JPS59172557A - Sand coat material and production thereof - Google Patents

Abstract

PURPOSE:To obtain a sand coat material having excellent workability, beauties, granular appearance, etc., by forming a colored layer contg. a pigment and an org. adhesive on the surface of a granular aggregate, forming an anti-blocking material layer thereon and incorporating the resulting colored processed aggregate. CONSTITUTION:A colored paste contg. a pigment (e.g. red oxide), an extender pigment (e.g. titanium oxide) and an org. adhesive (e.g. acrylic synthetic resin emulsion) is added to a granulated aggregate having a particle size of 10- 80 mesh, such as silica sand, rubble, ground synthetic resin or inorg. granule. The mixture is stirred to deposit the colored paste on the surface of the aggregate. While the deposited colored paste is still in a wetted state, an anti- blocking material (e.g. talc) is mixed therewith, and the mixture is dried to prepare a colored processed aggregate. CMC, a synthetic resin emulsion, etc. are blended with the colored aggregate, and the mixture is kneaded with an appropriate amount of water to obtain the desired sand coated material.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sand wall material and a method for manufacturing the same. An object of the present invention is to provide a sand wall material containing colored processed aggregate that has favorable workability and excellent graininess and aesthetic appearance. Another object of the present invention is to provide a method for producing a sand wall material that allows the colored aggregate to be obtained in a short time and without forming it into plates or blocks.

Conventionally known sand wall materials include colored processed aggregates in which a colored layer is formed on the surface of granular aggregates such as crushed stone, crushed stone, kansui stone, inorganic granules, synthetic resin granules, and synthetic resin granules. It is something that In Part 1-, this colored processed aggregate is produced by stirring the granular aggregate, pigment, extender pigment, and organic adhesive at the same time and drying. Cal, this sand wall material is
If the granular aggregate has acute angular protrusions, the acute angular protrusions will engage the trowel surface, significantly impeding the elongation of the trowel during coating, and causing the finished surface to be scratched and aesthetically pleasing. It was difficult to form a rich wall surface. This improvement of depression has already been proposed in Japanese Patent Publication No. 57-30829. That is, in this invention, the above-mentioned drawbacks are solved by wearing away the acute-angled protrusions of the granular aggregate. However, in the colored processed aggregate obtained by this invention, fine powder generated during abrasion gets mixed into the colored layer, resulting in a dirty finish due to the color tone, and depending on the type, the particle size of the granular aggregate decreases due to abrasion. It became clear that there was another problem: the sand was too fine, making it difficult to express the granular feel characteristic of sand walls. In addition, it has been found that the colored aggregate contained in the conventional sand wall materials described above has the following difference in manufacturing method.

(1) Coloring process: Pigments, extender pigments, and organic adhesives are colored at the same time as the granular aggregate without being mixed in advance, so the surface of the granular aggregate is uniformly colored. In order to form a colored layer, long-time stirring is required. This not only requires a large amount of energy, but also impairs the stability of the organic adhesive, causing pigments, extender pigments, and organic adhesives that have already adhered to fall off during stirring6. However, extender pigments and organic adhesives do not adhere effectively to the surface of the granular aggregate, but instead adhere to the stirrer or form aggregates. Therefore, not only are pigments, extender pigments, and organic adhesives used in vain, but the agitator is also contaminated, requiring a great deal of effort when changing the color tone of the colored layer.

(2) Drying process: In the conventional methods for manufacturing sand wall materials described above, methods of drying while moving the material to be dried, such as flash drying and fluidized drying, cannot be adopted.

The reason for this is that when these drying methods are adopted, pigments, extender pigments, and organic adhesives attached to the surface of the granular aggregate fall off due to the movement of the granular aggregate, which is not only wasted, but also causes the colored processed aggregate to deteriorate. This is because it impairs the aesthetic appearance of the product, it also stains the dryer and requires a lot of effort when changing the color tone of the colored layer. Therefore, it is necessary to use a dryer that can dry the material to be dried without moving it, such as a box-type or continuous band-type ventilation dryer, which has poor drying efficiency.

In this case, due to the presence of the organic adhesive, adjacent granular aggregates adhere to each other and form plates or blocks [7] Since granules cannot be obtained, it is necessary to crush them. Therefore,
In the invention described in the above-mentioned Japanese Patent Publication No. 57-30829, 11<, if the acute protrusions of the granular aggregate are worn out during stirring, 1. However, new sharp-angled protrusions are formed, significantly reducing workability during troweling, and the surface of the granular aggregate is exposed (-), resulting in poor cosmetic performance.

As a result of extensive research in view of the above circumstances, the present inventor has found that
Solve the above problems 1. This led to the completion of a new sand wall material and its manufacturing method.

That is, in the sand wall material according to the present invention, a colored layer containing a pigment, an extender pigment, and an organic adhesive is formed on the surface of granular aggregate of 10 to 80 mesh, and an anti-blocking material layer is formed on the colored layer. It is characterized by containing colored processed aggregate.

Moreover, the manufacturing method of the sand wall material according to the present invention is as follows. 8
A colored paste containing a pigment, an extender pigment, and an organic adhesive is added to the granular aggregate of 0 mesh and stirred to adhere the colored paste to the granular aggregate, and the colored paste adheres to the surface of the granular aggregate. It is characterized by containing a colored processed aggregate obtained by adding and mixing an anti-blocking material while it is in a wet state, and then drying this.

Typical granular aggregates suitable for carrying out the present invention are silica sand, crushed stone, agar stone, crushed synthetic resin, synthetic resin granules, and inorganic granulated materials, and their shapes include acute angular protrusions. It is desirable to use something as close to a spherical shape as possible. The reason why the particle size of the granular aggregate is specified to be 10 to 80 meckles is as follows. If it is too large than 1 o mesh, the coating thickness of the decorative surface becomes large, which not only increases the weight of aggregate used per unit area of the wall surface, but also significantly reduces the workability of troweling. Unable to express graininess.

Pigments, extender pigments, organic adhesives used in the present invention &J
may be those conventionally used in manufacturing sand wall materials. The pigment may be either organic or inorganic, and the organic adhesive and L7 may be of any type as long as they have water resistance and adhesion. Extender pigments include calcium suboxide, clay, talc, mica powder, and the like.

In the present invention, the pigment, extender pigment, and organic adhesive are mixed in advance to form a colored base before being stirred with the granular aggregate. The viscosity of this colored paste is 1
0.000 to 40100Qcpe (25-C) is desirable to 1 (If it is lower than LOOOcps, the coloring paste will sag 1, so it will not be possible to thicken the film with one coloring. On the other hand, if it is lower than '0*0000pR If it is too high, it is not only difficult to handle, but also the colored paste cannot be sufficiently dispersed and mixed, especially when the granular aggregate used has acute angular protrusions. It is desirable to have 3 volumes or more.3
This is because if the volume is less than 1, it will not be possible to sufficiently fill the recesses on the surface of the granular aggregate when the granular aggregate used has acute angular protrusions. By satisfying the above conditions regarding the viscosity and usage ratio of the colored paste, a thick colored layer with strong hiding power will be formed on the granular aggregate,
The result is a beautiful decorative sand wall material in which the granular aggregate surface is not partially exposed. At the same time, the colored aggregate obtained becomes almost spherical, so when applying with a trowel, the colored aggregate does not touch the surface of the trowel or the base, making it easier to move with the trowel, thereby preventing trowel elongation and trowel slippage. It becomes significantly better.

As the antiblocking material used in the present invention, ultrafine silicic acid particles can be used in addition to those used as the extender pigments. The amount used cannot be determined because it varies depending on the type of granular aggregate and colored paste.
If the amount used is extremely large, it will not be spread on the surface of the colored layer and will be released and will be filled between the colored aggregates when forming the wall surface, resulting in a poor sand wall-like finish. On the other hand, if the amount used is extremely small, the anti-blocking effect cannot be obtained and it does not contribute to improving workability.

Next, the manufacturing process of the present invention will be explained. The colored paste prepared in advance is stirred together with the granular aggregate. This stirring causes a colored paste layer to adhere to the surface of the granular aggregate.

Immediately after that, that is, when the colored paste layer on the surface of the granular aggregate is in a wet state, if the anti-blocking material is added and stirred,
The anti-blocking material layer is attached to the surface of the colored paste layer attached to the surface of the granular aggregate. At this time, since the colored paste layer has not yet been stabilized, a portion of the colored paste layer is mixed into the anti-blocking material layer, and the interface between the colored paste layer and the anti-blocking material layer becomes unclear. That is, the closer to the inner periphery of the anti-blocking material layer, the more pigments, extender pigments, and organic adhesives contained in the colored paste layer are contained. On the other hand, since the colored paste is not mixed into the outer periphery of the anti-blocking material layer, the colored paste layers on the surfaces of adjacent granular aggregates do not adhere to each other. By applying the obtained product in this way to an appropriate dryer to remove moisture,
A colored processed aggregate is obtained in which a colored layer and an anti-blocking material layer are formed on the surface of the granular aggregate.

Incidentally, the spreading of the anti-blocking material needs to be completed in a short time. This is because if stirring is continued after dewatering has started, the attached colored paste layer and anti-blocking material layer will easily fall off from the granular aggregate.

If the colored aggregate obtained in this way is mixed with C, M, C, which provides workability for troweling, and a synthetic resin emulsion that provides adhesive strength, and is kneaded with an appropriate amount of water, sand wall material can be obtained. It can be done.

Since the sand wall material according to the present invention has an anti-blocking material layer formed on the outer surface of the spherical colored aggregate, the following effects can be obtained. That is, since the anti-blocking material layer swells during kneading with water, the material is soft to the touch and stretches smoothly with the trowel, significantly improving workability. In addition, since the colored aggregate has good water retention, it is effective in preventing drips during painting, and the installer can easily work on the elevation.

Furthermore, the sand wall material according to the present invention has an excellent graininess and aesthetic appearance because it contains a colored processed aggregate in which a desired colored layer is formed on the surface of the aggregate that maintains a desired particle size.

The method for producing a sand wall material according to the present invention includes pigments, extender pigments,
Since an organic adhesive and the like are mixed in advance to form a colored paste, a colored processed aggregate with a homogeneous colored layer formed on the surface of the granular aggregate can be obtained by mixing in a short time. In addition, in the method for producing sand wall materials according to the present invention, since the colored paste adhered to the surface of the granular aggregate is mixed with an anti-blocking agent while it is in a wet state, it does not form into a plate or form a plate during drying. There is no risk of blocking.

Next, the present invention will be explained based on examples.

Example 1 300 g of water-dispersible pigment (product name: ERO-PM-6R manufactured by Sumika Color Co., Ltd., solid content 24%), titanium oxide (solid content 60%), 25 mm f1 V-250 [[', acrylic Synthetic resin emulsion (product name: Bolizo-A/AP60
4. Mix 4,500 g of Showa Kobunshi Co., Ltd. fM) uniformly with a hand mixer and mix colored beinet (27[]00
QpFl, BH type boiled 50-ter IQ r, p, m,
) was obtained.

Next, 500 g of silica sand (trade name: Nijirika Sand, produced in Australia) with a particle size of 10 to 80 mesh was uniformly stirred for 60 seconds, and then 500 g of talc was added as an anti-blocking material.
p was added and mixed again for 30 seconds. The Nigui was dried in a flash dryer to obtain colored aggregate.

Next, 5000 f of crystal was mixed with C, M, 0.50 g, and acrylic synthetic resin emulsion (trade name: Bolizo/l/
AP50 (manufactured by Showa Kobunshi Co., Ltd.) 301 and water 220
When kneaded with 0g and applied to a wall surface with a trowel, workability such as elongation with a trowel was good, and a wall surface with a beautiful appearance and a sense of mass could be formed without causing any drooping phenomenon on the wall surface during painting.

Example 2゜Inorganic powder pigment (red iron) 500f, titanium oxide 25
009, talc 50 mouthfuls 0! , super acid particle silicic acid (product name: Aerosil 200, manufactured by Nippon Aerosil Co., Ltd.) 700g
, acrylic synthetic resin emulsion (product name: Bolizo/l/AP601! manufactured by Showa Kobunshi Co., Ltd.) and water 20
00 El was uniformly mixed with a hand mixer to obtain 17 colored paste.

This colored paste (3010000PR%BH type/f6
50-tar 1Q, r, p, m, ) and particle size 10
~ 80 mesh of inorganic granules 250 and 9 were stirred for 60 seconds, and pre-mixed 10,000 g of inorganic powder pigment with 4 = 1 as an anti-blocking material (added 10,000 g of - and stirred and mixed again for 30 seconds) [-.When this was dried in a continuous band type aerated dryer, a colored aggregate with no blocking was obtained.

When this was used to form a wall material in the same manner as in Example 1, it gave the feeling of calmness and rust similar to that of a clay wall, and also expressed the granular feel of a sand wall.

patent applicant Nihon Kaizai Kogyo Co., Ltd.

Claims (3)

[Claims] (1) Granular aggregate of 10 to 80 mesocieties.
1. A sand wall material comprising colored processed aggregate on which a colored layer containing an extender pigment and an organic adhesive is formed, and an anti-blocking material layer is formed on the colored layer. (2) Add a colored paste containing pigments, extender pigments, and organic adhesives to the granular aggregate of O~80 mesh and stir [-
The colored paste was attached to the surface of the granular aggregate, and while the colored paste attached to the surface of the granular aggregate was in a wet state, an anti-blocking material was added and mixed, and then this was obtained by drying. A method for producing a sand wall material characterized by containing colored aggregate. (3) The granular aggregate has acute angular protrusions, the colored paste has a viscosity of 10.000 to 4.000' cps, and the addition ratio of the colored paste to the granular aggregate is 3 vol. A method for producing a sand wall material according to claim 2.