JPH09315053A - Identifier and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an identifier having excellent wear resistance and a method for manufacturing it. SOLUTION: This identifier comprises a laminate 4 obtained by laminating two ceramic layers 2, 3 having different lightnesses in such a manner that openings 6 arriving from the surface 2a of the layer 2 to the other layer 3 are opened at one layer 2 to form an identification mark 5 capable of being recognized by the bright or dark of the surface 2a of the one layer 2 and the other layer 3 opposed to the opening 6. A laminate 15 is an enamel layer 14 covering the surface of a metal plate 18. The one ceramic layer is an upper glazed layer 12, the other ceramic layer is a lower glazed layer 13, and the opening 6 (16) is opened by blast processing or laser processing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an identifier having an identification mark such as a bar code and having excellent heat resistance and abrasion resistance, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, as an identifier having excellent heat resistance,
There are those in which an identification mark made of a calcined pigment is burned on the surface of an alumina substrate, and those in which an identification mark made of a calcined pigment is burned on the surface of an enamel layer attached to a metal substrate (see Japanese Patent Publication No. 4-34541). The identification mark is formed by firing after being drawn by a printing method or a transfer method using a transfer paper.

[0003]

However, since the identification mark drawn by the printing method or the transfer method has a thickness of about several μm, when it comes into contact with another object or collides with high-pressure washing water, It easily disappears. Therefore, in the field of use in which the identifying body is attached to a carrying pallet, a carrying frame, a carrying container, or the like, the appearance of an identifying body having excellent abrasion resistance is required.

Therefore, in order to meet the above-mentioned demands, the invention according to claims 1 and 2 aims to provide an identifier which is excellent in heat resistance and abrasion resistance. Further, in order to meet the above-mentioned demands, the invention according to claims 3 to 5 aims to provide a method for producing an identifier which is excellent in heat resistance and abrasion resistance.

[0005]

The gist of the present invention according to claim 1 is to provide a laminated body in which two ceramic layers having different lightness are laminated, and one ceramic layer is provided from the surface of the ceramic layer to the other. The opening to the ceramic layer is opened,
The identification body is characterized in that an identification mark is formed which can be recognized by the brightness of the surface of one ceramic layer and the other ceramic layer facing the opening. Since the discriminating body of the present invention is formed from two laminated ceramic layers, the discriminating body itself has excellent heat resistance and abrasion resistance, and at the same time the surface of one of the ceramic layers and the other facing the opening are exposed. Since the identification mark is formed by light and darkness with respect to the ceramic layer, the identification mark does not easily disappear due to abrasion.

According to a second aspect of the present invention, the laminated body is an enamel layer that covers the surface of a metal plate, the one ceramic layer is an upper glaze layer, and the other ceramic layer is a lower glaze layer. The identification body according to claim 1. Since the discriminating body of the present invention includes the metal plate, it has excellent mechanical strength against bending and the like.

The gist of the present invention as set forth in claim 3 is to locally scrape off one ceramic layer on the surface side of a laminate in which two ceramic layers having different brightness are laminated.
A feature is that an opening from the surface of one ceramic layer to the other ceramic layer is opened, and an identification mark that can be recognized by the contrast between the surface of one ceramic layer and the other ceramic layer facing the opening is obtained. And a method for manufacturing an identifier. In the manufacturing method of the present invention, an opening for forming the identification mark can be easily opened by locally scraping off one of the ceramic layers.

The gist of the present invention according to claim 4 is that the shaving is performed by a blasting process in which sand is blown toward a non-mask portion formed on a masking film for blasting covering the one ceramic layer, or The method for producing an identification body according to claim 3, wherein the removal is performed by irradiating the one ceramic layer with laser light. In the manufacturing method of the present invention, the opening for forming the identification mark can be easily opened by spraying sand using a blasting masking film or irradiating with laser light.

According to a fifth aspect of the present invention, the laminated body is an enamel layer covering the surface of a metal plate, the one ceramic layer is an upper glaze layer, and the other ceramic layer is a lower glaze layer. It is a method for producing an identifier according to claim 3 or 4.
Since the manufacturing method of the present invention is provided with the metal plate, it is possible to obtain an identifier which is excellent in mechanical strength against bending and the like.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments shown in the drawings of an identifier according to the present invention (hereinafter referred to as the "identifier of the present invention") and a method for producing the identifier (hereinafter referred to as "the present production method") It will be described based on.

(First Embodiment) FIGS. 1 to 3 show a first embodiment of an identifier of the present invention.
2 is a partial cross-sectional plan view, FIG. 2 is a cross-sectional view taken along the line EE of FIG. 1, and FIG. 3 is a cross-sectional view showing another mode of attachment.

As shown in FIGS. 1 and 2, the discriminating body 1 of the present invention according to this embodiment comprises a laminated body 4 in which two ceramic layers 2 and 3 having different lightness are laminated, and one ceramic layer 2 is formed. An identification mark 5 that can be recognized from the front surface 2a side is formed. An identification mark 5 is provided on one ceramic layer 2.
Are formed to have a depth from the surface 2a of the ceramic layer 2 to the other ceramic layer 3. The identification mark 5 can be recognized by the brightness of the surface 2a of one ceramic layer 2 and each portion 3a of the other ceramic layer 3 facing each opening 5.

The ceramic layers 2 and 3 are not only traditional ceramics such as ceramics obtained by using natural materials mainly composed of silicate minerals, but also oxide ceramics consisting of glass, cement and pure oxide. Other substances such as carbides,
Special ceramics and metal powders, which are nitride, boride, silicide, sulfide, beryllium, metal, semi-metal or intermetallic compound, respectively combined with plain or refractory oxides to obtain ceramics and metal powders. It is formed from a metal ceramic or the like obtained by sintering. The ceramic layers 2 and 3 are formed of the same quality ceramic or two different types of ceramics, and are formed to have thicknesses T1 and T2 capable of obtaining a desired strength. Further, the ceramic layer 2 has a thickness T1 (for example, T1 = 0.5 to 5.
0 mm).

Whether the ceramic layers 2 and 3 are bonded by self-adhesion by firing or drying when molding the laminate 4, or by bonding with a transparent or semitransparent inorganic adhesive layer (not shown), Alternatively, the two should be closely attached.

In order to obtain a brightness difference between the ceramic layers 2 and 3, a method of using two kinds of ceramics having different brightness and a method of using the same quality ceramics to which colorants having different brightness are added are used. There is a method. For example, when the identification mark 5 is a bar code, it is common to use white for one ceramic layer 2 and black for the other ceramic layer 3.

Each opening 6 for forming the identification mark 5 is formed in an appropriate shape according to the pattern of the identification mark 5. For example, when the identification mark 5 is a bar code pattern, it is a strip shape having an appropriate width W. Moreover, they are opened at an appropriate interval P. The identification mark 5 is not limited to the bar code pattern, and may be a pattern including a secondary code, a Carla code, a character or a number.

The discriminating body 1 of the present invention has mounting holes 7 and 7 formed on both sides of the laminated body 4, and a mounting pallet 8 for transportation by a mounting tool 8 such as a screw or a nail inserted through the mounting holes 7 and 7. It is attached to an object 9 such as a carrier for transportation or a container for transportation. As another method of attaching the discriminating body 1 of the present invention, as shown in FIG. 3, it is also possible to use the brackets 10 and 10 and the attaching tools 8 and 8 made of stainless steel or the like that are pressed against the side edge 4a of the laminated body 4. is there.

The identification mark 5 of the identification body 1 of the present invention is identified by being read by an optical reading device such as a laser scanner. Since the discriminating body 1 of the present invention is formed from two laminated ceramic layers 2 and 3, it is excellent in heat resistance, abrasion resistance and organic solvent resistance itself, and at the same time, the surface of the ceramic layer 2 is excellent. Since the identification mark 5 is formed by light and dark between the portion 2a and the portions 3a, 3a of the ceramic layer 3 facing the openings 6, 6 ..., The identification mark 5 does not easily disappear due to abrasion.

(Second Embodiment) FIGS. 4 to 5 show a second embodiment of the identifier of the present invention.
FIG. 5 is a partially sectional plan view, and FIG. 5 is a sectional view taken along the line Loro of FIG.

The identifier 11 of the present invention according to the present embodiment is
The metal plate 18 and the enamel laminate 14 covering the entire surface or a part of the metal plate 18 are provided with an identification mark 15 that can be recognized from the surface of the laminate 14. Metal plate 1
8 is made of a stainless steel plate or a carbon steel plate, and has a thickness of about 0.3 to 1.0 mm (preferably 0.5 to 0.8 mm) in terms of strength and cost. The laminated body 14 is a two-layered glaze layer having different lightness, and includes a lower glaze layer 13 bonded to the metal plate 18 and an upper glaze layer 1 forming a surface.
Consists of two. The thickness of the lower glaze layer 13 is 100 to 120 μm.
The thickness of the upper glaze layer 12 is about 100 to 150 μm.

A plurality of openings 16, 16 for forming the identification mark 15 are formed in the upper glaze layer 12 so as to have a depth from the surface 12a of the upper glaze layer 12 to the lower glaze layer 13. ing. The identification mark 15 is the surface 12 of the upper glaze layer 12.
The light a and the portions 13a of the lower glaze layer 13 that face the openings 16 can be recognized. Upper and lower glaze layer 1
In order to obtain the difference in brightness between Nos. 2 and 13, two types of glazes having different brightness after firing are applied by glaze. For example, when the identification mark 15 is a bar code, it is common to use white for the upper glaze layer 12 and black for the lower glaze layer 13.

Each opening 16 for forming the identification mark 15 is formed in an appropriate shape according to the pattern of the identification mark 15, as in the first embodiment. For example, the identification mark 15 is a bar code. In the case of, the strips are appropriately formed with a width W and are provided at appropriate intervals P. Identification mark 1
In addition to the bar code pattern, 5 may be a pattern composed of a secondary code, a Carla code, letters or numbers, and the like.

The identification body 11 of the present invention has mounting holes 1 on both sides.
7 and 17 are bored, and they are attached to an object such as a delivery pallet, a delivery pedestal or a delivery container with an attachment tool such as a screw inserted through the attachment holes 17 and 17.

The identification mark 15 of the identification body 11 of the present invention is identified by being read by an optical reading device such as a laser scanner. Since the identifier 11 of the present invention is formed from the enamel laminate 14 that covers the metal plate 18, the identifier 11 itself has excellent heat resistance, abrasion resistance, and organic solvent resistance, and the upper glaze layer 12 13a, 13a of the lower glaze layer 13 facing the front surface 12a and the openings 16, 16 ...
Since the identification mark 15 is formed by light and darkness with respect to the identification mark 5, the identification mark 5 does not easily disappear due to abrasion. Further, since the identification body 11 of the present invention is provided with the metal plate 18, it is also excellent in mechanical strength against bending and the like, and it is possible to make the enamel laminate 14 thin.

Although not shown in the drawings, the identification body 11 of the present invention has, in each opening 16, a lower glaze layer 13 facing the opening 16.
In some cases, a transparent glaze layer having a transparency that allows the color of the portion 13a to be recognized is filled to finish the surface flat and prevent dust and the like from entering the opening 16.

(Third Embodiment) FIGS. 6 and 7 show an embodiment of the manufacturing method of the present invention for manufacturing the identifying body 11 (see FIGS. 4 and 5) according to the second embodiment. Here, FIG. 6 is a cross-sectional view of a state before the blasting masking film is attached to the surface of the enamel plate, and FIG. 7 is a cross-sectional view showing a state in which an opening is being formed by the blasting process. Is.

The manufacturing of this embodiment is performed according to the following steps. In the first step, as shown in FIG. 6, an enamel plate 21 in which a metal plate 18 made of stainless steel or the like is coated with an enamel laminate 14 and a blasting masking film 22.
And the shot blasting machine 28 (see FIG. 7). The laminated body 14 of the enamel plate 21 is, as described above,
It is a two-layer glaze layer having different lightness, and is formed by a lower glaze layer 13 bonded to the metal plate 18 and an upper glaze layer 12 forming a surface. The enamel plate 31 is manufactured by a double baking method in which the lower glazed layer 13 is glazed and baked on the metal plate 18, and then the upper glazed layer 12 is glazed and baked, and the lower glazed layer 13 and the upper glaze are formed on the metal plate 18. There is a one-time baking method in which both the glaze layers 12 and 13 are baked at the same time after the layer 12 is glazed.

The blasting masking film 2
As for No. 2, the one described in JP-A-7-3842 can be used. The masking film 22 includes a sheet 23 made of polyethylene terephthalate, a masking layer 24 that is separably adhered to the sheet 23 and is made of an ultraviolet curable resin having a thickness of about 150 μm, and a masking layer 24.
It is manufactured so as to include a pressure-sensitive adhesive layer 25 applied to the adhesive layer 25 and a release sheet 26 that is detachably adhered to the pressure-sensitive adhesive layer 25. The masking layer 24 has a thin non-mask portion 24a, 24a ... Which can be removed by a blast pressure during blasting, which will be described later, and a mask portion 24b, 24b. Is formed.

In the second step, the release sheet 26 of the masking film 22 is peeled off, the masking film 22 is adhered to a predetermined position on the surface of the enamel plate 21, and then the sheet 23 is removed so that the blasting is possible. is there.

In the third step, as shown in FIG. 7, a shot blast machine 28 is used to blast the laminated body 14 of the enamel plate 21 through the masking layer 24 of the masking film 22 to identify the identification mark. To get fifteen.
The blasting is performed by jetting the blasting sand S, S ... From the shot blasting machine 28 toward the masking layer 24, so that the non-masked portions 24a, 2 of the blasting sand are thin.
.. are scraped off, and the blast sand S, S .. The blast processing is performed by removing the non-masked portion 24.
The upper glaze layer 12 of the laminated body 14 is locally shaved by the blasting sands S, S ... Which pass through the a, 24a ..., And an opening of a desired shape such as a strip shape from the surface of the upper glaze layer 12 to the lower glaze layer 13. Part 1
Continue until 6, 16 ... As an example of blasting, blasting sand S, S ... Having a particle size of 180 mesh (84 μm) is sprayed at a pressure of 3 atm for several tens of seconds.

The fourth step is to remove the masking film 22 from the enamel plate 21 after the blasting to obtain the discriminating body 11 (see FIGS. 4 and 5). The obtained identification body 11 has the surface of the upper glaze layer 12 and the openings 16, 16 ...
Identification marks 15 such as a bar code pattern that can be recognized by the darkness and darkness of the portions 13a, 13a, ... Of the lower glaze layer 13 exposed to the outside are formed.

Although not shown, the identification body 1 (see FIGS. 1 and 2) according to the first embodiment can be manufactured in the same manner as in the present embodiment. That is, after adhering the masking film 22 to the surface of the laminate 14 shown in FIG. 1, blasting is performed, and the ceramic layer 12 is locally scraped off by blasting to form the openings 6, 6.
, And then the masking film 22 is removed to obtain the identification mark 5.

(Fourth Embodiment) FIGS. 8 and 9 show another embodiment of the manufacturing method of the present invention for manufacturing the identification body 11 (see FIGS. 4 and 5) according to the second embodiment. FIG. 8 is a front view showing a state in which an enamel plate is placed on the laser beam machine, and FIG. 9 is a sectional view showing a state in which the laser beam machine is forming an opening.

The manufacture of this embodiment is performed according to the following steps. In the first step, as shown in FIG.
And the laser beam B for the enamel plate 21 which is the object to be irradiated.
That is, the laser processing machine 29 that can change the irradiation position of the laser is stored. The enamel plate 21 is manufactured and obtained in the same manner as in the third embodiment.

The laser processing machine 29 is a processing table 3 on which the enamel plate 21 is placed and which can be moved in a plane in the X-axis and Y-axis directions.
0, the irradiation position of the laser beam B on the enamel plate 21 is changed. The processing table 30 is
A driving device 31 that irradiates the laser beam B to move the plane in accordance with the position and shape of the opening 16 (see FIG. 9) opened in the enamel plate 21 and also to move the plane at a moving speed corresponding to the scraping ability of the laser beam B is provided. Provision and drive device 3
The coordinate value and the moving speed value of the plane movement are input in advance to the computer that operates 1. As the laser beam B,
Pen type marking for scanning YA
G laser is the most suitable and CO as the other one
_Two lasers can also be used.

In the second step, the enamel plate 21 is placed on the processing table 30 of the laser processing machine 29, and as shown in FIG. 9, while the processing table 30 is moved in a plane, the laser beam B is irradiated and stopped to make the enamel. The upper glaze layer 12 of the laminated body 14 of the plate 21 is locally shaved by a laser beam B to perform a removal process, and an opening 16 having a desired shape such as a strip shape from the surface of the upper glaze layer 12 to the lower glaze layer 13 is formed, 16 is to be opened. As an example of the removal processing using the laser beam B, a YAG laser device (ML-4 manufactured by Miyachi Technos Co., Ltd.) is used.
140), a laser beam B having a frequency of 2QKHz and a laser output of 50 W is used to move the processing table 30 at a moving speed of 10 mm / sec.
By reciprocating once in the longitudinal direction of the opening 16
The upper glaze layer 12 of 50 μm is scraped off. At this time, since the width of the groove that can be scraped off by reciprocating once is limited, the processing table 30 is laterally fed in a direction orthogonal to the longitudinal direction of the opening 16 according to the width dimension W of the opening 16 for removal processing. Is done.

The enamel plate 21 has all the openings 16, 16 ...
The opening of the upper glaze layer 12 and the opening 1
Parts 16a, 13a of the lower glaze layer 13 exposed at 6, 16 ...
An identification mark 15 such as a bar code pattern that can be recognized depending on the lightness and darkness is formed.

The third step is to obtain the identifier 11 (see FIGS. 4 and 5) removed from the processing table 30 of the laser processing machine 29 after the removal processing by the laser beam B is completed.

Although not shown, the identification body 1 (see FIGS. 1 and 2) according to the first embodiment can be manufactured in the same manner as in the present embodiment. That is, the laminated body 14 shown in FIG. 1 is placed on the processing table 30 of the laser processing machine 29, and the ceramic layer 2 is locally scraped off by the irradiation of the laser beam B to open the openings 6, 6 ... 1 can be obtained.

[0040]

As described in detail above, the present invention has the following excellent effects. According to the present invention as set forth in claim 1, since the discriminating body is formed by the two laminated ceramic layers and the opening formed in one of the ceramic layers, not only the heat resistance but also the abrasion resistance is achieved. An excellent identifier can be obtained.

According to the second aspect of the present invention, since the two ceramic layers are reinforced by the metal plate, it is possible to obtain an identifier having excellent mechanical strength against bending and the like.

According to the third aspect of the present invention, since the opening for forming the identification mark is opened by locally scraping off one of the two laminated ceramic layers, the heat resistance is of course required. That is, it is possible to manufacture an identifier having excellent wear resistance.

According to the fourth aspect of the present invention, the discriminating body is excellent not only in heat resistance but also in abrasion resistance by spraying sand using a blasting masking film or irradiating laser light. Can be easily manufactured.

According to the fifth aspect of the present invention, it is possible to manufacture the discriminating body in which the two ceramic layers are reinforced by the metal plate and which is excellent in mechanical strength against bending and the like.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional plan view showing a first embodiment of an identifier of the present invention.

FIG. 2 is a cross-sectional view taken along the line II in FIG.

FIG. 3 is a cross-sectional view showing another aspect of attachment in the first embodiment.

FIG. 4 is a plan view showing a second embodiment of the discriminating body of the present invention and showing a partial cross section.

FIG. 5 is a cross-sectional view taken along the line of FIG.

FIG. 6 shows an embodiment of the manufacturing method of the present invention and is a cross-sectional view of a state before a blasting masking film is attached to the surface of an enamel plate.

FIG. 7 is a cross-sectional view showing a state in which the opening is being formed by blasting in the same embodiment;

FIG. 8 shows another embodiment of the manufacturing method of the present invention, and is a front view of a state in which an enamel plate is placed on a laser beam machine.

FIG. 9 is a cross-sectional view showing a state in which the opening is being bored by the laser beam machine in the same embodiment.

[Explanation of symbols]

 2, 3 ... Ceramic layer 4 ... Laminate 5 (15) ... Identification mark 6 (16) ... Opening part 12 ... Upper glaze layer 13 ... Lower glaze layer 14 ... Enamel layer 18 ... Metal plate B ... Laser beam S ... Sand

Claims (5)

[Claims] 1. A laminate comprising two ceramic layers having different lightness laminated, wherein one ceramic layer is provided with an opening from the surface of the ceramic layer to the other ceramic layer, and one of the ceramic layers is formed. An identification body, characterized in that an identification mark is formed which can be recognized by the contrast between the surface and the other ceramic layer facing the opening. 2. The discriminating body according to claim 1, wherein the laminated body is an enamel layer that covers the surface of a metal plate, the one ceramic layer is an upper glaze layer, and the other ceramic layer is a lower glaze layer. 3. An opening extending from the surface of one ceramic layer to the other ceramic layer by locally scraping off one ceramic layer on the surface side of a laminate in which two ceramic layers having different brightness are laminated. Is provided to obtain an identification mark which can be recognized by the brightness of the surface of one ceramic layer and the other ceramic layer facing the opening. 4. The shaving is performed by blasting in which sand is blown toward an unmasked portion formed on the masking film for blasting covering the one ceramic layer, or by lasering toward the one ceramic layer. The method for producing an identification body according to claim 3, wherein the removal processing is performed by irradiating with light. 5. The identification according to claim 3, wherein the laminated body is an enamel layer that covers the surface of a metal plate, the one ceramic layer is an upper glaze layer, and the other ceramic layer is a lower glaze layer. Body manufacturing method.