JPS644552Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Purpose of the invention) This invention was designed to replace all items made from so-called natural stones, such as curb stones, garden stones, pots, vases, ashtrays, ornaments, etc., either as they are or by appropriately processing them. The purpose of the present invention is to provide a pseudo-stone with a completely new structure, which is formed to have an appearance almost comparable to that of natural stone, in place of natural stone.

(Prior art) Most of the so-called pseudo-stones that have been proposed or put into practical use are made by adding aggregate and simple coloring to cement, or adding natural stone powder or granules to them and molding them. This was achieved by forming a finishing layer as appropriate. However, in terms of appearance, most of these conventional stones did not have the texture of natural stone and had an appearance that indicated that they were artificially created.

When we investigate the technical causes of this, we find that these artificially created objects gradually weather due to exposure to the wind and rain, and dirt and other debris adheres to and accumulates in the concavities on their surfaces, resulting in an overall halo. This is due to the fact that it was not possible to achieve the appearance of natural stone, which has irregular shading due to changes in the pale color of the wind. This is thought to have been caused by problems with the materials, such as, and problems with the surface structure, such as the surface forming layer.

With this idea, as a result of continued intensive development and research based on the above viewpoints, we have succeeded in creating a pseudo-stone that has an appearance extremely similar to natural stone, and its composition is as detailed below. It is.

(Structure of the device) As can be clearly understood from the representative example of this device shown in the drawings, carbon particles are mainly formed in the concavities on the surface of the solid 1, which is formed into an appropriate shape by solidifying cement and crushed pumice. It is a pseudo stone formed by forming a colored layer 2 containing 3, a clay residual part 4 to which cement has been added in some of the surface recesses, and finishing the entire surface with an appropriate polish.

Solid 1 has approximately 1:1 ratio of cement and crushed pumice.
The mixture is mixed in the following proportions, water is added, and the mixture is solidified into a predetermined shape.

To explain this process of hardening into a predetermined shape in more detail, let's take the example of realizing the shape of a sample of the solid 1 to be made, such as a natural stone such as a garden stone or curbstone. A sample is selected, a generous amount of silicone resin is applied to its surface, and once it has hardened, the silicone resin layer is peeled off to create a silicone mold.

This silicone mold is quite elastic, so even if it is round, as long as a part of it is open, it is relatively easy to remove the stone by inserting your hand into the open part. It can be removed,
The inner surface of the removed silicone mold is imprinted with the same surface shape of the natural stone sample.

Next, plaster is poured into the silicone mold from the same place with the open part facing up, and the elastic silicone mold is corrected to maintain its external shape as much as possible, and then allowed to solidify. Then, with the silicone mold left on the surface of the hardened plaster, turn it upside down (so that the lower part becomes the open part of the silicone mold) and place it in the center of a box-shaped formwork for pouring concrete. Place concrete within the frame,
Let it harden.

In addition, when pouring plaster into a silicone mold, if you are trying to form a stone with a hollowed out part around the top of the fake stone that should be made like a washbasin, place the inner bottom of the silicone mold (the actual one) with the open part facing up. A sand bag corresponding to the shape and size of the hollowed out part was placed in the top surface of the artificial stone to be made, and plaster was poured in. Once it solidified, the silicone mold was removed and it solidified further. After carefully pulling out the sand bag from the plaster and adjusting the shape of the area,
Apply a thick layer of silicone resin again to the entire surface of the recess made by the sand bag, and leave it in the center of the previous mold while forming the second silicone mold on the surface of the plaster where the recess was formed. , pouring and curing concrete. Therefore, when making a stone with a hollow part on the top side, instead of the silicon mold described above,
After that, the second silicon type will take its place.

After the concrete has hardened, remove it from the box-shaped formwork, turn it over, make the exposed side of the silicone molded plaster part that was in contact with the bottom plate of the formwork the top side, and carefully crush and remove the plaster from that exposed side. A silicone mold (or second silicone mold) whose periphery is hardened with concrete appears, and the silicone mold (or second silicone mold) can be easily removed from the hardened concrete by utilizing its elasticity.

In this way, a large number of elastic silicone molds are formed, each mold having a shape similar to the surface of the natural stone, and a concrete outer formwork is formed to support the outside of the silicone molds. The outer periphery of the silicone molds is then supported by the concrete outer formwork, and a paste made of cement and crushed pumice is poured in. After a prescribed curing period is allowed to harden, the concrete outer formwork is removed, and the silicone mold is then peeled off utilizing its elasticity, resulting in a solid 1 which has a shape that very faithfully reproduces the uneven surface of the sample natural stone on the entire surface except for the parts that correspond to the open parts of the silicone mold.

In addition, in order to ensure smooth release, this concrete outer formwork can be divided into multiple pieces, so partition plates are placed in advance during concrete pouring, and the concrete is poured and hardened. Alternatively, do not use a partition plate and remove the silicone mold after the concrete has hardened before carefully cutting and dividing.

The colored layer 2 formed on the surface of the solid 1 mainly in the concave portions thereof is formed, for example, by the following process.

First, a water-repellent film layer, for example, a mixed melt of white wax and vegetable oil, is applied and dried as a pre-treatment layer to form a rough water-repellent film layer mainly on the entire convex portion of the surface of the solid 1. When a liquid material made by mixing and stirring carbon particles (carbon powder) with an appropriately selected coloring agent (including a simple solvent) is evenly coated, the liquid material will form a water-repellent coating layer. It is repelled from around the convex portions and is applied mainly to the concave portions of the surface of the solid 1, forming a colored layer 2 containing carbon particles 3 thereon.

Alternatively, as another means, in place of applying the liquid material in the above step, substantially the same purpose can be achieved by directly covering the black smoke of a candle. In the case of this method, the coating layer melts around the convex portions where the water-repellent coating layer is formed, and the adhesion of black smoke (carbon particles) is also prevented, and solids on which the coating layer is not formed. A colored layer 2 containing carbon particles 3 due to black smoke is formed mainly in the concave portions of 1, and in combination with the melted water-repellent coating layer, a color effect with a very halo-like light and shade is created. .

Next, when a slightly hard cement paste mixed with clay is applied to the entire surface of the solid 1 and most of it is immediately wiped off, the carbon particles 3 at the innermost part of the recess on the surface of the solid 1 are applied. colored layer 2
A clay residual portion 4 is partially formed only on the top.

When this residual clay portion 4 has almost settled, the surface of the solid 1 is finally rubbed carefully with a cloth to give it a glossy finish, thereby completing the artificial stone of this invention.

(Function and effect) The artificial stone of this invention, which has the above-mentioned structure, employs carbon particles in the colored layer formed mainly in the concave portions of the solid surface, which combines with the soft texture of the crushed pumice on the solid surface. As a result, we were able to create a structure that reliably brings out the deep, pale halo effect unique to natural stones, so even though they are pseudo-stones, they are mostly natural stones, especially certain types of river stones, Teppei stones, and Chokai stones. It has an appearance that is indistinguishable from natural volcanic stones such as volcanic rock and Mega stone (both produced near the border of Yamagata and Akita prefectures), and some of the colored layers contain residual clay as an upper layer. The combination of layers has been devised to emphasize a more natural feel, creating the appearance of a precious natural stone that looks as if it has been left somewhere for many years. This makes it possible to successfully create a ``fake stone that does not look like a fake stone'', which has never been possible with this type of fake stone up until now.

In particular, this effect is further enhanced when the solid itself is molded from a selected natural stone.

Furthermore, when the carbon particles used in the colored layer are made from oily smoke obtained by burning candles, rather than homogeneous carbon powder that is industrially mass-produced, a deep and pale color can be obtained. The blurring effect becomes even more noticeable, which is extremely advantageous in terms of product value.

On the other hand, the materials constituting the artificial stones of this invention do not consist of any particularly special ingredients, and moreover, they can be manufactured using these materials without a very complicated manufacturing process. Therefore, it is very advantageous in terms of product unit price, and also exhibits the excellent effect of making it possible to provide inexpensive stone products for a wide range of applications.

As mentioned above, the artificial stone of this invention has a
It has excellent features not found in conventional products in all aspects, including economic efficiency and handling as a material, and these features will be highly evaluated.

[Brief explanation of the drawing]

The drawings are based on a typical embodiment of this invention, and FIG. 1 is an overall perspective view thereof, and FIG. 2 is a partially enlarged sectional view. 1...Solid, 2...Colored layer, 3...Carbon particles,
4...Clay remaining part.

Claims (1)

[Claims for Utility Model Registration] 1. Forming a colored layer containing carbon particles mainly in the surface depressions of a solid formed into an appropriate shape by hardening cement and crushed pumice, and forming a colored layer containing carbon particles in some of the surface depressions. A pseudo-stone made by forming a clay residual area with cement added, and then finishing the entire surface with an appropriate polish. 2. The pseudo-stone according to claim 1 for utility model registration, in which the solid shape is a mold of natural stone. 3. The pseudostone according to claim 1, wherein the carbon particles in the colored layer are composed of oil smoke.