JP2007204841A - Glass coat material, its production method, and cooking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass coat material provided with a mica-tone or metallic-tone light reflective coating structure with a depth giving a feeling of depth, having excellent designing properties and exhibiting a luster effect, and to provide its production method. <P>SOLUTION: In the glass coat material, many light reflective members 31 mainly composed of mica fine particles 3a are dispersedly arranged on the surface of a colored glass substrate layer 2 provided on a base material 1 and the surface thereof is coated with a transparent glass surface layer 4. As the example of the base material 1, the one obtained by beforehand applying the conventional black ground coat layer 21 comprising nickel as an adhesive component to a steel sheet 11 for porcelain enamelling can be cited. As the transparent glass surface layer 4, the one subjected to low temperature baking at a baking temperature lower than that of the colored glass substrate layer 2 and also at ≤800°C as a glass layer is preferable. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a glass coating material in which a glassy surface layer is provided on a base material such as metal, a method for producing the same, and a cooking device using the glass coating material for a top plate. The present invention relates to a glass coating material having a dispersed vitreous surface layer.

  Conventionally, Patent Documents 1 to 3 have been proposed as metallic adjustment products. The material described in Patent Document 1 is obtained by sequentially forming an undercoat layer, an intermediate overcoat layer, and a transparent metallic overcoat layer to which metal mica-coated powder mica is added on an iron plate. Since this product is provided with an intermediate saddle layer, the number of steps is increased and the manufacturing cost is increased, and the metallic effect is flat and the design property is poor.

The material described in Patent Document 2 includes a mica layer in an upper cocoon layer in a cocoon product composed of a lower cocoon layer and an upper cocoon layer. Moreover, the material of patent document 3 is trying to suppress the melting | dissolving of a mica by mixing a mica powder heterogeneously in the upper cocoon slurry in the cocoon product which consists of a lower cocoon layer and an upper cocoon layer. In any case, since the mica powder is mixed and dispersed in the glaze, it is difficult to suppress melting into the glaze during baking, so there is a problem that the metallic shine is reduced, and the resulting metallic The tone effect of the tone was also flat.
JP-A-1-149975 (Japanese Patent Publication No. 6-53936) JP-A-4-325438 (Patent No. 3001018) JP 2001-342581 A

  The present invention has been made to solve the above-mentioned problems, and has a deep mica-like or metallic light-reflective coating structure that gives a feeling of depth, and the brightness of the light-reflecting member made of mica is observed by the observer. Provided are a glass coating material exhibiting a glitter effect excellent in design properties that changes depending on the position of the glass, and a method for producing the same. Furthermore, the cooking device provided with the top plate excellent in the design using the glow effect which was not obtained with the conventional candy product is provided.

The above problem can be solved by the glass coating material according to the first invention.
That is, in the glass coating material of the first invention, a light reflecting member mainly composed of mica fine particles is dispersed on the surface of the colored glass underlayer provided on the base substrate, and the surface thereof is covered with a transparent glass surface layer. It is characterized by this. In the present invention, the transparent glass surface layer has a temperature lower than the baking temperature of the colored soot forming the colored glass underlayer, and is melt-formed as a transparent glass surface layer at a baking temperature of 800 ° C. or less. Embodied in

  Further, in the present invention, the base substrate is a steel plate for enamel coated with a hollow enamel containing nickel, and the colored glass underlayer is a black glass underlayer mainly composed of a black pigment and transparent glass. It is also possible to embody the form, and the form in which the enamel lower arm also serves as the black glass underlayer is also preferable.

  In a more preferred embodiment, the light reflecting member is formed from one or a plurality of scaly powder mica fine particles having a plane portion having a major axis of 50 to 150 μm, and the light reflecting member is disposed on the colored glass underlayer. Are dispersed in a state where they are interspersed with a gap, and are interposed between the colored glass underlayer and the transparent glass surface layer.

Moreover, said problem can be solved by the manufacturing method of the glass coating material which is the following 2nd invention.
That is, the manufacturing method of the glass coating material according to the second invention is the manufacturing method of the glass coating material according to the first invention, in which a colored glass base layer is baked and formed on a base substrate, and then mainly from mica fine particles. The light reflecting member is dispersed and disposed thereon, and a slip mainly composed of a transparent frit for forming a transparent glass surface layer is coated thereon, and the colored glass underlayer is at a temperature lower than the baking temperature, 800 The substrate is baked at a temperature of not higher than ° C., and the light reflecting member is sandwiched between the colored glass underlayer and the transparent glass surface layer, and is integrally baked onto the base substrate.

  In this second invention, it is preferable that the slip mainly composed of the transparent frit for forming the transparent glass surface layer is composed of a composition not containing finely divided clay, and the major axis of the planar portion is 50 to 150 μm. An aqueous slip containing flaky mica fine particles and a binder is sprayed by air spraying on the surface of the colored glass underlayer that has been previously baked and formed in a state where a gap is provided, and the portion of the colored glass underlayer is formed from the gap. The form in which the mica fine particles are arranged in a visually observable state is particularly preferable.

  Moreover, said problem can be solved with the cooking appliance which is the following 3rd invention. That is, the cooking device according to the third invention is characterized in that the glass coating material according to the first invention is assembled as a top plate of a cabinet incorporating heating means, and the heating means is a gas burner. The top plate is preferably embodied in a form in which a burner hole for a gas burner is formed.

  The glass coating material of the first invention is configured by dispersing and arranging light reflecting members mainly made of mica fine particles between the colored glass underlayer provided on the base substrate and the transparent glass surface layer. The external light is incident from the surface transparent glass surface, the reflected light from the underlayer is observed as the background color, and the part with the incident light is reflected from the surface of the light reflecting member made of scaly mica. The effect of light is shining in a mica-like or metallic tone, and the reflected light is observed through the transparent glass surface. An excellent glow effect that makes the effect perceived is obtained.

  In the present invention, the light reflecting member is made of mica fine particles of scaly powder having a plane portion with a major axis of 50 to 150 μm, and is provided in a state of being interspersed with a gap between them on a glass substrate layer colored in black. In this case, the combination of the lacquer black background color based on the light absorption of the black glass underlayer and the glitter effect by the mica fine particles has an effect that the synergistic effect is particularly excellent. In addition, the light reflecting member has a design in which the brightness of the light reflecting member made of mica arranged on the base substrate with the mica plane being parallel and slightly inclined at a random angle changes depending on the position of the observer. A glass coating material having a luminous effect with excellent properties can be obtained.

  In addition, since the glass coating material of the present invention is vitrified as a whole, scratches and abrasion scratches are less likely to occur, and it does not deteriorate or fade in a short time like an organic paint film. Since it has heat resistance that cannot be obtained, it can be preferably used as a highly durable material as a surface material for easily contaminated parts, hot parts, for example, table tops of gas ranges and electric ranges.

  And according to the manufacturing method of the second invention, the mica fine particles are not mixed in the glaze, and since the baking temperature is relatively low such as 800 ° C. or less, the baking is performed in the transparent glass surface layer during baking. Since the mica fine particles are prevented from melting, the glow effect of the mica fine particles is not deteriorated.

Further, by air spraying an aqueous slip containing scaly mica fine particles and a binder, it is possible to spray the glass underlayer in a scattered manner, so that there is an advantage that the preferred light reflecting member described above can be easily formed. can get.
Thus, according to the production method of the second invention, the glass coating material of the first invention excellent in luminous effect can be produced industrially, and can be provided in a field of use utilizing its performance.

Furthermore, according to the cooking device of the third invention, since the glass coating material of the first invention is used for the top plate (surface material of the table top), it is difficult to be scratched or worn and deteriorated like an organic paint. In addition to the advantages unique to conventional cocoon products, such as heat resistance unique to non-combustible materials, it does not fade, and it can exhibit a brilliant design effect that was not possible with conventional cocoon products. A vessel can be provided.
Therefore, the present invention has a very large industrial value as a glass coating material, a manufacturing method thereof, and a cooking device that have solved the conventional problems.

Next, an embodiment according to the glass coating material of the present invention and an embodiment of the glass coating material manufacturing method of the present invention will be described with reference to FIGS.
(First invention: Glass coating material)
The basic structure of the glass coating material of the present invention is such that a large number of light reflecting members 31 mainly composed of mica fine particles 3a are dispersed on the surface of a colored glass base layer 2 provided on a base substrate 1, Is coated with a transparent glass surface layer 4. In the example of FIG. 1, the base substrate 1 is exemplified by a conventional black undercoating layer 21 containing nickel as an adhesion component on a hollow steel plate 11 in advance.

  And the said transparent glass surface layer 4 is an important component in this invention, The baking temperature is lower than the baking temperature of the said colored glass base layer 2, and is a glass layer at the temperature of 800 degrees C or less. Those formed by melting are preferred. Further, in order to obtain a deep glow effect, the thickness is preferably set to 10 μm or more, more preferably 30 μm or more.

  In the present invention, by using the relatively thick transparent glass surface layer 4 in this way, incident light from the outside and reflected light from the colored glass underlayer 2 and the many light reflecting members 31 are reflected on the surface of the transparent glass surface layer 4. By refracting, there is an advantage that a deep glow effect that gives a depth sensation as if looking at an underwater object can be obtained.

  As described above, since the transparent glass surface layer 4 is required to have high transparency, it is not preferable that the surface has irregularities because the transparency is impaired. In the present invention, the smoothness of the surface of the transparent glass surface layer 4 is preferably such that the surface roughness Ry defined in JIS-B0601-1994 is 25 μm or less, more preferably 2.0 μm or less.

Next, the most characteristic light reflecting member 31 of the present invention will be described.
The mica fine particles 3a used in the present invention, which is the causative substance of the glow effect, are originally obtained as a scaly powder having a thickness of about 50 μm or less. In the present invention, the average major axis of the planar portion is adjusted in particle size. It is preferable to use particles having a size in the range of 50 to 150 μm because the desired glow effect of the present invention can be easily obtained.

And it is especially preferable that the dispersed state of these mica fine particles 3a is in a state of being dispersed in fine spots as illustrated in FIG.
That is, a large number of flat objects formed from one or a plurality of mica fine particles 3a are dispersed on the colored glass base layer 2 in a state where gaps 32 are provided between the colored glass underlayers 2 and below the colored glass. It arrange | positions between the base layer 2 and the transparent glass surface layer 4, and is comprised so that it may act as the light reflection member 31 after being baked.
Thus, the light reflecting member 31 is arranged in a state in which the portion of the colored glass underlayer 2 is visible from the gap 32, and does not completely cover the colored glass underlayer 2.

  In this structure, external light is incident through the transparent glass surface layer 4, and reflected light from the base layer 2 is observed as a background color through the gap 32. Moreover, in the case of the black base layer 2, it is observed as a black background color by light absorption. Further, the incident light is reflected from the surfaces of the many light reflecting members 31 made of the mica, and exhibits a glitter effect that shines in a mica-like or metallic tone.

  Furthermore, since the surface of the mica fine particles 3a of the light reflecting member 31 is inclined in a random direction at a slight angle with respect to the base, the shine of the reflected light changes according to the position of the observer. It also exhibits an excellent glow effect. Furthermore, in the case of the light reflecting member 31 composed of a plurality of mica fine particles 3a, the light effect is further promoted because the light reflecting member 31 is observed as a visually bright large spot.

(Second invention: Method for producing glass coating material)
Next, the manufacturing method of the glass coating material of this invention is demonstrated.
The present invention is the above-described method for producing a glass coating material of the first invention, wherein the light reflecting member 31 is sandwiched between the colored glass base layer 2 and the transparent glass surface layer 4 using the following three steps as basic steps. This is characterized in that it is integrally baked on the base substrate.
a) A base preparation step in which a black colored glass base layer 2 is preferably baked and formed on the steel plate itself or the base substrate 1 having a steel plate surface subjected to enamel brazing.
b) A reflecting member arranging step in which the light reflecting member 31 mainly composed of the mica fine particles 3a is dispersed and arranged on the surface of the colored glass base layer 2.
c) A surface layer forming step of forming a transparent glass surface layer 4 by coating a slip mainly composed of a transparent frit and firing the colored glass underlayer 2 at a temperature lower than the baking temperature and at a temperature of 800 ° C. or lower.

(Preparation process)
In the example of FIG. 1, the base substrate 1 is obtained by applying a conventional black undercoat layer 21 containing nickel as an adhesion component to a hollow steel plate 11 in advance, and a colored glass underlayer 2 is baked thereon. Therefore, conventional methods are applied. Moreover, if it is suitable as a background color, the colored glass base layer 2 can also be used with the black undercoat layer 21. An appropriate baking temperature for the colored glass underlayer 2 is preferably selected to be 830 ° C. or higher from the relationship with the baking temperature of the transparent glass surface layer described later.

(Reflective member placement process)
In order to arrange the mica fine particles constituting the reflecting member 31 on the surface of the colored glass base layer 2, a method of spraying an aqueous slip containing mica fine particles and a binder by air spray is preferably employed. In this case, the aqueous slip is preferably a slip in which 100% of water contains 10% or less of mica fine particles, preferably 5% or less, and an appropriate amount of a binder.

  As the mica fine particles, those whose particle size is adjusted in the range of an average major axis of the plane portion of 50 to 150 μm are preferable. This mica fine particle is a mineral that is originally available as a scaly powder having a thickness of about 10 μm or less. In addition to colorless fine particles obtained by adjusting the particle size of the mineral itself, there is also a color processed with titania added to the surface. Any of these can be applied to the present invention.

  A particularly important point in this reflecting member arranging step is that the mica slip is sprayed on the surface of the colored glass base layer 2 previously baked and formed with the gaps 32 provided as shown in the illustration of FIG. Then, the mica fine particles 3a are arranged in such a state that the colored glass underlayer 2 can be visually observed from the gap 32.

  In order to realize such a dispersed state, the mica content of the aqueous slip described above is an important factor, and if the content is within the above-mentioned range, the mica fine particles can be dried by spraying. 3a can be fixed by a binder in a state of being dispersed on the surface of the colored glass underlayer 2 and in conformity with the shape of the surface of the colored glass underlayer 2, that is, a wide plane portion of the mica fine particles is directed generally upward. It is. In this case, the wide planar portion of the dispersed mica fine particles is inclined with the direction being slightly biased naturally and randomly depending on the shape of the surface of the colored glass underlayer 2.

(Surface layer forming step)
After passing through the above steps, a slip mainly composed of a transparent frit is coated and baked under the temperature condition to form a transparent glass surface layer 4, and the colored glass underlayer 2 and the transparent glass surface layer 4 are interposed between the light The reflective member 31 is sandwiched and integrated.
In this case, in order to obtain a deep glow effect, the thickness of the transparent glass surface layer 4 is preferably set to 10 μm or more, more preferably 30 μm or more.

  Further, in order to obtain the luminous effect of the light reflecting member 31 more effectively, the transparent frit for forming the transparent glass surface layer 4 or the slip thereof does not contain a component that inhibits transparency or a mill additive. This is very important. For example, the transparent frit itself should not contain any components that tend to cause emulsion such as titania, zirconia, and fluorine, and the mill additive should not contain clay (kaolin, montmorillonite, etc.). preferable. Instead of clay, colloidal silica or the like may be used.

Thus, according to the second invention, the glass coating material of the first invention described in detail above can be produced industrially.
Although the operational effects of the first invention have already been described in detail, according to the manufacturing method of the second invention, the background color is observed particularly by the reflected light and light absorption from the base layer 2 through the gap 32 between the light reflecting members 31. The surface of the mica fine particles 3a of the light reflecting member 31 is used as a base when the reflected light from the surface of the many light reflecting members 31 made of mica fine particles exhibits a glittering effect in a mica-like or metallic tone. On the other hand, since it can be arranged so as to incline in a random direction at a slight angle, it has the advantage of exhibiting a luminous effect with excellent design that the brightness of reflected light changes depending on the position of the observer is there.

(Third invention: cooker)
FIG. 3 shows an example of the cooking device of the present invention. The first invention is a top plate 51 which is a top plate of the cabinet 5 having a built-in heating gas device having a gas burner 6 and provided with ignition adjustment buttons 62 on the front surface. The glass coating material is applied. In this case, it is preferable that a burner hole 52 for exposing the gas burner 6 is formed and a positioning (not shown) is provided so that the five virtues 61 are arranged. Further, a glass coating material that is bent in advance may be applied to the four peripheral portions of the top plate 51, but it is preferable to protect the frame shape with a frame material made of stainless steel. In addition,
Here, although the gas range was illustrated, it is applicable also with an electric range.

  Thus, according to the cooker of the present invention, it is possible to exhibit the wear resistance, corrosion resistance, heat resistance, etc., which are the features of the glass coat material used for the top plate, as well as specific to the glass coat material of the present invention. An excellent metallic glow effect can be achieved, providing a more attractive cooker that cannot be obtained with conventional candy products.

The principal part cross-sectional conceptual diagram for demonstrating the glass coat material of this invention. Sectional illustrations for demonstrating the light reflection member of the glass coat material of this invention. The principal part perspective view which shows the cooking device of this invention.

Explanation of symbols

1: base substrate, 11: steel plate for enamel 2: colored glass underlayer, 21: black undercoat layer 3a: mica fine particles, 31: light reflecting member, 32: gap 4: transparent glass surface layer

Claims (11)

  A glass coating material, characterized in that a light reflecting member mainly composed of mica fine particles is dispersed and arranged on the surface of a colored glass underlayer provided on a base substrate, and the surface thereof is covered with a transparent glass surface layer.   The said transparent glass surface layer is lower than the baking temperature of the colored soot which forms the said colored glass base layer, Comprising: It is melt-formed as a transparent glass surface layer at the baking temperature of 800 degrees C or less. Glass coating material.   The base substrate is a steel plate for enamel coated with a hollow enamel containing nickel, and the colored glass underlayer is a black glass underlayer mainly composed of a black pigment and transparent glass. The glass coating material described.   The glass coating material according to claim 3, wherein the enamel lower arm serves also as the black glass underlayer.   The light reflecting member is formed of one or a plurality of scaly powdered mica fine particles having a plane portion having a major axis of 50 to 150 μm, and the light reflecting member is provided with a gap between the colored glass base layers. The glass coating material according to any one of claims 1 to 4, wherein the glass coating material is dispersed in a scattered state and interposed between the colored glass underlayer and the transparent glass surface layer.   The glass coating material according to any one of claims 1 to 5, wherein the surface smoothness of the transparent glass surface layer has a surface roughness Ry of 2.0 µm or less.   It is a manufacturing method of the glass coating material in any one of Claims 1-6, Comprising: A colored glass base layer is baked and formed on a base base material, Then, the light reflection member mainly consisting of mica fine particles is disperse | distributed. And a slip mainly composed of a transparent frit for forming a transparent glass surface layer is coated thereon, and the colored glass underlayer is baked at a temperature lower than the baking temperature and not higher than 800 ° C. A method for producing a glass coating material, wherein the light reflecting member is sandwiched between the colored glass base layer and the transparent glass surface layer and integrally baked on a base substrate.   The method for producing a glass coating material according to claim 7, wherein a slip mainly composed of a transparent frit for forming the transparent glass surface layer is composed of a compound containing no clay.   An aqueous slip containing scaly mica fine particles having a major axis of 50 to 150 μm and a binder is sprayed by air spraying on the surface of the colored glass underlayer formed by baking in advance in a state where gaps are provided and the gaps are formed. The manufacturing method of the glass coating material of Claim 7 or 8 which arrange | positions mica microparticles in the state in which the part of a colored glass base layer is visible.   A cooking device, wherein the glass coating material according to any one of claims 1 to 6 is assembled as a top plate of a cabinet incorporating a heating means.   The cooker according to claim 10, wherein the heating means is a gas burner, and a burner hole for exposing the gas burner is formed in the top plate.

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