KR200322522Y1 - Luminous tile - Google Patents

Abstract

The present invention relates to a luminous tile including a photoluminescent material and a method of manufacturing the same, wherein a luminous glaze powder including a photoluminescent phosphor containing a MAl ₂ O ₄ compound (M is a metal) as a mother crystal or The luminous tiles of the present invention, which are made by filling and firing them, can be manufactured by a dry method so that the manufacturing process is simple, mass production by process automation is possible, and the firing temperature can be raised to a high temperature. Incontinence does not occur.

Description

Luminous tile

The present invention relates to a luminous tile including a photoluminescent material and a method of manufacturing the same, and more particularly to a luminous glaze powder including a photoluminescent phosphor containing a MAl ₂ O ₄ compound (M is a metal) as a mother crystal. The present invention provides a luminous tile prepared by coating or filling a tile and firing the same, and a method of manufacturing the luminous tile by a dry method.

In general, tiles have excellent physical properties such as durability, water resistance, and abrasion resistance, and are relatively easy to construct and hardly cause cracks or discoloration after construction. I am getting it.

However, the tile has the disadvantage that the structure or appearance can not be seen because the appearance is not exposed in the dark without light.

On the other hand, when there is no internal power supply of the underground building or building in case of emergency, there is a possibility that it may lead to a large accident because there is no means for displaying an emergency escape route.

Various types of luminous signs are now known, and they have been installed using a luminous paint or a plastic material having such properties, such as luminous tape or a sticker or an acrylic plate, on a specific base. These signs have the disadvantage that the light emitting effect after the disappearance of the light does not last for a long time, and burned in the fire can not function properly. In addition, when the conventional signs are installed on the floor, they are worn for a short time after being installed and lose the luminous effect. Due to this drawback, in order to maintain the conventional luminous signs must be frequently repaired, which is expensive to maintain.

Accordingly, the present inventors have completed the present invention by developing a method of manufacturing a luminous tile that can shine for a long time in the dark with excellent durability by a dry method.

An object of the present invention is to provide a luminous tile that can emit light in the dark for a long time and a method of manufacturing the same by a dry method.

1A is a perspective view of a grooved tile;

Figure 1b is a perspective view showing a state in which the luminous glaze powder is filled in the groove of the tile of Figure 1a.

Figure 2a is a perspective view showing a flat top surface tile.

Figure 2b is a perspective view showing a state in which the luminous glaze powder is applied to the upper surface of the tile of Figure 2a.

3 is a photograph taken the luminous tiles of the present invention in bright light,

4 is a photograph taken the luminous tiles of FIG. 3 in a dark place.

Figure 5 is a graph showing the result of measuring the afterglow luminance of the luminous tiles prepared in the present invention.

<Description of the code | symbol about the main code of the drawing>

10: grooved tile 12: groove

14 flat tiles 20, 21 luminous glaze powder

In order to achieve the above object, in the present invention, a luminous glaze powder in which dry light is mixed with a phosphorescent phosphor containing MAl ₂ O ₄ compound (M is a metal) and frit is applied to a tile or filled, and then fired. It provides a luminous tile and a method for producing a luminous tile by a dry method.

The present invention first provides a luminous glaze powder composed of a luminous glaze powder provided in a specific shape on the upper surface of the tile, and a frit applied on the tile and the luminous glaze powder.

In this case, the tile may include a groove provided in a specific shape, and may be a form in which the luminous glaze powder is filled in the groove, or may be in a form in which the luminous glaze powder is coated on a flat tile in a specific shape.

Specifically, the luminous tile of the present invention includes a groove 12 provided in a specific shape on an upper surface of the tile 10, and includes a form in which the luminous glaze powder 20 is filled in the groove 12. (See FIGS. 1A and 1B).

In addition, the luminous tile of the present invention includes a form in which the luminous glaze powder 21 is applied to the top surface of the flat tile 14 (see FIGS. 2A and 2B).

The frit applied on the tile is applied to cover the luminous glaze powder 20, 21, and fired at a high temperature so that the glaze powder and the frit are dissolved and integrated with the tile.

First, the luminous glaze powder used in the present invention is produced by dry mixing 50 to 90% by weight of a phosphorescent phosphor containing a MAl ₂ O ₄ compound and 10 to 50% by weight of frit as a mother crystal.

M is (i) calcium (Ca), strontium (Sr), barium (Ba) or an alloy thereof or (ii) an alloy of the metal of (i) with magnesium (Mg).

In addition, the phosphorescent phosphor further includes an activator and a activator, Europium (Eu) as the activator, Ce (Ce), Praseodymium (Pr), Neodymium (Nd), Samarium (Sm), Dis Preference is given to using pyrosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb) or lutetium (Lu).

The photoluminescent phosphor has a property of accumulating light and emitting light in a dark place. In an embodiment of the present invention, the photoluminescent phosphor satisfies the above conditions, and has excellent light resistance and long afterglow characteristics. Gaji Luminova is a product of Stone Nemoto Co., Ltd. (LumiNova ) Was used.

Pretran is a commercial mixture obtained by calcining silica and a soluble flux and then pulverizing it, and refers to a material that is pre-melted into a glass state and then pulverized again.

In the embodiment of the present invention, the frit (product made by Hyewang Ceramics Co., Ltd.) for 800 ° C. is pulverized (200 mesh) and dried to form particles of a predetermined size (60 mesh), and mixed with the photoluminescent phosphor at a predetermined ratio to luminous glaze. Powder was prepared.

The luminous tile of the present invention is characterized by being manufactured by a dry method of applying or filling a luminous glaze to a tile in powder form, and by using a dry method, the luminous glaze powder is coated onto a flat tile according to the use of the tile. It may be prepared by applying a desired pattern, or may be manufactured by filling a groove with a specific shape and then filling the luminous glaze powder into the groove.

The method of manufacturing the luminous tile of the present invention is slightly different depending on whether the luminous glaze powder is applied on the flat tile or the groove is filled into the groove of the fine tile.

The method for preparing the luminous glaze powder into the grooves of the grooved tile specifically includes the following steps:

(a) preparing a grooved tile having a specific shape;

(b) filling the groove with a luminous glaze powder prepared by dry mixing 50 to 90% by weight of the photoluminescent phosphor and 10 to 50% by weight of frit containing a compound represented by MAl ₂ O ₄ as a mother crystal; ;

(c) applying frit over the area filled with the luminous glaze powder;

(d) calcining the frit coated tile at a temperature of 600 to 1200 ° C.

In the step (a), the groove of a specific shape means that the grooves of the shape corresponding to the various patterns or display symbols are dug into the tile, and this portion is formed by forming the grooves of the decorative pattern or the various symbol marks. In order to fill the luminous glaze into the grooved tiles are prepared in advance.

The groove having a specific shape as described above may be formed by cast molding or engraving, and the depth of the groove is preferably formed to a depth of 0.3 to 2 mm.

In the step (b), the luminous glaze in dry powder form is filled into the grooves of the tile prepared in the step (a). In this case, the filling may be done manually, but since the luminous glaze is in the form of dry powder, a silk screen device is used. Can be done. Conventionally, when using liquid glaze, manual work was performed by hand, and by using dry powder glaze, it was possible to perform automated work by a machine.

In the step (c), to protect the filled luminous glaze powder part, the frit is applied to an area that covers the filling part, and the frit used is a low temperature frit or 900 which can be used at a temperature of 600 to 900 ° C. Any high temperature frit usable at a temperature of ˜1200 ° C. is possible. In the conventional wet method using liquid glaze, there is a problem in that high temperature frit cannot be used and low temperature firing can be performed, which makes it difficult to improve the wear resistance of the tile. In the present invention, a high temperature frit can be used by using a dry method. The wear resistance of the tile can be improved.

In the embodiment of the present invention, frit used in step (c) is Vetrosa manufactured by Korean Ceramics Co., Ltd. (For Vetrosa, 830 ° C and 950 ° C), which is a frit in the form of a grain of about 0.1 to 0.32 mm in size.

In the step (d), the luminous tile is manufactured by baking the tile coated with the frit at a high temperature of 600 to 1200 ° C. for about 30 to 80 minutes, and if the frit used in the step (c) is a low temperature frit, It is possible to bake at high temperature as long as it is a frit for high temperature. However, it is preferable to bake at a high temperature of 900 ~ 1200 ℃ to improve the wear resistance of the tile.

Tiles prepared by filling the luminous glaze powder in the grooves of the tiles as described above are used in the floor tiles, etc., which require relatively wear resistance since the luminous glaze is filled in the tiles.

On the other hand, the method of manufacturing by applying the luminous glaze powder on a flat tile specifically comprises the following steps:

(a) preparing a seamless flat tile;

(b) a specific shape of a luminous glaze powder prepared by dry mixing 50 to 90% by weight of a phosphorescent phosphor and 10 to 50% by weight of a frit containing a compound represented by MAl ₂ O ₄ (M is a metal) as a mother crystal; Applying onto the tile with;

(c) applying frit over the area where the luminous glaze powder of the tile is applied;

(d) calcining the frit coated tile at a temperature of 600 to 1200 ° C.

In the above process, instead of filling the luminous glaze powder into the grooves of the grooved tile, the luminous glaze powder is coated onto the flat tile in a desired shape to manufacture the luminous tiles of the present invention.

That is, in the step (b), the luminous glaze powder is placed on the flat tile according to various patterns or sign symbols by the silk screen method, wherein the coating thickness of the glaze powder depends on the thickness of the mesh used for the silk screen. Is determined. It is preferable that application | coating thickness is about 0.3-1.5 mm at this time.

When the luminous glaze powder is applied in the above-described manner, the area to which the luminous glaze powder is applied is protruded by the thickness of the coating compared to the flat tile, and thus, the tile manufactured by this method has a relatively low demand for wear resistance and the like. It is suitable for wall tile manufacture.

Steps (c) and (d) are the same as those of using the grooved tile described above.

Hereinafter, the present invention will be described in detail by examples. However, the examples are merely to illustrate the invention is not limited by the following examples.

Production Examples 1-4. Preparation of Luminous Glaze Powder

In order to prepare the luminous glaze powder of the present invention, the photoluminescent phosphor is Luminova, a product of Stone Nemoto Co., Ltd., which contains SrAl ₂ O ₄ as a mother crystal. (LumiNova ) Was used, and the frit for 800 ° C frit (manufactured by Hae Kwang Ceramics Co., Ltd.) was pulverized (200 mesh) and dried to prepare particles of a predetermined size (60 mesh).

The luminous phosphor powder and frit powder were mixed in the ratio as shown in Table 1 below to prepare a luminous glaze powder for use in the present invention.

TABLE 1

Photoluminescent phosphor (% by weight) Frit (% by weight) Preparation Example 1 90 10 Preparation Example 2 80 20 Preparation Example 3 70 30 Preparation Example 4 60 40

Examples 1-5. Manufacture of floor tiles

The tile raw material powder was molded into a patterned mold as shown in FIG. 3 to prepare an arrow-shaped grooved tile. Here, the luminous glaze powder prepared in Preparation Examples 1 to 4 was filled using a silk screen apparatus, and fired at a temperature of 600 to 1200 ° C. to prepare a floor tile of the present invention. 3 and 4 show photographs of the tiles thus prepared in bright and dark places.

Specific tile preparation examples according to the depth of the grooves and the luminous glaze powder used are shown in Table 2 below.

TABLE 2

Example Classification Depth of groove (mm) Used luminous glaze powder Firing temperature and firing time Example 1 1-1 0.3 Preparation Example 1 700 ℃ / 40 minutes 1-2 Preparation Example 2 720 ℃ / 50 minutes 1-3 Preparation Example 3 860 ℃ / 60 minutes 1-4 Preparation Example 4 950 ℃ / 60 minutes 1-5 Preparation Example 4 1050 ℃ / 60 minutes Example 2 2-1 0.7 Preparation Example 1 700 ℃ / 40 minutes 2-2 Preparation Example 2 720 ℃ / 50 minutes 2-3 Preparation Example 3 860 ℃ / 60 minutes 2-4 Preparation Example 4 950 ℃ / 60 minutes 2-5 Preparation Example 4 1050 ℃ / 60 minutes Example 3 3-1 1.1 Preparation Example 1 700 ℃ / 40 minutes 3-2 Preparation Example 2 720 ℃ / 50 minutes 3-3 Preparation Example 3 860 ℃ / 60 minutes 3-4 Preparation Example 4 950 ℃ / 60 minutes 3-5 Preparation Example 4 1050 ℃ / 60 minutes Example 4 4-1 1.6 Preparation Example 1 700 ℃ / 40 minutes 4-2 Preparation Example 2 720 ℃ / 50 minutes 4-3 Preparation Example 3 860 ℃ / 60 minutes 4-4 Preparation Example 4 950 ℃ / 60 minutes 4-5 Preparation Example 4 1050 ℃ / 60 minutes Example 5 5-1 2.0 Preparation Example 1 700 ℃ / 40 minutes 5-2 Preparation Example 2 720 ℃ / 50 minutes 5-3 Preparation Example 3 860 ℃ / 60 minutes 5-4 Preparation Example 4 950 ℃ / 60 minutes 5-5 Preparation Example 4 1050 ℃ / 60 minutes

Examples 6-9. Manufacture of wall tiles

Prepare a flat patternless tile, apply the luminous glaze powder prepared in Preparation Examples 1 to 4 on the top of the tile to a pattern as shown in Figure 3 using a silk screen device, at a temperature of 600 ~ 1200 ℃ Firing produced the wall tiles of the present invention.

Specific tile preparation examples according to the coating thickness and the luminous glaze powder used are shown in Table 3 below.

TABLE 3

Example Classification Depth of groove (mm) Used luminous glaze powder Firing temperature and firing time Example 6 6-1 0.3 Preparation Example 1 700 ℃ / 40 minutes 6-2 Preparation Example 2 720 ℃ / 50 minutes 6-3 Preparation Example 3 860 ℃ / 60 minutes 6-4 Preparation Example 4 950 ℃ / 60 minutes 6-5 Preparation Example 4 1050 ℃ / 60 minutes Example 7 7-1 0.7 Preparation Example 1 700 ℃ / 40 minutes 7-2 Preparation Example 2 720 ℃ / 50 minutes 7-3 Preparation Example 3 860 ℃ / 60 minutes 7-4 Preparation Example 4 950 ℃ / 60 minutes 7-5 Preparation Example 4 1050 ℃ / 60 minutes Example 8 8-1 1.1 Preparation Example 1 700 ℃ / 40 minutes 8-2 Preparation Example 2 720 ℃ / 50 minutes 8-3 Preparation Example 3 860 ℃ / 60 minutes 8-4 Preparation Example 4 950 ℃ / 60 minutes 8-5 Preparation Example 4 1050 ℃ / 60 minutes Example 9 9-1 1.5 Preparation Example 1 700 ℃ / 40 minutes 9-2 Preparation Example 2 720 ℃ / 50 minutes 9-3 Preparation Example 3 860 ℃ / 60 minutes 9-4 Preparation Example 4 950 ℃ / 60 minutes 9-5 Preparation Example 4 1050 ℃ / 60 minutes

Experimental Example 1. Afterglow luminance measurement test of the subject innovation tile

The afterglow luminance test of the luminous tiles manufactured in the above example is shown in Table 4 and FIG. 5.

The afterglow luminance of Table 4 was measured by dividing 25W fluorescent light at a distance of 20 cm from the luminous tile for 20 minutes with a diopter of 2 ° of Luminometer TOPCON BM-8 lens of Uksung Chemical Co., Ltd. It was carried out at a temperature of ℃.

TABLE 4

Elapsed time (minutes) Afterglow luminance (mcd / ㎡) Example 4-3 Example 3-3 Example 2-3 Example 5-3 Example 7-3 Initial (0) 12,050 11,620 11,000 12,400 9,030 2 8,830 8,410 8,050 9,080 6,590 4 6,800 6,460 6,200 7,010 5,070 6 5,250 4,980 4,780 5,400 3,900 8 3,890 3,690 3,540 4,000 2,890 10 2,410 2,290 2,210 2,490 1,790 20 1,280 1,210 1,180 1,320 950 30 855 820 810 890 630 60 670 720 640 710 500 120 560 540 530 590 415 180 450 440 430 480 340 240 300 290 283 320 230 300 200 193 190 220 151 360 115 110 103 130 86 420 90 84 80 100 65 480 70 63 60 80 50 540 40 37 33 48 24 600 30 27 24 36 18 660 15 13 10 18 8 720 8 6 5 9 3

As can be seen in Table 4, the luminous tile of the present invention showed excellent afterglow luminance over 100 mcd / m 2 after 5 hours after the light was blocked even when irradiated with a fluorescent lamp for only 20 minutes. After 12 hours, the luminance was maintained at least 3 mcd / m 2.

As described above, the luminous tiles according to the present invention have a photoluminescent property that emits light in the dark, so that in the event of no power being supplied to the inside of a building, the luminous tile may have a great effect as a sign and may be used as an advertising substitute. In this case, economic effects such as power saving can be obtained. In addition, the field of application is very large, such as can be used for decorative tiles and the display of the driving line of the road.

In particular, because the luminous tiles of the present invention are manufactured by a dry method, the manufacturing process is simple, not only mass production by process automation is easy, but also the firing temperature can be raised to a high temperature, and Incontinence does not occur.

Claims (12)

In the tile, Luminous glaze powder provided in a specific shape on the upper surface of the tile, Luminous tile comprising a frit applied on the tile and the luminous glaze powder. The method of claim 1, The tile includes a groove provided in a specific shape, the luminous glaze powder is characterized in that the luminous tile is filled in the groove. The method of claim 2, The groove is luminous tile, characterized in that it has a shape for making a variety of patterns or signs. The method of claim 2, The depth of the groove is luminous tile, characterized in that 0.3 to 2 mm. The method of claim 1, The luminous glaze powder is luminous tiles, characterized in that applied to a specific shape on the flat tile. The method of claim 5, The luminous tile, characterized in that the coating thickness of the luminous glaze powder applied on the flat tile is 0.3 to 1.5 mm. The method according to claim 2 or 5, The luminous tile, characterized in that the filling or application is performed by a silk screen method. The method of claim 1, The frit is applied on the luminous glaze powder provided on the tile, and fired at a temperature of 600 ~ 1200 ℃, the glaze powder and frit are dissolved and integrated with the tile. The method of claim 1, The luminous glaze powder is characterized by dry mixing 50 to 90% by weight of the phosphorescent phosphor and 10 to 50% by weight frit containing a compound represented by MAl ₂ O ₄ (M is a metal) as a mother crystal. Luminous tiles. The method of claim 9, M is a luminous tile, characterized in that selected from calcium (Ca), strontium (Sr), barium (Ba) and alloys thereof. The method of claim 10, M is a luminous tile, characterized in that the alloy of magnesium (Mg) and metal selected from calcium (Ca), strontium (Sr), barium (Ba) and alloys thereof. The method of claim 9, The photoluminescent phosphor is europium (Eu) as an activator, cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), disspirium (Dy), holmium (Ho), erbium ( A luminous tile comprising at least one selected from the group consisting of Er), thulium (Tm), ytterbium (Yb) and lutetium (Lu).