JP2823438B2 - Insulation waterproofing sheet and insulation waterproofing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulated waterproof sheet and an insulated waterproofing method laid on a building roof or the like, and more particularly, to a method in which a waterproof sheet is physically attached to a roof surface without using an adhesive. TECHNICAL FIELD The present invention relates to an insulating waterproofing sheet and an insulating waterproofing method used for an insulating waterproofing method to be fixed to the like.

[0002]

2. Description of the Related Art Conventionally, one of the waterproofing methods for laying a waterproof sheet on a building roof or the like includes an insulating waterproofing method in which a waterproof sheet is mechanically fixed to a base material as a base without using an adhesive. There is a construction method called. The features of the insulation and waterproofing method are as follows. Even if the water content of the concrete, which is the base material, is high (whether wet or wet), it can be applied without using an adhesive and can be applied at any time regardless of the weather. It is economical because the work period can be shortened. Buffers the movement of the substrate, resulting in a beautiful finish. The processing of the substrate is simple.

[0003] One example of the above insulation and waterproofing method is performed in the following procedure. a. A sheet of foamed polyolefin or the like is laid on the rooftop as an insulating sheet. b. When there is wind, the foam sheet is partially fixed to the base material surface with an adhesive or tape so that the foam insulating sheet is not blown off by the wind. c. A waterproof sheet made of, for example, vinyl chloride resin is laid on the surface of the insulating foam sheet. d. Weld the joint between the waterproof sheets. e. Decide where to place the fasteners to secure the tarpaulin and mark the tarpaulin. f. Drill at the place where the fixture is to be driven. g. In order to prevent the waterproof sheet from being cracked by the fastening of the fixing device, the first reinforcing sheet having a circular shape and having a hole formed in the center for buffering and the waterproof sheet are bonded by liquid welding. h. Insert the plug into the drilled hole. i. Set the fixture in the hole and fix with screws. j. In order to prevent water from permeating from the fixture, a second reinforcing sheet having a larger circular shape than the head of the fixture is covered and liquid-tightly welded. At this time, the overlapped portion with the waterproof sheet is joined by liquid welding to seal the circumferential insulation of the circular second reinforcing sheet. k. Weld the seams between the tarpaulins.

[0004] In general, in the insulating and waterproofing method, a foamed resin sheet (hereinafter referred to as a foamed insulating sheet) is inserted between the waterproof sheet and the base material surface. In many cases, uneven unevenness is a large groundwork on the surface such as a surface, so if a waterproof sheet is directly laid on a large uneven surface such as a concrete surface without inserting a foam insulating sheet, The waterproof sheet may be scratched or punctured. If the waterproof sheet is left untouched, it will eventually crack and cause water leakage. For this reason, in the insulating waterproofing method, a foamed insulating sheet is inserted between the base material and the waterproof sheet as a buffer.

When laying a waterproof sheet in which a liquid substance such as a plasticizer is added to a resin, such as a polyvinyl chloride sheet or an ethylene-vinyl acetate copolymer resin sheet, a synthetic rubber is used as a base material to be laid. When a sheet or asphalt is installed, or when styrofoam for insulation is laid, the oily surface treatment agent of the base material layer oozes out on the surface of the waterproof sheet and hinders the design of the waterproof sheet. Alternatively, the plasticizer may migrate to the synthetic rubber sheet or styrofoam of the base material layer, deteriorating the waterproof sheet and causing cracks in the sheet. Therefore, in order to prevent the migration of the oil and the plasticizer, a foamed insulating sheet for preventing the migration is inserted between the base material and the waterproof sheet.

[0006]

Problems to be Solved by the Invention The foam insulating sheet used in the above-mentioned conventional insulating and waterproofing method is a foam of about 30 times, so that it is easily blown off by the wind at the time of construction.
After fixing the foamed insulating sheet to the base material with an adhesive or a gum tape, a waterproof sheet is laid thereon. Therefore, not only is it troublesome to fix the foam insulating sheet, but also on a day when the wind is strong, the foam insulating sheet cannot be fixed completely, and wrinkles are generated. Not only impairs the aesthetic appearance, but also causes a problem in that the sheet at the wrinkled portion thereof becomes weak and cracks due to long-term use.

[0007] The foamed insulating sheet has a thickness of 0.5 to 5.0.
mm, and the strength is weak, so that it may be broken at the stage of applying the foamed insulating sheet. Therefore, the object of the present invention is
In order to solve the problems of the prior art described above, it is easy to handle the foamed insulating sheet during construction on the roof surface or the like, and to provide an insulating waterproofing sheet and an insulating waterproofing method for an insulating waterproofing method that do not cause problems such as adverse effects or breakage due to wind. To provide.

[0008]

The above object is achieved by the present invention described below. That is, the present invention provides an insulating waterproof sheet characterized in that a foam sheet is adhered to one surface of the waterproof sheet so as to be forcibly peelable , and an insulating waterproofing method using the insulating waterproof sheet.

[0009]

[Function] A foam insulation sheet is forcibly applied to the back of the waterproof sheet in advance.
Adhering releasably eliminates the problem that the light and insulative insulation foam sheet is blown, torn, wrinkled, or rolled up even when wind blows during construction, and the work process is improved. Significantly reduced. With a waterproof sheet
The foam insulation sheet is adhered so that it can be forcibly peeled off
The joining of the ends of the waterproof sheets peels off the foam insulating sheet.
Separate and attach only the waterproof sheet and bond it.
To be able to wear and maintain a strong watertight joint for a long time
Can be done.

[0010]

Next, the present invention will be described more specifically with reference to preferred embodiments. As shown in the partial perspective view of FIG.
Is characterized in that the insulating foam sheet 2 is adhered to one surface so as to be forcibly peelable .

The waterproof sheet 1 itself used in the present invention may be the same as the waterproof sheet used in the conventional insulation waterproofing method, for example, vinyl chloride resin sheet, ethylene-vinyl acetate copolymer resin sheet, polyethylene Examples thereof include a resin sheet, a polypropylene resin sheet, and a synthetic rubber sheet, and a sheet made of a soft vinyl chloride resin is most preferable because liquid welding (adhesion with a solvent) is easy.

The waterproof sheet 1 as described above may be a single layer or a laminate, but a laminate in which a shrinkage preventing material 3 such as a glass nonwoven fabric is inserted in order to prevent the sheet 1 from shrinking. The thickness of the waterproof sheet 1 is not particularly limited, but is usually 0.5 to
It is 5.0 mm, preferably 1.0 to 2.0 mm.
The length is not particularly limited, and the width is 500 to 2,000 m.
m, and is usually wound in a roll.

The foamed insulating sheet 2 to be adhered to the back surface of the prevention sheet 1 is an insulating foamed sheet made of various foams of polyethylene, polypropylene, polyurethane, polyvinyl chloride, and ethylene-vinyl acetate copolymer. When the sheet 1 is a sheet made of a vinyl chloride resin or a resin sheet to which a liquid substance such as a plasticizer such as an ethylene-vinyl acetate copolymer resin is added, a polyolefin-based resin capable of preventing migration of the plasticizer Is preferred. The thickness of the foam sheet 2 is usually 0.5 to
It is 5.0 mm, preferably 1.0 to 3.0 mm. The length and width are the same as those of the waterproof sheet 1. or,
The insulating foam sheet 2 is preferably made of a material that is long like the waterproof sheet 1 and is flexible so that it can be wound into a roll.

The bonding between the waterproof sheet 1 and the insulating foam sheet 2 is performed by an adhesive, a pressure-sensitive adhesive or heat fusion. When the insulation and waterproofing method is performed using the above-described materials, the sheet A is a long sheet having a specific width, and when the sheet A is installed on a wide rooftop or the like, a long sheet having a certain width is cut into an appropriate length and arranged. Execute. At this time, it is necessary to prevent water leakage from between the adjacent waterproof sheets. For this purpose, as illustrated schematically in FIGS.
It is preferable to adhere the both, in order to improve the adhesion, waterproofing the sheet 1 in advance by adhering the foamed insulation sheet 2 in forced peelable state, necessary width peeled and cut insulating foam sheet 2, As shown in FIG. 2A, or as shown in FIG. 2B, a part of the foamed sheet 2 is peeled off, and an adjacent waterproof sheet is inserted therebetween, and both are liquid-welded . If the hand is not peeled off the insulating foam sheet 2 is required to sufficiently cover the seam with waterproof sheet 1 the same quality of auxiliary sheet 4
Is not preferred .

[0015] As described above, if by laminating a and waterproof sheet 1 insulating foamed sheet forced peelably, peeled off only required width foam insulation sheet 2 at the time of bonding between the waterproof sheet 1 from the waterproof sheet 1 Thus, the waterproof sheets can be strongly and watertightly joined together by liquid welding or the like. As such a peelable bonding method, for example, an acrylic emulsion or a polyvinyl acetate-based emulsion adhesive or a pressure-sensitive adhesive is used, and an adhesive strength is applied to either the waterproof sheet 1 or the foamed insulating sheet 2. Preferably, a method is used in which the adhesive is selected appropriately so as not to cause much adhesion and the adhesion is performed. Also, it is preferable to provide lattice-shaped scales on the surface of the waterproof sheet 1 at appropriate intervals within a range that does not impair the aesthetics of the waterproof sheet 1, for example, at intervals of about 50 to 200 mm. By providing such a scale, the insulating waterproof sheet A
When fixing to the roof surface, it is possible to accurately position the fixing portion.

Next, an example of the insulation and waterproofing method of the present invention will be described with reference to FIGS. First, the above-described insulating waterproof sheet A (for example, a laminate of a vinyl chloride resin sheet and a foamed polypropylene sheet) is waterproofed with concrete, lightweight foamed concrete, wood, or already rubberized or asphalt. However, the surface of the base material 5 whose durability time has already passed is covered with an insulating waterproof sheet A as shown in the figure. Next, a similar first reinforcing sheet 6 made of vinyl chloride resin (in this example, a disk made of a soft vinyl chloride resin sheet having a circular hole having a diameter of 185 mm, a thickness of 1 mm, and a diameter of 10 mm at the center) is attached to the waterproof sheet 1. At a predetermined fixed position, and is preferably liquid-welded to the waterproof sheet surface.

Next, along the center circular hole of the first reinforcing sheet 6, the insulating waterproof sheet A is pierced through the insulating waterproof sheet A to the base material 5 by a suitable drill suitable for the base material 5, and for example, a hole having a diameter of about 4
A hole 7 having a depth of about 10 to 10 mm and a depth of about 30 to 150 mm is formed, and a cold-setting resin such as an epoxy resin is injected into the hole 7 to secure a screw hole and fix the screw before the resin is solidified. For example, a nylon plug 8 is inserted in order to secure the pressure, and subsequently, for example, a holding plate 9 (in this example, a metal dish-shaped and coated with a rust-preventive paint (preferably made of vinyl chloride resin)) A steel plate having a thickness of 1 mm, a diameter of 65 mm and a screw hole of 5 mm at the center is placed, and screws 10 are screwed into the base material 5 through the holes of the holding plate, and the holding plate 9 is firmly fixed. During this time, the epoxy resin is solidified, and the fixing is sufficiently performed.

Next, THF is applied to the entire surface of the second reinforcing sheet 11 (in this example, a disc-shaped soft vinyl chloride sheet having a diameter of 1,200 mm and a thickness of 1 mm), and the first reinforcing sheet 6 and The holding plate 9 is adhered to the surfaces of the holding plate 9, the first reinforcing sheet 6 and the waterproof sheet 1 while sufficiently covering the holding plate 9. Subsequently, if necessary, a sealant 12 made of a THF solution of a vinyl chloride resin is applied to the periphery of the second reinforcing sheet 11 to prevent the leakage, thereby completely preventing water leakage.

Next, specific examples will be described. 1.2m thick
The waterproofing sheet of the present invention is obtained by laminating and laminating a polyethylene foam having a thickness of 1.5 mm and a foaming ratio of 30 times via an acrylic emulsion adhesive on the back surface of a waterproofing sheet made of a polyvinyl chloride resin having a thickness of m. I got Lay the laminated waterproof sheet on the concrete surface of the flat bottom wall of the roof,
The first reinforcing sheet (made of vinyl chloride resin) with a circular shape with a hole at the center where the fixing tool is to be driven
Are bonded to the positions where the fixtures are to be driven by liquid welding, plugs are driven in, the fixtures are set, and the screws are firmly fixed with stainless steel screws.

Further, the fixing part is covered with a circular second reinforcing sheet (made of vinyl chloride resin) in which a center part larger than the head part of the fixing part is raised in a cap shape,
The surface portion of the fixture and the overlapping portion with the waterproof sheet are bonded by liquid welding, and the circumferential insulating portion of the second reinforcing sheet is sealed. The fixture is a vinyl chloride resin sheet or a steel plate whose surface is coated with paint.

At the side end of the insulating waterproof sheet, about 30
The waterproof sheet and the foamed polyethylene sheet on the back side are peeled off with a width of ~ 50 mm, and the side ends of the waterproof sheet that are in contact with each other are overlapped, and only the waterproof sheet portion is bonded and joined by liquid welding to waterproof the entire roof. Join the sheets.

[0022]

According to the present invention as described above, since the foamed insulating sheet is preliminarily adhered to the back surface of the waterproof sheet so as to be forcibly peeled off , the foamed insulating sheet is laid as before, and then the waterproof sheet is laid. The construction was completed in one process, and the construction time was greatly reduced. Further, the foamed insulating sheet was not broken at the time of construction, and the foamed insulating sheet was lifted up by the wind, and when the waterproofing sheet was laid thereon, such a problem that the waterproofing sheet was wrinkled was eliminated.
Furthermore, since the waterproof sheet and the foam insulating sheet are bonded so that they can be forcibly peeled off, the joining of the ends of the waterproof sheets can be performed by peeling the foam insulating sheet and bonding only the waterproof sheet, so that the overlap welding can be performed. Ru can keep a strong watertight bonding over a long period of time.

[Brief description of the drawings]

FIG. 1 is a perspective view of a part of an insulating waterproof sheet of the present invention.

FIG. 2 is a view for explaining a method of joining an insulating waterproof sheet according to the present invention.

FIG. 3 is a view for explaining the insulating and waterproofing method of the present invention.

FIG. 4 is a view for explaining the insulating and waterproofing method of the present invention.

[Explanation of symbols]

 A: Insulating waterproof sheet 1: Waterproof sheet 2: Insulating foam sheet 3: Reinforcing material 4: Auxiliary sheet 5: Base material 6: First reinforcing sheet 7: Hole 8: Plug 9: Holding plate 10: Screw 11: Second Reinforcement sheet 12: Sealant

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masato Ogura 5-3 Higashinakakani-cho, Tsuchiura-city, Ibaraki Pref. Inside the Technical Research Institute (72) Inventor Yasuaki Shinada 5-3 Higashinakakani-cho, Tsuchiura-shi, Ibaraki (56) References JP-A-2-61249 (JP, A) JP-A 50-105712 (JP, U) JP-B 61-24499 (JP, B1) JP-A 1-143315 No. (JP, U) (58) Field of investigation (Int. Cl. ⁶ , DB name) E04D 5 / 10 E04D 5/14 E04D 5/00

Claims (3)

(57) [Claims] 1. A foam sheet is strong on one surface of a waterproof sheet.
Insulation tarpaulin characterized in that it is braking releasably adhered. Wherein it is made waterproof sheet vinyl chloride resin, insulating waterproof sheet according to claim 1 foam sheet Ru polyolefin manufactured der. 3. A laminate comprising a waterproof sheet and a foam sheet.
Apply a plurality of insulating waterproof sheets on the surface of the substrate to be waterproofed.
Cover the foam sheet with the foam sheet facing each other, adhesively fix the first reinforcing sheet at a predetermined location, drill a hole that penetrates into the base material with an appropriate drill at the center, and insert a screw receiving plug. After inserting the curable resin into the through-hole, injecting the curable resin into the through-hole, covering the pressing plate having a screw hole at the center, fixing the pressing plate to the base material with screws, further, the reinforcing sheet and the pressing plate the second reinforcement sheet is bonded and fixed to Itakutsugae absolute
In the edge waterproofing method, the above multiple insulating waterproof sheets are contracted.
The sheet according to claim 1 or 2, wherein the sheet
Join the ends together using one of the foam sheets
Partially peeled, the insulating waterproof construction method, wherein the this <br/> joining overlapping ends of the sheet.