JPH0238342A - Decorative glassy cellular substance - Google Patents

Abstract

PURPOSE:To improve beauty by specifically constituting the upper glass layer in the subject cellular substance obtained by integrating a glass layer which can be seen through on a glassy cellular layer having the ripply top surface. CONSTITUTION:The above-mentioned decorative glassy cellular substance is obtained by laminating and integrating a dense glass layer 1 on a glassy cellular layer 4 having the top surface formed into a ripply shape. The layer 1 consists of a glassy granular matrices 2 and 2' made of glass grains as a raw material and an inorganic colorant coating layer (colored layer) 3. Colored layers (a) and (a') in the vertical direction in the side view appear as a colored netlike part 5 shown as (a) and (a') in the corresponding plan view when viewed from the upper side. On the other hand, since colored layers (b) and (b') in the transverse direction in the side view have about tens to hundreds of mu thickness, the colored layers are seen trough without coming into the vision. Thereby, ripply boundary lines (u) to (v) between the cellular layers 4 are observed. As a result, the colored netlike part three-dimensionally runs in the glassy matrices. Furthermore, the cellular layer 4 forms a ripply shape to assume a beautiful appearance.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is formed by laminating and integrating a dense glassy layer and a glassy cellular layer, and is suitable as a covering material for buildings, a material for furniture, etc.
This invention relates to a decorative glassy foam that is beautiful and has excellent heat resistance.

(Prior Art) The present applicant has previously filed Japanese Patent Application No. 62-215199, in which a decorative vitreous foam layer is laminated and integrated with a see-through glass layer on a vitreous foam layer whose upper surface is formed into a ripple shape. In addition to improving abrasion resistance and mechanical strength, the ripple pattern can be seen through the glass layer, giving it a beautiful appearance. It has been mentioned that an anchoring effect is exerted between the easily bonded glass layer and the glassy foam layer to improve adhesion.

The present invention further improves this and provides a decorative glassy foam that is beautiful and has excellent heat resistance.

JP-A No. 50-40614 discloses forming marble-like markings by mixing fine glass powder with pattern-forming coarse-grained glass and firing the mixture, but this method merely forms surface markings. However, this invention differs from the present invention in structure and effect.

(Means for Solving the Problems) The present invention relates to a decorative vitreous foam body, which is formed by laminating and integrating a dense vitreous layer on a vitreous foam layer having a rippled upper surface. The layer consists of a transparent vitreous matrix and an inorganic colored network.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to make the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings.

1A and 1B are a partial plan view and a side view, respectively, of the decorative vitreous foam of the present invention, in which 1 shows a vitreous matrix 2.2' made of glass grains and an inorganic colorant coating layer (hereinafter simply referred to as 4 is a dense vitreous layer (hereinafter simply referred to as a dense layer) consisting of 3 (referred to as a colored layer), and 4 is a vitreous cellular layer (hereinafter simply referred to as a cellular layer). The vertical colored layer "asa" shown in FIG. 1B corresponds to "a" in FIG. 1A when viewed from above.
, a'' is visually displayed as a colored net-like portion 5.

On the other hand, since the lateral coloring agent layer b' in Figure ii B has a thickness of several tens to hundreds of μm, it is not visible in the plan view of Figure 1A, but can be seen through the multifoam layer. A rippling border between 4 and 4 is observed.

In this way, the present invention has a colored network extending three-dimensionally through the vitreous matrix, and the underlying vitreous cellular layer forms ripples, giving it an aesthetic appearance.

In the present invention, the foam layer raw material consists of glass powder with a particle size of 150 am or less, preferably 70 μm or less, or a material powder that is easily vitrified by heating and softening, and a foaming agent such as limestone, dolomite, or carbon, or Furthermore, it is prepared by appropriately mixing inorganic pigments, heat-resistant materials, etc., and granulating them using a binder if necessary.

The dense glassy layer is made of the above-mentioned multicellular interlayer-like glass material with a particle size of 0.5 nm to 511 m, and a heat-resistant inorganic pigment having a particle size of several μm to several tens of μm and exhibiting white, black, or various colors, such as iron oxide or cobalt oxide. , chromium oxide, nickel oxide, zirconium oxide, etc., or a frit glaze containing these, and by thinly coating the glass particles with thermal pigment powder or frit glaze (hereinafter simply referred to as a colorant) in an amount of about 5 wt % or less, 11! ! be done.

Specifically, for example, if glass particles and a colorant are dry mixed by a conventional means and then sieved, excess colorant is removed and glass particles thinly coated with a colorant are obtained. Alternatively, the glass particles may be immersed in a colorant dispersion and then taken out for coating.

In this case, the colored layer after heat treatment is made to have a thickness of several tens of micrometers to several hundred micrometers that can be seen through, depending on its hiding power.

That is, when looking across the colored layer from a direction perpendicular to it (FIG. 1 Bb, b'), the front side thereof can be seen through. On the other hand, when looking across the colored layer (FIG. 1 Ba, a''), it is visible as a dark line (mesh).

It should be noted that if the glass particles and the coloring agent are simply mixed, only surface irregularities are observed, and it is difficult to form a ripple pattern, and color unevenness is likely to occur, which is inconvenient.

In a preferred manufacturing method of the present invention, a pair of upper and lower endless heat-resistant belts is arranged, and the raw material for the multi-foam layer is continuously fed from a hopper onto the running lower belt to form a band of the raw material for the multi-foam layer,
On top of that, colorant-coated glass grains, which are the raw material for the dense layer, are continuously fed from another hopper to form a laminated band of the raw material for the foamed layer and the raw material for the dense layer, which is led directly to the heating furnace and sandwiched between the upper and lower belts. By foaming the raw material for the multi-foam layer under pressure, fusing the raw materials for the dense layer with each other, and fusing the dense layer and the multi-foam layer, then introducing the material into a slow cooling furnace for slow cooling, and polishing the top surface of the dense layer. Complete.

Of course, during the heat treatment, the foam layer raw material and the dense layer raw material may be sequentially stacked and filled in the heat-resistant frame and heated while being pressed with the upper lid.

When the colorant-coated glass particles, which are the raw material for the dense layer, are introduced onto the raw material for the multi-foam layer, glass particles having a particle size in the range of 0.5 to 5 mm are used to preliminarily form an uneven interface that follows the particle size. be done. When the glass particle size is less than 0.50, it is difficult to form a visually appealing ripple pattern, and when it exceeds 5111, the waveform becomes rough and is not aesthetically pleasing. During firing, the surface of the colorant-coated glass particles fuses together, and the foam layer expands and expands into the interstices of the colorant-coated glass particles in the interface area, thereby creating an occlusal interface where further welding between the glass particles is prevented. In other words, ripples are formed. On the other hand, on the upper surface of the dense layer, the glass particles are welded and degassed together with the aid of the pressing action of the belt from above, forming a dense glass layer.

At the stage after firing and slow cooling, the surface of the dense layer is covered with the coloring agent coated on the glass particles, so it is difficult to see the net pattern due to lack of transparency. However, by polishing the surface of the dense layer, a network portion in which a coloring agent is arranged in the glass particle boundaries is exposed, and a ripple pattern is seen through the interface with the foamed layer through the glass matrix.

The bulk specific gravity of the foam layer is preferably in the range of 0.2 to less than 0.8. If it is less than 0.2, it will be too fragile to be used as an interior, exterior, or exterior wall material for buildings, and if it is more than 0.8, it will impair heat insulation, reduce lightness, and be inferior in handling and workability.

On the other hand, the specific gravity of the compact layer is around 2.5 as mentioned above,
Significant differences in physical properties, particularly differences in thermal properties, occur between the two layers, resulting in distortion, etc., and even if an occlusal interface is formed between the two layers, peeling is still likely to occur. In order to prevent this, an intermediate foam layer may be provided.

The bulk specific gravity of the intermediate foam layer needs to be 0.8 or more to have good adhesion with the dense layer, and 1.8 or less to have good adhesion with the foam layer. .

The thickness of the intermediate foam layer may be 0.5 mm or more in order to interpose between the dense layer and the foam layer and improve mutual adhesion.
It is also possible to give the intermediate foam layer a coloring property by using various colored glasses or coloring agents different in color tone from the reticulated portion, and to make it visible through the dense layer.

(Example) Specific examples are shown below.

0.3wt% of commercially available calcium carbonate fine powder and 1wt% of pyrophyllite fine powder as a heat-resistant material are added and mixed to soda lime glass powder with a particle size of 270 mesh or less, compressed into agglomerates, and crushed to a diameter of around 1t1. The obtained material was prepared as a raw material for a multi-foam layer.

In addition, 0.1 wt% of commercially available calcium carbonate fine powder was added to soda lime glass powder with a particle size of 270 mesh or less, and 1 wt% of zircon sand fine powder, which was a white pigment and was used as a heat-resistant material, was added.
% was added and mixed, compressed into agglomerates, and crushed to about 1 diameter, which was prepared as a raw material for an intermediate foam layer.

Furthermore, 3 h% of a commercially available ferric oxide-based frit glaze powder with a particle size of 325 mesh or less is added to soda lime glass particles with a particle size of 10 to 16 mesh (diameter 1 to 1.6 nm).
The mixture was added and mixed as it was, and then sieved through a 2° mesh sieve to prepare glass particles as a dense layer raw material in which the glass particles were coated with about 2 wt % of frit glaze.

The raw material for the foam layer, the raw material for the intermediate foam layer, and the raw material for the dense layer were stacked in the steel mold in this order, and then a steel drop lid was set and heat treated in a heating furnace at 800°C for 30 minutes, followed by slow cooling.
Next, the sample was taken out and the surface of the dense layer was polished.

The obtained sample has a fused foam layer with a bulk specific gravity of 0.7 and a thickness of 30 m, a white intermediate foam layer with a bulk specific gravity of 1.1 and a thickness of 51 m, and a dense layer with a bulk specific gravity of 2.5 and a thickness of 2 m. The dense layer has a three-dimensional red mesh pattern made of ferric oxide on the see-through colorless glass layer, and the ripples of the white intermediate foam layer can be seen through, giving it an extremely beautiful appearance. It was something.

Even when the sample was placed in an electric furnace, heated and held at 800° C. above the glass softening point for 2 hours, no softening of the surface of the dense layer was observed, and the sample had sufficient heat resistance.

On the other hand, when a sample prepared in the same manner using only glass grains without a frit glaze as a raw material for the dense layer was heated in the same way, the glass on the surface softened and "sag" occurred.

(Effects of the Invention) The present invention provides a dense layer with a colored three-dimensional mesh pattern, and a ripple pattern at the interface with the multi-foamed layer that can be seen through, giving it an extremely decorative appearance. The layer interfaces interlock to produce an anchoring effect, suppressing peeling at the interface between the two layers, and also improving the heat resistance of the dense layer, making it suitable as a heat-resistant building material and furniture material.

[Brief explanation of the drawing]

FIG. 1A is a partial plan view of the present invention, and FIG. 1B is a side view thereof. ■--- Dense layer 2-111 glass grains 3, 111 colored layer 4-111 multicellular layer

Claims (1)

[Claims] A decorative glass comprising a dense glassy layer laminated and integrated on a glassy foam layer having a rippled upper surface, the dense glassy layer comprising a transparent glassy matrix and an inorganic colored netting. Plasma foam.