Baking tray for bread baking and method for manufacturing baking tray for bread baking

Abstract

To provide a baking tray for bread baking that is robust and resistant to deformation, prevents contamination by foreign objects, is superior in hygiene, and can be implemented with a simple configuration.SOLUTION: A baking tray for bread baking comprises: a metal bottom portion 12: a side plate portion 14 formed by raising a peripheral edge of the bottom portion 12; a flange portion 16 formed to extend outwardly from a peripheral edge 14a of the side plate portion 14 and having an outer peripheral edge 16a bent to contact the outer periphery 14b of the side plate portion 14; and a metal reinforcing member 18 positioned on the outer periphery 14b of the side plate portion 14 so as to be sealed at this flange portion 16 and the outer periphery 14b of the side plate portion 14, and enclosed within the flange portion 16.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a baking tray and a method for manufacturing the same, and more particularly to a baking tray that is resistant to deformation, hygienic, and easy to use, and a method for manufacturing the same. [Background technology]

[0002] Conventionally, when baking bread, baked goods, etc. in an oven, a container that is rectangular in plan view, called a baking sheet (also called a tray), is used. Generally, there are two types of baking sheets: Japanese standard baking sheets and European standard baking sheets, and various types are available in terms of materials, surface treatments, etc.

[0003] Furthermore, since the top plate is used repeatedly, it is required to have high thermal conductivity and light weight in consideration of work efficiency and durability.

[0004] Patent Document 1 discloses an aluminum baking tray that can bake delicious, elastic bread with a good brown color in a short time. This tray is designed to be reinforced by attaching reinforcing materials such as iron bars to the inside of the folded part, thereby preventing the tray from losing its shape due to impact.

[0005] Patent Document 2 discloses a strong, deformation-resistant baking tray for bread baking that uses steel plate. In this baking tray, the flange of the baking tray is bent to enclose a reinforcing iron core, and the end faces of the bent portions are spot-welded to the side plates of the baking tray a desired number of times, thereby preventing rust and dust accumulated inside the flange from escaping and preventing deformation such as bending of the flange due to use. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Utility Model Application Publication No. 5-60287 [Patent Document 2] Utility Model Registration No. 3110498 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0007] As mentioned above, since the baking tray is used repeatedly, various measures have been taken to prevent this. However, repeated use can cause the baking tray to become dirty, rust, and deform due to aging due to the adhesion of baked product residue or fine dust or the inclusion of foreign matter. This is particularly noticeable near the flange and side panels, which can cause hygiene problems.

[0008] The device disclosed in Patent Document 1 is designed to prevent the shape of the top plate from being distorted, but does not take any measures to prevent dirt and rust on the flange portion (reinforced edge).

[0009] The device disclosed in Patent Document 2 is designed to prevent deformation such as bending of the flange and to prevent rust and debris accumulated inside the flange from spilling out. However, the tip end of the flange is only spot-welded to the side panel of the top plate in a few places, and there is an undeniable risk that the accumulated rust and debris may accidentally fly out.

[0010] The present invention has been made in consideration of the above circumstances, and aims to provide a baking tray for bread making that is strong, resistant to deformation, prevents the inclusion of foreign matter, and is hygienic, as well as a method for manufacturing such a baking tray. Another object of the present invention is to provide a baking tray for bread making and a method for manufacturing the baking tray that has a simple configuration and can be realized without making major changes to the conventional baking tray manufacturing process. [Means for solving the problem]

[0011] In order to achieve the above object, the present invention has the following configuration.

[0012] (1) The container is characterized by comprising a metal bottom portion, a side plate portion formed by raising the peripheral edge of the bottom portion, a flange portion formed on the peripheral edge of the side plate portion so as to point outward and whose outer peripheral edge is bent so as to abut against the outer periphery of the side plate portion, and a metal reinforcing member enclosed in the flange portion and positioned on the outer periphery of the side plate portion so as to form a sealed state between the flange portion and the outer periphery of the side plate portion.

[0013] (2) In the configuration of (1) above, the surfaces of the bottom surface, the side plate and the flange are provided with a coating layer.

[0014] (3) A method for manufacturing a baking tray for bread making, comprising: The method comprises a drawing process for forming a bottom surface portion having a rectangular shape in plan view obtained by forming a metal base material into a predetermined shape, a side plate portion formed on the peripheral edge of the bottom surface portion, and a flange portion formed on the peripheral edge of the side plate portion so as to point outward; a trimming process for cutting off unnecessary edges of the flange portion formed in the drawing process; a rise-forming process for forming the outer peripheral edge portion of the flange portion cut off in the trimming process so as to be raised at a predetermined angle; a bending process for arranging a metal reinforcing member on the flange portion so as to be located on the outer periphery of the side plate portion, and bending the outer peripheral edge portion of the flange portion raised at the predetermined angle in the rise-forming process so as to abut against the outer periphery of the side plate portion so that the reinforcing member is contained within; and a process for processing the outer peripheral edge portion of the flange portion bent in the bending process so as to abut against the outer periphery of the side plate portion so as to be in surface contact with the reinforcing member.

[0015] The above-mentioned structure makes it possible to provide a baking tray for bread making that is simple in structure, strong and resistant to deformation, prevents the intrusion of foreign matter, and is also hygienic. Moreover, the above-mentioned structure also provides excellent productivity and economic efficiency.

[0016] Furthermore, the above-described configuration can be realized without making any major changes to the conventional top plate manufacturing process, and is therefore practical and useful.

[0017] Furthermore, the above configuration can be realized with less environmental impact, and can contribute to ensuring sustainable production and consumption patterns in line with the SDGs (Sustainable Development Goals). [Effects of the Invention]

[0018] According to the present invention, it is possible to provide a baking tray for bread making that is strong, resistant to deformation, prevents the intrusion of foreign matter, and is therefore hygienic. Furthermore, the present invention can be realized with a simple configuration without making major changes to the conventional top plate manufacturing process, and has excellent effects in terms of productivity, economy, and the environment. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a plan view of a baking tray according to an embodiment of the present invention; [Figure 2] FIG. 2 is a front view of the baking tray according to the embodiment. [Figure 3] FIG. 2 is a vertical cross-sectional front view of the essential parts of the baking tray for bread making according to the embodiment (however, the coating layer is not shown). [Figure 4] 10A to 10C are diagrams showing the flow of a manufacturing process for a baking tray according to the embodiment. [Figure 5] 10A and 10B are diagrams showing a drawing process for a baking tray according to the embodiment, in which (a) is a bottom view and (b) is a vertical cross-sectional front view (hatching is omitted). [Figure 6] 10A and 10B are diagrams showing a trimming process for a baking tray according to the embodiment, in which (a) is a bottom view and (b) is a vertical cross-sectional front view (hatching is omitted). [Figure 7] 10A and 10B are diagrams showing a schematic diagram of a step of forming a baking tray for use in baking bread according to the embodiment, in which (a) is a bottom view and (b) is a vertical cross-sectional front view (hatching is omitted). [Figure 8] 10A and 10B are diagrams showing a bending process of a baking tray according to the embodiment, in which (a) is a bottom view and (b) is a vertical cross-sectional front view (hatching is omitted). [Figure 9] 10A and 10B are diagrams showing a schematic diagram of a surface contact processing step of a baking tray according to the embodiment, in which (a) is a bottom view and (b) is a vertical cross-sectional front view (hatching is omitted). DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

[0021] The baking tray (hereinafter referred to as "baking tray") 10 of this embodiment is called a six-cavity baking tray, and is composed of a bottom surface 12 that is rectangular in plan view and is obtained by molding a metal base material (B) into a predetermined shape, side panels 14 that are formed by raising the peripheral edge of this bottom surface 12, flanges 16 that are formed on the peripheral edge 14a of this side panel 14 so as to point outward and whose outer peripheral edge 16a is bent so as to abut against the outer peripheral edge 14b of the side panel 14, and a metal reinforcing member 18 that is positioned on the outer peripheral edge 14b of the side panel 14 so that the flanges 16 and the outer peripheral edge 14b of the side panel 14 are sealed, and is enclosed in the flanges 16. The metal substrate may be, for example, an iron plate, an aluminum-plated metal steel plate, or a tin-plated steel plate, but is not limited to these and can of course be changed to other metal substrates as appropriate. The plate thickness is, for example, 1.0 mm, and is preferably 0.7 mm to 1.5 mm, but is not limited to these.

[0022] Additionally, the surfaces of the bottom surface portion 12, the side plate portion 14 and the flange portion 16 are provided with a coating layer 20 made of, for example, silicone resin or fluororesin.

[0023] The bottom surface portion 12 has a rectangular shape in plan view and measures 530 mm x 380 mm.

[0024] The side plate portions 14 are formed to rise substantially perpendicularly to the bottom surface portion 12, and their height (H) is 15 mm to 45 mm.

[0025] The flange portion 16 is formed on the peripheral edge portion 14a of the side plate portion 14 so as to face outward, and the outer peripheral edge portion 16a is bent so as to face inward in a curled shape, with the tip portion 16b of the outer peripheral edge portion 16a abutting against the outer peripheral portion 14b of the side plate portion 14. The inside of the curled portion has a hollow structure so that a reinforcing member 18 can be disposed therein.

[0026] The reinforcing member 18 is, for example, a core rod made of iron, aluminum-plated metal, or bell-plated metal with a maximum diameter of 3 mm to 6 mm. Its cross-sectional shape may be circular, angular, or a combination of these. In this embodiment, to achieve a simple manufacturing process, the reinforcing member 18 has a pentagonal cross-sectional shape, like a trapezoid with a portion missing.

[0027] Regarding the above configuration, a method for manufacturing the top plate 10 will be described below.

[0028] First, a metal substrate is drawn to form bottom surface 12, side plate portions 14 formed so that the peripheral edge of bottom surface 12 rises vertically, and flange portions 16 directed outward on peripheral edge portions 14a of side plate portions 14 (see step S402 in FIG. 4 and FIG. 5). Here, the metal substrate used in this embodiment is preferably drawn to have dimensions that are approximately 1 mm to 3 mm larger in length and width than conventional substrates, i.e., conventional substrates used in manufacturing six-cavity or eight-cavity baking sheets. The vertical cross-sectional front views of Figs. 5 to 9 show the state where the bottom surface is facing upward.

[0029] Next, unnecessary edges of the flange portion 16 are trimmed (step S404, see FIG. 6).

[0030] Next, the outer peripheral edge 16a of the flange portion 16 is formed so as to rise at a predetermined angle, for example, vertically (step S406, see FIG. 7).

[0031] Furthermore, the reinforcing member 18 is placed on the flange portion 16 so as to be positioned at the outer periphery 14b of the side plate portion 14. Then, the outer periphery edge portion 16a (tip portion 16b) of the raised flange portion 16 is bent into a curled shape so as to abut against the outer periphery 14b of the side plate portion 14 so as to enclose the reinforcing member 18 (step S408, see FIG. 8). Here, the curled portion has an inner diameter of 6 to 8 mm.

[0032] Finally, the outer peripheral edge 16a (inner side) of the flange 16, which is bent in a curled shape so as to abut against the outer peripheral portion 14b of the side plate portion 14, is processed so as to come into surface contact with the reinforcing member 18 (step S410, see FIG. 9).

[0033] The coating layer 20 may be applied to the metal substrate in advance or after the final process. In this embodiment, the coating layer 20 is applied to at least one surface of the bottom surface portion 12 and the side plate portion 14, but this is not limitative. As another example, the coating layer 20 may of course be applied to the entire surface including the flange portion 16.

[0034] The top plate 10 completed in this manner has the outer peripheral edge 16a of the flange portion 16 formed in a curled shape, and the outer peripheral edge 16a abuts against the outer peripheral portion 14b of the side plate portion 14 so as to enclose the reinforcing member 18, so it is stronger than conventional products, there is no risk of deformation due to long-term use, etc., durability is increased, and it is practically useful.

[0035] Furthermore, since the reinforcing member 18 is arranged in a sealed space, it is possible to reliably prevent the intrusion of foreign matter, etc., and it is advantageous from a hygienic standpoint as it can eliminate various problems caused by the intrusion of foreign matter that occur in conventional products where the reinforcing member is not sealed, such as the spread of contaminated foreign matter into the food production line and corrosion due to rust.

[0036] Generally, tabletops require maintenance after a certain period of time, such as removing burnt marks and correcting deformations. In conventional products, the reinforcing members are not sealed, so dirt and rust on the reinforcing members or their vicinity cannot be completely removed, resulting in problems with hygiene and durability. However, with the tabletop 10 of this embodiment, such problems do not occur, making it extremely practical and effective.

[0037] Furthermore, the table top 10 according to this embodiment can be produced without making major changes to the conventional table top manufacturing process, and therefore places less of a burden on the environment, and is also effective in terms of productivity, economy, and the environment.

[0038] 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 gist of the present invention. [Explanation of symbols]

[0039] 10...Baking tray (baking tray for bread making) 12…Bottom part 14...Side plate part 14a...periphery 14b...Outer periphery 16...Flange part 16a...Outer edge 18...Reinforcing member 20...coating layer

Claims

1. A metal bottom part, a side plate portion formed by raising a peripheral edge portion of the bottom surface portion; a flange portion formed on the peripheral edge of the side plate portion so as to be directed outward, and the outer peripheral edge portion of the flange portion is bent so as to abut against the outer peripheral portion of the side plate portion; This baking tray is characterized by having a metal reinforcing member that is positioned on the outer periphery of the side plate portion so as to form a sealed state at the flange portion and the outer periphery of the side plate portion, and is enclosed in the flange portion.

2. 2. The baking tray according to claim 1, wherein the surfaces of the bottom portion, the side plate portion and the flange portion are provided with a coating layer.

3. a drawing process for forming a bottom surface portion having a rectangular shape in plan view obtained by forming a metal base material into a predetermined shape, a side plate portion formed on the peripheral edge of the bottom surface portion, and a flange portion formed on the peripheral edge of the side plate portion so as to point outward; a trimming process for cutting off unnecessary edges of the flange formed in the drawing process; a rising forming step of forming the outer peripheral edge of the flange portion cut in the trimming step so that the outer peripheral edge is raised at a predetermined angle; a bending process in which a metallic reinforcing member is disposed on the flange portion so as to be positioned on the outer periphery of the side plate portion, and the outer periphery of the flange portion, which has been raised at a predetermined angle in the raising forming process, is bent so as to abut against the outer periphery of the side plate portion so as to include the reinforcing member; and a process step of processing the outer edge of the flange portion bent in this bending step so as to abut against the outer periphery of the side plate portion so as to be in surface contact with the reinforcing member.

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