JP2020015257A - Label production method and label - Google Patents

Abstract

To enable producing a label displaying two or more colors at a lower cost than a conventional method.SOLUTION: A label production method of this invention includes: a first step of forming a solid color label 104 by a printer that overlaps two or more color coatings 102 on a surface of a base material 101; and a second step of exposing a lower coating to outside by a laser beam machine that partially irradiates a surface of the solid color label 104 with laser according to processing data to peel an upper coating.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a label manufacturing method for manufacturing a label for displaying in two or more colors, and the label.

  2. Description of the Related Art Conventionally, in a device such as a limit switch, a label (product label) indicating the specification of the device is attached (for example, see Patent Document 1). In addition, in a device such as an explosion-proof device that has a standard certification, a label (mark label) displaying a mark indicating the standard certification is attached in addition to the product label. The mark label shows the date of passing the certification, the pass number, and the manufacturer. In the mark label, yellow and black are designated as colors used for the mark.

  These labels are manufactured by producing a composition in advance and performing offset printing or the like using the composition. In general, mark labels are manufactured separately from product labels.

Japanese Utility Model Publication No. 51-128260

On the other hand, the display contents (such as the pass number) of the mark label are different for each device. Therefore, when producing this mark label, it is necessary to produce a composition for each display content. Therefore, the cost of label production is high.
Further, the display contents of the mark label are changed due to the update of the certification or the raising of the standard. For example, the mark label of the explosion-proof equipment has a validity period of three years, and after the certification is updated, the date when the certification is passed is changed to the date when the certification is updated. In this case, it is necessary to discard the old mark label that has already been manufactured, to manufacture a new composition, and to manufacture a new mark label using the new composition. Thus, wasteful costs are incurred in label production.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to provide a label manufacturing method capable of manufacturing a label displaying two or more colors at a lower cost than a conventional method. .

  In the label manufacturing method according to the present invention, the printing machine overlays two or more colors of paint on the surface of the base material to create a plain label, and the laser processing machine applies the processing to the surface of the plain label in accordance with the processing data. A second step of partially irradiating the laser to peel off the upper layer paint and exposing the lower layer paint to the outside.

  According to the present invention, since it is configured as described above, it is possible to manufacture a label for displaying in two or more colors at a lower cost than the conventional method.

FIG. 2 is a top view illustrating a configuration example of the label according to the first embodiment of the present invention. FIG. 2 is a side view showing a configuration example of the label according to Embodiment 1 of the present invention. 4 is a flowchart illustrating an example of a label manufacturing method according to Embodiment 1 of the present invention. FIG. 3 is a top view illustrating a configuration example of a plain label created by the label manufacturing method according to the first embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
1 and 2 are diagrams showing a configuration example of a label 1 according to Embodiment 1 of the present invention. Note that the label 1 shown in FIG. 2 is exaggerated in order to make the later-described paint 102 easy to see.
The label 1 is a member for displaying in two or more colors, and is attached to a device. Hereinafter, an example will be described in which the label 1 is a label in which the mark label 1b is inserted into the product label 1a and is a label attached to an explosion-proof device. In the mark label 1b, yellow and black are designated as colors used for the mark.

  This label 1 has a substrate 101 as shown in FIGS. The substrate 101 is desirably made of SUS (stainless steel) having good weather resistance. On the surface of the substrate 101, paints 102 of two or more colors (black paint 102a and yellow paint 102b in FIGS. 1 and 2) are overlaid by printing. In FIGS. 1 and 2, the transparent paint 103 is overlapped between the lower paint to be exposed and the upper paint to be peeled. In addition, the paint 102 in the upper layer (black paint 102a in FIGS. 1 and 2) is partially peeled off by laser irradiation, so that the paint in the lower layer (yellow paint 102b in FIGS. 1 and 2) is removed. It is exposed to the outside. The upper layer paint (black paint 102a in FIGS. 1 and 2) and the lower layer paint exposed to the outside display. As shown in FIG. 1, the mark label 1b displays, in order from the top, the date of passing the certification, the pass number, and the manufacturer. In FIG. 1, illustration of the specifications displayed on the product label 1a is omitted.

Next, a method of manufacturing the label 1 according to the first embodiment will be described with reference to FIG.
In the method of manufacturing the label 1, as shown in FIG. 3, first, the surface of the substrate 101 is polished and degreased (step ST1). By this polishing and degreasing, the adhesion of the paint 102 to the surface of the substrate 101 is improved. Note that polishing and degreasing are not indispensable processes in the method of manufacturing the label 1.

  Next, the printing machine overlays the paint 102 of two or more colors on the surface of the substrate 101 to create a plain label 104 (step ST2). At this time, the yellow paint 102b to be exposed and the black paint 102a to be peeled are layered on the surface of the substrate 101 by printing in this order. Also, at this time, it is desirable to overlay the transparent paint 103 between the yellow paint 102b to be exposed and the black paint 102a to be peeled by printing. It is desirable to use a printing machine that performs silk printing with good weather resistance. FIG. 4 shows an example of the plain label 104.

It is desirable that the yellow paint 102b to be exposed has a thickness of 15 to 20 μm or more in order to prevent peeling due to heat generated by laser irradiation. For example, the thickness is adjusted to 15 to 20 μm or more by printing (including baking) the yellow paint 102b about three times by silk printing.
The black paint 102a to be peeled is desirably as thin as possible (5 μm or more and less than 15 μm) in order to facilitate the peeling by laser irradiation. For example, the thickness is reduced to about 8 to 10 μm by printing the black paint 102a once by silk printing.

Next, the laser processing machine partially irradiates the laser to the surface of the plain label 104 according to the processing data to peel off the upper layer paint and expose the lower layer paint to the outside (step ST3). That is, the black paint 102a to be peeled is partially irradiated with laser to be peeled, thereby exposing the yellow paint 102b to be exposed to the outside. Then, a mark is displayed by the black paint 102a and the yellow paint 102b exposed to the outside (see FIG. 1).
The processing data is data for peeling off the upper layer paint to be peeled by the laser processing machine, and is created in advance and held in the laser processing machine. The laser processing machine controls the laser irradiation position, the laser irradiation power, and the laser irradiation time in accordance with the processing data, thereby stripping the upper layer paint. The laser used by the laser beam machine is desirably a YAG laser.

  As described above, in the label manufacturing method according to the first embodiment, the plain label 104 is created by overlaying two or more colors of the paint 102 on the base 101 by printing, and irradiating the laser to the plain label 104. The paint of the display color is exposed to the outside with. Accordingly, the label manufacturing method according to the first embodiment can manufacture the label 1 at a lower cost than the conventional method.

  Further, in the label manufacturing method according to the first embodiment, even if the label 1 whose display content is changed due to the update of the certification or the raising of the standard, the content of the processing data held by the laser processing machine is changed. The label 1 with new display contents can be manufactured easily and at low cost compared to the conventional method. That is, unlike the related art, it is not necessary to manufacture a copy every time the display content is changed, and the disposal of the old label 1 can be suppressed. Therefore, the cost of producing a new printing plate and the cost of discarding the old label 1 can be reduced, and wasteful costs in label production can be reduced, and the production cost is reduced to about half that of the conventional method.

Conventionally, there are a plurality of label manufacturing methods other than the method using offset printing.
For example, there is a method in which an anodic oxidation treatment is performed on an aluminum base to form an oxide film of a specific color, and the oxide film is irradiated with a laser to cut the oxide film. In this method, color separation is difficult. However, in this method, it is difficult to display two or more colors on one label because the cost is increased due to the necessity of a mask or the like. Further, in this method, fading easily occurs.

  In addition, there is a method in which an SUS substrate is subjected to an etching treatment and a paint is poured. In this method, the label can be used semipermanently without peeling and fading of the paint. However, the etching process is expensive, and is not suitable for mass production, but for production of one product and one product.

  Further, there is a method of performing display on a SUS substrate by silk printing. Since this method is inexpensive and has good weather resistance, it is suitable for mass production. However, in this method, multi-color printing is possible, but a copy of one article is required. Therefore, in this method, it is necessary to produce a block every time the display content is changed, which increases the cost.

As described above, in the above-described conventional label manufacturing method, the cost is increased for the label 1 which needs to be displayed in two or more colors and the display content is sometimes changed.
On the other hand, in the first embodiment, by changing the content of the processing data held by the laser processing machine, the label 1 needs to be displayed in two or more colors and the display content may be changed. However, the label 1 can be easily and inexpensively manufactured.

In addition, when the paint 102 of two or more colors is simply printed on the substrate 101 and the paint of the upper layer is peeled off by the laser, the paint of the lower layer in the processed portion may be peeled off by the heat generated by the laser irradiation.
Therefore, in the label manufacturing method according to the first embodiment, the surface of the substrate 101 is polished and degreased, and then the lower layer paint to be exposed is printed thicker, and the upper layer paint to be peeled is printed thinner. I have. Accordingly, it is possible to prevent the paint of the lower layer in the processed portion from being peeled off by the heat generated by the laser irradiation.

  Further, in the label manufacturing method according to the first embodiment, the transparent paint 103 is inserted between the lower layer paint to be exposed and the upper layer paint to be peeled to prevent peeling of the lower layer paint. ing. That is, the laser beam passes through the transparent paint 103, and the transparent paint 103 plays a role of protecting the lower paint immediately below.

Also, after updating the test, the mark label 1b becomes incompatible unless a new display content is used. On the other hand, in the related art, the switching of the display content is managed by a person, so that it is easy to forget to switch.
On the other hand, in the label manufacturing method according to the first embodiment, the label 1 is manufactured using a laser processing machine. Therefore, the use-by date of the processing data may be set to the renewal month of the verification by using the calendar function normally provided in the laser processing machine. Accordingly, the laser processing machine cannot use the processing data after the expiration date, so that it is possible to prevent forgetting to switch the display contents of the mark label 1b.

Further, in the related art, since the manufacture of the mark label 1b is managed by a person, it is easy to cause a mistake in attaching the mark label 1b and forget to attach the mark label 1b.
Therefore, in the label manufacturing method according to Embodiment 1, the laser processing machine may hold the processing data in association with the identification information for identifying the device. This allows the laser processing machine to read the processing data corresponding to the identification information specified by the user and manufacture the laser according to the processing data when manufacturing the label. Therefore, since the mark label 1b other than the mark label 1b corresponding to the device designated by the user is not manufactured, it is possible to prevent the mark label 1b from being mistakenly attached and forgetting to attach the mark label 1b.

  In the above description, the case where the label 1 is a label in which the mark label 1b is inserted into the product label 1a is shown. However, the present invention is not limited to this, and the label 1 may be a label that displays in two or more colors, and may be a single mark label 1b or another label.

In the above description, the label manufacturing method in the case where the label 1 performs display in two colors has been described as a specific example. On the other hand, the same applies to the case where the label 1 is displayed in three or more colors. Note that, even when the paint 102 has three or more layers, the laser processing machine can control the paint 102 to be peeled off by the laser irradiation power and the laser irradiation time.
Also. When the paint 102 has three or more layers, a transparent paint 103 may be overlapped on the upper surface of a plurality of paints to be exposed. When the paint under the transparent paint 103 is peeled, the laser processing machine can peel the paint by controlling the laser irradiation power and the laser irradiation time.

  As described above, according to the first embodiment, in the label manufacturing method, the printing machine superimposes two or more colors of the paint 102 on the surface of the base material 101 to create the plain label 104; A second step in which the laser processing machine partially irradiates the surface of the plain label 104 with laser according to the processing data to peel off the upper layer paint and expose the lower layer paint to the outside. As a result, the label manufacturing method according to the first embodiment can manufacture the label 1 displaying two or more colors at a lower cost than the conventional method.

  In the present invention, it is possible to modify any components of the embodiment or omit any components of the embodiment within the scope of the invention.

1 label 1a product label 1b mark label 101 base 102 paint 102a black paint 102b yellow paint 103 transparent paint 104 plain label

Claims (11)

A first step in which a printing press overlays two or more colors of paint on the surface of the substrate to create a plain label;
A laser processing machine that partially irradiates a laser to the surface of the plain label in accordance with the processing data to peel off the upper layer paint and expose the lower layer paint to the outside. The label manufacturing method according to claim 1, further comprising a 0th step of performing polishing and degreasing on the surface of the substrate before the processing of the first step. The label manufacturing method according to claim 1, wherein in the first step, the thickness of the lower layer paint to be exposed is set to 15 to 20 μm or more. The label manufacturing method according to any one of claims 1 to 3, wherein in the first step, the thickness of the upper layer paint to be peeled is set to 5 µm or more and less than 15 µm. 5. The method according to claim 1, wherein, in the first step, a transparent color paint is overlapped between the lower paint to be exposed and the upper paint to be stripped. 6. The label manufacturing method described in the section. The label printing method according to any one of claims 1 to 5, wherein the printing machine performs silk printing. The label manufacturing method according to any one of claims 1 to 6, wherein a laser used by the laser processing machine is a YAG laser. The method according to claim 1, wherein the base is made of stainless steel. The label manufacturing method according to any one of claims 1 to 8, wherein the laser processing machine has a calendar function, and a use period of the processing data is set. The laser processing apparatus according to claim 1, wherein the laser processing machine holds the processing data in association with identification information for identifying the device, reads processing data corresponding to identification information specified by a user, and performs processing. The label manufacturing method according to claim 9. Foundation and
A paint which is overlapped with two or more colors by printing on the surface of the substrate,
The label, wherein the paint of the upper layer is partially peeled off by laser irradiation, and the paint of the lower layer is exposed to the outside.

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