JP2914136B2 - Unfired tile and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unfired tile having a suitable hardness and excellent walking feeling, which can be obtained without firing a molded product, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, tiles provided as various types of interior / exterior tiles are generally so-called fired tiles obtained by molding, drying and firing the raw materials.

[0003]

Since fired tiles are baked and baked, they have a high hardness. For example, when laid as a road surface tile or the like, they have a large reverberant sound due to walking, have a poor walking feeling, and are apt to be tired. There are drawbacks.

[0004] In contrast, non-fired tiles that are not fired can have relatively low hardness and are considered to improve the above-mentioned disadvantages. In the case of non-fired tiles, the production cost can be reduced by eliminating the firing step.

The present invention has been made in view of the above-mentioned circumstances, and provides an unfired tile having an appropriate hardness and excellent walking feeling, which can be obtained without firing a molded body, and a method of manufacturing the same. With the goal.

[0006]

According to the first aspect of the present invention, there is provided an unfired tile comprising 5 to 70% by weight of clay and 15 to 80% of calcium hydroxide.
% By weight and silica-based mineral particles 10 having a particle size of 1 to 5 mm
100 parts by weight of a tile raw material containing up to 80% by weight,
The mixture of about 30 parts by weight is dried and cured after dry press molding.

[0007] The non-fired tile according to claim 2 is characterized in that clay 5 to 70 is used.
% By weight, 15 to 80% by weight of calcium hydroxide, and granules
Dry press molding a mixture of 100 parts by weight of a tile raw material containing 10 to 80% by weight of silica-based mineral particles having a diameter of 1 to 5 mm, 3 parts by weight or less of plant fiber, and 15 to 30 parts by weight of water, followed by drying and curing. It is.

The method for producing an unfired tile according to claim 3 is characterized in that the clay is 5-70% by weight, the calcium hydroxide is 15-80% by weight, and the silica-based mineral particles 10-8 having a particle size of 1-5 mm.
100 parts by weight of a tile raw material containing 0% by weight, and 15 to 3 parts of water
And 0 parts by weight, and the resulting mixture is dry-press molded, dried and cured.

According to a fourth aspect of the present invention, there is provided a method for producing a non-fired tile, wherein clay is 5 to 70% by weight, calcium hydroxide is 15 to 80% by weight, and silica mineral particles 10 to 8 having a particle size of 1 to 5 mm.
100 parts by weight of a tile raw material containing 0% by weight,
It is characterized in that the mixture is stirred and mixed with not more than 15 parts by weight of water and 15 to 30 parts by weight of water, and the resulting mixture is dry-press molded, dried and cured.

Hereinafter, the present invention will be described in detail.

In order to produce the unfired tile of the present invention, first, 100 parts by weight of a raw material having the following composition and 15 to 30 parts by weight, preferably 20 to 25 parts by weight, of water are sufficiently stirred with an Erich mixer or the like. Mix.

[0012] raw material formulation (wt%) Clay: 5 to 70 Calcium hydroxide: 15-80 silica mineral particles: 10 to 80 out of the raw material, clay, feel soil unfired tiles, in order to impart the appearance The color and texture of the resulting unfired tile can be changed depending on the type and amount of clay used.

Calcium hydroxide and silica-based mineral particles are formed by the reaction between Ca (OH) ₂ and SiO ₂ in the mineral.
It is blended in order to obtain sufficient strength, and it is practical to use plaster as calcium hydroxide. Examples of the silica-based mineral particles include silica sand, fly ash, slag, shirasu, silica fume, diatomaceous earth, activated clay, and the like. Of these, silica sand is particularly preferred. Silica-based mineral particles such as silica sand have good appearance in the appearance of unfired tiles and large natural particles can be obtained when the coarse particles have large particle diameters.
H) Reactivity with ₂ may be low, resulting in insufficient strength. Conversely, if the particle size is small, Ca (OH)
The reactivity with No. ₂ is good, and the strength of the obtained unfired tile is high, but the design property is slightly inferior. Therefore,
The silica-based mineral particles, Ru have <br/> use those having a particle size of 1 to 5 m m.

In the present invention, the design of the resulting unfired tile can be further improved by blending vegetable fibers with these raw materials. Various types of susa (straw), hemp, pulp, and the like can be used as the plant fiber, and the blending amount is preferably 3 parts by weight or less based on 100 parts by weight of the blending raw material.

For the purpose of improving the strength of the obtained unfired tile, 20 parts by weight of
Less than 3 parts by weight of cement, less than 3 parts by weight of glue, for example, natural glue, methylcellulose, carbonylmethylcellulose, synthetic resin emulsion, etc. may be blended. Furthermore, the color tone of the unfired tile obtained by blending the pigment can be changed.

The mixture obtained by stirring and mixing the raw material and water is then subjected to dry press molding at a pressure of 200 kg / cm ² or more, and the obtained molded body is dried and cured. If the drying temperature is too high, problems such as blackening of the susa and the like contained therein occur, so it is preferable to perform the drying at about 80 to 120 ° C. The drying time is appropriately determined according to the drying temperature, and is usually about 2 to 24 hours.

Curing after drying may be either natural curing or accelerated curing with an autoclave. In the case of natural curing, it is preferable to carry out for 1 month or more, especially 2 months or more,
In the case of autoclave curing, it is preferable to carry out at 110 ° C. or more for 1 hour or more. With this curing, as described above,
Ca (OH) ₂ reacts with SiO ₂ in the silica-based mineral particles to obtain sufficient strength.

After curing, if necessary, it is further heated at 40 ° C. for 24 hours.
The product is dried by drying for about an hour.

[0019]

According to the present invention, an unfired tile having a sufficiently high strength is provided by the reaction between Ca (OH) ₂ and SiO ₂ in the compounding raw material without firing. Since the non-fired tile of the present invention is not fired by firing, it is softer than the fired tile and has an appropriate hardness. For this reason, no sound is produced by walking, and the feeling during walking is good. Moreover, since the water absorption is high, the surface is hard to slip.

[0020] Further, by mixing clay, the clay has the feel and appearance of soil and is rich in natural feeling. Various colors and textures can be produced depending on the clay used, and the design is rich.

In particular, by blending the plant fiber with the raw material, a unique pattern is given by the fiber, and the design is further improved.

[0022]

The present invention will be described more specifically with reference to the following examples.

Example 1 0.1 parts by weight of Susa and 20 parts by weight of water were added to 100 parts by weight of a raw material having the following composition, followed by stirring and mixing with an Erich mixer. Raw material composition (% by weight) Clay: 45.5 Plaster: 35 Silica sand (average particle size: 3 mm): 19.5 The obtained mixture is dry-press-molded at 250 kg / cm ² , and the molded body is dried at 80 ° C. for 24 hours. After that, the mixture was subjected to autoclave curing at 150 ° C. for 2 hours and further dried at 40 ° C. for 24 hours to obtain an unfired tile.

The obtained unfired tile is softer than a normal fired tile, has an appropriate hardness, and
The tiles were rich in texture and feel of natural soil. When a walking test was performed on the tile floor surface on which the unfired tile was laid, there was almost no reverberation due to walking, the feel of the shoe sole was good, and the walking feeling was extremely excellent. In addition, the tile floor surface seemed like the ground at first glance, and was in harmony with the surrounding natural environment, and was extremely excellent in appearance.

[0025]

As described above in detail, according to the non-fired tile and the method of manufacturing the same of the present invention, the tile has an appropriate hardness and almost no echo when walking. Good feeling and excellent walking sensation. Relatively high water absorption and non-slip. It is rich in taste and naturalness, harmonizes well with the surrounding natural environment, and has excellent aesthetics. Various colors and textures can be obtained by changing the type and proportion of the clay to be compounded, and the design is rich. Unfired tiles having such excellent features as described above are provided. Moreover, since the non-fired tile of the present invention does not perform firing, it can be provided at low cost by reducing the cost of fired fuel.

In particular, according to the second and fourth aspects, there is provided an unfired tile which is more excellent in design.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) C04B 28/18 C04B 7/13

Claims (4)

(57) [Claims] 1. A tile raw material containing 100 parts by weight of 5-70% by weight of clay, 15-80% by weight of calcium hydroxide, and 10-80% by weight of silica-based mineral particles having a particle size of 1-5 mm; An unfired tile obtained by dry-pressing a mixture with 30 parts by weight, followed by drying and curing. 2. 100 parts by weight of a tile raw material containing 5 to 70% by weight of clay, 15 to 80% by weight of calcium hydroxide, and 10 to 80% by weight of silica-based mineral particles having a particle size of 1 to 5 mm; An unfired tile obtained by dry-pressing a mixture of 15 to 30 parts by weight of water and 15 to 30 parts by weight of water, followed by drying and curing. 3. 100 parts by weight of a tile raw material containing 5 to 70% by weight of clay, 15 to 80% by weight of calcium hydroxide, and 10 to 80% by weight of silica-based mineral particles having a particle size of 1 to 5 mm; A method for producing an unfired tile, comprising stirring and mixing 30 parts by weight of the mixture, dry-pressing the resulting mixture, and then drying and curing. 4. 100 parts by weight of a tile raw material containing 5 to 70% by weight of clay, 15 to 80% by weight of calcium hydroxide, and 10 to 80% by weight of silica-based mineral particles having a particle size of 1 to 5 mm; Parts by weight or less and 15 to 30 parts by weight of water are stirred and mixed, and the obtained mixture is subjected to dry press molding,
A method for producing an unfired tile, comprising drying and curing.