JPH10192554A - Colored artificial sand for sand yard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide colored aritificial sand which achieves a culturally and educationally higher value along with availability of repeated play by sieving sands as colorful artificial sand playing device for infants such as kindergarten children to separate the sands of the same color in terms of color while allowing simultaneous use of a plurality of colors. SOLUTION: Particles within a fixed particle size range are colored in the same color and other particles within different particle size ranges are colored in more than one color not mutually overlapping to produce colorfully colored artificial sands. The sands of the same color are separated in terms of color by sieving on demand. This enables repeated playing, for example, modelling and drawing simultaneously using sands in a plurality of colors.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a colored artificial sand for a sandbox as a completely new and colorful playground equipment which can be used by kindergarten infants and the like and which has high cultural and educational value.

[0002]

2. Description of the Related Art Conventionally, most sands in sandboxes installed in kindergartens use natural sand as it is, and there is no sandbox using colored artificial sand. There was no concept of using colored artificial sand, which can repeatedly use sand, as a playground equipment in a sandbox.

[0003]

On the other hand, according to the present invention, a novel idea is to use colored sands of two or more colors at the same time and to repeatedly use them. The purpose of the present invention is to provide a colorful sandbox colored artificial sand that is highly cultural, educational and hygienic and can be used as a tabletop sandbox.

[0004]

According to the present invention, particles having a certain particle size range are colored in the same color, and two or more kinds of different colors falling in different particle size ranges which do not overlap each other for each color. Characterized in that sand of the same color is color-coded at any time by sieving so that the user can play repeatedly with a plurality of colors at the same time.

[0005]

According to the present invention, two or more different colored sands are used,
Not only the unique color of sand of various colors, but also various colors of the mixed state of various proportions of colored sand can be used, so not only sand as modeling material but also a coloring effect on modeling Provide highly educational and cultural new play equipment that can fully demonstrate the creativity of young children, capable of new colorful forms and free coloring. Furthermore, the important point is that not only can the color of the colored sand be mixed and separated and restored freely by using a sieve during play, but also redraw the drawing with colored sand,
The remodeling can be arbitrarily performed, and even after the play is finished, sand of different colors can be color-coded by sieving to easily restore the initial state.

Further, according to the present invention, colored sand can be filled inside by using auxiliary toys such as trees, buildings, bridges and automobiles together, or simply placing thin transparent plastic containers or the like having the external shape in a sandbox. If this is the case, a new kind of play in a miniature garden is also possible, and a variety of play plans and applications are possible, such as playing gold hunting for infants by mixing in golden sand.

[0007] The colored artificial sand for a sandbox of the present invention can be most easily realized by the ceramic artificial sand obtained by crushing and sieving a fired porcelain body, as shown in Example 1 below. It would also be possible to classify the sand into particles and create artificial sand colored and coated with a paint of a different color for each particle size range, or colored artificial sand with metal particles as the core. These colored sands should also be color-separated by sieving after mixing different colors.

The colored artificial sand of the present invention can be optionally washed with water and can be used in combination with an antibacterial agent, so that it is modern, sanitary, and extremely suitable as a playground equipment for kindergartens and the like which can be played by a large number of people. Thus, it has the potential for widespread use and is also a significant new manufacturing industry.

Hereinafter, the present invention will be described in more detail with reference to simple examples, but the present invention is not limited thereto.

[0010]

Example 1 A low-temperature fired porcelain clay compacted at about 900 ° C. comprising high-purity kaolin and limestone fine powder,
About 4 wt% of inorganic pigments such as blue, yellow, green and red are mixed, and pressing, crushing and sieving are repeated to form sandy particles having different particle diameter ranges, respectively, at 900 ° C.
Firing for one hour gave several bright colored sands. Each particle of this colored sand has some sharp corners, so put it in a ball mill, add water only without using cobblestones (balls), rotate the mill, and wear the colored sands together to reduce the corners of the sand particles. After slightly rounding, it was washed with water and dried. These colored sands
Each was sieved again to obtain colored sands of different colors having different particle size ranges as shown in Table 1. These are beautifully colored artificial sands with almost the same specific gravity and the same weight feel as natural sand.
In addition, even if they are mixed with each other, they can be easily separated into colored sands of each color by sieving.

[0011]

[0012]

As described above, most sands used in sandboxes installed in kindergartens and the like use natural sands as they are, and no sandboxes using colored artificial sand have been found.
Although there was no concept of using colored sand that effectively utilizes sand particles of more than one kind as playground equipment, the present invention uses a new idea to simultaneously use various colored sands, and to be able to use them repeatedly. It is very suitable as a playground equipment or educational material for kindergarten etc. that can be played by a large number of people because it is also healthy and hygienic, and it has created a completely new material with high cultural and educational value, and therefore new production of materials and equipment Industry is started.

Claims (1)

[Claims] Claims: 1. A method comprising: coloring particles within a certain particle size range in the same color; two or more colored sands of different colors falling into different particle size ranges that do not overlap each other for each color; Colored artificial sand for sandboxes in which sand of the same color is color-coded at any time and can be played repeatedly with multiple colors at the same time.