JPH07317232A - Waterproof sheet and adhesive body thereof - Google Patents

Abstract

PURPOSE:To maintain a waterproof performance for a long period of time by providing an acrylic adhesive bond on one side through an insulation sheet and, at the same time, applying a waterproof rubber sheet to an adhesive body providing a rubber adhesive bond to the other side. CONSTITUTION:An adhesive body 10 having an acrylic adhesive bond 12 and a rubber adhesive bond 13 is formed through an insulation sheet 11 constituted of a polyester resin film or a thermoplastic resin film such as polyethylene, etc. After that, the adhesive body 10 is used to connect the end 3a of a PVC sheet 3 built on the upper surface of a floor 1 to a waterproof rubber sheet 4 in a water-tight state. Accordingly, the incursion of rain water from a gap between the waterproof rubber sheet 4 and an internal wall 2 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof sheet adhesive and a waterproof sheet used as a waterproofing material for buildings such as balconies.

[0002]

2. Description of the Related Art Conventionally, a polyvinyl chloride sheet (hereinafter referred to as "PV
(Abbreviated as “C sheet”), and further, the P
In order to give waterproofness to the end portion of the VC sheet, the end portion of the PVC sheet is covered with the waterproof rubber sheet. When covering the waterproof rubber sheet, a rubber-based adhesive such as butyl rubber is used to adhere it to the PVC sheet on the lower surface.

[0003]

However, in the above-mentioned conventional construction method, when the rubber-based adhesive is used for many years, P
There is a disadvantage that the adhesive strength is deteriorated due to migration of the plasticizer contained in the VC sheet, and as a result, the waterproofness of the end portion of the PVC sheet is deteriorated. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional inconvenience and provide a waterproof sheet that can maintain waterproof performance even after long-term use.

[0004]

In order to solve the above-mentioned problems, the present invention has the above-mentioned object by utilizing an adhesive body capable of preventing the adhesive strength from being deteriorated due to the migration of the plasticizer contained in the PVC sheet. Is to achieve.
That is, the waterproof sheet adhesive body of the present invention is characterized in that an acrylic adhesive layer is provided on one surface and a rubber adhesive layer is provided on the other surface via an insulating sheet. Further, the waterproof sheet of the present invention is a waterproof rubber sheet in which an acrylic adhesive layer is provided on one surface via an insulating sheet and a rubber adhesive layer is provided on the other surface via the rubber adhesive layer. It is characterized by being attached to.

The insulating sheet forming the adhesive is PV
It is not particularly limited as long as it can prevent the migration of the plasticizer contained in the C sheet, but it is preferable to use a polyester resin film when it is placed in an environment where heat is applied, and when it is not, polyethylene or polyethylene, An inexpensive thermoplastic resin film such as polypropylene may be used.

The thickness of the acrylic pressure-sensitive adhesive layer is generally about 0.1 mm, but it may be appropriately selected depending on the environment of use. Incidentally, if the surface of the insulating sheet is subjected to corona discharge treatment or primer treatment, the bonding state with the acrylic pressure-sensitive adhesive layer can be improved.

Further, as the rubber-based pressure-sensitive adhesive forming the rubber-based pressure-sensitive adhesive layer, butyl rubber, natural rubber or the like is used. Generally, the thickness is about 0.1 mm,
It may be appropriately selected according to the usage environment.

The adhesive body of the waterproof sheet of the present invention is, for example,
Although a release sheet may be provided on each of the acrylic pressure-sensitive adhesive layer and the rubber-based pressure-sensitive adhesive layer, a release sheet may be provided on either the acrylic pressure-sensitive adhesive layer or the rubber-based pressure-sensitive adhesive layer and rolled into a roll. It may be set aside, and may be formed in an appropriate form according to the work environment.

[0009]

[Function] Since the acrylic adhesive layer is provided on one surface via the insulating sheet and the rubber adhesive layer is provided on the other surface, good waterproof bonding is achieved for the PVC sheet via the acrylic adhesive layer. Thus, good waterproof bonding can be obtained with respect to the waterproof rubber sheet via the rubber-based pressure-sensitive adhesive layer. In addition, even after long-term use, migration of the plasticizer contained in the PVC sheet to the rubber-based adhesive layer is blocked by the insulating sheet, so that the waterproof performance can be maintained for a long time.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of the present invention will be described with reference to the drawings. The illustrated embodiment shows an example in which the present invention is applied for waterproofing a balcony. In the figure, 1 indicates a floor of the balcony, 2 indicates an inner wall in contact with the end of the floor 1, and the upper surface of the floor 1 is The PVC sheet 3 is laid, and the end portion 3a of the PVC sheet 3 is bent along the lower portion of the inner wall 2 so that rainwater or the like does not enter between the inner wall 2 and the end portion 3a of the PVC sheet 3. Thus, the entire end portion 3a is covered with the waterproof rubber sheet 4. Reference numeral 5 in the drawing denotes an outer wall, and by covering the waterproof rubber sheet 4, rainwater is prevented from entering through a gap formed between the waterproof rubber sheet 4 and the inner wall 2.

In this embodiment, the end portion 3 of the PVC sheet 3 is
2a and the prevention rubber sheet 4 are water-tightly bonded to each other using the adhesive 10 of the present invention. An acrylic pressure-sensitive adhesive layer 12 made of an acrylic resin is provided on one surface of 11 and a rubber-based pressure-sensitive adhesive layer 13 made of butyl rubber is provided on the other surface, and the acrylic pressure-sensitive adhesive layer 12 is attached to the end portion 3 a of the PVC sheet 3. At the same time, the rubber pressure-sensitive adhesive layer 13 was attached to the waterproof rubber sheet 4. Thus, the end portion 3 of the PVC sheet 3
Between a and the prevention rubber sheet 4, it is possible to maintain a joined state with excellent durability, and even if it is used for a long period of time, these PV
Rainwater does not enter from between the end portion 3a of the C sheet 3 and the prevention rubber sheet 4.

In this embodiment, the adhesive body 10 is separately prepared so that the end portion 3a of the PVC sheet 3 can be used at the construction site.
The protective rubber sheet 4 and the protective rubber sheet 4 are joined together. However, as shown in FIG.
The rubber-based pressure-sensitive adhesive layer 13 of 1 is attached, and the acrylic-based pressure-sensitive adhesive layer 1
A release sheet 15 such as a release paper is provided on the upper surface of 2, and the waterproof sheet 20 prepared in this way is brought to the construction site, and the acrylic adhesive layer 12 is exposed by peeling the release sheet 15 You may make it stick to the edge part 3a of the PVC sheet 3.

[0013]

As described above, according to the present invention, it is possible to obtain a waterproof sheet and an adhesive body of the waterproof sheet capable of maintaining the waterproof performance for a long period of time.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a construction example using an adhesive body of a waterproof sheet of the present invention.

FIG. 2 is an enlarged cross-sectional view of an adhesive body of a waterproof sheet.

FIG. 3 is an enlarged sectional view of the waterproof sheet of the present invention.

[Explanation of symbols]

 1 Floor 2 Inner Wall 3 PVC Sheet 3a Edge 4 Waterproof Rubber Sheet 5 Outer Wall 10 Adhesive 11 Insulation Sheet 12 Acrylic Adhesive Layer 13 Rubber Adhesive Layer 14 Waterproof Rubber Sheet 15 Release Sheet 20 Waterproof Sheet

Claims (5)

[Claims] 1. An adhesive body for a waterproof sheet, wherein an acrylic pressure-sensitive adhesive layer is provided on one surface via an insulating sheet and a rubber-based pressure-sensitive adhesive layer is provided on the other surface. 2. The adhesive body according to claim 1, wherein a release sheet is provided on the acrylic pressure-sensitive adhesive layer and the rubber pressure-sensitive adhesive layer. 3. The insulating sheet is composed of a polyester resin film or a thermoplastic resin film of polyethylene, polypropylene or the like.
Or the adhesive body according to 2. 4. An adhesive body having an acrylic pressure-sensitive adhesive layer on one surface and a rubber pressure-sensitive adhesive layer on the other surface via an insulating sheet is adhered to a waterproof rubber sheet via the rubber-based pressure-sensitive adhesive layer. A tarpaulin characterized by that. 5. The insulating sheet is composed of a polyester resin film or a thermoplastic resin film of polyethylene, polypropylene or the like.
The listed waterproof sheet.