JPH0849312A - Waterproof sheet for architectural use - Google Patents

Abstract

PURPOSE:To obtain a sheet excellent in workability and waterproofing, by backing an attaching cloth made of polyester wooven cloth immersed in gum on the rear face of a rubber sheet. CONSTITUTION:A rubber sheet 2 made of blended rubber of EPDM with butyl rubber is. backed as a unit with an attaching cloth 3 in which a polyester cloth 3 is immersed in butyl gum 4 to form a waterproof sheet 1. This waterproof sheet 1 is stuck to the inside corner A of a wall material 12 rising from the floor material 11 with an adhesive gum. In this way, the workability and cutting- off characteristics can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building waterproof rubber sheet suitable for use as a building waterproof member.

[0002]

2. Description of the Related Art Conventionally, rubber sheets, vinyl chloride sheets, caulking materials, gaskets, etc. have been used as waterproof members for construction.

[0003]

However, since the rubber sheet has too large rubber elasticity, it is difficult to attach a straight line at the time of construction, and a corner is required for construction of a corner portion such as an entering corner or an exiting corner. It has the disadvantage that it is difficult to apply the work according to the shape of the part. Further, especially in the case where the pulling cloth is lined, the pulling cloth absorbs moisture, which is a problem in waterproofing. Also, PVC sheet is hard,
Although straight line sticking work is easy, sticking work at corners is difficult, and contraction occurs after construction, and the waterproof function is lost. Further, with caulking materials, the skill level of the work varies depending on the operator, and reliable waterproofing is difficult. In addition, since the gasket is an extruded product, the size of the gasket is always small, and the gasket has the disadvantage of being inferior in waterproofness over time. SUMMARY OF THE INVENTION It is an object of the present invention to solve the conventional inconvenience and provide a waterproof member having excellent workability and waterproofness.

[0004]

In order to achieve the above-mentioned object, the waterproof rubber sheet for construction of the present invention is characterized in that the back surface of the rubber sheet is lined with a pull cloth impregnated with rubber glue. As the rubber paste, a butyl rubber paste that is incompatible with water is preferable. The rubber sheet is preferably a blend rubber of EPDM (ethylene / propylene rubber) and butyl rubber, and a rubber sheet having excellent smoothness required as a waterproof sheet can be obtained. Further, when the pull cloth is made of polyester woven cloth, it is effective in heat resistance and does not change in size even after being aged at 100 ° C. for 1000 hours. Further, the waterproof sheet preferably has a thickness of 0.7 mm or less in order to prevent a step from being formed at the joint.

[0005]

[Function] Since the back of the rubber sheet is lined with a pull cloth,
Since the elasticity of the rubber sheet can be suppressed, the sticking work on a straight line can be performed easily, and the sticking work according to the shape of the corner at the corner can be easily done. Further, since the pulling cloth is impregnated with the rubber paste, the pulling cloth and the rubber sheet are integrated very well, and the pulling cloth itself is provided with waterproof property, which is highly waterproof. Further, since the pulling cloth is impregnated with rubber paste, the pulling cloth itself is provided with an adhesive property, which makes it extremely easy to stick to a floor material, a wall material, etc. Moreover, the sticking portion is extremely watertight. It will be expensive.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross-sectional view of one embodiment of the architectural waterproof sheet 1 of the present invention. In FIG. 2, 2 shows a rubber sheet made of a blend rubber of EPDM and butyl rubber, having a thickness of 300 μm.
It is as m. This is because if the thickness is less than 300 μm, necessary waterproofness and sufficient strength cannot be obtained.

Reference numeral 3 in the drawing denotes a polyester sack cloth (35 × 33) having a thickness of 200 μm. The polyester sack cloth 3 is impregnated with butyl rubber glue 4, and the rubber glue 4 is used to adhere to the rubber sheet 2. And is lined integrally with the rubber sheet 2. The impregnated amount of the rubber paste 4 is preferably about 0.2 kg / m ^{2 of the} rubber paste 4 with respect to the polyester rough cloth 3. As described above, since the polyester sack cloth 3 is impregnated with the rubber paste 4, the pull cloth itself is provided with the waterproof property and the adhesive property, and the waterproof property and the workability are excellent. .

FIG. 2 shows an example of the construction of the waterproof sheet for a building, which is used as a waterproof material for prefabricated houses. Figure 2 (a) shows the corner A in the corner of the house.
In the example shown in FIG. 1, the waterproof sheet 1 is attached at the entry corner A of the wall material 12 rising from the floor material 11 using a rubber adhesive. As described above, since the waterproof sheet 1 is lined with the polyester sack cloth 3, rubber elasticity is suppressed, and even in such a corner portion, the shape can be accurately adjusted and the polyester sheet can be attached. It can be attached to the floor material 11 and the wall material 12 in an extremely watertight manner by utilizing the adhesive surface formed by the rubber paste 4 impregnated in the sack cloth 3.

Incidentally, FIG. 2B shows an example in which a waterproof sheet is applied to the projecting corner portion B. Since only the shape of the corner portion is different, the same members as those in FIG. 2A are designated by the same reference numerals. The description is omitted.

[0010]

As described above, according to the present invention, a construction waterproof sheet excellent in workability and waterproofness can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of an example of a waterproof rubber sheet for construction of the present invention.

FIG. 2 is a perspective view showing a construction example of the waterproof rubber sheet for construction of the present invention.

[Explanation of symbols]

 1 Waterproof Sheet 2 Rubber Sheet 3 Polyester Rough Cloth (Drawing Cloth) 4 Rubber Glue 11 Floor Material 12 Wall Material A Entered Corner B Exited Corner

Claims (5)

[Claims] 1. A waterproof rubber sheet for construction, characterized in that the back surface of the rubber sheet is lined with a pulling cloth impregnated with a rubber paste. 2. The waterproof rubber sheet for buildings according to claim 1, wherein the rubber glue is a butyl rubber glue. 3. The waterproof rubber sheet for buildings according to claim 1, wherein the rubber sheet is a blend rubber of EPDM and butyl rubber. 4. The waterproof rubber sheet for buildings according to claim 1, wherein the pulling cloth is a polyester woven cloth. 5. The waterproof rubber sheet for buildings according to claim 1, which has a thickness of 0.7 mm or less.