JP2018091602A - Top plate cover for gas range - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a top plate cover for a gas range in which possibility of producing discoloration on the top plate is reduced under a condition of remaining alkaline detergent and high temperature when it is used on an enameled top plate.SOLUTION: A top plate cover 1 is constituted by a paper 4; a first aluminum foil 5 laminated on the upper surface of the paper 4 through a first adhesive agent layer 6; a second aluminum foil 7 laminated at the lower surface of the paper 4 through a second adhesive agent layer 8; and a protective coat layer 10 laminated at the lower surface of the second aluminum foil 7. With such an arrangement as above, the lower surface of the second aluminum foil and the upper surface of the top plate are not directly contacted, but the protective coat layer made of synthetic resin having a high temperature alkaline durability is contacted with the top plate, so that a possibility that the alkaline detergent is left and discoloration occurs on the top plate under a condition of high temperature when it is utilized on the enameled top plate is reduced.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a gas range top plate cover, and more particularly to a gas range top plate cover that is installed so as to cover an upper surface of a gas range top plate.

  Conventionally, there is a top plate cover that is installed and used on the top plate of a gas range.

  FIG. 4 is a plan view showing the overall shape of the conventional top plate cover disclosed in Patent Document 1, and FIG. 5 is an enlarged cross-sectional view taken along the line V-V shown in FIG.

  With reference to these drawings, the seat body 52 constituting the top plate cover 51 has a rectangular sheet shape, and has a plurality of openings 61a corresponding to the outer diameter (position and size) of a gas burner in a gas range described later. To 61c are formed.

  The sheet body 52 is configured by laminating aluminum foils 55a and 55b on both sides of the flame retardant paper 54 via adhesive layers 56a and 56b.

  Next, FIG. 6 is a perspective view showing a use state of the top plate cover shown in FIG.

Referring to the figure, the bottom surface portion 53 of the top plate cover 51 is set to a size that fits into a concave top plate 72 formed on the upper surface of the equipment base of the gas range 71.
The top plate 72 is made of various materials, for example, those made of enamel. Each of the plurality of openings 61 a to 61 c of the top plate cover 51 is set so as to correspond to the outer diameter of each of the plurality of gas burners 73 a to 73 c in the gas range 71.

  By being configured in this way, the top plate cover 51 is installed so as to substantially cover the entire upper surface of the device base of the gas range 71. When cooking is performed using the gas range 71 with the top plate cover 51 installed, the top plate shows that dirt such as cooking residue containing moisture and oil scattered with cooking reaches the upper surface of the gas range 71. The cover 51 prevents the top plate 72 of the gas range 71 from being soiled.

JP 2000-205581 A

  When the conventional top plate cover 51 is in use, the lower surface of the aluminum foil 55b stacked on the lowermost side of the sheet body 52 and the upper surface of the top plate 72 are in direct contact with each other. Therefore, when cooking is performed in the gas range 71, especially when cooking for a relatively long time, such as deep-fried food, the contact location between the top plate 72 and the top plate cover 51 around the gas burner 73 is 200 degrees ( Celsius, hereinafter the same shall apply for temperature).

  Further, the top plate cover 51 may be removed and the upper surface of the top plate 72 of the gas range 71 may be cleaned using an alkaline detergent. After the cleaning, the top plate cover 51 is set again on the top plate 72. At that time, an alkaline detergent may remain at the contact point between the top plate 72 and the top plate cover 51.

  Then, the conventional top plate cover is installed so as to be in direct contact with the top plate made of enamel, the alkaline detergent remains at the contact location, and the gas burner 73 is used so that the top around the gas burner 73 is used. When the contact portion between the plate 72 and the top plate cover 51 becomes high temperature (particularly when the temperature reaches 200 ° C. or higher), a dark spot-like discoloration may occur on the upper surface of the top plate.

  In addition, the direct contact mentioned above does not require two surfaces to closely adhere to each other, and the lower surface of the top plate cover in a state where the top plate cover is installed on the top plate by a normal installation method. And a contact state between the top plate and the upper surface of the top plate. At this time, it also includes contacting through a small amount of liquid.

  Moreover, the above-mentioned problem is remarkable when the alkaline detergent is strongly alkaline having a pH of 11 or higher.

  Such problems are that the aluminum metallic material surface and the enamel material surface are in direct contact, that the alkaline detergent remains at the contact location, and that the contact location has reached a high temperature, The reaction occurs and occurs under the above conditions. That is, for example, when a conventional top plate cover is used for a top plate made of a material other than enamel, such a problem does not occur, and when an alkaline detergent remains at the contact point on the enamel top plate However, there are few opportunities to reach a high temperature (200 degrees) under normal usage, and the problem is unlikely to occur because the temperature is maintained for a short time, and even if it occurs, discoloration after reaching a high temperature of about 70 degrees. It took 3 months (2000 hours) or more to occur. For this reason, the frequency of problems is not high and has not been discovered so far, but when it occurs, the discoloration on the top plate cannot be easily removed even if various detergents are used. Therefore, there is a high need for improvement.

  The present invention has been made to solve the above-described problems. When used on an enameled top plate, the alkaline detergent remains and discoloration may occur on the top plate under high temperature conditions. An object of the present invention is to provide a top plate cover for a gas range in which is reduced.

  In order to achieve the above object, the invention according to claim 1 is a gas range top plate cover installed so as to cover the upper surface of the enamel top plate of the gas range, and is a sheet-like paper, A first aluminum foil laminated on the upper surface of the paper, a second aluminum foil laminated on the lower surface of the paper, and a synthetic resin having high temperature alkali resistance laminated on the lower surface of the second aluminum foil And a protective coating layer made of

  If comprised in this way, the lower surface of the 2nd aluminum foil and the upper surface of a top plate do not contact directly at the time of use, but the protective coating layer which consists of a synthetic resin which has high temperature alkali tolerance contacts a top plate To do.

  According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, the synthetic resin is an epoxy-amino resin.

  If comprised in this way, a protective-coat layer has high temperature strong alkali tolerance. Further, the water repellency of the surface is improved. Further, the slip resistance is improved.

  The invention according to claim 3 is the structure of the invention according to claim 1 or claim 2, wherein the surface of the protective coating layer is protected after performing a rubbing test in which methyl ethyl ketone impregnated waste is reciprocated 10 times between 15 cm at a load of 900 g. The coating layer does not peel off.

  If comprised in this way, it will become a protective coat layer with the adhesiveness with respect to the 2nd aluminum foil stabilized.

  According to a fourth aspect of the present invention, in the configuration of the first aspect of the present invention, an opening corresponding to the outer diameter of the gas burner in the gas range and a periphery of the opening are formed of different types. And an opening auxiliary line for forming another opening corresponding to the gas burner of the gas range, and the surface of the protective coating layer has anti-slip properties.

  If comprised in this way, another opening can be formed using an opening auxiliary | assistant line. Further, the slip resistance of the lower surface of the top plate cover is improved.

  The invention according to claim 5 is a gas range top plate cover installed so as to cover the upper surface of the enamel top plate of the gas range, the lower surface of the sheet main body made of an aluminum metallic material, and the sheet And a protective coating layer made of a synthetic resin having high-temperature alkali resistance, which is laminated on the lower surface of the main body.

  If comprised in this way, the lower surface of an aluminum metallic material and the upper surface of a top plate do not contact directly at the time of use, but the protective coating layer which consists of a synthetic resin which has high temperature alkali tolerance contacts a top plate. .

  As described above, the invention described in claim 1 is made of a synthetic resin having a high-temperature alkali resistance because the lower surface of the second aluminum foil and the upper surface of the top plate are not in direct contact during use. Since the protective coating layer is in contact with the top plate, when used on the enamel top plate, the possibility of discoloration on the top plate under the condition of residual alkaline detergent and high temperature is reduced.

  In the invention according to claim 2, in addition to the effect of the invention according to claim 1, since the protective coat layer has high-temperature strong alkali resistance, discoloration may occur on the top plate when a strong alkaline detergent is used. Will decrease more reliably. Further, since the water repellency of the surface is improved, the labor of cleaning is reduced. Furthermore, since the slip resistance is improved, the stability of installation is improved.

  According to the third aspect of the invention, in addition to the effects of the first or second aspect of the invention, the protective coating layer has a stable adhesion to the second aluminum foil, and therefore discoloration occurs on the top plate. The fear is further reduced.

  In the invention according to claim 4, in addition to the effects of the invention according to any one of claims 1 to 3, another opening can be formed using the opening auxiliary line. It can be installed in the range, improving usability. Moreover, since the slip prevention property of the lower surface of the top plate cover is improved, it is possible to prevent a deviation when forming another opening along the opening auxiliary line, and the usability is improved.

  According to the fifth aspect of the present invention, in use, the lower surface of the aluminum metallic material and the upper surface of the top plate are not in direct contact with each other, and a protective coating layer made of a synthetic resin having high-temperature alkali resistance is formed on the top plate. Because of the contact, when used on the enamel top plate, the possibility of discoloration on the top plate under the condition of residual alkaline detergent and high temperature is reduced.

It is a top view which shows the whole top plate cover shape by embodiment of this invention. It is an expanded sectional view of the II-II line shown in FIG. It is a perspective view which shows the use condition of the top plate cover shown in FIG. It is the top view which showed the whole shape of the conventional top plate cover. It is an expanded sectional view of the VV line shown in FIG. It is a perspective view which shows the use condition of the top plate cover shown in FIG.

  FIG. 1 is a plan view showing the overall shape of a top plate cover according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view taken along line II-II shown in FIG. 1, and FIG. 3 is shown in FIG. It is a perspective view which shows the use condition of a top plate cover.

  With reference to these drawings, the sheet body 2 of the top plate cover 1 has a substantially rectangular sheet shape of, for example, 40 cm in length and 60 cm in width, and has an outer diameter of each of the gas burners 23 a to 23 c in the gas range 21. A plurality of corresponding openings 11a to 11c are formed. As shown in FIG. 3, the top plate cover 1 is installed so as to cover the upper surface of the top plate 22 of the gas range 21. As with the conventional top plate cover, when cooking is performed using the gas range 21 with the top plate cover 1 installed, dirt such as cooking scum containing water and oil scattered with cooking is stored in the gas range 21. The top plate cover 1 prevents the top plate 22 from reaching the upper surface and prevents the top plate 22 of the gas range 21 from being soiled. And when cooking fried food etc., the contact location of the top plate 22 around the gas burner 23 and the top plate cover 1 may reach a high temperature of 200 degrees or more.

  Note that “upper” or “lower” means that, in the installed state of the top plate cover 1, the direction in which the top plate cover 1 exists with respect to the top plate 22 is the upper side, and the opposite direction is the lower side.

  As shown in FIG. 2, the sheet body 2 constituting the top plate cover 1 includes a paper 4 and a first aluminum foil 5 laminated on the entire upper surface of the paper 4 via a first adhesive layer 6. A second aluminum foil 7 laminated on the entire lower surface of the paper 4 via the second adhesive layer 8, and a protective coat layer 10 laminated on the entire lower surface of the second aluminum foil 7. It consists of and. In FIG. 2, the first adhesive layer 6 and the second adhesive layer 8 are clearly formed as separate layers on the front and back surfaces of the paper 4, but the first adhesive layer 6 and the second adhesive layer 8 The adhesive layer 8 may be penetrated into the paper 4 and integrated.

Here, the paper 4 according to the present embodiment is a sheet-like portion that is the basis of the shape of the top plate cover, and has a basis weight (sheet body) from the viewpoint of achieving both shape retention and easy folding. The average basis weight is preferably 70 g / m ² or more and 300 g / m ² or less.

  The paper 4 described above can be a known paper, but is preferably a flame retardant paper from the viewpoint of ensuring safety when installed around the gas burner, and is a non-flammable paper. More preferably it is. The type of paper is not particularly limited, and pure white roll paper, kraft paper, parchment paper, ivory paper, Manila paper, card paper, cup paper, glassine paper, and the like can be used depending on the desired application.

  Next, the first aluminum foil 5 according to the present embodiment is made of an aluminum metallic material (including an aluminum alloy), has moisture resistance, gas barrier properties, heat resistance, shape retention, and the like, and has metallic gloss. To improve aesthetics. From the viewpoint of ensuring durability and form retention and ensuring ease of breakage, which will be described later, the thickness (average thickness in the sheet body) is preferably 6 μm or more and 50 μm or less.

  The first aluminum foil 5 described above may or may not be subjected to stabilization treatment such as annealing.

  Further, in the present embodiment, the upper surface of the first aluminum foil 5 is printed with the heat-resistant ink to improve the design and the ease of wiping off dirt, but printing is not always necessary. Absent.

  Next, the second aluminum foil 7 according to the present embodiment is made of an aluminum metallic material (including an aluminum alloy), like the first aluminum foil 5 described above, and is moisture-proof, gas-barrier, and heat-resistant. , Have shape retention and the like. From the viewpoint of ensuring durability and form retention and ensuring ease of processing, the thickness is preferably 6 μm or more and 50 μm or less.

  In the present embodiment, the first aluminum foil 5 is laminated on the upper surface of the paper 4 by a general laminating process through a first adhesive layer 6 having a thickness of about 15 μm. However, other bonding means may be used, and aluminum may be laminated by vapor deposition or the like without using an adhesive layer. Also, the means for laminating the second aluminum foil 7 on the paper 4 using the second adhesive layer 8 is the same as in the case of the first adhesive layer 6 and the first aluminum foil 5, so the description is repeated. Absent.

  In this way, both surfaces of the paper 4 of the sheet body 2 are covered with the first aluminum foil 5 and the second aluminum foil 7 having form retainability. Therefore, moisture absorption of the paper 4 is suppressed and the shape retention of the sheet body 2 is improved. As a result, warpage due to heat and moisture from the gas range can be suppressed, so that the top plate can be fitted.

  Next, the protective coating layer 10 according to the present embodiment is made of a synthetic resin having high-temperature alkali resistance, and the alkaline detergent that has reached a high temperature at the contact location when the top plate cover 1 is used reaches the second aluminum foil 7. To stop doing.

  Here, the high-temperature alkali resistance refers to a performance in which physical properties do not significantly decrease even when in contact with an alkali having a pH of 8 or higher in a high-temperature environment of about 70 ° C., and particularly in a high-temperature environment of 200 ° C. or higher Preferably it is performance. Specifically, the presence or absence of high-temperature alkali resistance can be determined by whether or not discoloration occurs on the enamel top plate when the top plate cover is used in accordance with the high-temperature alkaline environment test of the examples described later. is there. In addition, even if it has both the tolerance (heat resistance) with respect to high temperature and the tolerance with respect to an alkali, it does not necessarily have a high temperature alkali tolerance.

  In the top plate cover according to the present embodiment, the protective coat layer is laminated on the lowermost part of the sheet body, so that the lower surface of the second aluminum foil and the upper surface of the top plate are in use at the time of use. Since the protective coating layer made of a synthetic resin having high-temperature alkali resistance is not in direct contact with the top plate, when used on the enamel top plate, under the condition of residual alkaline detergent and high temperature, The risk of discoloration on the top plate is reduced.

  In conventional top plate covers, it is necessary to provide a protective coating layer on the surface of the aluminum foil laminated at the lowest position because of the high design of the silver surface of the aluminum foil. Possible), since the back surface is in contact with the top plate, the need for a protective coating layer is low, and it is not common because of cost. In the present invention, the protective coating layer made of a synthetic resin having high temperature alkali resistance is intentionally laminated on the lower surface of the second aluminum foil, thereby reducing the possibility of occurrence of discoloration on the top plate. .

  Moreover, as a synthetic resin which has a high temperature alkali tolerance of 200 degree | times or more, an epoxy-amino resin, an epoxy, a polyimide, a polyethylene terephthalate, a polyamideimide etc. are mentioned, for example. Moreover, it is preferable that it is an epoxy-amino resin. Since the protective coating layer made of an epoxy-amino resin has high-temperature strong alkali resistance, the risk of discoloration on the top plate is more reliably reduced when a strong alkaline detergent is used. Further, since the water repellency of the surface is improved, the labor for cleaning is reduced and the risk of remaining alkaline detergent at the contact point is reduced. Furthermore, since the slip resistance is improved, the stability of installation is improved.

  Here, the high-temperature strong alkali resistance is basically the same as the above-described high-temperature alkali resistance except that it refers to the performance with respect to a strong alkali having a pH of 11 or higher, and therefore the description thereof will not be repeated. Even in general household detergents, for example, there are detergents having a pH of 12 to 13 containing strong alkaline electrolyzed water as a main component, and therefore it is important to have high-temperature strong alkali resistance.

  The thickness of the protective coating layer 10 described above is preferably 0.5 μm or more and 10 μm or less. This is because if it is too thin, the high temperature alkali resistance cannot be sufficiently exhibited, and if it is too thick, the top plate cover described later cannot be easily broken.

  As the means for laminating the protective coating layer 10 described above, a known means for laminating a synthetic resin can be used. For example, a synthetic resin dissolved or dispersed in a solvent suitable for this can be used. Examples thereof include printing such as gravure printing, coating, film lamination, and the like.

  Further, the above-mentioned adhesiveness of the protective coating layer 10 to the second aluminum foil 7 is a rubbing in which methyl ethyl ketone as a solvent is soaked in a waste cloth and wound around a weight of 900 g, and the surface of the protective coating layer 10 is reciprocated 10 times between 15 cm. It is preferable that the protective coating layer 10 does not peel off after the test. Here, the peeling includes that the surface of the protective coat layer is gradually peeled off or scraped off in the reciprocating process of the rubbing test. Moreover, the thing which peeling does not generate | occur | produce means what the exposure of a 2nd aluminum foil does not generate | occur | produce after a rubbing test. That is, by sufficiently hardening the protective coating layer 10, the protective coating layer 10 has a stable adherence to the second aluminum foil 7, so that the possibility of discoloration on the top plate is further reduced. As a means for laminating such a protective coat layer 10, for example, in the above-described gravure printing drying step, the drying temperature is 50 to 250 degrees (preferably 160 to 200 degrees), and the humidity is 10% to 80. % Or less (preferably 30% or more and 60% or less), a line speed of 10 m / min or more and 200 m / min (preferably 50 m / min or more and 120 m / min or less), and a drying time of 30 seconds or more and 1 hour or less (preferably Is 5 minutes or more and 12 minutes or less), but is not limited thereto, and it is sufficient that the protective coating layer can be sufficiently cured.

  Next, the auxiliary opening line provided in the top plate cover will be described.

  Referring to FIG. 1, the top plate cover 1 has openings 11 a to 11 c corresponding to the outer diameter of the gas burner of a specific type gas range as described above. In addition, a slit 12a as an opening auxiliary line is formed around the opening 11a at a position and size corresponding to the outer diameter of a gas burner of a different type of gas range. A slit 13a as an opening auxiliary line is formed at a position and size corresponding to the outer diameter of the gas range. Further, similarly, a cut 12b and a cut 13b, and a cut 12c and a cut 13c are formed around the opening 11b and the opening 11c.

  Here, the cut is formed continuously from the lower surface of the sheet body to the protective coating layer, the second aluminum foil, and a part of the paper. In production, for example, a Thomson blade is used for the sheet body 2 to form a continuous cut from the lower surface to at least a part of the protective coating layer 10, the second aluminum foil 7 and the paper 4. it can.

  Thereby, for example, in the case of a model in which the outer diameter of the ring plate of the gas burner corresponding to the opening 11a corresponds to the cut 12a, the user breaks the sheet body 2 with reference to the cut 12a using a plastic knife or the like. Since another larger opening can be formed in the seat body 2 instead of the opening 11a, it can be installed corresponding to different types of gas ranges, and the usability is improved. The cuts 12b, 12c and 13a to 13c are the same as the cut 12a.

  In the present embodiment, as shown in FIG. 3, the opening 11a matches the outer diameter of the ring plate 24a of the gas burner 23a, and the opening 11b becomes the outer diameter of the ring plate 24b of the gas burner 23b. The opening 11c matches the outer diameter of the ring plate 24c of the gas burner 23c. Therefore, it is not necessary to newly form another opening using the cut line. However, in the case of installing for a gas range of a type different from the present embodiment, the outer diameter of each gas burner of the gas range. In accordance with the above, it may be used in a state in which another opening is formed by using the cut line.

  When the other opening is formed by the cut, the user breaks from above in the installed state as described above. However, the surface in contact with the top plate as in the conventional top plate cover is an aluminum foil. If this is the case, a slippage may occur when fractured due to low slip resistance.

  Therefore, the surface of the protective coating layer according to the present embodiment should have anti-slip properties by using a synthetic resin having anti-slip properties such as epoxy-amino resin or by applying anti-slip treatment. preferable. In the top plate cover provided with the opening auxiliary line, the surface of the protective coating layer should have anti-slip properties in this way, so that the shift at the time of breaking to form another opening along the opening auxiliary line is prevented. It can be prevented, and further has a synergistic effect that improves usability.

  In the present embodiment, the top plate cover has a specific overall shape as shown in FIG. 1. However, even if the top plate cover has the same overall shape as the conventional top plate cover as shown in FIG. good. The top plate cover does not completely cover the entire top plate of the gas range, but a top plate cover for covering only the top plate around the gas burner in the gas range. It may be a top plate cover in which an opening corresponding to the size of one gas burner is formed.

  In this embodiment, the protective coating layer is laminated on the lower surface of the second aluminum foil, but the upper surface of the first aluminum foil is made of the second synthetic resin having high-temperature alkali resistance. A second protective coat layer may be further laminated. In addition, since the upper surface of the first aluminum foil does not directly contact the top plate cover, the second synthetic resin may be different from the above-described synthetic resin according to the present embodiment. There may be. Therefore, the configuration of the second protective coat layer may be different from or similar to the configuration of the protective coat layer described above according to the present embodiment. However, when the top plate cover is turned upside down and used, it is desirable that both the top plate cover front and back have high-temperature alkali resistance, so the configuration of the second protective coat layer is related to the present embodiment. It is preferable that it is the same as that of the structure of the protective coat layer mentioned above. In that case, an epoxy-amino resin is also suitable as the second synthetic resin. With this configuration, even when the top plate cover is turned upside down, the possibility of discoloration on the top plate is reduced.

  Further, in the present embodiment, the sheet body has a specific laminated structure, but the lower surface thereof has a high-temperature alkali resistance laminated on the sheet body made of an aluminum metallic material and the lower surface of the sheet body. If it is a top plate cover provided with the protective coating layer which consists of synthetic resins, this invention can be applied similarly. That is, since the lower surface of the aluminum metallic material and the upper surface of the top plate are not in direct contact with each other during use, the protective coating layer made of a synthetic resin having high-temperature alkali resistance contacts the top plate. When used on the top plate, there is a reduced risk of discoloration on the top plate under conditions of residual alkaline detergent and high temperatures. For example, the top plate cover which laminated | stacked the protective coating layer on the lower surface of the aluminum foil molded object which has a shape and thickness which show | plays a function equivalent to the top plate cover which concerns on this Embodiment is mentioned.

  Furthermore, in the present embodiment, there are three openings formed in the seat body, but the openings are formed according to the number of gas burners in the gas range to be used. It may be a number. Further, the openings may not be formed, and all may be formed by opening auxiliary lines.

  Further, in the present embodiment, the cut line is formed as the opening auxiliary line, but other means may be used as long as it is a reference for the formation position of other openings. For example, perforated ruled lines can be used.

  Furthermore, in the present embodiment, the top plate cover is provided with the opening auxiliary line, but the opening auxiliary line may not be provided.

  Further, in the present embodiment, the first aluminum foil is on the upper surface of the paper, the second aluminum foil is on the lower surface of the paper, and the protective coating layer is on the lower surface of the second aluminum foil. Each of them is laminated on the entire surface, but it is not necessary that each of them is the entire surface. For example, the protective coat layer may be laminated only around the opening that can reach a high temperature during use. In addition, it is preferable that they are laminated on the entire surface from the viewpoint of improving the fit of the installation of the top plate covering to the top plate and ease of manufacturing.

  Furthermore, in the present embodiment, the protective coat layer is directly laminated on the lower surface of the second aluminum foil. However, an adhesive layer or the like is interposed between the protective coat layer and the second aluminum foil. Layers may be stacked. That is, the protective coat layer is laminated on the lower surface of the second aluminum foil, and the protective coat layer may be in contact with the top plate at the installation location during use.

  Further, in the present invention, the product made by enamel means an essentially magnetized or glassy inorganic coating joined to a metal such as iron or aluminum by melting at a temperature of 425 ° C. or higher, or such an inorganic coating. Refers to the product on the top plate (the surface on which the top plate cover is installed). Such products include not only enamel steel plates but also multilayer structures in which a color layer, mica layer, clear layer, glass fiber, glass coat, etc. are applied to a part or all of the upper surface.

  Hereinafter, the present invention will be specifically described based on examples. The present embodiment is not limited to the examples.

I. Configuration of Top Plate Cover Used for Testing As shown in FIG. 2, a first aluminum foil (thickness: 12 μm) and a second aluminum foil (thickness: 6. μm) are formed on both sides of paper (basis weight 100 g / m ² ). 5 μm) each prepared a sheet body laminated via a first adhesive layer and a second adhesive layer, and a protective coat layer (each described below) on the lower surface of the second aluminum foil ( Sheet bodies of Example 1, Example 2 and Comparative Example 1 having a thickness of 1 μm) were prepared.
Example 1 and Example 2: Epoxy-amino resin Comparative Example 1: Vinyl chloride vinyl acetate copolymer (vinyl acetate) -based resin In the production of Example 1 and Example 2, an epoxy-amino resin and an organic solvent ( A coating agent containing at least 65 wt% to 75 wt% in a total coating amount of 100 wt% is laminated by gravure printing on the lower surface of the second aluminum foil at a coating amount of 1 g / m ² of solid content, and is described above. Curing was performed under dry conditions.

  At this time, peeling of the protective coat layer does not occur after performing a rubbing test in which the methyl ethyl ketone impregnated waste is reciprocated 10 times between 15 cm with a load of 900 g on the surface of the protective coat layer of Example 1 and Example 2 (second The aluminum foil was not exposed).

  In the production of Comparative Example 1, a coating agent containing at least a vinyl chloride resin and an organic solvent was used. The laminating method is the same as in Example 1 and Example 2.

  Using the above two types of top plate covers, a high temperature alkaline environment test was conducted to confirm the occurrence of discoloration on the enamel top plate in a high temperature alkaline environment.

II. High temperature alkaline environment test As a test body, a test body cut out in a rectangular sheet shape of 5 cm in length and 5 cm in width from the sheet main body covered with each top plate prepared in I above was prepared.

  As a gas range of Example 1 and Comparative Example 1, a gas stove of “RS31W13K10R-VL” manufactured by Rinnai Corporation was prepared. The structure of the top plate is such that a color enamel is laminated on an enamel steel plate, and a clear layer and a mica layer are further laminated thereon. In addition, as a gas range of Example 2, a gas stove of “RS31W13H2R-BL” manufactured by Rinnai Corporation was prepared. The top plate is made of a steel plate for enamel. In addition, all are the structures similar to the gas range shown in FIG.

  As an alkaline detergent, a “water dripping you” made by Lek Co., Ltd. was prepared.

  First, drop 2 drops (about 1 mL) of alkaline detergent with a dropper on the top plate around the gas burner of the gas range indoors so that the test specimen does not overlap each other with the protective coating layer as the installation surface. Installed. This operation was performed in three tests of Example 1, Example 2, and Comparative Example 1, respectively.

  Next, a commercially available 26 cm diameter frying pan in which about 80% of water was put was placed on the gas burner of the gas range, and the gas burner was ignited for 1 hour while maximizing the thermal power. Note that the temperature around the gas burner in the gas range reached 250 degrees when about 40 minutes had elapsed, and the temperature was maintained until 1 hour had elapsed.

  After 1 hour, the gas burner was digested and left in a room of normal temperature and humidity. Two specimens were removed every month, and it was visually confirmed whether or not discoloration occurred on the top plate, and the test was carried out for a total of 3 months.

  The results are shown in Table 1 below.

表中、「○」は試験体２枚の設置箇所のいずれにも変色が発生していなかったこと、「×」は試験体２枚の設置箇所の少なくとも１箇所に変色が発生したこと、「−」はそれ以前に変色が発生していたためデータが無いことを示す。

In the table, “◯” indicates that no discoloration occurred in any of the two test specimens, “×” indicates that discoloration occurred in at least one of the two specimens, “-” Indicates that there was no data because discoloration had occurred before that.

  In Example 1 and Example 2, it was confirmed that no discoloration occurred on the top plate even after 3 months had passed, and good results were obtained.

  In Comparative Example 1, discoloration occurred on the top plate in the first month. This is probably because the vinyl chloride-based resin peeled (dissolved) in a high-temperature alkaline environment, and there was a portion where the enamel top plate and the aluminum metal material covering the top plate were in direct contact.

DESCRIPTION OF SYMBOLS 1 ... Top plate cover 4 ... Paper 5 ... 1st aluminum foil 7 ... 2nd aluminum foil 10 ... Protective coating layer 11 ... Opening 12, 13 ... Cut (opening auxiliary line)
21 ... Gas range 22 ... Top plate 23 ... Gas burner In addition, the same code | symbol in each figure shows the same or an equivalent part.

Claims (5)

A top plate cover for a gas range installed so as to cover the upper surface of the enamel top plate of the gas range,
A sheet of paper,
A first aluminum foil laminated on the upper surface of the paper;
A second aluminum foil laminated on the lower surface of the paper;
A gas range top plate cover comprising: a protective coating layer made of a synthetic resin having high-temperature alkali resistance, laminated on the lower surface of the second aluminum foil.   The top plate cover for a gas range according to claim 1, wherein the synthetic resin is an epoxy-amino resin.   3. The gas range according to claim 1, wherein peeling of the protective coating layer does not occur after performing a rubbing test in which methyl ethyl ketone impregnated waste is reciprocated 10 times between 15 cm at a load of 900 g on the surface of the protective coating layer. Top plate cover. An opening corresponding to the outer diameter of the gas burner in the gas range;
An auxiliary opening for forming another opening formed around the opening and corresponding to a gas burner of a different type of gas range;
The top plate cover for a gas range according to any one of claims 1 to 3, wherein the surface of the protective coating layer has anti-slip properties. A top plate cover for a gas range installed so as to cover the upper surface of the enamel top plate of the gas range,
A sheet body whose lower surface is made of an aluminum metallic material,
A top plate cover for a gas range, comprising a protective coating layer made of a synthetic resin having high-temperature alkali resistance, laminated on the lower surface of the sheet body.

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