KR101837461B1 - Method of manufacturing casein plastic and infant play items made of it - Google Patents

Abstract

The present invention relates to a method for manufacturing casein plastic and infant toys made of the casein plastic using the same, comprising the following steps: (a) a step for extracting casein protein from milk; (b) a step for manufacturing powder by mixing 3-5 parts by weight of bay salt, 0.1-0.5 parts by weight of vinegar having concentration of 20-25 w/v%, and 0.05-0.2 parts by weight of grapefruit extracts per 100 parts by weight of casein protein, agitating and grinding the mixture; and (c) a step for manufacturing a pellet-shaped product by mixing 5-7 parts by weight of water, 1-1.5 parts by weight of baking powder and 3-5 parts by weight of a modified starch, agitating and extruding the mixture. Therefore, the casein plastic which is harmless and nonpoisonous to a human body can be manufactured in a large quantity, and the infant toys with a texture similar to plain clay and rubber clay.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing casein plastic and an infant play equipment made of casein plastic by the method,

The present invention relates to a method for manufacturing casein plastics and an infant play item made of casein plastic by the method.

Korean Patent Registration No. 1577364, filed on Dec. 12, 2015, entitled "Co-operative Clay and Method for Producing the Same") is characterized in that (a) a pearlite pearlite pearlite has a size of 20 to 200 μm To prepare a perchlorate powder; (b) 54 to 58% by weight of the pulverized perineum powder of the step (a), 2.5 to 3.0% by weight of polyvinylacetate, 13.4 to 13.86% by weight of glycerin, 0.5 to 0.8% by weight of an inorganic pigment (pigment) having a weight average molecular weight of 500 to 500,000, and adding a curing agent consisting of borax and an antimicrobial agent to the inside of the primary mixer, respectively; (c) primary mixing the input materials of step (b) in the primary mixer by high speed rotation of the mixer at room temperature for 2 to 5 minutes; (d) adding 25.6 to 28.4% by weight of propylene glycol together with the mixture having been subjected to the primary mixing to the interior of the secondary mixer, and then mixing the mixture at room temperature for 3 to 8 minutes at a constant rotation speed of the stirrer; (e) drying the secondary mixture in the aging chamber at room temperature for 24 hours to complete the coagulated clay, the method comprising the steps of: (a) 0.05 parts by weight of a curing agent and 0.03 parts by weight of an antimicrobial agent are added to 100 parts by weight of the curing agent and 100 parts by weight of the curing agent to be mixed and mixed in the mixer, And 2.5 parts by weight of distilled water is mixed with 100 parts by weight of the mixture at the time of the primary mixing in the step (c) to smoothly mix the primary mixture. Meanwhile, in the mixing of the primary mixer of the step (c) The speed is 3000 rpm, and the rotation speed of the agitator of the secondary mixer in the step (d) is 1000 rpm.

Such prior art is not toxic to humans and animals, and does not cause any harm to the skin of young children. Antimicrobial substances of environmentally friendly materials easily permeate between the small pores of the perlite, So that the viscosity of the co clay can be maintained at a constant level while softening the co clay so that the cohesiveness of the co clay is further improved without adhering easily to the hand, And it can be repetitively united and loosened by the nature of the coagulant. Therefore, after the manufacture of the sculpture, there is no deformation of the shape of the sculpture, the sculptural property is maintained while maintaining sufficient elasticity, and the skin of the children is stably protected While there is an excellent effect of performing the function, the manufacturing process is complex, There was a fundamental problem that was non-toxic.

Korean Registered Patent No. 1425974 (registered date: 2014.7.28, entitled "Cooperation clay") is a polyethylene glycol having a molecular weight of 600 Da and polyethylene glycol having a molecular weight of 8000 Da and having a weight ratio of 5: 1; Ethanol in an amount of 50 to 200 parts by weight based on 100 parts by weight of polyethylene glycol of 8000 Da molecular weight; A natural pigment comprising 0.01 to 5 parts by weight based on 1 part by weight of the mixed polyethylene glycol; A polygonal shaped silica having an average particle size of 15-20 [mu] m; And a diatomaceous earth having a length of 3 to 5 times the diameter of the silica and the diatomaceous earth is 1: 1 to 2: 1, and the total content of the silica and the diatomaceous earth is 120 parts by weight based on 100 parts by weight of the mixed polyethylene glycol Lt; RTI ID = 0.0 > clay. ≪ / RTI >

Such conventional techniques are suitable for use in infants because they are non-toxic, have little color change even when they are exposed to air, are hardly hardened without touching hands, and can be reused for a long time. However, There were fatal disadvantages.

It is an object of the present invention, which is created to solve the above problems, to provide a casein plastic manufacturing method which is simple in manufacturing process and contains only casein, and an infant play article made of casein plastic by this method.

This object of the present invention can be achieved by a method for producing a milk protein comprising the steps of: (a) extracting casein protein from milk; (b) 3 to 5 parts by weight of a salt of sunflower, 0.1 to 0.5 parts by weight of 20 to 25 w / v% of vinegar and 0.05 to 0.2 parts by weight of a grapefruit extract are mixed with 100 parts by weight of casein protein, followed by stirring and pulverizing to produce a powder; (c) mixing 5 to 7 parts by weight of water and 1 to 3 parts by weight of cooking oil with respect to 100 parts by weight of the casein protein powder, and stirring and extruding the mixture into a pellet shape.

Preferably, the step (a) of the present invention comprises the steps of: (a) preparing a milk by filling it in a container, stirring the mixture, removing the suspended matter in the upper layer, And 50 to 70 parts by weight of water at 50 to 65 ° C are mixed and then centrifuged to remove the ascending water. (C) Ligne or vinegar is added to the mixture and stirred. When solidification proceeds, (D) pressing the cotton cloth at 5 to 7 bar, removing the cotton cloth, and storing the cotton cloth at 5 to 10 < 0 > C. The method comprising the steps of:

Preferably, the method further comprises the step (d) between the steps (a) and (b) of the present invention, wherein the step (d) comprises adding the casein protein extracted in the vessel to 100 parts by weight of casein protein 30 to 45 parts by weight of ethyl alcohol is added and left for 60 to 70 minutes, followed by hot air drying.

Another object of the present invention is to provide a process for producing a starch-containing starch, which comprises extruding 15 to 30 parts by weight of modified starch, 1 to 1.5 parts by weight of a grapefruit extract, and ethyl alcohol by mixing and stirring into 100 parts by weight of casein plastic, Can be achieved by an infant play goods.

Preferably, the composition further comprises 3 to 4 parts by weight of grain powder per 100 parts by weight of the casein plastic of the present invention, wherein the grain powder is roasted at 170 to 185 ° C for 5 to 10 minutes and then cooled to a cold rice flour, wheat flour, barley flour Brown rice flour, and brown rice flour.

INDUSTRIAL APPLICABILITY As described above, the present invention is capable of mass-producing casein plastics which are harmless and nontoxic to human bodies, and can provide an infant play goods having a texture similar to that of ordinary clay and rubber clay.

Hereinafter, embodiments of the present invention will be described.

Casein  Protein extraction

1. Milk is charged into a container and stirred, then the supernatant is removed, and the mixture is filtered through a cotton swab.

2. 100 parts by weight of the filtered milk is mixed with 50 to 70 parts by weight of water at 50 to 65 캜, followed by centrifugal separation to remove the rising water.

3. Add the rennet or vinegar and stir. After solidification, add 1.5 ~ 2bar of high-pressure air for 5 ~ 10 minutes, fill in cottonseed and leave at 5-10 ℃ for 5-7 hours.

4. Squeeze cotton to 5 ~ 7 bar, remove cottonseed and store at 5 ~ 10 ℃.

Here, the reason for introducing the high-pressure air is to delay the coagulation because the amount of the casein protein to be finally extracted decreases when the solidification proceeds rapidly.

The amount of casein protein extracted while varying the pressure and duration of high pressure air is shown in Table 1 below.

As shown in Table 1, in the control group, 100 g of casein protein was extracted by not injecting high-pressure air, and 135 to 170 g of casein protein was extracted in Experimental Examples 4 to 9 in which high-pressure air was introduced for a certain period of time. The delivery of high-pressure air has been shown to affect the amount of casein protein extracted.

Casein  Plastic manufacturing

1. After filling the casein protein extracted in the container, 30 to 45 parts by weight of ethyl alcohol is added to 100 parts by weight of the casein protein, left for 60 to 70 minutes, and then subjected to hot air drying. Here, the reason for providing ethyl alcohol is to sterilize casein protein, which is 70% aqueous solution.

2. To 100 parts by weight of dried casein protein, 3 to 5 parts by weight of sun-salt, 0.1 to 0.5 parts by weight of 20 to 25 w / v% of vinegar and 0.05 to 0.2 parts by weight of grapefruit extract are mixed and stirred to be pulverized. Here, the grapefruit extract is a natural preservative provided for the preservation of food, but in this embodiment, it is provided to prevent the yellowing of casein protein.

3. 5 to 7 parts by weight of water and 1 to 3 parts by weight of cooking oil are mixed with 100 parts by weight of casein protein powder, and the mixture is stirred and extruded to prepare pellets.

Casein plastic  Manufacture of children's play goods using

15 to 30 parts by weight of modified starch, 1 to 1.5 parts by weight of grapefruit extract, and ethyl alcohol are mixed and stirred into 100 parts by weight of pellet-shaped casein plastic produced in this embodiment to produce a rod.

The present embodiment further includes 3 to 4 parts by weight of grain powder.

Here, the grain flour is a filler and is at least one of rice flour, wheat flour, barley flour or brown rice flour. In addition, grain flour is roasted after being roasted at 170 ~ 185 ℃ for 5 ~ 10 minutes to prevent corruption.

Table 2 shows the results of the sensory test on texture and odor of 20 children aged 7 to 12 years in order to examine the characteristics of the children's play equipment of the present embodiment. Here, clay and rubber clay are general products sold in the market, Experimental Example 13 does not contain grain flour, and Experimental Example 14 contains grain flour. In particular, the "odor" of the test items is defined as a score of 10 if the odor is not evident or is very small. The lower the score, the greater the bad odor.

Referring to Table 2, it was confirmed that the textures of Experiments 13 and 14 were similar to those of clay in textures, while the smell was found to have no bad smell or no bad odor in comparison with clay and rubber clay.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

Claims (5)

(a) extracting casein protein from milk;
(b) 3 to 5 parts by weight of a salt of sunflower, 0.1 to 0.5 parts by weight of 20 to 25 w / v% of vinegar and 0.05 to 0.2 parts by weight of a grapefruit extract are mixed with 100 parts by weight of casein protein, followed by stirring and pulverizing to produce a powder;
(c) mixing 5 to 7 parts by weight of water and 1 to 3 parts by weight of cooking oil with respect to 100 parts by weight of the casein protein powder, and stirring and extruding the mixture to prepare a casein plastic.
The method according to claim 1,
Wherein the step (a) comprises the steps of: (a) filling the container with milk, stirring the mixture, removing the suspension of the upper layer, and preparing the mixture by filtering with cotton; and (b) Adding 50 to 70 parts by weight of water and centrifuging to remove the ascending water; and (c) adding lignin or vinegar to the mixture. When the solidification proceeds, 1.5 to 2 bar of high-pressure air is added for 5 to 10 minutes (D) pressing the cotton yarn at 5 to 7 bar to remove the cotton yarn, and then storing the cotton yarn at 5 to 10 ° C. ≪ / RTI >
The method according to claim 1,
(D) between step (a) and step (b), wherein the step (d) comprises filling the casein protein extracted in the container with 30 to 45 wt% of ethyl alcohol And the mixture is allowed to stand for 60 to 70 minutes and then subjected to hot air drying.
Claims 1. A process for producing a starch, comprising the steps of mixing 15 to 30 parts by weight of modified starch, 1 to 1.5 parts by weight of a grapefruit extract, and an infant prepared by extruding and extruding into a rod by mixing ethyl alcohol with 100 parts by weight of casein plastic produced by any one of claims 1 to 3 Play equipment.
5. The method of claim 4,
Wherein the grain powder is at least one of cold rice flour, wheat flour, barley flour or brown rice flour after roasted at 170 to 185 ° C for 5 to 10 minutes, and further contains 3 to 4 parts by weight of grain flour based on 100 parts by weight of the casein plastic Features infant play goods.