JPH0574480B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a sand painting material made of sand-like fine particles in which a layer of a new finely powdered hydrophilic binder is laminated on a colored surface, and a sand painting material comprising this sand painting material. This paper relates to a three-dimensional sand painting produced using the method and its production method.

<Conventional technology> Traditionally, the technique of sand painting involves applying liquid adhesive or adhesive such as solution type or emulsion type to a brush or the like on a base plate such as board or plywood, and then applying desired letters, pictures, patterns ( The method used is to draw a pattern (hereinafter abbreviated as a pattern) and then sprinkle colored sand-like powder on top of it to represent the pattern.

In addition, these methods only adhere to the sand that is in direct contact with the adhesive on the baseboard, so there are drawbacks such as not creating a sense of unevenness or movement. Sand that does not come into direct contact with the adhesive on the base plate, a method to supplement the adhesion between sand and the base plate,
Furthermore, improved methods have been disclosed, such as a method in which a sand picture is drawn using sand treated with an organic binder, and the sand picture is treated with water vapor to fix it (Japanese Patent Application Laid-open No. 58577-1983).

The sand paintings obtained by these methods are generally two-dimensional, and are not intended to essentially obtain three-dimensional sand paintings. A method of producing something similar to a three-dimensional painting is to place pieces of stone or similar objects on the surface of a plate-like piece so as to form a picture plane.
Glue is used to express rocks and other objects, and sand, crushed stone, or a mixture thereof is pasted with glue, or glue is kneaded and pasted to form sand or crushed stone parts, and sand or crushed stone parts are formed. A method of forming a somewhat three-dimensional picture of a mountain, a standing tree, or other object, and applying oil paint or other paint to the surface of stone chips, sand, crushed stone, and other parts, or a synthetic resin emulsion. A method of drawing a picture on a screen such as paper using paints of various colors mixed with coloring agents, foaming agents, etc., and heating and foaming them after drying (Japanese Patent Laid-Open No. 51-92220, Japanese Patent Laid-Open No. 53-1989)
145737), and there is no disclosure regarding full-scale three-dimensional sand paintings.

<Problems to be solved by the invention> As mentioned above, the traditional sand painting technique
If you are trying to create a more three-dimensional sand painting rather than just a flat sand painting, you can apply an appropriate adhesive using a traditional technique on top of the sand painting created using the traditional sand painting technique. It is possible to obtain a three-dimensional sand painting by sprinkling colored sand-like fine particles and repeating this process a predetermined number of times. Therefore, it is not possible to obtain a three-dimensional sand painting.

Furthermore, a method has been disclosed in which a sand picture is produced using sand treated with an organic binder and treated with water vapor to fix it (Japanese Patent Application Laid-open No. 58577-1983). This method uses sand treated with an aqueous solution of this polymer, and the binder layer that is formed on the surface of the sand obtained by this treatment is thin, and this binder layer is applied to the areas where the three-dimensional expression of the sand painting is intended. Even if you try to create a full-fledged three-dimensional sand painting by layering and mounding the treated sand into a desired three-dimensional shape, the bonds between sand particles in the layered and heaped part are weak, and it is extremely difficult to maintain the three-dimensional expression. It is insufficient, cannot withstand even weak impacts, is extremely unsatisfactory in terms of shape retention, and has major practical drawbacks.

Overcoming the above-mentioned drawbacks in order to obtain authentic three-dimensional sand paintings is a major challenge in the prior art.
The emergence of new sand painting materials for this purpose has been eagerly awaited.

<Means for Solving the Problems> As a result of intensive studies in view of the above situation, the present inventors have developed a sand-like structure in which a layer of a finely powdered hydrophilic binder is laminated on the surface of a colored sand-like fine substance. We have discovered that fine particles are suitable as sand painting materials, and in particular, are extremely suitable as three-dimensional sand painting materials.We have overcome the aforementioned problems with the prior art by using these fine particles, and have created full-fledged three-dimensional sand paintings with extremely simple operations. I got a sand painting. That is, the present inventors moistened crushed materials such as colored silica sand, marble, and kansui stone, clay minerals such as kaolin and bentonite, and fibrous fine pieces such as zeolite, wood powder, and pulp powder with a predetermined amount of water. A sand painting material made of colored sand-like fine particles obtained by applying a hydrophilic binder in the form of a fine powder or fine granules to the surface of these crushed objects or fine pieces in a wet state in the form of sprinkling and drying is used. By doing so, it is possible to maintain the bonding force between the fine sand particles that is sufficient to maintain the three-dimensional expression of a full-scale three-dimensional sand painting, and furthermore, the fine sand particles have excellent water permeability. , and found that sufficient bonding force is developed between the particles by wetting by water penetration and subsequent drying, thereby completing the present invention and successfully solving the problems of the prior art.

The present invention is, first of all, a sand painting material made of sand-like fine particles, on the surface of which a colored layer and a layer of a finely divided hydrophilic binder are laminated, and the finely divided binder layer is the outermost layer. Second, a layer of a finely powdered hydrophilic binder is laminated on the surface of colored sand-like particles to form a ridge bonding layer of a sand painting material made of sand-like particles into a desired three-dimensional shape. It is a three-dimensional sand painting. Furthermore, thirdly, when producing a sand painting by scattering and fixing colored sand-like fine particles on the design part of the surface of the base plate, the colored sand-like fine particles are applied to the part intended for three-dimensional expression of the sand picture. A layer of finely powdered hydrophilic binder is layered on the surface of an object to build up sand-like fine particles.
This method of producing a three-dimensional sand painting is characterized by forming a desired three-dimensional shape, allowing water to penetrate through the surface of the three-dimensional shape, and then drying.

The sand painting used in the present invention (the sand painting referred to in the present invention includes not only those using inorganic sand-like materials but also sand painting analogues that use other fine materials and have a sand painting appearance) The sand-like fine substances used include crushed silica sand, marble, kansui stone, etc., ceramic beads or their crushed substances, glass beads or their crushed substances, clay minerals such as kaolin and bentonite, and porous fine pieces such as pearlite and zeolite. In addition to inorganic materials such as wood flour, pulp powder, plastic beads or their crushed materials, powders of these materials are usually used with or without fine cores. Granules granulated by the method described above are preferably used.

The above-mentioned colored product of sand-like fine particles can be obtained by coloring by a conventional method, but for example, a method of mixing, stirring, and drying an aqueous dispersion of an acrylic emulsion, a binder such as methyl cellulose, a pigment, etc. with sand-like fine particles, etc. taken. Depending on the desired color and tone, sand-like fine particles that are uniformly colored with a smaller amount of pigment can be obtained by moistening the fine particles with water and then adding uniformly mixed inorganic fillers, binders, pigments, etc. It is obtained by attaching it to the surface of a piece and then drying it. This method uses substances that get wet with water, hydrophilic substances that retain water, and substances that do not belong to the category of so-called hydrophilic substances, but because they are wet with water and are microporous, they absorb and retain water. Suitable for use in fine particles.

The colored sand-like fine material of the present invention whose outermost layer is formed of a finely powdered hydrophilic binder refers to the colored sand-like fine material in which the colored sand-like fine material is wetted with water by the method described above, and then
It is obtained by adhering it to wet fine particles in the form of sprinkling and drying. The fine particles moistened with an appropriate amount of water are then added and adhered to the surface of the fine particles in a sprinkling manner, and the wet fine particles are bonded to the surface of the wet fine particles while receiving and receiving moisture between them and the hydrophilic binder in the form of a fine powder. A layer of finely powdered binder is formed. By properly maintaining the relative relationship between the water retention capacity of colored sand-like fine particles when wetted and the amount of water used for wetting, the binder does not become muddy.
Furthermore, it is possible to obtain sand-like fine particles that can enjoy the effects of the present invention by eliminating incomplete adhesion on the surface due to insufficient amount of wetting water.

The amount of water used to moisten colored sandy fines is selected depending on the degree of water retention of the fines, and is not determined unambiguously, but is usually 100% of the fines.
It is selected from a range of 0.1 to 300 parts by weight, more preferably from a range of 0.4 to 200 parts by weight.
For example, for colored fine materials such as kansui stone and silica sand, which have a small amount of water retention, the amount of water used per 100 parts by weight of fine materials is
It is preferably 0.4 to 14 parts by weight, more preferably 1 to 6 parts by weight. For plastic beads or crushed materials, the amount is preferably 1.5 to 30 parts by weight, more preferably 3 to 16 parts by weight, and for materials that are hydrophilic and have a large water holding capacity such as wood flour, 30 to 200 parts by weight. Preferably 40
~140 parts by weight is more preferred.

In addition, if the water content of the colored sand-like fine particles in an undried, wet state after coloring the fine particles is in a suitable range, subsequent to this coloring operation, the fine powdery hydrophilic binder may be added to the fine powder. A layer forming operation can be performed.

Hydrophilic binders used in the present invention include binders that have the property of swelling or dissolving in water, causing adhesion between fine particles in the presence of water, and fixing fine particles after drying, such as methyl cellulose. , hydroxyethyl cellulose, carboxymethyl cellulose, sodium alginate, solubilized starch, polyvinyl alcohol, sodium polyacrylate, and the like are preferably used. Among others, methylcellulose,
Hydroxyethyl cellulose and carboxymethyl cellulose are more preferred. The reason for this is that the binder layer exhibits excellent water permeability and viscosity when water permeates, and due to the development of viscosity, the part where fine objects are layered in a three-dimensional shape is fixed and the shape This is because it is relatively strongly stabilized, and also has fluidity that allows it to be easily modified and shaped. Therefore, it becomes possible to obtain a precise three-dimensional sand painting even more easily.

The amount of the hydrophilic binder used in the present invention is determined by the properties related to the surface area per unit weight, such as the density and porosity of the colored sandy fines, and although it is not unambiguously determined, the amount of the colored sandy fines ( dry weight standard) 100
0.1 to 35 parts by weight per part by weight is preferably used, for example, in the case of crushed cold water, 0.2 to 35 parts by weight per 100 parts by weight.
4 parts by weight is preferable, and 0.6 to 2.4 parts by weight is more preferable, and when wood flour pulp powder with a lower density is used as the sand-like fine material, it is 6 to 2 parts by weight per 100 parts by weight.
30 parts by weight is preferred, and 10 to 24 parts by weight is more preferred.

If the amount of hydrophilic binder is too small, not only will the adhesive force between the particles of sand-like particles required for full-scale three-dimensional sand paintings be insufficient, but also the viscosity that develops as water penetrates. The morphological stability and ease of modification of the shape during the undried state cannot be expected, making it impossible to obtain a precise three-dimensional sand painting, which is not preferable. Furthermore, if the amount of the hydrophilic binder is too large, not only will water permeability deteriorate, but also the surface will become rough during the drying process, which is not aesthetically pleasing and requires unnecessary time for drying.

The three-dimensional sand painting of the present invention is characterized by using colored sand-like fine particles whose outermost layer is made of a finely powdered hydrophilic binder, and whose outermost layer is made of this finely powdered binder. Due to this, the layer is thick, so in the area where three-dimensional expression is intended, sand-like fine particles are piled up to a sufficient height to create the desired three-dimensional shape, and water is allowed to penetrate through the surface to allow the fine particles to interact with each other. By adhering the particles and then drying them, it is possible to develop a strong bond between fine particles that can withstand practical use, and to obtain a full-fledged three-dimensional sand painting.

Furthermore, since this binder layer is formed by sprinkling fine powder binder, water permeability is extremely good. Even with the simple operation of touching the surface, water permeates over a wide area.

In order to produce the three-dimensional sand painting of the present invention, the colored sand-like fine particles are sprinkled on the design portion of the surface of the base plate, and the colored sand-like fine particles are further layered and raised in the area where three-dimensional expression is intended. After bulging and forming the desired shape, touch the fine particles with a brush tip or the like that holds water from the surface to allow the water to penetrate, apply water with a dropper, etc., or spray water from a nozzle. This can be carried out by a simple operation of infiltrating water by a method such as the above, distributing the water throughout the colored sand-like fine particles in the three-dimensional part, and then drying.

As mentioned above, the sand painting material of the present invention has a relatively thick hydrophilic binder layer on the outermost layer, so that it can penetrate from the surface layer to the inside without using the pattern part on the surface of the base plate as an adhesive surface. Adhesion to the pattern part is ensured by the water that has reached the base plate and the binder on the surface layer of the fine sand particles. It is more preferable to pre-wet the pattern area with water, and when the area of the pattern area is large, from the viewpoint of preventing some parts from drying out when moistened with water, it is preferable to wet the pattern area with water.
It is more preferable to use an aqueous solution such as % carboxymethylcellulose.

When water resistance is required, synthetic resin emulsion or carboxymethyl cellulose is insolubilized in the water that permeates through the surface of the three-dimensional representation area formed of sand-like fine particles and in the water that moistens the pattern area on the base plate. By adding and using an agent [for example, epoxidized polyamide (manufactured by Showa Kobunshi Co., Ltd.), E-3149 (manufactured by Daido Kasei Kogyo Co., Ltd.]] or both of these,
Water resistance can be imparted to the sand painting obtained after drying.

When using a sand-like material treated with an organic binder obtained by a conventional method such as treatment with a water-soluble polymer aqueous solution, even if the production method of the present invention is adopted, excellent water penetration is not achieved. I can't expect sex,
Further, the binder layer is thin, and therefore, it is impossible to obtain a full-scale three-dimensional sand painting having a strong bond between fine particles that can withstand practical use, such as the one obtained by the present invention.

The sand painting material of the present invention is not only used for ordinary sand paintings, but also for example, by filling the gaps between double glass tops with sand-like substances colored in various colors so as to create a beautiful sand painting when viewed from the outside of the glass top. In recent years, these items have been used as decorative items, and this applies to these items as well. In other words, since the conventional sand-like particles filled in the decorative item remain filled and the spaces between the sand-like particles are not fixed, the sand painting has the disadvantage of being deformed by small vibrations, shocks, etc. .
By using the sand painting material of the present invention, water can be penetrated and dried as described above, and it is possible to easily fix between sand-like objects and between sand-like objects and glass tip walls. Sand paintings formed by filling and laminating such colored sand-like materials are also included in the scope of the present invention.

<Actions and Effects of the Invention> As mentioned above, the colored sand-like fine particles are wetted with an appropriate amount of water, and then the hydrophilic binder in the form of a fine powder attached to the surface of the fine particles is selectively added and sprinkled. The hydrophilic binder absorbs moisture and penetrates into the interior, giving and receiving moisture between the hydrophilic binders and adhesion between the surfaces of the fine particles.As a result, this binder layer becomes thick and the surface of the colored fine particles is bonded to each other. is formed. Due to the fine powder binder layer on the outermost surface layer, the water permeability of the part where the fine particles are piled up in the three-dimensional expression part of the sand painting formed by the sand-like fine particles obtained is extremely excellent. Due to the large thickness of this binder layer, a strong bond between fine particles, etc. that can withstand practical use is obtained, and an authentic, deeply carved, three-dimensional sand painting can be obtained with an extremely simple operation.

<Examples> Hereinafter, the present invention will be explained in detail with reference to Examples, but the present invention is not limited to these Examples. Note that parts are expressed on a weight basis.

Example 1 To 100 parts of dry No. 5 silica sand, 0.6 parts of acrylic emulsion (solid content 45%) and 1.4 parts of a pigment dispersion of phthalocyanine green with a nonionic surfactant were added, mixed and stirred, and dried at 185°C for 5 minutes for coloring. Obtained silica sand.

Next, the colored silica sand is mixed in a mixer with stirring blades.
After moistening the colored silica sand by spraying 2 parts of water with stirring, 1.2 parts of finely powdered carboxymethyl cellulose was added with stirring, and spread on the surface of the wet silica sand. It was dried for 15 minutes at a drying temperature of °C to obtain colored silica sand for sand painting, in which a layer of carboxymethyl cellulose was laminated on the outermost layer.

Using a plywood board as the base plate, apply a 1.5% aqueous solution of carboxymethyl cellulose to the pattern area, sprinkle the obtained colored silica sand on top of it, stack it up, and create a fish with a length of 15 cm, a width of 3 cm, and a height of 1 cm. One body was shaped, and a water-filled brush tip was brought into contact with several points on its surface to allow water to penetrate, causing adhesion between the silica sand particles and between the base plate and the silica sand. When water is allowed to permeate, viscosity develops and the shape is maintained after the water permeates.
The morphological stability due to this viscosity was extremely good, and after precise modification of the shape, a precise three-dimensional sand painting of a fish was obtained after natural drying. This three-dimensional sand painting had sufficient adhesion not only between the silica sand particles but also between the silica sand and the base plate, and had sufficient impact resistance for practical use.

Example 2 In Example 1, crushed Kansui stone with a particle size of 24 to 50 mesh was used to penetrate into the three-dimensional expression area formed by stacking the water to be applied on the base plate and the colored crushed Kansui stones. E-3149 instead of water
The same procedure as in Example 1 was carried out except that a 10-fold solution of (carboxymethyl cellulose insolubilizer manufactured by Daido Kasei Kogyo Co., Ltd.) in water was used. This had excellent permeability and viscosity development. The resulting detailed three-dimensional sand painting of a fish has sufficient adhesion between the Kansui stone crushed material and the crushed material and the base plate, and the three-dimensional representation of the sand painting can be seen on the floor from a height of 2 m by standing the base plate upright. It had impact resistance that could withstand impact even when dropped without direct contact. Furthermore, even when the sand painting was immersed in water, it did not lose its shape and had good water resistance.

Example 3 24 to 50 mesh of wood flour in a granulator with stirring blades
While stirring 100 parts, spray 150 parts of water to uniformly wet the wood flour. To the obtained wet wood flour, an inorganic filler consisting of 80 parts of talc, 40 parts of kaolin clay, 80 parts of light coal, and 40 parts of colored soil, and 10 parts of pigment (iron oxide, NYB-40, manufactured by Nippon Bengara Kogyo Co., Ltd.) , powder emulsion (Mobile DM-
200 (manufactured by Hoechst Synthesis Co., Ltd.) was mixed uniformly in advance, added while stirring, and allowed to adhere to the surface of the wet wood flour in a sprinkling manner. After this adhesion operation was completed, a granulation operation was carried out to obtain colored wet granules. Next, 20 parts of finely divided hydroxyethylcellulose powder was added to the wet granules with stirring, spread over the surface of the granules, and dried at a drying temperature of 100°C for 15 minutes to form the outermost layer of hydroxyethylcellulose. A colored granule for sand painting consisting of laminated layers was obtained.

Using the obtained colored granules, an elaborate three-dimensional sand painting of a fish was produced in the same manner as in Example 2. The permeability of water during this process of sand painting formation and the development of viscosity during water penetration, as well as the morphological stability and ease of shape modification resulting from the development of viscosity, are extremely excellent, and the sand painting obtained after drying is The impact resistance and water resistance of the sand painting were sufficient as in Example 2.

Example 4 The same procedure as in Example 2 was carried out, except that in Example 1, 14 to 24 mesh glass beads were used as the sand-like fines, disazo yellow was used as the pigment, and 2 parts of finely powdered carboxymethyl cellulose were used. .

When E-3149-containing water is permeated, the permeability of the water contained is extremely excellent, and after permeation, viscosity develops and the shape is maintained, and the morphological stability due to viscosity is extremely good. After that, a precise three-dimensional sand painting was obtained. The three-dimensional sand painting obtained had sufficient adhesion between the glass beads and the adhesion between the glass beads and the base plate, and had water resistance and impact resistance similar to those of Example 2.

Claims (1)

[Scope of Claims] 1. A colored sand-like fine material in which a colored layer and a layer of a finely powdered hydrophilic binder are laminated on the surface of the fine sand-like material, and the layer of the fine powder binder is the outermost layer. Naru sand painting materials. 2. The sand painting material according to claim 1, wherein the hydrophilic binder is carboxymethyl cellulose, methyl cellulose, or hydroxyethyl cellulose. 3. A three-dimensional sand painting made of a ridge bonding layer of a sand painting material made of sand-like fine particles in which a layer of a finely powdered hydrophilic binder is laminated on the surface of colored sand-like fine particles in a desired three-dimensional shape. 4. The three-dimensional sand painting according to claim 3, wherein the hydrophilic binder is carboxymethyl cellulose, methyl cellulose, or hydroxyethyl cellulose. 5. When producing a sand painting by scattering and fixing sand painting materials made of colored sand-like fine particles onto the design area of the base plate, the surface of the colored sand-like fine particles is applied to the part intended for three-dimensional expression of the sand painting. A sand painting material formed by stacking layers of a finely powdered hydrophilic binder is piled up to form a desired three-dimensional shape, water is permeated through the surface of the three-dimensional shape, and then dried. How to make three-dimensional sand paintings. 6. The method for producing a three-dimensional sand painting according to claim 5, wherein the hydrophilic binder is carboxymethyl cellulose, methyl cellulose, or hydroxyethyl cellulose.