JP2000129867A - Waterproof sheet with projection and its waterproof method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve waterproofness and contrive the reduction of a material cost and a working cost by applying an adhesive at a prescribed interval beforehand, and manufacturing a waterproof sheet having a projection with specified diameter and height to be stuck and laid on a waterproof execution face. SOLUTION: A waterproof sheet laminating vinyl chloride, polyethylene or the like and non-woven fabric or the like is used suitably. The waterproof sheet with a projection has high anti-permeability, and flexibility following the shape of an execution place easily, and in the case where the waterproof sheet is joined, the joining or the like is secured. In this case, the size of the projection 2 attached to the face of the waterproof sheet is 1-10 mm of a diameter, height is 1-10 mm, and adhesion joining is made good for a waterproof execution face to uniformly stick the waterproof sheet 1. An adhesion an the part of the projection 2 is made emulsion type vinylacetate resin-base or the like, and waterproof execution is performed on the upper face of the waterproof sheet 1 by a coating waterproof material. Thereby jobsite working is largely simplified, and following with waterproof execution substrate face 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 waterproof sheet used on a roof, a roof, a balcony, a floor, etc. of a building and a waterproofing method thereof.

[0002]

2. Description of the Related Art Conventional roofs, rooftops, balconies,
A waterproof sheet is laid on a waterproof construction surface such as a floor to prevent rainwater from entering the room.

When such a waterproof sheet is used, the waterproof sheet is laid and fixed directly on the waterproof construction surface with a tacking means or a tacker or the like, or it is laid and fixed on the lower surface of the waterproof sheet with an adhesive. I was

However, when the waterproofing sheet is fixed using fixing means such as tacks or tuckers, the fixing means is exposed to the outside,
Further, in combination with the fact that the fixing means has reached the base, rainwater may have entered from the perforations of the tacks or tuckers, causing rain leakage.

[0005] Adhering the entire back surface of the waterproof sheet with an adhesive requires skill in the application of the adhesive at the construction site, and is troublesome and causes an increase in cost.

When the entire back surface of the waterproof sheet is adhered to the waterproof construction surface with an adhesive, for example, when cracks occur in concrete or the like on the waterproof construction surface, the waterproof sheet further cracks in the waterproof layer formed thereon. Rainwater infiltration will occur.

In the sheet waterproofing method, in addition to the entire surface bonding method of the waterproof sheet, there are a spotting method of partially bonding, a floating method of bonding only the end portion of the waterproof layer to the base, and an insulating method. On-site construction was troublesome and cost reduction could not be achieved.

[0008] There is a perforated tarpaulin in the asphalt tarpaulin. The purpose of the perforated tarpaulin is so-called deaeration for bleeding air. In the asphalt waterproofing method, air is easily formed due to thick coating, which causes a significant cause of blistering and deterioration of the asphalt waterproof layer. Cracks in the foundation of concrete or the like also cause cracks in the asphalt waterproofing layer. Therefore, a vent hole for bleeding air is required, which is completely different from the object of the present invention. In the case of the present invention, on the contrary, a waterproofing method may be adopted in which air may enter and an escape space for air may be created.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a waterproof sheet with projections which can improve the waterproof property, reduce materials and work costs, and can simplify the on-site work, and the like. It aims to provide a fixing method and a waterproofing method.

[0010]

In order to achieve the above object, a waterproof sheet having a diameter of 1 in which an adhesive is applied in advance at predetermined intervals is provided.
A waterproof sheet having protrusions of 10 mm to 10 mm in height and having a height of 1 to 10 mm is prepared, laid on the waterproof construction surface, and the waterproof sheet is attached to the waterproof construction surface. The waterproof sheet with projections is formed by attaching a release sheet of a thin plastic film to a surface having projections to which an adhesive is applied, and the release sheet can be easily peeled off at the time of on-site construction. Thereafter, a waterproofing method is applied in which a waterproofing material is applied to the surface of the waterproof sheet with protrusions.

[0011]

According to the waterproofing sheet with projections and the waterproofing method of the present invention, even if the waterproofing surface is cracked, the waterproofing sheet itself is only damaged at the point joints around the cracked portion and the waterproofing sheet itself is damaged. Absent. This is because the waterproof sheet with projections is laid on the waterproof construction surface, and the projections of the waterproof sheet with projections are adhered to the base to perform point joining. Waterproofing can be performed easily and reliably by waterproofing the upper surface of the waterproof sheet with protrusions with a coating film waterproofing material.

[0012] The waterproof sheet of the perforated waterproof sheet may be rubber-containing asphalt, vinyl chloride, polyethylene / vinyl acetate copolymer, synthetic rubber, neoprene, polyisobutylene, acrylic, or the like, or a composite thereof, a synthetic fiber sheet or non-woven fabric. Various types of waterproof sheets such as a laminate of woven fabrics and a non-combustible sheet made of inorganic fibers can be used. In particular, a waterproof sheet obtained by laminating a non-woven cloth or the like with vinyl chloride, polyethylene, or the like is preferably used. The waterproof sheet with protrusions has high moisture permeability, has flexibility that can easily follow the shape of the construction site, and has joining properties when joining the waterproof sheet.

The release paper used on the surface of the waterproof sheet with projections on which the adhesive is applied is 0.03 to 0.5 m.
A thin plastic film having a thickness of m, for example, polyethylene, polypropylene, vinyl chloride, or the like can be used.

The size of the projection on the waterproof sheet surface is 1 to
It has a diameter of 10 mm and a height of 1 to 10 mm. 1m diameter
If it is less than m, the adhesion is not enough, the adhesive bond with the waterproof construction surface is insufficient, and it easily peels off. Cannot be attached.

The interval between the projections provided on the waterproof sheet surface must be determined according to the size of the projections and the material of the waterproof sheet, but is preferably in the range of 5 to 50 mm. If it is less than 5 mm, it takes too much space and it takes time for construction.
If it is 50 mm or more, the interval is too large and the effect of the point joining is reduced.

The adhesive to be applied to the projections by laying the waterproof sheet with projections on the waterproof construction surface is determined by the material of the waterproof sheet with projections. Polymer type, latex type rubber type, latex type epoxy modified rubber type, epoxy resin type, urethane type and the like can be used.

Acrylic-based, urethane-based, ethylene-vinyl acetate copolymer-based, chloroprene-based and the like are used as the coating waterproofing material for waterproofing the upper surface of the waterproof sheet with projections.

[0018]

Embodiments of the present invention will be described below.

EXAMPLE A waterproof sheet (trade name "Tyvek" manufactured by Asahi DuPont Flashpan Products Co., Ltd.) reinforced with a nonwoven sheet made of synthetic resin and a polyethylene film woven on the upper surface and a polyethylene tape woven on the lower surface. The waterproof sheet having a protrusion having a diameter of 5 mm and a height of 5 mm was formed on the surface of each of the above-mentioned products at intervals of 15 mm each in the vertical and horizontal directions. An epoxy resin-based adhesive (trade name “Tilement EP-900” manufactured by Tilement Co., Ltd.) was applied to the protrusions, and a release paper having a thickness of 0.3 mm was attached to the surface of the waterproof sheet having the protrusions.

The surface of the waterproof sheet with projections except for the release paper was laid on the base concrete finish surface, and the projections of the waterproof sheet with projections were bonded and bonded to the base concrete finish surface.

An upper surface of the waterproof sheet with projections is coated with an emulsion type acrylic coating waterproofing material (trade name "Reball Mighty").
(Manufactured by Ribor Co., Ltd.) and waterproofing was performed. After that, artificial width 1mm over the entire surface of the base concrete surface
However, the waterproof sheet was not damaged at all, and no abnormality occurred in the waterproof layer.

[0022]

As described above, the waterproofing method for a waterproof sheet with projections according to the present invention can greatly simplify the on-site work, reduce the material and work cost, and provide waterproofness and followability with the construction base surface. Could be improved. An air escape space was provided between the base and the waterproof sheet, and the air was evacuated from the deaeration holes, whereby blistering and cracking of the waterproof coating film could be prevented. Also, even if a crack was formed in the precursor, no crack was generated in the coating film.

[Brief description of the drawings]

Fig. 1 Waterproof sheet with protrusion

FIG. 2 is a cross-sectional view of a waterproof sheet with a projection.

[Explanation of symbols]

 1. Waterproof sheet with protrusions 2. Protrusion 3. Adhesive 4. Release paper 5. Waterproof base 6. Waterproof coating

Claims (2)

[Claims] 1. A waterproof sheet having a projection having a diameter of 1 to 10 mm and a height of 1 to 10 mm, to which an adhesive has been applied in advance at predetermined intervals. 2. A waterproofing method comprising: laying the waterproof sheet according to claim 1 on a waterproofing surface, sticking only protrusions to the waterproofing surface, and then applying a waterproofing material to the waterproofing surface. .