Aluminum sheet for cooking, manufacturing method of aluminum sheet for cooking, and method of using aluminum sheet for cooking

Abstract

To provide an aluminum sheet for cooking which has a simple structure, is improved in strength, is excellent in flexibility, improves user friendliness by arbitrarily adjusting a size to be used, is excellent in durability, is repeatedly usable, is environment-friendly, is practically useful, and is excellent in productivity and economical efficiency.SOLUTION: An aluminum sheet for cooking comprises: an aluminum flat sheet main body 120; a silicone membrane 140 formed on at least a single-sided part 120a side of the sheet main body 120; and a food placement part 160 presenting a lattice shape, which is an aggregate in a square planar shape and formed by pressing in a three-dimensional manner with respect to the sheet main body 120 in which the silicone membrane 140 is formed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an aluminum sheet for cooking, a manufacturing method thereof, and a method of using an aluminum sheet for cooking, and in particular to an aluminum sheet for cooking that is excellent in strength, can be adjusted to any size for use, and can be used repeatedly, a manufacturing method thereof, and a method of using an aluminum sheet for cooking. [Background technology]

[0002] Conventionally, aluminum foil (aluminum leaf) and cooking sheets used for food preparation are distributed as products by, for example, rolling up a paper tube and storing it in a paper box, or by cutting it into a square shape like tissue paper (called cut foil) and storing it in a box. When rolled up on a core, the desired length is pulled out and cut for use. When cut foil is used, the desired number of sheets are taken out of the box and used.

[0003] Generally, aluminum foil is 6μm to 100μm thick, and there are various thicknesses depending on the application. For example, aluminum foil for home use is typically 12μm. Also, the aluminum foil used for wrapping butter and margarine and foil cases is 6μm to 15μm, while the aluminum foil used for gratin containers, nabeyaki udon containers, aluminum dishes, and various kitchen utensils is 50μm to 100μm.

[0004] The following Patent Document 1 discloses a cooking sheet used for heating food in an oven toaster or the like. In this sheet, in order to reduce uneven heating of food, the sheet is made of a first aluminum foil and a second aluminum foil, each of which has a rectangular sheet shape in a plan view and is made of a single piece of aluminum foil. The first aluminum foil can be folded in half, and one side (outer side) is formed with a black colored layer, so that it has a high heat absorption effect on the other side (inner side). When in use, food is placed between the upper surface of the second aluminum foil and a part of the first aluminum foil.

[0005] The following Patent Document 2 discloses a food cooking sheet that has improved balance by allowing for uniform peelability and cooking. In this sheet, a peelable resin layer is laminated on one side of an aluminum foil on the food-placing surface of the aluminum foil, and the resin layer has a sea-island structure in which the recesses are the sea and the protrusions are the islands when viewed from above, forming a continuous sea. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6030948 [Patent Document 2] JP 2020-25859 A DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0007] Aluminum sheets for cooking are generally thin, flexible, and can be easily folded to wrap food ingredients, but because they are soft, they have a problem with strength.

[0008] In addition, most aluminum sheets for cooking are discarded after a single use, which is not desirable from the perspective of environmental impact, especially considering the trend of SDGs (Sustainable Development Goals).

[0009] The one disclosed in Patent Document 1 uses soft aluminum foil with a thickness of 11 μm, which is problematic in terms of strength. Moreover, since it has openings, it is even more disadvantageous in terms of strength. Furthermore, the production of such a cooking sheet requires an increased number of steps and precision, which is disadvantageous in terms of productivity and economy. Furthermore, it is difficult to imagine reusing it after only one use, and there are also difficult aspects from the viewpoint of the impact and burden on the environment.

[0010] The one disclosed in Patent Document 2 has a resin layer laminated on one side of a 12 μm thick aluminum foil, and then embossed with micron-level irregularities, but this is not intended to improve strength. Moreover, the micron-level embossing may make it difficult to handle. In addition, the production of such food preparation sheets requires an increased number of steps and precision, which is disadvantageous in terms of productivity and economy. Furthermore, it is difficult to imagine reusing the sheets after a single use, and there are also difficult aspects in terms of the impact and burden on the environment.

[0011] The present invention has been made in consideration of the above circumstances, and aims to provide an aluminum sheet for cooking that has a simple structure, excellent strength, is flexible, and can be used repeatedly, a method for manufacturing the aluminum sheet for cooking, and a method for using the aluminum sheet for cooking.

[0012] Another object of the present invention is to provide an aluminum sheet for cooking that can be adjusted to any size, is easy to use, is practically useful, and has excellent productivity and cost-effectiveness, a method for manufacturing an aluminum sheet for cooking, and a method for using an aluminum sheet for cooking.

[0013] Furthermore, the present invention aims to provide an aluminum sheet for cooking that is both highly durable and environmentally friendly, a method for manufacturing the aluminum sheet for cooking, and a method for using the aluminum sheet for cooking. [Means for solving the problem]

[0014] In order to achieve the above object, the present invention is characterized by the following configuration.

[0015] (1) This food storage container is characterized by comprising a flat sheet body made of aluminum or an aluminum alloy, a silicone film formed on at least one side of the sheet body, and a food placement section having a lattice shape that is three-dimensionally formed by pressing the sheet body on which the silicone film is formed.

[0016] (2) In the above configuration (1), the sheet body has a thickness of 50 μm or less, and the silicone film has a thickness of 2 μm to 3 μm.

[0017] (3) In the configuration of (1) or (2) above, the food placement section is characterized in that it has a planar shape of a grid made up of a collection of squares with sides of 10 mm or less.

[0018] (4) In the above configuration (1), (2) or (3), a black or dark colored layer is formed on the sheet body on the side on which the silicone film is formed.

[0019] (5) A method for manufacturing an aluminum sheet for cooking, comprising the steps of: forming a silicone film on at least one side of a flat sheet of aluminum or an aluminum alloy; cutting the sheet with the silicone film formed thereon to a predetermined length; and forming an uneven food placing portion on the cut sheet, the food placing portion having a square planar shape with each side being 10 mm or less and a lattice pattern, by press processing.

[0020] (6) A method of using an aluminum sheet for cooking, comprising the steps of (1) to (4) above, folding the outer edge of the aluminum sheet for cooking so that the side on which the silicone film is formed is on the inside, and placing food on the food placement portion.

[0021] The above-mentioned configuration has a simple structure, is excellent in strength, and contributes to improving durability.

[0022] Furthermore, according to the above configuration, the size can be adjusted as desired, making it easy to use, highly flexible, and practically useful. Moreover, it can be manufactured and provided at low cost, making it excellent in productivity and economy.

[0023] Furthermore, the above-mentioned configuration provides the useful effects of being easy to handle, allowing repeated use, and being environmentally friendly. Effect of the Invention

[0024] According to the present invention, it is possible to provide a useful aluminum sheet for cooking that has a simple structure, excellent strength, excellent durability, and can be used repeatedly, and is practical, environmentally friendly, and has excellent productivity and economy. Furthermore, according to the present invention, it is possible to provide an aluminum sheet for cooking that is highly flexible, easy to use, and has practical effects, as the size can be adjusted as desired. [Brief description of the drawings]

[0025] [Figure 1] 1 is a plan view showing a schematic overall configuration of an aluminum sheet for cooking according to one embodiment of the present invention; [Diagram 2] FIG. 2 is a side view showing a schematic view of a portion of the aluminum sheet for cooking in the embodiment. [Diagram 3] 4 is a diagram showing the flow of a manufacturing process of the aluminum sheet for cooking in the embodiment. FIG. [Figure 4] 10A to 10C are diagrams showing the flow of using the aluminum sheet for cooking in the embodiment. [Diagram 5] 10 is a diagram showing a schematic diagram of a state in which the outer edge portion of the aluminum sheet for cooking is folded in the embodiment. FIG. [Figure 6] FIG. 11 is a side view showing a schematic view of a part of a sheet main body provided with a colored layer according to a modified example of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0027] The cooking aluminum sheet 10 of this embodiment is composed of a flat aluminum sheet body 120, a silicone film (i.e., a silicone layer) 140 formed on at least one side 120a of the sheet body 120, and a lattice-shaped food placement portion 160 formed three-dimensionally by pressing on the side of the sheet body 120a on which the silicone film 140 is formed.

[0028] Here, the sheet body 120 has a square planar shape with one side (L1) of 120 mm and a thickness (TA) of 50 μm or less. The size and shape of the sheet body 120 are not limited to this, and can of course be appropriately changed to a square planar shape with one side of 125 mm, a rectangle of 125 mm x 250 mm, or a 118 mm square, etc.

[0029] The thickness (TS) of the silicone film 140 is set to 2 μm to 3 μm. For the sheet body 120 having a thickness (TA) of 50 μm or less, this thickness (TS) is suitable in consideration of repeated use and ease of use.

[0030] Furthermore, food placement section 160 is an assembly of squares with a planar shape of 10 mm on each side (L2) forming a lattice. A concave groove 164 is formed in outer periphery 162a of each square 162. The inside of outer periphery 162a of each square 162 is also raised in a convex shape. Here, the length of one side (L2) of the square to be formed is not limited to 10 mm, but may be any length that is less than or equal to 10 mm.

[0031] The height (H) from the bottom edge of the concave groove 164 to the highest edge of the convex protrusion is 1.0 mm. However, this is not limited to this and may be other heights, and can be changed as appropriate.

[0032] The aluminum sheet for cooking 10 having such a structure is manufactured as follows.

[0033] First, a silicone film 140 is formed with a uniform thickness on one side of an aluminum sheet (see step S320 in FIG. 3).

[0034] Next, the aluminum sheet on which the silicone film 140 is formed is cut to a predetermined length, for example, a square shape measuring 120 mm×120 mm in plan view (step S340), thereby completing the sheet body 120.

[0035] Then, the food placement section 160 having a lattice-like unevenness as a collection of squares with a side length of 10 mm in a plan view is formed on the sheet body 120 by pressing (step S360). Thus, the aluminum sheet 10 for cooking is completed.

[0036] The completed aluminum sheets 10 for cooking are bundled in a predetermined number and stored in a storage box, for example, like tissue paper, and are ready for distribution as a commodity (step S380).

[0037] In this embodiment, the aluminum sheet 10 for cooking is made of aluminum, but it goes without saying that a flat sheet made of an aluminum alloy may also be used.

[0038] Furthermore, the aluminum sheet for cooking 10 may of course be rolled up around a paper tube, placed in a paper box, and distributed as a commodity.

[0039] The method of use and the action of the above-mentioned configuration will be described below.

[0040] First, the outer peripheral edge portion of the aluminum sheet 10 for cooking, i.e., the outer peripheral edge portion 120b of the sheet body 120, is folded, for example, vertically so that the one side portion 120a on which the silicone film 140 is formed faces inward (see step S420 in FIG. 4). That is, in FIG. 5, the outer peripheral edge portion 120b is folded in the vertical direction (Y) in the direction of arrow A so that the one side portion 120a faces inward. Then, the aluminum sheet 10 for cooking has a container shape with an open top.

[0041] The food material (F) to be cooked is placed on the food placement portion 160 of the aluminum sheet for cooking 10 transformed into this state (step S440), and then cooked, for example, on a gas stove or in an electric oven (step S460).

[0042] After cooking, the food (F) placed on the food placement section 160 of the cooking aluminum sheet 10 can be removed (step S480). Here, the food placement section 160 on which the food (F) is placed is formed with a silicone film 140, which makes it difficult for dirt, grease, etc. to adhere, makes it easy to clean, and allows for repeated use. In addition, the sheet body 120 has a three-dimensional lattice-shaped food placement section 160, which increases its strength compared to a flat sheet, and the cooking sheet 10 can be used safely and securely while maintaining the desired shape.

[0043] According to the above embodiment, it is possible to provide a cooking sheet 10 that has an extremely simple structure, excellent strength, contributes to improved durability, can be adjusted to any size, is easy to use, is highly flexible, is practically useful, and can be manufactured and provided at low cost, making it highly productive and economical.

[0044] Furthermore, according to the above embodiment, the aluminum sheet has excellent handleability without compromising its original functions, can be used repeatedly, and is environmentally friendly, providing practical and socially useful effects.

[0045] It should be noted that the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0046] For example, FIG. 6 shows a modification of the above embodiment. In this modification, the same parts and / or functions as those in the above embodiment are denoted by the same reference numerals and the description of those parts is omitted.

[0047] 6, a colored layer 180 made of heat-resistant black paint is formed on at least one surface 120a of the sheet body 120. The silicone film 140 is then formed on this colored layer 180.

[0048] This makes it even more difficult for dirt, oil, and the like to adhere to the surface, and dirt and the like becomes even less noticeable, allowing for even more continuous use. In addition, the colored layer 180 makes it easy to identify the surface to which the silicone film 140 is applied, which is convenient for use.

[0049] Here, the colored layer 180 is formed by, for example, a printing method or a painting method. The thickness of the colored layer 180 is about 10 to 30 μm in the case of a printing method, and about 10 to 15 μm in the case of a painting method, but it is not limited to this and can be changed appropriately.

[0050] Furthermore, the colored layer 180 to be formed is not limited to black paint, and may of course be paint, pigment, dye, etc. of a dark black color that does not show dirt or a dark color (such as navy blue) that does not show dirt or the like. [Explanation of symbols]

[0051] 10. Aluminum sheet for cooking 120 ... Seat body 120a...Single side part 140 ... Silicone membrane 160 ... Food placement section 180…Colored layer

Claims

1. a food placement section having a lattice shape formed three-dimensionally by pressing a flat sheet body made of aluminum or an aluminum alloy; and a silicone film formed on at least the food placement portion of the sheet body. The aluminum sheet for cooking is characterized in that the thickness of the silicone film is 2 μm to 3 μm.

2. 2. The aluminum sheet for cooking according to claim 1, wherein the thickness of the sheet body is 50 μm or less.

3. 3. The aluminum sheet for cooking according to claim 1, wherein the food placement portion is a collection of squares with sides each measuring 10 mm or less in plan view, forming a lattice shape.

4. 4. The aluminum sheet for cooking according to claim 1, 2 or 3, wherein a colored layer of a black or dark color is formed on the sheet body on the side on which the silicone film is formed.

5. forming a silicone film on at least one side of a flat sheet of aluminum or aluminum alloy; cutting the sheet having the silicone film formed thereon to a predetermined length; and forming a food placement portion having a square shape with a side of 10 mm or less and a lattice shape and a concave-convex shape on the cut sheet by pressing the sheet. A method for producing an aluminum sheet for cooking, characterized in that the thickness of the silicone film on the aluminum sheet for cooking is 2 μm to 3 μm.

6. 5. The aluminum sheet for cooking according to claim 1, wherein the outer peripheral edge of the aluminum sheet for cooking is folded so that the surface on which the silicone film is formed faces inward. A method of using the aluminum sheet for cooking, characterized in that food is placed on the food placement portion.

Images