JPH0533436A - Method for laying floor material at flat roof or the like covered with waterproof sheet - Google Patents

Abstract

PURPOSE:To ensure extremely high workability, enable a damaged floor material, if any, to be separated and renewed to a clean finished condition with relative ease, further enable excellent bonding quality to be maintained for a long period with good water and heat resistant characteristics, eliminate a need for sealing the boundary of the floor material with a sealant, and ensure an extremely clean condition to be kept, even upon occurrence of air layer expansion between a waterproof sheet and a floor material. CONSTITUTION:In the flat roof or the like having a soft polyvinyl chloride waterproof sheet 3 laid on the surface of a wall 2 to be waterproofed, while the required area of the sheet 3 such as a peripheral section being jointed to a jointing body 4 and most of other areas being left free, a long floor material 5 having the predetermined width and mainly composed of polyvinyl chloride, is cut into pieces having the predetermined length. These pieces are laid on the upper surface of the sheet 3. Also, the peripheral sections of the floor material pieces 5 or the nearby sections thereof are bonded to the sheet 3 over 20 to 60mm bonding width with a bonding agent of tetrahydrofuran solvent type.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for tensioning a floor material on a waterproof sheet stretched flat roof or the like.

[0002]

2. Description of the Related Art Conventionally, for example, in a flat roof of a concrete structure, that is, on a roof of a building, or in an outer corridor of a housing complex, a veranda, etc., a waterproof sheet made of a synthetic resin such as soft polyvinyl chloride is used only for its minimum required portion. It is stretched by a so-called insulation method in which it is joined to a joint fixed to a wall surface to be waterproofed, and most of the rest is left alone. According to this insulation method, waterproofing can be performed reliably without being affected by the unevenness of the concrete wall surface during waterproofing.

In the flat roof having such a waterproof sheet stretched, in the state as it is, if a person walks on the upper surface of the waterproof sheet or plays sports, the waterproof sheet will be broken. A floor material having a required strength is attached to the upper surface so that a person can walk or the like.

[0004]

However, according to the conventional method, since the floor material is entirely adhered to the upper surface of the waterproof sheet using the epoxy resin adhesive, the workability is extremely poor and the work time is long. If the floor material is long and the floor material is damaged, it is difficult to peel off the floor material and re-attachment work is not easy. Moreover, since the epoxy resin adhesive has poor water resistance and heat resistance, Not only is it difficult to maintain, but the entire circumference of the floor material needs to be sealed with a sealing material, which is troublesome. Further, when the air layer between the waterproof sheet and the floor material expands, there is a problem that the uneven shape is conspicuous and the appearance is extremely deteriorated.

An object of the present invention is to solve the above-mentioned problems of the prior art and to install a flooring material on the upper surface of a waterproof sheet-lined flat roof or the like, which is extremely excellent in workability and requires a large work time. It can be shortened, and even if the floor material is damaged, the floor material can be peeled off relatively easily, the refilling work can be done easily and the finish can be done cleanly, and the water resistance and heat resistance are good, It can maintain excellent adhesiveness for a long period of time, and it is not necessary to seal the entire circumference of the floor material with a sealing material, and even if the air layer between the waterproof sheet and the floor material expands, there are almost no irregular shapes. An object of the present invention is to provide a method for laying a floor material on a flat roof with a waterproof sheet that is inconspicuous and has a very beautiful appearance.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention joins a waterproof sheet made of soft polyvinyl chloride to the surface of a wall to be waterproofed to a joined body only at a required portion such as a peripheral portion. In addition, on a flat roof, etc. that is stretched with the rest of it left alone, cut a long floor material that has the required width and is mainly made of polyvinyl chloride into the required length on the upper surface of the waterproof sheet. Laying and laying the edges of the floor materials or a portion near the edges with a tetrahydrofuran solvent-based adhesive
The gist is a method of tensioning a floor material on a waterproof sheet stretched flat roof, which is characterized in that it is joined to a waterproof sheet with an adhesive width of -60 mm.

Here, the waterproof sheet is made of a soft polyvinyl chloride sheet, which is a long sheet having a width of, for example, about 1 to 2 m, and the thickness thereof is usually about 1.0 to. It is 2.5 mm.

The side edges of adjacent tarpaulins are connected, for example, by overlapping the side edges of one of the tarpaulins with the side edges of the other tarpaulin so that the tarpaulins on the upper side in the superposed state. It suffices to join the side edge portion of No. 1 and the side edge portion of the lower waterproof sheet.

On the other hand, the floor material is made of polyvinyl chloride as a main material and is usually made of a sheet in which a reinforcing material such as a woven cloth or a nonwoven cloth made of synthetic resin fiber such as polyester or polyethylene or glass fiber is embedded. Is
This is, for example, a long one having a width of about 1 to 2 m, and its thickness is usually about 1.0 to 3.0 mm.

In the method of the present invention, since the waterproof sheet and the flooring material are both made of polyvinyl chloride sheet, the adhesive agent for joining them is tetrahydrofuran alone or a small amount of vinyl chloride resin in tetrahydrofuran, Alternatively, a tetrahydrofuran-based solution adhesive in which a resin such as a copolymer of vinyl chloride and vinyl acetate is dissolved is used.

According to the method of the present invention, the peripheral edge portion or the peripheral edge portion of the flooring material is joined to the waterproof sheet with a tetrahydrofuran solvent adhesive with an adhesive width of 20 to 60 mm.

If the adhesive width of the flooring material is less than 20 mm, the adhesive strength of the flooring material is not sufficient, and if the pedestrian gets stuck or gets caught on the flooring material after stretching, the flooring material will be damaged. It is not preferable because the flooring material may peel off or may be easily blown off by wind pressure. Further, when the adhesive width of the floor material exceeds 60 mm, the adhesive strength of the floor material becomes too large, and for example, when the floor material is damaged, it is difficult to peel the floor material,
It is not preferable because it is not easy to change the work.

It is desirable that the surface of the floor material is decorated with an uneven pattern or printed, or is provided with a slip stopper due to the unevenness.

In addition, the side edges of the floor material are joined to the upper surface of the waterproof sheet over the entire circumference with a tetrahydrofuran solvent-based adhesive, but the side edges of adjacent floor materials are joined together. , For example, a non-joint joint tape with a width of 5 to 50 mm made of kraft paper or the like coated with an adhesive on one side is provided on the lower side of one of the side edge portions of both floor materials, or on the lower side of both sides. It is attached to the upper surface of the waterproof sheet or the lower surface of the floor material in advance so that it is located across, and the floor material is covered over this joint tape, and the side edge portion of the floor material is applied with a solvent-based adhesive. It may be joined to a waterproof sheet.

Also, together with such joint tape or separately from the joint tape, the above-mentioned 20 to 60 are provided inside the floor material.
If you open the part to be adhered with a width of mm and attach the adhesive flow prevention tape, you can effectively prevent the flow of the adhesive when applying the tetrahydrofuran solvent adhesive. This is preferable because the width of the joint portion of the peripheral portion of the floor material is constant, the workability is extremely excellent, and the working time can be greatly shortened.

As the above-mentioned joined body for joining the waterproof sheet,
A plate material such as a hard or semi-rigid synthetic resin plate, a metal plate, or a steel plate coated with vinyl chloride resin on one side or both sides to improve adhesion is used. In addition, for example, a circular joint and a flat strip-shaped joint are used in the middle portion of the concrete wall of the flat roof, and a strip-shaped joint having a substantially L-shaped cross section is used in the corner of the concrete wall. To do.

As a fixture for fixing the joined body to a waterproof wall such as a concrete wall of a flat roof, for example, an open leg nail, a curl plug or the like is used.

[0018]

According to the above-mentioned method for stretching the flooring material, the peripheral edge portion or the peripheral edge portion of the flooring material is bonded to the surface of the waterproof sheet with an adhesive width of 20 to 60 mm by the tetrahydrofuran solvent adhesive. When re-covering the floor material, it is relatively easy to peel it off, and the old floor material can be easily removed. Similar to the case, an excellent adhesion effect is obtained, and therefore, the re-flooring work of a new floor material can be performed very easily and quickly, and the finish can be performed neatly without any unevenness.

Further, the tetrahydrofuran solvent-based adhesive has a low viscosity, is easy to apply, and has a small number of joints, so that the flooring material can be stretched with excellent workability, and the working time is reduced. It can be greatly shortened.

[0020]

Embodiments of the present invention will now be described with reference to the drawings.

Embodiment 1 Referring to FIGS. 1 and 2 showing the first embodiment of the present invention, first, on the surface of a concrete wall (2) to be waterproofed of a flat roof (1), a waterproofing sheet (3 ) Is joined to the joined body (4) only in the peripheral portion and the required portion in the middle portion, and most of the remaining portion is left standing and stretched.

Then, on the upper surface of the waterproof sheet (3), a long floor material (5) having a width of 1 m and a thickness of 2.0 mm and made of polyvinyl chloride as a main material is cut to a required length and laid, Place the non-bonding joint tape (8) so as to pass over the side edges of the two adjacent floor materials (5) (5), and remove the parts near the periphery of these floor materials (5) (5) with tetrahydrofuran. It was bonded to the waterproof sheet (3) with a bond width of 40 mm using a solvent-based adhesive.

That is, of the two adjacent floor materials (5) (5), first, the lower surface of the peripheral portion of the first floor material (5) on one side is made of kraft paper coated with an adhesive and has a width of 20 mm. Affix the joint tape (8) so that it protrudes from the side edge of the flooring (5) by about half, and for example, the adherend part (5a) with a width of 40 mm from this.
Tetrahydrofuran-based solvent type adhesive is applied to and the part to be adhered (5a) is bonded to the waterproof sheet (3) through the bonding layer (6) of the solvent type adhesive (see FIG. 1A).

Then, on the peripheral portion of the other second floor material (5),
About 10% of the width of the joint tape (8) is left, leaving a width of 10 mm, and a 40 mm width adhered portion (5b) is also coated with a tetrahydrofuran solvent-based adhesive to attach the adhered portion (5b). It is bonded to the waterproof sheet (3) through the bonding layer (6) made of a solvent type adhesive (see Fig. 1B).

Experimental Example Here, in order to test the ease of peeling of the floor material (5) after the waterproof sheet (3) and the floor material (5) were bonded with a tetrahydrofuran solvent-based adhesive, 10 mm width, 20 mm width, 40 mm width,
With a width of 60 mm and a width of 80 mm, join the waterproof sheet (3) with a tetrahydrofuran-based solvent-based adhesive, measure the adhesive strength of each, and assume that the flooring (5) will be replaced. ) Was peeled by hand, and each peelability was tested. The results obtained are summarized in the table below.

[0026]

[Table 1]

As is clear from the results in the above table, the floor material
When the part near the periphery of (5) is joined to the waterproof sheet (3) with a tetrahydrofuran solvent-based adhesive, if the adhesive width of the floor material (5) is 10 mm, the adhesive strength of the floor material (5) is sufficient. Instead, the flooring (5) easily peels off. Also, if the adhesion width of the floor material (5) is 80 mm, the adhesion strength of the floor material (5) becomes too large and the floor material (5) cannot be easily peeled off. For example, when the floor material (5) is damaged. It is not easy to change the work.

Therefore, when the adhesive width of the peripheral portion of the floor material (5) is 20 to 60 mm, the adhesive strength of the floor material (5) is 4 to
18 kgf is suitable, and the flooring material (5) can be easily peeled off by hand. For example, when the flooring material (5) is damaged, the replacement work can be easily performed.

Due to the presence of the joint tape (8) as described above, a non-joint portion having a constant width is formed in the connecting portion of the floor materials (5) and (5), and the waterproof sheet (3) at that portion extends. Is not hindered,
For example, adjacent floor materials (5)
(3) has the advantage that it can effectively prevent breakage of the waterproof sheet (3).

Further, the tetrahydrofuran solvent adhesive has a low viscosity and is easy to apply,
Since the flooring material (5) can be stretched over the upper surface of the waterproof sheet (3) with excellent workability, the working time can be greatly reduced. Moreover, the solvent-based adhesive bonding layer (6) is formed by the polyvinyl chloride resins that compose the waterproof sheet (3) and the flooring material (5) being melted together, so that they are water and heat resistant. It has good durability, can maintain excellent adhesiveness for a long time, and has excellent durability.

The joint body (4) is made of a steel sheet coated with vinyl chloride resin on both sides, and at the corners of the concrete wall (2) of the flat roof (1), a strip plate shape with a substantially L-shaped cross section is formed. In the middle part of the concrete wall (2), a circular joint (4b) and a flat strip-shaped joint (not shown) were used. Moreover, an open leg nail was used as a fixture (10) for fixing the joined body (4) to the concrete wall (2).

At the corners of the concrete wall (2) of the flat roof (1), an adhesive is applied to one side of the inside of this, leaving a bonded portion having a width of, for example, 30 mm from the side edge of the floor material (5). 20mm width adhesive flow prevention tape made of kraft paper (7)
Was attached (see FIG. 2).

Then, a tetrahydrofuran solvent-based adhesive is applied to the peripheral portion of the floor material (5) along the adhesive flow-in prevention tape (7), and the waterproof sheet (3) is applied to the waterproof sheet (3) through the bonding layer (6). Joined.

As the adhesive agent for joining the waterproof sheet (3) to the joined body (4), a tetrahydrofuran solvent type adhesive agent may be used as in the case of the floor material (5) and the waterproof sheet (3). This is preferable because a bonding layer having excellent durability can be obtained.

Further, in the overlapping portion between the floor material (5) and the adjacent waterproof sheets (3) and (3), the sealing material (9) is provided in order to prevent both ends of the gap formed between them. To fill.

Such a sealing material (9) is, for example, a highly viscous material in which the constituent material of the waterproof sheet (3) is dissolved in tetrahydrofuran as it is.
It is preferable to use the one adjusted to have a viscosity of 0 cps.

Embodiment 2 FIG. 3 shows a second embodiment of the present invention. Here, the point different from the case of the first embodiment is that the inside of the joint tape (8) for non-joining is arranged so as to be passed to the side edge portions of two adjacent floor materials (5), (5). For example, by opening the adhered parts (5a) (5b) with a width of 30 mm, the adhesive flow prevention tape (7)
Is attached.

That is, of the two adjacent floor materials (5) and (5), first, on the lower surface of the peripheral portion of the first floor material (5) on one side, a non-bonded 20 mm wide kraft paper coated with an adhesive is applied. The joint tape (8) is attached to the floor material (5) so that the joint tape is protruded from the side edge of the floor material (5) by about half, and the adhered portion (5a) having a width of, for example, 30 mm is opened to have the same width. Attach the adhesive flow prevention tape (7) (see Fig. 3 (a)).

Then, a tetrahydrofuran solvent-based adhesive is applied to the adhered part (5a) near the peripheral edge of the first floor material (5), and the adhered part (5a) is bonded to the bonding layer by a solvent-type adhesive.
Join the tarpaulin (3) via (6). Then, on the other side of the second floor material (5), a width of 10 mm, which is about half the size of the joint tape (8), and a width of the bonded portion (5b) of 30 mm are added to the inner side of the second floor material (5). A 20 mm wide adhesive tape (7) made of kraft paper with an adhesive applied to one side is attached to the tape (see Fig. 3B).

Then, along with the adhesive flow-in prevention tape (7), a tetrahydrofuran solvent type adhesive is applied to the adhered portion (5b) near the periphery of the second floor material (5), and the adhered portion is adhered.
(5b) is joined to the waterproof sheet (3) through the joining layer (6) made of a solvent type adhesive (see FIG. 3C).

Third Embodiment FIG. 4 shows a third embodiment of the present invention. Here, the difference from the case of the second embodiment is that adjacent floor materials
(5) At the side-to-side mating part of (5), a 20 mm width non-joint joint tape (8) made of kraft paper with adhesive applied on one side is used for both floor materials (5) (5). The first floor material (5) on the left side of the side edge portions is attached in advance so as to be located on the lower surface of the side edge portion.

That is, the non-joint joint tape (8)
After pre-adhering it so that it is located on the lower surface of the side edge of the first floor material (5) on the left side, open the adhered portion (5a) with a width of, for example, 30 mm, and apply the same width to the inside. Attach the adhesive flow prevention tape (7) that you have (see Fig. 4A).

Then, a tetrahydrofuran solvent-based adhesive is applied to the adhered portion (5a) near the periphery of the first floor material (5), and the adhered portion (5a) is bonded to the joining layer by a solvent adhesive.
Join the tarpaulin (3) via (6). Then, on the other side of the second flooring material (5), the width of the adhered portion (5b) of 30 mm is left on the inner side of this, and the adhesive of 20 mm width made of kraft paper is coated on one side. Attach the flow prevention tape (7) (see Fig. 4B).

Then, along with the adhesive flow-in prevention tape (7), a tetrahydrofuran solvent-based adhesive is applied to the adhered portion (5b) at the peripheral portion of the second floor material (5), and the adhered portion ( 5b) through the bonding layer (6) of solvent adhesive to the waterproof sheet (3)
(See FIG. 4C).

The wall (2) to be waterproofed of the flat roof (1) in each of the above-mentioned embodiments is usually made of concrete, but it is also made of precast concrete board, lightweight cellular concrete board, wood or the like. May be.

Further, in each of the above-mentioned embodiments, the case of applying the floor covering method according to the present invention to the flat roof (1) has been described. The same applies to the case where a floor material is stretched on the floor surface of the waterproof sheet stretched.

[0047]

As described above, the flooring method of the present invention joins the waterproof sheet made of soft polyvinyl chloride to the surface of the wall to be waterproofed to the bonded body only at the required portion such as the peripheral portion. And on the flat roof, etc., where the rest of the majority was stretched,
On the upper surface of the waterproof sheet, a long floor material having a required width and mainly made of polyvinyl chloride is cut to a required length and laid out. 20 to 60 mm through a solvent-based adhesive
With the adhesive width of, the tetrahydrofuran-based solvent-based adhesive has a low viscosity, is easy to apply, and has a small number of joints. It can be carried out, and the working time can be greatly shortened as compared with the case of whole surface adhesion using a conventional epoxy resin adhesive.

Further, since the floor material is bonded to the surface of the waterproof sheet only at the peripheral edge portion or a portion near the peripheral edge thereof with an adhesive width of 20 to 60 mm by the tetrahydrofuran solvent adhesive, the peeling is relatively easy. When re-covering the floor material, the old floor material can be easily removed.
Also, just by slightly shifting the position of the new floor joint with respect to the tarpaulin, the same excellent adhesive effect as in the initial case can be obtained, which makes renewal work of the new floor very easy and quick. Moreover, there is an effect that the finish can be performed neatly without producing unevenness.

In addition, since the solvent adhesive adhesive bonding layer is formed by mutually melting the polyvinyl chloride resins constituting the waterproof sheet and the flooring material, it has good water resistance and heat resistance and can be used for a long time. Excellent adhesion can be maintained, there is no need to seal the entire circumference of the floor with sealing material, and even if the air layer between the tarpaulin and the floor expands, the uneven shape is hardly noticeable The effect is that the appearance is very beautiful.

According to the method of the present invention, the waterproof sheet stretched on the flat roof or the like can be sufficiently protected by the floor material, and therefore, for example, it is possible to walk in the middle with leather shoes or high heels, and badminton or the like. It is capable of playing sports enough.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view of an essential part showing a flat roof of a first embodiment to which a floor material tensioning method of the present invention is applied.

FIG. 2 is an enlarged sectional perspective view of a main part of the flat roof.

FIG. 3 is an enlarged cross-sectional view of an essential part showing a flat roof of a second embodiment to which the flooring method of the present invention is applied.

FIG. 4 is an enlarged sectional view of an essential part showing a flat roof of a third embodiment to which the method for stretching a flooring material according to the present invention is applied.

[Explanation of symbols]

1 Flat roof 2 Concrete wall to be waterproofed 3 Waterproof sheet made of soft polyvinyl chloride 4 Bonded body 5 Floor material made of polyvinyl chloride 6 Bonding layer with tetrahydrofuran solvent-based adhesive 7 Adhesive inflow prevention tape 8 Non-joint joint tape 9 Seal material 10 Fixing bracket

Claims (1)

Claims: 1. A waterproof sheet (3) made of soft polyvinyl chloride is bonded to the surface of the wall (2) to be waterproofed, and only a required portion such as a peripheral edge is bonded to the bonded body (4). In a flat roof (1) where the rest of the floor is stretched and stretched, a long floor material that has a required width and is mainly made of polyvinyl chloride is placed on the upper surface of the waterproof sheet (3).
Cut (5) to the required length and lay them out.
A method for laying a floor material on a waterproof roof-lined flat roof, etc., characterized in that the peripheral edge part or a part near the peripheral edge is bonded to the waterproof sheet (3) with an adhesive width of 20 to 60 mm using a tetrahydrofuran solvent adhesive. ..