JP2001214090A - Non-adhesive coated film product, non-adhesive glass and cooking device using the same glass - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the glass for a cooking device such as a microwave oven or an oven range from fouling. SOLUTION: Stains stuck to a glass part can be easily wiped off the glass without impairing transparency when non-adhesive coated glass 7 having a non-adhesive coated film product 9 where non-adhesive materials 8 are dispersed in a coating film composed of inorganic matter as a principal ingredient is used in the door part of the oven range, or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-adhesive coating film and to prevention of stains on glass of a cooking device such as a microwave oven and a microwave oven.

[0002]

2. Description of the Related Art Conventional microwave ovens and microwave ovens are heating cookers using an electric heating device such as a microwave or a heater, and have a function of heating food. In some cases, punched metal or glass is used for the door so that the inside of the oven can be seen. FIG. 4 is a schematic sectional view of the configuration of the door unit 1 of the microwave oven.

In FIG. 4, a door portion 1 has a configuration in which a punching metal 3 is sandwiched between glass 2 inside and outside of a warehouse. The door 1 is provided with a handle 4 for opening and closing. The punching metal 3 is provided with a number of holes so that the food inside can be seen through the glass of the door.

FIG. 5 is a schematic sectional view of the internal lamp 5 for illuminating a cooking object or the like installed in a cooking device. A glass cover 6 is provided on the inside of the inside lamp 5.

[0005] In order to prevent a lighting member such as a lamp for illuminating a cooking object or the like installed in a heating cooker from dirt scattered from the cooking object or the like from the inside of the refrigerator, a glass or the like transmitting visible light is replaced by a lighting member such as a lamp. Had been provided before.

There has also been a technique of coating or laminating a fluororesin on the glass surface in order to prevent the glass from being stained.

[0007]

However, in the above-mentioned heating cooker such as a microwave oven and a microwave oven, the surface of the glass may be stained by the cooked food or the like scattered during cooking, and it is difficult to remove sticky stains. There were challenges.

Further, since the fluororesin itself has low transparency, if a fluororesin coating or laminate is used on the glass surface, the transparency is impaired, or the fluororesin has low hardness, so that the fluororesin tends to be easily scratched and peeled off, or is transparent due to scratching. There was a problem that the property was impaired.

[0009]

Means for Solving the Problems In order to solve the above problems, the non-adhesive coating material of the present invention has a constitution in which a non-adhesive substance is dispersed in a coating mainly composed of an inorganic substance. According to the present invention, a non-adhesive coating film can be formed without impairing the transparency of the base material, and dirt on the surface can be more easily removed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The non-adhesive coating film according to the first aspect has a constitution in which a non-adhesive substance is dispersed in a coating mainly composed of an inorganic substance. With the above-described configuration, a non-adhesive coating film can be formed, and dirt that has arrived on the surface can be more easily removed.

[0011] The non-adhesive glass according to claim 2 has a structure in which a non-adhesive coating material in which a non-adhesive substance is dispersed in a coating mainly composed of an inorganic substance is provided on the glass surface. With the above configuration, a non-adhesive coating film can be formed on the glass surface without impairing the transparency of the substrate, and dirt on the surface can be more easily removed.

[0012] In the non-adhesive coating material and the non-adhesive glass according to claim 3, the coating mainly composed of an inorganic material is silicon, boron, titanium, aluminum, zirconium, germanium, lithium, sodium, iron, gallium, magnesium. , Phosphorus, antimony, tin, tantalum, vanadium oxides, sulfides, hydroxides, or composites thereof. According to the above configuration, a non-adhesive coating film can be formed without impairing the transparency of the base material, and dirt on the surface can be more easily removed.

In the non-adhesive coating material and the non-adhesive glass according to the fourth aspect, a fluororesin or a fluororesin composite is used as the nonadhesive substance. According to the above configuration, a non-adhesive coating film can be formed without impairing the transparency of the base material, and dirt on the surface can be more easily removed.

In the non-adhesive coating material and the non-adhesive glass according to the fifth aspect, the thickness of the non-adhesive coating material is set to a thickness not exceeding 2.0 μm. According to the above configuration, a non-adhesive coating film can be formed without impairing the transparency of the base material, and dirt on the surface can be more easily removed.

The non-adhesive coating material and the non-adhesive glass according to claim 6 have a constitution using a non-adhesive substance having a size not exceeding 0.5 μm. According to the above configuration, a non-adhesive coating film can be formed without impairing the transparency of the base material, and dirt on the surface can be more easily removed.

[0016] In the heating cooker according to claim 7, claim 2 is provided.
7. A configuration using the non-adhesive glass according to any one of the above items 6 to 6. With the above-described configuration, a heating cooker having a non-adhesive coating film formed on its surface can be obtained without impairing the transparency of the glass, and it is possible to more easily remove dirt attached to the glass surface of the heating cooker. it can.

[0017] In the heating cooker according to claim 8, claim 2 is provided.
7. The non-adhesive glass according to any one of the items 6 to 6 is used for a door portion. With the above-described configuration, a non-adhesive coating film can be formed on the surface of the door portion without impairing the transparency of the glass, and dirt attached to the glass surface of the door portion can be more easily removed. .

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG. 1 is a sectional view of a non-adhesive glass according to a first embodiment of the present invention. The components having the same reference numerals as those of the conventional example have the same structure, and detailed description will be omitted.

In FIG. 1, 2 is a glass, 7 is a non-adhesive glass, 8 is a non-adhesive substance, and 9 is a non-adhesive coating. The glass 2 used was soda glass thermally strengthened.

The non-adhesive coating material 9 is prepared by adding PTFE (polytetrafluoroethylene) as a non-adhesive substance 8 to a solution containing silicon alkoxide as a main component in a butyl alcohol solvent.
Is spray-coated on glass and fired at 300 ° C. for 10 minutes to form a film having a thickness of about 1 μm. Thus, a non-adhesive glass 7 having a non-adhesive coating material 9 in which fluororesin particles were dispersed as a non-adhesive substance 8 in a silica coating was formed.

The dirt adhering to the non-adhesive coating 9 of the present embodiment was easy to wipe off, but when the non-adhesive coating 9 was not provided, the dirt adhered and was difficult to wipe off. . This is presumably because the fluororesin particles as the non-adhesive substance 8 were dispersed on the surface of the non-adhesive coating material 9 and the fluororesin particles appeared on the coating surface, so that dirt was hardly adhered. .

When the contact angle of water on the surface of the non-adhesive coating material 9 of the non-adhesive glass 7 was measured, it was 110 ° before the initial heat treatment, but was changed to 300 ° C. for 100 hours after the heat treatment. When the contact angle of water was measured, it was almost the same as 109 °, indicating that the heat resistance was high.

On the surface of the non-adhesive coating 9 treated on the glass 2, 10 μl of a 1: 1 mixture of sugar and soy sauce was dropped, baked at 250 ° C. for 30 minutes, and then wiped with a wet cloth. As a result, the burnt dirt was wiped off with a wet cloth, whereas the glass without the non-adhesive coating 9 was burned and could not be wiped off.

In the present embodiment, the particle diameter of the fluororesin particles as the non-adhesive substance 8 was set to 0.5 μm or less.
The reason for this is that if the particle size is larger than 0.5 μm, the transparency is lost, and the dispersibility in the coating film becomes poor, and the non-adhesiveness is reduced. The particle size is 0.01 μm
If the diameter is smaller, dispersion in the coating film becomes difficult, and the non-adhesiveness decreases, which is not desirable. From the viewpoint of transparency and non-adhesion, the average particle size is desirably 0.03 to 0.1 μm.

The thickness of the non-adhesive coating material 9 is 2 μm
Is preferable. If the thickness exceeds 2 μm, it becomes difficult to form a coating film. The thickness is preferably from 0.1 μm to 1.0 μm from the viewpoint of forming a coating film and transparency and non-adhesion.

The firing temperature is preferably from 150 ° C. to 350 ° C. If it exceeds 350 ° C., the coating film becomes cloudy and the transparency is lost. When the temperature is lower than 150 ° C., the coating film is insufficiently cured. It is desirable to bake at 200 ° C to 300 ° C from the viewpoint of coating film hardness, non-adhesion, and transparency.

Further, since the fluororesin itself has low transparency, the use of a fluororesin coating on the glass surface impairs the transparency. When the thickness of the fluororesin is reduced, the transparency is improved. However, the fluororesin coating has a low hardness and is easily damaged, and thus cannot be used.

A silica coating formed by a sol-gel method was used as a coating mainly composed of an inorganic substance. However, boron, titanium, aluminum, zirconium, germanium, lithium, sodium, iron, gallium, magnesium, phosphorus, antimony, tin The same effect can be obtained by using oxides, sulfides, hydroxides of vanadium, tantalum or vanadium, or a composite thereof. Further, the coating mainly composed of an inorganic substance does not prevent inclusion of an organic component such as a silane coupling agent.

In this embodiment, PTFE (polytetrafluoroethylene) is used as the fluororesin particles as the non-adhesive substance 8, but tetrafluoroethylene-
Perfluoroalkyl vinyl ether copolymer (PF
A), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), tetrafluoroethylene-ethylene copolymer (E / TFE), polychlorotrifluoroethylene (PCTFE), chlorotrifluoroethylene-ethylene copolymer ( ECTFE) polyvinylidene fluoride (PVDF), polyvinyl fluoride (P
VF) or a mixture of the above-mentioned fluororesins can also be used.

Although the fluororesin particles are used as the non-adhesive substance 8, particles which are compounded with a silicone resin, a polyimide resin, a polyparabanic acid resin or the like may be used.

As the non-adhesive substance 8, particles obtained by coating a fluororesin and a fluororesin composite on inorganic particles may be used.

Although soda glass is used as the glass, other glass such as borosilicate glass may be used.

In this embodiment, the non-adhesive coating 9 is used on one side of the glass 2, but this does not prevent the use of the non-adhesive coating on both sides. By using it on both sides of the glass 2, dirt on both sides can be prevented.

(Embodiment 2) Next, a second embodiment of the present invention will be described. FIG. 2 is a cross-sectional view of an internal lamp of a microwave oven that is a heating cooker, and FIG. 3 is a cross-sectional view of a door portion of the microwave oven.

The components having the same reference numerals as those of the conventional example and the first embodiment have the same structure, and the detailed description is omitted.

As shown in FIG. 2, a non-adhesive glass 7 was used as a cover for the lamp in the oven in order to make it difficult for the lamp 5 in the oven (heating cooker) to be soiled by foods or the like. . On the surface of the non-adhesive glass 7, the glass 2
Is provided with a non-adhesive coating 9. Interior lamp 5
Is stained with oil or the like from cooking products, etc., and the present invention makes it easier to wipe off the stain.

As shown in FIG. 3, in order to make it difficult for the glass 2 of the door portion 1 of the microwave oven (heating cooker) to be soiled from the food or the like, the inside of the door portion 1 (the punching metal 3 is removed). A non-adhesive glass 7 was used on the surface of the glass 2 on the opposite side of the handle 4 between the two.

Further, on the surface of the non-adhesive glass 7, a non-adhesive coating 9 is provided on the surface of the glass 2. Door part 1
Although the surface of the glass inside the container is stained with oil or the like coming out of the food, the present invention makes it easier to wipe off the stain.

Although the non-adhesive glass 7 is used for the cover of the door portion 1 and the lamp 5, it is also possible to install it as a viewing window on the inner surface of the cooking device.

Although the non-adhesive coating material 9 is used inside the oven of the door portion 1 of the microwave oven, the stain prevention effect can be obtained even if the non-adhesive coating material 9 is provided on the glass outside the oven. it can.

Further, in this embodiment, the case of the microwave oven has been described. However, when the microwave oven is used for a door of a microwave oven or a heating cooker such as an electric oven, dirt can be easily wiped off.

[0043]

As described above, according to the first aspect of the present invention,
The non-adhesive coating is made by dispersing a non-adhesive substance in a coating mainly composed of an inorganic material, so that a non-adhesive coating can be formed and stains on the surface can be easily removed. You can drop it.

According to the second aspect of the present invention, since the non-adhesive coating film in which the non-adhesive substance is dispersed in the coating film containing an inorganic material as the main component is formed on the glass, the transparency of the glass is improved. The stains on the glass surface can be easily removed without impairing the properties.

Further, according to the invention of claim 7, a non-adhesive glass having a non-adhesive film formed on a glass and having a constitution in which a non-adhesive substance is dispersed in a coating mainly composed of an inorganic material, Since the present invention is used for a heating cooker, it is possible to provide a heating cooker having a glass in which dirt such as a cooking object is not easily adhered and glass which is easy to wipe off without impairing transparency.

According to the eighth aspect of the present invention, a non-adhesive glass in which a non-adhesive film having a constitution in which a non-adhesive substance is dispersed in a coating mainly composed of an inorganic material is formed on a glass, Since it is used for the door portion of the heating cooker, it is possible to provide a heating cooker having a glass which is easy to wipe and which is not easily adhered to dirt such as cooked food without impairing transparency.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a non-adhesive glass according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of an internal lamp of a microwave oven according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a door portion of the microwave oven.

FIG. 4 is a cross-sectional view of a configuration of a door portion of a conventional microwave oven.

FIG. 5 is a cross-sectional view of a configuration of a lamp in a refrigerator of a conventional heating cooker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door part 7 Non-adhesive glass 8 Non-adhesive substance 9 Non-adhesive coating material

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) F24C 7/02 521 F24C 7/02 521B 15/04 15/04 A F-term (Reference) 3L086 AA01 BB15 BC01 DA08 DA18 4G062 AA08 AA09 AA15 BB01 DA02 DB02 DC02 DD02 DE01 DF01 EA02 EB02 EC01 ED02 EE01 EF01 EG01 FA01 FB02 FC02 FD02 FE02 FF02 FG01 FH02 HJ01 FK01 FL01 GA01 GB02 GC01 GD01 GE01 HHH HH HH HH HH HH HH JJ05 JJ07 JJ10 KK01 KK03 KK05 KK07 KK10 MM05 NN40 PP14 4J038 AA011 CD102 HA161 HA171 HA181 HA351 HA381 HA431 HA471 PB02 PB09 PC03

Claims (8)

[Claims] 1. A non-adhesive coating material in which a non-adhesive substance is dispersed in a coating mainly composed of an inorganic substance. 2. A non-adhesive glass having a non-adhesive coating material in which a non-adhesive substance is dispersed in a coating mainly composed of an inorganic substance. 3. A coating comprising an inorganic material as a main component, comprising silicon, boron,
Titanium, aluminum, zirconium, germanium,
Lithium, sodium, iron, gallium, magnesium,
3. The non-adhesive coating film and the non-adhesive glass according to claim 1 or 2, comprising an oxide, sulfide, hydroxide or a compound thereof of phosphorus, antimony, tin, tantalum or vanadium. 4. The non-adhesive coated article and the non-adhesive glass according to claim 1, wherein a fluororesin or a fluororesin composite is used as the non-adhesive substance. 5. The non-adhesive coating and the non-adhesive glass according to claim 1, wherein the thickness of the non-adhesive coating does not exceed 2.0 μm. 6. The non-adhesive coated article and non-adhesive glass according to claim 1, wherein a non-adhesive substance having a size not exceeding 0.5 μm is used. 7. A heating cooker using the non-adhesive glass according to any one of claims 2 to 6. 8. A cooking device using the non-adhesive glass according to claim 2 for a door.