JPS5951628B2 - Granular paste composition and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a granular paste composition that is rapidly soluble in water and a method for producing the same.

Conventionally, water-soluble powder pastes have been widely used because they are extremely convenient and can be used to prepare a paste solution simply by dissolving them in water. In general, when a size solution is prepared by stirring, the grafted part of the powdered size particles swells, which significantly inhibits the grafting of the inner size particles surrounded by the grafted particles. This has the disadvantage of producing lumps, which requires strong stirring in order to completely dissolve them, and requires a long time to dissolve.

To this end, conventional methods have been used to sieve out fine particles and coarse particles that are difficult to dissolve, which are the main causes of mako formation, and to narrow the particle size range by making the particle size of the powder paste uniform, thereby accelerating swelling even slightly and promoting dissolution. Or, by adding a large amount of foaming agent, or by coating particles of powdered glue that tends to produce inorganic salts or mako with a powdery glue that does not have a loose structure like polyvinyl alcohol and is less likely to cause mako. Efforts have been made to speed up the dissolution time of glues.

However, the method of narrowing the particle size range of the powder size does not provide an essential solution, and the method of adding a blowing agent or inorganic salt poses the problem that the viscosity of the size liquid decreases due to the incorporation of the inorganic salt or blowing agent. had.

Furthermore, the method of coating with powdered glue, such as polyvinyl alcohol, which does not easily cause lumps, has problems such as the use of polyvinyl alcohol, etc., which inhibits the unique characteristics of the main ingredient, the glue, which tends to produce lumps, and also causes the viscosity of the glue to fluctuate. This method is inconvenient and cannot be used particularly when the main paste is used alone to exhibit its unique properties.
Moreover, this method also has the problem that it is troublesome to produce a glue composition in which the main ingredient glue is coated with a glue such as polyvinyl alcohol. The inventors of the present invention have made the present invention as a result of intensive studies to improve the above-mentioned circumstances. In addition to being able to easily prepare a concentrated glue solution, it also allows the unique properties of various water-soluble powder glues to be exhibited without interfering with their properties, and has excellent storage stability and handling properties. The object of the present invention is to provide a granular paste composition that can be easily, efficiently, and inexpensively produced in various properties, and a method for producing the same. That is, the present invention sprays an aqueous solution of a non-foaming water-soluble organic substance that dissolves in water and does not significantly change the viscosity of the water onto water-soluble powder paste particles fluidized by hot air,
The present invention provides a granular paste composition in which the surface of each particle of a water-soluble powder paste is coated with the organic substance after drying, and a method for producing the same.

The present invention will be explained in detail below.

The glue composition according to the present invention is in the form of granules, each particle of which contains a water-soluble powder glue as a main component, and a non-foaming water-soluble organic material that dissolves in water and does not significantly change the viscosity of the water. An aqueous solution of the organic substance is sprayed onto a water-soluble powder paste formed by the substance and fluidized with hot air as described later, and dried to adhere the organic substance to the water-soluble paste particles. It is produced by granulation.

In this case, the paste composition produced by this fluidized granulation method is formed in such a state that each granule of the water-soluble powder paste is coated on the surface of each particle with the organic substance. The water-soluble powder glue used in the present invention may be any commonly used glue, and one or a mixture of two or more thereof may be used, but in particular carrageenan, which is a natural product, and semi-synthetic products may be used. The effects of the present invention are maximized when using a glue that is easily soluble in water and tends to cause lumps, such as sodium carboxymethyl cellulose or the synthetic carpopol.

In addition, water-soluble organic substances that, when dissolved in water, have a viscosity of 1 to 10 centipoise in a 5% aqueous solution at 20°C, do not significantly change the viscosity of water, and are non-foaming. Any substance can be used as long as it does not change the physical properties of the powdered thickening material itself, and for example, sonolevit, mannitrate, lactose, satuelin, etc. can be suitably used.

The amount of the organic substance to be used varies depending on the type of substance used, the particle size of the glue composition granules to be produced, etc., but is generally 5 to 50% by weight, preferably 5% to 50% by weight based on the glue composition. It is 15 to 20% by weight. Next, a method for producing a granular paste composition using the water-soluble powder paste and water-soluble organic substance will be described in detail.

When producing a glue composition by a fluidized granulation method, the powdered glue is placed in a fluidized granulation dryer and heated to a predetermined temperature, preferably 6
A predetermined powder paste is fluidized by hot air heated to 0 to 90°C to form a fluidized bed, and an aqueous solution dissolving the organic substance is sprayed onto this fluidized bed.

As a result, an aqueous solution of an organic substance is uniformly applied to the surface of the glue particles, which is dried by hot air, and the solute (water-soluble organic substance) in the aqueous solution becomes powder on the surface of the glue particles. adhere to. Next, the process of further spraying the aqueous solution to coat the paste particles and drying is repeated. In the process, when the aqueous solution application and moisture drying reach equilibrium, the particles adhere to each other, and the aqueous solution is further applied to the surface and dried.
Granulated as granules. In this case, conditions such as the spraying speed and spraying pressure of the aqueous solution vary depending on the type of solute in the aqueous solution, concentration, etc., but generally, the hot air temperature is 60-90°C, the granulation temperature is 60-65°C, and the spraying speed is 10-90°C. 30m1/s
ec, preferably the spray air pressure is 2 kg.
Further, the solute concentration in the aqueous solution is generally 20 to 80% by weight, thereby ensuring that a rapidly dissolving granular paste composition can be obtained. In addition, the spray speed of the aqueous solution, the amount of the aqueous solution used,
By changing the size of the spray particles, etc., spherical granular paste compositions having various dissolution rates (required time for dissolution) and various particle sizes can be produced. Therefore, when the granular paste composition granulated by the above method is poured into water, the water-soluble organic substance on the granule surface that comes in contact with water first dissolves, so that the granules do not interact with each other. There is no adhesion between the granules, and in this way, the water-soluble substance coating the surface of each powder paste particle in each granule dissolves quickly, and the surface of each powder paste particle immediately comes into contact with water. Therefore, the paste composition dissolves and swells very quickly without causing lumps.As explained above, the granular paste composition according to the present invention is made by immersing each particle of the water-soluble powder paste in water. Since the granules are coated with a non-foaming water-soluble organic material that does not significantly change the viscosity of water when dissolved, when the granules are poured into water, the organic material causes the granules to adhere to each other. The powder paste particles of each granule quickly come into contact with water without causing such inconvenience.

That is, if each granule is simply a powdered paste particle in which the organic substance is dispersed, the granules may adhere to each other and cause lumps, but in the paste composition of the present invention, the paste composition of the present invention is The organic substance around the glue particles is dissolved, and as a result, the powdered glue particles immediately come into contact with water without adhering to each other, so that the glue composition quickly dissolves in water without forming lumps. In addition, when dissolved in water, the granules do not come into contact with each other,
Since it has good dispersibility in water, a highly concentrated paste solution can be prepared easily and quickly. Furthermore, since we have used water-soluble organic substances that do not significantly change the viscosity of water when dissolved in water, the properties of the water-soluble glue are not affected by this, and the glue used Unique performance is effectively demonstrated.
Moreover, since the present invention is in the form of granules, it has excellent physical properties such as water absorption and fluidity, and has extremely good storage stability and handling properties. Furthermore,
According to the present invention, fast-dissolving granular paste compositions having various dissolution rates, particle sizes, etc. can be produced easily, efficiently, and inexpensively, and the paste compositions having a desired particle size can be crushed, etc. It can be granulated without any problems and is easy to operate. EXAMPLES The present invention will be explained in more detail below with reference to Examples and Comparative Examples.

[Example 1] 1.5 kg of carboxymethylcellulose sodium with a particle size distribution of 60 to 200 mesh was fluidized by hot air at 60 to 65°C, and a 60% by weight aqueous solution of Solpit was used as a spray liquid, and 500 g of this (as Solpit powder) 3
00g) was sprayed at a spraying rate of 20ml/sec and a spraying pressure of 2kg, and granulated to produce a granular paste.

The obtained paste had a substantially uniform particle shape, and no particles larger than 20 mesh were observed. [Example 2
] 1.5 kg of carrageenan with a particle size distribution of 90 to 150 mesh
60% by weight Solpit aqueous solution as spray liquid
A granular paste was produced in the same manner as in Example 1 using 00g.

The obtained paste had a substantially uniform particle shape as in Example 1, and no particles of 20 mesh or coarser were observed. The pastes obtained in Examples 1 and 2 were dissolved in the following manner, and the dissolution time was measured to obtain the results shown in Table 1.

For comparison, the particle size distribution was determined by sieving from 55 to 10.
Sodium carboxymethyl cellulose prepared to have a particle size of 0 mesh (Comparative Example 1) and sodium carboxymethyl cellulose having a normal particle size distribution of 80 to 300 mesh (Comparative Example 2) were used, and the dissolution times were similarly compared. <Method for measuring dissolution time> Pour 100 ml of water into a 200 ml beaker and add 0.5 g of the paste sample while stirring by rotating the stirrer tip at a constant speed using a magnetic stirrer. The time required for the material to be completely dispersed and dissolved in water to obtain a transparent paste solution was measured.

Claims (1)

[Claims] 1 The surface of each particle of the water-soluble powder paste is coated with a non-foaming water-soluble organic substance that dissolves in water and does not significantly change the viscosity of the water. A granular paste composition. 2. Spray an aqueous solution of a non-foaming water-soluble organic substance that does not dissolve in water and significantly change the viscosity of water onto the water-soluble powder paste particles fluidized by hot air, and dry the mixture. 1. A method for producing a granular paste composition, which comprises coating the surface of each particle of the paste with the organic substance and granulating it.