JPH07114727B2 - Concrete interior product and manufacturing method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interior product, in particular, a concrete interior product as a decorative high-grade furniture and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, interior products are generally manufactured by applying some coating to wooden products made of natural wood. In the case of lacquer-painted wooden interior products as high-quality furnishings, in order to prevent uneven quality, expansion and contraction, and deformation of the raw material wood, the raw wood is lumbered into thin plates and laminated and adhered. It is manufactured by using plywood, plywood, etc. as the material, processing it into the shape of a product, and then applying lacquer coating on the surface.

Thus, as shown in FIG. 7, an example of a conventional lacquer coating process includes a cloth tensioning process 1, an undercoating process 2, an intermediate coating process 3 and a top coating process 4. More specifically, as shown in Table 1, in the cloth tensioning step 1 and the grounding step 2 among the above-mentioned steps, in the cloth tensioning step 1, the material surface is subjected to waterproof treatment, the material is solidified, and the unevenness is removed by the putty. Treatment, dressing with a gauze cloth, and scouring to even out the texture,
Six treatment operations such as rough polishing and ground treatment are performed respectively, and in the next ground step 2, five undercoats for spraying polyester surf acer, five laying for drying and tightening the undercoat, water sanding with paper, etc. Perform processing work.

[0004]

[Table 1]

Then, in the next intermediate coating step 3, as shown in Table 3, it is checked for lacquer intermediate coating, dents, etc., to find scratches to be filled with putty, repeated work of polishing with paper and intermediate coating, polishing, raw lacquer. Nine processing operations such as sliding lacquer processing to rub in and laying down to tighten lacquer are performed.

[0006]

[Table 3] Further, in the final topcoating step 4, as shown in Table 4, 15 finishing operations such as topcoating, laying, polishing, skin smoothing, and lacquer lacquer are performed for finishing. The number of days required by 4 is 36 days.

[0007]

[Table 4]

[0008]

[Problems to be Solved by the Invention] As described above, conventional wooden interior products with lacquer coating are not suitable for mass production because they require the processing of the material wood, and most of the processing involves many handmade parts. However, in lacquer coating, since 36 complicated and skill-requiring processes such as a cloth-tensioning process and a grounding process which are pretreatments before lacquer coating are required, the number of production days is long and the cost is high. It has the drawback of becoming expensive.

As a solution to these conventional drawbacks, Japanese Utility Model Publication No. 51-52701 discloses a furniture made of cement reinforced with alkali resistant glass fiber. However, although it cannot be understood from the description in the specification whether the glass fiber is a long fiber that is contained over the entire length of the furniture or a short fiber having a length of about 3 cm, for example, it is short. Even if it is a fiber, if you mix it with cement mortar and put it in a mold and mold it, the surface becomes very rough and it is not possible to form a fine uneven pattern, and after removing from the mold There is a problem that various problems that it is necessary to apply surface coating after smoothing the surface and then coating with a roux are time-consuming, still remain.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and it is possible to form a fine uneven pattern, and also the surface smoothness. The purpose of the present invention is to provide a high-strength interior product that has a simple lacquer coating process because it is excellent in, and its gist is the concrete substrate made of silica fume mixed with pozzolanic activity or microfiller effect. On the surface of, a concrete interior product characterized by forming a film by lacquer coating, and a reversal type was produced from the master model, and silica fume mixed concrete having pozzolanic activity or microfiller effect in the reversal type was manufactured. When a concrete base is manufactured by casting, the surface of the concrete base is coated with lacquer paint. In the production method of concrete interior products, which comprises forming a film.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments of FIGS. 1 is a perspective view of a table which is an example of an interior product according to the present invention, FIG. 2 is an enlarged sectional view of the same part, FIG. 3 is a block diagram showing the same manufacturing process, and FIG. Explanatory drawing of FIG.
FIG. 6 is an explanatory view of manufacturing a table by a reversal type, and FIG. 6 is a block diagram showing a roe coating process by the method of the present invention.

In the figure, reference numeral 1 is a concrete table, which is composed of a plate-shaped top plate portion 1a and a pair of leg portions 1b, 1b provided below both sides thereof, and the table 1 is of pozzolanic activity or microfiller. It is composed of a concrete base body 2 into which silica fume having an effect is mixed, and a film 3 formed on the surface thereof by lacquer coating. The silica fume is an ultrafine particle mineral containing SiO ₂ as a main component, which is a by-product when manufacturing silicon, ferrosilicon, and other silicon alloys.

Here, the pozzolanic activity means that, for example, soluble silicic acid such as silicon dioxide or alumina is gradually combined with calcium hydroxide produced when the cement is hydrated at room temperature, It has the property of generating insoluble and stable calcium silicate, etc. As a result, the structure of the hardened cement paste becomes dense, the strength (compressive strength, bending strength) of concrete increases, and the watertightness and durability are improved. improves.

The microfiller effect is a void filling effect, and since silica fume is an ultrafine powder which is about 1/100 of the cement particles, it is agglomerated when mixed with cement. It can enter the block structure of the particles and fill the voids. As a result, when the structure becomes dense and the surface becomes smooth, it is effective in improving the physical properties of concrete such as strength enhancement, air permeability and water permeability reduction.

Next, a method of manufacturing the concrete table 1 containing silica fume will be described. First, in the masterter model manufacturing process A, a master model 4 of the same type as the concrete table 1 is manufactured from a desired material such as wood. To do. Then, in the reversal mold manufacturing process B, as shown in FIG. 4, the master model 4 is placed in the mold 5 with its top plate portion 4a as the bottom portion and its both leg portions 4b and 4b facing upward. After the release agent is applied to the exposed surface of, the plaster S is poured and filled into the space inside the mold 5.

Then, after the plaster S has hardened, the form 5
As shown in FIG. 5, the master model 4 is taken upside down and the left and right side walls 5a and 5a of the mold 5 are removed.
A vertical recess 6 having the same shape as both the leg portions 4b and 4b is formed between a and a, and a recess 7 having the same shape as the top plate portion 4a is formed in the upper opening 5b of the mold 5, respectively. Inverted mold 8 made of gypsum and having an uneven shape is formed. The material of the reversal type 8 may be a material other than the above-mentioned gypsum.

Next, in the concrete placing step C,
In the state shown in FIG. 5, after applying a release agent to the exposed surface of the reversing mold 8, concrete K containing silica fume is placed in each of the recesses 6 and 7. Then, by hardening the concrete K, a concrete base body 2 of the same type as the master model 4 and containing silica fume is formed.

As a mixing example of the concrete K containing the silica fume, as shown in Table 2, the mixing ratio of silica fume to cement was about 7%. Ultrafine silica fume enters between the particles and the structure becomes dense. Therefore, even if the surface of the recesses 6 and 7 of the mold 5 has a complicated uneven pattern, the uneven pattern is accurately transferred to the surface of the concrete base 2. Further, since the structure is densely packed and uniformly filled to be solid, the base body 2 has high strength and excellent surface smoothness, but also has high abrasion resistance. .

[0019]

[Table 2]

Next, in the curing step C, the silica-fume-mixed concrete substrate 2 is kept in the mold 5 and is subjected to constant temperature curing at 20 ° C. for 1 day. Then 65 ° C
Steam cure for 3 hours.

Further, in the lacquer coating step E, after taking out the cured silica fume-mixed concrete substrate 2 from the mold 5, the surface of the substrate 2 is coated with lacquer to form a film 3. . Here, in the lacquer coating step E, as shown in FIG. 6, first, in the sealer processing step E1, in order to prevent the precipitation of the alkaline component contained in the concrete, the surface of the concrete base body 2 is, if necessary, marked. Apply the sealer treatment for stopping about twice. After that, in the intermediate coating step E2, the surface is coated with lacquer and polished with paper, and this operation is repeated several times.

When the surface of the concrete base 2 is coated with lacquer to form the film 3, the surface of the base 2 has a densest structure and is excellent in surface smoothness. Although the lacquer can be coated as it is without any processing treatment to make it possible, since the water absorption is relatively high, the lacquer coating work can be performed dry without using water.

Then, in the next top-coating step E3, top-coating with high-grade lacquer and polishing with charcoal are carried out, and this operation is repeated several times. And finish with finishing to increase the luster. In the glossing stage, the grain of the polishing compound is gradually changed from coarser grains to finer grains to produce gloss.

In the above-mentioned embodiment, the example of the table is described as the interior product, but it can be applied to other interior products such as chairs, cabinets, furniture, home furnishings, parts thereof, and exterior products.
By applying the present invention to these things,
It is possible to obtain a product that is rich in weight and has improved weather resistance.

[0025]

As described above, the concrete interior product according to the present invention has the structure in which the surface of the concrete substrate containing silica fume having the pozzolanic activity or the microfiller effect is coated with lacquer coating. In addition, it is possible to obtain a product having a high strength and a thin plate thickness, and since the structure is dense and the surface smoothness is high, the step of lacquer coating can be greatly shortened. Further, the manufacturing method according to the present invention comprises manufacturing an inversion type from a master model, and placing a concrete containing silica fume having a pozzolanic activity or a microfiller effect in the inversion type to produce a concrete substrate. In addition, since a film formed by lacquer coating is formed on the surface of the concrete base, it is possible to accurately transfer even a complex shape, and it is possible to mass-produce high-quality products.

[Brief description of drawings]

FIG. 1 is a perspective view of a concrete table according to the present invention.

FIG. 2 is an enlarged cross-sectional view of the same portion.

FIG. 3 is a block diagram showing a manufacturing process of the product.

FIG. 4 is an explanatory view of manufacturing an inverted model.

FIG. 5 is an explanatory view of manufacturing a concrete base body using an inverted model.

FIG. 6 is a block diagram showing a lacquer coating process.

FIG. 7 is a block diagram showing a conventional lacquer coating process.

[Explanation of symbols] 1 Concrete table 2 Concrete base material mixed with silica fume 3 Coating 4 Master model 5 Form 8 Inverted type S Gypsum K Concrete mixed with silica fume

Claims (2)

[Claims] 1. A concrete interior product characterized in that a film formed by lacquer coating is formed on the surface of a concrete substrate containing silica fume having a pozzolanic activity or a microfiller effect. 2. A concrete base is manufactured by manufacturing a reversal mold from a master model, and placing concrete containing silica fume having a pozzolanic activity or microfiller effect in the reversal mold to manufacture a concrete base. A method for producing a concrete interior product, comprising forming a film by lacquer coating on the surface of a substrate.