KR20230091596A - Manufacturing method of earthenware tile having antibacterial and deodorant function and earthenware tile using the same - Google Patents

Abstract

The present invention relates to a method for producing ceramic tiles having antibacterial and deodorizing properties and to ceramic tiles manufactured by the method. More specifically, by mixing functional substances with antibacterial and deodorizing functions with a glaze pigment applied to a ceramic tile, antibacterial and deodorizing functions can be imparted to the ceramic tile. In addition, when applying a glaze pigment mixture as described above, the glaze pigment mixture is applied to the ceramic tile after primary firing, cooling, and secondary firing. By thirdly firing the ceramic tile with the glaze pigment mixture, the functional materials can be seated on the ceramic tile and the functionality can be expressed more efficiently. In addition, during the third firing, by gradually changing the temperature over a certain period of time to the set temperature, safety can be further improved by efficiently maintaining the shape of the ceramic tile and preventing the shape deformation and damage.

Description

Method for manufacturing ceramic tile having antibacterial and deodorizing properties and ceramic tile manufactured by this method

The present invention not only improves the functionality of ceramic tiles by efficiently expressing antibacterial and deodorizing properties, but also improves the safety of ceramic tiles, such as preventing shape deformation and damage, ceramic tiles. It relates to a manufacturing method and a ceramic tile manufactured by this method.

In general, ceramic tile is a tile made of earthenware, and is widely used in the form of various products in a variety of indoor and outdoor spaces, such as various decorative materials, in addition to traditional products such as walls and floors.

On the other hand, in general, various bacteria breeding in indoor and outdoor spaces are absorbed and accumulated in the human body through the respiratory system and the like, causing various diseases and adversely affecting the human body. In addition, many antibacterial agents using chemical compounds have been developed to prevent the propagation of bacteria as described above, but these chemical compounds themselves may adversely affect the human body.

In addition, various types of odors generated in indoor and outdoor spaces also cause considerable discomfort, and as a method of removing them, the odor is removed by a masking effect that offsets the odor with a different type of odor, or by using a separate air collecting device and chemical deodorizer. However, the odor removal method by masking effect is difficult to expect the effect in places with severe odors, open places exposed to the outside or large spaces, and in the case of air collecting devices, expensive equipment However, the deodorization efficiency is not so good, and chemical deodorizers, like chemical antibacterial agents, can adversely affect the human body.

Considering this, if antibacterial and deodorizing properties are given to ceramic tiles used in various types of products in various indoor and outdoor spaces, it will be possible to efficiently impart antibacterial and deodorizing properties without using a separate antibacterial agent or deodorant. Consumers are also increasing their expectations and demands for such functionality.

Therefore, prior art Patent Document 1 discloses a ceramic tile in which an antibacterial function is imparted to the ceramic tile by subjecting the firstly fired ceramic tile to surface treatment with a glaze containing anion and jade and then performing secondary firing.

However, the prior art such as Patent Document 1 is not only vulnerable to shape deformation or damage of the ceramic tile itself due to only secondary firing, but also loses its antibacterial function during firing, or the antibacterial glaze layer is easily removed from the ceramic tile body. There was a problem that the expression of antibacterial and deodorizing properties was insufficient due to peeling and detachment.

On the other hand, in order to solve this problem, the secondly fired ceramic tile can be fired again for the third time, but in the case of the prior art, when the third firing is performed, a lot of deformation or damage occurs, so there is a problem that reprocessing (firing) after the second firing is not possible. .

Patent Document 1: Republic of Korea Patent Registration No. 10-0563559 "Method for manufacturing ceramic jade tiles and ceramic tile glaze"

Therefore, the present invention is to solve the above problems, and to impart antibacterial and deodorizing functions to ceramic tiles by mixing a functional material having antibacterial and deodorizing functions with a glaze pigment applied to ceramic tiles. make it a task

In addition, in applying the glaze pigment mixture as described above, the glaze pigment mixture is applied to the ceramic tile after the first firing, cooling, and the second firing, and the third firing of the ceramic tile together with the glaze pigment mixture, Another task is to allow the functional materials to be seated on the ceramic tile so that the functionality can be expressed more efficiently.

In addition, during the 3rd firing, by slowly changing the temperature over a certain period of time until the set temperature, another task is to efficiently maintain the shape of the ceramic tile and prevent its shape deformation and damage, thereby further improving safety. do it with

In the method of manufacturing a ceramic tile, the present invention includes the steps of refining modeling soil (S100); Forming and drying a ceramic tile using the ground modeling soil (S200); Primary firing of the molded and dried ceramic tile (S300); Cooling the first fired ceramic tile (S400); Secondarily firing the cooled ceramic tiles (S500); Applying a glaze pigment mixture to the secondly fired ceramic tile (S600); and thirdly firing the ceramic tile coated with the glaze pigment mixture (S700). Use tiles as a means of solving problems.

Here, the first firing is fired at 800 ~ 820 ℃, the second firing is preferably fired at 1100 ~ 1150 ℃.

In addition, the third firing is preferably fired while gradually increasing the temperature for 900 to 1,000 minutes, fired by raising the temperature to 800 to 820 ° C, and maintaining the temperature for 60 to 65 minutes when reaching 800 to 820 ° C.

Meanwhile, the glaze pigment mixture is made by mixing 70 to 100 parts by weight of illite powder with respect to 100 parts by weight of the glaze pigment, or by mixing 70 to 100 parts by weight of germanium powder with respect to 100 parts by weight of the glaze pigment, or 70 to 100 parts by weight of ceramic powder based on 100 parts by weight, or 70 to 100 parts by weight of activated carbon powder based on 100 parts by weight of glaze pigment, or 1.0 to 1.5 parts by weight of photocatalyst powder based on 100 parts by weight of glaze pigment It is preferable to mix parts by weight.

The present invention has the effect of imparting antibacterial and deodorizing functions to ceramic tiles by mixing a functional material having antibacterial and deodorizing functions with glaze pigments applied to ceramic tiles, but by applying the glaze pigment mixture as described above. After the first firing, cooling, and second firing, the glaze pigment mixture is applied to the ceramic tile, and the ceramic tile is fired together with the glaze pigment mixture for the third time, so that the functional materials are settled on the ceramic tile and its functionality It has the effect of expressing more efficiently, and also, during the 3rd firing, by slowly changing the temperature over a certain period of time until the set temperature, the shape of the ceramic tile is efficiently maintained and its shape deformation and damage are prevented, etc. There is an effect that can further improve safety.

1 is a process flow diagram showing a method of manufacturing a ceramic tile having antibacterial and deodorizing properties according to the present invention

The present invention for achieving the above effect relates to a method for manufacturing a ceramic tile having antibacterial and deodorizing properties and a ceramic tile manufactured by the method, and only parts necessary for understanding the technical configuration of the present invention are described. It should be noted that descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention.

Hereinafter, a method of manufacturing a ceramic tile having antibacterial and deodorizing properties according to the present invention and a ceramic tile manufactured by this method will be described in detail.

As shown in FIG. 1, the present invention includes a kneading step (S100), a molding and drying step (S200), a first firing step (S300), a cooling step (S400), a second firing step (S500), and a glaze pigment mixture. It comprises an application step (S600) and a tertiary firing step (S700).

The step S100 is a step of refining the shaping soil, which is kneaded by putting the shaping soil into a plowing machine. Here, the material is not limited to the molding soil, and various known materials used in ceramic tiles can be applied.

The step S200 is a step of molding and drying the ceramic tile using the ground modeling soil, and the ceramic tile is molded into a predetermined standard or a shape desired by the user, and then dried using a dryer. Here, since the drying time is variable according to the material, use, and shape of the ceramic tile, it is not particularly limited, and various known times may be applied according to the above conditions.

The step S300 is a step of first firing the molded and dried ceramic tile using a firing machine, and firing at 800 to 820 ° C. Here, when the firing temperature is less than 800 ° C, there is a risk that the firing may not be performed properly, and when the firing temperature exceeds 820 ° C, there is a risk that the shape of the ceramic tile may be deformed or damaged.

The step S400 is a step of cooling the primarily fired ceramic tile. Since rapid cooling may cause deformation or damage of the ceramic tile, the ceramic tile is gradually fired until the temperature of the first fired ceramic tile is lowered to 100° C. or less. Cool down.

The step S500 is a step of secondary firing the cooled ceramic tile using a firing machine, and firing at 1100 to 1150 ° C. Here, when the firing temperature is less than 1100 ° C, there is a possibility that the firing may not be performed properly, and when the firing temperature exceeds 1150 ° C, there is a risk that the shape of the ceramic tile may be deformed or damaged.

The step S600 is a step of applying a glaze pigment mixture to the second fired ceramic tile, and the glaze pigment mixture is illite powder, germanium, which is known as a functional material having antibacterial and deodorizing functions in the glaze pigment. It is prepared by mixing powder, ceramic powder, activated carbon powder, or photocatalyst (eg, titanium dioxide (TiO ₂ ) photocatalyst, etc.) powder.

More specifically, the glaze pigment mixture is made by mixing 70 to 100 parts by weight of illite powder with respect to 100 parts by weight of the glaze pigment, or by mixing 70 to 100 parts by weight of germanium powder with respect to 100 parts by weight of the glaze pigment, or 70 to 100 parts by weight of ceramic powder based on 100 parts by weight of pigment, or 70 to 100 parts by weight of activated carbon powder based on 100 parts by weight of glaze pigment, or 1.0 to 100 parts by weight of photocatalyst powder based on 100 parts by weight of glaze pigment A mixture of 1.5 parts by weight is used.

Here, the powder means a powder having a particle size of 0.1 to 10 μm, but is not necessarily limited to the above range. On the other hand, when the content of each of the functional materials is less than the above range, the function is remarkably deteriorated, and when the content is large, the function is not improved and rather adverse effects may occur.

On the other hand, the glaze pigment is a known pigment that imparts color to the glaze, and is not limited to a specific product, and various generally known glaze pigment products can be used.

The step S700 is a step of thirdly firing the ceramic tile coated with the glaze pigment mixture using a firing machine, and firing by gradually increasing the temperature for 900 to 1,000 minutes, firing by raising the temperature to 800 to 820 ° C, and firing at 800 to 820 When reaching ℃, keep the temperature for 60 ~ 65 minutes and bake it.

That is, by firing the ceramic tile in which the glaze pigment mixture is applied together with the glaze pigment mixture, the functional materials described above are settled on the ceramic tile to efficiently improve its functionality, as well as gradually over a certain period of time as described above. By raising the temperature and firing it for the third time, it effectively improves the functionality and safety of ceramic tiles, such as preventing shape deformation and damage.

Here, if the temperature rise time is less than 900 minutes or the firing temperature is less than 800 ° C, functional materials may not be properly settled, and if the temperature rise time exceeds 1,000 minutes or the firing temperature exceeds 820 ° C, the ceramic tile The shape may be deformed or damaged.

Hereinafter, the present invention will be described in more detail based on the following examples, but the present invention is not limited by the examples.

1. Manufacturing of ceramic tiles

(Example 1)

After the modeling soil was put into a kneading machine and kneaded and kneaded (S100), a ceramic tile was molded using this and dried using a dryer (S200). Then, the molded and dried ceramic tiles were first fired at 800° C. using a firing machine (S300), and then cooled until the temperature of the primarily fired ceramic tiles was lowered to 100° C. or less (S400). And after secondary firing of the cooled ceramic tiles at 1100 ° C (S500), glaze pigment mixture (mixing 70 to 100 parts by weight of illite powder with respect to 100 parts by weight of glaze pigment) to the secondary fired ceramic tiles is applied (S600), and the ceramic tile coated with the glaze pigment mixture is gradually heated to 800 ° C for 900 minutes using a firing machine, and when it reaches 800 ° C, the temperature is maintained for 65 minutes and subjected to third firing (S700). did

(Example 2)

After the modeling soil was put into a kneading machine and kneaded and kneaded (S100), a ceramic tile was molded using this and dried using a dryer (S200). Then, the molded and dried ceramic tile was first fired at 820° C. using a firing machine (S300), and then cooled until the temperature of the primarily fired ceramic tile was lowered to 100° C. or less (S400). And after secondary firing of the cooled ceramic tile at 1150 ° C (S500), a glaze pigment mixture (mixing 70 to 100 parts by weight of germanium powder with respect to 100 parts by weight of the glaze pigment) is added to the secondary fired ceramic tile. After coating (S600), the ceramic tile coated with the glaze pigment mixture was gradually heated to 820 ° C for 1,000 minutes using a firing machine, and when it reached 820 ° C, the temperature was maintained for 60 minutes to produce a third firing (S700). .

(Example 3)

After the modeling soil was put into a kneading machine and kneaded and kneaded (S100), a ceramic tile was molded using this and dried using a dryer (S200). Then, the molded and dried ceramic tiles were first fired at 800° C. using a firing machine (S300), and then cooled until the temperature of the primarily fired ceramic tiles was lowered to 100° C. or less (S400). And after secondary firing of the cooled ceramic tile at 1100 ° C (S500), a glaze pigment mixture (mixing 70 to 100 parts by weight of ceramic powder with respect to 100 parts by weight of the glaze pigment) is added to the secondary fired ceramic tile. After coating (S600), the ceramic tile coated with the glaze pigment mixture was gradually heated to 800 ° C for 900 minutes using a firing machine, and when it reached 800 ° C, the temperature was maintained for 65 minutes to produce a third firing (S700). .

(Example 4)

After the modeling soil was put into a kneading machine and kneaded and kneaded (S100), a ceramic tile was molded using this and dried using a dryer (S200). Then, the molded and dried ceramic tile was first fired at 820° C. using a firing machine (S300), and then cooled until the temperature of the primarily fired ceramic tile was lowered to 100° C. or less (S400). And after secondary firing of the cooled ceramic tiles at 1150 ° C (S500), a glaze pigment mixture (mixing 70 to 100 parts by weight of activated carbon powder with respect to 100 parts by weight of the glaze pigment) is added to the secondary fired ceramic tiles. After coating (S600), the ceramic tile coated with the glaze pigment mixture was gradually heated to 820 ° C for 1,000 minutes using a firing machine, and when it reached 820 ° C, the temperature was maintained for 60 minutes to produce a third firing (S700). .

(Example 5)

After the modeling soil was put into a kneading machine and kneaded and kneaded (S100), a ceramic tile was molded using this and dried using a dryer (S200). Then, the molded and dried ceramic tiles were first fired at 800° C. using a firing machine (S300), and then cooled until the temperature of the primarily fired ceramic tiles was lowered to 100° C. or less (S400). And after the cooled ceramic tile is fired secondarily at 1100 ° C (S500), a glaze pigment mixture (mixing 1.0 to 1.5 parts by weight of photocatalyst powder with respect to 100 parts by weight of the glaze pigment) is added to the secondly fired ceramic tile. After coating (S600), the ceramic tile coated with the glaze pigment mixture was gradually heated to 800 ° C for 900 minutes using a firing machine, and when it reached 800 ° C, the temperature was maintained for 65 minutes to produce a third firing (S700). .

(Comparative Example 1)

It was prepared in the same way as in Example 1, but the illite powder was not added.

(Comparative Example 2)

It was prepared in the same way as in Example 2, but the germanium powder was not added.

(Comparative Example 3)

It was prepared in the same way as in Example 3, but no ceramic powder was added.

(Comparative Example 4)

It was prepared in the same way as in Example 4, but activated carbon powder was not added.

(Comparative Example 5)

It was prepared in the same manner as in Example 5, but photocatalyst powder was not added.

2. Evaluation of ceramic tiles

(1) antibacterial

After preparing a test piece by cutting the ceramic tile according to Examples and Comparative Examples into a square of 50 ± 2 mm, the test piece was placed in a sterilized Petri dish and Staphylococcus aureus ATCC 6538 and Escherichia coli ATCC 8739 were tested for 13 After inoculation at a concentration of × 10 ⁵ , a coating film was overlaid to prevent drying, and the lid of the Petri dish was closed. After inoculation, immediately extract and dilute 10ml to measure the initial number of bacteria, incubate for 24± 1 hour under standard test conditions (35±1℃, RH90±5%), extract 10ml again, dilute and measure the number of bacteria (Test standard: JIS Z 2801). The number of bacteria measured in this way was counted and calculated according to [Equation 1] below to obtain a bacterial reduction rate, and the results are shown in [Table 1] below.

[Equation 1]

Bacterial reduction rate (%) = 100 (Mb-Mc)/Mb

Mb: the number of bacteria in the control after incubation

Mc: number of bacteria in the specimen after incubation

(2) Deodorizing

After preparing a test piece by cutting the ceramic tile according to Examples and Comparative Examples into a square of 50 × 150 mm, putting it in a container and injecting 500 ppm of ammonia gas to test the deodorization rate (test standard: KFIA-FI-1004). At this time, the result was evaluated for the deodorization rate by measuring the gas concentration using a gas detection tube after 120 minutes, and the results are shown in [Table 1] below.

division Bacterial reduction rate (%) Deodorization rate (%) Example 1 99.9 88.4 Example 2 99.9 87.2 Example 3 99.9 86.4 Example 4 99.9 88.2 Example 5 99.9 87.4 Comparative Example 1 no antibacterial 10.2 Comparative Example 2 no antibacterial 7.8 Comparative Example 3 no antibacterial 11.6 Comparative Example 4 no antibacterial 9.2 Comparative Example 5 no antibacterial 8.8

As shown in [Table 1], it can be seen that the ceramic tile according to the embodiment of the present invention has excellent antibacterial and deodorizing functions compared to the comparative example as the antibacterial and deodorizing functions are efficiently implemented.

As described above, the method of manufacturing a ceramic tile having antibacterial and deodorizing properties according to the present invention and the ceramic tile manufactured by this method are described through the above preferred embodiments and their excellence was confirmed, but the related technical field Those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention described in the claims below.

Claims (5)

In the manufacturing method of ceramic tile,
Drilling the modeling soil (S100);
Forming and drying a ceramic tile using the ground modeling soil (S200);
Primary firing of the molded and dried ceramic tile (S300);
Cooling the first fired ceramic tile (S400);
Secondarily firing the cooled ceramic tiles (S500);
Applying a glaze pigment mixture to the secondly fired ceramic tile (S600); and
A method of manufacturing a ceramic tile having antibacterial and deodorizing properties, comprising the step of thirdly firing the ceramic tile to which the glaze pigment mixture is applied (S700).
According to claim 1,
The first firing is fired at 800 ~ 820 ℃,
The secondary firing is a method of manufacturing a ceramic tile having antibacterial and deodorizing properties, characterized in that firing at 1100 ~ 1150 ℃.
According to claim 1,
The third firing,
Pottery with antibacterial and deodorizing properties, characterized by firing while gradually increasing the temperature for 900 to 1,000 minutes, firing by raising the temperature to 800 to 820 ° C, and maintaining the temperature for 60 to 65 minutes when reaching 800 to 820 ° C A method of manufacturing quality tiles.
According to claim 1,
The glaze pigment mixture,
It is made by mixing 70 to 100 parts by weight of illite powder with respect to 100 parts by weight of the glaze pigment,
Or, it is made by mixing 70 to 100 parts by weight of germanium powder with respect to 100 parts by weight of the glaze pigment,
Or it is made by mixing 70 to 100 parts by weight of ceramic powder with respect to 100 parts by weight of the glaze pigment,
Or, based on 100 parts by weight of the glaze, 70 to 100 parts by weight of activated carbon powder is mixed,
Or, based on 100 parts by weight of the glaze pigment, 1.0 to 1.5 parts by weight of the photocatalyst powder is mixed.
A ceramic tile manufactured by the manufacturing method according to claim 1.

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