rubber waterproof sheets having a multiple film layer for protecting the butylene rubber waterproof layer on the butylene rubber waterproof layer.

Description

Butyl rubber waterproof sheet, complex waterproof constructing method using the same and waterproof structure

The present invention relates to a butylaba waterproof sheet, a composite waterproof construction method and a waterproof structure using the same, in particular, excellent adhesion and elongation can be very easily formed water-tight adhesion between the sheet and the sheet even in the cold air method, the lower coating film Butyllava waterproof sheet that can achieve a perfect composite waterproof layer by integrating with the waterproof layer, and a composite waterproof construction method and waterproof structure using the same.

In general, leaks and condensation due to cracks occur on the base of inorganic materials such as concrete or mortar forming a building, and this problem plays a role in facilitating aging of the building by weakening the durability of the building. Therefore, in order to eliminate the cause of such defects, the external waterproofing of the roof / outer wall of the building uses a sheet waterproofing method using a waterproof sheet, a film waterproofing method using a film waterproofing material, and a composite film waterproofing method using a sheet and a film together. have.

Looking at the advantages and disadvantages of the conventional waterproof method as follows.

First, the synthetic polymer sheet waterproof method has the advantage of easy construction because it uses a synthetic polymer sheet, but is easy to be damaged because of the thin, there is also a problem of watertightness. In addition, in the case of using this method, there is a problem in that a sheet for civil engineering is used in combination and the protective layer must be ensured.

In addition, the improved asphalt sheet waterproofing method is applied to underground waterproofing because the improved asphalt sheet is attached to the torch burner to secure watertightness by some training. The improved asphalt sheet waterproofing method is currently the most commonly used method is a method of unfolding and attaching the sheet to the concrete slab in the molten state by heating the asphalt attached to the back of the waterproof sheet with a propane gas burner (torch burner). .

The improved asphalt sheet has a non-woven reinforcing sheet is heat-sealed on one side with the same size as the asphalt sheet, and the other side of the asphalt sheet is attached with a release paper for preventing the adhesive sheet from being adhered to each other during production.

Such improved asphalt has a problem of poor installation workability and difficulty in securing watertightness of the joint part because the asphalt must be subjected to reinforcement work after the front attachment to the concrete slab of each asphalt sheet and the joint part treatment between the asphalt sheets.

Korean Patent Laid-Open Publication No. 1999-31067 discloses a composite waterproof structure that takes advantage of the asphalt sheet and the polyurethane coating waterproof material to enhance the watertightness of the joint portion and improves the adhesive strength by improving the asphalt sheet structure to compensate for the disadvantages. The construction method is disclosed.

The waterproof structure allows the end portions of the joints to be laid on the upper surface of the slab layer while maintaining a predetermined distance from each other. The base waterproof sheet is formed to protrude, and a polyurethane layer formed by applying a liquid polyurethane on the upper surface of the base waterproof sheet.

When using a liquid polyurethane to secure the watertightness between the sheet and the sheet there is a problem that the applied polyurethane takes a long time to cure the construction period is long.

In order to solve the problem of the use of the liquid coating film waterproofing agent, Korean Patent Laid-Open No. 2001-18221 proposes an improved waterproof sheet and a composite coating waterproofing method using the same.

This construction method is simple by the construction of the waterproof sheet joint by changing the structure of the various waterproof sheet used in the composite coating waterproof construction and can be carried out without reinforcing the joint joint, improving the workability (simpleness) of the construction work The present invention relates to an improved waterproof sheet capable of completely waterproofing a joint part and a composite coating waterproofing method using the same.

The improved waterproof sheet includes a waterproof sheet body having a waterproof function, a non-woven fabric that is heat-sealed in a state of being displaced from the waterproof sheet body by a predetermined length to a side which is overlapped with an adjacent waterproof sheet, and constructed by a joint, and a lower surface of the waterproof sheet body. Consists of a release material layer attached to the, the waterproof sheet body is characterized in that the exposed portion is formed in a portion that is jointed with the overlapping adjacent waterproof sheet.

On the other hand, asphalt waterproofing method (heating method) as one of the waterproof film coating, but if the three to four roofs overlap each other, the risk of permeability is less and the thickness is less likely to damage the waterproof layer. However, this method has a problem of high temperature molten asphalt when it is installed on a high wall surface, because water is likely to occur during the curing of molten asphalt, there is a problem that the reliability of the waterproof can not be expected and there are not many skilled functional workers. .

The liquid waterproofing method has the advantage of being able to use on the basis of the movement because of the low number of processes, the construction is simple, the thickness of the waterproof layer is constant, and the elongation and crack resistance is possible. However, this method is difficult to find the cause of the leakage of the joint and the end, it is difficult to find the cause of the leak, it is insulated from the sphere, the swelling and rupture occurs well, there is no breathability, degassing device is required, and as the organic material deterioration with age well There is a problem that occurs.

In the coating film waterproofing method, Korean Patent Laid-Open Publication No. 2000-72868 uses a water-soluble acrylic one-component elastic coating waterproofing composition to form a coating film having high elasticity and high strength, first forming an adhesive layer with a primer, and applying a plurality of coating waterproofing agents to a plurality of waterproof films. After forming, the coating film waterproofing method of forming a protective film on the waterproof film is disclosed.

However, this method has a disadvantage in that construction takes a long time to cure the adhesive layer and the coating film waterproofing agent, resulting in poor workability and low tensile strength (tensile strength vs. elongation rate) indicating waterproofing performance of the waterproofing layer.

Patent Publication No. 2000-72869 discloses coating of an inorganic elastic composite coating on a base sheet to provide breathability and moisture permeability, thereby improving durability, weather resistance, and workability (simpleness) of construction work. Since the construction is made by the partial adhesive, there is disclosed a composite coating waterproof sheet and a composite coating waterproofing method using the same, which is not affected by the cracking layer of the mother.

This method of construction partially adheres the lower surface of each of a plurality of waterproof sheets (polyethylene (PE) -based hard (soft) sheets), each of which has a nonwoven fabric attached to its surface, on the base surface, and at the same time, the periphery of the sheet After sealing by overlapping by a certain width, forming an adhesive layer by applying a primer on the upper surface of the waterproof sheet, and then applying an inorganic elastic coating waterproofing agent at least once on the upper surface of the adhesive layer to form a waterproof film, and a protective film on the upper surface of the waterproof film It consists of forming a step.

The composite coating waterproofing method is to apply a primer to the upper surface of the waterproof sheet when forming a waterproof film to form an adhesive layer and then to apply a coating film waterproofing agent, there is a problem that a long waiting time due to the curing of the primer and the coating film waterproofing agent, press When the method is applied, it is necessary to form a protective film with a waterproofing layer protective agent on the upper surface of the waterproofing film.

Since the construction method is basically made by wet construction, construction work according to wet construction is cumbersome and inconvenient, and a lot of construction costs are spent, as well as an extension of working time due to curing of the primer and waterproofing agent (winter). This is delayed and there is a disadvantage that the tensile strength is lowered. In addition, the coating film waterproofing method has a disadvantage in that the tensile strength (tensile strength ㅧ elongation rate) showing the waterproof performance of the waterproof layer is lower than the waterproof sheet.

On the contrary, in the conventional sheet waterproofing method, construction of the process of forming an adhesive layer with a primer to adhere the primary waterproof sheet, waste of raw materials due to overlapping of the sheet and the sheet, and difficulty of securing the watertightness of the joint part This exists.

In addition, when the double sheet waterproof is adopted, damage and deformation of the primary sheet are greatly generated, thereby affecting the watertightness, and the working time is long due to the primary and secondary heat fusion. In the case of the conventional double sheet waterproof, there is an advantage in that the tensile strength is increased, but there is a problem that the waterproof quality is not high compared to the high material cost / construction cost.

On the other hand, in general, asphalt sheets or butyllava sheets, which are used as sheet waterproofing materials, generally use reinforcing materials such as glass fibers or polyester nonwoven fabrics in the sheet for reinforcement of tensile strength. Nonwoven fabric, woven fabric, etc. are adhere | attached in order to improve the adhesive force with a coating film material.

Therefore, the present invention has been made in view of the problems of the prior art, the object of which is to provide a low temperature flexibility, room temperature heat resistance, stable weather resistance, aging resistance and chemical resistance, and also excellent adhesion and elongation to the sheet by cold air method Watertight adhesion between them can be made very easily, and to provide a butyllava waterproof sheet that can form a complete composite waterproof layer by integrating with the waterproof film of the lower layer.

Another object of the present invention is to maximize the tensile strength by integrally stacking a multi-film layer (PET (Polyethylene Terephthalate), LDPE (Low Density Polyethylene), HDPE (High Density Polyethylene)) on top of the butyllava waterproof sheet It is to provide a butyllava waterproof sheet that does not break even in the degree of external force.

Another object of the present invention is to attach a butyllava waterproof sheet having excellent adhesive strength immediately before curing the coating waterproof layer made of urethane, so that the butyllava reacts with the thinner component of the urethane to form an integral layer with the urethane. The present invention provides a composite waterproof construction method and a waterproof structure that can realize a heavy waterproof structure.

Another object of the present invention is to provide a composite waterproof construction method and waterproof structure that can achieve a waterproof structure with excellent tensile strength as a whole by implementing a strong waterproof structure of a double composite waterproof layer consisting of butylaba waterproof sheet and a coating waterproof layer.

Still another object of the present invention is to form a waterproof film layer at the time of construction of the waterproof sheet, it is possible to construct a sheet waterproof layer using a butyllava waterproof sheet immediately without undergoing a long curing period as in the prior work according to the curing of the coating film waterproofing agent It is to provide a composite waterproof construction method and waterproof structure that can solve the shortcomings of delayed shortening of construction period due to extended time.

Another object of the present invention is that it is not necessary to use a separate adhesive between the joints between the waterproof sheet, waterproof construction is easy and can proceed quickly and does not occur separation over time composite waterproof construction to form a reliable waterproof structure To provide a method and a waterproof structure.

Another object of the present invention is to eliminate the material cost loss due to the overlap of the sheet by overlapping the sheet and the sheet when constructing the waterproof sheet or the butt joint portion with the adhesive tape for the joint and then watertightly bonded It is possible to provide a complex waterproof construction method and waterproof structure that can shorten the air can be easily and fast construction.

In order to achieve the above object, according to a first aspect of the present invention, the butylava waterproof sheet of the present invention is a butylava layer made of butylava; Release paper detachably attached to a lower portion of the butylava layer; And a polyethylene terephthalate (PET) film layer having a high tensile strength, a low density polyethylene (LDPE) film layer stacked on the PET film layer, and the LDPE film layer stacked on the butyllava layer. It is integrally bonded with the film layer, and a multi-film layer consisting of a HDPE (High Density Polyethylene) film layer to protect the butylaba layer from external impacts.

According to a second aspect of the present invention, a butylaba waterproof sheet comprises a butylalava layer made of butylaba; And a polyethylene terephthalate (PET) film layer having a high tensile strength, a low density polyethylene (LDPE) film layer stacked on the PET film layer, and the LDPE film layer stacked on the butyllava layer. It is integrally bonded with the film layer, and a multi-film layer consisting of a HDPE (High Density Polyethylene) film layer to protect the butylaba layer from external impacts.

In addition, the butilaba waterproof sheet may further include an adhesion reinforcing layer made of a nonwoven fabric including long fibers in the lower portion of the butilaba layer.

According to a third aspect of the present invention, a composite waterproof structure using a butilaba waterproof sheet is an adhesive layer formed by applying a primer on the base surface; A coating film waterproof layer formed by coating a urethane coating film waterproofing material on the adhesive layer; And a sheet waterproof layer formed on the coating film waterproofing layer to have adhesion to the coating film waterproofing layer, and having a self-adhesive butyllava layer, and a multi-film layer formed on the butyllava layer to protect the butyllava layer. And the thinner component contained in the butyllava and urethane coating waterproofing materials of the plurality of butyllava waterproofing sheets react to form the integral layer with the coating waterproofing layer.

According to a fourth aspect of the present invention, a composite waterproof structure using a butylaba waterproof sheet includes an adhesive layer formed by applying a primer on a base surface; A coating film waterproof layer formed by coating a coating film waterproofing material on the adhesive layer; And a butyllava layer having self-adhesion property is formed on the coating film waterproofing layer to increase adhesion to the coating film waterproofing layer, and a plurality of butyllava coatings having a multi-film layer formed thereon to protect the butyllava layer. It characterized in that the sheet is a waterproof layer made of a joint in the overlapping or abutment manner between each other between the adjacent waterproof sheet.

The composite waterproof structure using the butylalava waterproof sheet according to the third and fourth features may include the PET (Polyethylene Terephthalate) film layer having the multi-layered film laminated on the butylalava layer and having high tensile strength; A Low Density Polyethylene (LDPE) film layer laminated on the PET film layer; And a high density polyethylene (HDPE) film layer laminated on the LDPE film layer to be integrally bonded to the PET film layer, and protecting the butylaba layer from external impact.

In addition, the sheet waterproofing layer may further include an adhesion reinforcing layer made of a non-woven fabric including long fibers formed under the butyllava layer to increase adhesion between the coating film waterproofing layer and the sheet waterproofing layer.

In addition, the joint layer formed by attaching a joint adhesive tape having a predetermined width on the coating film waterproof layer so as to overlap the lower portion of the butylaba waterproof sheet butted with each other, in order to watertight joint the butyllava waterproof sheet; It may further include.

According to a fifth aspect of the present invention, a composite waterproof construction method using a butyllava waterproof sheet comprises the steps of: applying a primer on the base surface to form an adhesive layer; Forming a coating waterproof layer by applying a coating waterproofing material on the adhesive layer; And a butyllava layer having self-adhesion property is formed on the coating film waterproofing layer to increase adhesion to the coating film waterproofing layer, and a plurality of butyllava coatings having a multi-film layer formed on the butyllava layer to protect the butyllava layer. Forming a sheet waterproofing layer by installing a sheet; wherein the coating film waterproofing layer is made of a urethane coating waterproofing material, and the thinner component of the plurality of butyllava waterproofing sheets reacts with the thinner component of the urethane coating waterproofing material. The butylara waterproof sheet of the plurality of butylara waterproof sheet is characterized in that it is attached on the coating film waterproofing layer before curing the coating film waterproofing layer to form an integral layer with the coating film waterproofing layer.

According to a sixth aspect of the present invention, the composite waterproof construction method using a butylalava waterproof sheet comprises the steps of: applying a primer on the base surface to form an adhesive layer; Forming a coating waterproof layer by applying a coating waterproofing material on the adhesive layer; And a butyllava layer having a self-adhesive force is formed on the coating film waterproofing layer to increase adhesion with the coating film waterproofing layer, and a plurality of butyllava coatings having a multi-film layer formed on the butyllava layer to protect the butyllava layer. The sheet is installed in the longitudinal direction adjacent to each other butyllava waterproof sheet in an overlapping manner, and the plurality of butyllava waterproof sheet adjacent to each other in the width direction to form a sheet waterproof layer; characterized in that it comprises a.

The composite waterproof construction method according to the fifth and sixth features may further include forming a protective layer for protecting the sheet waterproof layer on the upper surface of the multiple film layers of the plurality of butylava waterproof sheets.

The composite waterproof construction method according to the fifth and sixth features may further include attaching a joint adhesive tape to a joint area of the butyllava waterproof sheet to be in contact with each other before forming the sheet waterproof layer.

In this case, the adhesive tape for the joint may be composed of a butyl lava layer made of butyl lava, respectively, and a reinforcing material formed on top of the butyl lava layer.

In addition, the coating film waterproofing layer is made of a urethane coating film waterproofing material, as the butylara bar of the plurality of butillaba waterproofing sheet and the thinner component contained in the urethane coating waterproofing material reacts flexibly to change the physical properties of the plurality of butylolara waterproofing sheet In order to form an integral layer with the coating waterproof layer, it is preferable that the plurality of butylava waterproof sheets are attached on the coating waterproof layer before the coating waterproof layer is cured.

Furthermore, the multi-film layer is laminated on the butylava layer, PET film layer having a high tensile strength; An LDPE film layer laminated on the PET film layer; And an HDPE film layer laminated on the LDPE film layer to be integrally bonded to the PET film layer, and protecting the butylava layer from an external impact.

In addition, the adhesion reinforcing layer made of a non-woven fabric including a long fiber formed in the lower portion of the butylaba layer in order to increase the adhesion between the coating film waterproof layer and the sheet waterproof layer may further include.

The physical properties of the butylaba forming the main body of the above-described butylava waterproof sheet will be described.

Butyllava, or butyl rubber (Isobutylene-Isoprene Rubber), isobutylene with a purity of 99% or more, 1.5-4.5% isoprene mixture, pure methyl chloride, anhydrous aluminum chloride as a catalyst, and then put into a polymerization reactor. It is made by polymerization at low temperatures.

In general, butyl rubber is resistant to heat and ozone oxidizers because it is resistant to climate change and contains less unsaturated bonds. It also has excellent electrical insulation and absorbs shocks. Since the elastic body does not crystallize well, it is flexible even at a temperature as low as -50 ℃, and its gas permeability is very small compared to natural rubber, and it is mainly used as an inner tube of a tire and used as an electric wire or an industrial building material.

Butyl lava is more than 99% non-volatile content like dairy products, so the same quality is always maintained.Adhesive strength is low temperature flexibility at -30 ℃ and low heat resistance at 120 ℃. It does not require a subsequent process and has the following characteristics in terms of waterproofing material.

1) Easy construction

The operation can be performed simply by laminating on the coating film waterproofing material applied to the primer layer, and in the case of laminating the butylaba waterproofing sheet before the coated coating waterproofing material is cured, the thinner component of the urethane reacts with the butyllava and flexibly integrates. To form a perfect double waterproof structure.

2) Stable weather resistance

Butyllava waterproof sheet solves the problem of the temperature sensitivity, which is a disadvantage of asphalt, and maintains the stable physical properties continuously regardless of time.

3) Strong adhesion and extensibility

Butyllava waterproof sheet has a resilience against the concrete matrix, so the waterproof layer does not rupture in the mother crack or minor cracks, showing a clear waterproof effect.

4) Excellent chemical resistance

Butyllava waterproof sheet is composed of polymer with excellent chemical resistance and has excellent chemical resistance such as alkali resistance, acid resistance and corrosion resistance.

As described above, in the present invention, as the waterproof sheet, butyllava, which has various physical properties, is adopted as the main body of the waterproof sheet, and the waterproof sheet is installed on the upper layer of the coating layer before curing of the coating layer waterproof layer made of urethane coated on the primer layer. As the thinner components of butylaba and urethane react with each other flexibly, a strong waterproof structure of a double composite waterproof layer composed of an integral coating film waterproof layer and a butyllava sheet can be obtained, thereby obtaining an excellent waterproof structure as a whole.

In addition, the present invention, as well as perfect waterproofing function as described above and gating, by maximally laminating the triple film layer (PET, LDPE, HDPE) on the butyl lava layer to maximize the tensile strength of the butyl lava waterproof sheet waterproof by external force The sheet may be torn or scratched.

In addition, the present invention also can be easily self-installed without using a separate adhesive waterproofing for the joint portion between the waterproof sheet, waterproof construction can be easily and fast to proceed.

Furthermore, when the waterproof sheet is constructed, when the sheet and the sheet are butt-bonded with the adhesive tape for the joint, the loss of material cost due to the overlapping of the sheets can be minimized and the construction can be easily and quickly proceeded. The air can be shortened, and the adhesive tape is selected from a material containing butylaba made of the same material as that of the butylaba sheet, so that no separation occurs over time, thereby forming a reliable waterproof structure.

Moreover, the waterproof structure of the present invention has high elasticity, tensile strength and elasticity, which can withstand high water pressure, high tensile strength, so that it can withstand cracking of the floor surface by severe vibration, and change of physical properties even with temperature change. It is excellent in stability against UV rays and infrared rays, and shows high adhesion to any floor or wall surface such as concrete, metal, wood, plasterboard, and plastic.

Waterproofing method of the present invention can be applied to waterproof construction of civil engineering and buildings that need waterproofing, such as rooftop and underground parking lot, swimming pool, subway, public sphere.

(Example)

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a composite waterproof construction structure using a butyllava waterproof sheet according to the first embodiment of the present invention, Figure 2 is a composite waterproof construction using a butyllava waterproof sheet according to the first embodiment of the present invention 3 and 4 are cross-sectional views taken along line III-III and IV-IV of FIG. 2 for explaining the waterproof construction method according to the first embodiment of the present invention, and FIG. 6 is a perspective view showing the structure of the butylaba waterproofing sheet according to the first embodiment, and FIG. 6 is a cross-sectional view showing the structure of the butylava adhesive tape used in the present invention.

Referring to Figure 1 when explaining the composite waterproof construction method using a butyllava waterproof sheet according to the first embodiment of the present invention.

During the waterproof construction, first, the sales work is carried out so that smooth drainage of the ground surface of the concrete slab 1 is performed as a pretreatment step. After removing the foreign material, that is, soil, sand, etc. on the base surface, the corners, corners, etc. are rounded and cracks are formed or broken on the base surface to reinforce the weak parts such as the depressions. In this case, it is preferable that the base surface is dried so that the moisture content is within 10%.

Subsequently, for example, a primer of the same series as the coating waterproofing agent, that is, a urethane series primer, is evenly applied at 0.3 to 0.4 kg / m 2 using a brush, rubber spatula or roller to dry for 4 to 6 hours. The adhesive layer 3 is formed by this.

Then, the coating film waterproofing material which consists of urethane is apply | coated on the upper part of the apply | coated adhesive layer 3 so that it may become thickness of about 1 mm-1.5 mm, and the coating film waterproofing layer 5 is formed. In this case, the coating film waterproofing material is preferably made of non-tar urethane.

Subsequently, before the coating film waterproofing layer 5 applied to the adhesive layer 3 is cured, as shown in FIG. 2, a plurality of butyllava waterproof sheets 7a-7d in roll form are sequentially disposed on the coating film waterproofing layer 5. Construction to form a sheet waterproof layer 700.

In this case, the construction of the butylaba waterproof sheet (7a-7d) is a crimping construction by using a hand pressing or pressing in the vertical direction after removing the release paper attached to the lower surface without additional equipment and tools, the base surface Considering the gradient, proceed from low to high.

As described above, in the present invention, it is preferable to attach the butylaba waterproof sheet 7a-7d before the coating film waterproofing layer 5 is cured, and this is included in the butylava waterproof sheet 7a-7d and the urethane which is the coating film waterproofing material. After the thinner component reacts, the adhesive surface of the butylalava waterproof sheet is melted by changing its physical properties flexibly. As the butylara waterproof sheet (7a-7d) forms an integral layer with the coating waterproof layer 5, a perfect double waterproof structure can be realized. Can be.

5, the butyllava waterproof sheet 7 has a butyllava layer 73 as a main body, and a release paper or a release film 71 is attached to the lower portion to prevent adhesion with other portions. Attached to this is a multi-film layer 77 consisting of triple stacked films so that the butilaba waterproof sheet 7 can have high tensile strength.

The multiple film layer 77 is laminated with a polyethylene terephthalate (PET) film layer 77a, a low density polyethylene (LDPE) film layer 77b, and a high density polyethylene (HDPE) film layer 77c.

Butyllava waterproof sheet 7 of the present invention does not include a separate reinforcement such as glass fibers in the body of the conventional butyllava layer 73, it is that the coating film waterproof layer is raised on the upper surface of the waterproof sheet (7). Since it does not use a non-woven fabric for strengthening the adhesion, instead of constructing a multi-layered film layer 77 of a low material cost to reinforce this function.

First, the PET film layer 77a in the multi-film layer 77 belongs to the toughest film among plastic films, has excellent electrical properties, has a high elastic modulus, and may be used as an extremely thin film. In addition, the PET film layer 77a has high strength, transparency, and impact resistance, and has a large tensile strength, which is three times as large as cellophane and 10 times as large as polyethylene, and is close to aluminum. And less change depending on the temperature, can be used widely in the temperature range available from -60 ℃ to +150 ℃. The transmittance of water vapor and gas is also small. The PET film layer 77a has a disadvantage in that the tensile strength is large and the adhesion with the butyllava layer 73 below is excellent while the rigidity is low.

LDPE film layer 57b generally includes impact resistance, low temperature embrittlement resistance, flexibility, processability, transparency of film, chemical resistance, water resistance, electrical insulation, and the like, and is a soft material that is not easily torn. The intermediate layer serves as a connection layer for connecting the 57c and the lower PET film layer 57a.

The HDPE film layer 57c is a rigid molding material, which is resistant to impact, has good temperature resistance, and has a wide temperature range. However, the HDPE film layer 57c has disadvantages of low tensile strength and tearing well. The HDPE film layer (57c) serves to protect the butylaba layer (73) from external impact when a concrete pressing layer or the like is installed on the top thereof, and the physical properties such as insufficient heat resistance and low tensile strength are PET film layer ( Complemented by 77a).

The multi-film layer 77 composed of a PET film layer 77a, an LDPE film layer 57b, and an HDPE film layer 57c has excellent impact resistance but is not directly adhered to the butylava layer 73. The PET film layer 77a solves the shortcomings of the layer 57c, and the LDPE film layer 57b compensates for the low tensile strength of the HDPE film layer 57c. It can have physical properties.

The butilaba waterproof sheet 7 of the present invention can be produced in a roll form with a size of, for example, 20 m (length) ㅧ 1 m (width)) 1 mm (thickness).

Incidentally, the longitudinal construction of the butylalava waterproof sheets 7a and 7c adjacent to each other is performed in an overlapping manner.

In this longitudinal construction, first, the release paper 71 is removed and the waterproof sheets 7a and 7c are sequentially attached from one side of the base surface to the other side, in which case the waterproof sheet 7a and the waterproof sheet 7c. 3, one end of the waterproof sheet 7c is overlapped by about 7 cm with one end of the waterproof sheet 7a so as to form an overlap region 70. In this case, the upper surface of the waterproof sheet 7a has the HDPE film layer 57c of the multi-film layer 77 having a smooth surface, and the lower surface of the waterproof sheet 7c has the excellent adhesive force butyllava layer 73. Because of this arrangement, the adhesive part of the overlap region 70 between the upper surface of the waterproof sheet 7a and the lower surface of the waterproof sheet 7c is strongly adhered to secure water density, resulting in waterproofing. The longitudinal joint portion between the sheet 7a and the waterproof sheet 7c has excellent waterproof performance.

Subsequently, the widthwise construction is performed in an overlapping manner similar to the longitudinal construction. In this case, in the case of using an asphalt sheet or a sheet made of another material, it is generally necessary to reinforce the construction to prevent leakage of the joint part when constructing in an overlapping manner. In the present invention, since the adhesive butyllava is adhered to the multiple film layers 77 of the adjacent waterproof sheet 7, no leak-proof reinforcement construction is required.

On the other hand, in the widthwise construction, it is also possible to construct the joint portion in a butt manner as shown in Figs. 2 and 4. That is, the widthwise construction of the butt method is performed in the waterproof sheet 7a, 7c of the first column C1 before the construction of the waterproof sheet 7a, 7c of the first column C1 performed in the longitudinal direction is completed. On one side, the joint adhesive tape 8 having a width corresponding to the joint area 70a is first placed at the position where the waterproof sheets 7b and 7d of the second column C2 are to be joined to each other. Construct at right angles to the.

Subsequently, the waterproof sheets 7b and 7d of the second column C2 are constructed to one side of the waterproof sheet of the first column C1 through the above-described longitudinal connection construction. In this case, the waterproof sheets 7a, 7b; 7c, 7d of the first and second columns C1, C2 are constructed in a butt manner so as to be in close contact with each other.

As described above, although the adhesive tape is not attached to the butted portions of the waterproof sheets 7a, 7b; 7c, and 7d of the adjacent columns C1 and C2, the coating film waterproof layer 5 located below the sheet waterproof layer 700 and To achieve a strong bond to achieve a strong waterproof, but in order to increase the waterproofing performance with a more robust connection, the waterproof sheets (7a, 7b; 7c, 7d) of adjacent columns (C1, C2) are bonded to the joint tape (8) Can be reinforced by.

The joint adhesive tape 8 may be, for example, a butylaba layer 83 made of butyl lava (Butyl Rubber) having excellent heat resistance, cold resistance, durability, watertightness, and adhesion as shown in FIG. A glass fiber or polyester nonwoven fabric having excellent strength as a reinforcing material 85 is formed on the upper part of the sheet), and both sides are finished with release papers 81a and 81b, each having a thickness of 1.0 to 1.2 mm and a width of 10 to 15 cm. It can be used in the form of double-sided adhesive tape. In this case, the adhesive adhesive tape 8 for the joint is removed from the lower release paper 81a and pressed with a rubber roller or the like in the state where the upper release paper 81b is attached to the joint area. The upper release paper 81b is removed before constructing the waterproof sheets 7a, 7b; 7c, 7d of (C1, C2).

On the other hand, since the butylaba layer 73 of the waterproof sheet 7a-7d has a very good self-adhesive force as described above, when the joint adhesion is made with the butylava layer 83 of the adhesive tape 8 for joints, strong adhesion is achieved. This is done. As a result, the widthwise joint portions of the waterproof sheets 7a, 7b; 7c, and 7d of the columns C1 and C2 adjacent to each other have an excellent watertight structure. Furthermore, a reinforcing material 85 such as glass fiber or polyester nonwoven is formed on the upper surface of the adhesive tape 8 for the joint, thereby increasing the strength of the joint structure.

After that, before forming the protective layer, drain all the drained parts of the waterproofed site, fill the water to a depth of 75 mm, and observe for at least 24 hours to check for leaks. If no abnormality occurs in this freshwater test, proceed to the protective layer formation process.

That is, in the case of the exposure method, a well-known top coating material is finished on the multiple film layer 77 of the butylava waterproof sheet 7, and in the case of the non-exposure method, on the multiple film layer 77 of the butylava waterproof sheet 7. The protective layer 9 is formed by applying a protective mortar (about 50 mm or more) or a waterproof layer protective material (board), etc. to protect the waterproof layer according to a known method, and then applying cement mortar to the pressing layer to finish it. See FIG. 1).

As described above, in the composite waterproof construction method using the butylaba waterproof sheet and the coating film waterproofing agent according to the first embodiment of the present invention, butyllava, which is the main material of the butyllava waterproof sheet, has both low temperature flexibility and heat resistance at the same time, thereby affecting the surrounding environment. It is possible to construct without receiving, and also because of its high tensile adhesive strength and elongation rate, it is possible to construct by self-adhesive without the need for additional heat or the need for subsequent process.

In addition, the present invention can be installed directly on the waterproof layer of the coating layer in the state before curing without drying during the waterproofing of the conventional coating film, it is possible to greatly shorten the construction period, and the coating film waterproof layer is the physical properties of the butylaba If the reaction is made of a material that is smooth, for example urethane, etc., it is possible to implement a waterproof structure of a strong double composite waterproof layer consisting of a coating film waterproofing layer and a butylara sheet.

In addition, the joint part (overlap area) in the length direction with respect to the joint part between adjacent sheets, which is the most important in sheet waterproofing, has excellent adhesive strength, so that self-adhesive bonding is possible, thereby forming a strong and perfect waterproof structure, and in the width direction The joint part (joint area) can be constructed in a butt structure using an overlapping method or an adhesive tape 8 for the joint, thereby maximizing more solid connection and watertightness.

Figure 7 is a schematic plan view showing a composite waterproof construction method using a butyllava waterproof sheet according to a second embodiment of the present invention.

The composite waterproof construction method using the butylalava waterproof sheet according to the second embodiment of the present invention is made through a similar construction procedure to the first embodiment, except that the composite waterproof construction method of the first embodiment is a plurality of butyl It is the point that the adhesive tape for joint is used for both longitudinal and width connection without applying the overlap method for the Lava waterproof sheet.

That is, as shown in FIG. 7, portions of the waterproof sheets 7a and 7c which face each other along the joint area 70b of the portions to be butted to each other in the longitudinal direction of the waterproof sheets 7a and 7c are respectively. The joint adhesive tape 80 is attached in advance so that the joint adhesive tape 80 is positioned in 1/2 of the joint adhesive tape 80. The joint adhesive tape 80 may strengthen the connection between the waterproof sheets 7a and 7c and at the same time waterproof the butt joints of the waterproof sheets 7a and 7c.

Subsequently, the connection construction of the waterproof sheets 7a and 7c in the longitudinal direction, the adhesive tape 80 for joints previously attached onto the coating film waterproofing layer 5 in a butt manner so as to closely contact each sheet and the sheets 7a and 7c. ), And in this case, the coating film waterproofing layer 5 is attached on the coating film waterproofing layer 5 before curing.

Thereafter, the connection construction of the widthwise waterproof sheets 7a, 7b; 7c, 7d is the same as that of the widthwise connection construction of the first embodiment, and thus description thereof is omitted.

Figure 8 is a cross-sectional view showing another embodiment of the butyllava waterproof sheet used in the present invention.

Butyllava waterproof sheet 7 used in the composite waterproof construction method according to the first and second embodiments described above is a release paper 51 is attached to maintain the adhesive force of the butyllava layer 73 at the bottom, In the composite waterproof construction of the present invention, as shown in FIG. 8, it is also possible to use a butyllava waterproof sheet 107 having an adhesion reinforcing layer 79 made of a nonwoven fabric containing long fibers under the butylalava layer 73. .

As described above, in the case of performing composite waterproofing using the butylalava waterproof sheet 107 having the adhesion reinforcing layer 79, the coating layer waterproofing layer 5 disposed under the sheet waterproofing layer 700 is the first and second embodiments. Although any kind of coating waterproofing material (asphalt seal, etc.) other than the coating waterproofing material made of urethane is used, the butylaba layer of the sheet waterproofing layer 700 due to the absorption action of the nonwoven fabric 79 positioned under the sheet waterproofing layer 700. 73 and the coating film waterproofing layer 5 may be integrated to form a perfect waterproofing layer. As such, when the nonwoven fabric 79 is provided at the lower portion of the butyllava waterproof sheet 107, there is no need to provide a separate release paper under the nonwoven fabric 79.

In the above, the present invention has been illustrated and described with reference to specific preferred embodiments, but the present invention is not limited to the above-described embodiments, and the present invention is not limited to the spirit of the present invention. Various changes and modifications can be made by those who have

1 is a cross-sectional view showing a composite waterproof construction using a butyllava waterproof sheet according to the first embodiment of the present invention,

Figure 2 is a schematic plan view showing a composite waterproof construction method using a butyllava waterproof sheet according to the first embodiment of the present invention,

3 and 4 are cross-sectional views taken along line III-III and line IV-IV of FIG. 2 for explaining the waterproof construction method according to the first embodiment of the present invention;

Figure 5 is a perspective view showing the structure of the butyllava waterproof sheet according to the first embodiment of the present invention,

Figure 6 is a cross-sectional view showing the structure of the butylaba adhesive tape used in the present invention,

Figure 7 is a schematic plan view showing a composite waterproof construction method using a butyllava waterproof sheet according to a second embodiment of the present invention,

Figure 8 is a cross-sectional view showing another embodiment of the butyllava waterproof sheet used in the present invention.

* Explanation of Signs of Major Parts of Drawings *

1: concrete slab 3: adhesive layer

5: coating film waterproofing layer 7, 7a-7d, 107: butilaba waterproof sheet

8,80: adhesive tape for joint 9: protective layer

70: overlap area 70a: joint area

71: release paper 73: Butylaba layer

75: reinforcement 77: multiple film layer

77a: PET film layer 77b: LDPE film layer

77c: HDPE film layer 79: adhesion reinforcing layer

700: sheet waterproof layer

Claims (14)

Applying a primer on the base surface to form an adhesive layer; Forming a coating waterproof layer by applying a coating waterproofing material on the adhesive layer; And, On the coating film waterproofing layer, a butyllava layer having self-adhesion property is formed to increase adhesion with the coating film waterproofing layer, and a plurality of butyllava waterproof sheets having a multi-film layer formed on the butyllava layer to protect the butyllava layer. To install; to form a sheet waterproof layer; includes; The coating film waterproof layer is made of a urethane coating film waterproof material, The butylara bar of the plurality of butylara waterproof sheet and the thinner component contained in the urethane coating waterproofing material reacts so that the plurality of butylara waterproof sheet forms an integral layer with the coating layer waterproofing layer, the plurality of butylara waterproof sheet is the coating film Composite waterproof construction method using a butyllava waterproof sheet, characterized in that the waterproof layer is attached on the coating layer before the curing. Applying a primer on the base surface to form an adhesive layer; Forming a coating waterproof layer by applying a coating waterproofing material on the adhesive layer; And, On the coating film waterproofing layer, a butyllava layer having self-adhesion property is formed to increase adhesion with the coating film waterproofing layer, and a plurality of butyllava waterproof sheets having multiple film layers formed thereon to protect the butyllava layer on the butyllava layer. Installing the butylaba waterproof sheet adjacent to each other in the longitudinal direction in an overlapping manner, and installing a plurality of butyllava waterproof sheet adjacent to each other in the width direction to form a sheet waterproof layer; Butyllava waterproof comprising a Composite waterproof construction method using sheet. The method of claim 2, Before the sheet waterproofing layer forming step, the adhesive layer for the joint is previously attached to the joint area of the adjacent butyllava waterproof sheet to each other to form a joint layer, characterized in that further comprising the step of forming a joint layer Waterproof construction method. The method of claim 1, A plurality of butylava waterproof sheet forming the sheet waterproof layer is a composite waterproof construction method using a butyllava waterproof sheet, characterized in that installed in the overlap method between adjacent waterproof sheets. The method according to any one of claims 1 to 4, The multiple film layer A PET (Polyethylene Terephthalate) film layer laminated on the butyllava layer and having high tensile strength and excellent adhesion to the butyllava layer; A Low Density Polyethylene (LDPE) film layer that serves as a connection layer for connecting the HDPE film layer formed on the PET film layer and stacked on the PET film layer; And, By laminating on the LDPE film layer and integrally bonded with the PET film layer, the HDLA (High Density Polyethylene) film layer to protect the butyllava layer from external impact; Butyllava waterproof sheet comprising a Combined waterproof construction method. The method according to claim 1 or 2, Forming a protective layer for protecting the sheet waterproof layer on the upper surface of the multi-film layer of the plurality of butylava waterproof sheet; composite waterproof construction method using a butyllava waterproof sheet further comprising. The method according to claim 1 or 2, In order to increase the adhesion between the coating film waterproof layer and the sheet waterproof layer, the plurality of butylaba waterproof sheet further comprises an adhesion reinforcing layer made of a non-woven fabric containing long fibers on the lower surface thereof; Waterproof construction method. An adhesive layer formed by applying a primer on a base surface; A coating film waterproof layer formed by coating a urethane coating film waterproofing material on the adhesive layer; And, And a sheet waterproofing layer formed of a plurality of butyllava waterproof sheets on which the butyllava layer having self-adhesive force and the multiple film layers for protecting the butyllava layer are laminated on the coating film waterproofing layer. A composite using the butyllava waterproof sheet, wherein the plurality of butyllava waterproof sheets form an integral layer with the paint waterproof layer by reacting the thinner component contained in the butyllava and urethane coating waterproofing materials of the plurality of butyllava waterproofing sheets. Waterproof structure. An adhesive layer formed by applying a primer on a base surface; A coating film waterproof layer formed by coating a coating film waterproofing material on the adhesive layer; And, On the coating film waterproofing layer, a butyllava layer having self-adhesion property is formed to increase adhesion with the coating film waterproofing layer, and a plurality of butyllava waterproof sheets having a multi-film layer formed on the butyllava layer to protect the butyllava layer. Composite waterproof structure using a butyllava waterproof sheet, comprising; a sheet waterproofing layer made of a joint in an overlapping or abutting manner between adjacent waterproof sheet. The method according to claim 8 or 9, Is formed on the upper surface of the sheet waterproofing layer, a protective layer for protecting the sheet waterproofing layer; composite waterproof structure using a butyllava waterproof sheet comprising a. 10. The composite waterproof structure according to claim 9, further comprising a joint adhesive tape formed in a joint region between the adjacent butylaba waterproof sheet and the coating film waterproofing layer formed to face each other. The method according to claim 8 or 9, The multiple film layer A PET (Polyethylene Terephthalate) film layer laminated on the butyllava layer; A Low Density Polyethylene (LDPE) film layer laminated on the PET film layer; And, Composite waterproof structure using a butyllava waterproof sheet comprising a; HDPE (High Density Polyethylene) film layer laminated on the LDPE film layer. Butyl lava layer consisting of butyl lava; Release paper detachably attached to a lower portion of the butylava layer; And, A PET (Polyethylene Terephthalate) film layer laminated on the butyllava layer and having a high tensile strength and excellent adhesion with the butyllava layer, and an HDPE film layer stacked on the PET film layer and formed on top thereof, are connected to the PET film layer. Low Density Polyethylene (LDPE) film layer acting as a connection layer for the film, HDPE (High Density Polyethylene) laminated on the LDPE film layer to be integrally bonded with the PET film layer, and protects the butyllava layer from external impact Butyllava waterproof sheet comprising a; multiple film layer consisting of a film layer. The method of claim 13, Butyllava waterproof sheet, characterized in that it further comprises; an adhesive reinforcing layer formed on the lower portion of the butyllava layer made of a nonwoven fabric containing long fibers.

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