JP2000351176A - Manufacturing method of decorative metal plate - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To make a decorative metal plate in which a picture pattern and a concavo-convex pattern are perfectly synchronized. SOLUTION: It is manufactured in the following steps (a) to (c).
(A) a preparation step of preparing a laminate 3 of a metal substrate 1 and a resin layer 2; (b) a metal embossing plate cylinder 21 and an embossing impression cylinder whose surface irregularities are in a male-female relation with each other. 22
An embossing step of pressing the laminate to form the concavo-convex pattern 4 reaching the metal substrate; (c) a printing plate cylinder 23 having the same surface concavo-convex pattern and diameter as the embossing plate cylinder and the embossing impression cylinder; The shaped laminate is inserted between the printing impression cylinder 24 and pressed, and the ink 5 is applied only to the projections 4e of the uneven pattern in advance.
A printing process in which the ink 5 is transferred to the concave portions of the resin layer of the laminate by the printing impression cylinder having the ink adhered thereto, and the pattern is printed in synchronism with the uneven pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for manufacturing a decorative metal sheet. In particular, the present invention relates to a method for manufacturing a decorative metal plate in which a surface pattern and a concavo-convex pattern are perfectly synchronized.

[0002]

2. Description of the Related Art Heretofore, a decorative metal plate having a pattern and a concavo-convex pattern has been manufactured, for example, as follows. A decorative sheet in which a base sheet made of a resin sheet or the like is subjected to pattern printing and embossing to form a concavo-convex pattern, and the concave portions of the concavo-convex pattern are filled with coloring ink by wiping (Japanese Patent Publication No. 58-14312, etc.) ) Is laminated on a metal substrate with an adhesive to produce a decorative metal plate. A method for producing a decorative metal plate by directly printing a normal pattern and a pattern visually visible in a concave portion with ink containing a matting agent on a metal substrate. On the surface of the metal substrate, a resin layer is formed by painting or laminating a sheet, and the embossing plate is pressed against the surface of the resin layer, and when embossing a concavo-convex pattern, ink is previously attached to the convex portions of the embossing plate. A manufacturing method of forming a decorative metal plate by forming a picture pattern accurately tuned in a concave portion of a concave and convex pattern by pressing in a pressed state. The method of synchronizing the pattern and the concavo-convex pattern is a so-called valley print method (see Japanese Patent Publication No. 59-15289).

[0003]

However, in the above manufacturing method, the base sheet of the decorative sheet is heated and softened by heat at the time of embossing and stretched by the tension applied in the conveying direction for conveying the decorative sheet. The pattern and the pattern do not synchronize (the register is not correct). Further, there is also a problem that a part of the concavo-convex pattern returns to a flat surface due to the heat when the decorative sheet is attached to the metal substrate and the release of the residual stress of the sheet. Further, in the above-described manufacturing method, even if a feeling of unevenness is obtained visually, since the surface is still flat, the reproducibility (expressive power) of the uneven pattern is still lower than that in the case of actually having unevenness. Insufficient in design.
Further, in the above manufacturing method, when the substrate to be embossed is formed of a laminate including a hard material such as a metal substrate as in the present invention, there is no problem as long as only a shallow uneven pattern that does not reach the metal substrate is formed. . However, when the uneven pattern reaching the metal substrate is formed, the ink is sandwiched between the hard metal substrate and the hard embossing plate, is squeezed out from the concave portion of the uneven pattern, and bleeds around the concave portion, or in the concave portion. There is a disadvantage that the density of the ink becomes thin or that the ink transfer becomes uneven.

Accordingly, an object of the present invention is to provide a decorative metal plate using a hard metal substrate, in which the pattern and the uneven pattern are synchronized with each other, and the uneven pattern reaching the metal substrate is also synchronized therewith. An object of the present invention is to provide a manufacturing method that does not cause uneven ink transfer of a pattern.

[0005]

In order to solve the above-mentioned problems, a method of manufacturing a decorative metal sheet according to the present invention is a method of performing at least the following steps (a) to (c) in this order. (A) a preparation step of preparing a laminate of a metal substrate and a resin layer; (b) a metal embossing plate cylinder and an embossing impression cylinder whose surface irregularities are in a male-female-type relationship with each other; An embossing step of pressing the laminate to form a concavo-convex pattern reaching the metal substrate; (c) a printing plate cylinder having the same concavo-convex pattern and diameter on the same surface as the embossing plate cylinder and the embossing impression cylinder And, between the printing impression cylinder, the shaped laminate is inserted and pressed, and the printing plate cylinder in which ink has been applied only to the projections of the uneven pattern in advance is formed in the concave portion of the resin layer of the laminate. A printing process in which a pattern is printed by transferring ink.

[0006] By adopting such a manufacturing method, it is possible to perfectly tune the position of the pattern on the surface and the concavo-convex pattern. In addition, since the uneven pattern can reach the metal substrate, the expressiveness of the uneven pattern is excellent. Furthermore,
The ink of the picture pattern is squeezed out from the concave portion of the concave and convex pattern and bleeds around the concave portion, or the concentration in the concave portion is reduced,
No ink transfer unevenness occurs. Therefore, a decorative metal plate of high quality with a high design can be obtained.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the method for manufacturing a decorative metal plate according to the present invention will be described below.

First, FIGS. 1 to 5 are conceptual diagrams conceptually illustrating a method for manufacturing a decorative metal plate according to the present invention. FIG. 1 shows a main part of the present manufacturing method, FIG. 2 shows an example of a preparation step for preparing a laminate of a metal substrate and a resin layer, and FIG. FIG. 4 shows the next step, a printing step of forming a pattern by transferring ink only to the concave portions of the embossed laminate by printing. Further, FIG.
Thereafter, a back surface treatment step of appropriately laminating a foamed resin layer and a glass fiber nonwoven fabric on the back side of the metal substrate will be described. And FIG.
1 is a cross-sectional view showing an example of a decorative metal plate obtained by the method for manufacturing a decorative metal plate of the present invention.

[Overview] First, referring to the schematic diagram of FIG.
In the method for producing a decorative metal plate of the present invention, a laminate 3 of a metal substrate 1 and a resin layer 2 is prepared as a preparation step, and then, in an embossing step, the surface irregularities are in a relationship of a male type and a female type with each other. Certain metallic embossing plate cylinder 21 and embossing impression cylinder 22
Then, the laminate 3 is pressed to form the concavo-convex pattern 4 reaching the metal substrate 1. After this, between the printing plate cylinder 23 and the printing impression cylinder 24 having the same concavo-convex pattern and diameter as the embossing plate cylinder 21 and the embossing impression cylinder 22,
The shaped laminate 3 is inserted and pressed, and the printing plate cylinder 2 is pressed.
The ink 5 is transferred to the concave portions of the uneven pattern formed on the resin layer 2 of the laminate 3 by a printing plate cylinder in which the ink 5 is previously applied only to the convex portions of the uneven pattern on the plate surface of No. 3, and the pattern is printed. Then, the decorative metal plate D is manufactured.

The details will be described below step by step.

Preparation step: In the preparation step, the laminate 3 is prepared.

[Laminate] As the laminate 3, a metal substrate 1
Is prepared in which the resin layer 2 is laminated. For example, FIG.
As shown in the conceptual diagram of FIG. 1, a target laminate 3 may be prepared by laminating a resin sheet 7 on the metal substrate 1 with an adhesive 6 as the resin layer 2. In the case of FIG. 2,
After the adhesive 6 is applied to one side of the metal substrate 1 by the application roller 25, the laminating roller 2 is applied to the surface on which the adhesive has been applied.
6, the resin sheet 7 is laminated to form the resin layer 2.
The laminate 3 thus obtained has a configuration in which the resin layer 2 of the resin sheet 7 is laminated on the metal substrate 1 with the adhesive 6 interposed therebetween.

As the metal substrate 1, for example, an iron or iron alloy plate such as a mild steel plate or a stainless steel plate, an aluminum alloy plate such as an aluminum plate or a duralumin plate, or zinc, tin, lead, aluminum or copper , Chromium, nickel or the like can be used. The thickness of the substrate is about 0.2 to 2 mm, but is selected depending on the application.

The resin layer 2 is a layer for protecting the surface of the metal substrate such as preventing corrosion, and for improving the adhesion of ink for forming a picture pattern. As shown in FIG. 2, the resin layer 2 may be formed by coating a resin liquid, in addition to being formed by laminating resin sheets 7 formed in advance. In order to laminate the resin sheets and adhere them to the metal substrate, an adhesive 6 is used as shown in FIG. 2 or the resin sheets are adhered by fusion. In the coating method of the resin liquid, any of known melt coating, solution coating, and the like may be used. Note that the thickness of the resin layer is 50
About 200 μm.

The resin sheet 7 is preferably a thermoplastic resin sheet in terms of embossing suitability. For example, a single sheet of a resin such as a polyester resin, a vinyl chloride resin, an acrylic resin, a polycarbonate resin, a polyolefin resin, and an ABS resin is preferred. A layer or a laminate of different resin sheets may be appropriately selected. When weather resistance is required, a resin sheet having weather resistance specifications may be used. In order to make the resin sheet weatherproof, for example, a resin containing an ultraviolet absorber or a light stabilizer is used.
In addition, as in the case of the resin sheet, the resin in the case where the resin layer is formed with the resin liquid can use the resins listed in the above list.

The adhesive 6 may be any as long as it can adhere a resin sheet to a metal substrate. For example, a polyolefin resin such as polyethylene, polypropylene, and ionomer, a two-part curable urethane resin may be used according to the resin of the resin layer. One-component moisture-curable urethane resin, epoxy resin, etc. as a main component, if necessary, known fillers, stabilizers,
What added a solvent, a plasticizer, etc. may be used.

Embossing step : In the embossing step, as shown in the conceptual diagram of FIG. 3, a metal embossing plate cylinder 21 in which the surface irregularities 4A and 4B are in a male-female relationship with each other.
Then, the above-described laminate 3 is pressed by the embossing impression cylinder 22 to form the concavo-convex pattern 4 reaching the metal substrate 1.

Uneven pattern 4 reaching metal substrate 1
The embossing plate cylinder 21 and the embossing impression cylinder 22 are both made of metal or ceramic made of iron or an iron alloy or the like.
B is a relationship between a male mold and a female mold (assuming that the embossing plate cylinder 21 is a male mold, the embossing impression cylinder 22 is a female mold). Although it differs according to the thickness of the body 3, it has a substantially inverted uneven shape. For this reason, when the laminate 3 is pressed with the embossing plate 21 from the resin layer side, which is the front side, in the state of the decorative metal plate, the uneven pattern 4A of the embossed plate cylinder 21 becomes the uneven pattern 4A reaching the metal substrate 1.
Becomes The embossing plate cylinder 21 and the embossing impression cylinder 22 are rotated in the opposite directions at the same speed and synchronously. The embossing plate cylinder 21 and the embossing impression cylinder 22 are pressed against each other by a known mechanism such as a hydraulic mechanism at a pressure necessary for embossing and mesh with each other. The embossing plate cylinder 21 is heated or cooled by an appropriate method as needed. The embossing plate cylinder 21 and the embossing impression cylinder 22 are preferably made of metal and hard. However, ceramics can be used as long as they have durability and mechanical strength.

Printing process : In the printing process, as shown in the conceptual diagram of FIG. 4, a printing plate cylinder 23 and a printing impression cylinder 24 having the same surface irregularities and diameters as the embossing plate cylinder 21 and the embossing impression cylinder 22 are formed. 3 after the uneven pattern 4 is formed on the laminate 3
Is inserted and pressed, and the ink 5 is applied to the recesses 4f of the resin layer of the laminate 3 by the printing plate cylinder 23 in which the ink 5 is previously adhered only to the projections 4e of the concavo-convex pattern 4C (of the plate surface of the printing plate cylinder 23). Transfer and print the pattern.

The concavo-convex pattern 4C on the surface of the printing plate cylinder 23 has the same (or substantially the same) concavo-convex shape as the concavo-convex pattern 4A on the surface of the embossing plate cylinder 21. The uneven pattern 4D on the surface of the printing impression cylinder 24 has the same (or substantially the same) uneven shape as the uneven pattern 4B on the surface of the embossing impression cylinder 22.

As described above, in contrast to the so-called valley printing method, in the manufacturing method of the present invention, the embossing plate cylinder 21 and the embossing impression cylinder 22 for embossing and the printing plate cylinder 23 and the printing impression cylinder 24 for printing are different from each other. The embossing step and the printing step were separately performed as separate steps having the same shape of concavities and convexities and diameters. Note that, when performing the steps separately, the embossing step and the printing step may be performed in-line or off-line.

In the valley printing method, the printing plate cylinder and the embossing plate cylinder are the same, and in the present invention, in order to form a decorative metal plate having a concavo-convex pattern reaching the metal substrate, the printing and embossing plate cylinder must have the same shape. It is necessary to use a hard metal thing. However, in the present invention, since the embossing step and the printing step are performed as separate steps, the printing plate cylinder 23 does not need to use a hard material. Therefore, a soft material can be used in consideration of printing suitability such as ink transferability and plate life.
Therefore, preferably, as the printing plate cylinder 23 and the printing impression cylinder 24, the ink 5 to be printed on the concave portion 4f of the concavo-convex pattern 4 of the shaped laminate 3 is squeezed out from the concave portion 4f and spreads around the concave portion. It is desirable to use a soft material so that the density in the concave portion does not decrease and ink transfer unevenness does not occur. As the printing plate cylinder 23 or the printing impression cylinder 24 using a soft material, a printing plate cylinder in which the periphery of a metal core is covered with a resin such as silicone rubber, polyurethane rubber or the like, or a resin such as polyester or polyamide is preferable. For the hard embossing plate cylinder 21 (and the embossing impression cylinder 22),
In the printing process, the soft printing plate cylinder 23 (and the printing impression cylinder 2) are used.
By using 4), it is possible to achieve both good embossing moldability and good ink transferability to the concave portions of the embossed pattern due to embossing.

As for the ink supply to the printing plate cylinder 23, since the printing plate cylinder can be said to be a letterpress type, for example, as shown in FIG.
Applicator rollers 27, 27 and doctor blade 2
8 and the like, the printing plate cylinder 2
Ink can be supplied only on the projections 4e of the concavo-convex pattern 4C on the plate surface of No. 3. The printing plate cylinder 23 is preferably a cylinder in terms of productivity, but may be a lithographic plate. This is also true for embossed versions.

According to the present invention, in order to transfer the ink only in the concave portion 4f of the concavo-convex pattern 4, that is, to print a picture pattern in synchronism with the concavo-convex pattern 4, the printing plate cylinder 23 and the printing impression cylinder 24 , Embossing plate cylinder 21 and embossing impression cylinder 22
In this case, the rotation phase of the printing plate cylinder 23 is, of course, synchronized with the embossed concavo-convex pattern 4. In order to synchronize (register) the phase of rotation of the printing plate cylinder 23 with the concavo-convex pattern 4, the following may be performed.

In the case where the embossing step and the printing step are performed successively and in-line, the rotations of the embossing plate cylinder 21 and the printing plate cylinder 23 are mechanically (or electrically) synchronized in phase. What is necessary is just to rotate in the same direction and the same speed. (Morrochin, embossed impression cylinder 22 is embossed version cylinder 2
The printing impression cylinder 24 is rotated by the reverse rotation synchronized with 1 in the reverse rotation synchronized with the printing plate cylinder 23. Also, when the embossing step and the printing step are performed separately off-line, the concavo-convex pattern formed in the embossing step is
It may be used as a registration mark used in ordinary multicolor printing, and the registration mark may be printed in synchronization with the phase while being detected by a sensor such as a photoelectric tube. Of course, the concavo-convex pattern of the portion used as the registration mark is formed as a concavo-convex pattern of a shape exclusive for the registration mark (such as a cross-shaped register mark), for example, near the end in the width direction of the continuous belt-shaped laminate. May be. Even in the case where the phase is mechanically (or electrically) synchronized, the presence or absence of a phase shift is checked every one rotation (or a plurality of rotations) by using the above-mentioned registration mark together. When this occurs, the phase of the printing plate cylinder 23 (and the printing impression cylinder 24) may be returned to the origin, and the phase may be synchronized with high accuracy.

An embossing plate cylinder and an embossing impression cylinder,
In order to form the same concavo-convex pattern on the printing plate cylinder and the printing impression cylinder, for example, prepare one original having a common pattern of the concavo-convex pattern and the picture pattern, and set the photosensitive plate on the embossing plate cylinder and the embossing impression cylinder. An uneven pattern corresponding to the pattern of the original is formed on a metal cylinder (or flat plate) by a photo-etching method using a resist, while a printing plate cylinder and a printing impression cylinder are provided with a photosensitive resin plate (printing impression cylinder is A material that is softer than the printing plate cylinder may be used) to form an uneven pattern according to the pattern of the original. The manuscript is
For the embossing and printing, the plate cylinder and the impression cylinder have a negative / positive relationship, but in actuality, the dimensional magnification is adjusted so that the relationship between the male and female types takes into account the thickness of the laminated body. It is a relationship pattern.

The ink 5 is not particularly limited. A known ink may be appropriately selected according to the material of the resin layer 2 forming the picture pattern and other required physical properties. The ink is
In general, the vehicle comprises a vehicle such as a binder, a coloring agent such as a pigment or a dye, and various additives appropriately added thereto. As the resin used for the binder, thermoplastic resin, thermosetting resin, required physical properties from ionizing radiation-curable resin, and the like,
A resin according to printability or the like may be appropriately selected. Examples of the thermoplastic resin include an acrylic resin, a polyester resin, a fluorine resin, a chlorinated polyolefin resin, a vinyl chloride-vinyl acetate copolymer resin, and the like, and examples of the thermosetting resin include a two-component curable urethane resin and an epoxy resin. There are resins, aminoalkyd resins, and the like, and examples of ionizing radiation-curable resins include urethane acrylate resins, epoxy acrylate resins, and the like, which are cured by ultraviolet rays or electron beams. When weather resistance is required, acrylic resin, fluororesin and the like are preferable. Known inorganic pigments, organic pigments,
Bright pigments, dyes and the like are used. For example, titanium white, red iron oxide, graphite, ultramarine, carbon black and the like are used as the inorganic pigment. In addition, quinacridone, isoindolinone, phthalocyanine blue, aniline black, and the like are used as the organic pigment. As the glitter pigment, scale-like foil pieces such as titanium dioxide-coated mica, aluminum, and brass are used. As the additives, for example, extenders such as silica and clay, curing agents, stabilizers and the like are used.

The pattern of the concavo-convex pattern 4 (and the picture pattern) is arbitrary, but a large pattern is preferable in order to facilitate position synchronization even when the embossing step and the printing step are offline. For example, a joint pattern, a character, a geometric pattern, or the like of a brickwork pattern. Of course, a fine pattern may be used as long as the position can be synchronized with a desired required accuracy. The fine pattern is, for example, a wood grain conduit groove, a hair run, a linear groove, or the like.

Other Steps : The method for manufacturing a decorative metal sheet of the present invention is a manufacturing method including at least the above three steps, and other steps are appropriately performed as necessary, for example, a back surface treatment step described below is performed. Is also good.

Backside treatment step : As the backside treatment step, for example, a foamed resin layer or a glass fiber nonwoven fabric may be laminated. For example, as shown in the conceptual diagram of FIG. 5, a laminated body (which is also a decorative metal plate D) on which the embossing process and the printing process have been completed is discharged onto the metal substrate 1 side which is the back side of the decorative metal plate. The foamed resin liquid 8A is discharged from the part 31 or the like and applied. When the applied resin liquid is in a non-foamed state, the glass fiber nonwoven fabric 9 is further laminated thereon by a laminating roller 32 and then heated and foamed. Then, the foamed resin liquid is used as a foamed resin layer.

The foamed resin layer 8 is provided to impart heat insulation and sound insulation to the decorative metal plate, and to prevent corrosion from the back surface of the metal substrate. As the foamed resin layer,
Known polyurethane foams and the like can be used. As the polyurethane foam, for example, a rigid urethane foam using a polyether polyol, toluene diisocyanate, and a blowing agent with a low boiling point solvent may be used. The glass fiber nonwoven fabric 9 is provided for the purpose of covering and protecting the surface of the foamed resin layer.

[Decorative Metal Sheet] An example of a decorative metal sheet obtained by the manufacturing method of the present invention is shown in a sectional view of FIG. A decorative metal plate D shown in FIG. 1 has a laminate 3 having a configuration in which a resin layer 2 is laminated on a metal substrate 1 via an adhesive 6 and a concave portion 4 f and a convex portion 4.
The uneven pattern 4 is shaped to the extent that the metal substrate 1 is deformed by the uneven pattern 4 having a thickness of g (that is, to the extent that the uneven pattern reaches the metal substrate), and the uneven pattern 4 on the surface of the resin layer 2 is formed. The ink 5 adheres in the concave portion 4f in the recess to form a pattern by the ink. Further, on the back side of the decorative metal plate on the lower side of the drawing, a foamed resin layer 8 and a glass fiber nonwoven fabric 9 are laminated in this order on the back surface of the metal substrate 1. It is a decorative metal plate having a configuration as described above.

[Use of decorative metal sheet] The decorative metal sheet of the present invention can be used for, for example, interior materials of buildings such as walls and ceilings, exterior materials of buildings such as siding, vehicles such as cars, trains, ships, and aircraft. It is used for interior materials, doors and other fittings, partitions, etc.

[0034]

EXAMPLES The present invention will be further described below with reference to examples.

EXAMPLE As a preparatory step, as shown in FIG. 2, 100 parts by weight of an acrylic polyol base material and 1,6-hexamethylene diisocyanate were cured on one side of a 0.35 mm thick aluminum plate as a metal substrate 1. Agent 5
Two-part curable urethane resin adhesive 6 consisting of parts by weight
With 5 g / m ² (solid content basis), titanium white, red
After laminating a resin sheet 7 made of a 120-μm thick yellow-brown vinyl chloride resin (containing 28 phr of a plasticizer) containing a coloring agent made of graphite as a resin layer 2, the adhesive was cured at a plate temperature of 200 ° C. A laminate was prepared by bonding to produce a laminate 3.

In the next embossing step, as shown in FIG.
The embossing of a brickwork-like uneven pattern having joints is performed by embossing a pair of embossing plate cylinders 21 and embossing impression cylinders 22 (both are made of a hollow iron cylinder and the surface is chrome-plated) in a relationship between a male mold and a female mold. Between the resin layer 2 and the resin layer 2 made of a vinyl chloride resin sheet by sandwiching the laminate 3 so that the resin layer 2 side faces the embossing plate cylinder 21.
An uneven pattern 4 having joint groove-shaped concave portions was formed on the side surface. The joint width of the uneven pattern 4 is 7 mm, and the joint depth is 2 m.
m.

In the next printing step, as shown in FIG. 4, a pair of printing plate cylinders 23 and 24 having the same shape as the embossing plate cylinder 21 and the embossing impression cylinder 22 are prepared. Printing was performed in which the ink 5 was transferred to the concave portion 4f serving as a part. At this time, the printing plate cylinder 23 has the one having the concavo-convex pattern 4C in which the joint groove is the convex part 4e, and the printing impression cylinder 24 has the one having the concavo-convex pattern 4D in which the joint groove is the concave part.
And As the printing plate cylinder 23 and the printing impression cylinder 24, those obtained by forming an uneven pattern 4C and 4D by exposing and developing an iron core surface coated with a polyester-based photosensitive resin were used.

Although the product obtained by the above steps can be used as a product of a decorative metal plate, a back surface treatment step is further performed. That is, as shown in FIG. 5, a urethane resin-based foamed resin liquid 8A is applied from the discharge portion 31 to the back surface of the metal substrate 1, and when the foamed resin liquid is in an unfoamed state from above, the basis weight is 80 g. / M ² of glass fiber nonwoven fabric 9 was laminated by a laminating roller 32. Then, it was heated and foamed and cured by heating in a heating furnace to obtain a decorative metal plate D having a structure in which a foamed resin layer 8 made of a rigid polyurethane foam and a glass fiber nonwoven fabric 9 were laminated on the back side as shown in FIG. .

[0039]

According to the method for manufacturing a decorative metal sheet of the present invention, it is possible to perfectly synchronize the position of the picture pattern and the uneven pattern on the surface. In addition, since the uneven pattern can reach the metal substrate, the expressiveness of the uneven pattern is excellent.
Further, there is no unevenness of ink transfer such that the ink of the picture pattern is squeezed out from the concave portion of the concave and convex pattern and bleeds around the concave portion, and the density in the concave portion is reduced. Therefore, a decorative metal plate of high quality with a high design can be obtained.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram illustrating a method for manufacturing a decorative metal sheet according to the present invention.

FIG. 2 is a conceptual diagram showing an example of a preparation step for preparing a laminate of a metal substrate and a resin layer in the method for manufacturing a decorative metal plate of the present invention.

FIG. 3 is a conceptual diagram showing an embossing step of forming a concavo-convex pattern on a laminate by embossing in the method for manufacturing a decorative metal sheet of the present invention.

FIG. 4 is a conceptual diagram showing a printing step of forming a picture pattern by transferring ink by printing to a concave portion of an embossed laminate in the method for manufacturing a decorative metal sheet of the present invention.

FIG. 5 is a conceptual diagram showing a back surface treatment step of further laminating a foamed resin layer and a glass fiber nonwoven fabric on the back side of the metal substrate in the method for manufacturing a decorative metal plate of the present invention.

FIG. 6 is a cross-sectional view showing an example of a decorative metal plate obtained by the method for manufacturing a decorative metal plate of the present invention.

[Description of Signs] 1 Metal substrate 2 Resin layer 3 Laminate 4 Uneven pattern (in the laminate or decorative metal plate) 4A Uneven pattern of embossing plate cylinder 4B Uneven pattern of embossing impression cylinder 4C Uneven pattern of printing plate cylinder 4D Concavo-convex pattern of printing impression cylinder 4e Convex part of concavo-convex pattern of printing plate cylinder 4f Concave part of concavo-convex pattern formed on laminate 4g Convex part of concavo-convex pattern formed on laminate 5 Ink 6 Adhesive 7 Resin Sheet 8 Foamed resin layer 8A Foamed resin liquid (unfoamed state) 9 Glass fiber nonwoven fabric 21 Embossed plate cylinder 22 Embossed impression cylinder 23 Printing plate cylinder 24 Printing impression cylinder 25 Application roller 26 Laminate roller 27 Applicator roller 28 Doctor blade 31 Discharge unit 32 Lamine Troller D Cosmetic Material

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Claims (1)

[Claims] 1. A method for producing a decorative metal sheet, wherein at least the following steps (a) to (c) are performed in this order. (A) a preparation step of preparing a laminate of a metal substrate and a resin layer; (b) a metal embossing plate cylinder and an embossing impression cylinder whose surface irregularities are in a male-female-type relationship with each other;
An embossing step of pressing the laminate to form a concavo-convex pattern reaching the metal substrate; (c) a printing plate cylinder having the same concavo-convex pattern and diameter on the same surface as the embossing plate cylinder and the embossing impression cylinder And, between the printing impression cylinder, the shaped laminate is inserted and pressed, and the printing plate cylinder in which ink has been applied only to the projections of the uneven pattern in advance is formed in the concave portion of the resin layer of the laminate. A printing process in which a pattern is printed by transferring ink.