JP2009058823A - Inorganic-base clay for model creation, and method for manufacturing model - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a material from which a model can be easily and rapidly prepared. <P>SOLUTION: The inorganic-base clay characterized by containing inorganic powder (A), an organic gelatinizing agent (B), and water (C) is used. The inorganic powder (A) is preferably at least one kind selected from the group consisting of silica sand, mountain sand, sea sand, feldspar, pottery stone, talc, calcium carbonate, potsherd, and chamotte. The organic gelatinizing agent (B) is preferably a natural high polymer. Based on the weights of (B) and (C), the content of (A) is preferably 63 to 77 wt.%, the content of (B) 2.5 to 7 wt.%, and the content of (C) 20 to 33 wt.%. Also, the method for manufacturing the model including a molding step of preparing the molded body by molding with the inorganic clay, and a curing step of solidifying the model by removing water from the molded body is used. The curing step is preferably a step of solidifying the inorganic clay by heating and removing the water from the molded body by using a heater for household use. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a model-producing inorganic clay and a model manufacturing method.

  Oil clay (inorganic clay), paper clay, and the like are used as clay for creating a model.

However, when oil clay (inorganic clay) or paper clay is used, there is a problem that it takes a long time to harden the clay. There is also a problem that the clay shrinks while the clay is hardened (usually shrinks around 5%).
That is, the objective of this invention is providing the material which can prepare a model simply and in a short time.

The feature of the inorganic clay for model creation of the present invention is that it contains an inorganic powder (A), an organic gelling agent (B), and water (C).
In the inorganic clay for model creation of the present invention, the inorganic powder (A) is at least one selected from the group consisting of quartz sand, river sand, mountain sand, sea sand, feldspar, porcelain stone, talc, calcium carbonate, cerbene and chamotte. It is preferable.
In the inorganic clay for model creation of the present invention, the organic gelling agent (B) is preferably a natural polymer.
The inorganic clay for making a model of the present invention has an inorganic powder (A) content of 63 to 77% by weight based on the weight of the inorganic powder (A), the organic gelling agent (B) and water (C). The gelling agent (B) content is preferably 2.5 to 7% by weight, and the water (C) content is preferably 20 to 32% by weight.

The characteristics of the manufacturing method of the model of the present invention are a molding step of preparing a molded body by molding with the above inorganic clay,
The gist is that it includes a curing step of removing water from the molded body to harden the inorganic clay.
In the model manufacturing method of the present invention, it is preferable that the curing step is a step of solidifying the inorganic clay by removing water from the molded body by heating using a household heater.

The inorganic clay for model creation of the present invention can prepare a model easily and in a short time. That is, since it does not contain a solvent that is difficult to remove like oil clay (inorganic clay), the clay can be hardened in a short time.
Moreover, since the inorganic clay for model creation of this invention does not contain a material with high affinity with a solvent like paper clay, clay can be hardened in a short time.
In addition, the inorganic clay for making a model of the present invention does not have a problem that the clay shrinks greatly while the clay is being hardened, so that an accurate model can be created.

The model manufacturing method of the present invention includes a process of preparing a molded body by molding with the above-described inorganic clay for model creation, and a curing process of removing water from the molded body and solidifying the inorganic clay, so that it is simple and short. A model can be prepared in time.
In addition, the model manufacturing method of the present invention can harden inorganic clay by heating and removing water from a molded body using a household heater, so that a model can be prepared easily and in a short time even for non-experts. it can.

  As inorganic powder (A), any inorganic powder can be used without limitation. Silica sand, river sand, mountain sand, sea sand, feldspar, porcelain stone, talc, calcium carbonate, cerven, chamotte, silica, alumina, titanium oxide, graphite , Mica and mixtures thereof. Among these, at least one selected from the group consisting of quartz sand, river sand, mountain sand, sea sand, feldspar, porcelain stone, talc, calcium carbonate, cerbene and chamotte is preferred, and more preferred is quartz sand, river sand, mountain sand, sea At least one selected from the group consisting of sand, feldspar, porcelain stone, cerven and chamotte, particularly preferably silica sand.

  The weight average particle diameter (μm) of the inorganic powder (A) is preferably 60 to 280, more preferably 70 to 270, particularly preferably 80 to 260, and most preferably 90 to 250. Within this range, the hand of the model to be prepared is further improved, it is easier to color, and the strength is further improved. When the value exceeds the above range, the prepared model tends to be unsatisfactory and the colorability tends to be poor. On the other hand, when the value is less than the above range, the prepared model tends to be brittle.

  In addition, the weight average particle diameter is obtained by measuring the particle size distribution of the measurement sample, and the logarithmic probability paper {horizontal axis: particle diameter, vertical axis: cumulative content (% by weight)} shows the relationship between the cumulative content and the particle diameter. It is obtained by plotting and determining the particle size corresponding to a cumulative content of 50% by weight. The particle size distribution is measured in accordance with JIS Z8815-1994. For example, sieves with an inner diameter of 150 mm and a depth of 45 mm {openings: 300 μm, 250 μm, 180 μm, 90 μm and 45 μm} are used with a narrow opening sieve. Overlay, put 50g of measurement sample on top of sieve with widest opening, sieve for 10 minutes with sieve vibrator, measure the weight of measurement sample remaining on each sieve, first measurement sample Measured by determining the weight percent of the measurement sample remaining on each sieve based on the weight of each.

  The content (% by weight) of the inorganic powder (A) is preferably 63 to 77, more preferably 65 to 75, based on the weight of the inorganic powder (A), the organic gelling agent (B), and water (C). Especially preferably, it is 69-74. Within this range, the model can be prepared more easily and in a short time.

Examples of the organic gelling agent (B) include natural polymers, semi-synthetic polymers, and synthetic polymers.
As natural polymers, polysaccharides and proteins can be used.
Examples of the polysaccharide include glucan, starch, mannan, agar (agaro-oligosaccharide), sodium alginate, troolloi, dextran, and pullulan.
Examples of proteins include glue, gelatin, casein, and collagen.

As the semi-synthetic polymer, those derived from cellulose and those derived from starch can be used.
Examples of those derived from cellulose include methyl cellulose (MC), hydroxypropyl methyl cellulose (HPMC), hydroxypropyl cellulose (HPC), hydroxyethyl cellulose (HEC), and carboxymethyl cellulose (CMC).
Examples of those derived from starch include acid value starch, esterified starch, etherified starch, cross-linked starch, cationized starch and dextrin.

  Synthetic polymers include sodium polyacrylate, ammonium polyacrylate, polysodium methacrylate, ammonium polymethacrylate, polyvinyl alcohol (PVA), polyethylene oxide (PEO), polyvinyl pyrrolidone, polyacrylamide and other synthetic polymers (for example, And SN thickener series manufactured by San Nopco Co., Ltd.).

As the organic gelling agent (B), a mixture of two or more kinds may be used.
Of these, natural polymers and semi-synthetic polymers are preferable from the viewpoint of preparing a model easily and in a short time, more preferably natural polymers, particularly preferably polysaccharides, most preferably glucan and sodium aspartate. is there.

  The content (% by weight) of the organic gelling agent (B) is preferably 2.5 to 7, more preferably based on the weight of the inorganic powder (A), the organic gelling agent (B) and water (C). Is 3 to 6, particularly preferably 3.4 to 5. Within this range, the model can be prepared more easily and in a short time.

  The water (C) is not particularly limited, and distilled water, ion exchange water, tap water, industrial water, well water, water for spraying, river water, rain water, and the like can be used. Of these, distilled water, ion exchange water, tap water, and industrial water are preferable, and tap water is more preferable.

  The content (% by weight) of water (C) is preferably 20 to 32, more preferably 22 to 30, based on the weight of the inorganic powder (A), the organic gelling agent (B) and the water (C). Most preferably, it is 22-27.6. Within this range, the model can be prepared more easily and in a short time.

The water (C) may contain a polyol (D) or the like. When the polyol (D) is contained, sliding of the inorganic clay and the like are further improved. Moreover, content of an organic gelling agent (B) can be reduced.
Examples of the polyol (D) include polyhydric alcohols that are almost unlimitedly soluble in water, and examples include glycerin, diglycerin, tetraglycerin, ethylene glycol, diethylene glycol, propylene glycol, sorbitol, and sucrose.
When the polyol (D) is contained, the content (% by weight) of the polyol (D) is preferably 1 to 40, more preferably 2 to 30, particularly preferably 3 to 3, based on the weight of water (C). 25. Within this range, the model can be prepared more easily and in a short time.

The inorganic clay for model creation of the present invention may further contain another additive (E).
Other additives (E) include preservatives, fungicides, bactericides, moisturizers, water retention agents, leveling agents, antioxidants, UV absorbers, foam inhibitors, pigments, dyes, dispersants, fragrances, Pulp fiber powder and synthetic resin filler are included. However, it is preferable that the pulp fiber powder and the synthetic resin filler are not included because the inorganic clay slips easily.
Moreover, as other additive (E), what is recognized as a food additive is preferable.

  Preservatives, fungicides, bactericides, moisturizers, water retention agents, leveling agents, antioxidants, UV absorbers, foam inhibitors, pigments, dyes, dispersants and / or fragrances (% By weight) is preferably 0.001 to 0.1, more preferably 0.01 to 0, based on the weight of the inorganic powder (A), the organic gelling agent (B), and water (C), respectively. .06. Within this range, the effect of each additive can be exhibited.

  When the pulp fiber powder is contained, the content (% by weight) is preferably 0.5 to 10, based on the weight of the inorganic powder (A), the organic gelling agent (B), and water (C). Preferably it is 0.1-3.

  The inorganic clay for model creation of the present invention is a uniform mixture of inorganic powder (A), organic gelling agent (B) and water (C), and if necessary, polyol (D) and / or other additives (E). If it does, there is no restriction in the manufacturing method. However, after (1) organic gelling agent (B) and a part or all of water (C) are uniformly mixed, inorganic powder (A) and, if necessary, polyol (D) and / or other additives (E ), And uniformly mixed, or (2) inorganic powder (A), organic gelling agent (B) and water (C), and, if necessary, polyol (D) and / or other additions It is preferable to uniformly mix the agent (E) at once.

  The inorganic clay for model creation of the present invention can be used as clay for arts and crafts, clay for teaching materials, clay for model creation, and the like. Among these, it is suitable as a clay for making a model, and is particularly suitable as a clay for creating a model of limbs of infants and animals (such as pets, zoo animals and fish).

  As a method for producing a model using the inorganic clay for model creation of the present invention, a molding process for preparing a molded body by molding with the above inorganic clay and a curing process for solidifying the inorganic clay by removing water from the molded body Are preferably included.

In the molding process, molding may be performed by hand, or may be performed using a tool (such as a spatula, a rod, a plate, a nail, or a cookie making mold) or a machine (such as a molding machine). Also, in the molding process, infants and animals (pets, zoo animals and fish, etc.) limbs, etc. or prototypes of articles etc. are pressed against inorganic clay, or inorganic clay is applied to infants and animals (pets, zoo animals and fish, etc.) ) Or the like, or by pressing against a prototype of an article or the like, and forming a depression in the inorganic clay.
Even if the molding fails, the molding can be performed again by kneading the inorganic clay again {hand kneading, mechanical kneading (kneading)}.

  In the curing process in which water is removed from the molded body and the inorganic clay is hardened, there is no limitation on the means for removing water as long as the water can be removed, including hot plate drying (including drying using a domestic hot plate, frying pan, etc.) , Natural drying (including sun drying), blow drying (including drying with household dryers), warm air drying (including drying with smooth air dryers, household dryers, etc.), oven drying (home ovens, etc.) ), Far-infrared heat drying, and microwave heat drying (including microwave oven drying).

  Among these methods for removing water, it is preferable to heat and remove water from a molded body using a household heater from the viewpoint that a model can be easily prepared in a short time, such as a domestic hot plate or a frying pan. Drying by means of, drying by sunlight, drying by a household dryer, drying by a household oven, drying by a microwave oven or the like is preferable. More preferably, the drying is performed using a hot plate for home use or a frying pan.

  When removing water, the temperature of the molded body preferably does not exceed 300 ° C. (preferably 200 ° C., more preferably 150 ° C., particularly preferably 100 ° C., most preferably 90 ° C.). Moreover, it is preferable not to become local heating. In particular, in the case of hot plate drying, local heating is likely to occur, so the molded body is frequently moved, the molded body is placed on a cushion (such as an aluminum foil with wrinkles) and heated, or low temperature ( Heating with low heat is preferable.

The model manufacturing method may further include a step of obtaining a colored model by coloring the model with a colorant. In order to color the model, a coloring agent (pigment, dye, etc.) may be contained in the inorganic clay in advance, but it is preferable to color the model after the inorganic clay is hardened.
Examples of the colorant include known colorants (such as paints and paints).
As a method for coloring the model, brush coating, spray coating, dip coating, roller coating, roll coater, flow coater coating and the like can be applied.

  The completed model or colored model may be used as a figurine or a toy as it is, but it can be stored in a picture frame with a photo or a memorable item. In order to put it in a picture frame (photo frame), it is possible to put it in a picture frame (photo frame) after pasting a model or a colored model on cardboard, a wooden board or a plastic board.

Hereinafter, unless otherwise specified, “part” means “part by weight” and “%” means “% by weight”.
<Example 1>
2.8 parts of gelling agent (b1) {curdlan; polysaccharide manufactured by Takeda Kirin Foods Co., Ltd .; linear glucan in which glucose is β-1,3-glycosidically bonded}, gelling agent (b2) {Marporose ace ; Methylcellulose manufactured by Matsumoto Yushi Seiyaku Co., Ltd. and "Marporose" are registered trademarks of the company. } 0.7 parts, water (c1) {tap water} 27.6 parts and preservative {bronopol; 2-bromo-2-nitro-1,3-propanediol} manufactured by Chemicrea Co., Ltd. 0.06 parts uniformly Then, after preparing the gelling agent aqueous solution, the gelling agent aqueous solution and the inorganic powder (a1) {silica sand No. 8; Silica sand manufactured by Kita Nippon Sangyo Co., Ltd., weight average particle diameter 93 μm} 69 parts are uniformly mixed. An inorganic clay (1) for making a model of the invention was obtained.

<Example 2>
A gelling agent aqueous solution was prepared by uniformly mixing 3 parts of a gelling agent (b1), 2 parts of a gelling agent (b2), 22 parts of water (c1) and 0.03 part of a preservative to prepare an aqueous gelling agent solution. And inorganic powder (a2) {Serbene S-3; Selben, manufactured by Kanezu Kogyo Co., Ltd., 74 parts by weight average particle size 250 μm} were uniformly mixed to obtain an inorganic clay (2) for making a model of the present invention.

<Example 3>
Except having changed "gelling agent (b1)" into "gelling agent (b3) {sodium alginate}", it carried out similarly to Example 1, and obtained the inorganic clay (3) for model creation of this invention. .

<Example 4>
Except that “gelling agent (b1)” and “gelling agent (b2)” were changed to “gelling agent (b2)”, in the same manner as in Example 2, the inorganic clay for model creation of the present invention ( 4) was obtained.

<Example 5>
Except for changing “inorganic powder (a1) 69 parts” to “inorganic powder (a1) 55 parts” and “inorganic powder (a2) 14 parts”, in the same manner as in Example 1, for making a model of the present invention Inorganic clay (5) was obtained.

<Preparation of model>
(1) After forming approximately 200 g of each of the inorganic clays (1) to (5) obtained in Examples 1 to 5 to a size of about 30 mm × 140 mm × 30 mm, the letters “Seiko Co., Ltd.” are formed on the surface of 14 mm × 100 mm. The letter face of the plastic stamp (prototype), which is horizontally written in the Mincho style (letter size: 14 mm x 14 mm), is inserted into the inorganic clay at a depth of about 1 cm and molded. ) To (5) were prepared.
A frying pan (diameter 26 cm) heated to about 100 ° C. with an electromagnetic cooker (made by Matsushita Electric Industrial Co., Ltd.) is crumpled with an aluminum foil of about 60 cm, and the molded body is placed on the aluminum foil for about 10 minutes. The inorganic clay was hardened by removing water while heating, and then cooled to about 25 ° C. to obtain models (1) to (5).
In the models (1) to (5), the characters “Seido Co., Ltd.” can be clearly expressed, and the size also matches the original model.

(2) A molded body (H1) was prepared in the same manner as described above using commercially available paper clay {Kaminendo; Kutuwa Co., Ltd.}. The molded body (H1) was left in a room at about 24 to 30 ° C. for 7 days to obtain a comparative model (H1).
The model (H1) could not represent most of the portions surrounded by the three lines and some of the portions surrounded by the two lines in the characters “Seido Co., Ltd.”. In addition, the size of the character face was about 13.5 mm × 95 mm, and the size was reduced to about 95% of the original size.

(3) A molded body (H2) was prepared in the same manner as described above using a commercially available oil clay {ABRUNENDO; KUTSUWA CORPORATION}. The molded body (H2) was left in a room at about 24 to 30 ° C. for 14 days to obtain a comparative model (H2).
In the model (H2), the characters “Seido Co., Ltd.” could be clearly expressed, but the size of the character surface was about 13.5 mm × 95 mm, which was reduced to about 95% of the original size.

<Preparation of foot shape>
About 200 g of the inorganic clay (1) obtained in Example 1 was formed into a diameter of 140 mm and a thickness of about 30 mm, and then the foot of an infant (8 months old) slightly occupied with a wet towel was inorganic at a depth of about 1 cm. It was inserted into clay and molded to prepare a molded body (6).
A frying pan (diameter 26 cm) heated to about 100 ° C. with an electromagnetic cooker (manufactured by Matsushita Electric Co., Ltd.) is crumpled with about 60 cm aluminum foil, and the molded body (6) is placed on the aluminum foil. The inorganic clay was hardened by removing water while heating for about 10 minutes, and then cooled to about 25 ° C. to obtain a model (6).
A model (6) was attached to an easel together with a photograph or the like to prepare a fresh photograph (see FIG. 1).
When the inorganic clay of the present invention was used, not only the shape of the foot but also the size could be accurately reproduced.

In an Example, it is the photograph which image | photographed the photo frame which affixed the infant foot model with the photograph to the easel.

Claims (6)

An inorganic clay for modeling, comprising an inorganic powder (A), an organic gelling agent (B), and water (C). The inorganic clay according to claim 1, wherein the inorganic powder (A) is at least one selected from the group consisting of quartz sand, river sand, mountain sand, sea sand, feldspar, porcelain stone, talc, calcium carbonate, cerbene and chamotte. The inorganic clay according to claim 1 or 2, wherein the organic gelling agent (B) is a natural polymer. Based on the weight of the inorganic powder (A), the organic gelling agent (B), and water (C), the content of the inorganic powder (A) is 63 to 77% by weight, and the content of the organic gelling agent (B) is The inorganic clay according to any one of claims 1 to 3, which has a content of 2.5 to 7% by weight and water (C) of 20 to 32% by weight. A molding process for preparing a molded body by molding with the inorganic clay according to any one of claims 1 to 4,
And a curing step of removing water from the molded body to harden the inorganic clay. The manufacturing method according to claim 5, wherein the curing step is a step of heating and removing water from the molded body using a household heater to solidify the inorganic clay.