Ceramic crucible with two-dimensional code and method for attaching two-dimensional code to ceramic crucible

Abstract

An object of the present invention is to provide a sagger with a two-dimensional code that can read the two-dimensional code, reduce the occurrence of defective products, and is easy to mass-produce, and a method for attaching the two-dimensional code to the sagger. 【Solution means】The sagger 1 with a two-dimensional code of the present invention has a base material layer 3 for adhering a ceramic label formed at a required part of the sagger body 2 and a ceramic label 4 with a two-dimensional code fixed to the surface of the base material layer 3 for adhering a ceramic label.

Description

Technical Field

[0001] The present invention relates to a two-dimensional code-attached crucible with a two-dimensional code attached thereto and a method for attaching the two-dimensional code to the crucible.

Background Art

[0002] Conventionally, two-dimensional codes (for example, QR codes (registered trademarks), barcodes, data matrices, etc.) have been attached to products for individual management. However, it has been difficult to attach these two-dimensional codes in a readable manner to crucibles (containers for firing ceramic fired bodies) that are used at high temperatures, and thus they have not been used.

[0003] On the other hand, regarding the individual management of crucibles, there have been proposed an identification structure for a firing crucible in which a cut groove forming an identification code is formed at a predetermined part of the crucible (Japanese Patent Laid-Open No. 6-94375), and an identification structure for a firing crucible in which a reaction-preventing undercoat film mainly composed of zirconia is formed on at least a marking formation surface of a crucible body made of ceramic, and an identification mark mainly composed of iron oxide powder having a purity of 90% or more is formed on the undercoat film (Japanese Patent Laid-Open No. 6-42884).

[0004] However, when a two-dimensional code is attached to a crucible and fired, as shown in FIG. 7, the two-dimensional code is warped due to the unevenness of the surface of the crucible body, or as shown in FIG. 8, air enters the gap due to insufficient adhesion between the two-dimensional code and the surface of the crucible body, causing bubbles to burst, or as shown in FIG. 9, the two-dimensional code is dissolved due to poor penetration to the surface of the crucible body, resulting in a large number of unreadable defective products. In addition, the identification structures of the firing crucibles disclosed in Japanese Patent Laid-Open No. 6-94375 and Japanese Patent Laid-Open No. 6-42884 have the problem that mass production is difficult.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] Therefore, an object of the present invention is to provide a sagger with a two-dimensional code that can read the two-dimensional code, reduce the occurrence of defective products, and is easy to mass-produce, and a method for attaching a two-dimensional code to the sagger.

Means for Solving the Problems

[0007] What solves the above problems is that it has a base material layer for ceramic label adhesion formed at a required part of the sagger body, and a ceramic label with a two-dimensional code fixed to the surface of the base material layer for ceramic label adhesion , the base material for ceramic label adhesion that constitutes the ceramic label adhesion base material layer is formed by adding a binder to a mixed powder containing 5 to 40% by weight of alumina powder, 5 to 20% by weight of silica powder, 0 to 70% by weight of spinel powder, and 5 to 30% by weight of cordierite powder to make a slurry. This is a sagger with a two-dimensional code, characterized by this (Claim 1).

[0009] Also, what solves the above problems is a base treatment step of forming a base material layer for ceramic label adhesion at a required part of the sagger body, a label attachment step of attaching a ceramic label with a two-dimensional code to the surface of the base material layer for ceramic label adhesion, and a firing step of firing the sagger body to which the ceramic label with a two-dimensional code is attached to fix the ceramic label with a two-dimensional code to the sagger body , the base material for ceramic label adhesion that constitutes the ceramic label adhesion base material layer is formed by adding a binder to a mixed powder containing 5 to 40% by weight of alumina powder, 5 to 20% by weight of silica powder, 0 to 70% by weight of spinel powder, and 5 to 30% by weight of cordierite powder to make a slurry. This is a method for attaching a two-dimensional code to a sagger, characterized by this (Claim 2 )

Effects of the Invention

[0011] According to the sagger with a two-dimensional code described in Claim 1, a sagger with a two-dimensional code that can read the two-dimensional code, reduce the occurrence of defective products, and is easy to mass-produce At the same time, it is possible to form a ceramic label adhesion base material layer with higher adhesion to the two-dimensional code and capable of forming a smoother surface between the two-dimensional code. Claim 2 According to the method for attaching a two-dimensional code to a sagger described in, the two-dimensional code can be attached so as to be readable, the occurrence of defective products can be reduced, and mass production is easy At the same time, it is possible to form a ceramic label adhesion base material layer with higher adhesion to the two-dimensional code and capable of forming a smoother surface between the two-dimensional code.

Brief Description of the Drawings

[0012] [Figure 1] It is a partial cross-sectional view of an embodiment of the sagger with a two-dimensional code of the present invention. [Figure 2] It is a front-side photograph of an embodiment of the sagger with a two-dimensional code of the present invention. [Figure 3] It is an enlarged photograph of the two-dimensional code (QR code (registered trademark) part) of the sagger with a two-dimensional code shown in FIG. 2. [Figure 4] It is a manufacturing process chart of an embodiment of the method for attaching a two-dimensional code to the sagger of the present invention. [Figure 5] It is a table for explaining the defective rate of the sagger with a two-dimensional code of the embodiment. [Figure 6] It is a table for explaining the defective rate of the sagger with a two-dimensional code of the comparative example. [Figure 7] It is a photograph for explaining a defective example of the sagger with a two-dimensional code. [Figure 8] It is a photograph for explaining another defective example of the sagger with a two-dimensional code. [Figure 9] It is a photograph for explaining another defective example of the sagger with a two-dimensional code.

Modes for Carrying Out the Invention

[0013] In the present invention, the sagger 1 with a two-dimensional code of the present invention has a ceramic label adhesion base material layer 3 formed at a required part of the sagger body 2 and a ceramic label with a two-dimensional code 4 fixed on the surface of the ceramic label adhesion base material layer 3. Thus, a sagger 1 with a two-dimensional code in which the two-dimensional code can be read, the occurrence of defective products can be reduced, and mass production is easy, and a method for attaching a two-dimensional code to the sagger are realized.

Examples

[0014] The sagger with a two-dimensional code of the present invention and the method for attaching a two-dimensional code to the sagger will be described using an embodiment shown in FIGS. 1 to 5. As shown in Fig. 1, the two-dimensional code-attached sagger 1 of this embodiment has a ceramic label adhesion base material layer 3 formed at a required part of the sagger body 2 and a two-dimensional code-attached ceramic label 4 fixed to the surface of the ceramic label adhesion base material layer 3. Hereinafter, each component will be described in detail in sequence.

[0015] The ceramic label adhesion base material layer 3 is provided to improve the adhesion of the two-dimensional code-attached ceramic label 4. In this embodiment, as shown in Fig. 2, it is formed at a required part (the surface of the front side wall of the sagger body 2) of the sagger body 2 (a bottomed rectangular cylinder with an open upper end). However, the part where the ceramic label adhesion base material layer is provided is not limited to the surface of the front side wall of the sagger body 2, and any part on the surface of the sagger body 2 may be used.

[0016] The ceramic label adhesion base material constituting the ceramic label adhesion base material layer 3 uses a material that improves the adhesion with the two-dimensional code-attached ceramic label 4. By applying the ceramic label adhesion base material, the unevenness on the surface of the sagger body 2 is corrected, preventing the two-dimensional code from being curled due to the unevenness (Fig. 7), preventing air from entering the gap due to insufficient adhesion between the two-dimensional code and the surface of the sagger body 2 and causing the bubbles to burst (Fig. 8), and further preventing the two-dimensional code from dissolving due to poor penetration into the surface of the sagger body 2 (Fig. 9), enabling reading.

[0017] As the ceramic label adhesion base material, a slurry obtained by adding a binder to a mixed powder containing 5 to 40 wt% of alumina powder, 5 to 20 wt% of silica powder, 0 to 70 wt% of spinel powder, and 5 to 30 wt% of cordierite powder can be preferably used.

[0018] In the above mixed powder, the alumina powder is blended to improve heat resistance. If the alumina powder is less than 5 wt%, the heat resistance is insufficient, and if it exceeds 40 wt%, the melting of the base is suppressed, and the effect as a base material is lost.

[0019] The silica powder is compounded for imparting adhesiveness and smoothing the surface. If the silica powder is less than 5% by weight, the adhesiveness is insufficient, and if it exceeds 20% by weight, the smoothness deteriorates.

[0020] The spinel powder is compounded for suppressing the permeability of the printed matter. If the spinel powder exceeds 70% by weight, the melting of the base is suppressed and the effect of the base material is lost.

[0021] The cordierite powder is compounded for heat-resistant spalling resistance. If the cordierite powder is less than 5% by weight, the heat-resistant spalling resistance is insufficient, and if it exceeds 30% by weight, the density deteriorates.

[0022] In addition, the above mixed powder may be compounded again, or the ground product after drying or the fired and ground product during the production of the sagger may be used. Further, as the binder, for example, a CMC solution can be preferably used. Furthermore, dilute hydrochloric acid may be added to prevent the separation of solids and liquids in the slurry.

[0023] The ceramic label 4 with a two-dimensional code is a ceramic label having a two-dimensional code for attaching the two-dimensional code to the sagger body 2. Any two-dimensional code may be used as long as it is a two-dimensional identification display capable of managing the individual of the sagger body 2. For example, a QR code (registered trademark), a data matrix, a barcode, a combination of numbers, characters, etc. can be preferably used.

[0024] After the ceramic label 4 with a two-dimensional code is attached to the surface of the base material layer 3 for adhering the ceramic label and then fired, it is fixed to the surface of the base material layer 3 for adhering the ceramic label as shown in FIGS. 1 to 3. As a result, the sagger 1 with a two-dimensional code of this embodiment is a sagger with a two-dimensional code that can read the two-dimensional code, can reduce the occurrence of defective products, and is easy to mass-produce.

[0025] Next, a method for attaching a two-dimensional code to the sagger of the present invention will be described using an example shown in FIGS. 1 to 4. The method for attaching a two-dimensional code to the sagger 1 of this embodiment includes a base treatment step of forming a base material layer 3 for ceramic label adhesion at a required part of the sagger body 2, a label attachment step of attaching a ceramic label 4 with a two-dimensional code to the surface of the base material layer 3 for ceramic label adhesion, and a firing step of firing the sagger body 2 to which the ceramic label 4 with a two-dimensional code is attached to fix the ceramic label 4 with a two-dimensional code to the sagger body 2. Hereinafter, each step will be described in detail in sequence.

[0026] The method for attaching a two-dimensional code to the sagger 1 of this embodiment is performed after the drying step during the manufacturing process of the sagger shown in FIG. 4. However, the method for attaching a two-dimensional code to the sagger of the present invention is not limited to this, and those performed after the firing step of the sagger itself and fired with a gas burner or the like through the base treatment step and the label attachment step are also included in the scope of the present invention.

[0027] In the base treatment step of forming the base material layer 3 for ceramic label adhesion at a required part of the sagger body 2, as shown in FIG. 1 or FIG. 2, a base material for ceramic label adhesion is applied to a required part (the front side wall surface of the sagger body 2) of the sagger body 2 to form a smooth surface for base treatment.

[0028] As the base material for ceramic label adhesion, a mixed powder containing 5 to 40% by weight of alumina powder, 5 to 20% by weight of silica powder, 0 to 70% by weight of spinel powder, and 5 to 30% by weight of cordierite powder with a binder added to form a slurry can be preferably used.

[0029] In the label attachment step of attaching the ceramic label 4 with a two-dimensional code to the surface of the base material layer 3 for ceramic label adhesion, the ceramic label 4 is attached to the surface of the slurry-like base material layer 3 for ceramic label adhesion.

[0030] The ceramic label 4 with a two-dimensional code is a ceramic label having a two-dimensional code for attaching the two-dimensional code to the crucible body 2. Any two-dimensional code may be used as long as it is a two-dimensional identification display that enables individual management of the crucible body 2. For example, a QR code (registered trademark), a data matrix, a barcode, a combination of numbers, letters, etc. can be preferably used. In this embodiment, as shown in FIG. 2, a combination of a QR code (registered trademark) and numbers is used.

[0031] In the firing process of firing the crucible body 2 with the ceramic label 4 with a two-dimensional code attached thereto to fix the ceramic label 4 with a two-dimensional code to the crucible body 2, the crucible body 2 with the ceramic label 4 with a two-dimensional code attached thereto is placed in a furnace and fired at a firing temperature of 1000 ° C or higher for 9 to 18 hours. As a result, the ceramic label 4 with a two-dimensional code is fired together with the crucible body 2, the ceramic label 4 with a two-dimensional code is fixed to the crucible body 2, the two-dimensional code can be read, the occurrence of defective products can be reduced, and the crucible 1 with a two-dimensional code can be easily mass-produced.

[0032] (Defect rate comparison test) (Example) On the formed crucible product, as a base material for close adhesion of the ceramic label, a slurry obtained by adding a binder (CMC solution) and dilute hydrochloric acid to a mixed powder containing 20% by weight of alumina powder, 12.5% by weight of silica powder, 50% by weight of spinel powder and 15% by weight of cordierite powder was used for the base treatment to form a base material layer 3 for close adhesion of the ceramic label. A ceramic label 4 with a two-dimensional code (a ceramic label manufactured by Sigma Max Co., Ltd.: Cera Label (registered trademark)) was attached to the surface, placed in a furnace, and fired at a firing temperature of 1000 ° C or higher for 18 hours to prepare an example. In this case, a QR code (registered trademark) (error correction level H) was adopted as the two-dimensional code, and those that could not be read by a QR reader (registered trademark) or those that took 5 seconds or more to read were regarded as defective.

[0033] (Comparative example) A comparative example was prepared through the same steps as in the examples, except that a base treatment step of forming a base material layer 3 for adhering a ceramic label was not performed on the required parts of the sagger body 2.

[0034] (Test Results and Discussion) As shown in Fig. 5, out of 3779 examples, 94 could not read the two-dimensional code, and the defective rate was 2.5%.

[0035] On the other hand, as shown in Fig. 6, in the comparative example where the base treatment step was not performed, in the first test, out of 199 comparative examples, 55 could not read the two-dimensional code, and the defective rate was 27.6%. Also, in the second test, out of 134 comparative examples, 35 could not read the two-dimensional code, and the defective rate was 26.1%.

[0036] (Discussion) From the results of the above defective rate comparison test, the sagger with a base material layer for adhering a ceramic label or the sagger (example) produced through a base treatment step of forming a base material layer for adhering a ceramic label had a defective rate of 1 / 10 or less compared to the sagger without a base material layer 3 for adhering a ceramic label or the sagger (comparative example) produced without performing the base treatment step of forming a base material layer for adhering a ceramic label. As a result, it was confirmed that the examples were more capable of reading two-dimensional codes compared to the comparative examples and significantly reduced the occurrence of defective products.

Explanation of Reference Signs

[0037] 1 Sagger with Two-Dimensional Code 2 Sagger Body 3 Base Material Layer for Adhering Ceramic Label 4 Ceramic Label with Two-Dimensional Code

Claims

1. It has a base material layer for ceramic label adhesion formed at a required part of the sagger body, and a ceramic label with a two-dimensional code fixed to the surface of the base material layer for ceramic label adhesion. The base material for ceramic label adhesion that constitutes the base material layer for ceramic label adhesion is formed by adding a binder to a mixed powder containing 5 to 40% by weight of alumina powder, 5 to 20% by weight of silica powder, 0 to 70% by weight of spinel powder, and 5 to 30% by weight of cordierite powder to make a slurry. A sagger with a two-dimensional code, characterized in that.

2. It has a base treatment step of forming a base material layer for ceramic label adhesion at a required part of the sagger body, a label pasting step of pasting a ceramic label with a two-dimensional code on the surface of the base material layer for ceramic label adhesion, and a firing step of firing the sagger body with the ceramic label with a two-dimensional code pasted thereon to fix the ceramic label with a two-dimensional code to the sagger body. The base material for ceramic label adhesion that constitutes the base material layer for ceramic label adhesion is formed by adding a binder to a mixed powder containing 5 to 40% by weight of alumina powder, 5 to 20% by weight of silica powder, 0 to 70% by weight of spinel powder, and 5 to 30% by weight of cordierite powder to make a slurry. A method for attaching a two-dimensional code to a sagger, characterized in that.

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