KR20160055677A - Clay-like Composition and Preparing Method thereof - Google Patents

Abstract

The present invention relates to a clay-like composition and a method for producing the clay-like composition, and the clay-like composition is produced not only harmless to the human body but also edible. In addition, the clay-like compositions of the present invention provide excellent flexibility and moldability.

Description

Clay-like Composition and Preparing Method < RTI ID = 0.0 >

The present invention relates to a clay-like composition.

Generally, the clay used for handicrafts and the like can be modified into a desired shape in terms of flexibility and moldability, and the shape of the molding can be maintained for a long time after drying. However, in order to obtain the flexibility and moldability of the clay, the initial clay consisted of inorganic material and water. Accordingly, the clay itself was heavy, and the moisture quickly evaporated, causing problems such as moldability and surface cracking there was. In order to solve these problems, artificial clays made using water-soluble polymers and various additives have been distributed on the market. However, conventional clay using polyvinyl alcohol and the like lowered the rate of water evaporation to improve the surface cracking or formability somewhat, but as a product using chemical substances, it was still harmless to the human body and could not be regarded as a hygienic and environmentally friendly product.

Particularly, since infants have strong desire for taste, there is a concern that when they use clay as a playground, they may taste or eat, so that artificial clay which is harmless and sanitary to the human body is required.

Conventionally, in producing clay, artificial clay containing polyvinyl alcohol has been widely used (Korean Patent Laid-Open Publication No. 10-2013-0107402).

Numerous papers and patent documents are referenced and cited throughout this specification. The disclosures of the cited papers and patent documents are incorporated herein by reference in their entirety to better understand the state of the art to which the present invention pertains and the content of the present invention.

The present inventors have made efforts to produce a harmless and hygienic clay composition as a playground for infants and toddlers. As a result, the present invention has been accomplished by producing a clay-like composition that is harmless to the human body and improved in moldability compared to conventional clay when producing a clay-like composition using grain flour.

It is therefore an object of the present invention to provide clay-like compositions.

Another object of the present invention is to provide a method for producing a clay-like composition.

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention, claims and drawings.

According to one aspect of the present invention, (b) sodium chloride; (c) a gluten or gluten-substitution material; (d) a glycerin or glycerin-substitution material; And (e) water.

The present inventors have made efforts to produce a harmless and hygienic clay composition as a playground for infants and toddlers. As a result, when producing a clay-like composition using grain flour, a clay-like composition which is harmless to human body and improved in moldability compared to conventional clay was prepared.

The clay-like composition of the present invention comprises (a) grain flour; (b) sodium chloride; (c) a gluten or gluten-substitution material; (d) a glycerin or glycerin-substitution material; And (e) water as essential constituents.

The clay-like composition of the present invention provides an edible clay-like composition that can be edible by applying the main ingredient to a grain flour instead of a conventional clay.

According to one embodiment of the invention, the grain flour is one or more grain flour selected from the group consisting of rice flour, glutinous rice flour, barley flour, sorghum flour, corn flour, flour, rye flour, buckwheat flour, to be.

According to another embodiment of the present invention, the grain flour is one or more grain flour selected from the group consisting of rice flour, glutinous rice flour, barley flour, sorghum flour, corn flour, wheat flour, rye flour and buckwheat flour.

According to a particular embodiment of the invention, the grain flour is one or more grain flour selected from the group consisting of rice flour, glutinous rice flour, barley flour and millet flour.

The grain flour may be about 21 to 31 parts by weight, about 23 to 29 parts by weight, or about 25 to about 27 parts by weight, but is not limited thereto.

The clay-like composition of the present invention comprises sodium chloride. The sodium chloride serves to stabilize the gluten (or gluten-substitute) protein component of the clay-like composition and preserve the moisture in the clay-like composition.

About 2 to about 12 parts by weight, about 2 to about 8 parts by weight, about 2 to 6 parts by weight, about 4 to 12 parts by weight, about 6 to 12 parts by weight, about 9 to 12 parts by weight Part, or about 6 to 8 parts by weight, but is not limited thereto. When the clay-like composition of the present invention is prepared according to the salinity concentration, it may have an effect of preventing the microorganisms in the composition from propagating due to the high sodium chloride concentration. In addition, since the salt concentration is higher than that of food, infants can have an effect of preventing ingestion of the clay-like composition when used as a parasite for infants and children.

Clay-like compositions of the present invention include gluten or a gluten-substitute material. The gluten or gluten-substitute material is an additive material for controlling the viscosity of the clay-like composition.

According to one embodiment of the present invention, the gluten-substituting substance may be selected from the group consisting of xanthan gum, carrageenan, alginate, propylene glycol, propylene glycol alginate, HPMC (hydroxypropylmethylcellulose). < / RTI >

According to another embodiment of the present invention, the gluten-replacing substance is at least one substitute selected from the group consisting of ginseng, carrageenan, alginic acid, propylene glycol alginic acid and HPMC.

About 1 to about 8 parts by weight, about 1 to about 6 parts by weight, about 1 to about 4 parts by weight, about 3 to about 10 parts by weight, about 5 to about 10 parts by weight, and about 5 to about 10 parts by weight of the gluten or gluten- Or about 4 to 7 parts by weight, but is not limited thereto.

The clay-like compositions of the present invention include glycerin or glycerin long-substitute materials. The glycerin or glycerin-substitution material is an additive material for maintaining a certain salinity concentration of the clay-like composition. When sodium chloride and glycerin are dissolved in water to form a solution, the amount of sodium chloride is increased in proportion to the amount of glycerin.

According to one embodiment of the present invention, the glycerin-replacement material is at least one glycerin-substituent selected from the group consisting of hyaluronic acid, sorbitol and propylene glycol.

The glycerin or glycerin-substitution material may be about 5 to 15 parts by weight, about 7 to 13 parts by weight, or about 9 to 11 parts by weight, but is not limited thereto.

The clay-like composition of the present invention comprises water.

About 27 to about 33 parts, about 29 to about 31 parts, about 27 to about 35 parts, about 29 to about 35 parts, about 25 to about 33 parts, or about 27 to about 35 parts by weight of water, But is not limited thereto.

The clay-like composition of the present invention has an excellent moisture content.

According to one embodiment of the present invention, the moisture content is 5-30 wt%.

According to another embodiment of the present invention, the moisture content is 10-30% by weight, 13-30% by weight or 16-30% by weight.

The clay-like composition of the present invention may further include additives to improve the moldability, stability and moisture content of the clay-like composition.

According to one embodiment of the present invention, the clay-like composition further comprises at least one additive selected from the group consisting of stabilizers, fats and edible colorants.

The stabilizer additionally included in the clay-like composition of the present invention is for controlling the moisture content of the clay-like composition and performing the function of the stabilizer. As the amount of the stabilizer is increased, the content of moisture can be increased within a certain range . It is important that the present invention maintains a constant moisture content while containing a large amount of water in order to improve the moldability and prevent the hardening, drying and cracking of the clay-like composition. However, when a large amount of water in the clay composition is mixed with the grain powder during the manufacturing process, the kneading becomes complicated and the formability of the finished clay-like composition is lowered. Therefore, when a stabilizer is added to prevent this, the stabilizer absorbs moisture to prevent the shape of the grain powder from being broken, and has a function of forming the bean and shaping.

According to one embodiment of the present invention, the stabilizer is selected from the group consisting of guar gum, locust bean gum, tara gum, sodium carboxymethyl cellulose, and cellulose ethers. ≪ / RTI >

According to another embodiment of the present invention, the stabilizer is at least one stabilizer selected from the group consisting of guar gum, locust bean gum, tara gum and sodium carboxymethyl cellulose.

According to a particular embodiment of the invention, the stabilizer is guar gum.

The stabilizer is used to form an aqueous gel by mixing with water to accelerate gelation. The stabilizer is obtained by pulverizing the endosperm of guacamole and guar seeds or by extracting it with hot water or hot water. The molecular weight is about 200,000 to 30,000 It is enough. The guanine is easily dispersed in cold water or hot water to form a uniform and viscous solution. In case of 1% solution, the viscosity may be about 3,000 cps, but not limited thereto. The viscosity of the aqueous solution of guar gum is maximally increased at a pH of about 6 to about pH 10, and the viscosity of the aqueous solution of guar gum may be lowered at about pH 10 or about pH 3.5.

About 15 to about 25 parts by weight, about 20 to about 25 parts by weight, or about 15 to about 10 parts by weight of the guar gum may be added, but is not limited thereto.

The clay-like composition of the present invention may further comprise a fat. The fats may be animal fats, vegetable fats or mineral fats.

According to one embodiment of the present invention, the fat is a vegetable fat.

According to one embodiment of the present invention, the vegetable oil is at least one oil selected from the group consisting of olive oil, brown rice oil, grape seed oil, soya oil, corn oil, rapeseed oil, cottonseed oil, sunflower oil, palm oil and safflower oil.

The conventional clay composition has a problem in that the moisture of the user's skin of the clay composition is lost to the clay composition due to the drying of the clay composition due to evaporation of moisture during the use of the clay composition and the skin becomes dry after use of the clay composition. However, the clay-like composition of the present invention prevents the evaporation of moisture in the clay composition by containing the oil and prevents the clay composition from sticking to the user's hands by being put on the user's hands when using the clay composition, Effect.

The fat is not limited to about 1 to about 10 parts by weight or about 4 to about 7 parts by weight.

The clay-like composition of the present invention may further comprise a colorant. The clay-like composition has a high moisture content with respect to the whole weight part, so that it is easily colored by mixing with the coloring agent. The colorant can be used without limitation as long as it is generally used in the art for coloring a clay composition. In particular, when the clay-like composition is used for education, it can be readily colored by mixing the clay-like composition with the water-based paints for art practice, and it is easy to mix even the colored clay-like composition. Can be used. Further, the conventional clay composition requires surface treatment such as coating to prevent moisture evaporation and to prevent the clay composition from remaining in a hand or a molding tool during molding, but the clay-like composition of the present invention has a high moisture content And therefore does not include surface treatment.

According to another aspect of the present invention, there is provided a method for producing a clay-like composition comprising the steps of:

(a) (i) grain flour; (Ii) sodium chloride; (Iii) a gluten or gluten-substitution material; (Iv) glycerin or a glycerin-substitution material; And (v) mixing water to produce a dough mixture;

(b) aging the dough mixture;

(c) baking the aged dough mixture.

The method of the present invention is a method of producing the clay-like composition, the description of which is common between the two is omitted in order to avoid the excessive complexity of the present specification.

Step (a): Preparation of the dough mixture

First, (i) grain flour; (Ii) sodium chloride; (Iii) a gluten or gluten-substitution material; (Iv) a glycerin or glycerin-substitution material; And (v) water are mixed to prepare a dough mixture.

According to one embodiment of the present invention, the mixture is first prepared by adding sodium chloride and glycerin or a glycerin-substituting material to the water, and then the grain powder and gluten or gluten-substituting material are added and kneaded to prepare a dough mixture.

According to another embodiment of the present invention, one or more additives selected from the group consisting of a stabilizer, a preservative, and an edible coloring agent may be additionally added to the dough mixture.

Step (b): aging of the dough mixture

Next, the dough mixture is aged.

The aging is aged at low temperature for about 2 hours to 10 hours, about 3 hours to 8 hours, or about 4 hours to 6 hours at low temperature.

The low temperature is not limited to about 10 캜, from about 2 캜 to about 10 캜, from about 2 캜 to about 6 캜, or from about 2 캜 to about 5 캜.

If the aging is not completed, further aging may be performed at room temperature for about 1 to 3 hours.

Step (c): Baking of the aged dough mixture

Next, the aged dough is baked using an oven.

The process of heating the aged dough includes heating the dough by heating the surface and interior of the dough mixture using an indirect heat source. The indirect heat source is to prevent direct contact of the heat source with the dough in the process of heating the heat source. The heat source such as steam, light wave, and hot air is not limited to direct contact with the dough, Available. As a device providing the indirect heat source, the dough may be heated using a steamer or an oven. If the oven is used, a light wave oven or a convection oven can be used. In addition, when the steam heater is used as the indirect heat source providing device, the steam may be drained to maintain a constant amount of water vapor in the heating device, but the present invention is not limited thereto. The indirect heat source may be to prevent the expansion of the shape in heating the dough mixture. In the heating process of the dough mixture, when the heat source is in direct contact with the dough, the surface of the dough may first ripen, in which case the surface of the dough is denatured to inhibit heat transfer to the interior of the dough. Therefore, the dough is sealed with a substrate such as a foil so that water vapor does not directly come in contact with not only the outside of the dough but also the inside of the dough, so that direct blocking with steam can be prevented. In addition, it may further include maintaining the heating temperature within a certain range during the heating process, since only the outside of the dough is heated or the heating temperature is too high, so that the dough may swell up.

According to one embodiment of the present invention, the step (c) is heated at 100 ° C to about 180 ° C for about 20 minutes to about 1 hour 30 minutes to complete the clay-like composition.

The temperature range or the heating time of the step (c) can be controlled within a certain range according to the amount of the dough and the specific content.

The features and advantages of the present invention are summarized as follows:

(a) The present invention provides clay-like compositions and processes for their preparation.

(b) The clay-like composition of the present invention is produced not only harmless to the human body but also edible.

(c) The clay-like composition of the present invention provides excellent flexibility and moldability.

Figure 1 shows a flow chart of the process for preparing the clay-like composition of the present invention.
Fig. 2 shows photographs of rice flour obtained by pulverizing rice to produce the clay-like composition of the present invention.
Figure 3 shows a photograph of a mixture of gluten, rice flour and guar gum in the process of making a clay-like composition.
FIG. 4 shows the results of mixing the gluten and the rice flour in the course of preparing the clay-like composition and applying pressure thereto.
FIG. 5 shows that, when the gluten is first contacted with water in the process of producing the clay-like composition, it is not mixed well with the rice flour due to the flocculation phenomenon.
Figure 6 shows the finished dough.
Figure 7 shows the clay-like composition baked.
Figure 8 shows the complex viscosity of a clay-like composition using a rotating rheometer.
Figure 9 shows the storage modulus, loss modulus and tangent delta of a clay-like composition using a rotating rheometer.

Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these embodiments are only for describing the present invention in more detail and that the scope of the present invention is not limited by these embodiments in accordance with the gist of the present invention .

Example 1: Preparation of clay-like composition 1

26 g of rice called for about 2 hours in cold water (10 캜 to 15 캜) was pulverized and sieved to produce fine rice flour. 30 g of water was heated to 80 DEG C, and 7 g of sodium chloride (sun salt) and 10 g of vegetable glycerin were added, followed by stirring for 3 to 4 minutes so that the sodium chloride dissolved well. On the other hand, 5.3 g of the ground rice flour, gluten (wheat flour 100%) and 1.5 g of guar gum (natural additives, water-soluble powder) were well mixed to form a dough. At this time, when water is first applied to gluten, the gluten is agglutinated and the gel is formed and the rice flour is not mixed evenly. Therefore, the solution is added to the flour mixed with rice flour, gluten and guar gum. 3 g of grape seed oil was added to the resulting dough, and the mixture was placed in a refrigerator at 2 ° C to allow the dough to mature at a low temperature (20 ° C) for 4 to 5 hours. Approximately 20 g of the aged dough was peeled off and heated in a convection oven at 120 ° C for about 1 hour to prevent water from directly coming into contact with the dough.

FIG. 3 is a photograph of a mixture of gluten, rice flour and guar gum in the course of producing the clay-like composition, and FIG. 4 is a photograph showing the result of mixing the gluten and the rice flour in the course of producing the clay composition and applying pressure thereto. It can be seen that, when rice flour and gluten are mixed, unlike rice flour only, the aggregation phenomenon increases. FIG. 5 is a photograph showing that mixing of rice flour and gluten in the present invention makes it difficult to mix rice flour due to entanglement when gluten is first contacted with water, as compared with the case where a solution of water, sodium chloride and glycerin is contacted. FIG. 6 is a photograph showing the completion of dough by adding water, sodium chloride and glycerin mixture to gluten, rice flour and guar gum during the production of the clay-like composition. FIG. 7 is a photograph of a clay-like composition prepared by heating a finished dough in a convection oven in the course of manufacturing a clay-like composition.

Example 2: Preparation of a clay-like composition 2

Clay-like compositions having the compositions shown in Tables 1 to 3 below were prepared in the same manner as in Example 1 above. The following Tables 1 to 3 show examples of rice flour-substitute grain flour, gluten-substitute material and glycerin-substitute material, respectively (unit g).

- Production Example 1
(Glutinous rice flour) Production Example 2
(flour) Production Example 3
(Barley flour) Production Example 4
(Millet powder) Grain flour 26 26 26 26 gluten 6 6 6 6 23% brine 30 30 30 20 glycerin 10 10 10 10 Time required (minutes) 6 6 5 4

The above glutinous rice flour, wheat flour, barley flour and millet flour were purchased from Bum-A Food Co., Ltd., Korea Flour Co., Ltd., Eidan Town F &

- Production Example 5
(Xanthan gum) Production Example 6
(Carrageenan) Production Example 7
(Alginic acid) Production Example 8
(PGA) Production Example 9
(HPMC) Production Example 10
(Wells) Production Example 11
(Instant sword) Rice flour 26 26 26 26 26 26 26 Gluten-replacement substance 3 3 6 5 4 4 6 23% brine 25 20 30 10 20 20 17 glycerin 8 10 5 7 10 10 10 Guar gum - - - - - - 2 Time 7 8 7 5 10 10 10

'PGA' in Table 2 is propylene glycol alginate and 'HPMC' is hydroxypropylmethylcellulose. SNT, Carbane, Carbonell Korea, SKC, KEMINEX, SNT, and KTN are registered trademarks of Kogyo Co., Ltd. and Kogyo Co., Purchased from Shinwon Trading Co.

- Production Example 12
(PG) Production Example 13
(Sorbitol) Production Example 14
(Hyaluronic acid) Grain (rice) 26 26 26 23% brine 20 25 30 Glycerin-substitution substance 2 3 2 gluten 6 3 6 Time 5 7 7

'PG' in Table 3 is propylene glycol. The PG, sorbitol and hyaluronic acid were purchased from Eissei Technology Co., Ltd., LG Household & Health Care Co., Ltd., and Happycol Co., respectively.

Example 3: Characterization of clay-like compositions

Moisture content measurement

The moisture content of the clay-like composition of Example 1 above was analyzed. The moisture content was determined by the Korea Polymer Research Institute. Briefly, moisture content was measured by measuring the weight before and after leaving in a 105 ° C oven (JEIO TECH) for 2 hours.

×100Water content (%) =

× 100

Order I (g) After (g) Water content (%) Primary 32.127 25.838 19.58 Secondary 39.506 32.695 17.24 Third 39.888 33.171 16.84 SD - - 1.48 CV (%) - - 8.26 Average - - 17.89

The moisture content of the compositions of Production Examples 1 to 14 was analyzed in the same manner as the above method. All moisture contents were calculated by the average value after 3 times.

Manufacturing example Water content (%) One 9.71 2 19.37 3 15.98 4 18.09 5 27.20 6 23.43 7 22.14 8 15.71 9 16.12 10 17.44 11 19.42 12 24.67 13 20.12 14 24.09

As a result of measuring the water content, the water content was as high as 20% or more in Production Examples 5, 6, 7, 12, 13 and 14.

Hardness measurement

The hardness was measured by the Korea Polymer Testing Institute. Briefly, Durometer Hardness 00 Type (TECLOCK, GS-754G) was used in accordance with ASTM D2240 (Standard Test Method for Rubber Property-Durometer Hardness) method at 23 ± 2 ° C temperature and 45 ± 4% relative humidity.

The clay-like composition containing the rice flour of Example 1 was measured to be '3 or less' which is the minimum measurement limit value of the hardness meter, and the hardnesses of Preparation Examples 1 to 14 are shown in Table 6.

Manufacturing example Hardness One 32 2 24 3 14 4 51 5 - 6 - 7 3 or less 8 17 9 - 10 10 11 24 12 26 13 3 or less 14 3 or less

Viscoelastic measurement

The viscoelasticity of the clay-like composition of Example 1 was measured. The viscoelasticity was determined by the Korea Polymer Testing Institute. Briefly, the analytical instrument was performed with TA instrument LTd, DHR-1, at a temperature of 25 ° C. The minimum torque torque is 10 nN.multidot.m, the maximum torque is 150 mN.m., the torque resolution is 0.1 nN.m., the measurement geometry is 25 mm, the measurement gap is 0.5 mm, the cycle is 0.1 To 100 Hz.

The measurement results are shown in FIG. 8 and FIG.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. It is therefore intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

Claims (8)

(a) grain flour; (b) sodium chloride; (c) a gluten or gluten-substitution material; (d) a glycerin or glycerin-substitution material; And (e) water.
The method according to claim 1, wherein the grain flour is at least one grain flour selected from the group consisting of rice flour, glutinous rice flour, barley flour, sorghum flour, corn flour, flour, rye flour, buckwheat flour, ≪ / RTI >
The method of claim 1, wherein the gluten-replacing material is selected from the group consisting of xanthan gum, carrageenan, alginate, propylene glycol, propylene glycol alginate, and HPMC (hydroxypropylmethylcellulose) ≪ / RTI > wherein said at least one gluten substitute is at least one gluten substitute selected from the group consisting of < RTI ID = 0.0 >
The method of claim 1, wherein the glycerin-substitution material is at least one glycerin-replacement material selected from the group consisting of hyaluronic acid, sorbitol, and propylene glycol. Composition.
The clay-like composition of claim 1, wherein the clay-like composition has a moisture content of 5-30 wt%.
The composition of claim 1, wherein the clay-like composition comprises: (a) 21 to 31 parts by weight of a grain flour; (b) 2-12 parts by weight of sodium chloride; (c) 1 to 10 parts by weight of a gluten or gluten-substituent; (d) 1 to 15 parts by weight of a glycerin or glycerin-substituent; And (e) 25 to 35 parts by weight of water.
The clay-like composition of claim 1, wherein the clay-like composition further comprises at least one additive selected from the group consisting of stabilizers, fats and edible colorants.
A method of making a clay-like composition comprising the steps of:
(a) (i) grain flour; (Ii) sodium chloride; (Iii) a gluten or gluten-substitution material; (Iv) a glycerin or glycerin-substitution material; And (v) mixing water to produce a dough mixture;
(b) aging the dough mixture;
(c) baking the aged dough mixture.

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