JPH072390B2 - Sheet with decorative aggregate and method for manufacturing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exposed aggregate finish for concrete for landscape decoration, and more particularly to a decorative aggregate loading sheet on which desired aggregate is loaded in a desired state and a method for producing the same.

[0002]

2. Description of the Related Art Up to now, a method called a washing method has been used as a generally known method for exposing aggregate of concrete. In this method, mortar with kneaded aggregate, that is, kneaded with seed stone, is driven onto the concrete substrate, and while the mortar is half hardened, the surface mortar is washed away to expose a part of the aggregate, or kneaded with the aggregate. After driving the mortar, the surface of the mortar is retarded by means such as spraying a surface-hardening retarder on the surface of the mortar, or coating the surface of the mortar with a hardening-retarding sheet. It is a method of washing away the surface layer of to expose a part of the aggregate.

[0003]

However, in the above-mentioned washing method, since the mortar is washed away with a large amount of water, a large amount of inorganic substances including heavy metals must be treated, and expensive seed stones or aggregates are required. As described above, there are problems in that a large amount of them must be used and that it requires a long time and high technology to perform decorative finishing of complicated patterns. An object of the present invention is to solve the problems that the above-mentioned conventional art has, and to provide a widely applicable aggregate mounting sheet in which a desired aggregate is mounted in a desired state in advance and a manufacturing method thereof. .

[0004]

The above object is to provide a sheet for mounting a decorative aggregate, in which an adhesive layer is provided on a sheet-like support, and a part of the decorative aggregate is embedded and fixed in the adhesive layer. In the above, the sheet has flexibility to withstand bending at an angle of 90 degrees, and the adhesive strength of the adhesive to the aggregate is 3 N / cm or more in a room temperature dry state and 2 N / cm or less in a wet state. The adhesive force to the body is sufficiently larger than the adhesive force to the aggregate, and the aggregate is a single kind or a mixture of plural kinds of materials having a desired size, shape and color tone, and is arranged in a desired pattern. To be a decorative aggregate mounting sheet characterized by that, and the step of mounting the decorative aggregate on an adhesive sheet formed by applying an adhesive, preferably a hot-melt adhesive to the sheet-shaped support,
It can be achieved by providing a method for manufacturing a decorative aggregate-carrying sheet, which comprises a step of burying a part of the aggregate in the pressure-sensitive adhesive layer by at least one of heating and pressing. .

[0005]

In the above, as the flexible sheet, various materials such as plastic film, cloth, paper and non-woven fabric can be used, but the plastic film is suitable in terms of strength and easy handling.

In addition, the adhesive for fixing the aggregate must be flexible and have unique adhesive properties.
The aggregate mounting sheet may undergo various deformations during manufacture, transportation or use. Practically, it is sufficient if it can follow a bending of about 90 degrees. Further, the adhesive strength of the adhesive has sufficient strength to fix the aggregate, but it must be such that it can be easily peeled off during removal. According to the experiments by the inventors, if the adhesive strength to the aggregate at room temperature, that is, the peeling strength is 3 N / cm or more, the aggregate is unlikely to fall off. Further, in order to allow mortar or concrete to be hardened and then hardened so that the sheet can be easily peeled from the surface of the aggregate, the adhesive force must be reduced to 2 N / cm or less. 2 N / cm
Even in the above cases, the peeling can be carried out, but a great burden is imposed on the operator. Immediately after construction, the mortar is driven while holding a large amount of water, and some moisture is present at the interface between the adhesive and the mortar even when the sheet is peeled off.
Further, water gradually penetrates into the interface between the aggregate and the adhesive. Therefore, the above conditions cannot be satisfied unless an adhesive having a large adhesive force in a dry state and a decrease in contact with water is used. Furthermore, in order not to leave the adhesive on the aggregate surface when peeling the sheet, the cohesive force of the adhesive is sufficiently higher than 2 N / cm, and the adhesive force to the support is higher than the adhesive force to the aggregate or mortar. Must be big enough. Although there are many flexible adhesive sheets having such adhesive properties, an adhesive sheet, particularly an adhesive sheet using a hot-melt adhesive, is most suitable from the viewpoint of ease of use.

The use of an adhesive sheet is also advantageous for mounting an aggregate. It is possible to fix the mounting position by simply sprinkling the aggregate on the surface of the adhesive sheet and attaching it to it. Also, the aggregate to be installed has various sizes, shapes, and
The color tone is required, and the pattern required by the builder in the finished state is various, and the construction material must meet these requirements, but if an adhesive sheet is used, for example, the required pattern An aggregate sheet having an arbitrary pattern can be created by repeating an operation of covering the adhesive layer with the release paper pattern prepared together and sprinkling the aggregate.

As a method of embedding and fixing a part of the aggregate in the adhesive, (1) a fluid pre-adhesive is applied on a support, and the aggregate is partially contained in the pre-adhesive. Method of placing the part so that the part sinks, and then hardening the pre-adhesive, (2) providing a pressure-deformable adhesive layer on the support, placing the aggregate on the layer, and then applying pressure to the aggregate How to embed in the adhesive,
(3) There is a method in which a hot melt adhesive is applied on a support, and an aggregate is placed on the adhesive and then heated to be embedded in the adhesive. In the case of the methods (2) and (3), it is convenient to use a pressure sensitive adhesive coated sheet as the adhesive coated sheet. In particular, when a hot-melt adhesive is used as the adhesive, it is extremely easy to manufacture the aggregate-loaded sheet. That is, the aggregate can be mounted on the entire surface of the adhesive layer simply by sprinkling the aggregate on the adhesive surface. When the aggregate mounting sheet is heated, the adhesive is softened and the aggregate is self-weighted. Sink in. The degree of burial of the aggregate in the pressure-sensitive adhesive layer depends on the characteristics of the support and pressure-sensitive adhesive of the pressure-sensitive adhesive sheet, the thickness, the heating temperature and the heating time. It is possible to produce an aggregate-carrying sheet that conforms to.

The flexible aggregate-carrying sheet can be finished in various forms such as a flat form and a roll-like form. It can also be lined with a rigid support, such as a plywood, to facilitate handling. Flexible and deformable,
Not only can the shape of the product be in the desired state, but the application state of construction is also diverse, and it can be easily applied to the aggregate exposed finish at a place having a curved surface.

[0010]

EXAMPLES The decorative aggregate mounting sheet and the method for producing the same according to the present invention will be specifically described below with reference to Examples.

[0011]

Example 1 FIG. 1 is a cross-sectional view showing the structure of an example of an aggregate-loaded sheet of the present invention, in which a styrene / butadiene / styrene block copolymer is used as a base on a support 1 made of a polyester film having a thickness of 35 μm. Aggregate 3 with adhesive 2
Indicates that it is fixed and installed.

The pressure-sensitive adhesive used in the above sheet has a pressure-sensitive adhesive force (that is, an adhesive force) of 8 N / cm or more to the support, and the pressure-sensitive adhesive force to marble used as a substitute for the aggregate is 6 N / cm at room temperature and in a dry state. The wet state was 1.4 N / cm. Also,
The aggregate-carrying sheet did not fall off even when bent to 30 degrees.

FIG. 2 is a perspective view showing a structure of a product in which an aggregate is mounted on a long sheet and rolled into a roll, and FIG. 3 is a sectional view showing a state in which the sheet is lined with a veneer plate 4.

[0014]

Example 2 A polyester film having a thickness of 35 μm has about 150
A low-viscosity rubber-based pressure-sensitive adhesive that softens at 0 ° C. was applied to a thickness of about 1 mm to prepare a 30 cm × 30 cm pressure-sensitive adhesive sheet. This adhesive sheet was sprinkled with a decorative aggregate having an average particle size of about 8 mm, and the aggregate was mounted on the entire surface of the sheet. Next, the aggregate-carrying sheet was placed in an electric furnace heated to 150 ° C. for 15 minutes to sufficiently immerse the aggregate in the adhesive layer. Finally, the sheet taken out of the electric furnace was cooled indoors to obtain an aggregate-loaded sheet.

The sheet obtained as described above showed sufficiently satisfactory characteristics as the sample of Example 1.

[0016]

As described above, by using the decorative aggregate mounting sheet and the method for manufacturing the same of the present invention, it is possible to solve the problems of the prior art and to obtain a desired aggregate in advance. It was possible to provide a decorative aggregate-loaded sheet having a wide range of applicability and a method for producing the same.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of an embodiment of a decorative aggregate sheet of the present invention.

FIG. 2 is a perspective view showing a state in which a long decorative aggregate sheet is rolled up.

FIG. 3 is a cross-sectional view showing the structure of an aggregate-carrying sheet backed by a solid support plate.

[Explanation of symbols]

 1 ... Support, 2 ... Adhesive, 3 ... Aggregate, 4 ... Support plate.

Front page continuation (72) Inventor Hiroyuki Enomoto 3819 Noborito, Tama-ku, Kawasaki City, Kanagawa Prefecture Sliontech Co., Ltd. (72) Inventor Hiroyuki Ogawa 1-4-3, Kotobuki, Fuchu, Tokyo (72) Invention Yutaka Tamura 1-4-3 Kotobuki-cho, Fuchu-shi, Tokyo Inside Celtec Co., Ltd.

Claims (5)

[Claims] 1. A decorative aggregate-carrying sheet comprising an adhesive layer provided on a sheet-like support, and a part of the decorative aggregate is embedded and fixed in the adhesive layer, the sheet having an angle of 90 degrees. The adhesive strength of the adhesive to the aggregate is 3 N / cm or more in a room temperature dry state and 2 N / cm or less in a wet state, and the adhesive force to the support is to the aggregate. A decorative bone characterized in that the aggregate is sufficiently larger than the adhesive force and the aggregate is a single kind or a mixture of plural kinds of materials having a desired size, shape and color tone, and is arranged in a desired pattern. Material mounting sheet. 2. The decorative aggregate mounting sheet according to claim 1, wherein the decorative aggregate mounting sheet is formed into a flat shape or a roll winding shape. 3. The decorative aggregate mounting sheet according to claim 1, wherein the decorative aggregate mounting sheet is lined with a support plate that is rigid and easily separated. 4. The decorative aggregate-installed sheet according to claim 1, wherein the adhesive is a hot melt adhesive. 5. A step of mounting a decorative aggregate on an adhesive sheet obtained by applying a hot melt adhesive to a sheet-shaped support,
A method for manufacturing a decorative aggregate-carrying sheet, comprising a step of burying a part of the aggregate in the pressure-sensitive adhesive layer by at least one of heating and pressing.