JPH0499544A - heating cooker - Google Patents

Abstract

PURPOSE:To substantially prevent the staining of a cooking surface and to allow the cooking of pan-fried meat to a good taste by forming a film of a composite resin which contains a specific ratio of a fluororesin and contains a polyphenylene sulfide resin as the principal component on the cooking surface. CONSTITUTION:The cooking surface 1 is constituted by forming the film 1b of the composite resin constituting of the polyphenylene sulfide resin incorporated with the fluororesin on the surface of a base material 1a consisting of aluminum die casting. An operating part, etc., are integrated to the body 2. This film 1b is formed by coating the surface of the base material 1a with the coating material of the composite resin consisting of the polyphenylene sulfide resin incorporated with 10 to 50wt.% fluororesin by spraying and heat treating the coating for 30 minutes at 380 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cooking device such as a hot plate, grill pan, electric pot, etc., which has a cooking surface formed with a coating that prevents food from sticking.

BACKGROUND OF THE INVENTION Conventionally, the cooking surfaces of cooking devices such as hot plates, grill pans, and electric pots have been coated with a fluororesin film called fluorine coat, which has excellent heat resistance and non-stick properties.

Recently, improvements have been made to improve the coating hardness of such surface treatment materials, improve adhesion to cooking surfaces, and improve painting workability with paints that have excellent adhesion to substrates with just one coat and do not require a base coat. Paints made of composite resins in which 20 to 30% by weight of polyphenylene sulfide resin is added to fluororesin have been developed for the purpose of reducing costs and reducing costs.

Problems to be Solved by the Invention Conventional fluororesin coatings and composite resins made by adding polyphenylene sulfide resin to fluororesin have excellent non-stick properties and pose no practical problems in terms of usability of heating cookers. . However, when a cooker coated with these paints is used to cook food containing a large amount of water and oil, such as grilled meat, the food lacks deliciousness and the taste is not very desirable.

The present invention solves these problems, and has excellent cooking performance when cooking foods containing a large amount of water and oil, such as grilled meat, as well as coating film strength and heat resistance that do not pose any practical problems. The object of the present invention is to provide a heating cooker on which a film is formed.

Means for Solving the Problems In order to clarify the cause of the above-mentioned conventional problems, the inventors of the present invention have developed a heating system using iron plates with no surface treatment at all, and heating surfaces coated with various different surface treatment materials. We investigated the cooking performance and coating performance of cookers.

As a result, it was confirmed that the cooking performance, including taste, was superior to the heating cooker whose cooking surface was coated with a surface treatment material that was excellent in both lipophilicity and hydrophilicity.

However, surface treated materials that exhibit hydrophilic and lipophilic properties,
They are either inorganic material-based materials such as ceramic coating materials, or organic material-based materials such as polyphenylene sulfide resins, which have the problem of significantly inferior properties in terms of non-adhesion.

In order to solve this problem, the present invention forms a coating mainly composed of polyphenylene sulfide resin containing 10 to 50% by weight of fluororesin on the cooking surface of a heating cooker.

Function: The surface treatment material whose main component is polyphenylene sulfide resin containing 10 to 50% by weight of the fluororesin of the present invention can be used to prevent baking of the cooking surface. Because of its floating property, it provides the hydrophilic and lipophilic surface properties of polyphenylene sulfide resin while remaining non-adhesive like conventional fluorine coatings, making it more delicious when cooked than with conventional fluorine coatings. will be possible.

Embodiment FIG. 1 shows a heating cooker (trade name: Hot Plate) which is an embodiment of the present invention.

As shown in the figure, the cooking surface 1 is constructed by applying a composite resin coating 1b made of polyphenylene sulfide resin containing 20% by weight of fluororesin to the surface of a base material 1a made of die-cast aluminum. Further, the main body 2 is integrated with an operation section and the like. Note that this coating 1b
8 materials consisting of composite resins of sample teeth 1 to 8 prepared at various compounding ratios as shown in Table 1 below were added to the base material 1a.
It was formed by spray painting on the surface and then heat-treating it at 380°C for 30 minutes.

Like this! ! The characteristics of the various heating cookers provided were evaluated using the following methods.

(1) Cooking performance The cooking surface was heated to a temperature of 200° C. at the center, and beef (about 5 ms thick, about 15 g in weight) was placed on the center of the cooking surface and cooked for 75 seconds.

After this, the appearance, smell, taste, and five textures were evaluated, and those that were overall excellent were marked with ◎, and those that were good were marked with ○.
Those that were slightly inferior were marked with △, and those that were markedly inferior were marked with >.

(2) Prepare a mixed liquid prepared by mixing oil with good stickiness and sugar at a weight ratio of 1:1 as a test liquid, and heat this test liquid at 200°C.
1 drop (approximately 0.05 g) in the center of the heated cooking surface
After dropping the mixture, the cooking surface was held at 200°C for 15 minutes.

After this, the cooking surface was cooled and the burnt solids were wiped off with a cloth dampened with water. The above operations are counted as one time,
Repeat this operation 50 times at the same position. Those with no stickiness at all were evaluated as ○, and those with significant stickiness that caused practical problems were evaluated as ×.

The above evaluation results are shown in Table 1.

Note that sample NQ9 is a comparative example, and is a conventional heating cooker using a paint made only of fluororesin.

Table 1 As is clear from Table 1, regarding the stickiness performance, samples NIL~l! containing polyphenylene resin as the main component and having a fluororesin content of 5% or less had a good sticking performance. No. 12 heating cooker had a problem in cooking due to the large amount of stickiness. However, sample II with a fluororesin content of 10% or more! For the samples with teeth 113 to 9, no sticking was observed and there were no practical problems. On the other hand, regarding cooking performance, the fluororesin content is 5.
Samples NQI to NQ6 of 0% or less were found to taste good in the cooking device.

However, sample lI with a fluororesin content of 60% or more! 1
It was not delicious with a score of 7 to 9.

From these results, samples M3 to II have a fluororesin content that has excellent cooking performance within a range that causes no practical problems! It became clear that sample Arashi 4 to Sho 5 were preferable. Therefore, the fluororesin content is between 10% and 50%.
A range of % is appropriate, and a range of 20% to 30% is optimal.

In addition, in the examples of the present invention, in addition to polyphenylene sulfide resin and fluororesin, heat-resistant fibers and color pigments may be added to increase surface hardness.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, a composite resin film containing 10% to 50% by weight of fluororesin and mainly composed of polyphenylene sulfide resin is formed on the cooking surface. This will prevent the cooking surface from getting dirty.
＜, and a heating cooker capable of cooking delicious yakiniku is realized.

[Brief explanation of drawings]

The figure is a perspective view of a heating cooker showing an embodiment of the present invention. 1...Cooking surface, 1a...Base material, 1b.
...Coating, 2...Body.

Claims (1)

[Claims] A heating cooker having a cooking surface formed with a coating mainly composed of polyphenylene sulfide resin containing 10% to 50% by weight of fluororesin.