JPH088160Y2 - Engraving material - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel inscription material.

[0002]

[Prior art and its problems] Engraving is an art in which, for example, a material for engraving is engraved according to the engraving, and the engraved portion is colored to make a work. Is used.

In the case of wood, there are many works that make the best use of bare wood, but in many cases, it is often desired to express an inscription or a picture on a colored surface on which a wood grain material is erased. For this reason, it is often the case that walnut powder is applied and then written or colored on it, but this not only increases the number of steps, but it also has the drawback that the application of walnut powder loses the sharpness of the carved surface and the taste of the cut end. .

Further, wood has a change in hardness due to the grain of wood and cannot be engraved with a constant force, and if it is an inverted grain, it tends to be curled or split depending on the engraving direction, and in many cases, beginners fail to engrave.

[0005] Further, some woods have a bleeding color depending on the type of wood. In engraving, the surface is usually polished after coloring in order to erase the protruding portion of the color, but there are cases where the bleeding of the color is clearly visible and the work cannot be produced.

Further, since it is difficult to obtain a large version of wood, the size of the work is limited, and the wood is liable to be deformed or deteriorated by insect damage, and there is a problem in the storability of the work.

The present invention has been made for the purpose of eliminating such conventional problems.

[0008]

[Means for Solving the Problems] The inventors of the present invention can overcome the above-mentioned problems as long as they are inorganic moldings and have both suitability as a writing material and suitability as an engraving material. As a result of earnest research based on the idea that, it was found that among the calcium silicate compacts containing the secondary particles of calcium silicate crystals as the main component, especially those containing resin, the density and surface smoothness in a specific range. It has been found that those having the above can satisfy all of the above requirements, and has come to complete the present invention.

That is, the present invention relates to calcium silicate crystals 2
The resin-containing querqueous silicate molded body is molded from a molding material containing secondary particles as a main component, and the molded body is 0.25
The present invention relates to an engraving material having a density of 1.0 g / cm ³ and a surface smoothness obtained by polishing with a sandpaper of No. 80 or more.

In the present invention, the calcium silicate compact needs to be molded from a molding material containing secondary particles of calcium silicate crystals as a main component and contain a resin.

A resin-containing calcium silicate molded plate has been generally proposed by the present applicants (for example, JP-A-60-26435).
As a result of containing the resin, the strength is increased, brittleness is eliminated, and the edges are not chipped during engraving.

The type and addition amount of the resin may be in accordance with a conventional method, and a rubber type, particularly SBR, is particularly effective for eliminating brittleness of the molded body. In addition to the resin, other additives such as reinforcing fibers can be added. As an addition amount, 3 to 15 parts by weight of resin and 100 to 30 parts by weight of secondary particles, and reinforcing fibers 1 to 30 are added.
About parts by weight is suitable.

In the present invention, when the density of the resin-containing calcium silicate compact is too low, the water absorbency becomes high and it is not suitable as a writing material, while when it is too large, it becomes too hard and it is not suitable as an engraving material. Therefore, it is 0.25 to 1.0 g / cm ^3, preferably 0.3 to
It is necessary to be in the density range of 0.9 g / cm ³ ,
Within this density range, both suitability for writing and engraving can be provided.

In the present invention, if the surface of the molded body is too rough, it may be difficult to draw a document.
It is necessary to have a surface smoothness obtained by polishing with sandpaper of No. 12 or more, preferably No. 120 or more.

The production examples of the present invention will be described below, and the results of the writing and engraving suitability test of the present invention products 1 to 4 obtained from the respective production examples and a comparative product not satisfying the constituent requirements of the present invention will be shown. And as shown in the following table. The surface smoothness was standardized to No. 80 sandpaper.

[0016]

[Invention 1 to 4] Silica powder and quicklime are mixed with warm water to prepare lime milk so that the molar ratio of SiO ₂ and CaO is 1 and water is added to add water to the solid content. Was used as the raw material slurry. The obtained raw material slurry is hydrothermally reacted for 4 hours under stirring at a water vapor pressure of 15 kg / cm ² to obtain a diameter of 30 to 150 μm in which zonotolite crystals are aggregated.
An aqueous slurry composed of substantially spherical secondary particles of calcium silicate crystals having a size of 1 μm was obtained. This aqueous slurry 100
10 parts by weight of the reinforcing fiber and 10 parts by weight of the liquid polymer (SBR) were added to the parts by weight (solid content) and uniformly mixed to obtain a molding material. This molding material is subjected to pressure dehydration molding into a predetermined shape,
By drying at 120 ° C., four types of plate-shaped calcium silicate compacts having different densities were obtained.

[0017]

[Comparison 1-2] Same as Inventions 1-4 except that the density is different.

[0018]

[Comparison 3] A plaster plate for commercial teaching materials (made by Chubu Denki Ware Co., Ltd.)

[0019]

[Explanation of Test Method] (1) Water Absorption Speed Test As shown in FIG. 2, a scaled transparent cylinder b with an opening area of 1 cm ² is placed vertically on the surface of a molded plate a to be measured and the lower end is sealed. Then, 1.0 of pure water C is placed in the cylinder b.
ml is supplied by using a spoid, and the time (second) required for the liquid level C ₁ of the pure water C to drop 0.5 ml between the scales is measured.

(2) Color fastness test 1 The goodness and badness of the writing brush is evaluated by feeling.

(3) Color Glue Test 2 0.3 mm of ink was applied to a paintbrush (No. 10 ZBS manufactured by Pentel).
The length of the line which was able to be written without blur when a straight line having a line width of about 1 cm was drawn at a speed of about 0.5 m / s was measured.

The longer the line length, the better the writing performance.

(4) Color Glue Test 3 0.5 g of ink was applied to a small brush (willow brush weasel hair), and it was investigated how many characters of a predetermined size "dream" would be applied to the following material. The number of strokes is 14. For example, 5/14 means that the fifth stroke cannot be drawn. The larger the number of characters, the better the writing performance.

(5) Hardness test The hardness of the material was converted into Brinell hardness by pressing a steel ball having a diameter of 10 mm against the surface of the material and measuring the pressing load when the diameter of the recess became 2 mm. The lower the value, the easier it is to engrave, but it is difficult to obtain a beautiful engraved surface if the value is too low.

[0025]

[Table 1]

◎ -Good ○ -Slightly good △ -Poor × -Extremely bad As can be seen from the above table, the inventions 1 to 4 can satisfy both the writing property and the engraving property and have both the writing aptitude and the engraving aptitude. , Is suitable as an engraving material, while comparisons 1, 2
It can be seen that and gypsum lack at least one of the above two suitability and are not suitable as an engraving material.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a calcium silicate compact 1 which constitutes the engraving material of the present invention. The compact 1 is made of a resin-containing molding material whose main component is secondary particles of calcium silicate crystals. 25-1.0 g / cm ³ Preferably 0.3-
The surface 2 is molded so as to have 0.9 g / cm ^3, and the surface 2 is polished with sandpaper of No. 80 or more, preferably No. 120 or more to give smoothness.

In the production of the inscription work, first, the smooth surface 2 of the resin-containing calcium silicate molded plate 1 is written by using, for example, a writing brush and ink, or the writing is directly performed by using carbon paper. Write it in the basket and transfer it, or attach the transfer.

Since the molded body 1 is excellent in writing suitability, the smoothness of the surface 2 makes it very easy to write, and since the color does not bleed, sharp thin lines can be easily written. The reason why the color does not bleed is not clear, but the secondary particles of the calcium silicate crystals, which are the main component of the molded body 1,
A large number of primary particles are entangled three-dimensionally, and usually have a particle size of about 5 to 150 μm. It is presumed that this characteristic particle structure plays a major role in preventing color bleeding. Further, since the molded body 1 has an appropriate hardness and therefore does not dent when writing with a ballpoint pen or the like, transfer with carbon paper can be drawn with sharp lines as if writing on paper.

After writing a calligraphy or a basket, engraving is performed according to the calligraphy. The molded body 1 has a density of 1.0 cm
It has a hardness of ³ or less, is softer than wood, has no unevenness such as wood grain or grain, which is seen in wood, and has a constant hardness. Therefore, the engraving work is easy, and even a beginner can perform deep engraving without much labor and time. In addition, since the material's brittleness has been eliminated by containing resin, sharp engraving without omission is possible.

After engraving, the engraved portion is colored, and the surface of the molding plate 1 is polished to erase the protruding portion of the colored portion. The polishing after the coloring can be easily performed because the color does not bleed. It is sufficient to allow the carving allowance of the polishing performed after coloring to be about 0.2 mm, and the depth of the carving and thus the three-dimensional effect can be maintained as is, regardless of such polishing. Further, since the molded plate 1 is made of calcium silicate and is pure white, the color is wide and clear in the range of lightness in coloring and coloring, and therefore, it is not necessary to apply the powdered black powder that is seen in wood, and it has an artistry effect. High-quality work can be obtained.

Further, since the molded body 1 is made of calcium silicate and is free from alteration and insect damage, it is excellent in storability, and since it is a molded body, even a large plate of, for example, 1 × 3 m can be easily obtained. It is possible to make a print work.

[0034]

Industrial Applicability As described above, according to the present invention, it is possible to eliminate the problems of the conventional wood, to produce a highly artistic work, and to provide an engraving material having excellent storage stability.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of a method of measuring water absorption speed.

[Explanation of symbols]

 1 Resin-containing calcium silicate molded plate 2 Surface

Claims (1)

[Scope of utility model registration request] 1. A resin-containing cesium silicate compact molded from a molding material containing secondary particles of calcium silicate crystals as a main component, wherein the compact is 0.25 to 1.0 g /
An engraving material having a density of cm ³ and a surface smoothness obtained by polishing with a sandpaper of No. 80 or more.