JP2001070172A - Heat cooking plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance durability and rust peventiveness by providing the above plate with a metallic sheet, a corrosion preventive layer formed thereon and heat resistant resin layer formed thereon. SOLUTION: This heat cooking plate has the metallic sheet 10, the corrosion preventive layer 11 formed thereon and the heat resistant resin layer 12 formed thereon. A sheet consisting of iron, stainless steel or aluminum, a steel sheet plated with zinc or aluminum, or galvanium steel sheet is used for the metallic sheet 10. The corrosion preventive layer 11 is a layer to prevent the corrosion of the metallic sheet 10, for which ceramics, cermet, metal oxide or metals having the high corrosion resistance are used. The average thickness of the corrosion preventive layer 11 is confined to >=10 to <=60 μm, and thereby the heat cooking plate having particularly high durability and rust preventiveness may be obtained. The heat resistant resin layer 12 is a layer for preventing the scorching of food, for which a fluororesin and silicone resin are used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a cooking plate used for cooking.

[0002]

2. Description of the Related Art Conventionally, a heating plate used for a baking mold, a frying pan, an electric rice cooker, or the like has been a metal plate coated with a heat-resistant resin to prevent scorching or the like. As such a conventional cooking plate, for example, a plate obtained by coating a heat-resistant resin such as a fluororesin on a metal plate made of iron, stainless steel, aluminum, or the like is known.

[0003]

However, in general, since the cooking plate is heated to a temperature of several hundred degrees in the presence of water or the like, the above-mentioned conventional cooking plate has a long term. There is a problem that the durability and rust prevention are not sufficient.

[0004] For example, in the above-mentioned conventional cooking plate, steam generated during heating cooking enters between the heat-resistant resin and the metal plate from minute scratches or cracks formed in the heat-resistant resin, There is a problem that the metal plate is corroded.

[0005] When the metal plate is corroded in this manner, there is a problem that the food is easily burnt when heated, and the heat-resistant resin is easily peeled off.

[0006] In order to solve the above-mentioned problems, an object of the present invention is to provide a cooking plate excellent in long-term durability and rust prevention.

[0007]

In order to achieve the above object, a cooking plate of the present invention is a cooking plate used for cooking, comprising a metal plate and an anticorrosion layer formed on the metal plate. And a heat-resistant resin layer formed on the anticorrosion layer. In the cooking plate of the present invention, since the corrosion of the metal plate is suppressed by the anticorrosion layer, a cooking plate having high durability and rust prevention can be obtained.

[0008] In the above cooking plate, it is preferable that the anticorrosion layer is made of ceramics or an alloy. According to the above configuration, a cooking plate having particularly high durability and rust prevention can be obtained.

In the above cooking plate, the anticorrosion layer is made of titanium dioxide, a nickel-aluminum alloy (Ni-Al alloy) and a nickel-aluminum-chromium alloy (Ni
-Al-Cr alloy). According to the above configuration, a heat-cooking plate can be obtained in which the adhesive strength between the anticorrosion layer and the heat-resistant resin layer is increased and the heat-resistant resin layer is not easily peeled off.

[0010] In the above cooking plate, the heat-resistant resin layer comprises:
It is preferable to include at least one resin selected from a fluorine-based resin and a silicon-based resin. According to the above configuration, a highly durable cooking plate can be obtained.

In the above cooking plate, it is preferable that the anticorrosion layer is an anticorrosion layer formed by a thermal spraying method. By forming the anticorrosion layer by the thermal spraying method, the metal plate and the anticorrosion layer can be firmly fixed. Further, by forming the anticorrosion layer by the thermal spraying method, it is possible to form the anticorrosion layer having an uneven shape on the surface, thereby increasing the adhesive strength between the anticorrosion layer and the heat-resistant resin layer, and also having high abrasion resistance. A plate is obtained.

In the above-mentioned cooking plate, it is preferable that the average thickness of the anticorrosion layer is not less than 10 μm and not more than 60 μm. By setting the average thickness of the anticorrosion layer to 10 μm or more, a cooking plate having particularly high durability and rust prevention can be obtained. Further, by setting the average thickness of the anticorrosion layer to 60 μm or less, it is possible to prevent the anticorrosion layer from becoming brittle and peeling.

[0013]

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

FIG. 1 is a partial cross-sectional view of one example of the cooking plate of the present invention.

Referring to FIG. 1, the cooking plate of the present invention comprises:
Metal plate 10 and anticorrosion layer 11 formed on metal plate 10
And a heat-resistant resin layer 12 formed on the anticorrosion layer 11. The cooking plate of the present invention is used for heating the metal plate 10 with a fire, a heating wire, an electromagnetic coil, or the like, and cooking the food on the heat-resistant resin layer 12.

As the metal plate 10, metal plates made of various metal materials can be used. For example, metal plate 1
For 0, a plate made of iron, stainless steel or aluminum, a steel plate plated with zinc, a steel plate plated with aluminum or a galvanium steel plate can be used. Among these, it is preferable to use a steel plate plated with zinc, a steel plate plated with aluminum, or a galvanium steel plate because it is low in cost, resistant to thermal deformation and excellent in durability.

The anticorrosion layer 11 is a layer for preventing corrosion of the metal plate 10 and is made of a material having high corrosion resistance. For example, the anticorrosion layer 11 includes ceramics, cermet,
Metal oxides or metals (including alloys) can be used.

Specifically, as the anticorrosion layer 11, ceramics such as alumina, zirconia, titanium dioxide, spinel, tungsten carbide, titanium carbide or boron nitride, a mixture thereof, or a mixture of these and a metal can be used. . As the anticorrosion layer 11, a mixture of Al ₂ O ₃ and Ni or Cr, Z
a mixture of and rO ₂ and Ni or Cr, a mixture of WC and Co, a mixture of WC and Ni or Al, and BN Ni-
A mixture with Cr-Fe-Al or the like may be used. Further, as the anticorrosion layer 11, a Ni-Al alloy, a Ni-Cr alloy, or a Ni-Al-Cr alloy may be used. Also,
As the anticorrosion layer 11, a metal such as aluminum, zinc, nickel, tin, and copper may be used.

Among them, it is particularly preferable that the anticorrosion layer 11 contains at least one selected from titanium dioxide, Ni-Al alloy and Ni-Al-Cr alloy. For example, as the anticorrosion layer 11, a mixture of titanium dioxide and alumina can be used. When the anticorrosion layer 11 contains titanium dioxide, the adhesive strength between the anticorrosion layer 11 and the heat-resistant resin layer 12 can be improved. In particular, when the anticorrosion layer 11 contains titanium dioxide and the heat-resistant resin layer 12 contains a fluorine-based resin, the adhesive strength between the anticorrosion layer 11 and the heat-resistant resin layer 12 increases.

The thickness of the anticorrosion layer 11 is not particularly limited, but the average thickness is preferably 10 μm or more and 60 μm or less. By setting the thickness of the anticorrosion layer 11 to 10 μm or more and 60 μm or less, a cooked plate having particularly high durability and rust prevention can be obtained.

The heat-resistant resin layer 12 is a layer for preventing food from burning. For the heat-resistant resin layer 12, a resin containing a fluorine-based resin or a silicon-based resin can be used.
For example, the heat-resistant resin layer 12 includes PTFE (polytetrafluoroethylene), a mixture of polytetrafluoroethylene and an inorganic compound (for example, polyflon TFE enamel manufactured by Daikin Industries, Ltd.), FEP (tetrafluoroethylene-hexa Fluoropropylene copolymer), ETFE (tetrafluoroethylene-ethylene copolymer), PVDF (polyvinylidene fluoride),
PVF (polyvinyl fluoride), PCTFE (polychlorotrifluoroethylene), PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer)
Etc. can be used.

The heat-resistant resin layer 12 may be composed of a plurality of layers. FIG. 2 shows a cross-sectional view of an example of the heating cooking plate when the heat-resistant resin layer 12 is composed of two layers. Referring to FIG. 2, heat-resistant resin layer 12 in this case includes resin layer 12a and resin layer 12b laminated from anticorrosion layer 11 side.
And The resin layer 12b is formed to prevent the food from burning, and the resin layer 12a is formed of the resin layer 12b and the anticorrosion layer 1.
It is formed in order to improve the adhesiveness with No. 1. Resin layer 1
The resins described above can be used for 2a and 12b. In particular, for the resin layer 12a, for example, a resin such as polyflon TFE enamel can be used. For the resin layer 12b, for example, a resin such as PFA can be used.

Further, in the cooking plate of the present invention, the resin layer 12 may further include a resin layer made of polyflon TFE clear resin (manufactured by Daikin Industries, Ltd.) on the resin layer 12b.

Next, a method of manufacturing the above-mentioned cooking plate will be described.

First, an anticorrosion layer 11 is formed on a metal plate 10. The anticorrosion layer 11 can be formed by, for example, a thermal spraying method or a coating method.

As the thermal spraying method, for example, at least one thermal spraying method selected from an arc thermal spraying method, a gas thermal spraying method and a plasma thermal spraying method can be used. Among them, the plasma spraying method is particularly preferable because the surface of the metal plate 10 can be uniformly coated.

As the coating method, for example, a spray method,
A general coating method such as a roll coater method or a dipping method can be used.

The anticorrosion layer 11 is preferably formed by a thermal spraying method. By using the thermal spraying method, the metal plate 1
0 and the anticorrosion layer 11 can be firmly bonded. In addition, by using the thermal spraying method, an uneven shape can be formed on the surface of the anticorrosion layer 11, and the bond between the anticorrosion layer 11 and the heat-resistant resin layer 12 can be strengthened. It is possible to obtain a cooked plate which is hard to make and the food is particularly hard to scorch. Further, by using the thermal spraying method, the anticorrosion layer 11 made of various materials can be easily formed.

After that, the heat-resistant resin layer 12 is formed. The heat-resistant resin layer 12 can be formed using, for example, at least one coating method selected from a spray method, a roll coater method, and a dipping method. After applying the resin, it is preferable to obtain a strong painted surface by performing heating drying and heating baking according to a usual method, and further cooling.

In the case of manufacturing the heating cooker shown in FIG. 2, after forming the resin layer 12a, the resin layer 12b is formed.
May be formed.

The cooking plate of the above embodiment is a metal plate 10
An anticorrosion layer 11 is provided between the heat-resistant resin layer 12 and the heat-resistant resin layer 12. Therefore, according to the above-mentioned cooking plate, a cooking plate having high durability and corrosion resistance can be obtained. As described above, according to the present invention, a cooking plate particularly useful for a baking mold, a frying pan, a hot plate, a rice cooker, and the like can be obtained.

In the above embodiment, the case where the metal plate 10 has a flat plate shape is shown.
Is not limited to a flat shape. For example, metal plate 1
0 may have an uneven shape according to the food to be heated, or may have a pot shape.

The anticorrosion layer 11 is not limited to one layer, but may be composed of a plurality of layers depending on the application.

In the above embodiment, the case where the anticorrosion layer 11 and the heat-resistant resin layer 12 are formed only on one side of the metal plate 10 has been described.
May be formed on both sides of the metal plate 10. Anticorrosion layer 1
By forming 1 on both surfaces of the metal plate 10, a highly heat-resistant cooking plate having particularly high durability and rust resistance can be obtained.

[0035]

The present invention will be described in more detail with reference to the following examples.

In the present embodiment, a baking mold was formed by changing the type of the metal plate 10 and the material of the anticorrosion layer 11 (that is, the material of the thermal spray material), and various characteristics were examined. In addition, anticorrosion layer 1
1 was formed by a plasma spraying method. Heat resistant resin layer 1
As for No. 2, what consisted of two resin layers was used. Specifically, polyflon TFE enamel (manufactured by Daikin Industries, Ltd.) is used for the resin layer 12a, and P
FA was used. The thickness of the anticorrosion layer 11 was 20 μm, and the thickness of the heat-resistant resin layer 12 was 30 μm.

Table 1 shows the results of examining the adhesion to the heat-resistant resin layer, corrosion resistance (rust prevention), and abrasion resistance of Samples 1 to 6. Table 1 shows the anticorrosion layer 1 as a comparative example.
The results of a study on a conventional cooking plate without 1 are also shown. In the table, ○ indicates good, Δ indicates slightly defective, and × indicates defective.

[0038]

[Table 1]

As is clear from Table 1, the cooking plate of the present invention exhibited excellent durability (including abrasion resistance) and corrosion resistance (rust prevention) as compared with the conventional cooking plate. .

Further, the heat cooking plate of the present embodiment formed the anticorrosion layer 11 by thermal spraying, so that it had high adhesion to the heat-resistant resin layer and was excellent in abrasion resistance to the cleaning brush.

As described above, the embodiments of the present invention have been described by way of examples. However, the present invention is not limited to the above embodiments, and can be applied to other embodiments based on the technical idea of the present invention.

[0042]

As described above, since the heat cooking plate of the present invention has the anticorrosion layer formed between the metal plate and the heat-resistant resin layer, the metal plate can be prevented from being corroded. Therefore, according to the cooking plate of the present invention, a cooking plate having high durability and rust prevention can be obtained. In addition, the cooking plate of the present invention exhibits higher durability and rust prevention compared to a conventional cooking plate even when the heat-resistant resin layer is used after repainting.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a cooking plate of the present invention.

FIG. 2 is a view showing another example of the cooking plate of the present invention.

[Explanation of symbols]

 Reference Signs List 10 metal plate 11 anticorrosion layer 12 heat-resistant resin layer 12a, 12b resin layer

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kenjiro Demori 6-2 Imakokufu-cho, Yamatokoriyama-shi, Nara Prefecture F-term in Toho Chemical Co., Ltd. 4B055 AA01 BA14 BA69 CA01 CB16 FA04 FB03 FB15 FB23 FB36 FC09 FC12 FD03 FE01

Claims (6)

[Claims] 1. A cooking plate used for cooking, comprising: a metal plate; an anticorrosion layer formed on the metal plate; and a heat-resistant resin layer formed on the anticorrosion layer. Cook plate. 2. The heating plate according to claim 1, wherein the anticorrosion layer is made of a ceramic or an alloy. 3. The cooking plate according to claim 1, wherein the anticorrosion layer contains at least one selected from titanium dioxide, a nickel-aluminum alloy, and a nickel-aluminum-chromium alloy. 4. The cooking plate according to claim 1, wherein the heat-resistant resin layer contains at least one resin selected from a fluorine-based resin and a silicon-based resin. 5. The cooking plate according to claim 1, wherein the anticorrosion layer is an anticorrosion layer formed by a thermal spraying method. 6. The cooking plate according to claim 5, wherein the average thickness of the anticorrosion layer is 10 μm or more and 60 μm or less.