WO2018168240A1

WO2018168240A1 - Metal container

Info

Publication number: WO2018168240A1
Application number: PCT/JP2018/003407
Authority: WO
Inventors: 康晴小西
Original assignee: 生野金属株式会社
Priority date: 2017-03-17
Filing date: 2018-02-01
Publication date: 2018-09-20
Also published as: JP2018154367A; CN110431086A

Abstract

[Problem] To provide a metal container with which the user thereof can achieve an increase in operation efficiency and a significant reduction in costs by simply performing printing on a pseudo-label by laser irradiation to display product information, the pseudo-label having been formed on a surface of a container body by a manufacturer thereof, and the metal container being resistant to erasure of the product information and sanitarily excellent. [Solution] A metal container comprises: a metal container body (2); and a coating film layer (3) serving as a pseudo-label obtained by applying a thin film of metal surface-adhesive paint containing a pigment printable by laser irradiation onto a surface of the container body (2). The coating film layer (3) has a thickness of 5 μm to 30 μm from the surface of the container body (2). The metal surface-adhesive paint contains the laser irradiation-printable pigment in a ratio of 5% to 40%, and also contains a white or light-colored pigment.

Description

Metal container

The present invention relates to a metal container in which a metal surface-adhesive paint is applied to the surface of a metal container body, and product information of the contents of the container body can be laser-printed on the application surface.

Conventionally, in metal containers such as Ito cans filled with food or edible oil, etc., information on the contents of the container body, for example, product name, raw material, date of manufacture, product information such as manufacturer, etc. As a method of displaying to the consumer, it is common to stick a paper label on which the product information is printed on the surface of the container body.

On the other hand, for example, a metal can is disclosed in which a label provided with a printing ink layer on a plastic film is bonded to the surface by heating and pressing. (Patent Document 1).

JP 2014-56269 A

In general, users of metal containers such as Ito cans, such as food or oil manufacturers, deliver the container body from the manufacturer of the metal container body and fill the contents. Deliver a paper label from the manufacturer and printer, and attach the paper label on which the product information of the contents is printed on the surface of the container body using a label applicator, or make the paper label before printing The label is pasted on the surface of the container body using a label sticking machine with a printing function and the product information is printed, thereby displaying the product information of the contents filled in the metal container.

Therefore, the user of the metal container orders a metal container body to be filled with the contents from the manufacturer, and in addition to the work to manage, the user separately provides a paper label for displaying product information. In addition to the manufacture of paper labels and the ordering and acceptance of orders from printing companies, work related to inventory management of the paper labels was required. In addition, after delivering these metal container body and paper label, a paper label is applied to the metal container body using a label applicator, or the label applicator with the printing function is used. In this case, it is also necessary to print product information. Therefore, the user of the metal container needs to spend a great deal of money on ordering and receiving the paper labels and managing the inventory, and in addition to the introduction cost of the labeling machine, the maintenance and electricity costs, etc. If the above labeling machine with printing function is used, there is a problem that the maintenance of ink and the like is heavy, and product information display becomes rough when printing with ink jet. It was.

In addition, the paper label is affixed to the surface of the metal container main body by a seal part on the back surface, but the paper label hits an obstacle while the container main body is being transported, or the paper label is exposed to rainwater, etc. There is also a problem that the product information on the paper label disappears and cannot be read because it may get wet and melt, or a part of the peeled paper label may be mixed into the container body as a foreign object. there were.

In addition, a user of a content item that has delivered a metal container filled with the contents from a user of the metal container may bathe the metal container that is still filled with the contents for the purpose of selling the contents. Or, when steam injection is performed, for example, a hot water bath may be used to dissolve and liquefy solid contents such as chocolate, and in that case the product information display on the paper label may disappear and become unreadable There is a problem that a part of the peeled paper label is mixed into the container body as foreign matter.

In addition, as a method of displaying product information on the surface of a metal container body, the surface of the container body may be engraved by laser marking, and the product information of the contents may be engraved, but the surface of the container body is shaved. There is a risk that the scraps will be mixed into the inside of the container body, and the engraved part will be rusted, rust may be mixed into the container body, and it may be difficult to read the product information display. It was. *

In the technique described in Patent Document 1, a plastic film is bonded to the surface of a metal container. However, as with the paper label, printing on the label, bonding to the metal container, and management work are required. In addition, since the cost is high, it is not possible to contribute to work efficiency and cost reduction. Further, the adhered label may be peeled off from the metal container.

In this way, in particular, in a metal container such as a funnel can filled with food or edible oil, the paper label is peeled off during filling of the contents, or the surface of the metal container body is imprinted. In many cases, foreign matter may be mixed in the inside of the container body, such as scraping, and as a method for displaying product information on the container body, it has become a big problem in terms of hygiene.

Accordingly, the present invention forms a pseudo label on the surface of the container body on the metal container body manufacturer side, and the user of the metal container prints the pseudo label on the pseudo label by laser irradiation. By only displaying information, it is possible to improve the efficiency and drastically reduce costs on the user side, and provide a metal container with excellent hygiene that does not erase product information. The task was to do.

In order to solve the above problems, the present invention is configured as follows. That is, the metal container according to claim 1 of the present invention is a metal container body and a metal surface-adhesive paint containing a pigment printable by laser irradiation is applied to the surface of the container body in a thin film shape. It is characterized by comprising a coating film layer as a pseudo label.

The metal container according to claim 2 is characterized in that, in the metal container, the thickness of the coating layer from the surface of the container body is 5 μm to 30 μm.

The metal container according to claim 3 is characterized in that, in the metal container, the metal surface-adhesive paint contains a pigment that can be printed by laser irradiation in a proportion of 5% to 40%. .

The metal container according to claim 4 is characterized in that, in the metal container, the metal surface adhesion paint contains a white or light color pigment.

In addition, the metal container manufacturing apparatus according to claim 5 includes: a molding unit that molds a metal container body from a thin steel plate; and a metal surface-adhesive paint containing a pigment that can be printed by laser irradiation after the molding. A coating means for applying a thin film on the surface of the container body by silk screen printing, and a drying means for drying the coated thin film layer to form a pseudo label. Yes.

Moreover, the manufacturing method of the metal container which printed the merchandise information of Claim 6 can be printed by the process of shape | molding a metal container main body from a thin steel plate, and laser irradiation in the manufacturer of a metal container main body A step of applying a metallic adhesive paint containing a pigment to the surface of the container body after molding in a thin film by silk screen printing, and drying the applied metallic adhesive paint at a predetermined temperature and time. And a step of laser-printing the product information of the contents on the surface of the coating layer used as the pseudo label in the user of the metal container body. It is characterized by that.

According to the metal container of the first aspect of the present invention, the coating layer formed by applying a laser-printable metal surface-adhesive paint in a thin film is used as a pseudo label, so that the user of the metal container On the other hand, it is sufficient to display product information by laser printing on the surface of the coating layer using a laser printing device such as a laser marker machine having higher printing accuracy than the ink jet printing. It is possible to greatly reduce the work and cost related to ordering, acceptance and inventory management, as well as the introduction and operation costs related to the labeling machine. In addition, since the coating layer coated with the metal surface-adhesive paint is not easily peeled off, the printed product information display does not disappear easily, and foreign matter can be prevented from entering the container body. In particular, it is excellent in terms of hygiene as a metal container filled with food or cooking oil.

Moreover, according to the metal container of Claim 2, by setting it as the said range of the thickness of a coating-film layer, the visibility at the time of printing by laser irradiation to the surface of a coating-film layer improves. That is, metal containers such as Ito cans generally have a metallic luster on the surface, and when product information is displayed directly on the metal surface by laser printing, the contrast with the metallic luster is weak and visibility is low. Although it deteriorates, the visibility of the product information laser-printed can be ensured by forming the coating film layer with a thickness in the above range, and the coating film layer can function as a pseudo label.

Moreover, according to the metal container of Claim 3, it is set as the said range of the thickness of a coating-film layer by making the metal adhesive coating material contain the pigment which can be printed by laser irradiation in the ratio of the said range. In addition, the pigment that can be printed by laser irradiation is included in the metal adhesive paint in the proportion of the above range, so that the contrast against the metallic luster on the surface of the metal container is strengthened and the product information is fully visible. Product information can be printed with possible darkness, and the coating layer can be made to function more as a pseudo label.

Moreover, according to the metal container of Claim 4, in addition to the pigment which can be printed by laser irradiation, by adding a white or light color pigment to the metal surface adhesive paint, Visibility of product information when printing by black change by laser irradiation can be ensured, and the coating layer can function as a pseudo label with sufficiently strong contrast against the metallic luster on the surface of the metal container Can do.

Here, since the thickness of the coating layer of the metal container according to any one of claims 2 to 4 is excessively thin, the surface of the container body with a metallic gloss on the back surface can be seen through. The contrast becomes weaker, and the absolute amount of pigment that can be printed by laser irradiation on the laser irradiation surface of the coating layer decreases according to the thinness of the coating layer. On the other hand, if the thickness is excessively increased, the amount of the metal surface-adhesive paint used in the coating layer increases, and the cost burden increases because drying takes time. From the viewpoint of visibility of product information and cost, the coating layer can be appropriately functioned as a pseudo label.

In addition, according to the metal container manufacturing apparatus of the fifth aspect, the coating layer can be appropriately formed on the surface of the container body after the molding by silk screen printing. That is, a metal container filled with food or edible oil, etc., is usually in a state of being stacked at the time of storage if it is a thin steel plate before forming the container body, and a coating layer is formed on the surface of the thin steel plate as it is. When stacked, the metal surface-adhesive paint adheres to the inner surface of the container body, which is not preferable from the viewpoint of food hygiene. Therefore, it is important that the coating layer is formed on the outer surface of the container body after molding. At this time, according to the silk screen printing, the thickness of the coating layer can be adjusted depending on the roughness of the screen plate, and the screen plate is curved by pressing the squeegee. Alternatively, even if irregularities are formed on the surface of the container body, the coating layer can be formed by bringing the screen plate and the surface of the container body into close contact with each other.

Furthermore, according to the method for manufacturing a metal container printed with product information according to claim 6, product information can be printed by irradiating the surface of the coating layer with a laser on the user side of the metal container. , Related to paper label ordering, inspection and inventory management and cost burden, as with conventional paper labels, and labeling or printing work with a labeling machine or a labeling machine with a printing function and its maintenance The work efficiency and the cost burden can be reduced without imposing a burden on work and running costs. In addition, the user does not worry that the product information display disappears because the coating layer is easily peeled off or melted like a paper label, and a part of the paper label that has been peeled off is a foreign object. As a result, the contents can be filled, stored and sold in a metal container without sanitizing and without being mixed into the container body.

It is a perspective view which shows the structure of the metal containers based on this invention. It is sectional drawing which shows the structure of metal containers. It is a block diagram which shows the manufacturing apparatus of metal containers. It is the schematic which shows the state which apply | coats a coating-film layer. It is a flowchart figure which shows the manufacturing method of the metal container which printed merchandise information. It is a flowchart figure in the user of the contents.

Hereinafter, the present invention will be specifically described with reference to the drawings. First, FIG. 1 is a perspective view showing a structure of a metal container 1 according to the present invention. In the present embodiment, a description will be given using a canister as the container body 2 of the metal container 1.

The metal container 1 is composed of a metal container body 2 and a coating layer 3 that applies a metal surface adhesion paint to the surface of the container body 2 to form a pseudo label. In order to facilitate the understanding of the illustration, the product information of the contents to be laser-printed on the user side of the metal container 1 is usually displayed on the surface of the coating layer 3 in the figure.

The metal container body 2 is formed by bending a thin steel plate to form a rectangular cylindrical body 2a, and fixing a bottom plate 2b below the top plate 2c. The top plate 2c is provided with a lid portion 2d in which a lid is attached to the through hole. The metal container body 2 is not limited to a canister, but includes other metal containers such as metal cans. The whole body is not limited to metal, but only the surface of the container body 2 or the body portion 2a in which the top plate 2c is made of synthetic resin and on which the coating layer 3 is formed is made of metal. The container body 2 including a part of the container body 2 such as a container body 2 made of metal is also included (the same applies hereinafter).

The coating layer 3 is a range in which a metal surface-adhesive paint containing a laser-printable pigment in a predetermined ratio is displayed on the surface of the body 2a with a predetermined thickness, and product information of contents is displayed. After being applied as appropriate, it is dried to form a pseudo label on the surface of the body 2a.

In the present embodiment, the pigment that can be printed by laser irradiation contained in the metal surface adhesion paint is considered to be metal surface adhesion in consideration of the darkness of the print that ensures the visibility of product information and the adhesion to the metal surface. It is contained in the paint at a ratio of 20%. From the viewpoint of visibility and adhesion to a metal surface, the content of the pigment that can be printed by the laser irradiation is preferably 5% to 40%, and most preferably 15% to 20%. It is good to contain.

Also, the coating layer 3 is formed with a thickness of 10 μm from the surface of the body portion 2a from the viewpoint of enhancing the contrast with the surface of the body portion 2a that has a metallic luster and improving the visibility. Yes. That is, if the coating layer 3 is formed too thin, the back surface of the body 2a with metallic luster is visible, so that the contrast with the product information displayed in black by laser printing is weakened. Since the absolute amount of pigment that can be printed by laser irradiation on the laser irradiation surface of the coating layer 3 is also reduced, the laser printing becomes thin and the visibility deteriorates. On the other hand, if it is formed too thick, Since the amount of the metal surface adhesive coating used increases and time is required for drying, the cost burden increases. From such a viewpoint, the thickness of the coating layer 3 is preferably formed in the range of 5 μm to 30 μm, and most preferably in the range of 8 μm to 13 μm.

Thus, the thickness of the coating layer 3 and the content ratio of the pigment that can be printed by laser irradiation are within the above ranges in consideration of the improvement of the visibility with respect to the metal surface that is metallic gloss, the adhesion to the metal surface, and the cost burden. It is good to do, and it can be made to function as a pseudo label which displays the merchandise information of the contents in metal container 1 by forming coat layer 3 in the range.

In general, since a paper label attached to a metal container such as a conventional canister is white and product information is printed with black letters on the surface thereof, the coating layer of the present invention Similarly, by forming the product information 3 in white or light color and printing the product information in black, the user of a conventional metal container can visually recognize the product information displayed on the pseudo label without a sense of incongruity. Furthermore, by changing the black color using a CO2 laser as a laser printing device, product information can be printed basically at a lower cost than various laser printing devices. Therefore, the coating layer 3 as the pseudo level is formed in white or light color by containing a white or light color pigment in addition to a pigment that can be printed by laser irradiation on the metal surface adhesive paint, and By printing the product information by changing the surface of the coating layer 3 to black by CO2 laser printing, it is possible to contribute to the visibility of the product information and the cost reduction of the printing. Moreover, the novelty and cleanliness of the contents can be felt by forming the coating layer 3 as a pseudo label in pure white.

The metal container 1 formed as described above can be easily displayed on the surface of the coating film layer 3 on the surface of the coating layer 3 on the user side of the food or oil manufacturer who delivered the metal container 1. Printing by laser irradiation with high printing accuracy can be performed. The information displayed by the laser printing includes, for example, product name, product number, contents, raw materials, date of manufacture, expiry date, manufacturer information, etc., as well as two-dimensional code for access via the Internet. And graphic information such as logo marks and characters used by users.

This can greatly reduce the work and cost burden of conventional paper label ordering, acceptance and inventory management, etc. Can be prevented and foreign matter can be prevented from entering the inside of the container body 2, and the user of the metal container 1 can fill, store and sell the contents in the metal container 1 with peace of mind. be able to.

In this embodiment, since the product information is displayed by changing the surface of the coating film layer 3 to black by printing by laser irradiation, white or light color pigment in addition to the pigment that can be printed on the metal surface adhesive paint by laser irradiation. However, when color printing is performed in a color other than black by laser irradiation, the pigment is not limited to white or light color, and a black or dark pigment may be included in the metal surface adhesive paint. However, as described above, in general, most of conventional product information has a white paper label printed with black, and a CO2 laser is used on the surface of the white or light-colored coating layer 3. Since the black printing is basically low in cost, in order to make the coating layer 3 function as a more pseudo label, a white or light-colored pigment is contained in the metal surface adhesive coating, and the coating layer 3 Is preferably formed in white or light color.

In this embodiment, the coating layer 3 is provided on the body 2a as the surface of the container body 2 and product information is printed on the surface. However, if the surface of the container body 2 is used, the body 2a and the bottom plate 2b are used. Alternatively, the coating layer 3 may be provided on either the bottom plate 2c or the lid 2d or a plurality of metal surfaces, and product information may be printed by laser irradiation.

Next, a manufacturing apparatus 10 for manufacturing the metal container 1 will be described. FIG. 3 is a configuration diagram showing the manufacturing apparatus 10. The apparatus 10 for manufacturing a metal container 1 basically includes a forming means 11 for forming a metal container body 2 from a thin steel plate, and a metal surface adhesive paint containing a pigment printable by laser irradiation. The coating means 12 for applying a thin film on the surface of 2 by silk screen printing, and the drying means 13 for drying the applied thin film-like coating layer to form a pseudo label, each of these components Are connected by a belt conveyor. In this case, the manufacturing apparatus 10 will be described using a one-pipe can as the metal container 1.

Although not specifically illustrated, the forming means 11 is a forming machine for forming a metal container body 2, which forms a square cylindrical body 2 a by bending a thin steel plate, and has a bottom plate below it. The container body 2 is formed by winding and fixing 2b and fixing the top plate 2c by winding it. The top plate 2c is provided with a lid portion 2d that covers a through hole for pouring and discharging food or edible oil. In the present embodiment, the forming means 11 is a one-piece can forming machine. However, the forming means 11 is not limited to this, and any other forming means 11 may be used as long as it can form the metal container body 2. May be.

As shown in the schematic diagram of FIG. 4, the application means 12 is a silk screen printer for applying the metal surface-adhesive paint to the surface of the body 2 a of the container body 2 to form the coating layer 3. The screen plate 12c composed of the screen portion 12a and the frame portion 12b, and a squeegee that moves to the left and right in the drawing while pressing the upper surface of the screen portion 12a and applies the ink I of the metal surface adhesion paint on the upper surface to the printing target. 12d and ink return 12e.

As shown in the drawing, the container main body 2 conveyed from the forming means 11 by the belt conveyor is in a state of being laid down above the surface of the body portion 2a, and is successively conveyed below the applying means 12 to be applied. 12, after coating layer 3 is applied, it is transported to drying means 14. Specifically, the coating means 12 moves the ink I placed on the upper surface of the screen portion 12a of the screen plate 12c in the right direction in the drawing by the movement of the squeegee 12d, while lowering the screen portion 12a and the container body 2 below. By pressing the surface of the body part 2a, the ink I is extruded and applied to the surface of the body part 2a. At this time, since the screen portion 12a is curved by the pressing of the squeegee 12d, the screen portion is not affected by the deflection of the surface of the body portion 2a of the container body 2 or even if the surface of the body portion 2a is uneven. 12a and the surface of the trunk | drum 2a can be stuck, and the coating-film layer 3 can be formed. Moreover, the thickness of the coating film layer 3 can be adjusted with the coarseness of the screen part 12a.

Furthermore, if the ink I is applied to the surface of the body 2a with the container body 2 upright, the ink I may sag, but as described above, the surface of the body 2a with the container body 2 laid down. Can be prevented from dripping, and the coating layer 3 can be appropriately applied in a desired thickness and range.

When the ink I is applied to the surface of the body 2a of the container body 2 in this way, the squeegee 12d and the ink return 12e return to the initial positions in the left direction in the figure, and the ink return 12e moves accordingly to the right side in the figure. If it moves to the left direction in the figure and the next container main body 2 is conveyed under the application means 12, the coating-film layer 3 will be apply | coated to the surface of the trunk | drum 2a as above-mentioned.

Although not specifically illustrated, the drying means 13 is a drying furnace, and passes through the drying furnace while moving the surface of the body 2a of the container body 2 on which the ink I is applied on the belt conveyor. And dry. The drying oven dries at a predetermined temperature and time interval according to the thickness of the coating layer 3 of the ink I. Therefore, what is necessary is just to change temperature and time interval suitably according to the thickness of the said coating-film layer 3. FIG.

Thus, according to the manufacturing apparatus 10 for the metal container 1, the container body 2 after molding is formed so that the ink I does not adhere to the inner surface of the container body 2 by applying the coating means 12 to silk screen printing. In contrast, the coating layer 3 can be formed as a pseudo label in a sanitary and appropriate manner.

Next, a method for manufacturing the metal container 1 on which product information is printed will be described. FIG. 5 is a flowchart showing a method for manufacturing the metal container 1.

<Molding step (S1)>
First, the manufacturer of the metal container 1 forms the metal container body 2 from a thin steel plate. Specifically, a metal thin steel plate is bent to form a body portion 2a of the container body 2, a bottom plate 2b is fixed below the top plate 2c, and a top plate 2c formed with a lid portion 2d is fixed thereto. Then, the metal container body 2 is formed.

<Application step (S2)>
Next, in the manufacturer, a metal surface-adhesive paint containing a pigment that can be printed by laser irradiation and, if necessary, a white or light-colored pigment is applied to the surface of the body portion 2a of the container body 2 with silk. It is applied in a thin film by screen printing. The coating layer 3 applied in the form of a thin film is formed with a thickness in the above-mentioned range from the surface of the body portion 2a, and a pigment that can be printed by laser irradiation in the metal surface-adhesive paint at a ratio in the above-mentioned range. Contained.

<Drying step (S3)>
Next, in the manufacturer, the coating layer 3 applied in the application step is dried in a drying furnace at a predetermined temperature and time interval. The temperature and time interval can be appropriately changed according to the thickness of the coating film layer 3.

The metal container 1 manufactured in this way is delivered from the manufacturer to the user by placing an order from the user of the metal container 1.

<Printing step (S4)>
And in the said user, the merchandise information of the content is printed on the surface of the said coating-film layer 3 by irradiation of CO2 laser. The laser is not limited to a CO2 laser, and may be any other laser printing device as long as printing by laser irradiation is possible on the surface of the coating layer 3. In addition, the output of the laser depends on the amount of pigment that can be printed by laser irradiation contained in the metal surface-adhesive paint, and if the proportion of the pigment is small, the output is darkened with high output, or if the proportion is large. The density of printing can be changed as appropriate depending on the level of output, such as thinning printing with low output.

On the user side, before the printing step (S4), the container body 2 may be filled with contents such as food or cooking oil, and after the product information is printed on the surface of the coating layer 3, the container The main body 2 may be filled with food, edible oil, or the like, and may be appropriately selected on the user side.

FIG. 6 is a flowchart showing a flow in which, on the user side, the metal container 1 is filled with contents after the printing step (S4) shown in FIG. 5 and the metal container 1 is delivered to the user of the contents. FIG. The user of the contents who delivered the metal container 1 filled with the contents from the user of the metal container 1 may inject the metal container 1 with hot water or steam for the purpose of using the contents. . For example, when the content of the metal container 1 is solid chocolate, the user uses the content such as producing chocolate confectionery using the chocolate or providing it to general consumers. In order to do this, the solid chocolate is melted in a hot water bath or the like, and then the lid 2d of the metal container 1 is opened to use or provide the content chocolate. Thus, even if the user of the contents is a case where the metal container 1 is bathed or the like, the coating layer 3 is not easily melted and peeled off like a conventional paper label and functions as a pseudo label. Therefore, there is no concern about the disappearance of the product information display, and the paper label is not peeled off and part of it is not mixed into the contents as a foreign object. It is possible to use the contents of the metal container 1 in mind.

In this way, on the user side of the metal container 1, product information can be printed by irradiating the surface of the coating layer 3 with a laser, which is more efficient and cost-effective than conventional paper labeling. Can be realized. Specifically, on the user side, it is sufficient to perform printing by laser irradiation with relatively simple and high printing accuracy and simple maintenance of the laser printing apparatus. It is possible to realize a significant reduction in the cost burden, and the burden on the labeling machine or the labeling machine with a printing function, the work related to the maintenance, and the running cost.

In addition, since the coating layer 3 is not easily peeled off like a paper label or film, or does not dissolve in water, the product information displayed on the surface of the coating layer 3 disappears. The user can use the metal container 1 and the user of the contents in the metal container 1 with a sense of hygiene and safety. Can be filled, stored, sold and used.

In the metal container 1 of the above-described embodiment, the explanation has been made by using the Ito can. However, any other metal container that can display the product information of the contents can be used.

DESCRIPTION OF SYMBOLS 1 Metal container 2 Container body

2a Body part

2b Bottom plate

2c Top plate

2d Cover part 3 Coating layer 10 Manufacturing apparatus 11 Forming means 12 Application means 12a Screen part

12b Frame part

12c Screen plate 12d Squeegee 12e Ink returning 13 Drying means I Ink (Metal surface adhesion paint)

Claims

It consists of a metal container body and a coating film layer that is applied as a thin film by applying a metal surface-adhesive paint containing a pigment printable by laser irradiation onto the surface of the container body. Metal container.
2. The metal container according to claim 1, wherein the thickness of the coating layer from the surface of the container body is 5 μm to 30 μm.
The metal container according to claim 1 or 2, wherein the metal surface-adhesive paint contains a pigment that can be printed by laser irradiation in a proportion of 5% to 40%.
The metal container according to any one of claims 1 to 3, wherein the metal surface adhesion paint contains a white or light pigment.
Forming means for forming a metal container body from a thin steel plate and a metal surface-adhesive paint containing a pigment that can be printed by laser irradiation are applied to the surface of the formed container body in a thin film by silk screen printing. An apparatus for producing a metal container, comprising: a coating unit; and a drying unit that dries the coated thin film layer to form a pseudo label.
In the metal container manufacturer, forming a metal container body from a thin steel plate,
Applying a metal adhesive paint containing a pigment printable by laser irradiation to the surface of the container body after molding in a thin film by silk screen printing;
Drying the applied metal adhesive paint at a predetermined temperature and time to make the coating layer a pseudo label;
In the metal container user, the step of laser printing the product information of the contents on the surface of the coating layer as the pseudo label, the metal container of the product information printed Production method.