JP3020071B2 - Tile sheet with temporary joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary jointed tile sheet in which a tile and a film used in a tile PC board pre-installation method or the like are integrated.

[0002]

2. Description of the Related Art Conventionally, in tile construction on a building or the like, tiles have been bonded and integrated with a concrete mortar on site one by one. However, this method is tedious and very inefficient. Therefore, a plurality of tiles are arranged at predetermined positions on a film or sheet made of an adhesive-applied polypropylene, polyethylene, paper or the like, and a rod-like product of polyethylene foam is placed between and around the entire area as temporary joints. Or, the tile position is filled with a pre-punched polyethylene foam sheet to make a tile-integrated sheet with temporary joints, and then a concrete mortar is poured directly from the back side of the sheet-integrated product. An enforcement law has been implemented in which a PC board with a tile of a concrete and tile integrated product is made to have a constant thickness, and the PC board is directly attached to a wall surface of a building.

[0003] However, in this method, the accuracy of the tile baking dimensions is low, and on the other hand, due to the distortion of the polyethylene sheet, or the displacement of the tile during the movement of the tile-integrated sheet, the tile is displaced. When a gap occurs between the tile and the polyethylene foam as the temporary joint, or a phenomenon occurs such that the tile peels off from the adhesive, the concrete is removed.
When the mortar is poured, the concrete mortar liquid (commonly referred to as "NORO") flows to the side and surface of the tile and solidifies to cause contamination, or the polyethylene foam used as the temporary joint is buried in the concrete mortar and is difficult to remove. This causes problems in workability, enforcement law, appearance, etc.

Further, since the adhesive strength between the polyethylene foam and the pressure-sensitive adhesive is extremely low, the pressure-sensitive adhesive sheet is hardened after the concrete is solidified.
When peeling off the tile from the tile, the temporary joint polyethylene foam may remain on the tile joint, and there is a disadvantage that it is troublesome to remove.

[0005] One of the solutions to such a problem is to use a foamed polyolefin sheet having a surface wetting tension of 40 dyne / cm or more as a temporary joint, and to bond the tile to an adhesive. There is a method in which the force is improved (see JP-A-1-158164). However, in the prior art, only the adhesion between the foamed polyolefin sheet and the sheet is improved, and specifically when the dimensional accuracy of the tile is poor or the gap between the tile and the temporary joint is generated due to the displacement of the tile or the like. It is still not enough to prevent the above-mentioned slags from being caused by contamination of concrete slags.

[0006]

SUMMARY OF THE INVENTION The present invention is based on the results of various studies conducted on a tile sheet with provisional joints so as to prevent the generation of slag at the time of application and to make it possible to easily peel off the temporary joints after hardening by applying concrete mortar. SUMMARY OF THE INVENTION An object of the present invention is to provide a tile sheet with a temporary joint, which can prevent contamination based on concrete sintering, can easily peel off a temporary joint from a sheet, and has a beautiful finished tile surface. It is in.

[0007]

That is, the gist of the present invention is that a plurality of tiles are arranged at predetermined intervals, temporary joints are arranged between the tiles, and these are interposed with a film, paper or sheet through an adhesive. A tile having a linear expansion coefficient of 5% or more.
A tile sheet with temporary joints, characterized by being a water-swellable foamed plastic having a layer, comprising a plurality of tiles.
Are arranged at predetermined intervals, and the coefficient of linear expansion between the tiles is
Made of foamed plastic with 5% or more skin layer
Arrange the joints and attach them to the film, paper,
Or a tile sheet with temporary joints integrated with the sheet.
Before the work, the joint is swollen in advance with moisture.
And a method of constructing a tile sheet with temporary joints .

The water-swellable foamed plastic used as the temporary joint preferably has the following properties when absorbing water . Expansion speed 5% Time to linear expansion within 5 minutes Product hardness Hardness at 50% compression 100 g / cm ²

When the tile sheet with temporary joints is constructed, it is desirable that the temporary joints be swollen in advance with moisture.

(Function) The reason why the water-swellable foamed plastic used as a temporary joint in the present invention preferably has the above-mentioned properties when absorbing water is as follows. That is, when the concrete mortar is driven in, the whole foamed plastic absorbs water and swells. As a result, the foam of the foamed plastic becomes small and becomes clogged, and the foam itself expands and the foam adheres to the tile side wall. At the same time, it continued to expand further and pressed against the tile side wall, and this clogging and pressing force made it possible to prevent the mortar from entering the concrete mortar.

For this reason, the coefficient of linear expansion of the foamed plastic due to water absorption is preferably 5% or more, more preferably 10%.
That is all. If it is less than 5%, it is difficult to prevent the concrete mortar from sticking out due to the above-mentioned clogging and pressing force, and it is not possible to cope with a deviation such as a punching dimensional error of a foam sheet having a variation in tile size.

It is desirable that the expansion rate be high. If it is slow, the injected concrete mortar infiltrates a large amount on the tile surface until the foam swells sufficiently and causes contamination, so that the time required for the coefficient of linear expansion to reach 5% is 5%. It is preferably within minutes.

[0013] The hardness of the foam as a temporary joint is 50.
% Compression hardness is preferably 100 g / cm ² or more. In the case of less than this, the foam is deformed by the injection of the injected concrete mortar and its weight, and the foam is deformed, and when the foam is peeled, unevenness is generated on the construction surface, or the foam enters the unevenness and it is difficult to peel off. It may be torn, causing problems in appearance and construction.

As the foamed plastic used in the present invention,
Is shall be the water-swellable contain a water-swelling resin to the calling foam.

[0015]

Examples of the water-swellable resin-containing foamed plastic include natural polymers such as starch and cellulose, acrylic acid, polyurethane and polyvinyl alcohol.
And rubber-based, urethane-based, and polyolefin-based foamed plastics to which a water-absorbing polymer such as a polyester is added. Particularly preferred is a resin which makes the resin itself hydrophilic and further contains a swellable resin. For example, a hydrophilic polyurethane foam containing a water-absorbing polymer such as an acrylic acid-based polymer can be used. When this is used as a temporary joint, not only can the infiltration of slag into the tile surface and side surfaces be prevented, but also the adhesiveness with the adhesive sheet is good. It is good without any remaining problem.

The form of the cells in the foam of the present invention may be either an open cell or a closed cell, or a mixture of these.

More preferably, the foamed plastic used in the present invention has a skin layer on at least one surface. The reason is that the skin layer is advantageous for adhesion to the sheet bonding the tile, and after the concrete mortar is poured, the concrete mortar and the foam are easier to peel off than in the case of skinless. This is because the surface condition of the joint becomes smooth at the same time.

The film and pressure-sensitive adhesive used in the present invention may be any as long as they are conventionally used for this kind of tile sheet with temporary joints. To list them, examples of the film include materials such as polyethylene, polypropylene, and polymethylpentene, as well as fiber sheets, laminated paper in which the surface of paper or paper is resin-treated, and the like.

As the pressure-sensitive adhesive, there are pressure-sensitive adhesives such as acrylic, starch-based, and rubber-based pressure-sensitive adhesives which are generally used for pressure-sensitive adhesive tapes. And so on.

The above-mentioned coefficient of linear expansion, hardness and swelling rate are measured by the following test methods.

1) Linear Expansion Coefficient The foamed plastic was immersed in water 10 cm below, and the dimensional change after one hour in the axial direction (parallel to the tile) was divided by the dimension before the test to obtain the linear expansion coefficient.

2) Hardness (Compression Hardness) The size of the test piece is a square having a side of 30 mm and a thickness of 20 mm.
mm or more and compressed at a speed of 50 mm / s with a compression tester to give a strain of 55% of the test piece at the first time, and a second time after 30 seconds of opening to perform a predetermined compression ratio (50%). %)
The compression force at the time of reaching is read and converted into a unit. 3) Expansion speed (1) The time required to reach a linear expansion coefficient of 5%.

Next, a method of using the tile sheet with temporary joints according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a tile sheet with provisional joints, and FIG. 2 is a sectional view taken along line AA. 1 is a tile, 2 is a temporary joint, 3 is an adhesive, and 4 is a plastic film. 5 indicates a contact portion between the tile and the temporary joint, and 6 indicates a contact portion between the tile and the adhesive.

3 and 4 show the order of construction when the tile sheet with temporary joints is constructed. First, the tile sheets with temporary joints are arranged inside the formwork 7 as shown in FIG.
Pour in mortar 9. After the concrete mortar is cured, when the mold 7 and the plastic sheet are removed, the temporary joint is removed together with the film, and thereafter, a joint made of the concrete mortar is formed. When the conventional tile sheet with temporary joints was used, the occurrence of slag as shown by 10 in FIG. 4 was observed, but when the tile sheet with temporary joints according to the present invention was used, this occurred. No such slime occurs.

When the tile sheet with temporary joints according to the present invention is constructed, it is preferable to sufficiently swell the tile sheet with water before pouring the concrete mortar. In other words, swelling the swellable foamed plastic, which is a temporary joint with water, not only eliminates the gap between the tile and the temporary joint, but also causes a stress between the tiles due to the swelling of the temporary joint, thereby reducing the force due to the flow of the concrete. Prevents the passage of influences and slimes, resulting in a pollution-free tile finish. Next, the present invention will be described more specifically with reference to examples.

[0027]

【Example】

Example 1 It carried out using the hydrophilic urethane foam as a temporary joint of the foamed plastic shown in FIG.

Polyetherpolyol FA103 (OH
V56 manufactured by Sanyo Chemical) 50 g, POP34 / 28 (OHV
26 Mitsui Toatsu) 50g, MDI as isocyanate
-60 g of LK (manufactured by Mitsui Toatsu), 1 g of commercially available silicone-based foam stabilizer, 33 LV of catalyst (manufactured by Sankyo Air Products) 0.05
g, Stanas octoate (manufactured by Yoshitomi Pharmaceutical) 0.10 g,
1,4, butanediol (manufactured by Tosoh) as a crosslinking agent 7
g, water 2 g, Sumikagel S of acrylic acid-based water-absorbing resin
A sheet of polyurethane foam (with double-sided skin) integrally containing P-520 (manufactured by Sumitomo Chemical) was obtained. The performance is as shown in Table 1 below.

The above-mentioned form is cut into a predetermined size and packed between tiles (to make the skin surface parallel to the tile surface) to form a tile-integrated sheet. As a result of confirming the state of occurrence, no solidified concrete was wrapped around the tile surface and side surfaces.

When the film was peeled off after the hardening of the concrete, the inserted polyurethane foam was sufficiently adhered to the film and could be peeled off integrally with the film without remaining in the concrete and tile portions. The concrete surface (joint portion) after the peeling of the foam was smooth, and the contact surface of the skin portion had higher smoothness.

When the concrete is driven in by the pre-adhesion method using a tile integrated sheet with temporary joints, the polyurethane foam is sprayed with water in advance to cause swelling, and then the concrete is swelled. When the metal was driven into the joint, the surface condition of the joint portion was further excellent, the peeling was light, and no generation of slag was observed. The swellable polyurethane foam
Table 1 shows the performance table of the system.

[0032]

[Table 1]

Example 2 As a temporary joint shown in FIG. 1, a tile-integrated sheet was made of an open-celled polyethylene foam containing a water-absorbing resin.

As the open-cell foamed polyethylene containing a water-absorbing resin, Opcel LC-300 of foamed polyethylene is used.
# 2 (manufactured by Sanwa Chemical Industry Co., Ltd.) and a toluene solution of urethane prepolymer-A-433NS (manufactured by Takeda Pharmaceutical) using acrylic acid-based water-absorbing resin Sumikagel SP-520 (manufactured by Sumitomo Chemical) as a water-absorbing resin. Was impregnated.

Thereafter, it was dried in a hot air circulating drier at 80 ° C., and further cured at 70 ° C. × 100% humidity for 1 hour to obtain a continuous porous polyethylene foam containing a water-absorbing resin.

Tile using the above foamed polyethylene
Tile table by hitting concrete on body sheet
No generation of concrete slag on the surface or side
Was. Physical properties of the above foamed polyethylene Density 0.18g / cm^Three Tensile strength 2.0 Kg / cm^Two  Linear expansion coefficient 7%

[0037]

[0038]

(Comparative Example) In Comparative Example 1, foamed polyethylene was used, and in Comparative Example 2, an ester-based urethane foam was used, and a concrete was implanted as a tile-integrated sheet. An amount of solidified concrete was adhered and contaminated on the tile side surface or tile surface. (The physical properties of Comparative Examples 1 and 2 are shown in Table 2.)

[0040]

[Table 2]

In both cases, the form has poor adhesion to the tape, and when the tape is peeled from the concrete, the form is easily peeled off from the tape and remains on the concrete. I have.
The peeling of the foam remaining on the concrete was severe and the peeling was poor.

[0042]

As described above, according to the present invention, the pores of the open cells of the foam swell inside and outside due to water absorption during construction,
It is considered that the pores become smaller and a clogging effect is obtained in which the mortar of concrete mortar enters. Therefore, even if some water passes through and comes into contact with the tile surface, the mortar of the concrete mortar does not pass through, so that contamination due to adhesion to the tile surface does not occur and the efficiency of finishing work and the like can be improved.

Further, the peeling of the concrete and the foam is easy, and it is possible to easily peel the foam in any case.
This is a great effect of the present invention. The fact that the peeling of the concrete from the foamed plastic which is the temporary joint material is easy and the joint of the peeled surface is smooth means that the water-swellable foamed plastic surface of the present invention absorbs water even when the concrete is peeled off. It is considered that peeling is easy and the joint becomes smooth because of the wet state. Further, the foam hardness is maintained by water absorption, and no irregularities occur at the interface with the concrete.

[0044]

[Brief description of the drawings]

FIG. 1 is a perspective view of a tile sheet with temporary joints .

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is an illustration of a method of constructing a tile sheet with temporary joints,
Diagram showing cleat mortar pouring

FIG. 4 is an explanatory view of a method of constructing a tile sheet with temporary joints, showing a state in which a formwork is removed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tile 2 Temporary joint 3 Adhesive 4 Plastic film 5 Contact surface of tile and temporary joint 6 Tile and adhesive and adhesive surface 7 Formwork 8 Concrete pouring hole 9 Concrete mortar 10 Concrete mortar

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Noboru Murata 1170-1 Ako, Komagane-shi, Nagano Japan, within Hatsujo Co., Ltd. (56) References Japanese Utility Model 1979-92614 (JP, U) Japanese Utility Model 2-29160 (JP, Y2) J. 58-53390 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04F 13/08 102

Claims (2)

(57) [Claims] 1. A tile sheet having a temporary joint formed by arranging a plurality of tiles at predetermined intervals, arranging temporary joints between the tiles, and integrating these with a film, paper or sheet via an adhesive. in DOO, temporary joint linear expansion coefficient have a 5% or more of the skin layers and of containing a water-swelling resin to the foam
A tile sheet with a temporary joint, characterized by being a water-swellable foamed plastic. 2. A plurality of tiles are arranged at a predetermined interval, and a skin layer having a linear expansion coefficient of 5% or more is provided between the tiles.
And a temporary joint made of water-swellable foamed plastic in which a water-swellable resin is contained in a foam, and these are integrated with a film, paper or sheet via an adhesive to provide a temporary joint. A method for constructing a tile sheet with temporary joints, which comprises swelling the temporary joints with moisture before applying the tile sheet.