JPH0627428B2 - Method of forming relief pattern - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming an uneven relief pattern on the surface of a mortar layer.

[Industrial application field]

The material having an embossed pattern is widely used in various fields including exterior and interior for construction.

[Conventional technology]

Conventionally, as a typical method of forming an embossed pattern on the surface of the mortar layer, (1) a method using a trowel and a spatula, (2) a method using a roller, (3) a method using a spray, and (4) a method using embossing (5) A method using blasting is known.

However, the method (1) has been developed as a method for finishing a tight wall, and it is very difficult to form a fine relief pattern and requires skill.

Further, the method (2) is a method suitable for forming a simple repetitive pattern because it forms an unevenness by imprinting the pattern roller, but for forming a complicated and fine pattern. It was not suitable.

Further, the method (3) is a method suitable for forming a random uneven pattern by a spray gun, but has a drawback that it cannot form an arbitrary specific pattern such as a design or a character. It was a thing.

Further, the method (4) is a method suitable for mass production in a factory, but it is not suitable for giving different patterns to individual products.

In the method (5), the mortar layer is partially masked, and the unmasked portion is blasted to be ground to form an uneven relief pattern. However, this method causes deterioration of the work environment due to dust and noise generated during the blast treatment, and also has a large adverse effect on the surroundings of the work place, and also requires a long working time and is dangerous. And the like.

Furthermore, when applying mortar to concrete panels,
For the purpose of improving the adhesion between mortar and concrete,
The following methods are known as means for making the concrete surface uneven. That is, this is a method for producing a concavo-convex concrete panel in which the cement hardening retarder is partially applied to the formwork in advance, concrete is then poured into the formwork, cured, and then washed out.

However, this method requires a mold and is not applicable to any substrate. Furthermore, the obtained unevenness was not a sharp (clearly defined) and deeply carved uneven pattern. Therefore, this method is unsuitable as a means for forming a relief pattern for the purpose of aesthetics.

[Problems to be solved by the invention]

In view of the current situation in the field of embossed patterns as described above, the present invention relates to a method for easily forming an embossed embossed pattern that is clear and is not a random pattern on any substrate without requiring skill. As a result of earnest study, the present invention has been achieved.

[Means for solving problems]

That is, the present invention is (i) a step of forming a mortar layer on a substrate, (ii) a water-soluble sheet having a cement hardening retarding effect, the surface of which is provided with a liquid impermeable film in a pattern. The step of placing the liquid impermeable film side on the mortar layer with the mortar layer side, impregnating the cement hardening retarder into the mortar layer, (iii) curing the mortar layer, (iv) after curing the mortar layer, The present invention relates to a method for forming an embossed pattern having deep unevenness, which comprises a step of washing and removing a mortar layer at a portion impregnated with a cement hardening retarder.

In the method of the present invention, the cement hardening retarder is impregnated into the mortar layer according to the pattern of the liquid-impermeable film of the sheet adhered onto the uncured mortar layer. Therefore,
The part impregnated with the hardening retarder has a delayed hardening, and can be easily removed by washing even after curing. Therefore, the method of the present invention has a feature that it is possible to form an embossed pattern having a sharp unevenness and deep unevenness on the surface of the mortar layer according to the pattern of the liquid-impermeable film of the sheet.

In the present invention, by appropriately controlling the thickness of the mortar layer and the degree of impregnation of the cement hardening retarder and the removal of the mortar layer, not only those having shallow irregularities but also those having deep irregularities The feature is that an embossed pattern having irregularities of a desired depth can be freely formed. Further, the method of the present invention has a feature that the embossed pattern having deep unevenness can be formed at a very low cost and excellent in durability because the embossed pattern is composed of the mortar layer.

Hereinafter, the method for forming a relief pattern having unevenness according to the present invention will be described more specifically.

First, as the base material used in the present invention, any known base material to which mortar can be adhered can be applied. For example,
Examples thereof include metals such as iron, aluminum and stainless steel, glass, tiles, ceramics, concrete, bricks, stone materials, woods, plastics and laminates thereof. The surface does not necessarily have to be a flat surface, and may be a curved surface, for example. These base materials may be subjected to a surface treatment such as roughening, coloring or applying a primer, if necessary.

In the present invention, as the first step, mortar is applied to the above-mentioned base material by a commonly used means such as a trowel, spatula, or spray to form a mortar layer. The thickness of the mortar layer is not particularly limited. However, it is preferably about 1 to 20 mm for practical use depending on the depth of the unevenness.

As the mortar used in the present invention, those generally used conventionally can be applied as they are. Ie cement,
It consists of aggregates such as sand and water, and if necessary, various additives such as coloring pigments, extender pigments, fibrous substances or hardening accelerators, hardening retarders, thickeners, water reducing agents, defoaming agents and the like. Etc. are mixed. A so-called resin mortar containing an acrylic resin-based emulsion, a vinyl acetate resin-based emulsion, an epoxy resin-based emulsion, a styrene butadiene resin-based emulsion, or the like can also be used in the present invention.

In the present invention, the mortar layer may be formed by applying mortars having different colors in addition to the mortar having the same color. By forming a plurality of mortar layers having different colors in this way, the degree of removal at each place when the mortar layer is washed and removed in the washing and removing step described later,
That is, by adjusting the depth of the concave portion, it becomes possible to form an uneven relief pattern having a multicolored change depending on the depth.

While the mortar layer thus formed is uncured, preferably, there is some free water on the surface of the mortar layer, or while the mortar layer surface is in a state of bleeding when lightly pressed with a finger. In addition, a water-soluble sheet with a cement hardening retardation effect, in which a liquid impermeable film is applied in a pattern on its surface, the liquid impermeable film side is placed on the mortar layer side and adheres closely. Let

A water-soluble sheet having a cement hardening retarding effect used in the present invention, which has a pattern of a liquid impermeable film on its surface, for example, polyvinyl alcohol, poly (meth) acrylic acid or a salt thereof, Hydroxyethyl (meth) acrylate, gelatin, cellulose derivatives, starch, polymaltotriose, gum arabic, tamarind gum, xanthan gum, sodium alginate, polyethyleneimine, polyvinylpyrrolidone, etc. Depending on the plasticizer, colorant, filler or thickener, surfactant,
A water-soluble resin sheet that is formed by blending various additives such as defoaming agents, and a material that forms a liquid impermeable film such as paint or resin solution is applied in a pattern by means such as silk screen. Alternatively, it is impregnated.

When the water-soluble resin used to form the sheet is a polysaccharide such as starch or polymaltotriose having a cement hardening delaying effect, it is not always necessary to add a cement hardening retarder. Absent.

In the present invention, as the cement hardening retarder, those generally used conventionally can be used as they are.
Specifically, for example, sodium dihydrogen phosphate, disodium hydrogen phosphate, sodium phosphate, sodium tetraborate, saccharides, calcium acetate, oxycarboxylates, lignin sulfonates, alcohols or commercial products such as Rital (JP Soda Matter Builders' product name), Vinsol 80R (Yamaso Chemical Co., Ltd. product name), Air Coal (Manor Co., Ltd. product name), KW-100 (Kao Soap Co., Ltd. product name), etc. To be If it is solid, it is used as an aqueous solution.

Further, particularly by using a cement hardening retarder mixed with a coloring agent, since the location of the mortar layer impregnated with the cement hardening retarder to be washed and removed can be identified by coloring, it is convenient in the washing and removing step described later. is there.

In the present invention, since the sheet itself having the liquid impermeable coating has a cement hardening retarding effect, the working efficiency is improved as compared with the method of applying the cement hardening retarder solution at the work site. be able to.

In the present invention, a water-soluble sheet having a cement hardening retarding effect on the mortar layer, when a sheet having a liquid impermeable film on its surface is placed, the resin is dissolved by water to form a liquid impermeable film. The presence of water is essential because the cement hardening retarder is impregnated into the mortar layer other than the lower layer. Therefore, as described above, it is desirable that the mortar layer is in a state in which free water is present, but in some cases, the surface of the mortar layer is sprinkled with water before the sheet is put on, or after the sheet is put on, the sheet surface You can also spray water on it.

In the present invention, after the cement hardening retarder is impregnated into the mortar layer, or while the mortar layer is impregnated, the mortar layer is cured for a certain period of time. As a curing method, a natural curing method, a steam curing method, a pressure curing method or the like which is generally known as a mortar curing method can be adopted.

The time for curing is in the cleaning and removing step described below.
The mortar layer where the cement hardening retarder is not impregnated is hard enough to be removed, and the mortar layer where the cement hardening retarder is impregnated is uncured or semi-cured to the extent that it can be removed relatively easily. The time required to do this. Specifically, for example, in the case of a natural curing method, it is preferable to set the temperature at room temperature (20 ° C.) for 8 to 50 hours.

The sheet remaining after impregnating the cement hardening retarder into the mortar layer (mainly the liquid impermeable film part)
Can be appropriately removed after the impregnation is completed. For example,
It can be before, during or after curing of the mortar layer, and can be performed at the same time as the mortar layer is washed and removed as described later.

In the present invention, after curing the mortar layer, a cement hardening retarder is impregnated by a method of using water or a cleaning liquid consisting of water and an emulsifier, and rubbing with a rotating brush, or a method of high-pressure injection of the cleaning liquid. The removed mortar layer is washed away.

Thus, a mortar layer having a relief pattern having deep irregularities is obtained. In the present invention, in order to further impart color, adjust glossiness, and further impart weather resistance, water resistance, chemical resistance, etc., on the entire surface or in the concave portions (or convex portions) in the present invention. It is also possible to apply another colored coating film, apply a clear or color clear coating film to the entire surface, or polish.

〔The invention's effect〕

As described above, according to the method of the present invention, it is possible to easily and inexpensively obtain an embossed pattern having deep unevenness of any depth. Further, there is a feature that a desired concavo-convex pattern can be easily obtained by variously changing the pattern formed on the sheet.

Further, the product having a mortar layer having an uneven pattern obtained by the method of the present invention has a feature that it can be used as a building material, a decorative article, etc. and can be manufactured in a factory or on-site.

Hereinafter, the present invention will be described in more detail with reference to Examples.

In the examples, "part" and "%" are based on weight.

Example 1 Asbestos slate board (900 × 18) with a wooden frame around it
A smooth mortar layer having a thickness of 3 mm was formed on the surface (00 × 10 mm) of mortar composed of 100 parts of white cement, 50 parts of silica powder and 50 parts of water (using a trowel).

In addition, a paint [“Vildic” (trade name, manufactured by Dainippon Paint Co., Ltd.) was formed on a 20 μ film prepared using a solution consisting of 91 parts of polyvinyl alcohol, 8 parts of trisodium phosphate, 1 part of phthalocyanine blue, and 500 parts of water. ] Was silk-screen printed to form a sheet having a liquid impermeable film in a pattern.

The sheet is placed on and intimately contacted with the mortar layer with some free water left on the surface, and then the mortar layer is heated to a temperature of
It was aged for one day in an atmosphere at a temperature of 75 ° C and a relative temperature of 75%.

Next, while pouring water (30 / min) at a rate of 5 min / m ² , rub with a rotating nylon yarn (circular brush (φ100 mm) with a diameter of 0.6 mm bundled) (250 rpm) to impregnate the cement hardening retarder. The mortar layer at the other places was removed.

On the obtained surface, sharp pattern-like irregularities having an average depth of about 1.7 mm corresponding to the pattern printed by silk screen were formed.

On the surface of the mortar layer thus obtained, a relief pattern having an extremely relief feeling was obtained.

Example 2 A smooth mortar layer having a thickness of 5 mm was formed on a surface of asbestos slate with a mortar composed of 100 parts of Portland cement, 200 parts of silica powder, 1 part of a water reducing agent, and 75 parts of water (a trowel was used).

Further, a solution consisting of 64 parts of starch, 20 parts of gum arabic, 10 parts of rosin-based hardening retarder [“Vinsol 80R” (trade name of Yamamune Chemical Co.)], 5 parts of glycerin, 1 part of phthalocyanine blue and 500 parts of water was prepared. Prepared using 30
A paint "Vildic" was silk-screen printed on the film of µ to form a sheet having a liquid impermeable film in a pattern.

The sheet is placed on the mortar layer and then the following Example 1
Curing and cleaning removal of the mortar layer were carried out in the same manner as above to form pattern-shaped irregularities corresponding to the silk-screen printed pattern having an average depth of about 1.8 mm. On the surface of the mortar layer thus obtained, a relief pattern having a relief impression was obtained as in Example 1.

Example 3 100 parts of white cement, silica powder 2 on the surface of asbestos slate board
After forming a smooth mortar layer of 3 mm thickness with white mortar consisting of 00 parts, 10 parts titanium white, 1 part water reducing agent and 75 parts water (using a trowel), after leaving for 1 hour, 100 parts white cement, 50 parts of barite, 2 parts of naphthol red,
A red mortar consisting of 0.2 part of a methylcellulose-based thickener, 0.5 part of calcium chloride and 50 parts of water was applied over a thickness of 2 mm to form a smooth multi-layer mortar layer. Also, 80 parts of polymaltotriose, a tin-based curing retarder [“KW-10
0 "(trade name, manufactured by Kao Soap Co.)], liquid" impermeable "by silk screen printing the paint" Vildic "on a 30 µ film prepared using a solution consisting of 20 parts, 1 part of phthalocyanine blue and 500 parts of water. A sheet having a pattern applied to the film was prepared.

The sheet is placed on the mortar layer and then the following Example 1
Curing and washing removal of the mortar layer were carried out in the same manner as in 1. to form pattern-shaped irregularities corresponding to the silk-screen printed pattern having an average depth of 2.8 mm.

On the surface of the mortar thus obtained, an embossed pattern with white depressions and red protrusions, which was very embossed, was obtained.

Claims (2)

[Claims] 1. A step of (i) forming a mortar layer on a base material, and (ii) a water-soluble sheet having a cement hardening retarding effect, the surface of which is coated with a liquid impermeable film in a pattern. The step of placing the liquid impermeable film side on the mortar layer with the mortar layer side, impregnating the cement hardening retarder into the mortar layer, (iii) curing the mortar layer, (iv) after curing the mortar layer, A method for forming an embossed pattern having deep irregularities, comprising the steps of: washing and removing the mortar layer at the portion impregnated with the cement hardening retarder. 2. The method for forming an embossed pattern according to claim 1, wherein the mortar layer is composed of a plurality of mortar layers having different colors.